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Add clang-format and format code to qemu code style

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This commit is contained in:
lazymio
2021-10-29 12:44:49 +02:00
parent 9e1443013b
commit e62b0ef255
49 changed files with 4967 additions and 4190 deletions
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179
samples/mem_apis.c
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@ -14,24 +14,24 @@
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.
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
USA.
*/
#define __STDC_FORMAT_MACROS
#include <unicorn/unicorn.h>
#include <string.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
static int insts_executed;
// callback for tracing instructions, detect HLT and terminate emulation
static void hook_code(uc_engine *uc, uint64_t addr, uint32_t size, void *user_data)
static void hook_code(uc_engine *uc, uint64_t addr, uint32_t size,
void *user_data)
{
uint8_t opcode;
unsigned char buf[256];
@ -39,61 +39,81 @@ static void hook_code(uc_engine *uc, uint64_t addr, uint32_t size, void *user_da
insts_executed++;
if (uc_mem_read(uc, addr, buf, size) != UC_ERR_OK) {
printf("not ok - uc_mem_read fail during hook_code callback, addr: 0x%" PRIx64 "\n", addr);
printf("not ok - uc_mem_read fail during hook_code callback, addr: "
"0x%" PRIx64 "\n",
addr);
if (uc_emu_stop(uc) != UC_ERR_OK) {
printf("not ok - uc_emu_stop fail during hook_code callback, addr: 0x%" PRIx64 "\n", addr);
printf("not ok - uc_emu_stop fail during hook_code callback, addr: "
"0x%" PRIx64 "\n",
addr);
_exit(-1);
}
}
opcode = buf[0];
switch (opcode) {
case 0x41: // inc ecx
if (uc_mem_protect(uc, 0x101000, 0x1000, UC_PROT_READ) != UC_ERR_OK) {
printf("not ok - uc_mem_protect fail during hook_code callback, addr: 0x%" PRIx64 "\n", addr);
_exit(-1);
}
break;
case 0x42: // inc edx
if (uc_mem_unmap(uc, 0x101000, 0x1000) != UC_ERR_OK) {
printf("not ok - uc_mem_unmap fail during hook_code callback, addr: 0x%" PRIx64 "\n", addr);
_exit(-1);
}
break;
case 0xf4: // hlt
if (uc_emu_stop(uc) != UC_ERR_OK) {
printf("not ok - uc_emu_stop fail during hook_code callback, addr: 0x%" PRIx64 "\n", addr);
_exit(-1);
}
break;
default: // all others
break;
case 0x41: // inc ecx
if (uc_mem_protect(uc, 0x101000, 0x1000, UC_PROT_READ) != UC_ERR_OK) {
printf("not ok - uc_mem_protect fail during hook_code callback, "
"addr: 0x%" PRIx64 "\n",
addr);
_exit(-1);
}
break;
case 0x42: // inc edx
if (uc_mem_unmap(uc, 0x101000, 0x1000) != UC_ERR_OK) {
printf("not ok - uc_mem_unmap fail during hook_code callback, "
"addr: 0x%" PRIx64 "\n",
addr);
_exit(-1);
}
break;
case 0xf4: // hlt
if (uc_emu_stop(uc) != UC_ERR_OK) {
printf("not ok - uc_emu_stop fail during hook_code callback, addr: "
"0x%" PRIx64 "\n",
addr);
_exit(-1);
}
break;
default: // all others
break;
}
}
// callback for tracing invalid memory access (READ/WRITE/EXEC)
static bool hook_mem_invalid(uc_engine *uc, uc_mem_type type,
uint64_t addr, int size, int64_t value, void *user_data)
static bool hook_mem_invalid(uc_engine *uc, uc_mem_type type, uint64_t addr,
int size, int64_t value, void *user_data)
{
switch(type) {
default:
printf("not ok - UC_HOOK_MEM_INVALID type: %d at 0x%" PRIx64 "\n", type, addr);
return false;
case UC_MEM_READ_UNMAPPED:
printf("not ok - Read from invalid memory at 0x%"PRIx64 ", data size = %u\n", addr, size);
return false;
case UC_MEM_WRITE_UNMAPPED:
printf("not ok - Write to invalid memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
