mirror of
https://github.com/yuzu-emu/unicorn
synced 2024-11-23 23:13:38 +00:00
293 lines
11 KiB
C
293 lines
11 KiB
C
/*
|
|
|
|
uc_mem_unmap demo / unit test
|
|
|
|
Copyright(c) 2015 Chris Eagle
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
version 2 as published by the Free Software Foundation.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
|
|
*/
|
|
|
|
#define __STDC_FORMAT_MACROS
|
|
#include "unicorn/platform.h"
|
|
#include <string.h>
|
|
#include "unicorn/platform.h"
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
|
|
#include <unicorn/unicorn.h>
|
|
|
|
unsigned char PROGRAM[] =
|
|
"\xc7\x05\x00\x00\x20\x00\x41\x41\x41\x41\x90\xc7\x05\x00\x00\x20"
|
|
"\x00\x42\x42\x42\x42\xc7\x05\x00\x00\x30\x00\x43\x43\x43\x43\x90"
|
|
"\xc7\x05\x00\x00\x30\x00\x44\x44\x44\x44\xc7\x05\x00\x00\x40\x00"
|
|
"\x45\x45\x45\x45\x90\xc7\x05\x00\x00\x40\x00\x46\x46\x46\x46\xf4";
|
|
// total size: 64 bytes
|
|
|
|
/*
|
|
; assumes code section at 0x100000
|
|
; assumes data section at 0x200000, initially rw
|
|
; assumes data section at 0x300000, initially rw
|
|
; assumes data section at 0x400000, initially rw
|
|
|
|
; with installed hooks unmaps or maps on each nop
|
|
|
|
mov dword [0x200000], 0x41414141
|
|
nop ; unmap it
|
|
mov dword [0x200000], 0x42424242
|
|
|
|
mov dword [0x300000], 0x43434343
|
|
nop ; unmap it
|
|
mov dword [0x300000], 0x44444444
|
|
|
|
mov dword [0x400000], 0x45454545
|
|
nop ; unmap it
|
|
mov dword [0x400000], 0x46464646
|
|
|
|
hlt ; tell hook function we are done
|
|
*/
|
|
|
|
int test_num = 0;
|
|
uint32_t tests[] = {
|
|
0x41414141,
|
|
0x43434343,
|
|
0x45454545
|
|
};
|
|
|
|
static int log_num = 1;
|
|
|
|
#define CODE_SECTION 0x100000
|
|
#define CODE_SIZE 0x1000
|
|
|
|
// callback for tracing instruction
|
|
static void hook_code(uc_engine *uc, uint64_t addr, uint32_t size, void *user_data)
|
|
{
|
|
uint8_t opcode;
|
|
uint32_t testval;
|
|
if (uc_mem_read(uc, addr, &opcode, 1) != UC_ERR_OK) {
|
|
printf("not ok %d - uc_mem_read fail during hook_code callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
|
|
}
|
|
printf("ok %d - uc_mem_read for opcode at address 0x%" PRIx64 "\n", log_num++, addr);
|
|
switch (opcode) {
|
|
case 0x90: //nop
|
|
printf("# Handling NOP\n");
|
|
if (uc_mem_read(uc, 0x200000 + test_num * 0x100000, &testval, sizeof(testval)) != UC_ERR_OK) {
|
|
printf("not ok %d - uc_mem_read fail for address: 0x%x\n", log_num++, 0x200000 + test_num * 0x100000);
|
|
} else {
|
|
printf("ok %d - good uc_mem_read for address: 0x%x\n", log_num++, 0x200000 + test_num * 0x100000);
|
|
printf("# uc_mem_read for test %d\n", test_num);
|
|
|
|
if (testval == tests[test_num]) {
|
|
printf("ok %d - passed test %d\n", log_num++, test_num);
|
|
} else {
|
|
printf("not ok %d - failed test %d\n", log_num++, test_num);
|
|
printf("# Expected: 0x%x\n",tests[test_num]);
|
|
printf("# Received: 0x%x\n", testval);
|
|
}
|
|
}
|
|
if (uc_mem_unmap(uc, 0x200000 + test_num * 0x100000, 0x1000) != UC_ERR_OK) {
|
|
printf("not ok %d - uc_mem_unmap fail during hook_code callback, addr: 0x%x\n", log_num++, 0x200000 + test_num * 0x100000);
|
|
} else {
|
|
printf("ok %d - uc_mem_unmap success\n", log_num++);
|
|
}
|
|
test_num++;
|
|
break;
|
|
case 0xf4: //hlt
|
|
printf("# Handling HLT\n");
|
|
if (uc_emu_stop(uc) != UC_ERR_OK) {
|
|
