qemu/linux-user/main.c

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/*
* qemu user main
*
* Copyright (c) 2003-2008 Fabrice Bellard
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/syscall.h>
#include <sys/resource.h>
#include "qemu.h"
#include "qemu-common.h"
#include "cpu.h"
#include "tcg.h"
#include "qemu/timer.h"
#include "qemu/envlist.h"
#include "elf.h"
char *exec_path;
int singlestep;
static const char *filename;
static const char *argv0;
static int gdbstub_port;
static envlist_t *envlist;
static const char *cpu_model;
unsigned long mmap_min_addr;
unsigned long guest_base;
int have_guest_base;
#if (TARGET_LONG_BITS == 32) && (HOST_LONG_BITS == 64)
/*
* When running 32-on-64 we should make sure we can fit all of the possible
* guest address space into a contiguous chunk of virtual host memory.
*
* This way we will never overlap with our own libraries or binaries or stack
* or anything else that QEMU maps.
*/
# ifdef TARGET_MIPS
/* MIPS only supports 31 bits of virtual address space for user space */
unsigned long reserved_va = 0x77000000;
# else
unsigned long reserved_va = 0xf7000000;
# endif
#else
unsigned long reserved_va;
#endif
static void usage(void);
static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
const char *qemu_uname_release;
/* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
we allocate a bigger stack. Need a better solution, for example
by remapping the process stack directly at the right place */
unsigned long guest_stack_size = 8 * 1024 * 1024UL;
void gemu_log(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
}
#if defined(TARGET_I386)
int cpu_get_pic_interrupt(CPUX86State *env)
{
return -1;
}
#endif
/***********************************************************/
/* Helper routines for implementing atomic operations. */
/* To implement exclusive operations we force all cpus to syncronise.
We don't require a full sync, only that no cpus are executing guest code.
The alternative is to map target atomic ops onto host equivalents,
which requires quite a lot of per host/target work. */
static pthread_mutex_t cpu_list_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t exclusive_lock = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t exclusive_cond = PTHREAD_COND_INITIALIZER;
static pthread_cond_t exclusive_resume = PTHREAD_COND_INITIALIZER;
static int pending_cpus;
/* Make sure everything is in a consistent state for calling fork(). */
void fork_start(void)
{
qemu_mutex_lock(&tcg_ctx.tb_ctx.tb_lock);
pthread_mutex_lock(&exclusive_lock);
mmap_fork_start();
}
void fork_end(int child)
{
mmap_fork_end(child);
if (child) {
CPUState *cpu, *next_cpu;
/* Child processes created by fork() only have a single thread.
Discard information about the parent threads. */
CPU_FOREACH_SAFE(cpu, next_cpu) {
if (cpu != thread_cpu) {
QTAILQ_REMOVE(&cpus, thread_cpu, node);
}
}
pending_cpus = 0;
pthread_mutex_init(&exclusive_lock, NULL);
pthread_mutex_init(&cpu_list_mutex, NULL);
pthread_cond_init(&exclusive_cond, NULL);
pthread_cond_init(&exclusive_resume, NULL);
qemu_mutex_init(&tcg_ctx.tb_ctx.tb_lock);
gdbserver_fork(thread_cpu);
} else {
pthread_mutex_unlock(&exclusive_lock);
qemu_mutex_unlock(&tcg_ctx.tb_ctx.tb_lock);
}
}
/* Wait for pending exclusive operations to complete. The exclusive lock
must be held. */
static inline void exclusive_idle(void)
{
while (pending_cpus) {
pthread_cond_wait(&exclusive_resume, &exclusive_lock);
}
}
/* Start an exclusive operation.
Must only be called from outside cpu_arm_exec. */
static inline void start_exclusive(void)
{
CPUState *other_cpu;
pthread_mutex_lock(&exclusive_lock);
exclusive_idle();
pending_cpus = 1;
/* Make all other cpus stop executing. */
CPU_FOREACH(other_cpu) {
if (other_cpu->running) {
pending_cpus++;
cpu_exit(other_cpu);
}
}
if (pending_cpus > 1) {
pthread_cond_wait(&exclusive_cond, &exclusive_lock);
}
}
/* Finish an exclusive operation. */
static inline void __attribute__((unused)) end_exclusive(void)
{
pending_cpus = 0;
pthread_cond_broadcast(&exclusive_resume);
pthread_mutex_unlock(&exclusive_lock);
}
/* Wait for exclusive ops to finish, and begin cpu execution. */
static inline void cpu_exec_start(CPUState *cpu)
{
pthread_mutex_lock(&exclusive_lock);
exclusive_idle();
cpu->running = true;
pthread_mutex_unlock(&exclusive_lock);
}
/* Mark cpu as not executing, and release pending exclusive ops. */
static inline void cpu_exec_end(CPUState *cpu)
{
pthread_mutex_lock(&exclusive_lock);
cpu->running = false;
if (pending_cpus > 1) {
pending_cpus--;
if (pending_cpus == 1) {
pthread_cond_signal(&exclusive_cond);
}
}
exclusive_idle();
pthread_mutex_unlock(&exclusive_lock);
}
void cpu_list_lock(void)
{
pthread_mutex_lock(&cpu_list_mutex);
}
void cpu_list_unlock(void)
{
pthread_mutex_unlock(&cpu_list_mutex);
}
#ifdef TARGET_I386
/***********************************************************/
/* CPUX86 core interface */
uint64_t cpu_get_tsc(CPUX86State *env)
{
return cpu_get_real_ticks();
}
static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
int flags)
{
unsigned int e1, e2;
uint32_t *p;
e1 = (addr << 16) | (limit & 0xffff);
e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
e2 |= flags;
p = ptr;
p[0] = tswap32(e1);
p[1] = tswap32(e2);
}
static uint64_t *idt_table;
#ifdef TARGET_X86_64
static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
uint64_t addr, unsigned int sel)
{
uint32_t *p, e1, e2;
e1 = (addr & 0xffff) | (sel << 16);
e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
p = ptr;
p[0] = tswap32(e1);
p[1] = tswap32(e2);
p[2] = tswap32(addr >> 32);
p[3] = 0;
}
/* only dpl matters as we do only user space emulation */
static void set_idt(int n, unsigned int dpl)
{
set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
}
#else
static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
uint32_t addr, unsigned int sel)
{
uint32_t *p, e1, e2;
e1 = (addr & 0xffff) | (sel << 16);
e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
p = ptr;
p[0] = tswap32(e1);
p[1] = tswap32(e2);
}
/* only dpl matters as we do only user space emulation */
static void set_idt(int n, unsigned int dpl)
{
set_gate(idt_table + n, 0, dpl, 0, 0);
}
#endif
void cpu_loop(CPUX86State *env)
{
CPUState *cs = CPU(x86_env_get_cpu(env));
int trapnr;
abi_ulong pc;
target_siginfo_t info;
for(;;) {
cpu_exec_start(cs);
trapnr = cpu_x86_exec(cs);
cpu_exec_end(cs);
switch(trapnr) {
case 0x80:
/* linux syscall from int $0x80 */
env->regs[R_EAX] = do_syscall(env,
env->regs[R_EAX],
env->regs[R_EBX],
env->regs[R_ECX],
env->regs[R_EDX],
env->regs[R_ESI],
env->regs[R_EDI],
env->regs[R_EBP],
0, 0);
break;
#ifndef TARGET_ABI32
case EXCP_SYSCALL:
/* linux syscall from syscall instruction */
env->regs[R_EAX] = do_syscall(env,
env->regs[R_EAX],
env->regs[R_EDI],
env->regs[R_ESI],
env->regs[R_EDX],
env->regs[10],
env->regs[8],
env->regs[9],
0, 0);
break;
#endif
case EXCP0B_NOSEG:
case EXCP0C_STACK:
info.si_signo = TARGET_SIGBUS;
info.si_errno = 0;
info.si_code = TARGET_SI_KERNEL;
info._sifields._sigfault._addr = 0;
queue_signal(env, info.si_signo, &info);
break;
case EXCP0D_GPF:
/* XXX: potential problem if ABI32 */
#ifndef TARGET_X86_64
if (env->eflags & VM_MASK) {
handle_vm86_fault(env);
} else
#endif
{
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SI_KERNEL;
info._sifields._sigfault._addr = 0;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP0E_PAGE:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
if (!(env->error_code & 1))
info.si_code = TARGET_SEGV_MAPERR;
else
info.si_code = TARGET_SEGV_ACCERR;
info._sifields._sigfault._addr = env->cr[2];
queue_signal(env, info.si_signo, &info);
break;
case EXCP00_DIVZ:
#ifndef TARGET_X86_64
if (env->eflags & VM_MASK) {
handle_vm86_trap(env, trapnr);
} else
#endif
{
/* division by zero */
info.si_signo = TARGET_SIGFPE;
info.si_errno = 0;
info.si_code = TARGET_FPE_INTDIV;
info._sifields._sigfault._addr = env->eip;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP01_DB:
case EXCP03_INT3:
#ifndef TARGET_X86_64
if (env->eflags & VM_MASK) {
handle_vm86_trap(env, trapnr);
} else
#endif
{
info.si_signo = TARGET_SIGTRAP;
info.si_errno = 0;
if (trapnr == EXCP01_DB) {
info.si_code = TARGET_TRAP_BRKPT;
info._sifields._sigfault._addr = env->eip;
} else {
info.si_code = TARGET_SI_KERNEL;
info._sifields._sigfault._addr = 0;
}
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP04_INTO:
case EXCP05_BOUND:
#ifndef TARGET_X86_64
if (env->eflags & VM_MASK) {
handle_vm86_trap(env, trapnr);
} else
#endif
{
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SI_KERNEL;
info._sifields._sigfault._addr = 0;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP06_ILLOP:
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_ILLOPN;
info._sifields._sigfault._addr = env->eip;
queue_signal(env, info.si_signo, &info);
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig(cs, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
default:
pc = env->segs[R_CS].base + env->eip;
fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
(long)pc, trapnr);
abort();
}
process_pending_signals(env);
}
}
#endif
#ifdef TARGET_ARM
#define get_user_code_u32(x, gaddr, doswap) \
({ abi_long __r = get_user_u32((x), (gaddr)); \
if (!__r && (doswap)) { \
(x) = bswap32(x); \
} \
__r; \
})
#define get_user_code_u16(x, gaddr, doswap) \
({ abi_long __r = get_user_u16((x), (gaddr)); \
if (!__r && (doswap)) { \
(x) = bswap16(x); \
} \
__r; \
})
#ifdef TARGET_ABI32
/* Commpage handling -- there is no commpage for AArch64 */
/*
* See the Linux kernel's Documentation/arm/kernel_user_helpers.txt
* Input:
* r0 = pointer to oldval
* r1 = pointer to newval
* r2 = pointer to target value
*
* Output:
* r0 = 0 if *ptr was changed, non-0 if no exchange happened
* C set if *ptr was changed, clear if no exchange happened
*
* Note segv's in kernel helpers are a bit tricky, we can set the
* data address sensibly but the PC address is just the entry point.
*/
static void arm_kernel_cmpxchg64_helper(CPUARMState *env)
{
uint64_t oldval, newval, val;
uint32_t addr, cpsr;
target_siginfo_t info;
/* Based on the 32 bit code in do_kernel_trap */
/* XXX: This only works between threads, not between processes.
It's probably possible to implement this with native host
operations. However things like ldrex/strex are much harder so
there's not much point trying. */
start_exclusive();
cpsr = cpsr_read(env);
addr = env->regs[2];
if (get_user_u64(oldval, env->regs[0])) {
target-arm: Define exception record for AArch64 exceptions For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-15 22:18:38 +04:00
env->exception.vaddress = env->regs[0];
goto segv;
};
if (get_user_u64(newval, env->regs[1])) {
target-arm: Define exception record for AArch64 exceptions For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-15 22:18:38 +04:00
env->exception.vaddress = env->regs[1];
goto segv;
};
if (get_user_u64(val, addr)) {
target-arm: Define exception record for AArch64 exceptions For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-15 22:18:38 +04:00
env->exception.vaddress = addr;
goto segv;
}
if (val == oldval) {
val = newval;
if (put_user_u64(val, addr)) {
target-arm: Define exception record for AArch64 exceptions For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-15 22:18:38 +04:00
env->exception.vaddress = addr;
goto segv;
};
env->regs[0] = 0;
cpsr |= CPSR_C;
} else {
env->regs[0] = -1;
cpsr &= ~CPSR_C;
}
cpsr_write(env, cpsr, CPSR_C);
end_exclusive();
return;
segv:
end_exclusive();
/* We get the PC of the entry address - which is as good as anything,
on a real kernel what you get depends on which mode it uses. */
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
target-arm: Define exception record for AArch64 exceptions For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-15 22:18:38 +04:00
info._sifields._sigfault._addr = env->exception.vaddress;
queue_signal(env, info.si_signo, &info);
}
/* Handle a jump to the kernel code page. */
static int
do_kernel_trap(CPUARMState *env)
{
uint32_t addr;
uint32_t cpsr;
uint32_t val;
switch (env->regs[15]) {
case 0xffff0fa0: /* __kernel_memory_barrier */
/* ??? No-op. Will need to do better for SMP. */
break;
case 0xffff0fc0: /* __kernel_cmpxchg */
/* XXX: This only works between threads, not between processes.
It's probably possible to implement this with native host
operations. However things like ldrex/strex are much harder so
there's not much point trying. */
start_exclusive();
cpsr = cpsr_read(env);
addr = env->regs[2];
/* FIXME: This should SEGV if the access fails. */
if (get_user_u32(val, addr))
val = ~env->regs[0];
if (val == env->regs[0]) {
val = env->regs[1];
/* FIXME: Check for segfaults. */
put_user_u32(val, addr);
env->regs[0] = 0;
cpsr |= CPSR_C;
} else {
env->regs[0] = -1;
cpsr &= ~CPSR_C;
}
cpsr_write(env, cpsr, CPSR_C);
end_exclusive();
break;
case 0xffff0fe0: /* __kernel_get_tls */
env->regs[0] = cpu_get_tls(env);
break;
case 0xffff0f60: /* __kernel_cmpxchg64 */
arm_kernel_cmpxchg64_helper(env);
break;
default:
return 1;
}
/* Jump back to the caller. */
addr = env->regs[14];
if (addr & 1) {
env->thumb = 1;
addr &= ~1;
}
env->regs[15] = addr;
return 0;
}
/* Store exclusive handling for AArch32 */
static int do_strex(CPUARMState *env)
{
target-arm: Widen exclusive-access support struct fields to 64 bits In preparation for adding support for A64 load/store exclusive instructions, widen the fields in the CPU state struct that deal with address and data values for exclusives from 32 to 64 bits. Although in practice AArch64 and AArch32 exclusive accesses will be generally separate there are some odd theoretical corner cases (eg you should be able to do the exclusive load in AArch32, take an exception to AArch64 and successfully do the store exclusive there), and it's also easier to reason about. The changes in semantics for the variables are: exclusive_addr -> extended to 64 bits; -1ULL for "monitor lost", otherwise always < 2^32 for AArch32 exclusive_val -> extended to 64 bits. 64 bit exclusives in AArch32 now use the high half of exclusive_val instead of a separate exclusive_high exclusive_high -> is no longer used in AArch32; extended to 64 bits as it will be needed for AArch64's pair-of-64-bit-values exclusives. exclusive_test -> extended to 64 bits, as it is an address. Since this is a linux-user-only field, in arm-linux-user it will always have the top 32 bits zero. exclusive_info -> stays 32 bits, as it is neither data nor address, but simply holds register indexes etc. AArch64 will be able to fit all its information into 32 bits as well. Note that the refactoring of gen_store_exclusive() coincidentally fixes a minor bug where ldrexd would incorrectly update the first CPU register even if the load for the second register faulted. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net>
2014-01-05 02:15:47 +04:00
uint64_t val;
int size;
int rc = 1;
int segv = 0;
uint32_t addr;
start_exclusive();
target-arm: Widen exclusive-access support struct fields to 64 bits In preparation for adding support for A64 load/store exclusive instructions, widen the fields in the CPU state struct that deal with address and data values for exclusives from 32 to 64 bits. Although in practice AArch64 and AArch32 exclusive accesses will be generally separate there are some odd theoretical corner cases (eg you should be able to do the exclusive load in AArch32, take an exception to AArch64 and successfully do the store exclusive there), and it's also easier to reason about. The changes in semantics for the variables are: exclusive_addr -> extended to 64 bits; -1ULL for "monitor lost", otherwise always < 2^32 for AArch32 exclusive_val -> extended to 64 bits. 64 bit exclusives in AArch32 now use the high half of exclusive_val instead of a separate exclusive_high exclusive_high -> is no longer used in AArch32; extended to 64 bits as it will be needed for AArch64's pair-of-64-bit-values exclusives. exclusive_test -> extended to 64 bits, as it is an address. Since this is a linux-user-only field, in arm-linux-user it will always have the top 32 bits zero. exclusive_info -> stays 32 bits, as it is neither data nor address, but simply holds register indexes etc. AArch64 will be able to fit all its information into 32 bits as well. Note that the refactoring of gen_store_exclusive() coincidentally fixes a minor bug where ldrexd would incorrectly update the first CPU register even if the load for the second register faulted. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net>
2014-01-05 02:15:47 +04:00
if (env->exclusive_addr != env->exclusive_test) {
goto fail;
}
target-arm: Widen exclusive-access support struct fields to 64 bits In preparation for adding support for A64 load/store exclusive instructions, widen the fields in the CPU state struct that deal with address and data values for exclusives from 32 to 64 bits. Although in practice AArch64 and AArch32 exclusive accesses will be generally separate there are some odd theoretical corner cases (eg you should be able to do the exclusive load in AArch32, take an exception to AArch64 and successfully do the store exclusive there), and it's also easier to reason about. The changes in semantics for the variables are: exclusive_addr -> extended to 64 bits; -1ULL for "monitor lost", otherwise always < 2^32 for AArch32 exclusive_val -> extended to 64 bits. 64 bit exclusives in AArch32 now use the high half of exclusive_val instead of a separate exclusive_high exclusive_high -> is no longer used in AArch32; extended to 64 bits as it will be needed for AArch64's pair-of-64-bit-values exclusives. exclusive_test -> extended to 64 bits, as it is an address. Since this is a linux-user-only field, in arm-linux-user it will always have the top 32 bits zero. exclusive_info -> stays 32 bits, as it is neither data nor address, but simply holds register indexes etc. AArch64 will be able to fit all its information into 32 bits as well. Note that the refactoring of gen_store_exclusive() coincidentally fixes a minor bug where ldrexd would incorrectly update the first CPU register even if the load for the second register faulted. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net>
2014-01-05 02:15:47 +04:00
/* We know we're always AArch32 so the address is in uint32_t range
* unless it was the -1 exclusive-monitor-lost value (which won't
* match exclusive_test above).
