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Add arm ite blocks samples from #853 (#1381)

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lazymio 2021-03-30 12:06:26 +08:00 committed by GitHub
parent 34ddafcbcf
commit bf1713d9e0
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1 changed files with 67 additions and 1 deletions
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68
samples/sample_arm.c
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@ -11,6 +11,8 @@
#define ARM_CODE "\x37\x00\xa0\xe3\x03\x10\x42\xe0" // mov r0, #0x37; sub r1, r2, r3
#define THUMB_CODE "\x83\xb0" // sub sp, #0xc
#define ARM_THUM_COND_CODE "\x9a\x42\x14\xbf\x68\x22\x4d\x22" // 'cmp r2, r3\nit ne\nmov r2, #0x68\nmov r2, #0x4d'
// memory address where emulation starts
#define ADDRESS 0x10000
@ -130,6 +132,69 @@ static void test_thumb(void)
uc_close(uc);
}
static void test_thumb_ite() {
uc_engine *uc;
uc_err err;
uint32_t sp = 0x1234;
uint32_t r2 = 0, r3 = 1;
uint32_t step_r2, step_r3;
int i, addr=ADDRESS;
printf("Emulate a THUMB ITE block as a whole or per instruction.\n");
err = uc_open(UC_ARCH_ARM, UC_MODE_THUMB, &uc);
if (err) {
printf("Failed on uc_open() with error returned: %u (%s)\n",
err, uc_strerror(err));
return;
}
uc_mem_map(uc, ADDRESS, 2 * 1024 * 1024, UC_PROT_ALL);
uc_mem_write(uc, ADDRESS, ARM_THUM_COND_CODE, sizeof(ARM_THUM_COND_CODE) - 1);
uc_reg_write(uc, UC_ARM_REG_SP, &sp);
uc_reg_write(uc, UC_ARM_REG_R2, &r2);
uc_reg_write(uc, UC_ARM_REG_R3, &r3);
// Run once.
printf("Running the entire binary.\n");
err = uc_emu_start(uc, ADDRESS | 1, ADDRESS + sizeof(ARM_THUM_COND_CODE) - 1, 0, 0);
if (err) {
printf("Failed on uc_emu_start() with error returned: %u\n", err);
}
uc_reg_read(uc, UC_ARM_REG_R2, &r2);
uc_reg_read(uc, UC_ARM_REG_R3, &r3);
printf(">>> R2: %d\n", r2);
printf(">>> R3: %d\n\n", r3);
// Step each instruction.
printf("Running the binary one instruction at a time.\n");
for (i = 0; i < sizeof(ARM_THUM_COND_CODE) / 2; i++) {
err = uc_emu_start(uc, addr | 1, ADDRESS + sizeof(ARM_THUM_COND_CODE) - 1, 0, 1);
if (err) {
printf("Failed on uc_emu_start() with error returned: %u\n", err);
}
uc_reg_read(uc, UC_ARM_REG_PC, &addr);
}
uc_reg_read(uc, UC_ARM_REG_R2, &step_r2);
uc_reg_read(uc, UC_ARM_REG_R3, &step_r3);
printf(">>> R2: %d\n", step_r2);
printf(">>> R3: %d\n\n", step_r3);
if (step_r2 != r2 || step_r3 != r3) {
printf("Failed with ARM ITE blocks stepping!\n");
}
uc_close(uc);
}
int main(int argc, char **argv, char **envp)
{
// dynamically load shared library
@ -146,7 +211,8 @@ int main(int argc, char **argv, char **envp)
test_arm();
printf("==========================\n");
test_thumb();
printf("==========================\n");
test_thumb_ite();
// dynamically free shared library
#ifdef DYNLOAD
uc_dyn_free();