return false;
case UC_MEM_FETCH_PROT:
printf("not ok - Fetch from non-executable memory at 0x%"PRIx64 "\n", addr);
return false;
case UC_MEM_WRITE_PROT:
printf("not ok - Write to non-writeable memory at 0x%"PRIx64 ", data size = %u, data value = 0x%"PRIx64 "\n", addr, size, value);
return false;
case UC_MEM_READ_PROT:
printf("not ok - Read from non-readable memory at 0x%"PRIx64 ", data size = %u\n", addr, size);
return false;
switch (type) {
default:
printf("not ok - UC_HOOK_MEM_INVALID type: %d at 0x%" PRIx64 "\n", type,
addr);
return false;
case UC_MEM_READ_UNMAPPED:
printf("not ok - Read from invalid memory at 0x%" PRIx64
", data size = %u\n",
addr, size);
return false;
case UC_MEM_WRITE_UNMAPPED:
printf("not ok - Write to invalid memory at 0x%" PRIx64
", data size = %u, data value = 0x%" PRIx64 "\n",
addr, size, value);
return false;
case UC_MEM_FETCH_PROT:
printf("not ok - Fetch from non-executable memory at 0x%" PRIx64 "\n",
addr);
return false;
case UC_MEM_WRITE_PROT:
printf("not ok - Write to non-writeable memory at 0x%" PRIx64
", data size = %u, data value = 0x%" PRIx64 "\n",
addr, size, value);
return false;
case UC_MEM_READ_PROT:
printf("not ok - Read from non-readable memory at 0x%" PRIx64
", data size = %u\n",
addr, size);
return false;
}
}
@ -107,7 +127,8 @@ static void do_nx_demo(bool cause_fault)
insts_executed = 0;
printf("===================================\n");
printf("# Example of marking memory NX (%s)\n", cause_fault ? "faulting" : "non-faulting");
printf("# Example of marking memory NX (%s)\n",
cause_fault ? "faulting" : "non-faulting");
// Initialize emulator in X86-32bit mode
err = uc_open(UC_ARCH_X86, UC_MODE_32, &uc);
@ -129,14 +150,16 @@ static void do_nx_demo(bool cause_fault)
page2: @2000
jmp page1
*/
memset(code_buf, 0x40, sizeof(code_buf)); // fill with inc eax
memcpy(code_buf + 0x1000 - 5, "\xe9\x00\x10\x00\x00", 5); // jump to 0x102000
memset(code_buf, 0x40, sizeof(code_buf)); // fill with inc eax
memcpy(code_buf + 0x1000 - 5, "\xe9\x00\x10\x00\x00",
5); // jump to 0x102000
memcpy(code_buf + 0x2000, "\xe9\xfb\xef\xff\xff", 5); // jump to 0x101000
code_buf[0x1fff] = 0xf4; //hlt
code_buf[0x1fff] = 0xf4; // hlt
if (cause_fault) {
// insert instruction to trigger U_PROT_EXEC change (see hook_code function)
code_buf[0x1000] = 0x41; // inc ecx at page1
// insert instruction to trigger U_PROT_EXEC change (see hook_code
// function)
code_buf[0x1000] = 0x41; // inc ecx at page1
}
// write machine code to be emulated to memory
@ -146,9 +169,10 @@ static void do_nx_demo(bool cause_fault)
}
// intercept code and invalid memory events
if (uc_hook_add(uc, &trace2, UC_HOOK_CODE, hook_code, NULL, 1, 0) != UC_ERR_OK ||
uc_hook_add(uc, &trace1, UC_HOOK_MEM_INVALID,
hook_mem_invalid, NULL, 1, 0) != UC_ERR_OK) {
if (uc_hook_add(uc, &trace2, UC_HOOK_CODE, hook_code, NULL, 1, 0) !=
UC_ERR_OK ||
uc_hook_add(uc, &trace1, UC_HOOK_MEM_INVALID, hook_mem_invalid, NULL, 1,
0) != UC_ERR_OK) {
printf("not ok - Failed to install hooks\n");
return;
}
@ -157,7 +181,8 @@ static void do_nx_demo(bool cause_fault)
printf("BEGINNING EXECUTION\n");
err = uc_emu_start(uc, 0x100000, 0x103000, 0, 0);
if (err != UC_ERR_OK) {
printf("not ok - Failure on uc_emu_start() with error %u: %s\n", err, uc_strerror(err));
printf("not ok - Failure on uc_emu_start() with error %u: %s\n", err,
uc_strerror(err));
printf("FAILED EXECUTION\n");
} else {
printf("SUCCESSFUL EXECUTION\n");
@ -212,11 +237,12 @@ static void do_perms_demo(bool change_perms)
*/
memcpy(code_buf, WRITE_DEMO, sizeof(WRITE_DEMO) - 1);