*/
assert(extract64(env->exclusive_addr, 32, 32) == 0);
addr = env->exclusive_addr;
size = env->exclusive_info & 0xf;
switch (size) {
case 0:
segv = get_user_u8(val, addr);
break;
case 1:
segv = get_user_u16(val, addr);
break;
case 2:
case 3:
segv = get_user_u32(val, addr);
break;
default:
abort();
}
if (segv) {
target-arm: Define exception record for AArch64 exceptions For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-15 22:18:38 +04:00
env->exception.vaddress = addr;
goto done;
}
if (size == 3) {
target-arm: Widen exclusive-access support struct fields to 64 bits In preparation for adding support for A64 load/store exclusive instructions, widen the fields in the CPU state struct that deal with address and data values for exclusives from 32 to 64 bits. Although in practice AArch64 and AArch32 exclusive accesses will be generally separate there are some odd theoretical corner cases (eg you should be able to do the exclusive load in AArch32, take an exception to AArch64 and successfully do the store exclusive there), and it's also easier to reason about. The changes in semantics for the variables are: exclusive_addr -> extended to 64 bits; -1ULL for "monitor lost", otherwise always < 2^32 for AArch32 exclusive_val -> extended to 64 bits. 64 bit exclusives in AArch32 now use the high half of exclusive_val instead of a separate exclusive_high exclusive_high -> is no longer used in AArch32; extended to 64 bits as it will be needed for AArch64's pair-of-64-bit-values exclusives. exclusive_test -> extended to 64 bits, as it is an address. Since this is a linux-user-only field, in arm-linux-user it will always have the top 32 bits zero. exclusive_info -> stays 32 bits, as it is neither data nor address, but simply holds register indexes etc. AArch64 will be able to fit all its information into 32 bits as well. Note that the refactoring of gen_store_exclusive() coincidentally fixes a minor bug where ldrexd would incorrectly update the first CPU register even if the load for the second register faulted. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net>
2014-01-05 02:15:47 +04:00
uint32_t valhi;
segv = get_user_u32(valhi, addr + 4);
if (segv) {
target-arm: Define exception record for AArch64 exceptions For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-15 22:18:38 +04:00
env->exception.vaddress = addr + 4;
goto done;
}
target-arm: Widen exclusive-access support struct fields to 64 bits In preparation for adding support for A64 load/store exclusive instructions, widen the fields in the CPU state struct that deal with address and data values for exclusives from 32 to 64 bits. Although in practice AArch64 and AArch32 exclusive accesses will be generally separate there are some odd theoretical corner cases (eg you should be able to do the exclusive load in AArch32, take an exception to AArch64 and successfully do the store exclusive there), and it's also easier to reason about. The changes in semantics for the variables are: exclusive_addr -> extended to 64 bits; -1ULL for "monitor lost", otherwise always < 2^32 for AArch32 exclusive_val -> extended to 64 bits. 64 bit exclusives in AArch32 now use the high half of exclusive_val instead of a separate exclusive_high exclusive_high -> is no longer used in AArch32; extended to 64 bits as it will be needed for AArch64's pair-of-64-bit-values exclusives. exclusive_test -> extended to 64 bits, as it is an address. Since this is a linux-user-only field, in arm-linux-user it will always have the top 32 bits zero. exclusive_info -> stays 32 bits, as it is neither data nor address, but simply holds register indexes etc. AArch64 will be able to fit all its information into 32 bits as well. Note that the refactoring of gen_store_exclusive() coincidentally fixes a minor bug where ldrexd would incorrectly update the first CPU register even if the load for the second register faulted. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net>
2014-01-05 02:15:47 +04:00
val = deposit64(val, 32, 32, valhi);
}
target-arm: Widen exclusive-access support struct fields to 64 bits In preparation for adding support for A64 load/store exclusive instructions, widen the fields in the CPU state struct that deal with address and data values for exclusives from 32 to 64 bits. Although in practice AArch64 and AArch32 exclusive accesses will be generally separate there are some odd theoretical corner cases (eg you should be able to do the exclusive load in AArch32, take an exception to AArch64 and successfully do the store exclusive there), and it's also easier to reason about. The changes in semantics for the variables are: exclusive_addr -> extended to 64 bits; -1ULL for "monitor lost", otherwise always < 2^32 for AArch32 exclusive_val -> extended to 64 bits. 64 bit exclusives in AArch32 now use the high half of exclusive_val instead of a separate exclusive_high exclusive_high -> is no longer used in AArch32; extended to 64 bits as it will be needed for AArch64's pair-of-64-bit-values exclusives. exclusive_test -> extended to 64 bits, as it is an address. Since this is a linux-user-only field, in arm-linux-user it will always have the top 32 bits zero. exclusive_info -> stays 32 bits, as it is neither data nor address, but simply holds register indexes etc. AArch64 will be able to fit all its information into 32 bits as well. Note that the refactoring of gen_store_exclusive() coincidentally fixes a minor bug where ldrexd would incorrectly update the first CPU register even if the load for the second register faulted. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net>
2014-01-05 02:15:47 +04:00
if (val != env->exclusive_val) {
goto fail;
}
val = env->regs[(env->exclusive_info >> 8) & 0xf];
switch (size) {
case 0:
segv = put_user_u8(val, addr);
break;
case 1:
segv = put_user_u16(val, addr);
break;
case 2:
case 3:
segv = put_user_u32(val, addr);
break;
}
if (segv) {
target-arm: Define exception record for AArch64 exceptions For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-15 22:18:38 +04:00
env->exception.vaddress = addr;
goto done;
}
if (size == 3) {
val = env->regs[(env->exclusive_info >> 12) & 0xf];
segv = put_user_u32(val, addr + 4);
if (segv) {
target-arm: Define exception record for AArch64 exceptions For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-15 22:18:38 +04:00
env->exception.vaddress = addr + 4;
goto done;
}
}
rc = 0;
fail:
env->regs[15] += 4;
env->regs[(env->exclusive_info >> 4) & 0xf] = rc;
done:
end_exclusive();
return segv;
}
void cpu_loop(CPUARMState *env)
{
CPUState *cs = CPU(arm_env_get_cpu(env));
int trapnr;
unsigned int n, insn;
target_siginfo_t info;
uint32_t addr;
for(;;) {
cpu_exec_start(cs);
trapnr = cpu_arm_exec(cs);
cpu_exec_end(cs);
switch(trapnr) {
case EXCP_UDEF:
{
TaskState *ts = cs->opaque;
uint32_t opcode;
int rc;
/* we handle the FPU emulation here, as Linux */
/* we get the opcode */
/* FIXME - what to do if get_user() fails? */
get_user_code_u32(opcode, env->regs[15], env->bswap_code);
rc = EmulateAll(opcode, &ts->fpa, env);
if (rc == 0) { /* illegal instruction */
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_ILLOPN;
info._sifields._sigfault._addr = env->regs[15];
queue_signal(env, info.si_signo, &info);
} else if (rc < 0) { /* FP exception */
int arm_fpe=0;
/* translate softfloat flags to FPSR flags */
if (-rc & float_flag_invalid)
arm_fpe |= BIT_IOC;
if (-rc & float_flag_divbyzero)
arm_fpe |= BIT_DZC;
if (-rc & float_flag_overflow)
arm_fpe |= BIT_OFC;
if (-rc & float_flag_underflow)
arm_fpe |= BIT_UFC;
if (-rc & float_flag_inexact)
arm_fpe |= BIT_IXC;
FPSR fpsr = ts->fpa.fpsr;
//printf("fpsr 0x%x, arm_fpe 0x%x\n",fpsr,arm_fpe);
if (fpsr & (arm_fpe << 16)) { /* exception enabled? */
info.si_signo = TARGET_SIGFPE;
info.si_errno = 0;
/* ordered by priority, least first */
if (arm_fpe & BIT_IXC) info.si_code = TARGET_FPE_FLTRES;
if (arm_fpe & BIT_UFC) info.si_code = TARGET_FPE_FLTUND;
if (arm_fpe & BIT_OFC) info.si_code = TARGET_FPE_FLTOVF;
if (arm_fpe & BIT_DZC) info.si_code = TARGET_FPE_FLTDIV;
if (arm_fpe & BIT_IOC) info.si_code = TARGET_FPE_FLTINV;
info._sifields._sigfault._addr = env->regs[15];
queue_signal(env, info.si_signo, &info);
} else {
env->regs[15] += 4;
}
/* accumulate unenabled exceptions */
if ((!(fpsr & BIT_IXE)) && (arm_fpe & BIT_IXC))
fpsr |= BIT_IXC;
if ((!(fpsr & BIT_UFE)) && (arm_fpe & BIT_UFC))
fpsr |= BIT_UFC;
if ((!(fpsr & BIT_OFE)) && (arm_fpe & BIT_OFC))
fpsr |= BIT_OFC;
if ((!(fpsr & BIT_DZE)) && (arm_fpe & BIT_DZC))
fpsr |= BIT_DZC;
if ((!(fpsr & BIT_IOE)) && (arm_fpe & BIT_IOC))
fpsr |= BIT_IOC;
ts->fpa.fpsr=fpsr;
} else { /* everything OK */
/* increment PC */
env->regs[15] += 4;
}
}
break;
case EXCP_SWI:
case EXCP_BKPT:
{
env->eabi = 1;
/* system call */
if (trapnr == EXCP_BKPT) {
if (env->thumb) {
/* FIXME - what to do if get_user() fails? */
get_user_code_u16(insn, env->regs[15], env->bswap_code);
n = insn & 0xff;
env->regs[15] += 2;
} else {
/* FIXME - what to do if get_user() fails? */
get_user_code_u32(insn, env->regs[15], env->bswap_code);
n = (insn & 0xf) | ((insn >> 4) & 0xff0);
env->regs[15] += 4;
}
} else {
if (env->thumb) {
/* FIXME - what to do if get_user() fails? */
get_user_code_u16(insn, env->regs[15] - 2,
env->bswap_code);
n = insn & 0xff;
} else {
/* FIXME - what to do if get_user() fails? */
get_user_code_u32(insn, env->regs[15] - 4,
env->bswap_code);
n = insn & 0xffffff;
}
}
if (n == ARM_NR_cacheflush) {
/* nop */
} else if (n == ARM_NR_semihosting
|| n == ARM_NR_thumb_semihosting) {
env->regs[0] = do_arm_semihosting (env);
} else if (n == 0 || n >= ARM_SYSCALL_BASE || env->thumb) {
/* linux syscall */
if (env->thumb || n == 0) {
n = env->regs[7];
} else {
n -= ARM_SYSCALL_BASE;
env->eabi = 0;
}
if ( n > ARM_NR_BASE) {
switch (n) {
case ARM_NR_cacheflush:
/* nop */
break;
case ARM_NR_set_tls:
cpu_set_tls(env, env->regs[0]);
env->regs[0] = 0;
break;
case ARM_NR_breakpoint:
env->regs[15] -= env->thumb ? 2 : 4;
goto excp_debug;
default:
gemu_log("qemu: Unsupported ARM syscall: 0x%x\n",
n);
env->regs[0] = -TARGET_ENOSYS;
break;
}
} else {
env->regs[0] = do_syscall(env,
n,
env->regs[0],
env->regs[1],
env->regs[2],
env->regs[3],
env->regs[4],
env->regs[5],
0, 0);
}
} else {
goto error;
}
}
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
target-arm: Define exception record for AArch64 exceptions For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-15 22:18:38 +04:00
case EXCP_STREX:
if (!do_strex(env)) {
break;
}
/* fall through for segv */
case EXCP_PREFETCH_ABORT:
case EXCP_DATA_ABORT:
target-arm: Define exception record for AArch64 exceptions For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-15 22:18:38 +04:00
addr = env->exception.vaddress;
{
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = addr;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP_DEBUG:
excp_debug:
{
int sig;
sig = gdb_handlesig(cs, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
case EXCP_KERNEL_TRAP:
if (do_kernel_trap(env))
goto error;
break;
default:
error:
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
trapnr);
cpu_dump_state(cs, stderr, fprintf, 0);
abort();
}
process_pending_signals(env);
}
}
#else
/*
* Handle AArch64 store-release exclusive
*
* rs = gets the status result of store exclusive
* rt = is the register that is stored
* rt2 = is the second register store (in STP)
*
*/
static int do_strex_a64(CPUARMState *env)
{
uint64_t val;
int size;
bool is_pair;
int rc = 1;
int segv = 0;
uint64_t addr;
int rs, rt, rt2;
start_exclusive();
/* size | is_pair << 2 | (rs << 4) | (rt << 9) | (rt2 << 14)); */
size = extract32(env->exclusive_info, 0, 2);
is_pair = extract32(env->exclusive_info, 2, 1);
rs = extract32(env->exclusive_info, 4, 5);
rt = extract32(env->exclusive_info, 9, 5);
rt2 = extract32(env->exclusive_info, 14, 5);
addr = env->exclusive_addr;
if (addr != env->exclusive_test) {
goto finish;
}
switch (size) {
case 0:
segv = get_user_u8(val, addr);
break;
case 1:
segv = get_user_u16(val, addr);
break;
case 2:
segv = get_user_u32(val, addr);
break;
case 3:
segv = get_user_u64(val, addr);
break;
default:
abort();
}
if (segv) {
target-arm: Define exception record for AArch64 exceptions For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-15 22:18:38 +04:00
env->exception.vaddress = addr;
goto error;
}
if (val != env->exclusive_val) {
goto finish;
}
if (is_pair) {
if (size == 2) {
segv = get_user_u32(val, addr + 4);
} else {
segv = get_user_u64(val, addr + 8);
}
if (segv) {
target-arm: Define exception record for AArch64 exceptions For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-15 22:18:38 +04:00
env->exception.vaddress = addr + (size == 2 ? 4 : 8);
goto error;
}
if (val != env->exclusive_high) {
goto finish;
}
}
/* handle the zero register */
val = rt == 31 ? 0 : env->xregs[rt];
switch (size) {
case 0:
segv = put_user_u8(val, addr);
break;
case 1:
segv = put_user_u16(val, addr);
break;
case 2:
segv = put_user_u32(val, addr);
break;
case 3:
segv = put_user_u64(val, addr);
break;
}
if (segv) {
goto error;
}
if (is_pair) {
/* handle the zero register */
val = rt2 == 31 ? 0 : env->xregs[rt2];
if (size == 2) {
segv = put_user_u32(val, addr + 4);
} else {
segv = put_user_u64(val, addr + 8);
}
if (segv) {
target-arm: Define exception record for AArch64 exceptions For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-15 22:18:38 +04:00
env->exception.vaddress = addr + (size == 2 ? 4 : 8);
goto error;
}
}
rc = 0;
finish:
env->pc += 4;
/* rs == 31 encodes a write to the ZR, thus throwing away
* the status return. This is rather silly but valid.
*/
if (rs < 31) {
env->xregs[rs] = rc;
}
error:
/* instruction faulted, PC does not advance */
/* either way a strex releases any exclusive lock we have */
env->exclusive_addr = -1;
end_exclusive();
return segv;
}
/* AArch64 main loop */
void cpu_loop(CPUARMState *env)
{
CPUState *cs = CPU(arm_env_get_cpu(env));
int trapnr, sig;
target_siginfo_t info;
for (;;) {
cpu_exec_start(cs);
trapnr = cpu_arm_exec(cs);
cpu_exec_end(cs);
switch (trapnr) {
case EXCP_SWI:
env->xregs[0] = do_syscall(env,
env->xregs[8],
env->xregs[0],
env->xregs[1],
env->xregs[2],
env->xregs[3],
env->xregs[4],
env->xregs[5],
0, 0);
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_UDEF:
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_ILLOPN;
info._sifields._sigfault._addr = env->pc;
queue_signal(env, info.si_signo, &info);
break;
target-arm: Define exception record for AArch64 exceptions For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-15 22:18:38 +04:00
case EXCP_STREX:
if (!do_strex_a64(env)) {
break;
}
/* fall through for segv */
case EXCP_PREFETCH_ABORT:
case EXCP_DATA_ABORT:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->exception.vaddress;
queue_signal(env, info.si_signo, &info);
break;
case EXCP_DEBUG:
case EXCP_BKPT:
sig = gdb_handlesig(cs, TARGET_SIGTRAP);
if (sig) {
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP_SEMIHOST:
env->xregs[0] = do_arm_semihosting(env);
break;
default:
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
trapnr);
cpu_dump_state(cs, stderr, fprintf, 0);
abort();
}
process_pending_signals(env);
/* Exception return on AArch64 always clears the exclusive monitor,
* so any return to running guest code implies this.
* A strex (successful or otherwise) also clears the monitor, so
* we don't need to specialcase EXCP_STREX.
