1147 lines
35 KiB
C
1147 lines
35 KiB
C
/*
|
|
* 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 <machine/trap.h>
|
|
#include <sys/types.h>
|
|
#include <sys/mman.h>
|
|
|
|
#include "qemu.h"
|
|
#include "qemu-common.h"
|
|
/* For tb_lock */
|
|
#include "cpu.h"
|
|
#include "tcg.h"
|
|
#include "qemu-timer.h"
|
|
#include "envlist.h"
|
|
|
|
#define DEBUG_LOGFILE "/tmp/qemu.log"
|
|
|
|
int singlestep;
|
|
#if defined(CONFIG_USE_GUEST_BASE)
|
|
unsigned long mmap_min_addr;
|
|
unsigned long guest_base;
|
|
int have_guest_base;
|
|
#endif
|
|
|
|
static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
|
|
const char *qemu_uname_release = CONFIG_UNAME_RELEASE;
|
|
extern char **environ;
|
|
enum BSDType bsd_type;
|
|
|
|
/* 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 x86_stack_size = 512 * 1024;
|
|
|
|
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
|
|
|
|
/* These are no-ops because we are not threadsafe. */
|
|
static inline void cpu_exec_start(CPUState *env)
|
|
{
|
|
}
|
|
|
|
static inline void cpu_exec_end(CPUState *env)
|
|
{
|
|
}
|
|
|
|
static inline void start_exclusive(void)
|
|
{
|
|
}
|
|
|
|
static inline void end_exclusive(void)
|
|
{
|
|
}
|
|
|
|
void fork_start(void)
|
|
{
|
|
}
|
|
|
|
void fork_end(int child)
|
|
{
|
|
if (child) {
|
|
gdbserver_fork(thread_env);
|
|
}
|
|
}
|
|
|
|
void cpu_list_lock(void)
|
|
{
|
|
}
|
|
|
|
void cpu_list_unlock(void)
|
|
{
|
|
}
|
|
|
|
#ifdef TARGET_I386
|
|
/***********************************************************/
|
|
/* CPUX86 core interface */
|
|
|
|
void cpu_smm_update(CPUX86State *env)
|
|
{
|
|
}
|
|
|
|
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)
|
|
{
|
|
int trapnr;
|
|
abi_ulong pc;
|
|
//target_siginfo_t info;
|
|
|
|
for(;;) {
|
|
trapnr = cpu_x86_exec(env);
|
|
switch(trapnr) {
|
|
case 0x80:
|
|
/* syscall from int $0x80 */
|
|
if (bsd_type == target_freebsd) {
|
|
abi_ulong params = (abi_ulong) env->regs[R_ESP] +
|
|
sizeof(int32_t);
|
|
int32_t syscall_nr = env->regs[R_EAX];
|
|
int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8;
|
|
|
|
if (syscall_nr == TARGET_FREEBSD_NR_syscall) {
|
|
get_user_s32(syscall_nr, params);
|
|
params += sizeof(int32_t);
|
|
} else if (syscall_nr == TARGET_FREEBSD_NR___syscall) {
|
|
get_user_s32(syscall_nr, params);
|
|
params += sizeof(int64_t);
|
|
}
|
|
get_user_s32(arg1, params);
|
|
params += sizeof(int32_t);
|
|
get_user_s32(arg2, params);
|
|
params += sizeof(int32_t);
|
|
get_user_s32(arg3, params);
|
|
params += sizeof(int32_t);
|
|
get_user_s32(arg4, params);
|
|
params += sizeof(int32_t);
|
|
get_user_s32(arg5, params);
|
|
params += sizeof(int32_t);
|
|
get_user_s32(arg6, params);
|
|
params += sizeof(int32_t);
|
|
get_user_s32(arg7, params);
|
|
params += sizeof(int32_t);
|
|
get_user_s32(arg8, params);
|
|
env->regs[R_EAX] = do_freebsd_syscall(env,
|
|
syscall_nr,
|
|
arg1,
|
|
arg2,
|
|
arg3,
|
|
arg4,
|
|
arg5,
|
|
arg6,
|
|
arg7,
|
|
arg8);
|
|
} else { //if (bsd_type == target_openbsd)
|
|
env->regs[R_EAX] = do_openbsd_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]);
|
|
}
|
|
if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
|
|
env->regs[R_EAX] = -env->regs[R_EAX];
|
|
env->eflags |= CC_C;
|
|
} else {
|
|
env->eflags &= ~CC_C;
|
|
}
|
|
break;
|
