mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add moxie target code

Browse Source 
Signed-off-by: Anthony Green <green@moxielogic.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Anthony Green 2013-03-18 15:49:22 -04:00 committed by Blue Swirl
parent f7c61bf8fc
commit 525bd324c2
10 changed files with 1531 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
target-moxie/Makefile.objs Normal file
View File

@ -0,0 +1,2 @@
obj-y += translate.o helper.o machine.o cpu.o machine.o
obj-$(CONFIG_SOFTMMU) += mmu.o

172
target-moxie/cpu.c Normal file
View File

@ -0,0 +1,172 @@
/*
* QEMU Moxie CPU
*
* Copyright (c) 2013 Anthony Green
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser 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 "cpu.h"
#include "qemu-common.h"
#include "migration/vmstate.h"
#include "machine.h"
static void moxie_cpu_reset(CPUState *s)
{
MoxieCPU *cpu = MOXIE_CPU(s);
MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(cpu);
CPUMoxieState *env = &cpu->env;
if (qemu_loglevel_mask(CPU_LOG_RESET)) {
qemu_log("CPU Reset (CPU %d)\n", s->cpu_index);
log_cpu_state(env, 0);
}
mcc->parent_reset(s);
memset(env, 0, offsetof(CPUMoxieState, breakpoints));
env->pc = 0x1000;
tlb_flush(env, 1);
}
static void moxie_cpu_realizefn(DeviceState *dev, Error **errp)
{
MoxieCPU *cpu = MOXIE_CPU(dev);
MoxieCPUClass *occ = MOXIE_CPU_GET_CLASS(dev);
qemu_init_vcpu(&cpu->env);
cpu_reset(CPU(cpu));
occ->parent_realize(dev, errp);
}
static void moxie_cpu_initfn(Object *obj)
{
CPUState *cs = CPU(obj);
MoxieCPU *cpu = MOXIE_CPU(obj);
static int inited;
cs->env_ptr = &cpu->env;
cpu_exec_init(&cpu->env);
if (tcg_enabled() && !inited) {
inited = 1;
moxie_translate_init();
}
}
static ObjectClass *moxie_cpu_class_by_name(const char *cpu_model)
{
ObjectClass *oc;
if (cpu_model == NULL) {
return NULL;
}
oc = object_class_by_name(cpu_model);
if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_MOXIE_CPU) ||
object_class_is_abstract(oc))) {
return NULL;
}
return oc;
}
static void moxie_cpu_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
CPUClass *cc = CPU_CLASS(oc);
MoxieCPUClass *mcc = MOXIE_CPU_CLASS(oc);
mcc->parent_realize = dc->realize;
dc->realize = moxie_cpu_realizefn;
mcc->parent_reset = cc->reset;
cc->reset = moxie_cpu_reset;
cc->class_by_name = moxie_cpu_class_by_name;
dc->vmsd = &vmstate_moxie_cpu;
}
static void moxielite_initfn(Object *obj)
{
/* Set cpu feature flags */
}
static void moxie_any_initfn(Object *obj)
{
/* Set cpu feature flags */
}
typedef struct MoxieCPUInfo {
const char *name;
void (*initfn)(Object *obj);
} MoxieCPUInfo;
static const MoxieCPUInfo moxie_cpus[] = {
{ .name = "MoxieLite", .initfn = moxielite_initfn },
{ .name = "any", .initfn = moxie_any_initfn },
};
MoxieCPU *cpu_moxie_init(const char *cpu_model)
{
MoxieCPU *cpu;
ObjectClass *oc;
oc = moxie_cpu_class_by_name(cpu_model);
if (oc == NULL) {
return NULL;
}
cpu = MOXIE_CPU(object_new(object_class_get_name(oc)));
cpu->env.cpu_model_str = cpu_model;
object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
return cpu;
}
static void cpu_register(const MoxieCPUInfo *info)
{
TypeInfo type_info = {
.parent = TYPE_MOXIE_CPU,
.instance_size = sizeof(MoxieCPU),
.instance_init = info->initfn,
.class_size = sizeof(MoxieCPUClass),
};
type_info.name = g_strdup_printf("%s-" TYPE_MOXIE_CPU, info->name);
type_register(&type_info);
g_free((void *)type_info.name);
}
static const TypeInfo moxie_cpu_type_info = {
.name = TYPE_MOXIE_CPU,
.parent = TYPE_CPU,
.instance_size = sizeof(MoxieCPU),
.instance_init = moxie_cpu_initfn,
.class_size = sizeof(MoxieCPUClass),
.class_init = moxie_cpu_class_init,
};
static void moxie_cpu_register_types(void)
{
int i;
type_register_static(&moxie_cpu_type_info);
for (i = 0; i < ARRAY_SIZE(moxie_cpus); i++) {
cpu_register(&moxie_cpus[i]);
}
}
type_init(moxie_cpu_register_types)