printf("not ok %d - uc_emu_stop fail during hook_code callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
|
|
_exit(-1);
|
|
} else {
|
|
printf("ok %d - hlt encountered, uc_emu_stop called\n", log_num++);
|
|
}
|
|
break;
|
|
default: //all others
|
|
printf("# Handling OTHER\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
// callback for tracing memory access (READ or WRITE)
|
|
static void hook_mem_write(uc_engine *uc, uc_mem_type type,
|
|
uint64_t addr, int size, int64_t value, void *user_data)
|
|
{
|
|
printf("# write to memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
|
|
}
|
|
|
|
// callback for tracing invalid memory access (READ or WRITE)
|
|
static bool hook_mem_invalid(uc_engine *uc, uc_mem_type type,
|
|
uint64_t addr, int size, int64_t value, void *user_data)
|
|
{
|
|
uint32_t testval;
|
|
switch(type) {
|
|
default:
|
|
printf("not ok %d - memory invalid type: %d at 0x%" PRIx64 "\n", log_num++, type, addr);
|
|
return false;
|
|
case UC_MEM_WRITE_UNMAPPED:
|
|
printf("# write to invalid memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
|
|
|
|
if (uc_mem_read(uc, addr, &testval, sizeof(testval)) != UC_ERR_OK) {
|
|
printf("ok %d - uc_mem_read fail for address: 0x%" PRIx64 "\n", log_num++, addr);
|
|
} else {
|
|
printf("not ok %d - uc_mem_read success after unmap at test %d\n", log_num++, test_num - 1);
|
|
}
|
|
|
|
if (uc_mem_map(uc, addr & ~0xfffL, 0x1000, UC_PROT_READ | UC_PROT_WRITE) != UC_ERR_OK) {
|
|
printf("not ok %d - uc_mem_map fail during hook_mem_invalid callback, addr: 0x%" PRIx64 "\n", log_num++, addr);
|
|
} else {
|
|
printf("ok %d - uc_mem_map success\n", log_num++);
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
|
|
int main(int argc, char **argv, char **envp)
|
|
{
|
|
uc_engine *uc;
|
|
uc_hook trace1, trace2;
|
|
uc_err err;
|
|
uint32_t addr, testval;
|
|
int32_t buf1[1024], buf2[1024], readbuf[1024];
|
|
int i;
|
|
|
|
//don't really care about quality of randomness
|
|
srand(time(NULL));
|
|
for (i = 0; i < 1024; i++) {
|
|
buf1[i] = rand();
|
|
buf2[i] = rand();
|
|
}
|
|
|
|
printf("# Memory unmapping test\n");
|
|
|
|
// Initialize emulator in X86-32bit mode
|
|
err = uc_open(UC_ARCH_X86, UC_MODE_32, &uc);
|
|
if (err) {
|
|
printf("not ok %d - Failed on uc_open() with error returned: %u\n", log_num++, err);
|
|
return 1;
|
|
} else {
|
|
printf("ok %d - uc_open() success\n", log_num++);
|
|
}
|
|
|
|
uc_mem_map(uc, CODE_SECTION, CODE_SIZE, UC_PROT_READ | UC_PROT_EXEC);
|
|
uc_mem_map(uc, 0x200000, 0x1000, UC_PROT_READ | UC_PROT_WRITE);
|
|
uc_mem_map(uc, 0x300000, 0x1000, UC_PROT_READ | UC_PROT_WRITE);
|
|
uc_mem_map(uc, 0x3ff000, 0x3000, UC_PROT_READ | UC_PROT_WRITE);
|
|
|
|
// fill in sections that shouldn't get touched
|
|
if (uc_mem_write(uc, 0x3ff000, buf1, sizeof(buf1))) {
|
|
printf("not ok %d - Failed to write random buffer 1 to memory, quit!\n", log_num++);
|
|
return 2;
|
|
} else {
|
|
printf("ok %d - Random buffer 1 written to memory\n", log_num++);
|
|
}
|
|
|
|
if (uc_mem_write(uc, 0x401000, buf2, sizeof(buf1))) {
|
|
printf("not ok %d - Failed to write random buffer 2 to memory, quit!\n", log_num++);
|
|
return 3;
|
|
} else {
|
|
printf("ok %d - Random buffer 2 written to memory\n", log_num++);
|
|
}
|
|
|
|
// write machine code to be emulated to memory
|
|
if (uc_mem_write(uc, CODE_SECTION, PROGRAM, sizeof(PROGRAM))) {