|
#ifndef TARGET_ABI32
|
|
case EXCP_SYSCALL:
|
|
/* syscall from syscall instruction */
|
|
if (bsd_type == target_freebsd)
|
|
env->regs[R_EAX] = do_freebsd_syscall(env,
|
|
env->regs[R_EAX],
|
|
env->regs[R_EDI],
|
|
env->regs[R_ESI],
|
|
env->regs[R_EDX],
|
|
env->regs[R_ECX],
|
|
env->regs[8],
|
|
env->regs[9], 0, 0);
|
|
else { //if (bsd_type == target_openbsd)
|
|
env->regs[R_EAX] = do_openbsd_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]);
|
|
}
|
|
env->eip = env->exception_next_eip;
|
|
if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
|
|
env->regs[R_EAX] = -env->regs[R_EAX];
|
|
env->eflags |= CC_C;
|
|
} else {
|
|
env->eflags &= ~CC_C;
|
|
}
|
|
break;
|
|
#endif
|
|
#if 0
|
|
case EXCP0B_NOSEG:
|
|
case EXCP0C_STACK:
|
|
info.si_signo = 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 = 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 = 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 = 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 = 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 = 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 = 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;
|
|
#endif
|
|
case EXCP_INTERRUPT:
|
|
/* just indicate that signals should be handled asap */
|
|
break;
|
|
#if 0
|
|
case EXCP_DEBUG:
|
|
{
|
|
int sig;
|
|
|
|
sig = gdb_handlesig (env, 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;
|
|
#endif
|
|
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_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)
|
|
{
|
|
int trapnr, ret, syscall_nr;
|
|
//target_siginfo_t info;
|
|
|
|
while (1) {
|
|
trapnr = cpu_sparc_exec (env);
|
|
|
|
switch (trapnr) {
|
|
#ifndef TARGET_SPARC64
|
|
case 0x80:
|
|
#else
|
|
/* FreeBSD uses 0x141 for syscalls too */
|
|
case 0x141:
|
|
if (bsd_type != target_freebsd)
|
|
goto badtrap;
|
|
case 0x100:
|
|
#endif
|
|
syscall_nr = env->gregs[1];
|
|
if (bsd_type == target_freebsd)
|
|
ret = do_freebsd_syscall(env, syscall_nr,
|
|
env->regwptr[0], env->regwptr[1],
|
|
env->regwptr[2], env->regwptr[3],
|
|
env->regwptr[4], env->regwptr[5], 0, 0);
|
|
else if (bsd_type == target_netbsd)
|
|
ret = do_netbsd_syscall(env, syscall_nr,
|
|
env->regwptr[0], env->regwptr[1],
|
|
env->regwptr[2], env->regwptr[3],
|
|
env->regwptr[4], env->regwptr[5]);
|
|
else { //if (bsd_type == target_openbsd)
|
|
#if defined(TARGET_SPARC64)
|
|
syscall_nr &= ~(TARGET_OPENBSD_SYSCALL_G7RFLAG |
|
|
TARGET_OPENBSD_SYSCALL_G2RFLAG);
|
|
#endif
|
|
ret = do_openbsd_syscall(env, syscall_nr,
|
|
env->regwptr[0], env->regwptr[1],
|
|
env->regwptr[2], env->regwptr[3],
|
|
env->regwptr[4], env->regwptr[5]);
|
|
}
|
|
if ((unsigned int)ret >= (unsigned int)(-515)) {
|
|
ret = -ret;
|
|
#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
|
|
env->xcc |= PSR_CARRY;
|
|
#else
|
|
env->psr |= PSR_CARRY;
|
|
#endif
|
|
} else {
|
|
#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
|
|
env->xcc &= ~PSR_CARRY;
|
|
#else
|
|
env->psr &= ~PSR_CARRY;
|
|
#endif
|
|
}
|
|
env->regwptr[0] = ret;
|
|
/* next instruction */
|
|
#if defined(TARGET_SPARC64)
|
|
if (bsd_type == target_openbsd &&
|
|
env->gregs[1] & TARGET_OPENBSD_SYSCALL_G2RFLAG) {
|
|
env->pc = env->gregs[2];
|
|
env->npc = env->pc + 4;
|
|
} else if (bsd_type == target_openbsd &&