167
target-moxie/cpu.h Normal file
View File

@ -0,0 +1,167 @@
/*
* Moxie emulation
*
* Copyright (c) 2008, 2010, 2013 Anthony Green
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser 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/>.
*/
#ifndef _CPU_MOXIE_H
#define _CPU_MOXIE_H
#include "config.h"
#include "qemu-common.h"
#define TARGET_LONG_BITS 32
#define CPUArchState struct CPUMoxieState
#define TARGET_HAS_ICE 1
#define CPU_SAVE_VERSION 1
#define ELF_MACHINE 0xFEED /* EM_MOXIE */
#define MOXIE_EX_DIV0 0
#define MOXIE_EX_BAD 1
#define MOXIE_EX_IRQ 2
#define MOXIE_EX_SWI 3
#define MOXIE_EX_MMU_MISS 4
#define MOXIE_EX_BREAK 16
#include "exec/cpu-defs.h"
#include "fpu/softfloat.h"
#define TARGET_PAGE_BITS 12 /* 4k */
#define TARGET_PHYS_ADDR_SPACE_BITS 32
#define TARGET_VIRT_ADDR_SPACE_BITS 32
#define NB_MMU_MODES 1
typedef struct CPUMoxieState {
uint32_t flags; /* general execution flags */
uint32_t gregs[16]; /* general registers */
uint32_t sregs[256]; /* special registers */
uint32_t pc; /* program counter */
/* Instead of saving the cc value, we save the cmp arguments
and compute cc on demand. */
uint32_t cc_a; /* reg a for condition code calculation */
uint32_t cc_b; /* reg b for condition code calculation */
void *irq[8];
CPU_COMMON
} CPUMoxieState;
#include "qom/cpu.h"
#define TYPE_MOXIE_CPU "moxie-cpu"
#define MOXIE_CPU_CLASS(klass) \
OBJECT_CLASS_CHECK(MoxieCPUClass, (klass), TYPE_MOXIE_CPU)
#define MOXIE_CPU(obj) \
OBJECT_CHECK(MoxieCPU, (obj), TYPE_MOXIE_CPU)
#define MOXIE_CPU_GET_CLASS(obj) \
OBJECT_GET_CLASS(MoxieCPUClass, (obj), TYPE_MOXIE_CPU)
/**
* MoxieCPUClass:
* @parent_reset: The parent class' reset handler.
*
* A Moxie CPU model.
*/
typedef struct MoxieCPUClass {
/*< private >*/
CPUClass parent_class;
/*< public >*/
DeviceRealize parent_realize;
void (*parent_reset)(CPUState *cpu);
} MoxieCPUClass;
/**
* MoxieCPU:
* @env: #CPUMoxieState
*
* A Moxie CPU.
*/
typedef struct MoxieCPU {
/*< private >*/
CPUState parent_obj;
/*< public >*/
CPUMoxieState env;
} MoxieCPU;
static inline MoxieCPU *moxie_env_get_cpu(CPUMoxieState *env)
{
return MOXIE_CPU(container_of(env, MoxieCPU, env));
}
#define ENV_GET_CPU(e) CPU(moxie_env_get_cpu(e))
#define ENV_OFFSET offsetof(MoxieCPU, env)
MoxieCPU *cpu_moxie_init(const char *cpu_model);
int cpu_moxie_exec(CPUMoxieState *s);
void do_interrupt(CPUMoxieState *env);
void moxie_translate_init(void);
int cpu_moxie_signal_handler(int host_signum, void *pinfo,
void *puc);
static inline CPUMoxieState *cpu_init(const char *cpu_model)
{
MoxieCPU *cpu = cpu_moxie_init(cpu_model);
if (cpu == NULL) {
return NULL;
}
return &cpu->env;
}
#define cpu_exec cpu_moxie_exec
#define cpu_gen_code cpu_moxie_gen_code
#define cpu_signal_handler cpu_moxie_signal_handler
static inline int cpu_mmu_index(CPUMoxieState *env)
{
return 0;
}
#include "exec/cpu-all.h"
#include "exec/exec-all.h"
static inline void cpu_pc_from_tb(CPUMoxieState *env, TranslationBlock *tb)
{
env->pc = tb->pc;
}
static inline void cpu_get_tb_cpu_state(CPUMoxieState *env, target_ulong *pc,
target_ulong *cs_base, int *flags)
{
*pc = env->pc;
*cs_base = 0;
*flags = 0;
}
static inline int cpu_has_work(CPUState *cpu)
{
return cpu->interrupt_request & CPU_INTERRUPT_HARD;
}
int cpu_moxie_handle_mmu_fault(CPUMoxieState *env, target_ulong address,
int rw, int mmu_idx);
#endif /* _CPU_MOXIE_H */

