unicorn/qemu/target-sparc/unicorn.c
2015-09-16 16:04:12 +07:00

110 lines
3.4 KiB
C

/* Unicorn Emulator Engine */
/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2015 */
#include "hw/boards.h"
#include "hw/sparc/sparc.h"
#include "sysemu/cpus.h"
#include "unicorn.h"
#include "cpu.h"
#include "unicorn_common.h"
#define READ_QWORD(x) ((uint64)x)
#define READ_DWORD(x) (x & 0xffffffff)
#define READ_WORD(x) (x & 0xffff)
#define READ_BYTE_H(x) ((x & 0xffff) >> 8)
#define READ_BYTE_L(x) (x & 0xff)
static bool sparc_stop_interrupt(int intno)
{
switch(intno) {
default:
return false;
case TT_ILL_INSN:
return true;
}
}
static void sparc_set_pc(struct uc_struct *uc, uint64_t address)
{
((CPUSPARCState *)uc->current_cpu->env_ptr)->pc = address;
((CPUSPARCState *)uc->current_cpu->env_ptr)->npc = address + 4;
}
void sparc_reg_reset(struct uc_struct *uc)
{
CPUArchState *env = first_cpu->env_ptr;
memset(env->gregs, 0, sizeof(env->gregs));
memset(env->fpr, 0, sizeof(env->fpr));
memset(env->regbase, 0, sizeof(env->regbase));
env->pc = 0;
env->npc = 0;
env->regwptr = env->regbase;
}
int sparc_reg_read(struct uc_struct *uc, unsigned int regid, void *value)
{
CPUState *mycpu = first_cpu;
if (regid >= UC_SPARC_REG_G0 && regid <= UC_SPARC_REG_G7)
*(int32_t *)value = SPARC_CPU(uc, mycpu)->env.gregs[regid - UC_SPARC_REG_G0];
else if (regid >= UC_SPARC_REG_O0 && regid <= UC_SPARC_REG_O7)
*(int32_t *)value = SPARC_CPU(uc, mycpu)->env.regwptr[regid - UC_SPARC_REG_O0];
else if (regid >= UC_SPARC_REG_L0 && regid <= UC_SPARC_REG_L7)
*(int32_t *)value = SPARC_CPU(uc, mycpu)->env.regwptr[8 + regid - UC_SPARC_REG_L0];
else if (regid >= UC_SPARC_REG_I0 && regid <= UC_SPARC_REG_I7)
*(int32_t *)value = SPARC_CPU(uc, mycpu)->env.regwptr[16 + regid - UC_SPARC_REG_I0];
else {
switch(regid) {
default: break;
case UC_SPARC_REG_PC:
*(int32_t *)value = SPARC_CPU(uc, mycpu)->env.pc;
break;
}
}
return 0;
}
int sparc_reg_write(struct uc_struct *uc, unsigned int regid, const void *value)
{
CPUState *mycpu = first_cpu;
if (regid >= UC_SPARC_REG_G0 && regid <= UC_SPARC_REG_G7)
SPARC_CPU(uc, mycpu)->env.gregs[regid - UC_SPARC_REG_G0] = *(uint32_t *)value;
else if (regid >= UC_SPARC_REG_O0 && regid <= UC_SPARC_REG_O7)
SPARC_CPU(uc, mycpu)->env.regwptr[regid - UC_SPARC_REG_O0] = *(uint32_t *)value;
else if (regid >= UC_SPARC_REG_L0 && regid <= UC_SPARC_REG_L7)
SPARC_CPU(uc, mycpu)->env.regwptr[8 + regid - UC_SPARC_REG_L0] = *(uint32_t *)value;
else if (regid >= UC_SPARC_REG_I0 && regid <= UC_SPARC_REG_I7)
SPARC_CPU(uc, mycpu)->env.regwptr[16 + regid - UC_SPARC_REG_I0] = *(uint32_t *)value;
else {
switch(regid) {
default: break;
case UC_SPARC_REG_PC:
SPARC_CPU(uc, mycpu)->env.pc = *(uint32_t *)value;
SPARC_CPU(uc, mycpu)->env.npc = *(uint32_t *)value + 4;
break;
}
}
return 0;
}
__attribute__ ((visibility ("default")))
void sparc_uc_init(struct uc_struct* uc)
{
register_accel_types(uc);
sparc_cpu_register_types(uc);
leon3_machine_init(uc);
uc->reg_read = sparc_reg_read;
uc->reg_write = sparc_reg_write;
uc->reg_reset = sparc_reg_reset;
uc->set_pc = sparc_set_pc;
uc->stop_interrupt = sparc_stop_interrupt;
uc_common_init(uc);
}