|
|
env->gregs[1] & TARGET_OPENBSD_SYSCALL_G7RFLAG) {
|
|
env->pc = env->gregs[7];
|
|
env->npc = env->pc + 4;
|
|
} else {
|
|
env->pc = env->npc;
|
|
env->npc = env->npc + 4;
|
|
}
|
|
#else
|
|
env->pc = env->npc;
|
|
env->npc = env->npc + 4;
|
|
#endif
|
|
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:
|
|
#if 0
|
|
{
|
|
info.si_signo = 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);
|
|
}
|
|
#endif
|
|
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:
|
|
#if 0
|
|
{
|
|
info.si_signo = 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 = env->tsptr->tpc;
|
|
//queue_signal(env, info.si_signo, &info);
|
|
}
|
|
#endif
|
|
break;
|
|
#endif
|
|
case EXCP_INTERRUPT:
|
|
/* just indicate that signals should be handled asap */
|
|
break;
|
|
case EXCP_DEBUG:
|
|
{
|
|
int sig;
|
|
|
|
sig = gdb_handlesig (env, TARGET_SIGTRAP);
|
|
#if 0
|
|
if (sig)
|
|
{
|
|
info.si_signo = sig;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_TRAP_BRKPT;
|
|
//queue_signal(env, info.si_signo, &info);
|
|
}
|
|
#endif
|
|
}
|
|
break;
|
|
default:
|
|
#ifdef TARGET_SPARC64
|
|
badtrap:
|
|
#endif
|
|
printf ("Unhandled trap: 0x%x\n", trapnr);
|
|
cpu_dump_state(env, stderr, fprintf, 0);
|
|
exit (1);
|
|
}
|
|
process_pending_signals (env);
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
static void usage(void)
|
|
{
|
|
printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n"
|
|
"usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n"
|
|
"BSD CPU emulator (compiled for %s emulation)\n"
|
|
"\n"
|
|
"Standard options:\n"
|
|
"-h print this help\n"
|
|
"-g port wait gdb connection to port\n"
|
|
"-L path set the elf interpreter prefix (default=%s)\n"
|
|
"-s size set the stack size in bytes (default=%ld)\n"
|
|
"-cpu model select CPU (-cpu ? for list)\n"
|
|
"-drop-ld-preload drop LD_PRELOAD for target process\n"
|
|
"-E var=value sets/modifies targets environment variable(s)\n"
|
|
"-U var unsets targets environment variable(s)\n"
|
|
#if defined(CONFIG_USE_GUEST_BASE)
|
|
"-B address set guest_base address to address\n"
|
|
#endif
|
|
"-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n"
|
|
"\n"
|
|
"Debug options:\n"
|
|
"-d options activate log (default logfile=%s)\n"
|
|
"-D logfile override default logfile location\n"
|
|
"-p pagesize set the host page size to 'pagesize'\n"
|
|
"-singlestep always run in singlestep mode\n"
|
|
"-strace log system calls\n"
|
|
"\n"
|
|
"Environment variables:\n"
|
|
"QEMU_STRACE Print system calls and arguments similar to the\n"
|
|
" 'strace' program. Enable by setting to any value.\n"
|
|
"You can use -E and -U options to set/unset environment variables\n"
|
|
"for target process. It is possible to provide several variables\n"
|
|
"by repeating the option. For example:\n"
|
|
" -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
|
|
"Note that if you provide several changes to single variable\n"
|
|
"last change will stay in effect.\n"
|
|
,
|
|
TARGET_ARCH,
|
|
interp_prefix,
|
|
x86_stack_size,
|
|
DEBUG_LOGFILE);
|
|
exit(1);
|
|
}
|
|
|
|
THREAD CPUState *thread_env;
|
|
|
|
/* 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;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
const char *filename;
|
|
const char *cpu_model;
|
|
const char *log_file = DEBUG_LOGFILE;
