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cleanup sample_ppc.c

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Nguyen Anh Quynh 2020-05-27 16:54:00 +08:00
parent 1b4fb66138
commit b4894ce43e
1 changed files with 10 additions and 2 deletions
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12
samples/sample_ppc.c
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@ -1,5 +1,5 @@
/* Unicorn Emulator Engine */
/* By Nguyen Anh Quynh, 2015 */
/* By simigo79, 2020 */
/* Sample code to demonstrate how to emulate PPC code */
@ -9,9 +9,11 @@
// code to be emulated
#define PPC_CODE "\x7F\x46\x1A\x14" // add r26, r6, r3
// memory address where emulation starts
#define ADDRESS 0x10000
static void hook_block(uc_engine *uc, uint64_t address, uint32_t size, void *user_data)
{
printf(">>> Tracing basic block at 0x%"PRIx64 ", block size = 0x%x\n", address, size);
@ -44,20 +46,24 @@ static void test_ppc(void)
// map 2MB memory for this emulation
uc_mem_map(uc, ADDRESS, 2 * 1024 * 1024, UC_PROT_ALL);
// write machine code to be emulated to memory
uc_mem_write(uc, ADDRESS, PPC_CODE, sizeof(PPC_CODE) - 1);
// initialize machine registers
uc_reg_write(uc, UC_PPC_REG_3, &r3);
uc_reg_write(uc, UC_PPC_REG_6, &r6);
uc_reg_write(uc, UC_PPC_REG_26, &r26);
// tracing all basic blocks with customized callback
uc_hook_add(uc, &trace1, UC_HOOK_BLOCK, hook_block, NULL, 1, 0);
// tracing one instruction at ADDRESS with customized callback
uc_hook_add(uc, &trace2, UC_HOOK_CODE, hook_code, NULL, ADDRESS, ADDRESS);
// emulate machine code in infinite time (last param = 0), or when
// finishing all the code.
err = uc_emu_start(uc, ADDRESS, ADDRESS + sizeof(PPC_CODE) -1, 0, 100);
err = uc_emu_start(uc, ADDRESS, ADDRESS + sizeof(PPC_CODE) -1, 0, 0);
if (err) {
printf("Failed on uc_emu_start() with error returned: %u\n", err);
}
@ -67,6 +73,8 @@ static void test_ppc(void)
uc_reg_read(uc, UC_PPC_REG_26, &r26);
printf(">>> r26 = 0x%x\n", r26);
// close engine when done
uc_close(uc);
}