171
target-moxie/helper.c Normal file
View File

@ -0,0 +1,171 @@
/*
* Moxie helper routines.
*
* Copyright (c) 2008, 2009, 2010, 2013 Anthony Green
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser 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 <stdio.h>
#include <string.h>
#include <assert.h>
#include "config.h"
#include "cpu.h"
#include "mmu.h"
#include "exec/exec-all.h"
#include "qemu/host-utils.h"
#include "helper.h"
#define MMUSUFFIX _mmu
#define SHIFT 0
#include "exec/softmmu_template.h"
#define SHIFT 1
#include "exec/softmmu_template.h"
#define SHIFT 2
#include "exec/softmmu_template.h"
#define SHIFT 3
#include "exec/softmmu_template.h"
/* Try to fill the TLB and return an exception if error. If retaddr is
NULL, it means that the function was called in C code (i.e. not
from generated code or from helper.c) */
void tlb_fill(CPUMoxieState *env, target_ulong addr, int is_write, int mmu_idx,
uintptr_t retaddr)
{
int ret;
ret = cpu_moxie_handle_mmu_fault(env, addr, is_write, mmu_idx);
if (unlikely(ret)) {
if (retaddr) {
cpu_restore_state(env, retaddr);
}
}
cpu_loop_exit(env);
}
void helper_raise_exception(CPUMoxieState *env, int ex)
{
env->exception_index = ex;
/* Stash the exception type. */
env->sregs[2] = ex;
/* Stash the address where the exception occurred. */
cpu_restore_state(env, GETPC());
env->sregs[5] = env->pc;
/* Jump the the exception handline routine. */
env->pc = env->sregs[1];
cpu_loop_exit(env);
}
uint32_t helper_div(CPUMoxieState *env, uint32_t a, uint32_t b)
{
if (unlikely(b == 0)) {
helper_raise_exception(env, MOXIE_EX_DIV0);
return 0;
}
if (unlikely(a == INT_MIN && b == -1)) {
return INT_MIN;
}
return (int32_t)a / (int32_t)b;
}
uint32_t helper_udiv(CPUMoxieState *env, uint32_t a, uint32_t b)
{
if (unlikely(b == 0)) {
helper_raise_exception(env, MOXIE_EX_DIV0);
return 0;
}
return a / b;
}
void helper_debug(CPUMoxieState *env)
{
env->exception_index = EXCP_DEBUG;
cpu_loop_exit(env);
}
#if defined(CONFIG_USER_ONLY)
void do_interrupt(CPUState *env)
{
env->exception_index = -1;
}
int cpu_moxie_handle_mmu_fault(CPUMoxieState *env, target_ulong address,
int rw, int mmu_idx)
{
env->exception_index = 0xaa;
env->debug1 = address;
cpu_dump_state(env, stderr, fprintf, 0);
return 1;
}
target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr)
{
return addr;
}
#else /* !CONFIG_USER_ONLY */
int cpu_moxie_handle_mmu_fault(CPUMoxieState *env, target_ulong address,
int rw, int mmu_idx)
{
MoxieMMUResult res;
int prot, miss;
target_ulong phy;
int r = 1;
address &= TARGET_PAGE_MASK;
prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
miss = moxie_mmu_translate(&res, env, address, rw, mmu_idx);
if (miss) {
/* handle the miss. */
phy = 0;
env->exception_index = MOXIE_EX_MMU_MISS;
} else {
phy = res.phy;
r = 0;
}
tlb_set_page(env, address, phy, prot, mmu_idx, TARGET_PAGE_SIZE);
return r;
}
void do_interrupt(CPUMoxieState *env)
{
switch (env->exception_index) {
case MOXIE_EX_BREAK:
break;
default:
break;
}
}
hwaddr cpu_get_phys_page_debug(CPUMoxieState *env, target_ulong addr)
{
uint32_t phy = addr;
MoxieMMUResult res;
int miss;
miss = moxie_mmu_translate(&res, env, addr, 0, 0);
if (!miss) {
phy = res.phy;
}
return phy;
}
#endif

9
target-moxie/helper.h Normal file
View File

@ -0,0 +1,9 @@
#include "exec/def-helper.h"
DEF_HELPER_2(raise_exception, void, env, int)
DEF_HELPER_1(debug, void, env)
DEF_HELPER_FLAGS_3(div, TCG_CALL_NO_WG, i32, env, i32, i32)
DEF_HELPER_FLAGS_3(udiv, TCG_CALL_NO_WG, i32, env, i32, i32)
#include "exec/def-helper.h"

28
target-moxie/machine.c Normal file
View File

@ -0,0 +1,28 @@
#include "hw/hw.h"
#include "hw/boards.h"
const VMStateDescription vmstate_moxie_cpu = {
.name = "cpu",
.version_id = CPU_SAVE_VERSION,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(flags, CPUMoxieState),
VMSTATE_UINT32_ARRAY(gregs, CPUMoxieState, 16),
VMSTATE_UINT32_ARRAY(sregs, CPUMoxieState, 256),
VMSTATE_UINT32(pc, CPUMoxieState),
VMSTATE_UINT32(cc_a, CPUMoxieState),
VMSTATE_UINT32(cc_b, CPUMoxieState),
VMSTATE_END_OF_LIST()
}
};
void cpu_save(QEMUFile *f, void *opaque)
{
vmstate_save_state(f, &vmstate_moxie_cpu, opaque);
}
int cpu_load(QEMUFile *f, void *opaque, int version_id)
{
return vmstate_load_state(f, &vmstate_moxie_cpu, opaque, version_id);
}

1
target-moxie/machine.h Normal file
View File

@ -0,0 +1 @@
extern const VMStateDescription vmstate_moxie_cpu;

36
target-moxie/mmu.c Normal file
View File

@ -0,0 +1,36 @@
/*
* Moxie mmu emulation.
*
* Copyright (c) 2008, 2013 Anthony Green
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser 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 <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "config.h"
#include "cpu.h"
#include "mmu.h"
#include "exec/exec-all.h"
int moxie_mmu_translate(MoxieMMUResult *res,
CPUMoxieState *env, uint32_t vaddr,
int rw, int mmu_idx)
{
/* Perform no translation yet. */
res->phy = vaddr;
return 0;
}