*/
env->exclusive_addr = -1;
}
}
#endif /* ndef TARGET_ABI32 */
#endif
#ifdef TARGET_UNICORE32
void cpu_loop(CPUUniCore32State *env)
{
CPUState *cs = CPU(uc32_env_get_cpu(env));
int trapnr;
unsigned int n, insn;
target_siginfo_t info;
for (;;) {
cpu_exec_start(cs);
trapnr = uc32_cpu_exec(cs);
cpu_exec_end(cs);
switch (trapnr) {
case UC32_EXCP_PRIV:
{
/* system call */
get_user_u32(insn, env->regs[31] - 4);
n = insn & 0xffffff;
if (n >= UC32_SYSCALL_BASE) {
/* linux syscall */
n -= UC32_SYSCALL_BASE;
if (n == UC32_SYSCALL_NR_set_tls) {
cpu_set_tls(env, env->regs[0]);
env->regs[0] = 0;
} else {
env->regs[0] = do_syscall(env,
n,
env->regs[0],
env->regs[1],
env->regs[2],
env->regs[3],
env->regs[4],
env->regs[5],
0, 0);
}
} else {
goto error;
}
}
break;
case UC32_EXCP_DTRAP:
case UC32_EXCP_ITRAP:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->cp0.c4_faultaddr;
queue_signal(env, info.si_signo, &info);
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig(cs, TARGET_SIGTRAP);
if (sig) {
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
default:
goto error;
}
process_pending_signals(env);
}
error:
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr);
cpu_dump_state(cs, stderr, fprintf, 0);
abort();
}
#endif
#ifdef TARGET_SPARC
#define SPARC64_STACK_BIAS 2047
//#define DEBUG_WIN
/* WARNING: dealing with register windows _is_ complicated. More info
can be found at http://www.sics.se/~psm/sparcstack.html */
static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
{
index = (index + cwp * 16) % (16 * env->nwindows);
/* wrap handling : if cwp is on the last window, then we use the
registers 'after' the end */
if (index < 8 && env->cwp == env->nwindows - 1)
index += 16 * env->nwindows;
return index;
}
/* save the register window 'cwp1' */
static inline void save_window_offset(CPUSPARCState *env, int cwp1)
{
unsigned int i;
abi_ulong sp_ptr;
sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
#ifdef TARGET_SPARC64
if (sp_ptr & 3)
sp_ptr += SPARC64_STACK_BIAS;
#endif
#if defined(DEBUG_WIN)
printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
sp_ptr, cwp1);
#endif
for(i = 0; i < 16; i++) {
/* FIXME - what to do if put_user() fails? */
put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
sp_ptr += sizeof(abi_ulong);
}
}
static void save_window(CPUSPARCState *env)
{
#ifndef TARGET_SPARC64
unsigned int new_wim;
new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
((1LL << env->nwindows) - 1);
save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
env->wim = new_wim;
#else
save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
env->cansave++;
env->canrestore--;
#endif
}
static void restore_window(CPUSPARCState *env)
{
#ifndef TARGET_SPARC64
unsigned int new_wim;
#endif
unsigned int i, cwp1;
abi_ulong sp_ptr;
#ifndef TARGET_SPARC64
new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
((1LL << env->nwindows) - 1);
#endif
/* restore the invalid window */
cwp1 = cpu_cwp_inc(env, env->cwp + 1);
sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
#ifdef TARGET_SPARC64
if (sp_ptr & 3)
sp_ptr += SPARC64_STACK_BIAS;
#endif
#if defined(DEBUG_WIN)
printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
sp_ptr, cwp1);
#endif
for(i = 0; i < 16; i++) {
/* FIXME - what to do if get_user() fails? */
get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
sp_ptr += sizeof(abi_ulong);
}
#ifdef TARGET_SPARC64
env->canrestore++;
if (env->cleanwin < env->nwindows - 1)
env->cleanwin++;
env->cansave--;
#else
env->wim = new_wim;
#endif
}
static void flush_windows(CPUSPARCState *env)
{
int offset, cwp1;
offset = 1;
for(;;) {
/* if restore would invoke restore_window(), then we can stop */
cwp1 = cpu_cwp_inc(env, env->cwp + offset);
#ifndef TARGET_SPARC64
if (env->wim & (1 << cwp1))
break;
#else
if (env->canrestore == 0)
break;
env->cansave++;
env->canrestore--;
#endif
save_window_offset(env, cwp1);
offset++;
}
cwp1 = cpu_cwp_inc(env, env->cwp + 1);
#ifndef TARGET_SPARC64
/* set wim so that restore will reload the registers */
env->wim = 1 << cwp1;
#endif
#if defined(DEBUG_WIN)
printf("flush_windows: nb=%d\n", offset - 1);
#endif
}
void cpu_loop (CPUSPARCState *env)
{
CPUState *cs = CPU(sparc_env_get_cpu(env));
int trapnr;
abi_long ret;
target_siginfo_t info;
while (1) {
cpu_exec_start(cs);
trapnr = cpu_sparc_exec(cs);
cpu_exec_end(cs);
/* Compute PSR before exposing state. */
if (env->cc_op != CC_OP_FLAGS) {
cpu_get_psr(env);
}
switch (trapnr) {
#ifndef TARGET_SPARC64
case 0x88:
case 0x90:
#else
case 0x110:
case 0x16d:
#endif
ret = do_syscall (env, env->gregs[1],
env->regwptr[0], env->regwptr[1],
env->regwptr[2], env->regwptr[3],
env->regwptr[4], env->regwptr[5],
0, 0);
if ((abi_ulong)ret >= (abi_ulong)(-515)) {
#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
env->xcc |= PSR_CARRY;
#else
env->psr |= PSR_CARRY;
#endif
ret = -ret;
} else {
#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
env->xcc &= ~PSR_CARRY;
#else
env->psr &= ~PSR_CARRY;
#endif
}
env->regwptr[0] = ret;
/* next instruction */
env->pc = env->npc;
env->npc = env->npc + 4;
break;
case 0x83: /* flush windows */
#ifdef TARGET_ABI32
case 0x103:
#endif
flush_windows(env);
/* next instruction */
env->pc = env->npc;
env->npc = env->npc + 4;
break;
#ifndef TARGET_SPARC64
case TT_WIN_OVF: /* window overflow */
save_window(env);
break;
case TT_WIN_UNF: /* window underflow */
restore_window(env);
break;
case TT_TFAULT:
case TT_DFAULT:
{
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->mmuregs[4];
queue_signal(env, info.si_signo, &info);
}
break;
#else
case TT_SPILL: /* window overflow */
save_window(env);
break;
case TT_FILL: /* window underflow */
restore_window(env);
break;
case TT_TFAULT:
case TT_DFAULT:
{
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
if (trapnr == TT_DFAULT)
info._sifields._sigfault._addr = env->dmmuregs[4];
else
info._sifields._sigfault._addr = cpu_tsptr(env)->tpc;
queue_signal(env, info.si_signo, &info);
}
break;
#ifndef TARGET_ABI32
case 0x16e:
flush_windows(env);
sparc64_get_context(env);
break;
case 0x16f:
flush_windows(env);
sparc64_set_context(env);
break;
#endif
#endif
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case TT_ILL_INSN:
{
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_ILLOPC;
info._sifields._sigfault._addr = env->pc;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig(cs, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
default:
printf ("Unhandled trap: 0x%x\n", trapnr);
cpu_dump_state(cs, stderr, fprintf, 0);
exit (1);
}
process_pending_signals (env);
}
}
#endif
#ifdef TARGET_PPC
static inline uint64_t cpu_ppc_get_tb(CPUPPCState *env)
{
return cpu_get_real_ticks();
}
uint64_t cpu_ppc_load_tbl(CPUPPCState *env)
{
return cpu_ppc_get_tb(env);
}
uint32_t cpu_ppc_load_tbu(CPUPPCState *env)
{
return cpu_ppc_get_tb(env) >> 32;
}
uint64_t cpu_ppc_load_atbl(CPUPPCState *env)
{
return cpu_ppc_get_tb(env);
}
uint32_t cpu_ppc_load_atbu(CPUPPCState *env)
{
return cpu_ppc_get_tb(env) >> 32;
}
Great PowerPC emulation code resynchronisation and improvments: - Add status file to make regression tracking easier - Move all micro-operations helpers definitions into a separate header: should never be seen outside of op.c - Update copyrights - Add new / missing PowerPC CPU definitions - Add definitions for PowerPC BookE - Add support for PowerPC 6xx/7xx software driven TLBs Allow use of PowerPC 603 as an example - Add preliminary code for POWER, POWER2, PowerPC 403, 405, 440, 601, 602 and BookE support - Avoid compiling priviledged only resources support for user-mode emulation - Remove unused helpers / micro-ops / dead code - Add instructions usage statistics dump: useful to figure which instructions need strong optimizations. - Micro-operation fixes: * add missing RETURN in some micro-ops * fix prototypes * use softfloat routines for all floating-point operations * fix tlbie instruction * move some huge micro-operations into helpers - emulation fixes: * fix inverted opcodes for fcmpo / fcmpu * condition register update is always to be done after the whole instruction has completed * add missing NIP updates when calling helpers that may generate an exception - optimizations and improvments: * optimize very often used instructions (li, mr, rlwixx...) * remove specific micro-ops for rarely used instructions * add routines for addresses computations to avoid bugs due to multiple different implementations * fix TB linking: do not reset T0 at the end of every TB. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2473 c046a42c-6fe2-441c-8c8c-71466251a162
2007-03-07 11:32:30 +03:00
uint32_t cpu_ppc601_load_rtcu(CPUPPCState *env)
Great PowerPC emulation code resynchronisation and improvments: - Add status file to make regression tracking easier - Move all micro-operations helpers definitions into a separate header: should never be seen outside of op.c - Update copyrights - Add new / missing PowerPC CPU definitions - Add definitions for PowerPC BookE - Add support for PowerPC 6xx/7xx software driven TLBs Allow use of PowerPC 603 as an example - Add preliminary code for POWER, POWER2, PowerPC 403, 405, 440, 601, 602 and BookE support - Avoid compiling priviledged only resources support for user-mode emulation - Remove unused helpers / micro-ops / dead code - Add instructions usage statistics dump: useful to figure which instructions need strong optimizations. - Micro-operation fixes: * add missing RETURN in some micro-ops * fix prototypes * use softfloat routines for all floating-point operations * fix tlbie instruction * move some huge micro-operations into helpers - emulation fixes: * fix inverted opcodes for fcmpo / fcmpu * condition register update is always to be done after the whole instruction has completed * add missing NIP updates when calling helpers that may generate an exception - optimizations and improvments: * optimize very often used instructions (li, mr, rlwixx...) * remove specific micro-ops for rarely used instructions * add routines for addresses computations to avoid bugs due to multiple different implementations * fix TB linking: do not reset T0 at the end of every TB. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2473 c046a42c-6fe2-441c-8c8c-71466251a162
2007-03-07 11:32:30 +03:00
__attribute__ (( alias ("cpu_ppc_load_tbu") ));
uint32_t cpu_ppc601_load_rtcl(CPUPPCState *env)
{
Great PowerPC emulation code resynchronisation and improvments: - Add status file to make regression tracking easier - Move all micro-operations helpers definitions into a separate header: should never be seen outside of op.c - Update copyrights - Add new / missing PowerPC CPU definitions - Add definitions for PowerPC BookE - Add support for PowerPC 6xx/7xx software driven TLBs Allow use of PowerPC 603 as an example - Add preliminary code for POWER, POWER2, PowerPC 403, 405, 440, 601, 602 and BookE support - Avoid compiling priviledged only resources support for user-mode emulation - Remove unused helpers / micro-ops / dead code - Add instructions usage statistics dump: useful to figure which instructions need strong optimizations. - Micro-operation fixes: * add missing RETURN in some micro-ops * fix prototypes * use softfloat routines for all floating-point operations * fix tlbie instruction * move some huge micro-operations into helpers - emulation fixes: * fix inverted opcodes for fcmpo / fcmpu * condition register update is always to be done after the whole instruction has completed * add missing NIP updates when calling helpers that may generate an exception - optimizations and improvments: * optimize very often used instructions (li, mr, rlwixx...) * remove specific micro-ops for rarely used instructions * add routines for addresses computations to avoid bugs due to multiple different implementations * fix TB linking: do not reset T0 at the end of every TB. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2473 c046a42c-6fe2-441c-8c8c-71466251a162
2007-03-07 11:32:30 +03:00
return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
}
Great PowerPC emulation code resynchronisation and improvments: - Add status file to make regression tracking easier - Move all micro-operations helpers definitions into a separate header: should never be seen outside of op.c - Update copyrights - Add new / missing PowerPC CPU definitions - Add definitions for PowerPC BookE - Add support for PowerPC 6xx/7xx software driven TLBs Allow use of PowerPC 603 as an example - Add preliminary code for POWER, POWER2, PowerPC 403, 405, 440, 601, 602 and BookE support - Avoid compiling priviledged only resources support for user-mode emulation - Remove unused helpers / micro-ops / dead code - Add instructions usage statistics dump: useful to figure which instructions need strong optimizations. - Micro-operation fixes: * add missing RETURN in some micro-ops * fix prototypes * use softfloat routines for all floating-point operations * fix tlbie instruction * move some huge micro-operations into helpers - emulation fixes: * fix inverted opcodes for fcmpo / fcmpu * condition register update is always to be done after the whole instruction has completed * add missing NIP updates when calling helpers that may generate an exception - optimizations and improvments: * optimize very often used instructions (li, mr, rlwixx...) * remove specific micro-ops for rarely used instructions * add routines for addresses computations to avoid bugs due to multiple different implementations * fix TB linking: do not reset T0 at the end of every TB. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2473 c046a42c-6fe2-441c-8c8c-71466251a162
2007-03-07 11:32:30 +03:00
/* XXX: to be fixed */
int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp)
{
return -1;
}
int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val)
{
return -1;
}
#define EXCP_DUMP(env, fmt, ...) \
do { \
CPUState *cs = ENV_GET_CPU(env); \
fprintf(stderr, fmt , ## __VA_ARGS__); \
cpu_dump_state(cs, stderr, fprintf, 0); \
qemu_log(fmt, ## __VA_ARGS__); \
if (qemu_log_enabled()) { \
log_cpu_state(cs, 0); \
} \
} while (0)
static int do_store_exclusive(CPUPPCState *env)
{
target_ulong addr;
target_ulong page_addr;
target_ulong val, val2 __attribute__((unused)) = 0;
int flags;
int segv = 0;
addr = env->reserve_ea;
page_addr = addr & TARGET_PAGE_MASK;
start_exclusive();
mmap_lock();
flags = page_get_flags(page_addr);
if ((flags & PAGE_READ) == 0) {
segv = 1;
} else {
int reg = env->reserve_info & 0x1f;
int size = env->reserve_info >> 5;
int stored = 0;
if (addr == env->reserve_addr) {
switch (size) {
case 1: segv = get_user_u8(val, addr); break;
case 2: segv = get_user_u16(val, addr); break;
case 4: segv = get_user_u32(val, addr); break;
#if defined(TARGET_PPC64)
case 8: segv = get_user_u64(val, addr); break;
case 16: {
segv = get_user_u64(val, addr);
if (!segv) {
segv = get_user_u64(val2, addr + 8);
}
break;
}
#endif
default: abort();
}
if (!segv && val == env->reserve_val) {
val = env->gpr[reg];
switch (size) {
case 1: segv = put_user_u8(val, addr); break;
case 2: segv = put_user_u16(val, addr); break;
case 4: segv = put_user_u32(val, addr); break;
#if defined(TARGET_PPC64)
case 8: segv = put_user_u64(val, addr); break;
case 16: {
if (val2 == env->reserve_val2) {
if (msr_le) {
val2 = val;
val = env->gpr[reg+1];
} else {
val2 = env->gpr[reg+1];
}
segv = put_user_u64(val, addr);
if (!segv) {
segv = put_user_u64(val2, addr + 8);
}
}
break;
}
#endif
default: abort();
}
if (!segv) {
stored = 1;
}
}
}
env->crf[0] = (stored << 1) | xer_so;
env->reserve_addr = (target_ulong)-1;
}
if (!segv) {
env->nip += 4;
}
mmap_unlock();
end_exclusive();
return segv;
}
void cpu_loop(CPUPPCState *env)
{
CPUState *cs = CPU(ppc_env_get_cpu(env));
target_siginfo_t info;
int trapnr;
target_ulong ret;
for(;;) {
cpu_exec_start(cs);
trapnr = cpu_ppc_exec(cs);
cpu_exec_end(cs);
switch(trapnr) {
case POWERPC_EXCP_NONE:
/* Just go on */
break;
case POWERPC_EXCP_CRITICAL: /* Critical input */
cpu_abort(cs, "Critical interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_MCHECK: /* Machine check exception */
cpu_abort(cs, "Machine check exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_DSI: /* Data storage exception */
EXCP_DUMP(env, "Invalid data memory access: 0x" TARGET_FMT_lx "\n",
env->spr[SPR_DAR]);
/* XXX: check this. Seems bugged */
switch (env->error_code & 0xFF000000) {
case 0x40000000:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
break;
case 0x04000000:
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_ILLADR;
break;
case 0x08000000:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_ACCERR;
break;
default:
/* Let's send a regular segfault... */
EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
env->error_code);
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
break;
}
info._sifields._sigfault._addr = env->nip;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_ISI: /* Instruction storage exception */
EXCP_DUMP(env, "Invalid instruction fetch: 0x\n" TARGET_FMT_lx
"\n", env->spr[SPR_SRR0]);
/* XXX: check this */
switch (env->error_code & 0xFF000000) {
case 0x40000000:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
break;
case 0x10000000:
case 0x08000000:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_ACCERR;
break;
default:
/* Let's send a regular segfault... */
EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
env->error_code);
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
break;
}
info._sifields._sigfault._addr = env->nip - 4;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_EXTERNAL: /* External input */
cpu_abort(cs, "External interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_ALIGN: /* Alignment exception */
EXCP_DUMP(env, "Unaligned memory access\n");
/* XXX: check this */
info.si_signo = TARGET_SIGBUS;
info.si_errno = 0;
info.si_code = TARGET_BUS_ADRALN;
info._sifields._sigfault._addr = env->nip;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_PROGRAM: /* Program exception */
/* XXX: check this */
switch (env->error_code & ~0xF) {
case POWERPC_EXCP_FP:
EXCP_DUMP(env, "Floating point program exception\n");
info.si_signo = TARGET_SIGFPE;
info.si_errno = 0;
switch (env->error_code & 0xF) {
case POWERPC_EXCP_FP_OX:
info.si_code = TARGET_FPE_FLTOVF;
break;
case POWERPC_EXCP_FP_UX:
info.si_code = TARGET_FPE_FLTUND;
break;
case POWERPC_EXCP_FP_ZX:
case POWERPC_EXCP_FP_VXZDZ:
info.si_code = TARGET_FPE_FLTDIV;
break;
case POWERPC_EXCP_FP_XX:
info.si_code = TARGET_FPE_FLTRES;
break;
case POWERPC_EXCP_FP_VXSOFT:
info.si_code = TARGET_FPE_FLTINV;
break;
case POWERPC_EXCP_FP_VXSNAN:
case POWERPC_EXCP_FP_VXISI:
case POWERPC_EXCP_FP_VXIDI:
case POWERPC_EXCP_FP_VXIMZ:
case POWERPC_EXCP_FP_VXVC:
case POWERPC_EXCP_FP_VXSQRT:
case POWERPC_EXCP_FP_VXCVI:
info.si_code = TARGET_FPE_FLTSUB;
break;
default:
EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
env->error_code);
break;
}
break;
case POWERPC_EXCP_INVAL:
EXCP_DUMP(env, "Invalid instruction\n");
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
switch (env->error_code & 0xF) {
case POWERPC_EXCP_INVAL_INVAL:
info.si_code = TARGET_ILL_ILLOPC;
break;
case POWERPC_EXCP_INVAL_LSWX:
info.si_code = TARGET_ILL_ILLOPN;
break;
case POWERPC_EXCP_INVAL_SPR:
info.si_code = TARGET_ILL_PRVREG;
break;
case POWERPC_EXCP_INVAL_FP:
info.si_code = TARGET_ILL_COPROC;
break;
default:
EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
env->error_code & 0xF);
info.si_code = TARGET_ILL_ILLADR;
break;
}
break;
case POWERPC_EXCP_PRIV:
EXCP_DUMP(env, "Privilege violation\n");
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
switch (env->error_code & 0xF) {
case POWERPC_EXCP_PRIV_OPC:
info.si_code = TARGET_ILL_PRVOPC;
break;
case POWERPC_EXCP_PRIV_REG:
info.si_code = TARGET_ILL_PRVREG;
break;
default:
EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
env->error_code & 0xF);
info.si_code = TARGET_ILL_PRVOPC;
break;
}
break;
case POWERPC_EXCP_TRAP:
cpu_abort(cs, "Tried to call a TRAP\n");
break;
default:
/* Should not happen ! */
cpu_abort(cs, "Unknown program exception (%02x)\n",
env->error_code);
break;
}
info._sifields._sigfault._addr = env->nip - 4;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
EXCP_DUMP(env, "No floating point allowed\n");
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_COPROC;
info._sifields._sigfault._addr = env->nip - 4;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_SYSCALL: /* System call exception */
cpu_abort(cs, "Syscall exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
EXCP_DUMP(env, "No APU instruction allowed\n");
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_COPROC;
info._sifields._sigfault._addr = env->nip - 4;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_DECR: /* Decrementer exception */
cpu_abort(cs, "Decrementer interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
cpu_abort(cs, "Fix interval timer interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
cpu_abort(cs, "Watchdog timer interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_DTLB: /* Data TLB error */
cpu_abort(cs, "Data TLB exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_ITLB: /* Instruction TLB error */
cpu_abort(cs, "Instruction TLB exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */
EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n");
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_COPROC;
info._sifields._sigfault._addr = env->nip - 4;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */
cpu_abort(cs, "Embedded floating-point data IRQ not handled\n");
break;
case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */
cpu_abort(cs, "Embedded floating-point round IRQ not handled\n");
break;
case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */
cpu_abort(cs, "Performance monitor exception not handled\n");
break;
case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
cpu_abort(cs, "Doorbell interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
cpu_abort(cs, "Doorbell critical interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_RESET: /* System reset exception */
cpu_abort(cs, "Reset interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_DSEG: /* Data segment exception */
cpu_abort(cs, "Data segment exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_ISEG: /* Instruction segment exception */
cpu_abort(cs, "Instruction segment exception "
"while in user mode. Aborting\n");
break;
/* PowerPC 64 with hypervisor mode support */
case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
cpu_abort(cs, "Hypervisor decrementer interrupt "
"while in user mode. Aborting\n");
break;
case POWERPC_EXCP_TRACE: /* Trace exception */
/* Nothing to do:
* we use this exception to emulate step-by-step execution mode.