|
|
printf("not ok %d - Failed to write emulation code to memory, quit!\n", log_num++);
|
|
return 4;
|
|
} else {
|
|
printf("ok %d - Program written to memory\n", log_num++);
|
|
}
|
|
|
|
if (uc_hook_add(uc, &trace2, UC_HOOK_CODE, hook_code, NULL, 1, 0) != UC_ERR_OK) {
|
|
printf("not ok %d - Failed to install UC_HOOK_CODE ucr\n", log_num++);
|
|
return 5;
|
|
} else {
|
|
printf("ok %d - UC_HOOK_CODE installed\n", log_num++);
|
|
}
|
|
|
|
// intercept memory write events
|
|
if (uc_hook_add(uc, &trace1, UC_HOOK_MEM_WRITE, hook_mem_write, NULL, 1, 0) != UC_ERR_OK) {
|
|
printf("not ok %d - Failed to install UC_HOOK_MEM_WRITE ucr\n", log_num++);
|
|
return 6;
|
|
} else {
|
|
printf("ok %d - UC_HOOK_MEM_WRITE installed\n", log_num++);
|
|
}
|
|
|
|
// intercept invalid memory events
|
|
if (uc_hook_add(uc, &trace1, UC_HOOK_MEM_WRITE_UNMAPPED, hook_mem_invalid, NULL, 1, 0) != UC_ERR_OK) {
|
|
printf("not ok %d - Failed to install memory invalid handler\n", log_num++);
|
|
return 7;
|
|
} else {
|
|
printf("ok %d - memory invalid handler installed\n", log_num++);
|
|
}
|
|
|
|
// emulate machine code until told to stop by hook_code
|
|
printf("# BEGIN execution\n");
|
|
err = uc_emu_start(uc, CODE_SECTION, CODE_SECTION + CODE_SIZE, 0, 0);
|
|
if (err != UC_ERR_OK) {
|
|
printf("not ok %d - Failure on uc_emu_start() with error %u:%s\n", log_num++, err, uc_strerror(err));
|
|
return 8;
|
|
} else {
|
|
printf("ok %d - uc_emu_start complete\n", log_num++);
|
|
}
|
|
printf("# END execution\n");
|
|
|
|
//read from the remapped memory
|
|
testval = 0x42424242;
|
|
for (addr = 0x200000; addr <= 0x400000; addr += 0x100000) {
|
|
uint32_t val;
|
|
if (uc_mem_read(uc, addr, &val, sizeof(val)) != UC_ERR_OK) {
|
|
printf("not ok %d - Failed uc_mem_read for address 0x%x\n", log_num++, addr);
|
|
} else {
|
|
printf("ok %d - Good uc_mem_read from 0x%x\n", log_num++, addr);
|
|
}
|
|
if (val != testval) {
|
|
printf("not ok %d - Read 0x%x, expected 0x%x\n", log_num++, val, testval);
|
|
} else {
|
|
printf("ok %d - Correct value retrieved\n", log_num++);
|
|
}
|
|
testval += 0x02020202;
|
|
}
|
|
|
|
//make sure that random blocks didn't get nuked
|
|
// fill in sections that shouldn't get touched
|
|
if (uc_mem_read(uc, 0x3ff000, readbuf, sizeof(readbuf))) {
|
|
printf("not ok %d - Failed to read random buffer 1 from memory\n", log_num++);
|
|
} else {
|
|
printf("ok %d - Random buffer 1 read from memory\n", log_num++);
|
|
if (memcmp(buf1, readbuf, 4096)) {
|
|
printf("not ok %d - Random buffer 1 contents are incorrect\n", log_num++);
|
|
} else {
|
|
printf("ok %d - Random buffer 1 contents are correct\n", log_num++);
|
|
}
|
|
}
|
|
|
|
if (uc_mem_read(uc, 0x401000, readbuf, sizeof(readbuf))) {
|
|
printf("not ok %d - Failed to read random buffer 2 from memory\n", log_num++);
|
|
} else {
|
|
printf("ok %d - Random buffer 2 read from memory\n", log_num++);
|
|
if (memcmp(buf2, readbuf, 4096)) {
|
|
printf("not ok %d - Random buffer 2 contents are incorrect\n", log_num++);
|
|
} else {
|
|
printf("ok %d - Random buffer 2 contents are correct\n", log_num++);
|
|
}
|
|
}
|
|
|
|
if (uc_close(uc) == UC_ERR_OK) {
|
|
printf("ok %d - uc_close complete\n", log_num++);
|
|
} else {
|
|
printf("not ok %d - uc_close complete\n", log_num++);
|
|
}
|
|
|
|
return 0;
|
|
}
|