19
target-moxie/mmu.h Normal file
View File

@ -0,0 +1,19 @@
#define MOXIE_MMU_ERR_EXEC 0
#define MOXIE_MMU_ERR_READ 1
#define MOXIE_MMU_ERR_WRITE 2
#define MOXIE_MMU_ERR_FLUSH 3
typedef struct {
uint32_t phy;
uint32_t pfn;
int g:1;
int v:1;
int k:1;
int w:1;
int e:1;
int cause_op;
} MoxieMMUResult;
int moxie_mmu_translate(MoxieMMUResult *res,
CPUMoxieState *env, uint32_t vaddr,
int rw, int mmu_idx);

926
target-moxie/translate.c Normal file
View File

@ -0,0 +1,926 @@
/*
* Moxie emulation for qemu: main translation routines.
*
* Copyright (c) 2009, 2013 Anthony Green
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This library 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
* Lesser 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/>.
*/
/* For information on the Moxie architecture, see
* http://moxielogic.org/wiki
*/
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <assert.h>
#include "cpu.h"
#include "exec/exec-all.h"
#include "disas/disas.h"
#include "tcg-op.h"
#include "helper.h"
#define GEN_HELPER 1
#include "helper.h"
/* This is the state at translation time. */
typedef struct DisasContext {
struct TranslationBlock *tb;
target_ulong pc, saved_pc;
uint32_t opcode;
uint32_t fp_status;
/* Routine used to access memory */
int memidx;
int bstate;
target_ulong btarget;
int singlestep_enabled;
} DisasContext;
enum {
BS_NONE = 0, /* We go out of the TB without reaching a branch or an
* exception condition */
BS_STOP = 1, /* We want to stop translation for any reason */
BS_BRANCH = 2, /* We reached a branch condition */
BS_EXCP = 3, /* We reached an exception condition */
};
static TCGv cpu_pc;
static TCGv cpu_gregs[16];
static TCGv_ptr cpu_env;
static TCGv cc_a, cc_b;
#include "exec/gen-icount.h"
#define REG(x) (cpu_gregs[x])
/* Extract the signed 10-bit offset from a 16-bit branch
instruction. */
static int extract_branch_offset(int opcode)
{
return (((signed short)((opcode & ((1 << 10) - 1)) << 6)) >> 6) << 1;
}
void cpu_dump_state(CPUArchState *env, FILE *f, fprintf_function cpu_fprintf,
int flags)
{
int i;
cpu_fprintf(f, "pc=0x%08x\n", env->pc);
cpu_fprintf(f, "$fp=0x%08x $sp=0x%08x $r0=0x%08x $r1=0x%08x\n",
env->gregs[0], env->gregs[1], env->gregs[2], env->gregs[3]);
for (i = 4; i < 16; i += 4) {
cpu_fprintf(f, "$r%d=0x%08x $r%d=0x%08x $r%d=0x%08x $r%d=0x%08x\n",
i-2, env->gregs[i], i-1, env->gregs[i + 1],
i, env->gregs[i + 2], i+1, env->gregs[i + 3]);
}
for (i = 4; i < 16; i += 4) {
cpu_fprintf(f, "sr%d=0x%08x sr%d=0x%08x sr%d=0x%08x sr%d=0x%08x\n",
i-2, env->sregs[i], i-1, env->sregs[i + 1],
i, env->sregs[i + 2], i+1, env->sregs[i + 3]);
}
}
void moxie_translate_init(void)
{
int i;
static int done_init;
static const char * const gregnames[16] = {
"$fp", "$sp", "$r0", "$r1",
"$r2", "$r3", "$r4", "$r5",
"$r6", "$r7", "$r8", "$r9",
"$r10", "$r11", "$r12", "$r13"
};
if (done_init) {
return;
}
cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
cpu_pc = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUMoxieState, pc), "$pc");
for (i = 0; i < 16; i++)
cpu_gregs[i] = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUMoxieState, gregs[i]),
gregnames[i]);
cc_a = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUMoxieState, cc_a), "cc_a");
cc_b = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUMoxieState, cc_b), "cc_b");
done_init = 1;
}
static inline void gen_goto_tb(CPUMoxieState *env, DisasContext *ctx,
int n, target_ulong dest)
{
TranslationBlock *tb;
tb = ctx->tb;
if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) &&
!ctx->singlestep_enabled) {
tcg_gen_goto_tb(n);
tcg_gen_movi_i32(cpu_pc, dest);
tcg_gen_exit_tb((long) tb + n);
} else {
tcg_gen_movi_i32(cpu_pc, dest);
if (ctx->singlestep_enabled) {
gen_helper_debug(cpu_env);
}
tcg_gen_exit_tb(0);
}
}
static int decode_opc(MoxieCPU *cpu, DisasContext *ctx)
{