*/
break;
/* PowerPC 64 with hypervisor mode support */
case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
cpu_abort(cs, "Hypervisor data storage exception "
"while in user mode. Aborting\n");
break;
case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */
cpu_abort(cs, "Hypervisor instruction storage exception "
"while in user mode. Aborting\n");
break;
case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
cpu_abort(cs, "Hypervisor data segment exception "
"while in user mode. Aborting\n");
break;
case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */
cpu_abort(cs, "Hypervisor instruction segment exception "
"while in user mode. Aborting\n");
break;
case POWERPC_EXCP_VPU: /* Vector unavailable exception */
EXCP_DUMP(env, "No Altivec instructions allowed\n");
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_COPROC;
info._sifields._sigfault._addr = env->nip - 4;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */
cpu_abort(cs, "Programmable interval timer interrupt "
"while in user mode. Aborting\n");
break;
case POWERPC_EXCP_IO: /* IO error exception */
cpu_abort(cs, "IO error exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_RUNM: /* Run mode exception */
cpu_abort(cs, "Run mode exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_EMUL: /* Emulation trap exception */
cpu_abort(cs, "Emulation trap exception not handled\n");
break;
case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
cpu_abort(cs, "Instruction fetch TLB exception "
"while in user-mode. Aborting");
break;
case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
cpu_abort(cs, "Data load TLB exception while in user-mode. "
"Aborting");
break;
case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
cpu_abort(cs, "Data store TLB exception while in user-mode. "
"Aborting");
break;
case POWERPC_EXCP_FPA: /* Floating-point assist exception */
cpu_abort(cs, "Floating-point assist exception not handled\n");
break;
case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
cpu_abort(cs, "Instruction address breakpoint exception "
"not handled\n");
break;
case POWERPC_EXCP_SMI: /* System management interrupt */
cpu_abort(cs, "System management interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_THERM: /* Thermal interrupt */
cpu_abort(cs, "Thermal interrupt interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */
cpu_abort(cs, "Performance monitor exception not handled\n");
break;
case POWERPC_EXCP_VPUA: /* Vector assist exception */
cpu_abort(cs, "Vector assist exception not handled\n");
break;
case POWERPC_EXCP_SOFTP: /* Soft patch exception */
cpu_abort(cs, "Soft patch exception not handled\n");
break;
case POWERPC_EXCP_MAINT: /* Maintenance exception */
cpu_abort(cs, "Maintenance exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_STOP: /* stop translation */
/* We did invalidate the instruction cache. Go on */
break;
case POWERPC_EXCP_BRANCH: /* branch instruction: */
/* We just stopped because of a branch. Go on */
break;
case POWERPC_EXCP_SYSCALL_USER:
/* system call in user-mode emulation */
/* WARNING:
* PPC ABI uses overflow flag in cr0 to signal an error
* in syscalls.
*/
env->crf[0] &= ~0x1;
ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
env->gpr[5], env->gpr[6], env->gpr[7],
env->gpr[8], 0, 0);
if (ret == (target_ulong)(-TARGET_QEMU_ESIGRETURN)) {
/* Returning from a successful sigreturn syscall.
Avoid corrupting register state. */
break;
}
if (ret > (target_ulong)(-515)) {
env->crf[0] |= 0x1;
ret = -ret;
}
env->gpr[3] = ret;
break;
case POWERPC_EXCP_STCX:
if (do_store_exclusive(env)) {
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->nip;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig(cs, TARGET_SIGTRAP);
if (sig) {
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
default:
cpu_abort(cs, "Unknown exception 0x%d. Aborting\n", trapnr);
break;
}
process_pending_signals(env);
}
}
#endif
#ifdef TARGET_MIPS
# ifdef TARGET_ABI_MIPSO32
# define MIPS_SYS(name, args) args,
static const uint8_t mips_syscall_args[] = {
MIPS_SYS(sys_syscall , 8) /* 4000 */
MIPS_SYS(sys_exit , 1)
MIPS_SYS(sys_fork , 0)
MIPS_SYS(sys_read , 3)
MIPS_SYS(sys_write , 3)
MIPS_SYS(sys_open , 3) /* 4005 */
MIPS_SYS(sys_close , 1)
MIPS_SYS(sys_waitpid , 3)
MIPS_SYS(sys_creat , 2)
MIPS_SYS(sys_link , 2)
MIPS_SYS(sys_unlink , 1) /* 4010 */
MIPS_SYS(sys_execve , 0)
MIPS_SYS(sys_chdir , 1)
MIPS_SYS(sys_time , 1)
MIPS_SYS(sys_mknod , 3)
MIPS_SYS(sys_chmod , 2) /* 4015 */
MIPS_SYS(sys_lchown , 3)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_ni_syscall , 0) /* was sys_stat */
MIPS_SYS(sys_lseek , 3)
MIPS_SYS(sys_getpid , 0) /* 4020 */
MIPS_SYS(sys_mount , 5)
MIPS_SYS(sys_umount , 1)
MIPS_SYS(sys_setuid , 1)
MIPS_SYS(sys_getuid , 0)
MIPS_SYS(sys_stime , 1) /* 4025 */
MIPS_SYS(sys_ptrace , 4)
MIPS_SYS(sys_alarm , 1)
MIPS_SYS(sys_ni_syscall , 0) /* was sys_fstat */
MIPS_SYS(sys_pause , 0)
MIPS_SYS(sys_utime , 2) /* 4030 */
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_access , 2)
MIPS_SYS(sys_nice , 1)
MIPS_SYS(sys_ni_syscall , 0) /* 4035 */
MIPS_SYS(sys_sync , 0)
MIPS_SYS(sys_kill , 2)
MIPS_SYS(sys_rename , 2)
MIPS_SYS(sys_mkdir , 2)
MIPS_SYS(sys_rmdir , 1) /* 4040 */
MIPS_SYS(sys_dup , 1)
MIPS_SYS(sys_pipe , 0)
MIPS_SYS(sys_times , 1)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_brk , 1) /* 4045 */
MIPS_SYS(sys_setgid , 1)
MIPS_SYS(sys_getgid , 0)
MIPS_SYS(sys_ni_syscall , 0) /* was signal(2) */
MIPS_SYS(sys_geteuid , 0)
MIPS_SYS(sys_getegid , 0) /* 4050 */
MIPS_SYS(sys_acct , 0)
MIPS_SYS(sys_umount2 , 2)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_ioctl , 3)
MIPS_SYS(sys_fcntl , 3) /* 4055 */
MIPS_SYS(sys_ni_syscall , 2)
MIPS_SYS(sys_setpgid , 2)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_olduname , 1)
MIPS_SYS(sys_umask , 1) /* 4060 */
MIPS_SYS(sys_chroot , 1)
MIPS_SYS(sys_ustat , 2)
MIPS_SYS(sys_dup2 , 2)
MIPS_SYS(sys_getppid , 0)
MIPS_SYS(sys_getpgrp , 0) /* 4065 */
MIPS_SYS(sys_setsid , 0)
MIPS_SYS(sys_sigaction , 3)
MIPS_SYS(sys_sgetmask , 0)
MIPS_SYS(sys_ssetmask , 1)
MIPS_SYS(sys_setreuid , 2) /* 4070 */
MIPS_SYS(sys_setregid , 2)
MIPS_SYS(sys_sigsuspend , 0)
MIPS_SYS(sys_sigpending , 1)
MIPS_SYS(sys_sethostname , 2)
MIPS_SYS(sys_setrlimit , 2) /* 4075 */
MIPS_SYS(sys_getrlimit , 2)
MIPS_SYS(sys_getrusage , 2)
MIPS_SYS(sys_gettimeofday, 2)
MIPS_SYS(sys_settimeofday, 2)
MIPS_SYS(sys_getgroups , 2) /* 4080 */
MIPS_SYS(sys_setgroups , 2)
MIPS_SYS(sys_ni_syscall , 0) /* old_select */
MIPS_SYS(sys_symlink , 2)
MIPS_SYS(sys_ni_syscall , 0) /* was sys_lstat */
MIPS_SYS(sys_readlink , 3) /* 4085 */
MIPS_SYS(sys_uselib , 1)
MIPS_SYS(sys_swapon , 2)
MIPS_SYS(sys_reboot , 3)
MIPS_SYS(old_readdir , 3)
MIPS_SYS(old_mmap , 6) /* 4090 */
MIPS_SYS(sys_munmap , 2)
MIPS_SYS(sys_truncate , 2)
MIPS_SYS(sys_ftruncate , 2)
MIPS_SYS(sys_fchmod , 2)
MIPS_SYS(sys_fchown , 3) /* 4095 */
MIPS_SYS(sys_getpriority , 2)
MIPS_SYS(sys_setpriority , 3)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_statfs , 2)
MIPS_SYS(sys_fstatfs , 2) /* 4100 */
MIPS_SYS(sys_ni_syscall , 0) /* was ioperm(2) */
MIPS_SYS(sys_socketcall , 2)
MIPS_SYS(sys_syslog , 3)
MIPS_SYS(sys_setitimer , 3)
MIPS_SYS(sys_getitimer , 2) /* 4105 */
MIPS_SYS(sys_newstat , 2)
MIPS_SYS(sys_newlstat , 2)
MIPS_SYS(sys_newfstat , 2)
MIPS_SYS(sys_uname , 1)
MIPS_SYS(sys_ni_syscall , 0) /* 4110 was iopl(2) */
MIPS_SYS(sys_vhangup , 0)
MIPS_SYS(sys_ni_syscall , 0) /* was sys_idle() */
MIPS_SYS(sys_ni_syscall , 0) /* was sys_vm86 */
MIPS_SYS(sys_wait4 , 4)
MIPS_SYS(sys_swapoff , 1) /* 4115 */
MIPS_SYS(sys_sysinfo , 1)
MIPS_SYS(sys_ipc , 6)
MIPS_SYS(sys_fsync , 1)
MIPS_SYS(sys_sigreturn , 0)
MIPS_SYS(sys_clone , 6) /* 4120 */
MIPS_SYS(sys_setdomainname, 2)
MIPS_SYS(sys_newuname , 1)
MIPS_SYS(sys_ni_syscall , 0) /* sys_modify_ldt */
MIPS_SYS(sys_adjtimex , 1)
MIPS_SYS(sys_mprotect , 3) /* 4125 */
MIPS_SYS(sys_sigprocmask , 3)
MIPS_SYS(sys_ni_syscall , 0) /* was create_module */
MIPS_SYS(sys_init_module , 5)
MIPS_SYS(sys_delete_module, 1)
MIPS_SYS(sys_ni_syscall , 0) /* 4130 was get_kernel_syms */
MIPS_SYS(sys_quotactl , 0)
MIPS_SYS(sys_getpgid , 1)
MIPS_SYS(sys_fchdir , 1)
MIPS_SYS(sys_bdflush , 2)
MIPS_SYS(sys_sysfs , 3) /* 4135 */
MIPS_SYS(sys_personality , 1)
MIPS_SYS(sys_ni_syscall , 0) /* for afs_syscall */
MIPS_SYS(sys_setfsuid , 1)
MIPS_SYS(sys_setfsgid , 1)
MIPS_SYS(sys_llseek , 5) /* 4140 */
MIPS_SYS(sys_getdents , 3)
MIPS_SYS(sys_select , 5)
MIPS_SYS(sys_flock , 2)
MIPS_SYS(sys_msync , 3)
MIPS_SYS(sys_readv , 3) /* 4145 */
MIPS_SYS(sys_writev , 3)
MIPS_SYS(sys_cacheflush , 3)
MIPS_SYS(sys_cachectl , 3)
MIPS_SYS(sys_sysmips , 4)
MIPS_SYS(sys_ni_syscall , 0) /* 4150 */
MIPS_SYS(sys_getsid , 1)
MIPS_SYS(sys_fdatasync , 0)
MIPS_SYS(sys_sysctl , 1)
MIPS_SYS(sys_mlock , 2)
MIPS_SYS(sys_munlock , 2) /* 4155 */
MIPS_SYS(sys_mlockall , 1)
MIPS_SYS(sys_munlockall , 0)
MIPS_SYS(sys_sched_setparam, 2)
MIPS_SYS(sys_sched_getparam, 2)
MIPS_SYS(sys_sched_setscheduler, 3) /* 4160 */
MIPS_SYS(sys_sched_getscheduler, 1)
MIPS_SYS(sys_sched_yield , 0)
MIPS_SYS(sys_sched_get_priority_max, 1)
MIPS_SYS(sys_sched_get_priority_min, 1)
MIPS_SYS(sys_sched_rr_get_interval, 2) /* 4165 */
MIPS_SYS(sys_nanosleep, 2)
MIPS_SYS(sys_mremap , 5)
MIPS_SYS(sys_accept , 3)
MIPS_SYS(sys_bind , 3)
MIPS_SYS(sys_connect , 3) /* 4170 */
MIPS_SYS(sys_getpeername , 3)
MIPS_SYS(sys_getsockname , 3)
MIPS_SYS(sys_getsockopt , 5)
MIPS_SYS(sys_listen , 2)
MIPS_SYS(sys_recv , 4) /* 4175 */
MIPS_SYS(sys_recvfrom , 6)
MIPS_SYS(sys_recvmsg , 3)
MIPS_SYS(sys_send , 4)
MIPS_SYS(sys_sendmsg , 3)
MIPS_SYS(sys_sendto , 6) /* 4180 */
MIPS_SYS(sys_setsockopt , 5)
MIPS_SYS(sys_shutdown , 2)
MIPS_SYS(sys_socket , 3)
MIPS_SYS(sys_socketpair , 4)
MIPS_SYS(sys_setresuid , 3) /* 4185 */
MIPS_SYS(sys_getresuid , 3)
MIPS_SYS(sys_ni_syscall , 0) /* was sys_query_module */
MIPS_SYS(sys_poll , 3)
MIPS_SYS(sys_nfsservctl , 3)
MIPS_SYS(sys_setresgid , 3) /* 4190 */
MIPS_SYS(sys_getresgid , 3)
MIPS_SYS(sys_prctl , 5)
MIPS_SYS(sys_rt_sigreturn, 0)
MIPS_SYS(sys_rt_sigaction, 4)
MIPS_SYS(sys_rt_sigprocmask, 4) /* 4195 */
MIPS_SYS(sys_rt_sigpending, 2)
MIPS_SYS(sys_rt_sigtimedwait, 4)
MIPS_SYS(sys_rt_sigqueueinfo, 3)
MIPS_SYS(sys_rt_sigsuspend, 0)
MIPS_SYS(sys_pread64 , 6) /* 4200 */
MIPS_SYS(sys_pwrite64 , 6)
MIPS_SYS(sys_chown , 3)
MIPS_SYS(sys_getcwd , 2)
MIPS_SYS(sys_capget , 2)
MIPS_SYS(sys_capset , 2) /* 4205 */
MIPS_SYS(sys_sigaltstack , 2)
MIPS_SYS(sys_sendfile , 4)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_mmap2 , 6) /* 4210 */
MIPS_SYS(sys_truncate64 , 4)
MIPS_SYS(sys_ftruncate64 , 4)
MIPS_SYS(sys_stat64 , 2)
MIPS_SYS(sys_lstat64 , 2)
MIPS_SYS(sys_fstat64 , 2) /* 4215 */
MIPS_SYS(sys_pivot_root , 2)
MIPS_SYS(sys_mincore , 3)
MIPS_SYS(sys_madvise , 3)
MIPS_SYS(sys_getdents64 , 3)
MIPS_SYS(sys_fcntl64 , 3) /* 4220 */
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_gettid , 0)
MIPS_SYS(sys_readahead , 5)
MIPS_SYS(sys_setxattr , 5)
MIPS_SYS(sys_lsetxattr , 5) /* 4225 */
MIPS_SYS(sys_fsetxattr , 5)
MIPS_SYS(sys_getxattr , 4)
MIPS_SYS(sys_lgetxattr , 4)
MIPS_SYS(sys_fgetxattr , 4)
MIPS_SYS(sys_listxattr , 3) /* 4230 */
MIPS_SYS(sys_llistxattr , 3)
MIPS_SYS(sys_flistxattr , 3)
MIPS_SYS(sys_removexattr , 2)
MIPS_SYS(sys_lremovexattr, 2)
MIPS_SYS(sys_fremovexattr, 2) /* 4235 */
MIPS_SYS(sys_tkill , 2)
MIPS_SYS(sys_sendfile64 , 5)
MIPS_SYS(sys_futex , 6)
MIPS_SYS(sys_sched_setaffinity, 3)
MIPS_SYS(sys_sched_getaffinity, 3) /* 4240 */
MIPS_SYS(sys_io_setup , 2)
MIPS_SYS(sys_io_destroy , 1)
MIPS_SYS(sys_io_getevents, 5)
MIPS_SYS(sys_io_submit , 3)
MIPS_SYS(sys_io_cancel , 3) /* 4245 */
MIPS_SYS(sys_exit_group , 1)
MIPS_SYS(sys_lookup_dcookie, 3)
MIPS_SYS(sys_epoll_create, 1)
MIPS_SYS(sys_epoll_ctl , 4)
MIPS_SYS(sys_epoll_wait , 3) /* 4250 */
MIPS_SYS(sys_remap_file_pages, 5)
MIPS_SYS(sys_set_tid_address, 1)
MIPS_SYS(sys_restart_syscall, 0)
MIPS_SYS(sys_fadvise64_64, 7)
MIPS_SYS(sys_statfs64 , 3) /* 4255 */
MIPS_SYS(sys_fstatfs64 , 2)
MIPS_SYS(sys_timer_create, 3)
MIPS_SYS(sys_timer_settime, 4)
MIPS_SYS(sys_timer_gettime, 2)
MIPS_SYS(sys_timer_getoverrun, 1) /* 4260 */
MIPS_SYS(sys_timer_delete, 1)
MIPS_SYS(sys_clock_settime, 2)
MIPS_SYS(sys_clock_gettime, 2)
MIPS_SYS(sys_clock_getres, 2)
MIPS_SYS(sys_clock_nanosleep, 4) /* 4265 */
MIPS_SYS(sys_tgkill , 3)
MIPS_SYS(sys_utimes , 2)
MIPS_SYS(sys_mbind , 4)
MIPS_SYS(sys_ni_syscall , 0) /* sys_get_mempolicy */
MIPS_SYS(sys_ni_syscall , 0) /* 4270 sys_set_mempolicy */
MIPS_SYS(sys_mq_open , 4)
MIPS_SYS(sys_mq_unlink , 1)
MIPS_SYS(sys_mq_timedsend, 5)
MIPS_SYS(sys_mq_timedreceive, 5)
MIPS_SYS(sys_mq_notify , 2) /* 4275 */
MIPS_SYS(sys_mq_getsetattr, 3)
MIPS_SYS(sys_ni_syscall , 0) /* sys_vserver */
MIPS_SYS(sys_waitid , 4)
MIPS_SYS(sys_ni_syscall , 0) /* available, was setaltroot */
MIPS_SYS(sys_add_key , 5)
MIPS_SYS(sys_request_key, 4)
MIPS_SYS(sys_keyctl , 5)
MIPS_SYS(sys_set_thread_area, 1)
MIPS_SYS(sys_inotify_init, 0)
MIPS_SYS(sys_inotify_add_watch, 3) /* 4285 */
MIPS_SYS(sys_inotify_rm_watch, 2)
MIPS_SYS(sys_migrate_pages, 4)
MIPS_SYS(sys_openat, 4)
MIPS_SYS(sys_mkdirat, 3)
MIPS_SYS(sys_mknodat, 4) /* 4290 */
MIPS_SYS(sys_fchownat, 5)
MIPS_SYS(sys_futimesat, 3)
MIPS_SYS(sys_fstatat64, 4)
MIPS_SYS(sys_unlinkat, 3)
MIPS_SYS(sys_renameat, 4) /* 4295 */
MIPS_SYS(sys_linkat, 5)
MIPS_SYS(sys_symlinkat, 3)
MIPS_SYS(sys_readlinkat, 4)
MIPS_SYS(sys_fchmodat, 3)
MIPS_SYS(sys_faccessat, 3) /* 4300 */