|
|
const char *log_mask = NULL;
|
|
struct target_pt_regs regs1, *regs = ®s1;
|
|
struct image_info info1, *info = &info1;
|
|
TaskState ts1, *ts = &ts1;
|
|
CPUState *env;
|
|
int optind;
|
|
const char *r;
|
|
int gdbstub_port = 0;
|
|
char **target_environ, **wrk;
|
|
envlist_t *envlist = NULL;
|
|
bsd_type = target_openbsd;
|
|
|
|
if (argc <= 1)
|
|
usage();
|
|
|
|
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);
|
|
}
|
|
|
|
cpu_model = NULL;
|
|
#if defined(cpudef_setup)
|
|
cpudef_setup(); /* parse cpu definitions in target config file (TBD) */
|
|
#endif
|
|
|
|
optind = 1;
|
|
for(;;) {
|
|
if (optind >= argc)
|
|
break;
|
|
r = argv[optind];
|
|
if (r[0] != '-')
|
|
break;
|
|
optind++;
|
|
r++;
|
|
if (!strcmp(r, "-")) {
|
|
break;
|
|
} else if (!strcmp(r, "d")) {
|
|
if (optind >= argc) {
|
|
break;
|
|
}
|
|
log_mask = argv[optind++];
|
|
} else if (!strcmp(r, "D")) {
|
|
if (optind >= argc) {
|
|
break;
|
|
}
|
|
log_file = argv[optind++];
|
|
} else if (!strcmp(r, "E")) {
|
|
r = argv[optind++];
|
|
if (envlist_setenv(envlist, r) != 0)
|
|
usage();
|
|
} else if (!strcmp(r, "ignore-environment")) {
|
|
envlist_free(envlist);
|
|
if ((envlist = envlist_create()) == NULL) {
|
|
(void) fprintf(stderr, "Unable to allocate envlist\n");
|
|
exit(1);
|
|
}
|
|
} else if (!strcmp(r, "U")) {
|
|
r = argv[optind++];
|
|
if (envlist_unsetenv(envlist, r) != 0)
|
|
usage();
|
|
} else if (!strcmp(r, "s")) {
|
|
r = argv[optind++];
|
|
x86_stack_size = strtol(r, (char **)&r, 0);
|
|
if (x86_stack_size <= 0)
|
|
usage();
|
|
if (*r == 'M')
|
|
x86_stack_size *= 1024 * 1024;
|
|
else if (*r == 'k' || *r == 'K')
|
|
x86_stack_size *= 1024;
|
|
} else if (!strcmp(r, "L")) {
|
|
interp_prefix = argv[optind++];
|
|
} else if (!strcmp(r, "p")) {
|
|
qemu_host_page_size = atoi(argv[optind++]);
|
|
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);
|
|
}
|
|
} else if (!strcmp(r, "g")) {
|
|
gdbstub_port = atoi(argv[optind++]);
|
|
} else if (!strcmp(r, "r")) {
|
|
qemu_uname_release = argv[optind++];
|
|
} else if (!strcmp(r, "cpu")) {
|
|
cpu_model = argv[optind++];
|
|
if (strcmp(cpu_model, "?") == 0) {
|
|
/* XXX: implement xxx_cpu_list for targets that still miss it */
|
|
#if defined(cpu_list)
|
|
cpu_list(stdout, &fprintf);
|
|
#endif
|
|
exit(1);
|
|
}
|
|
#if defined(CONFIG_USE_GUEST_BASE)
|
|
} else if (!strcmp(r, "B")) {
|
|
guest_base = strtol(argv[optind++], NULL, 0);
|
|
have_guest_base = 1;
|
|
#endif
|
|
} else if (!strcmp(r, "drop-ld-preload")) {
|
|
(void) envlist_unsetenv(envlist, "LD_PRELOAD");
|
|
} else if (!strcmp(r, "bsd")) {
|
|
if (!strcasecmp(argv[optind], "freebsd")) {
|
|
bsd_type = target_freebsd;
|
|
} else if (!strcasecmp(argv[optind], "netbsd")) {
|
|
bsd_type = target_netbsd;
|
|
} else if (!strcasecmp(argv[optind], "openbsd")) {
|
|
bsd_type = target_openbsd;
|
|
} else {
|
|
usage();
|
|
}
|
|
optind++;
|
|
} else if (!strcmp(r, "singlestep")) {
|
|
singlestep = 1;
|
|
} else if (!strcmp(r, "strace")) {
|
|
do_strace = 1;
|
|
} else
|
|
{
|
|
usage();
|
|
}
|
|
}
|
|
|
|
/* init debug */
|
|
cpu_set_log_filename(log_file);
|
|
if (log_mask) {
|
|
int mask;
|
|
const CPULogItem *item;
|
|
|
|
mask = cpu_str_to_log_mask(log_mask);
|
|
if (!mask) {
|
|
printf("Log items (comma separated):\n");