CPUMoxieState *env = &cpu->env;
/* Local cache for the instruction opcode. */
int opcode;
/* Set the default instruction length. */
int length = 2;
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
tcg_gen_debug_insn_start(ctx->pc);
}
/* Examine the 16-bit opcode. */
opcode = ctx->opcode;
/* Decode instruction. */
if (opcode & (1 << 15)) {
if (opcode & (1 << 14)) {
/* This is a Form 3 instruction. */
int inst = (opcode >> 10 & 0xf);
#define BRANCH(cond) \
do { \
int l1 = gen_new_label(); \
tcg_gen_brcond_i32(cond, cc_a, cc_b, l1); \
gen_goto_tb(env, ctx, 1, ctx->pc+2); \
gen_set_label(l1); \
gen_goto_tb(env, ctx, 0, extract_branch_offset(opcode) + ctx->pc+2); \
ctx->bstate = BS_BRANCH; \
} while (0)
switch (inst) {
case 0x00: /* beq */
BRANCH(TCG_COND_EQ);
break;
case 0x01: /* bne */
BRANCH(TCG_COND_NE);
break;
case 0x02: /* blt */
BRANCH(TCG_COND_LT);
break;
case 0x03: /* bgt */
BRANCH(TCG_COND_GT);
break;
case 0x04: /* bltu */
BRANCH(TCG_COND_LTU);
break;
case 0x05: /* bgtu */
BRANCH(TCG_COND_GTU);
break;
case 0x06: /* bge */
BRANCH(TCG_COND_GE);
break;
case 0x07: /* ble */
BRANCH(TCG_COND_LE);
break;
case 0x08: /* bgeu */
BRANCH(TCG_COND_GEU);
break;
case 0x09: /* bleu */
BRANCH(TCG_COND_LEU);
break;
default:
{
TCGv temp = tcg_temp_new_i32();
tcg_gen_movi_i32(cpu_pc, ctx->pc);
tcg_gen_movi_i32(temp, MOXIE_EX_BAD);
gen_helper_raise_exception(cpu_env, temp);
tcg_temp_free_i32(temp);
}
break;
}
} else {
/* This is a Form 2 instruction. */
int inst = (opcode >> 12 & 0x3);
switch (inst) {
case 0x00: /* inc */
{
int a = (opcode >> 8) & 0xf;
unsigned int v = (opcode & 0xff);
tcg_gen_addi_i32(REG(a), REG(a), v);
}
break;
case 0x01: /* dec */
{
int a = (opcode >> 8) & 0xf;
unsigned int v = (opcode & 0xff);
tcg_gen_subi_i32(REG(a), REG(a), v);
}
break;
case 0x02: /* gsr */
{
int a = (opcode >> 8) & 0xf;
unsigned v = (opcode & 0xff);
tcg_gen_ld_i32(REG(a), cpu_env,
offsetof(CPUMoxieState, sregs[v]));
}
break;
case 0x03: /* ssr */
{
int a = (opcode >> 8) & 0xf;
unsigned v = (opcode & 0xff);
tcg_gen_st_i32(REG(a), cpu_env,
offsetof(CPUMoxieState, sregs[v]));
}
break;
default:
{
TCGv temp = tcg_temp_new_i32();
tcg_gen_movi_i32(cpu_pc, ctx->pc);
tcg_gen_movi_i32(temp, MOXIE_EX_BAD);
gen_helper_raise_exception(cpu_env, temp);
tcg_temp_free_i32(temp);
}
break;
}
}
} else {
/* This is a Form 1 instruction. */
int inst = opcode >> 8;
switch (inst) {
case 0x00: /* nop */
break;
case 0x01: /* ldi.l (immediate) */
{
int reg = (opcode >> 4) & 0xf;
int val = cpu_ldl_code(env, ctx->pc+2);
tcg_gen_movi_i32(REG(reg), val);
length = 6;
}
break;
case 0x02: /* mov (register-to-register) */
{
int dest = (opcode >> 4) & 0xf;
int src = opcode & 0xf;
tcg_gen_mov_i32(REG(dest), REG(src));
}
break;
case 0x03: /* jsra */
{
TCGv t1 = tcg_temp_new_i32();
TCGv t2 = tcg_temp_new_i32();
tcg_gen_movi_i32(t1, ctx->pc + 6);
/* Make space for the static chain and return address. */
tcg_gen_subi_i32(t2, REG(1), 8);
tcg_gen_mov_i32(REG(1), t2);
tcg_gen_qemu_st32(t1, REG(1), ctx->memidx);
/* Push the current frame pointer. */
tcg_gen_subi_i32(t2, REG(1), 4);
tcg_gen_mov_i32(REG(1), t2);
tcg_gen_qemu_st32(REG(0), REG(1), ctx->memidx);
/* Set the pc and $fp. */
tcg_gen_mov_i32(REG(0), REG(1));
gen_goto_tb(env, ctx, 0, cpu_ldl_code(env, ctx->pc+2));
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t2);
ctx->bstate = BS_BRANCH;
length = 6;
}
break;
case 0x04: /* ret */
{
TCGv t1 = tcg_temp_new_i32();
/* The new $sp is the old $fp. */
tcg_gen_mov_i32(REG(1), REG(0));
/* Pop the frame pointer. */
tcg_gen_qemu_ld32u(REG(0), REG(1), ctx->memidx);
tcg_gen_addi_i32(t1, REG(1), 4);
tcg_gen_mov_i32(REG(1), t1);
/* Pop the return address and skip over the static chain
slot. */
tcg_gen_qemu_ld32u(cpu_pc, REG(1), ctx->memidx);
tcg_gen_addi_i32(t1, REG(1), 8);
tcg_gen_mov_i32(REG(1), t1);
tcg_temp_free_i32(t1);
/* Jump... */