MIPS_SYS(sys_pselect6, 6)
MIPS_SYS(sys_ppoll, 5)
MIPS_SYS(sys_unshare, 1)
MIPS_SYS(sys_splice, 6)
MIPS_SYS(sys_sync_file_range, 7) /* 4305 */
MIPS_SYS(sys_tee, 4)
MIPS_SYS(sys_vmsplice, 4)
MIPS_SYS(sys_move_pages, 6)
MIPS_SYS(sys_set_robust_list, 2)
MIPS_SYS(sys_get_robust_list, 3) /* 4310 */
MIPS_SYS(sys_kexec_load, 4)
MIPS_SYS(sys_getcpu, 3)
MIPS_SYS(sys_epoll_pwait, 6)
MIPS_SYS(sys_ioprio_set, 3)
MIPS_SYS(sys_ioprio_get, 2)
MIPS_SYS(sys_utimensat, 4)
MIPS_SYS(sys_signalfd, 3)
MIPS_SYS(sys_ni_syscall, 0) /* was timerfd */
MIPS_SYS(sys_eventfd, 1)
MIPS_SYS(sys_fallocate, 6) /* 4320 */
MIPS_SYS(sys_timerfd_create, 2)
MIPS_SYS(sys_timerfd_gettime, 2)
MIPS_SYS(sys_timerfd_settime, 4)
MIPS_SYS(sys_signalfd4, 4)
MIPS_SYS(sys_eventfd2, 2) /* 4325 */
MIPS_SYS(sys_epoll_create1, 1)
MIPS_SYS(sys_dup3, 3)
MIPS_SYS(sys_pipe2, 2)
MIPS_SYS(sys_inotify_init1, 1)
MIPS_SYS(sys_preadv, 6) /* 4330 */
MIPS_SYS(sys_pwritev, 6)
MIPS_SYS(sys_rt_tgsigqueueinfo, 4)
MIPS_SYS(sys_perf_event_open, 5)
MIPS_SYS(sys_accept4, 4)
MIPS_SYS(sys_recvmmsg, 5) /* 4335 */
MIPS_SYS(sys_fanotify_init, 2)
MIPS_SYS(sys_fanotify_mark, 6)
MIPS_SYS(sys_prlimit64, 4)
MIPS_SYS(sys_name_to_handle_at, 5)
MIPS_SYS(sys_open_by_handle_at, 3) /* 4340 */
MIPS_SYS(sys_clock_adjtime, 2)
MIPS_SYS(sys_syncfs, 1)
};
# undef MIPS_SYS
# endif /* O32 */
static int do_store_exclusive(CPUMIPSState *env)
{
target_ulong addr;
target_ulong page_addr;
target_ulong val;
int flags;
int segv = 0;
int reg;
int d;
addr = env->lladdr;
page_addr = addr & TARGET_PAGE_MASK;
start_exclusive();
mmap_lock();
flags = page_get_flags(page_addr);
if ((flags & PAGE_READ) == 0) {
segv = 1;
} else {
reg = env->llreg & 0x1f;
d = (env->llreg & 0x20) != 0;
if (d) {
segv = get_user_s64(val, addr);
} else {
segv = get_user_s32(val, addr);
}
if (!segv) {
if (val != env->llval) {
env->active_tc.gpr[reg] = 0;
} else {
if (d) {
segv = put_user_u64(env->llnewval, addr);
} else {
segv = put_user_u32(env->llnewval, addr);
}
if (!segv) {
env->active_tc.gpr[reg] = 1;
}
}
}
}
env->lladdr = -1;
if (!segv) {
env->active_tc.PC += 4;
}
mmap_unlock();
end_exclusive();
return segv;
}
/* Break codes */
enum {
BRK_OVERFLOW = 6,
BRK_DIVZERO = 7
};
static int do_break(CPUMIPSState *env, target_siginfo_t *info,
unsigned int code)
{
int ret = -1;
switch (code) {
case BRK_OVERFLOW:
case BRK_DIVZERO:
info->si_signo = TARGET_SIGFPE;
info->si_errno = 0;
info->si_code = (code == BRK_OVERFLOW) ? FPE_INTOVF : FPE_INTDIV;
queue_signal(env, info->si_signo, &*info);
ret = 0;
break;
default:
info->si_signo = TARGET_SIGTRAP;
info->si_errno = 0;
queue_signal(env, info->si_signo, &*info);
ret = 0;
break;
}
return ret;
}
void cpu_loop(CPUMIPSState *env)
{
CPUState *cs = CPU(mips_env_get_cpu(env));
target_siginfo_t info;
int trapnr;
abi_long ret;
# ifdef TARGET_ABI_MIPSO32
unsigned int syscall_num;
# endif
for(;;) {
cpu_exec_start(cs);
trapnr = cpu_mips_exec(cs);
cpu_exec_end(cs);
switch(trapnr) {
case EXCP_SYSCALL:
env->active_tc.PC += 4;
# ifdef TARGET_ABI_MIPSO32
syscall_num = env->active_tc.gpr[2] - 4000;
if (syscall_num >= sizeof(mips_syscall_args)) {
ret = -TARGET_ENOSYS;
} else {
int nb_args;
abi_ulong sp_reg;
abi_ulong arg5 = 0, arg6 = 0, arg7 = 0, arg8 = 0;
nb_args = mips_syscall_args[syscall_num];
sp_reg = env->active_tc.gpr[29];
switch (nb_args) {
/* these arguments are taken from the stack */
case 8:
if ((ret = get_user_ual(arg8, sp_reg + 28)) != 0) {
goto done_syscall;
}
case 7:
if ((ret = get_user_ual(arg7, sp_reg + 24)) != 0) {
goto done_syscall;
}
case 6:
if ((ret = get_user_ual(arg6, sp_reg + 20)) != 0) {
goto done_syscall;
}
case 5:
if ((ret = get_user_ual(arg5, sp_reg + 16)) != 0) {
goto done_syscall;
}
default:
break;
}
ret = do_syscall(env, env->active_tc.gpr[2],
env->active_tc.gpr[4],
env->active_tc.gpr[5],
env->active_tc.gpr[6],
env->active_tc.gpr[7],
arg5, arg6, arg7, arg8);
}
done_syscall:
# else
ret = do_syscall(env, env->active_tc.gpr[2],
env->active_tc.gpr[4], env->active_tc.gpr[5],
env->active_tc.gpr[6], env->active_tc.gpr[7],
env->active_tc.gpr[8], env->active_tc.gpr[9],
env->active_tc.gpr[10], env->active_tc.gpr[11]);
# endif /* O32 */
if (ret == -TARGET_QEMU_ESIGRETURN) {
/* Returning from a successful sigreturn syscall.
Avoid clobbering register state. */
break;
}
if ((abi_ulong)ret >= (abi_ulong)-1133) {
env->active_tc.gpr[7] = 1; /* error flag */
ret = -ret;
} else {
env->active_tc.gpr[7] = 0; /* error flag */
}
env->active_tc.gpr[2] = ret;
break;
case EXCP_TLBL:
case EXCP_TLBS:
case EXCP_AdEL:
case EXCP_AdES:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->CP0_BadVAddr;
queue_signal(env, info.si_signo, &info);
break;
case EXCP_CpU:
case EXCP_RI:
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = 0;
queue_signal(env, info.si_signo, &info);
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig(cs, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
case EXCP_SC:
if (do_store_exclusive(env)) {
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->active_tc.PC;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP_DSPDIS:
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_ILLOPC;
queue_signal(env, info.si_signo, &info);
break;
/* The code below was inspired by the MIPS Linux kernel trap
* handling code in arch/mips/kernel/traps.c.
*/
case EXCP_BREAK:
{
abi_ulong trap_instr;
unsigned int code;
if (env->hflags & MIPS_HFLAG_M16) {
if (env->insn_flags & ASE_MICROMIPS) {
/* microMIPS mode */
ret = get_user_u16(trap_instr, env->active_tc.PC);
if (ret != 0) {
goto error;
}
if ((trap_instr >> 10) == 0x11) {
/* 16-bit instruction */
code = trap_instr & 0xf;
} else {
/* 32-bit instruction */
abi_ulong instr_lo;
ret = get_user_u16(instr_lo,
env->active_tc.PC + 2);
if (ret != 0) {
goto error;
}
trap_instr = (trap_instr << 16) | instr_lo;
code = ((trap_instr >> 6) & ((1 << 20) - 1));
/* Unfortunately, microMIPS also suffers from
the old assembler bug... */
if (code >= (1 << 10)) {
code >>= 10;
}
}
} else {
/* MIPS16e mode */
ret = get_user_u16(trap_instr, env->active_tc.PC);
if (ret != 0) {
goto error;
}
code = (trap_instr >> 6) & 0x3f;
}
} else {
ret = get_user_u32(trap_instr, env->active_tc.PC);
if (ret != 0) {
goto error;
}
/* As described in the original Linux kernel code, the
* below checks on 'code' are to work around an old
* assembly bug.
*/
code = ((trap_instr >> 6) & ((1 << 20) - 1));
if (code >= (1 << 10)) {
code >>= 10;
}
}
if (do_break(env, &info, code) != 0) {
goto error;
}
}
break;
case EXCP_TRAP:
{
abi_ulong trap_instr;
unsigned int code = 0;
if (env->hflags & MIPS_HFLAG_M16) {
/* microMIPS mode */
abi_ulong instr[2];
ret = get_user_u16(instr[0], env->active_tc.PC) ||
get_user_u16(instr[1], env->active_tc.PC + 2);
trap_instr = (instr[0] << 16) | instr[1];
} else {
ret = get_user_u32(trap_instr, env->active_tc.PC);
}
if (ret != 0) {
goto error;
}
/* The immediate versions don't provide a code. */
if (!(trap_instr & 0xFC000000)) {
if (env->hflags & MIPS_HFLAG_M16) {
/* microMIPS mode */
code = ((trap_instr >> 12) & ((1 << 4) - 1));
} else {
code = ((trap_instr >> 6) & ((1 << 10) - 1));
}
}
if (do_break(env, &info, code) != 0) {
goto error;
}
}
break;
default:
error:
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
trapnr);
cpu_dump_state(cs, stderr, fprintf, 0);
abort();
}
process_pending_signals(env);
}
}
#endif
#ifdef TARGET_OPENRISC
void cpu_loop(CPUOpenRISCState *env)
{
CPUState *cs = CPU(openrisc_env_get_cpu(env));
int trapnr, gdbsig;
for (;;) {
cpu_exec_start(cs);
trapnr = cpu_openrisc_exec(cs);
cpu_exec_end(cs);
gdbsig = 0;
switch (trapnr) {
case EXCP_RESET:
qemu_log("\nReset request, exit, pc is %#x\n", env->pc);
exit(1);
break;
case EXCP_BUSERR:
qemu_log("\nBus error, exit, pc is %#x\n", env->pc);
gdbsig = TARGET_SIGBUS;
break;
case EXCP_DPF:
case EXCP_IPF:
cpu_dump_state(cs, stderr, fprintf, 0);
gdbsig = TARGET_SIGSEGV;
break;
case EXCP_TICK:
qemu_log("\nTick time interrupt pc is %#x\n", env->pc);
break;
case EXCP_ALIGN:
qemu_log("\nAlignment pc is %#x\n", env->pc);
gdbsig = TARGET_SIGBUS;
break;
case EXCP_ILLEGAL:
qemu_log("\nIllegal instructionpc is %#x\n", env->pc);
gdbsig = TARGET_SIGILL;
break;
case EXCP_INT:
qemu_log("\nExternal interruptpc is %#x\n", env->pc);
break;
case EXCP_DTLBMISS:
case EXCP_ITLBMISS:
qemu_log("\nTLB miss\n");
break;
case EXCP_RANGE:
qemu_log("\nRange\n");
gdbsig = TARGET_SIGSEGV;
break;
case EXCP_SYSCALL:
env->pc += 4; /* 0xc00; */
env->gpr[11] = do_syscall(env,
env->gpr[11], /* return value */
env->gpr[3], /* r3 - r7 are params */
env->gpr[4],
env->gpr[5],
env->gpr[6],
env->gpr[7],
env->gpr[8], 0, 0);
break;
case EXCP_FPE:
qemu_log("\nFloating point error\n");
break;
case EXCP_TRAP:
qemu_log("\nTrap\n");
gdbsig = TARGET_SIGTRAP;
break;
case EXCP_NR:
qemu_log("\nNR\n");
break;
default:
qemu_log("\nqemu: unhandled CPU exception %#x - aborting\n",
trapnr);
cpu_dump_state(cs, stderr, fprintf, 0);
gdbsig = TARGET_SIGILL;
break;
}
if (gdbsig) {
gdb_handlesig(cs, gdbsig);
if (gdbsig != TARGET_SIGTRAP) {
exit(1);
}
}
process_pending_signals(env);
}
}
#endif /* TARGET_OPENRISC */
#ifdef TARGET_SH4
void cpu_loop(CPUSH4State *env)
{
CPUState *cs = CPU(sh_env_get_cpu(env));
int trapnr, ret;
target_siginfo_t info;
while (1) {
cpu_exec_start(cs);
trapnr = cpu_sh4_exec(cs);
cpu_exec_end(cs);
switch (trapnr) {
case 0x160:
env->pc += 2;
ret = do_syscall(env,
env->gregs[3],
env->gregs[4],
env->gregs[5],
env->gregs[6],
env->gregs[7],
env->gregs[0],
env->gregs[1],
0, 0);
env->gregs[0] = ret;
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig(cs, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
case 0xa0:
case 0xc0:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->tea;
queue_signal(env, info.si_signo, &info);
break;
default:
printf ("Unhandled trap: 0x%x\n", trapnr);
cpu_dump_state(cs, stderr, fprintf, 0);
exit (1);
}
process_pending_signals (env);
}
}
#endif
#ifdef TARGET_CRIS
void cpu_loop(CPUCRISState *env)
{
CPUState *cs = CPU(cris_env_get_cpu(env));
int trapnr, ret;
target_siginfo_t info;
while (1) {
cpu_exec_start(cs);
trapnr = cpu_cris_exec(cs);
cpu_exec_end(cs);
switch (trapnr) {
case 0xaa:
{
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->pregs[PR_EDA];
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_BREAK:
ret = do_syscall(env,
env->regs[9],
env->regs[10],
env->regs[11],
env->regs[12],
env->regs[13],
env->pregs[7],
env->pregs[11],
0, 0);
env->regs[10] = ret;
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig(cs, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
default:
printf ("Unhandled trap: 0x%x\n", trapnr);
cpu_dump_state(cs, stderr, fprintf, 0);
exit (1);
}
process_pending_signals (env);
}
}
#endif
#ifdef TARGET_MICROBLAZE
void cpu_loop(CPUMBState *env)
{
CPUState *cs = CPU(mb_env_get_cpu(env));
int trapnr, ret;
target_siginfo_t info;
while (1) {
cpu_exec_start(cs);
trapnr = cpu_mb_exec(cs);
cpu_exec_end(cs);
switch (trapnr) {
case 0xaa:
{
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = 0;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_BREAK:
/* Return address is 4 bytes after the call. */
env->regs[14] += 4;
env->sregs[SR_PC] = env->regs[14];
ret = do_syscall(env,
env->regs[12],
env->regs[5],
env->regs[6],
env->regs[7],
env->regs[8],
env->regs[9],
env->regs[10],
0, 0);
env->regs[3] = ret;
break;
case EXCP_HW_EXCP:
env->regs[17] = env->sregs[SR_PC] + 4;
if (env->iflags & D_FLAG) {
env->sregs[SR_ESR] |= 1 << 12;
env->sregs[SR_PC] -= 4;
/* FIXME: if branch was immed, replay the imm as well. */
}
env->iflags &= ~(IMM_FLAG | D_FLAG);
switch (env->sregs[SR_ESR] & 31) {
case ESR_EC_DIVZERO:
info.si_signo = TARGET_SIGFPE;
info.si_errno = 0;
info.si_code = TARGET_FPE_FLTDIV;
info._sifields._sigfault._addr = 0;
queue_signal(env, info.si_signo, &info);
break;
case ESR_EC_FPU:
info.si_signo = TARGET_SIGFPE;
info.si_errno = 0;
if (env->sregs[SR_FSR] & FSR_IO) {
info.si_code = TARGET_FPE_FLTINV;
}
if (env->sregs[SR_FSR] & FSR_DZ) {
info.si_code = TARGET_FPE_FLTDIV;
}
info._sifields._sigfault._addr = 0;
queue_signal(env, info.si_signo, &info);
break;
default:
printf ("Unhandled hw-exception: 0x%x\n",
env->sregs[SR_ESR] & ESR_EC_MASK);
cpu_dump_state(cs, stderr, fprintf, 0);
exit (1);
break;
}
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig(cs, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
default:
printf ("Unhandled trap: 0x%x\n", trapnr);
cpu_dump_state(cs, stderr, fprintf, 0);
exit (1);
}
process_pending_signals (env);
}
}
#endif
#ifdef TARGET_M68K
void cpu_loop(CPUM68KState *env)
{
CPUState *cs = CPU(m68k_env_get_cpu(env));
int trapnr;
unsigned int n;
target_siginfo_t info;
TaskState *ts = cs->opaque;
for(;;) {
cpu_exec_start(cs);
trapnr = cpu_m68k_exec(cs);
cpu_exec_end(cs);
switch(trapnr) {
case EXCP_ILLEGAL:
{
if (ts->sim_syscalls) {
uint16_t nr;
get_user_u16(nr, env->pc + 2);
env->pc += 4;
do_m68k_simcall(env, nr);
} else {
goto do_sigill;
}
}
break;
case EXCP_HALT_INSN:
/* Semihosing syscall. */
env->pc += 4;
do_m68k_semihosting(env, env->dregs[0]);
break;
case EXCP_LINEA:
case EXCP_LINEF:
case EXCP_UNSUPPORTED:
do_sigill:
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_ILLOPN;
info._sifields._sigfault._addr = env->pc;
queue_signal(env, info.si_signo, &info);
break;
case EXCP_TRAP0:
{
ts->sim_syscalls = 0;
n = env->dregs[0];
env->pc += 2;
env->dregs[0] = do_syscall(env,
n,
env->dregs[1],
env->dregs[2],