memset(code_buf + sizeof(WRITE_DEMO) - 1, 0x90, 1000);
code_buf[sizeof(WRITE_DEMO) - 1 + 1000] = 0xf4; // hlt
code_buf[sizeof(WRITE_DEMO) - 1 + 1000] = 0xf4; // hlt
if (change_perms) {
// write protect memory area [0x101000, 0x101fff]. see hook_code function
code_buf[0] = 0x41; // inc ecx
// write protect memory area [0x101000, 0x101fff]. see hook_code
// function
code_buf[0] = 0x41; // inc ecx
}
// write machine code to be emulated to memory
@ -226,10 +252,10 @@ static void do_perms_demo(bool change_perms)
}
// intercept code and invalid memory events
if (uc_hook_add(uc, &trace2, UC_HOOK_CODE, hook_code, NULL, 1, 0) != UC_ERR_OK ||
uc_hook_add(uc, &trace1,
UC_HOOK_MEM_INVALID,
hook_mem_invalid, NULL, 1, 0) != UC_ERR_OK) {
if (uc_hook_add(uc, &trace2, UC_HOOK_CODE, hook_code, NULL, 1, 0) !=
UC_ERR_OK ||
uc_hook_add(uc, &trace1, UC_HOOK_MEM_INVALID, hook_mem_invalid, NULL, 1,
0) != UC_ERR_OK) {
printf("not ok - Failed to install hooks\n");
return;
}
@ -239,7 +265,8 @@ static void do_perms_demo(bool change_perms)
err = uc_emu_start(uc, 0x100000, 0x103000, 0, 0);
if (err != UC_ERR_OK) {
printf("FAILED EXECUTION\n");
printf("not ok - Failure on uc_emu_start() with error %u: %s\n", err, uc_strerror(err));
printf("not ok - Failure on uc_emu_start() with error %u: %s\n", err,
uc_strerror(err));
} else {
printf("SUCCESSFUL EXECUTION\n");
}
@ -253,11 +280,11 @@ static void perms_test()
{
printf("Permissions demo - step 1: show that area is writeable\n");
do_perms_demo(false);
printf("Permissions demo - step 2: show that code fails when memory marked unwriteable\n");
printf("Permissions demo - step 2: show that code fails when memory marked "
"unwriteable\n");
do_perms_demo(true);
}
static void do_unmap_demo(bool do_unmap)
{
uc_engine *uc;
@ -290,11 +317,11 @@ static void do_unmap_demo(bool do_unmap)
*/
memcpy(code_buf, WRITE_DEMO, sizeof(WRITE_DEMO) - 1);
memset(code_buf + sizeof(WRITE_DEMO) - 1, 0x90, 1000);
code_buf[sizeof(WRITE_DEMO) - 1 + 1000] = 0xf4; // hlt
code_buf[sizeof(WRITE_DEMO) - 1 + 1000] = 0xf4; // hlt
if (do_unmap) {
// unmap memory area [0x101000, 0x101fff]. see hook_code function
code_buf[0] = 0x42; // inc edx (see hook_code function)
code_buf[0] = 0x42; // inc edx (see hook_code function)
}
// write machine code to be emulated to memory
@ -304,10 +331,10 @@ static void do_unmap_demo(bool do_unmap)
}
// intercept code and invalid memory events
if (uc_hook_add(uc, &trace2, UC_HOOK_CODE, hook_code, NULL, 1, 0) != UC_ERR_OK ||
uc_hook_add(uc, &trace1,
UC_HOOK_MEM_INVALID,
hook_mem_invalid, NULL, 1, 0) != UC_ERR_OK) {
if (uc_hook_add(uc, &trace2, UC_HOOK_CODE, hook_code, NULL, 1, 0) !=
UC_ERR_OK ||
uc_hook_add(uc, &trace1, UC_HOOK_MEM_INVALID, hook_mem_invalid, NULL, 1,
0) != UC_ERR_OK) {
printf("not ok - Failed to install hooks\n");
return;
}
@ -317,7 +344,8 @@ static void do_unmap_demo(bool do_unmap)
err = uc_emu_start(uc, 0x100000, 0x103000, 0, 0);
if (err != UC_ERR_OK) {
printf("FAILED EXECUTION\n");
printf("not ok - Failure on uc_emu_start() with error %u: %s\n", err, uc_strerror(err));
printf("not ok - Failure on uc_emu_start() with error %u: %s\n", err,
uc_strerror(err));
} else {
printf("SUCCESSFUL EXECUTION\n");
}
@ -331,7 +359,8 @@ static void unmap_test()
{
printf("Unmap demo - step 1: show that area is writeable\n");
do_unmap_demo(false);
printf("Unmap demo - step 2: show that code fails when memory is unmapped\n");
printf(
"Unmap demo - step 2: show that code fails when memory is unmapped\n");
do_unmap_demo(true);
}