tcg_gen_exit_tb(0);
ctx->bstate = BS_BRANCH;
}
break;
case 0x05: /* add.l */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
tcg_gen_add_i32(REG(a), REG(a), REG(b));
}
break;
case 0x06: /* push */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
TCGv t1 = tcg_temp_new_i32();
tcg_gen_subi_i32(t1, REG(a), 4);
tcg_gen_mov_i32(REG(a), t1);
tcg_gen_qemu_st32(REG(b), REG(a), ctx->memidx);
tcg_temp_free_i32(t1);
}
break;
case 0x07: /* pop */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
TCGv t1 = tcg_temp_new_i32();
tcg_gen_qemu_ld32u(REG(b), REG(a), ctx->memidx);
tcg_gen_addi_i32(t1, REG(a), 4);
tcg_gen_mov_i32(REG(a), t1);
tcg_temp_free_i32(t1);
}
break;
case 0x08: /* lda.l */
{
int reg = (opcode >> 4) & 0xf;
TCGv ptr = tcg_temp_new_i32();
tcg_gen_movi_i32(ptr, cpu_ldl_code(env, ctx->pc+2));
tcg_gen_qemu_ld32u(REG(reg), ptr, ctx->memidx);
tcg_temp_free_i32(ptr);
length = 6;
}
break;
case 0x09: /* sta.l */
{
int val = (opcode >> 4) & 0xf;
TCGv ptr = tcg_temp_new_i32();
tcg_gen_movi_i32(ptr, cpu_ldl_code(env, ctx->pc+2));
tcg_gen_qemu_st32(REG(val), ptr, ctx->memidx);
tcg_temp_free_i32(ptr);
length = 6;
}
break;
case 0x0a: /* ld.l (register indirect) */
{
int src = opcode & 0xf;
int dest = (opcode >> 4) & 0xf;
tcg_gen_qemu_ld32u(REG(dest), REG(src), ctx->memidx);
}
break;
case 0x0b: /* st.l */
{
int dest = (opcode >> 4) & 0xf;
int val = opcode & 0xf;
tcg_gen_qemu_st32(REG(val), REG(dest), ctx->memidx);
}
break;
case 0x0c: /* ldo.l */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
TCGv t1 = tcg_temp_new_i32();
TCGv t2 = tcg_temp_new_i32();
tcg_gen_addi_i32(t1, REG(b), cpu_ldl_code(env, ctx->pc+2));
tcg_gen_qemu_ld32u(t2, t1, ctx->memidx);
tcg_gen_mov_i32(REG(a), t2);
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t2);
length = 6;
}
break;
case 0x0d: /* sto.l */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
TCGv t1 = tcg_temp_new_i32();
TCGv t2 = tcg_temp_new_i32();
tcg_gen_addi_i32(t1, REG(a), cpu_ldl_code(env, ctx->pc+2));
tcg_gen_qemu_st32(REG(b), t1, ctx->memidx);
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t2);
length = 6;
}
break;
case 0x0e: /* cmp */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
tcg_gen_mov_i32(cc_a, REG(a));
tcg_gen_mov_i32(cc_b, REG(b));
}
break;
case 0x19: /* jsr */
{
int fnreg = (opcode >> 4) & 0xf;
/* Load the stack pointer into T0. */
TCGv t1 = tcg_temp_new_i32();
TCGv t2 = tcg_temp_new_i32();
tcg_gen_movi_i32(t1, ctx->pc+2);
/* Make space for the static chain and return address. */
tcg_gen_subi_i32(t2, REG(1), 8);
tcg_gen_mov_i32(REG(1), t2);
tcg_gen_qemu_st32(t1, REG(1), ctx->memidx);
/* Push the current frame pointer. */
tcg_gen_subi_i32(t2, REG(1), 4);
tcg_gen_mov_i32(REG(1), t2);
tcg_gen_qemu_st32(REG(0), REG(1), ctx->memidx);
/* Set the pc and $fp. */
tcg_gen_mov_i32(REG(0), REG(1));
tcg_gen_mov_i32(cpu_pc, REG(fnreg));
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t2);
tcg_gen_exit_tb(0);
ctx->bstate = BS_BRANCH;
}
break;
case 0x1a: /* jmpa */
{
tcg_gen_movi_i32(cpu_pc, cpu_ldl_code(env, ctx->pc+2));
tcg_gen_exit_tb(0);
ctx->bstate = BS_BRANCH;
length = 6;
}
break;
case 0x1b: /* ldi.b (immediate) */
{
int reg = (opcode >> 4) & 0xf;
int val = cpu_ldl_code(env, ctx->pc+2);
tcg_gen_movi_i32(REG(reg), val);
length = 6;
}
break;
case 0x1c: /* ld.b (register indirect) */
{
int src = opcode & 0xf;
int dest = (opcode >> 4) & 0xf;
tcg_gen_qemu_ld8u(REG(dest), REG(src), ctx->memidx);
}
break;
case 0x1d: /* lda.b */
{
int reg = (opcode >> 4) & 0xf;
TCGv ptr = tcg_temp_new_i32();
tcg_gen_movi_i32(ptr, cpu_ldl_code(env, ctx->pc+2));
tcg_gen_qemu_ld8u(REG(reg), ptr, ctx->memidx);
tcg_temp_free_i32(ptr);
length = 6;
}
break;
case 0x1e: /* st.b */
{
int dest = (opcode >> 4) & 0xf;
int val = opcode & 0xf;
tcg_gen_qemu_st8(REG(val), REG(dest), ctx->memidx);
}
break;
case 0x1f: /* sta.b */
{