env->dregs[3],
env->dregs[4],
env->dregs[5],
env->aregs[0],
0, 0);
}
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_ACCESS:
{
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->mmu.ar;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig(cs, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
default:
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
trapnr);
cpu_dump_state(cs, stderr, fprintf, 0);
abort();
}
process_pending_signals(env);
}
}
#endif /* TARGET_M68K */
#ifdef TARGET_ALPHA
static void do_store_exclusive(CPUAlphaState *env, int reg, int quad)
{
target_ulong addr, val, tmp;
target_siginfo_t info;
int ret = 0;
addr = env->lock_addr;
tmp = env->lock_st_addr;
env->lock_addr = -1;
env->lock_st_addr = 0;
start_exclusive();
mmap_lock();
if (addr == tmp) {
if (quad ? get_user_s64(val, addr) : get_user_s32(val, addr)) {
goto do_sigsegv;
}
if (val == env->lock_value) {
tmp = env->ir[reg];
if (quad ? put_user_u64(tmp, addr) : put_user_u32(tmp, addr)) {
goto do_sigsegv;
}
ret = 1;
}
}
env->ir[reg] = ret;
env->pc += 4;
mmap_unlock();
end_exclusive();
return;
do_sigsegv:
mmap_unlock();
end_exclusive();
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = addr;
queue_signal(env, TARGET_SIGSEGV, &info);
}
void cpu_loop(CPUAlphaState *env)
{
CPUState *cs = CPU(alpha_env_get_cpu(env));
int trapnr;
target_siginfo_t info;
abi_long sysret;
while (1) {
cpu_exec_start(cs);
trapnr = cpu_alpha_exec(cs);
cpu_exec_end(cs);
/* All of the traps imply a transition through PALcode, which
implies an REI instruction has been executed. Which means
that the intr_flag should be cleared. */
env->intr_flag = 0;
switch (trapnr) {
case EXCP_RESET:
fprintf(stderr, "Reset requested. Exit\n");
exit(1);
break;
case EXCP_MCHK:
fprintf(stderr, "Machine check exception. Exit\n");
exit(1);
break;
case EXCP_SMP_INTERRUPT:
case EXCP_CLK_INTERRUPT:
case EXCP_DEV_INTERRUPT:
fprintf(stderr, "External interrupt. Exit\n");
exit(1);
break;
case EXCP_MMFAULT:
env->lock_addr = -1;
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = (page_get_flags(env->trap_arg0) & PAGE_VALID
? TARGET_SEGV_ACCERR : TARGET_SEGV_MAPERR);
info._sifields._sigfault._addr = env->trap_arg0;
queue_signal(env, info.si_signo, &info);
break;
case EXCP_UNALIGN:
env->lock_addr = -1;
info.si_signo = TARGET_SIGBUS;
info.si_errno = 0;
info.si_code = TARGET_BUS_ADRALN;
info._sifields._sigfault._addr = env->trap_arg0;
queue_signal(env, info.si_signo, &info);
break;
case EXCP_OPCDEC:
do_sigill:
env->lock_addr = -1;
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_ILLOPC;
info._sifields._sigfault._addr = env->pc;
queue_signal(env, info.si_signo, &info);
break;
case EXCP_ARITH:
env->lock_addr = -1;
info.si_signo = TARGET_SIGFPE;
info.si_errno = 0;
info.si_code = TARGET_FPE_FLTINV;
info._sifields._sigfault._addr = env->pc;
queue_signal(env, info.si_signo, &info);
break;
case EXCP_FEN:
/* No-op. Linux simply re-enables the FPU. */
break;
case EXCP_CALL_PAL:
env->lock_addr = -1;
switch (env->error_code) {
case 0x80:
/* BPT */
info.si_signo = TARGET_SIGTRAP;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
info._sifields._sigfault._addr = env->pc;
queue_signal(env, info.si_signo, &info);
break;
case 0x81:
/* BUGCHK */
info.si_signo = TARGET_SIGTRAP;
info.si_errno = 0;
info.si_code = 0;
info._sifields._sigfault._addr = env->pc;
queue_signal(env, info.si_signo, &info);
break;
case 0x83:
/* CALLSYS */
trapnr = env->ir[IR_V0];
sysret = do_syscall(env, trapnr,
env->ir[IR_A0], env->ir[IR_A1],
env->ir[IR_A2], env->ir[IR_A3],
env->ir[IR_A4], env->ir[IR_A5],
0, 0);
if (trapnr == TARGET_NR_sigreturn
|| trapnr == TARGET_NR_rt_sigreturn) {
break;
}
/* Syscall writes 0 to V0 to bypass error check, similar
to how this is handled internal to Linux kernel.
(Ab)use trapnr temporarily as boolean indicating error. */
trapnr = (env->ir[IR_V0] != 0 && sysret < 0);
env->ir[IR_V0] = (trapnr ? -sysret : sysret);
env->ir[IR_A3] = trapnr;
break;
case 0x86:
/* IMB */
/* ??? We can probably elide the code using page_unprotect
that is checking for self-modifying code. Instead we
could simply call tb_flush here. Until we work out the
changes required to turn off the extra write protection,
this can be a no-op. */
break;
case 0x9E:
/* RDUNIQUE */
/* Handled in the translator for usermode. */
abort();
case 0x9F:
/* WRUNIQUE */
/* Handled in the translator for usermode. */
abort();
case 0xAA:
/* GENTRAP */
info.si_signo = TARGET_SIGFPE;
switch (env->ir[IR_A0]) {
case TARGET_GEN_INTOVF:
info.si_code = TARGET_FPE_INTOVF;
break;
case TARGET_GEN_INTDIV:
info.si_code = TARGET_FPE_INTDIV;
break;
case TARGET_GEN_FLTOVF:
info.si_code = TARGET_FPE_FLTOVF;
break;
case TARGET_GEN_FLTUND:
info.si_code = TARGET_FPE_FLTUND;
break;
case TARGET_GEN_FLTINV:
info.si_code = TARGET_FPE_FLTINV;
break;
case TARGET_GEN_FLTINE:
info.si_code = TARGET_FPE_FLTRES;
break;
case TARGET_GEN_ROPRAND:
info.si_code = 0;
break;
default:
info.si_signo = TARGET_SIGTRAP;
info.si_code = 0;
break;
}
info.si_errno = 0;
info._sifields._sigfault._addr = env->pc;
queue_signal(env, info.si_signo, &info);
break;
default:
goto do_sigill;
}
break;
case EXCP_DEBUG:
info.si_signo = gdb_handlesig(cs, TARGET_SIGTRAP);
if (info.si_signo) {
env->lock_addr = -1;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP_STL_C:
case EXCP_STQ_C:
do_store_exclusive(env, env->error_code, trapnr - EXCP_STL_C);
break;
case EXCP_INTERRUPT:
/* Just indicate that signals should be handled asap. */
break;
default:
printf ("Unhandled trap: 0x%x\n", trapnr);
cpu_dump_state(cs, stderr, fprintf, 0);
exit (1);
}
process_pending_signals (env);
}
}
#endif /* TARGET_ALPHA */
#ifdef TARGET_S390X
void cpu_loop(CPUS390XState *env)
{
CPUState *cs = CPU(s390_env_get_cpu(env));
int trapnr, n, sig;
target_siginfo_t info;
target_ulong addr;
while (1) {
cpu_exec_start(cs);
trapnr = cpu_s390x_exec(cs);
cpu_exec_end(cs);
switch (trapnr) {
case EXCP_INTERRUPT:
/* Just indicate that signals should be handled asap. */
break;
case EXCP_SVC:
n = env->int_svc_code;
if (!n) {
/* syscalls > 255 */
n = env->regs[1];
}
env->psw.addr += env->int_svc_ilen;
env->regs[2] = do_syscall(env, n, env->regs[2], env->regs[3],
env->regs[4], env->regs[5],
env->regs[6], env->regs[7], 0, 0);
break;
case EXCP_DEBUG:
sig = gdb_handlesig(cs, TARGET_SIGTRAP);
if (sig) {
n = TARGET_TRAP_BRKPT;
goto do_signal_pc;
}
break;
case EXCP_PGM:
n = env->int_pgm_code;
switch (n) {
case PGM_OPERATION:
case PGM_PRIVILEGED:
sig = TARGET_SIGILL;
n = TARGET_ILL_ILLOPC;
goto do_signal_pc;
case PGM_PROTECTION:
case PGM_ADDRESSING:
sig = TARGET_SIGSEGV;
/* XXX: check env->error_code */
n = TARGET_SEGV_MAPERR;
addr = env->__excp_addr;
goto do_signal;
case PGM_EXECUTE:
case PGM_SPECIFICATION:
case PGM_SPECIAL_OP:
case PGM_OPERAND:
do_sigill_opn:
sig = TARGET_SIGILL;
n = TARGET_ILL_ILLOPN;
goto do_signal_pc;
case PGM_FIXPT_OVERFLOW:
sig = TARGET_SIGFPE;
n = TARGET_FPE_INTOVF;
goto do_signal_pc;
case PGM_FIXPT_DIVIDE:
sig = TARGET_SIGFPE;
n = TARGET_FPE_INTDIV;
goto do_signal_pc;
case PGM_DATA:
n = (env->fpc >> 8) & 0xff;
if (n == 0xff) {
/* compare-and-trap */
goto do_sigill_opn;
} else {
/* An IEEE exception, simulated or otherwise. */
if (n & 0x80) {
n = TARGET_FPE_FLTINV;
} else if (n & 0x40) {
n = TARGET_FPE_FLTDIV;
} else if (n & 0x20) {
n = TARGET_FPE_FLTOVF;
} else if (n & 0x10) {
n = TARGET_FPE_FLTUND;
} else if (n & 0x08) {
n = TARGET_FPE_FLTRES;
} else {
/* ??? Quantum exception; BFP, DFP error. */
goto do_sigill_opn;
}
sig = TARGET_SIGFPE;
goto do_signal_pc;
}
default:
fprintf(stderr, "Unhandled program exception: %#x\n", n);
cpu_dump_state(cs, stderr, fprintf, 0);
exit(1);
}
break;
do_signal_pc:
addr = env->psw.addr;
do_signal:
info.si_signo = sig;
info.si_errno = 0;
info.si_code = n;
info._sifields._sigfault._addr = addr;
queue_signal(env, info.si_signo, &info);
break;
default:
fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr);
cpu_dump_state(cs, stderr, fprintf, 0);
exit(1);
}
process_pending_signals (env);
}
}
#endif /* TARGET_S390X */
#ifdef TARGET_TILEGX
static void gen_sigsegv_maperr(CPUTLGState *env, target_ulong addr)
{
target_siginfo_t info;
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = addr;
queue_signal(env, info.si_signo, &info);
}
static void gen_sigill_reg(CPUTLGState *env)
{
target_siginfo_t info;
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_PRVREG;
info._sifields._sigfault._addr = env->pc;
queue_signal(env, info.si_signo, &info);
}
static void set_regval(CPUTLGState *env, uint8_t reg, uint64_t val)
{
if (unlikely(reg >= TILEGX_R_COUNT)) {
switch (reg) {
case TILEGX_R_SN:
case TILEGX_R_ZERO:
return;
case TILEGX_R_IDN0:
case TILEGX_R_IDN1:
case TILEGX_R_UDN0:
case TILEGX_R_UDN1:
case TILEGX_R_UDN2:
case TILEGX_R_UDN3:
gen_sigill_reg(env);
return;
default:
g_assert_not_reached();
}
}
env->regs[reg] = val;
}
/*
* Compare the 8-byte contents of the CmpValue SPR with the 8-byte value in
* memory at the address held in the first source register. If the values are
* not equal, then no memory operation is performed. If the values are equal,
* the 8-byte quantity from the second source register is written into memory
* at the address held in the first source register. In either case, the result
* of the instruction is the value read from memory. The compare and write to
* memory are atomic and thus can be used for synchronization purposes. This
* instruction only operates for addresses aligned to a 8-byte boundary.
* Unaligned memory access causes an Unaligned Data Reference interrupt.
*
* Functional Description (64-bit)
* uint64_t memVal = memoryReadDoubleWord (rf[SrcA]);
* rf[Dest] = memVal;
* if (memVal == SPR[CmpValueSPR])
* memoryWriteDoubleWord (rf[SrcA], rf[SrcB]);
*
* Functional Description (32-bit)
* uint64_t memVal = signExtend32 (memoryReadWord (rf[SrcA]));
* rf[Dest] = memVal;
* if (memVal == signExtend32 (SPR[CmpValueSPR]))
* memoryWriteWord (rf[SrcA], rf[SrcB]);
*
*
* This function also processes exch and exch4 which need not process SPR.
*/
static void do_exch(CPUTLGState *env, bool quad, bool cmp)
{
target_ulong addr;
target_long val, sprval;
start_exclusive();
addr = env->atomic_srca;
if (quad ? get_user_s64(val, addr) : get_user_s32(val, addr)) {
goto sigsegv_maperr;
}
if (cmp) {
if (quad) {
sprval = env->spregs[TILEGX_SPR_CMPEXCH];
} else {
sprval = sextract64(env->spregs[TILEGX_SPR_CMPEXCH], 0, 32);
}
}
if (!cmp || val == sprval) {
target_long valb = env->atomic_srcb;
if (quad ? put_user_u64(valb, addr) : put_user_u32(valb, addr)) {
goto sigsegv_maperr;
}
}
set_regval(env, env->atomic_dstr, val);
end_exclusive();
return;
sigsegv_maperr:
end_exclusive();
gen_sigsegv_maperr(env, addr);
}
static void do_fetch(CPUTLGState *env, int trapnr, bool quad)
{
int8_t write = 1;
target_ulong addr;
target_long val, valb;
start_exclusive();
addr = env->atomic_srca;
valb = env->atomic_srcb;
if (quad ? get_user_s64(val, addr) : get_user_s32(val, addr)) {
goto sigsegv_maperr;
}
switch (trapnr) {
case TILEGX_EXCP_OPCODE_FETCHADD:
case TILEGX_EXCP_OPCODE_FETCHADD4:
valb += val;
break;
case TILEGX_EXCP_OPCODE_FETCHADDGEZ:
valb += val;
if (valb < 0) {
write = 0;
}
break;
case TILEGX_EXCP_OPCODE_FETCHADDGEZ4:
valb += val;
if ((int32_t)valb < 0) {
write = 0;
}
break;
case TILEGX_EXCP_OPCODE_FETCHAND:
case TILEGX_EXCP_OPCODE_FETCHAND4:
valb &= val;
break;
case TILEGX_EXCP_OPCODE_FETCHOR:
case TILEGX_EXCP_OPCODE_FETCHOR4:
valb |= val;
break;
default:
g_assert_not_reached();
}
if (write) {
if (quad ? put_user_u64(valb, addr) : put_user_u32(valb, addr)) {
goto sigsegv_maperr;
}
}
set_regval(env, env->atomic_dstr, val);
end_exclusive();
return;
sigsegv_maperr:
end_exclusive();
gen_sigsegv_maperr(env, addr);
}
void cpu_loop(CPUTLGState *env)
{
CPUState *cs = CPU(tilegx_env_get_cpu(env));
int trapnr;
while (1) {
cpu_exec_start(cs);
trapnr = cpu_tilegx_exec(cs);
cpu_exec_end(cs);
switch (trapnr) {
case TILEGX_EXCP_SYSCALL:
env->regs[TILEGX_R_RE] = do_syscall(env, env->regs[TILEGX_R_NR],
env->regs[0], env->regs[1],
env->regs[2], env->regs[3],
env->regs[4], env->regs[5],
env->regs[6], env->regs[7]);
env->regs[TILEGX_R_ERR] = TILEGX_IS_ERRNO(env->regs[TILEGX_R_RE])
? - env->regs[TILEGX_R_RE]
: 0;
break;
case TILEGX_EXCP_OPCODE_EXCH:
do_exch(env, true, false);
break;
case TILEGX_EXCP_OPCODE_EXCH4:
do_exch(env, false, false);
break;
case TILEGX_EXCP_OPCODE_CMPEXCH:
do_exch(env, true, true);
break;
case TILEGX_EXCP_OPCODE_CMPEXCH4:
do_exch(env, false, true);
break;
case TILEGX_EXCP_OPCODE_FETCHADD:
case TILEGX_EXCP_OPCODE_FETCHADDGEZ:
case TILEGX_EXCP_OPCODE_FETCHAND:
case TILEGX_EXCP_OPCODE_FETCHOR:
do_fetch(env, trapnr, true);
break;
case TILEGX_EXCP_OPCODE_FETCHADD4:
case TILEGX_EXCP_OPCODE_FETCHADDGEZ4:
case TILEGX_EXCP_OPCODE_FETCHAND4:
case TILEGX_EXCP_OPCODE_FETCHOR4:
do_fetch(env, trapnr, false);
break;
case TILEGX_EXCP_REG_IDN_ACCESS:
case TILEGX_EXCP_REG_UDN_ACCESS:
gen_sigill_reg(env);
break;
case TILEGX_EXCP_SEGV:
gen_sigsegv_maperr(env, env->excaddr);
break;
default:
fprintf(stderr, "trapnr is %d[0x%x].\n", trapnr, trapnr);
g_assert_not_reached();
}
process_pending_signals(env);
}
}
#endif
THREAD CPUState *thread_cpu;
void task_settid(TaskState *ts)
{
if (ts->ts_tid == 0) {
ts->ts_tid = (pid_t)syscall(SYS_gettid);
}
}
void stop_all_tasks(void)
{
/*
* We trust that when using NPTL, start_exclusive()
* handles thread stopping correctly.
