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setup stack pointer in ro_mem_test

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This commit is contained in:
Chris Eagle 2015-08-26 21:28:36 -07:00
parent 4b529bc56c
commit dec793e984
1 changed files with 23 additions and 1 deletions
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24
regress/ro_mem_test.c Normal file → Executable file
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@ -18,10 +18,25 @@ bottom:
call top call top
*/ */
// callback for tracing instruction
static void hook_code(uch handle, uint64_t address, uint32_t size, void *user_data)
{
uint32_t esp;
printf(">>> Tracing instruction at 0x%"PRIx64 ", instruction size = 0x%x\n", address, size);
uc_reg_read(handle, UC_X86_REG_ESP, &esp);
printf(">>> --- ESP is 0x%x\n", esp);
}
#define STACK 0x500000
#define STACK_SIZE 0x5000
int main(int argc, char **argv, char **envp) { int main(int argc, char **argv, char **envp) {
uch handle; uch handle, trace2;
uc_err err; uc_err err;
uint8_t bytes[8]; uint8_t bytes[8];
uint32_t esp;
printf("Memory mapping test\n"); printf("Memory mapping test\n");
@ -36,6 +51,11 @@ int main(int argc, char **argv, char **envp) {
uc_mem_map(handle, 0x200000, 0x2000); uc_mem_map(handle, 0x200000, 0x2000);
uc_mem_map(handle, 0x300000, 0x3000); uc_mem_map(handle, 0x300000, 0x3000);
uc_mem_map_ex(handle, 0x400000, 0x4000, UC_PROT_READ | UC_PROT_EXEC); uc_mem_map_ex(handle, 0x400000, 0x4000, UC_PROT_READ | UC_PROT_EXEC);
uc_mem_map_ex(handle, STACK, STACK_SIZE, UC_PROT_READ | UC_PROT_WRITE);
esp = STACK + STACK_SIZE;
uc_reg_write(handle, UC_X86_REG_ESP, &esp);
// write machine code to be emulated to memory // write machine code to be emulated to memory
if (uc_mem_write(handle, 0x400000, PROGRAM, sizeof(PROGRAM))) { if (uc_mem_write(handle, 0x400000, PROGRAM, sizeof(PROGRAM))) {
@ -46,6 +66,8 @@ int main(int argc, char **argv, char **envp) {
printf("Allowed to write to read only memory via uc_mem_write\n"); printf("Allowed to write to read only memory via uc_mem_write\n");
} }
//uc_hook_add(handle, &trace2, UC_HOOK_CODE, hook_code, NULL, (uint64_t)0x400000, (uint64_t)0x400fff);
// emulate machine code in infinite time // emulate machine code in infinite time
printf("BEGIN execution\n"); printf("BEGIN execution\n");
err = uc_emu_start(handle, 0x400000, 0x400000 + sizeof(PROGRAM), 0, 5); err = uc_emu_start(handle, 0x400000, 0x400000 + sizeof(PROGRAM), 0, 5);