int val = (opcode >> 4) & 0xf;
TCGv ptr = tcg_temp_new_i32();
tcg_gen_movi_i32(ptr, cpu_ldl_code(env, ctx->pc+2));
tcg_gen_qemu_st8(REG(val), ptr, ctx->memidx);
tcg_temp_free_i32(ptr);
length = 6;
}
break;
case 0x20: /* ldi.s (immediate) */
{
int reg = (opcode >> 4) & 0xf;
int val = cpu_ldl_code(env, ctx->pc+2);
tcg_gen_movi_i32(REG(reg), val);
length = 6;
}
break;
case 0x21: /* ld.s (register indirect) */
{
int src = opcode & 0xf;
int dest = (opcode >> 4) & 0xf;
tcg_gen_qemu_ld16u(REG(dest), REG(src), ctx->memidx);
}
break;
case 0x22: /* lda.s */
{
int reg = (opcode >> 4) & 0xf;
TCGv ptr = tcg_temp_new_i32();
tcg_gen_movi_i32(ptr, cpu_ldl_code(env, ctx->pc+2));
tcg_gen_qemu_ld16u(REG(reg), ptr, ctx->memidx);
tcg_temp_free_i32(ptr);
length = 6;
}
break;
case 0x23: /* st.s */
{
int dest = (opcode >> 4) & 0xf;
int val = opcode & 0xf;
tcg_gen_qemu_st16(REG(val), REG(dest), ctx->memidx);
}
break;
case 0x24: /* sta.s */
{
int val = (opcode >> 4) & 0xf;
TCGv ptr = tcg_temp_new_i32();
tcg_gen_movi_i32(ptr, cpu_ldl_code(env, ctx->pc+2));
tcg_gen_qemu_st16(REG(val), ptr, ctx->memidx);
tcg_temp_free_i32(ptr);
length = 6;
}
break;
case 0x25: /* jmp */
{
int reg = (opcode >> 4) & 0xf;
tcg_gen_mov_i32(cpu_pc, REG(reg));
tcg_gen_exit_tb(0);
ctx->bstate = BS_BRANCH;
}
break;
case 0x26: /* and */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
tcg_gen_and_i32(REG(a), REG(a), REG(b));
}
break;
case 0x27: /* lshr */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
TCGv sv = tcg_temp_new_i32();
tcg_gen_andi_i32(sv, REG(b), 0x1f);
tcg_gen_shr_i32(REG(a), REG(a), sv);
tcg_temp_free_i32(sv);
}
break;
case 0x28: /* ashl */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
TCGv sv = tcg_temp_new_i32();
tcg_gen_andi_i32(sv, REG(b), 0x1f);
tcg_gen_shl_i32(REG(a), REG(a), sv);
tcg_temp_free_i32(sv);
}
break;
case 0x29: /* sub.l */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
tcg_gen_sub_i32(REG(a), REG(a), REG(b));
}
break;
case 0x2a: /* neg */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
tcg_gen_neg_i32(REG(a), REG(b));
}
break;
case 0x2b: /* or */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
tcg_gen_or_i32(REG(a), REG(a), REG(b));
}
break;
case 0x2c: /* not */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
tcg_gen_not_i32(REG(a), REG(b));
}
break;
case 0x2d: /* ashr */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
TCGv sv = tcg_temp_new_i32();
tcg_gen_andi_i32(sv, REG(b), 0x1f);
tcg_gen_sar_i32(REG(a), REG(a), sv);
tcg_temp_free_i32(sv);
}
break;
case 0x2e: /* xor */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
tcg_gen_xor_i32(REG(a), REG(a), REG(b));
}
break;
case 0x2f: /* mul.l */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
tcg_gen_mul_i32(REG(a), REG(a), REG(b));
}
break;
case 0x30: /* swi */
{
int val = cpu_ldl_code(env, ctx->pc+2);
TCGv temp = tcg_temp_new_i32();
tcg_gen_movi_i32(temp, val);
tcg_gen_st_i32(temp, cpu_env,
offsetof(CPUMoxieState, sregs[3]));
tcg_gen_movi_i32(cpu_pc, ctx->pc);
tcg_gen_movi_i32(temp, MOXIE_EX_SWI);
gen_helper_raise_exception(cpu_env, temp);
tcg_temp_free_i32(temp);
length = 6;
}
break;
case 0x31: /* div.l */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
tcg_gen_movi_i32(cpu_pc, ctx->pc);
gen_helper_div(REG(a), cpu_env, REG(a), REG(b));
}
break;
case 0x32: /* udiv.l */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
tcg_gen_movi_i32(cpu_pc, ctx->pc);
gen_helper_udiv(REG(a), cpu_env, REG(a), REG(b));
}
break;
case 0x33: /* mod.l */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
tcg_gen_rem_i32(REG(a), REG(a), REG(b));
}
break;
case 0x34: /* umod.l */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
tcg_gen_remu_i32(REG(a), REG(a), REG(b));
}
break;
case 0x35: /* brk */
{
TCGv temp = tcg_temp_new_i32();
tcg_gen_movi_i32(cpu_pc, ctx->pc);
tcg_gen_movi_i32(temp, MOXIE_EX_BREAK);