*/
start_exclusive();
}
/* Assumes contents are already zeroed. */
void init_task_state(TaskState *ts)
{
int i;
ts->used = 1;
ts->first_free = ts->sigqueue_table;
for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) {
ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
}
ts->sigqueue_table[i].next = NULL;
}
CPUArchState *cpu_copy(CPUArchState *env)
{
CPUState *cpu = ENV_GET_CPU(env);
cpu: Make cpu_init() return QOM CPUState object Instead of making cpu_init() return CPUArchState, return CPUState. Changes were made using the Coccinelle semantic patch below. @@ typedef CPUState; identifier e; expression args; type CPUArchState; @@ - e = + cpu = cpu_init(args); - if (!e) { + if (!cpu) { ... } - cpu = ENV_GET_CPU(env); + e = cpu->env_ptr; @@ identifier new_env, new_cpu, env, cpu; type CPUArchState; expression args; @@ -{ - CPUState *cpu = ENV_GET_CPU(env); - CPUArchState *new_env = cpu_init(args); - CPUState *new_cpu = ENV_GET_CPU(new_env); +{ + CPUState *cpu = ENV_GET_CPU(env); + CPUState *new_cpu = cpu_init(args); + CPUArchState *new_env = new_cpu->env_ptr; ... } @@ identifier c, cpu_init_func, cpu_model; type StateType, CPUType; @@ -static inline StateType* cpu_init(const char *cpu_model) -{ - CPUType *c = cpu_init_func(cpu_model); ( - if (c == NULL) { - return NULL; - } - return &c->env; | - if (c) { - return &c->env; - } - return NULL; ) -} +#define cpu_init(cpu_model) CPU(cpu_init_func(cpu_model)) @@ identifier cpu_init_func; identifier model; @@ -#define cpu_init(model) (&cpu_init_func(model)->env) +#define cpu_init(model) CPU(cpu_init_func(model)) Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Cc: Blue Swirl <blauwirbel@gmail.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Riku Voipio <riku.voipio@iki.fi> Cc: Richard Henderson <rth@twiddle.net> Cc: Peter Maydell <peter.maydell@linaro.org> Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Michael Walle <michael@walle.cc> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Leon Alrae <leon.alrae@imgtec.com> Cc: Anthony Green <green@moxielogic.com> Cc: Jia Liu <proljc@gmail.com> Cc: Alexander Graf <agraf@suse.de> Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Cc: Max Filippov <jcmvbkbc@gmail.com> [AF: Fixed up cpu_copy() manually] Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-02-26 23:37:49 +03:00
CPUState *new_cpu = cpu_init(cpu_model);
CPUArchState *new_env = new_cpu->env_ptr;
CPUBreakpoint *bp;
CPUWatchpoint *wp;
/* Reset non arch specific state */
cpu_reset(new_cpu);
memcpy(new_env, env, sizeof(CPUArchState));
/* Clone all break/watchpoints.
Note: Once we support ptrace with hw-debug register access, make sure
BP_CPU break/watchpoints are handled correctly on clone. */
QTAILQ_INIT(&new_cpu->breakpoints);
QTAILQ_INIT(&new_cpu->watchpoints);
QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) {
cpu_breakpoint_insert(new_cpu, bp->pc, bp->flags, NULL);
}
QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) {
cpu_watchpoint_insert(new_cpu, wp->vaddr, wp->len, wp->flags, NULL);
}
return new_env;
}
static void handle_arg_help(const char *arg)
{
usage();
}
static void handle_arg_log(const char *arg)
{
int mask;
mask = qemu_str_to_log_mask(arg);
if (!mask) {
qemu_print_log_usage(stdout);
exit(1);
}
qemu_set_log(mask);
}
static void handle_arg_log_filename(const char *arg)
{
qemu_set_log_filename(arg);
}
static void handle_arg_set_env(const char *arg)
{
char *r, *p, *token;
r = p = strdup(arg);
while ((token = strsep(&p, ",")) != NULL) {
if (envlist_setenv(envlist, token) != 0) {
usage();
}
}
free(r);
}
static void handle_arg_unset_env(const char *arg)
{
char *r, *p, *token;
r = p = strdup(arg);
while ((token = strsep(&p, ",")) != NULL) {
if (envlist_unsetenv(envlist, token) != 0) {
usage();
}
}
free(r);
}
static void handle_arg_argv0(const char *arg)
{
argv0 = strdup(arg);
}
static void handle_arg_stack_size(const char *arg)
{
char *p;
guest_stack_size = strtoul(arg, &p, 0);
if (guest_stack_size == 0) {
usage();
}
if (*p == 'M') {
guest_stack_size *= 1024 * 1024;
} else if (*p == 'k' || *p == 'K') {
guest_stack_size *= 1024;
}
}
static void handle_arg_ld_prefix(const char *arg)
{
interp_prefix = strdup(arg);
}
static void handle_arg_pagesize(const char *arg)
{
qemu_host_page_size = atoi(arg);
if (qemu_host_page_size == 0 ||
(qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
fprintf(stderr, "page size must be a power of two\n");
exit(1);
}
}
static void handle_arg_randseed(const char *arg)
{
unsigned long long seed;
if (parse_uint_full(arg, &seed, 0) != 0 || seed > UINT_MAX) {
fprintf(stderr, "Invalid seed number: %s\n", arg);
exit(1);
}
srand(seed);
}
static void handle_arg_gdb(const char *arg)
{
gdbstub_port = atoi(arg);
}
static void handle_arg_uname(const char *arg)
{
qemu_uname_release = strdup(arg);
}
static void handle_arg_cpu(const char *arg)
{
cpu_model = strdup(arg);
if (cpu_model == NULL || is_help_option(cpu_model)) {
/* XXX: implement xxx_cpu_list for targets that still miss it */
#if defined(cpu_list)
cpu_list(stdout, &fprintf);
#endif
exit(1);
}
}
static void handle_arg_guest_base(const char *arg)
{
guest_base = strtol(arg, NULL, 0);
have_guest_base = 1;
}
static void handle_arg_reserved_va(const char *arg)
{
char *p;
int shift = 0;
reserved_va = strtoul(arg, &p, 0);
switch (*p) {
case 'k':
case 'K':
shift = 10;
break;
case 'M':
shift = 20;
break;
case 'G':
shift = 30;
break;
}
if (shift) {
unsigned long unshifted = reserved_va;
p++;
reserved_va <<= shift;
if (((reserved_va >> shift) != unshifted)
#if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS
|| (reserved_va > (1ul << TARGET_VIRT_ADDR_SPACE_BITS))
#endif
) {
fprintf(stderr, "Reserved virtual address too big\n");
exit(1);
}
}
if (*p) {
fprintf(stderr, "Unrecognised -R size suffix '%s'\n", p);
exit(1);
}
}
static void handle_arg_singlestep(const char *arg)
{
singlestep = 1;
}
static void handle_arg_strace(const char *arg)
{
do_strace = 1;
}
static void handle_arg_version(const char *arg)
{
printf("qemu-" TARGET_NAME " version " QEMU_VERSION QEMU_PKGVERSION
", Copyright (c) 2003-2008 Fabrice Bellard\n");
exit(0);
}
struct qemu_argument {
const char *argv;
const char *env;
bool has_arg;
void (*handle_opt)(const char *arg);
const char *example;
const char *help;
};
static const struct qemu_argument arg_table[] = {
{"h", "", false, handle_arg_help,
"", "print this help"},
{"g", "QEMU_GDB", true, handle_arg_gdb,
"port", "wait gdb connection to 'port'"},
{"L", "QEMU_LD_PREFIX", true, handle_arg_ld_prefix,
"path", "set the elf interpreter prefix to 'path'"},
{"s", "QEMU_STACK_SIZE", true, handle_arg_stack_size,
"size", "set the stack size to 'size' bytes"},
{"cpu", "QEMU_CPU", true, handle_arg_cpu,
"model", "select CPU (-cpu help for list)"},
{"E", "QEMU_SET_ENV", true, handle_arg_set_env,
"var=value", "sets targets environment variable (see below)"},
{"U", "QEMU_UNSET_ENV", true, handle_arg_unset_env,
"var", "unsets targets environment variable (see below)"},
{"0", "QEMU_ARGV0", true, handle_arg_argv0,
"argv0", "forces target process argv[0] to be 'argv0'"},
{"r", "QEMU_UNAME", true, handle_arg_uname,
"uname", "set qemu uname release string to 'uname'"},
{"B", "QEMU_GUEST_BASE", true, handle_arg_guest_base,
"address", "set guest_base address to 'address'"},
{"R", "QEMU_RESERVED_VA", true, handle_arg_reserved_va,
"size", "reserve 'size' bytes for guest virtual address space"},
{"d", "QEMU_LOG", true, handle_arg_log,
"item[,...]", "enable logging of specified items "
"(use '-d help' for a list of items)"},
{"D", "QEMU_LOG_FILENAME", true, handle_arg_log_filename,
"logfile", "write logs to 'logfile' (default stderr)"},
{"p", "QEMU_PAGESIZE", true, handle_arg_pagesize,
"pagesize", "set the host page size to 'pagesize'"},
{"singlestep", "QEMU_SINGLESTEP", false, handle_arg_singlestep,
"", "run in singlestep mode"},
{"strace", "QEMU_STRACE", false, handle_arg_strace,
"", "log system calls"},
{"seed", "QEMU_RAND_SEED", true, handle_arg_randseed,
"", "Seed for pseudo-random number generator"},
{"version", "QEMU_VERSION", false, handle_arg_version,
"", "display version information and exit"},
{NULL, NULL, false, NULL, NULL, NULL}
};
static void usage(void)
{
const struct qemu_argument *arginfo;
int maxarglen;
int maxenvlen;
printf("usage: qemu-" TARGET_NAME " [options] program [arguments...]\n"
"Linux CPU emulator (compiled for " TARGET_NAME " emulation)\n"
"\n"
"Options and associated environment variables:\n"
"\n");
/* Calculate column widths. We must always have at least enough space
* for the column header.
*/
maxarglen = strlen("Argument");
maxenvlen = strlen("Env-variable");
for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
int arglen = strlen(arginfo->argv);
if (arginfo->has_arg) {
arglen += strlen(arginfo->example) + 1;
}
if (strlen(arginfo->env) > maxenvlen) {
maxenvlen = strlen(arginfo->env);
}
if (arglen > maxarglen) {
maxarglen = arglen;
}
}
printf("%-*s %-*s Description\n", maxarglen+1, "Argument",
maxenvlen, "Env-variable");
for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
if (arginfo->has_arg) {
printf("-%s %-*s %-*s %s\n", arginfo->argv,
(int)(maxarglen - strlen(arginfo->argv) - 1),
arginfo->example, maxenvlen, arginfo->env, arginfo->help);
} else {
printf("-%-*s %-*s %s\n", maxarglen, arginfo->argv,
maxenvlen, arginfo->env,
arginfo->help);
}
}
printf("\n"
"Defaults:\n"
"QEMU_LD_PREFIX = %s\n"
"QEMU_STACK_SIZE = %ld byte\n",
interp_prefix,
guest_stack_size);
printf("\n"
"You can use -E and -U options or the QEMU_SET_ENV and\n"
"QEMU_UNSET_ENV environment variables to set and unset\n"
"environment variables for the target process.\n"
"It is possible to provide several variables by separating them\n"
"by commas in getsubopt(3) style. Additionally it is possible to\n"
"provide the -E and -U options multiple times.\n"
"The following lines are equivalent:\n"
" -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
" -E var1=val2,var2=val2 -U LD_PRELOAD,LD_DEBUG\n"
" QEMU_SET_ENV=var1=val2,var2=val2 QEMU_UNSET_ENV=LD_PRELOAD,LD_DEBUG\n"
"Note that if you provide several changes to a single variable\n"
"the last change will stay in effect.\n");
exit(1);
}
static int parse_args(int argc, char **argv)
{
const char *r;
int optind;
const struct qemu_argument *arginfo;
for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
if (arginfo->env == NULL) {
continue;
}
r = getenv(arginfo->env);
if (r != NULL) {
arginfo->handle_opt(r);
}
}
optind = 1;
for (;;) {
if (optind >= argc) {
break;
}
r = argv[optind];
if (r[0] != '-') {
break;
}
optind++;
r++;
if (!strcmp(r, "-")) {
break;
}
for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
if (!strcmp(r, arginfo->argv)) {
if (arginfo->has_arg) {
if (optind >= argc) {
usage();
}
arginfo->handle_opt(argv[optind]);
optind++;
} else {
arginfo->handle_opt(NULL);
}
break;
}
}
/* no option matched the current argv */
if (arginfo->handle_opt == NULL) {
usage();
}
}
if (optind >= argc) {
usage();
}
filename = argv[optind];
exec_path = argv[optind];
return optind;
}
int main(int argc, char **argv, char **envp)
{
struct target_pt_regs regs1, *regs = &regs1;
struct image_info info1, *info = &info1;
struct linux_binprm bprm;
linux-user: fix memory leaks with NPTL emulation Running programs that create large numbers of threads, such as this snippet from libstdc++'s pthread7-rope.cc: const int max_thread_count = 4; const int max_loop_count = 10000; ... for (int j = 0; j < max_loop_count; j++) { ... for (int i = 0; i < max_thread_count; i++) pthread_create (&tid[i], NULL, thread_main, 0); for (int i = 0; i < max_thread_count; i++) pthread_join (tid[i], NULL); } in user-mode emulation will quickly run out of memory. This is caused by a failure to free memory in do_syscall prior to thread exit: /* TODO: Free CPU state. */ pthread_exit(NULL); The first step in fixing this is to make all TaskStates used by QEMU dynamically allocated. The TaskState used by the initial thread was not, as it was allocated on main's stack. So fix that, free the cpu_env, free the TaskState, and we're home free, right? Not exactly. When we create a thread, we do: ts = qemu_mallocz(sizeof(TaskState) + NEW_STACK_SIZE); ... new_stack = ts->stack; ... ret = pthread_attr_setstack(&attr, new_stack, NEW_STACK_SIZE); If we blindly free the TaskState, then, we yank the current (host) thread's stack out from underneath it while it still has things to do, like calling pthread_exit. That causes problems, as you might expect. The solution adopted here is to let the C library allocate the thread's stack (so the C library can properly clean it up at pthread_exit) and provide a hint that we want NEW_STACK_SIZE bytes of stack. With those two changes, we're done, right? Well, almost. You see, we're creating all these host threads and their parent threads never bother to check that their children are finished. There's no good place for the parent threads to do so. Therefore, we need to create the threads in a detached state so the parent thread doesn't have to call pthread_join on the child to release the child's resources; the child does so automatically. With those three major changes, we can comfortably run programs like the above without exhausting memory. We do need to delete 'stack' from the TaskState structure. Signed-off-by: Nathan Froyd <froydnj@codesourcery.com> Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
2010-10-29 18:48:57 +04:00
TaskState *ts;
CPUArchState *env;
CPUState *cpu;
int optind;
char **target_environ, **wrk;
char **target_argv;
int target_argc;
int i;
int ret;
int execfd;
module_call_init(MODULE_INIT_QOM);
if ((envlist = envlist_create()) == NULL) {
(void) fprintf(stderr, "Unable to allocate envlist\n");
exit(1);
}
/* add current environment into the list */
for (wrk = environ; *wrk != NULL; wrk++) {
(void) envlist_setenv(envlist, *wrk);
}
/* Read the stack limit from the kernel. If it's "unlimited",
then we can do little else besides use the default. */
{
struct rlimit lim;
if (getrlimit(RLIMIT_STACK, &lim) == 0
&& lim.rlim_cur != RLIM_INFINITY
&& lim.rlim_cur == (target_long)lim.rlim_cur) {
guest_stack_size = lim.rlim_cur;
}
}
cpu_model = NULL;
Add cpu model configuration support.. This is a reimplementation of prior versions which adds the ability to define cpu models for contemporary processors. The added models are likewise selected via -cpu <name>, and are intended to displace the existing convention of "-cpu qemu64" augmented with a series of feature flags. A primary motivation was determination of a least common denominator within a given processor class to simplify guest migration. It is still possible to modify an arbitrary model via additional feature flags however the goal here was to make doing so unnecessary in typical usage. The other consideration was providing models names reflective of current processors. Both AMD and Intel have reviewed the models in terms of balancing generality of migration vs. excessive feature downgrade relative to released silicon. This version of the patch replaces the prior hard wired definitions with a configuration file approach for new models. Existing models are thus far left as-is but may easily be transitioned to (or may be overridden by) the configuration file representation. Proposed new model definitions are provided here for current AMD and Intel processors. Each model consists of a name used to select it on the command line (-cpu <name>), and a model_id which corresponds to a least common denominator commercial instance of the processor class. A table of names/model_ids may be queried via "-cpu ?model": : x86 Opteron_G3 AMD Opteron 23xx (Gen 3 Class Opteron) x86 Opteron_G2 AMD Opteron 22xx (Gen 2 Class Opteron) x86 Opteron_G1 AMD Opteron 240 (Gen 1 Class Opteron) x86 Nehalem Intel Core i7 9xx (Nehalem Class Core i7) x86 Penryn Intel Core 2 Duo P9xxx (Penryn Class Core 2) x86 Conroe Intel Celeron_4x0 (Conroe/Merom Class Core 2) : Also added is "-cpu ?dump" which exhaustively outputs all config data for all defined models, and "-cpu ?cpuid" which enumerates all qemu recognized CPUID feature flags. The pseudo cpuid flag 'check' when added to the feature flag list will warn when feature flags (either implicit in a cpu model or explicit on the command line) would have otherwise been quietly unavailable to a guest: # qemu-system-x86_64 ... -cpu Nehalem,check warning: host cpuid 0000_0001 lacks requested flag 'sse4.2|sse4_2' [0x00100000] warning: host cpuid 0000_0001 lacks requested flag 'popcnt' [0x00800000] A similar 'enforce' pseudo flag exists which in addition to the above causes qemu to error exit if requested flags are unavailable. Configuration data for a cpu model resides in the target config file which by default will be installed as: /usr/local/etc/qemu/target-<arch>.conf The format of this file should be self explanatory given the definitions for the above six models and essentially mimics the structure of the static x86_def_t x86_defs. Encoding of cpuid flags names now allows aliases for both the configuration file and the command line which reconciles some Intel/AMD/Linux/Qemu naming differences. This patch was tested relative to qemu.git. Signed-off-by: john cooper <john.cooper@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-02-20 20:14:59 +03:00