|
|
for (item = cpu_log_items; item->mask != 0; item++) {
|
|
printf("%-10s %s\n", item->name, item->help);
|
|
}
|
|
exit(1);
|
|
}
|
|
cpu_set_log(mask);
|
|
}
|
|
|
|
if (optind >= argc) {
|
|
usage();
|
|
}
|
|
filename = argv[optind];
|
|
|
|
/* Zero out regs */
|
|
memset(regs, 0, sizeof(struct target_pt_regs));
|
|
|
|
/* Zero out image_info */
|
|
memset(info, 0, sizeof(struct image_info));
|
|
|
|
/* Scan interp_prefix dir for replacement files. */
|
|
init_paths(interp_prefix);
|
|
|
|
if (cpu_model == NULL) {
|
|
#if defined(TARGET_I386)
|
|
#ifdef TARGET_X86_64
|
|
cpu_model = "qemu64";
|
|
#else
|
|
cpu_model = "qemu32";
|
|
#endif
|
|
#elif defined(TARGET_SPARC)
|
|
#ifdef TARGET_SPARC64
|
|
cpu_model = "TI UltraSparc II";
|
|
#else
|
|
cpu_model = "Fujitsu MB86904";
|
|
#endif
|
|
#else
|
|
cpu_model = "any";
|
|
#endif
|
|
}
|
|
tcg_exec_init(0);
|
|
cpu_exec_init_all();
|
|
/* NOTE: we need to init the CPU at this stage to get
|
|
qemu_host_page_size */
|
|
env = cpu_init(cpu_model);
|
|
if (!env) {
|
|
fprintf(stderr, "Unable to find CPU definition\n");
|
|
exit(1);
|
|
}
|
|
#if defined(TARGET_I386) || defined(TARGET_SPARC) || defined(TARGET_PPC)
|
|
cpu_state_reset(env);
|
|
#endif
|
|
thread_env = env;
|
|
|
|
if (getenv("QEMU_STRACE")) {
|
|
do_strace = 1;
|
|
}
|
|
|
|
target_environ = envlist_to_environ(envlist, NULL);
|
|
envlist_free(envlist);
|
|
|
|
#if defined(CONFIG_USE_GUEST_BASE)
|
|
/*
|
|
* 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);
|
|
|
|
/*
|
|
* Read in mmap_min_addr kernel parameter. This value is used
|
|
* When loading the ELF image to determine whether guest_base
|
|
* is needed.
|
|
*
|
|
* When user has explicitly set the quest base, we skip this
|
|
* test.
|
|
*/
|
|
if (!have_guest_base) {
|
|
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);
|
|
}
|
|
}
|
|
#endif /* CONFIG_USE_GUEST_BASE */
|
|
|
|
if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) {
|
|
printf("Error loading %s\n", filename);
|
|
_exit(1);
|
|
}
|
|
|
|
for (wrk = target_environ; *wrk; wrk++) {
|
|
free(*wrk);
|
|
}
|
|
|
|
free(target_environ);
|
|
|
|
if (qemu_log_enabled()) {
|
|
#if defined(CONFIG_USE_GUEST_BASE)
|
|
qemu_log("guest_base 0x%lx\n", guest_base);
|
|
#endif
|
|
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();
|
|
|
|
#if defined(CONFIG_USE_GUEST_BASE)
|
|
/* 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);
|
|
#endif
|
|
|
|
/* build Task State */
|
|
memset(ts, 0, sizeof(TaskState));
|
|
init_task_state(ts);
|
|
ts->info = info;
|
|
env->opaque = ts;
|
|
|
|
#if defined(TARGET_I386)
|
|
cpu_x86_set_cpl(env, 3);
|
|
|
|
env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
|
|
env->hflags |= HF_PE_MASK;
|
|
if (env->cpuid_features & CPUID_SSE) {
|
|
env->cr[4] |= CR4_OSFXSR_MASK;
|
|
env->hflags |= HF_OSFXSR_MASK;
|
|
}
|
|
#ifndef TARGET_ABI32
|
|
/* enable 64 bit mode if possible */
|
|
if (!(env->cpuid_ext2_features & 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_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];
|
|
}
|
|
#else
|
|
#error unsupported target CPU
|
|
#endif
|
|
|
|
if (gdbstub_port) {
|
|
gdbserver_start (gdbstub_port);
|
|
gdb_handlesig(env, 0);
|
|
}
|
|
cpu_loop(env);
|
|
/* never exits */
|
|
return 0;
|
|
}
|