gen_helper_raise_exception(cpu_env, temp);
tcg_temp_free_i32(temp);
}
break;
case 0x36: /* ldo.b */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
TCGv t1 = tcg_temp_new_i32();
TCGv t2 = tcg_temp_new_i32();
tcg_gen_addi_i32(t1, REG(b), cpu_ldl_code(env, ctx->pc+2));
tcg_gen_qemu_ld8u(t2, t1, ctx->memidx);
tcg_gen_mov_i32(REG(a), t2);
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t2);
length = 6;
}
break;
case 0x37: /* sto.b */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
TCGv t1 = tcg_temp_new_i32();
TCGv t2 = tcg_temp_new_i32();
tcg_gen_addi_i32(t1, REG(a), cpu_ldl_code(env, ctx->pc+2));
tcg_gen_qemu_st8(REG(b), t1, ctx->memidx);
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t2);
length = 6;
}
break;
case 0x38: /* ldo.s */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
TCGv t1 = tcg_temp_new_i32();
TCGv t2 = tcg_temp_new_i32();
tcg_gen_addi_i32(t1, REG(b), cpu_ldl_code(env, ctx->pc+2));
tcg_gen_qemu_ld16u(t2, t1, ctx->memidx);
tcg_gen_mov_i32(REG(a), t2);
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t2);
length = 6;
}
break;
case 0x39: /* sto.s */
{
int a = (opcode >> 4) & 0xf;
int b = opcode & 0xf;
TCGv t1 = tcg_temp_new_i32();
TCGv t2 = tcg_temp_new_i32();
tcg_gen_addi_i32(t1, REG(a), cpu_ldl_code(env, ctx->pc+2));
tcg_gen_qemu_st16(REG(b), t1, ctx->memidx);
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t2);
length = 6;
}
break;
default:
{
TCGv temp = tcg_temp_new_i32();
tcg_gen_movi_i32(cpu_pc, ctx->pc);
tcg_gen_movi_i32(temp, MOXIE_EX_BAD);
gen_helper_raise_exception(cpu_env, temp);
tcg_temp_free_i32(temp);
}
break;
}
}
return length;
}
/* generate intermediate code for basic block 'tb'. */
static void
gen_intermediate_code_internal(MoxieCPU *cpu, TranslationBlock *tb,
bool search_pc)
{
DisasContext ctx;
target_ulong pc_start;
uint16_t *gen_opc_end;
CPUBreakpoint *bp;
int j, lj = -1;
CPUMoxieState *env = &cpu->env;
int num_insns;
pc_start = tb->pc;
gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
ctx.pc = pc_start;
ctx.saved_pc = -1;
ctx.tb = tb;
ctx.memidx = 0;
ctx.singlestep_enabled = 0;
ctx.bstate = BS_NONE;
num_insns = 0;
gen_tb_start();
do {
if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
if (ctx.pc == bp->pc) {
tcg_gen_movi_i32(cpu_pc, ctx.pc);
gen_helper_debug(cpu_env);
ctx.bstate = BS_EXCP;
goto done_generating;
}
}
}
if (search_pc) {
j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
if (lj < j) {
lj++;
while (lj < j) {
tcg_ctx.gen_opc_instr_start[lj++] = 0;
}
}
tcg_ctx.gen_opc_pc[lj] = ctx.pc;
tcg_ctx.gen_opc_instr_start[lj] = 1;
tcg_ctx.gen_opc_icount[lj] = num_insns;
}
ctx.opcode = cpu_lduw_code(env, ctx.pc);
ctx.pc += decode_opc(cpu, &ctx);
num_insns++;
if (env->singlestep_enabled) {
break;
}
if ((ctx.pc & (TARGET_PAGE_SIZE - 1)) == 0) {
break;
}
} while (ctx.bstate == BS_NONE && tcg_ctx.gen_opc_ptr < gen_opc_end);
if (env->singlestep_enabled) {
tcg_gen_movi_tl(cpu_pc, ctx.pc);
gen_helper_debug(cpu_env);
} else {
switch (ctx.bstate) {
case BS_STOP:
case BS_NONE:
gen_goto_tb(env, &ctx, 0, ctx.pc);
break;
case BS_EXCP:
tcg_gen_exit_tb(0);
break;
case BS_BRANCH:
default:
break;
}
}
done_generating:
gen_tb_end(tb, num_insns);
*tcg_ctx.gen_opc_ptr = INDEX_op_end;
if (search_pc) {
j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
lj++;
while (lj <= j) {
tcg_ctx.gen_opc_instr_start[lj++] = 0;
}
} else {
tb->size = ctx.pc - pc_start;
tb->icount = num_insns;
}
}
void gen_intermediate_code(CPUMoxieState *env, struct TranslationBlock *tb)
{
gen_intermediate_code_internal(moxie_env_get_cpu(env), tb, false);
}
void gen_intermediate_code_pc(CPUMoxieState *env, struct TranslationBlock *tb)
{
gen_intermediate_code_internal(moxie_env_get_cpu(env), tb, true);
}
void restore_state_to_opc(CPUMoxieState *env, TranslationBlock *tb, int pc_pos)
{
env->pc = tcg_ctx.gen_opc_pc[pc_pos];
}