#if defined(cpudef_setup)
cpudef_setup(); /* parse cpu definitions in target config file (TBD) */
#endif
srand(time(NULL));
optind = parse_args(argc, argv);
/* Zero out regs */
memset(regs, 0, sizeof(struct target_pt_regs));
/* Zero out image_info */
memset(info, 0, sizeof(struct image_info));
memset(&bprm, 0, sizeof (bprm));
/* Scan interp_prefix dir for replacement files. */
init_paths(interp_prefix);
init_qemu_uname_release();
if (cpu_model == NULL) {
#if defined(TARGET_I386)
#ifdef TARGET_X86_64
cpu_model = "qemu64";
#else
cpu_model = "qemu32";
#endif
#elif defined(TARGET_ARM)
cpu_model = "any";
#elif defined(TARGET_UNICORE32)
cpu_model = "any";
#elif defined(TARGET_M68K)
cpu_model = "any";
#elif defined(TARGET_SPARC)
#ifdef TARGET_SPARC64
cpu_model = "TI UltraSparc II";
#else
cpu_model = "Fujitsu MB86904";
#endif
#elif defined(TARGET_MIPS)
#if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64)
cpu_model = "5KEf";
#else
cpu_model = "24Kf";
#endif
#elif defined TARGET_OPENRISC
cpu_model = "or1200";
#elif defined(TARGET_PPC)
# ifdef TARGET_PPC64
cpu_model = "POWER7";
# else
cpu_model = "750";
# endif
#elif defined TARGET_SH4
cpu_model = TYPE_SH7785_CPU;
#else
cpu_model = "any";
#endif
}
tcg_exec_init(0);
/* NOTE: we need to init the CPU at this stage to get
qemu_host_page_size */
cpu: Make cpu_init() return QOM CPUState object Instead of making cpu_init() return CPUArchState, return CPUState. Changes were made using the Coccinelle semantic patch below. @@ typedef CPUState; identifier e; expression args; type CPUArchState; @@ - e = + cpu = cpu_init(args); - if (!e) { + if (!cpu) { ... } - cpu = ENV_GET_CPU(env); + e = cpu->env_ptr; @@ identifier new_env, new_cpu, env, cpu; type CPUArchState; expression args; @@ -{ - CPUState *cpu = ENV_GET_CPU(env); - CPUArchState *new_env = cpu_init(args); - CPUState *new_cpu = ENV_GET_CPU(new_env); +{ + CPUState *cpu = ENV_GET_CPU(env); + CPUState *new_cpu = cpu_init(args); + CPUArchState *new_env = new_cpu->env_ptr; ... } @@ identifier c, cpu_init_func, cpu_model; type StateType, CPUType; @@ -static inline StateType* cpu_init(const char *cpu_model) -{ - CPUType *c = cpu_init_func(cpu_model); ( - if (c == NULL) { - return NULL; - } - return &c->env; | - if (c) { - return &c->env; - } - return NULL; ) -} +#define cpu_init(cpu_model) CPU(cpu_init_func(cpu_model)) @@ identifier cpu_init_func; identifier model; @@ -#define cpu_init(model) (&cpu_init_func(model)->env) +#define cpu_init(model) CPU(cpu_init_func(model)) Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Cc: Blue Swirl <blauwirbel@gmail.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Riku Voipio <riku.voipio@iki.fi> Cc: Richard Henderson <rth@twiddle.net> Cc: Peter Maydell <peter.maydell@linaro.org> Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Michael Walle <michael@walle.cc> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Leon Alrae <leon.alrae@imgtec.com> Cc: Anthony Green <green@moxielogic.com> Cc: Jia Liu <proljc@gmail.com> Cc: Alexander Graf <agraf@suse.de> Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Cc: Max Filippov <jcmvbkbc@gmail.com> [AF: Fixed up cpu_copy() manually] Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-02-26 23:37:49 +03:00
cpu = cpu_init(cpu_model);
if (!cpu) {
fprintf(stderr, "Unable to find CPU definition\n");
exit(1);
}
cpu: Make cpu_init() return QOM CPUState object Instead of making cpu_init() return CPUArchState, return CPUState. Changes were made using the Coccinelle semantic patch below. @@ typedef CPUState; identifier e; expression args; type CPUArchState; @@ - e = + cpu = cpu_init(args); - if (!e) { + if (!cpu) { ... } - cpu = ENV_GET_CPU(env); + e = cpu->env_ptr; @@ identifier new_env, new_cpu, env, cpu; type CPUArchState; expression args; @@ -{ - CPUState *cpu = ENV_GET_CPU(env); - CPUArchState *new_env = cpu_init(args); - CPUState *new_cpu = ENV_GET_CPU(new_env); +{ + CPUState *cpu = ENV_GET_CPU(env); + CPUState *new_cpu = cpu_init(args); + CPUArchState *new_env = new_cpu->env_ptr; ... } @@ identifier c, cpu_init_func, cpu_model; type StateType, CPUType; @@ -static inline StateType* cpu_init(const char *cpu_model) -{ - CPUType *c = cpu_init_func(cpu_model); ( - if (c == NULL) { - return NULL; - } - return &c->env; | - if (c) { - return &c->env; - } - return NULL; ) -} +#define cpu_init(cpu_model) CPU(cpu_init_func(cpu_model)) @@ identifier cpu_init_func; identifier model; @@ -#define cpu_init(model) (&cpu_init_func(model)->env) +#define cpu_init(model) CPU(cpu_init_func(model)) Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Cc: Blue Swirl <blauwirbel@gmail.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Riku Voipio <riku.voipio@iki.fi> Cc: Richard Henderson <rth@twiddle.net> Cc: Peter Maydell <peter.maydell@linaro.org> Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Michael Walle <michael@walle.cc> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Leon Alrae <leon.alrae@imgtec.com> Cc: Anthony Green <green@moxielogic.com> Cc: Jia Liu <proljc@gmail.com> Cc: Alexander Graf <agraf@suse.de> Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Cc: Max Filippov <jcmvbkbc@gmail.com> [AF: Fixed up cpu_copy() manually] Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-02-26 23:37:49 +03:00
env = cpu->env_ptr;
cpu_reset(cpu);
thread_cpu = cpu;
if (getenv("QEMU_STRACE")) {
do_strace = 1;
}
if (getenv("QEMU_RAND_SEED")) {
handle_arg_randseed(getenv("QEMU_RAND_SEED"));
}
target_environ = envlist_to_environ(envlist, NULL);
envlist_free(envlist);
/*
* Now that page sizes are configured in cpu_init() we can do
* proper page alignment for guest_base.
*/
guest_base = HOST_PAGE_ALIGN(guest_base);
if (reserved_va || have_guest_base) {
guest_base = init_guest_space(guest_base, reserved_va, 0,
have_guest_base);
if (guest_base == (unsigned long)-1) {
fprintf(stderr, "Unable to reserve 0x%lx bytes of virtual address "
"space for use as guest address space (check your virtual "
"memory ulimit setting or reserve less using -R option)\n",
reserved_va);
exit(1);
}
if (reserved_va) {
mmap_next_start = reserved_va;
}
}
/*
* Read in mmap_min_addr kernel parameter. This value is used
* When loading the ELF image to determine whether guest_base
* is needed. It is also used in mmap_find_vma.
*/
{
FILE *fp;
if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
unsigned long tmp;
if (fscanf(fp, "%lu", &tmp) == 1) {
mmap_min_addr = tmp;
qemu_log("host mmap_min_addr=0x%lx\n", mmap_min_addr);
}
fclose(fp);
}
}
/*
* Prepare copy of argv vector for target.
*/
target_argc = argc - optind;
target_argv = calloc(target_argc + 1, sizeof (char *));
if (target_argv == NULL) {
(void) fprintf(stderr, "Unable to allocate memory for target_argv\n");
exit(1);
}
/*
* If argv0 is specified (using '-0' switch) we replace
* argv[0] pointer with the given one.
*/
i = 0;
if (argv0 != NULL) {
target_argv[i++] = strdup(argv0);
}
for (; i < target_argc; i++) {
target_argv[i] = strdup(argv[optind + i]);
}
target_argv[target_argc] = NULL;
ts = g_malloc0 (sizeof(TaskState));
init_task_state(ts);
/* build Task State */
ts->info = info;
ts->bprm = &bprm;
cpu->opaque = ts;
task_settid(ts);
execfd = qemu_getauxval(AT_EXECFD);
if (execfd == 0) {
execfd = open(filename, O_RDONLY);
if (execfd < 0) {
printf("Error while loading %s: %s\n", filename, strerror(errno));
_exit(1);
}
}
ret = loader_exec(execfd, filename, target_argv, target_environ, regs,
info, &bprm);
if (ret != 0) {
printf("Error while loading %s: %s\n", filename, strerror(-ret));
_exit(1);
}
for (wrk = target_environ; *wrk; wrk++) {
free(*wrk);
}
free(target_environ);
if (qemu_log_enabled()) {
qemu_log("guest_base 0x%lx\n", guest_base);
log_page_dump();
qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n",
info->start_code);
qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n",
info->start_data);
qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n",
info->start_stack);
qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
}
target_set_brk(info->brk);
syscall_init();
signal_init();
/* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
generating the prologue until now so that the prologue can take
the real value of GUEST_BASE into account. */
tcg_prologue_init(&tcg_ctx);
#if defined(TARGET_I386)
env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
env->hflags |= HF_PE_MASK | HF_CPL_MASK;
if (env->features[FEAT_1_EDX] & CPUID_SSE) {
env->cr[4] |= CR4_OSFXSR_MASK;
env->hflags |= HF_OSFXSR_MASK;
}
#ifndef TARGET_ABI32
/* enable 64 bit mode if possible */
if (!(env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM)) {
fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
exit(1);
}
env->cr[4] |= CR4_PAE_MASK;
env->efer |= MSR_EFER_LMA | MSR_EFER_LME;
env->hflags |= HF_LMA_MASK;
#endif
/* flags setup : we activate the IRQs by default as in user mode */
env->eflags |= IF_MASK;
/* linux register setup */
#ifndef TARGET_ABI32
env->regs[R_EAX] = regs->rax;
env->regs[R_EBX] = regs->rbx;
env->regs[R_ECX] = regs->rcx;
env->regs[R_EDX] = regs->rdx;
env->regs[R_ESI] = regs->rsi;
env->regs[R_EDI] = regs->rdi;
env->regs[R_EBP] = regs->rbp;
env->regs[R_ESP] = regs->rsp;
env->eip = regs->rip;
#else
env->regs[R_EAX] = regs->eax;
env->regs[R_EBX] = regs->ebx;
env->regs[R_ECX] = regs->ecx;
env->regs[R_EDX] = regs->edx;
env->regs[R_ESI] = regs->esi;
env->regs[R_EDI] = regs->edi;
env->regs[R_EBP] = regs->ebp;
env->regs[R_ESP] = regs->esp;
env->eip = regs->eip;
#endif
/* linux interrupt setup */
#ifndef TARGET_ABI32
env->idt.limit = 511;
#else
env->idt.limit = 255;
#endif
env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
PROT_READ|PROT_WRITE,
MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
idt_table = g2h(env->idt.base);
set_idt(0, 0);
set_idt(1, 0);
set_idt(2, 0);
set_idt(3, 3);
set_idt(4, 3);
set_idt(5, 0);
set_idt(6, 0);
set_idt(7, 0);
set_idt(8, 0);
set_idt(9, 0);
set_idt(10, 0);
set_idt(11, 0);
set_idt(12, 0);
set_idt(13, 0);
set_idt(14, 0);
set_idt(15, 0);
set_idt(16, 0);
set_idt(17, 0);
set_idt(18, 0);
set_idt(19, 0);
set_idt(0x80, 3);
/* linux segment setup */
{
uint64_t *gdt_table;
env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
PROT_READ|PROT_WRITE,
MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
gdt_table = g2h(env->gdt.base);
#ifdef TARGET_ABI32
write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
#else
/* 64 bit code segment */
write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
DESC_L_MASK |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
#endif
write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
(3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
}
cpu_x86_load_seg(env, R_CS, __USER_CS);
cpu_x86_load_seg(env, R_SS, __USER_DS);
#ifdef TARGET_ABI32
cpu_x86_load_seg(env, R_DS, __USER_DS);
cpu_x86_load_seg(env, R_ES, __USER_DS);
cpu_x86_load_seg(env, R_FS, __USER_DS);
cpu_x86_load_seg(env, R_GS, __USER_DS);
/* This hack makes Wine work... */
env->segs[R_FS].selector = 0;
#else
cpu_x86_load_seg(env, R_DS, 0);
cpu_x86_load_seg(env, R_ES, 0);
cpu_x86_load_seg(env, R_FS, 0);
cpu_x86_load_seg(env, R_GS, 0);
#endif
#elif defined(TARGET_AARCH64)
{
int i;
if (!(arm_feature(env, ARM_FEATURE_AARCH64))) {
fprintf(stderr,
"The selected ARM CPU does not support 64 bit mode\n");
exit(1);
}
for (i = 0; i < 31; i++) {
env->xregs[i] = regs->regs[i];
}
env->pc = regs->pc;
env->xregs[31] = regs->sp;
}
#elif defined(TARGET_ARM)
{
int i;
cpsr_write(env, regs->uregs[16], 0xffffffff);
for(i = 0; i < 16; i++) {
env->regs[i] = regs->uregs[i];
}
/* Enable BE8. */
if (EF_ARM_EABI_VERSION(info->elf_flags) >= EF_ARM_EABI_VER4
&& (info->elf_flags & EF_ARM_BE8)) {
env->bswap_code = 1;
}
}
#elif defined(TARGET_UNICORE32)
{
int i;
cpu_asr_write(env, regs->uregs[32], 0xffffffff);
for (i = 0; i < 32; i++) {
env->regs[i] = regs->uregs[i];
}
}
#elif defined(TARGET_SPARC)
{
int i;
env->pc = regs->pc;
env->npc = regs->npc;
env->y = regs->y;
for(i = 0; i < 8; i++)
env->gregs[i] = regs->u_regs[i];
for(i = 0; i < 8; i++)
env->regwptr[i] = regs->u_regs[i + 8];
}
#elif defined(TARGET_PPC)
{
int i;
#if defined(TARGET_PPC64)
#if defined(TARGET_ABI32)
env->msr &= ~((target_ulong)1 << MSR_SF);
#else
env->msr |= (target_ulong)1 << MSR_SF;
#endif
#endif
env->nip = regs->nip;
for(i = 0; i < 32; i++) {
env->gpr[i] = regs->gpr[i];
}
}
#elif defined(TARGET_M68K)
{
env->pc = regs->pc;
env->dregs[0] = regs->d0;
env->dregs[1] = regs->d1;
env->dregs[2] = regs->d2;
env->dregs[3] = regs->d3;
env->dregs[4] = regs->d4;
env->dregs[5] = regs->d5;
env->dregs[6] = regs->d6;
env->dregs[7] = regs->d7;
env->aregs[0] = regs->a0;
env->aregs[1] = regs->a1;
env->aregs[2] = regs->a2;
env->aregs[3] = regs->a3;
env->aregs[4] = regs->a4;
env->aregs[5] = regs->a5;
env->aregs[6] = regs->a6;
env->aregs[7] = regs->usp;
env->sr = regs->sr;
ts->sim_syscalls = 1;
}
#elif defined(TARGET_MICROBLAZE)
{
env->regs[0] = regs->r0;
env->regs[1] = regs->r1;
env->regs[2] = regs->r2;
env->regs[3] = regs->r3;
env->regs[4] = regs->r4;
env->regs[5] = regs->r5;
env->regs[6] = regs->r6;
env->regs[7] = regs->r7;
env->regs[8] = regs->r8;
env->regs[9] = regs->r9;
env->regs[10] = regs->r10;
env->regs[11] = regs->r11;
env->regs[12] = regs->r12;
env->regs[13] = regs->r13;
env->regs[14] = regs->r14;
env->regs[15] = regs->r15;
env->regs[16] = regs->r16;
env->regs[17] = regs->r17;
env->regs[18] = regs->r18;
env->regs[19] = regs->r19;
env->regs[20] = regs->r20;
env->regs[21] = regs->r21;
env->regs[22] = regs->r22;
env->regs[23] = regs->r23;
env->regs[24] = regs->r24;
env->regs[25] = regs->r25;
env->regs[26] = regs->r26;
env->regs[27] = regs->r27;
env->regs[28] = regs->r28;
env->regs[29] = regs->r29;
env->regs[30] = regs->r30;
env->regs[31] = regs->r31;
env->sregs[SR_PC] = regs->pc;
}
#elif defined(TARGET_MIPS)
{
int i;
for(i = 0; i < 32; i++) {
env->active_tc.gpr[i] = regs->regs[i];
}
env->active_tc.PC = regs->cp0_epc & ~(target_ulong)1;
if (regs->cp0_epc & 1) {
env->hflags |= MIPS_HFLAG_M16;
}
}
#elif defined(TARGET_OPENRISC)
{
int i;
for (i = 0; i < 32; i++) {
env->gpr[i] = regs->gpr[i];
}
env->sr = regs->sr;
env->pc = regs->pc;
}
#elif defined(TARGET_SH4)
{
int i;
for(i = 0; i < 16; i++) {
env->gregs[i] = regs->regs[i];
}
env->pc = regs->pc;
}
#elif defined(TARGET_ALPHA)
{
int i;
for(i = 0; i < 28; i++) {
env->ir[i] = ((abi_ulong *)regs)[i];
}
env->ir[IR_SP] = regs->usp;
env->pc = regs->pc;
}
#elif defined(TARGET_CRIS)
{
env->regs[0] = regs->r0;
env->regs[1] = regs->r1;
env->regs[2] = regs->r2;
env->regs[3] = regs->r3;
env->regs[4] = regs->r4;
env->regs[5] = regs->r5;
env->regs[6] = regs->r6;
env->regs[7] = regs->r7;
env->regs[8] = regs->r8;
env->regs[9] = regs->r9;
env->regs[10] = regs->r10;
env->regs[11] = regs->r11;
env->regs[12] = regs->r12;
env->regs[13] = regs->r13;
env->regs[14] = info->start_stack;
env->regs[15] = regs->acr;
env->pc = regs->erp;
}
#elif defined(TARGET_S390X)
{
int i;
for (i = 0; i < 16; i++) {
env->regs[i] = regs->gprs[i];
}
env->psw.mask = regs->psw.mask;
env->psw.addr = regs->psw.addr;
}
#elif defined(TARGET_TILEGX)
{
int i;
for (i = 0; i < TILEGX_R_COUNT; i++) {
env->regs[i] = regs->regs[i];
}
for (i = 0; i < TILEGX_SPR_COUNT; i++) {
env->spregs[i] = 0;
}
env->pc = regs->pc;
}
#else
#error unsupported target CPU
#endif
#if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
ts->stack_base = info->start_stack;
ts->heap_base = info->brk;
/* This will be filled in on the first SYS_HEAPINFO call. */
ts->heap_limit = 0;
#endif
if (gdbstub_port) {
if (gdbserver_start(gdbstub_port) < 0) {
fprintf(stderr, "qemu: could not open gdbserver on port %d\n",
gdbstub_port);
exit(1);
}
gdb_handlesig(cpu, 0);
}
cpu_loop(env);
/* never exits */
return 0;
}