unicorn/qemu/target-m68k/unicorn.c
2016-09-23 07:38:21 -07:00

93 lines
2.6 KiB
C

/* Unicorn Emulator Engine */
/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2015 */
#include "hw/boards.h"
#include "hw/m68k/m68k.h"
#include "sysemu/cpus.h"
#include "unicorn.h"
#include "cpu.h"
#include "unicorn_common.h"
#include "uc_priv.h"
static void m68k_set_pc(struct uc_struct *uc, uint64_t address)
{
((CPUM68KState *)uc->current_cpu->env_ptr)->pc = address;
}
void m68k_reg_reset(struct uc_struct *uc)
{
CPUArchState *env = uc->cpu->env_ptr;
memset(env->aregs, 0, sizeof(env->aregs));
memset(env->dregs, 0, sizeof(env->dregs));
env->pc = 0;
}
int m68k_reg_read(struct uc_struct *uc, unsigned int *regs, void **vals, int count)
{
CPUState *mycpu = uc->cpu;
int i;
for (i = 0; i < count; i++) {
unsigned int regid = regs[i];
void *value = vals[i];
if (regid >= UC_M68K_REG_A0 && regid <= UC_M68K_REG_A7)
*(int32_t *)value = M68K_CPU(uc, mycpu)->env.aregs[regid - UC_M68K_REG_A0];
else if (regid >= UC_M68K_REG_D0 && regid <= UC_M68K_REG_D7)
*(int32_t *)value = M68K_CPU(uc, mycpu)->env.dregs[regid - UC_M68K_REG_D0];
else {
switch(regid) {
default: break;
case UC_M68K_REG_PC:
*(int32_t *)value = M68K_CPU(uc, mycpu)->env.pc;
break;
}
}
}
return 0;
}
int m68k_reg_write(struct uc_struct *uc, unsigned int *regs, void *const *vals, int count)
{
CPUState *mycpu = uc->cpu;
int i;
for (i = 0; i < count; i++) {
unsigned int regid = regs[i];
const void *value = vals[i];
if (regid >= UC_M68K_REG_A0 && regid <= UC_M68K_REG_A7)
M68K_CPU(uc, mycpu)->env.aregs[regid - UC_M68K_REG_A0] = *(uint32_t *)value;
else if (regid >= UC_M68K_REG_D0 && regid <= UC_M68K_REG_D7)
M68K_CPU(uc, mycpu)->env.dregs[regid - UC_M68K_REG_D0] = *(uint32_t *)value;
else {
switch(regid) {
default: break;
case UC_M68K_REG_PC:
M68K_CPU(uc, mycpu)->env.pc = *(uint32_t *)value;
// force to quit execution and flush TB
uc->quit_request = true;
uc_emu_stop(uc);
break;
}
}
}
return 0;
}
__attribute__ ((visibility ("default")))
void m68k_uc_init(struct uc_struct* uc)
{
register_accel_types(uc);
m68k_cpu_register_types(uc);
dummy_m68k_machine_init(uc);
uc->reg_read = m68k_reg_read;
uc->reg_write = m68k_reg_write;
uc->reg_reset = m68k_reg_reset;
uc->set_pc = m68k_set_pc;
uc_common_init(uc);
}