mirror of
https://github.com/yuzu-emu/unicorn.git
synced 2024-10-19 04:18:16 +02:00
272 lines
7.2 KiB
C
272 lines
7.2 KiB
C
#include "unicorn/platform.h"
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#include "unicorn/platform.h"
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#include <unicorn/unicorn.h>
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#include "unicorn_test.h"
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/**
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* Initialize i386 Unicorn Instance
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*/
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static int setup_i386(void **state)
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{
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uc_engine *uc;
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uc_assert_success(uc_open(UC_ARCH_X86, UC_MODE_32, &uc));
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*state = uc;
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return 0;
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}
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/**
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* Initialize amd64 Unicorn Instance
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*/
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static int setup_amd64(void **state)
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{
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uc_engine *uc;
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uc_assert_success(uc_open(UC_ARCH_X86, UC_MODE_64, &uc));
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*state = uc;
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return 0;
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}
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/**
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* Shutdown a Unicorn Instance
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*/
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static int teardown(void **state)
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{
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uc_engine *uc = *state;
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uc_assert_success(uc_close(uc));
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*state = NULL;
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return 0;
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}
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/***********************************************************************************/
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typedef struct {
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bool good;
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uint64_t actual;
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uint64_t expected;
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} TestData;
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const uint64_t CodePage = 0x10000;
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const uint64_t CodeSize = 0x4000;
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/**
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* Hook for reading unmapped memory in the i386 Unicorn Instance.
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*
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* BUG: EIP from uc_reg_read does not match expected value.
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*/
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static bool mem_hook_i386(uc_engine *uc, uc_mem_type type,
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uint64_t address, int size, int64_t value, void *user_data)
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{
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TestData *data = user_data;
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if (type == UC_MEM_READ_UNMAPPED)
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{
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uint32_t eip;
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uint32_t eax;
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uc_reg_read(uc, UC_X86_REG_EIP, &eip);
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uc_reg_read(uc, UC_X86_REG_EAX, &eax);
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data->actual = eip;
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data->expected = CodePage + 0x05;
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/**
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* Code:
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* 0x10000: mov eax, 0x41414141 ;; <- Returned EIP
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* 0x10005: mov ecx, [eax] ;; <- Expected EIP
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*/
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if ((eax == 0x41414141) && // Proof we're at 0x10005.
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(eip != (CodePage + 0x5))) // Proof uc_reg_read is wrong
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{
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data->good = false;
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}
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else
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data->good = true;
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}
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return false;
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}
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/**
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* Hook for reading unmapped memory in the amd64 Unicorn Instance.
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*
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* BUG: RIP from uc_reg_read does not match expected value.
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*/
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static bool mem_hook_amd64(uc_engine *uc, uc_mem_type type,
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uint64_t address, int size, int64_t value, void *user_data)
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{
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TestData *data = user_data;
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if (type == UC_MEM_READ_UNMAPPED)
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{
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uint64_t rip;
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uint64_t rax;
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uc_reg_read(uc, UC_X86_REG_RIP, &rip);
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uc_reg_read(uc, UC_X86_REG_RAX, &rax);
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data->actual = rip;
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data->expected = CodePage + 0x0A;
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/**
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* Code:
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* 0x10000: mov rax, 0x4141414141414141 ;; <- Returned RIP
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* 0x10005: mov rcx, [rax] ;; <- Expected RIP
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*/
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if ((rax == 0x4141414141414141) && // Proof we're at 0x10005
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(rip != (CodePage + 0xA))) // Proof uc_reg_read is wrong
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{
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data->good = false;
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}
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else
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data->good = true;
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}
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return false;
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}
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/**
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* Empty Code Hook.
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*/
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static void code_hook(uc_engine *uc, uint64_t addr, uint32_t size, void *user)
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{
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(void) uc;
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(void) addr;
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(void) size;
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(void) user;
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}
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/**
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* Test the bug for i386.
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*
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* 1. Map Code Page
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* 2. Write Code to page.
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* 3. Install Unmapped Read hook.
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* 4. Run the VM.
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*/
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static void test_i386(void **state)
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{
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TestData data;
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uc_engine *uc = *state;
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uc_hook trace1;
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const uint8_t i386_bug[] = {
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0xb8, 0x41, 0x41, 0x41, 0x41, // mov eax, 0x41414141
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0x8b, 0x08 // mov ecx, [eax]
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};
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uc_assert_success(uc_mem_map(uc, CodePage, CodeSize, UC_PROT_ALL));
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uc_assert_success(uc_mem_write(uc, CodePage, i386_bug, sizeof(i386_bug)));
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uc_assert_success(uc_hook_add(uc, &trace1, UC_HOOK_MEM_READ_UNMAPPED, mem_hook_i386, &data, 1, 0));
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uc_assert_fail(uc_emu_start(uc, CodePage, CodePage + sizeof(i386_bug), 0, 0));
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if (!data.good)
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fail_msg("De-synced RIP value. 0x%"PRIX64" != 0x%"PRIX64"\n", data.expected, data.actual);
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}
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/**
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* Test the bug for amd64..
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*
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* 1. Map Code Page
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* 2. Write Code to page.
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* 3. Install Unmapped Read hook.
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* 4. Run the VM.
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*/
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static void test_amd64(void **state)
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{
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TestData data;
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uc_engine *uc = *state;
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uc_hook trace1;
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const uint8_t amd64_bug[] = {
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0x48, 0xb8, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41,
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0x48, 0x8b, 0x08
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};
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uc_assert_success(uc_mem_map(uc, CodePage, CodeSize, UC_PROT_ALL));
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uc_assert_success(uc_mem_write(uc, CodePage, amd64_bug, sizeof(amd64_bug)));
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uc_assert_success(uc_hook_add(uc, &trace1, UC_HOOK_MEM_READ_UNMAPPED, mem_hook_amd64, &data, 1, 0));
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uc_assert_fail(uc_emu_start(uc, CodePage, CodePage + sizeof(amd64_bug), 0, 0));
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if (!data.good)
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fail_msg("De-synced RIP value. 0x%"PRIX64" != 0x%"PRIX64"\n", data.expected, data.actual);
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}
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/**
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* Test temporary fix for bug for i386.
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*
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* 1. Map Code Page
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* 2. Write Code to page.
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* 3. Install Unmapped Read hook.
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* 4. Install Code hook.
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* 5. Run the VM.
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*/
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static void test_i386_fix(void **state)
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{
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TestData data;
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uc_engine *uc = *state;
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uc_hook trace1, trace2;
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const uint8_t i386_bug[] = {
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0xb8, 0x41, 0x41, 0x41, 0x41, // mov eax, 0x41414141
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0x8b, 0x08 // mov ecx, [eax]
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};
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uc_assert_success(uc_mem_map(uc, CodePage, CodeSize, UC_PROT_ALL));
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uc_assert_success(uc_mem_write(uc, CodePage, i386_bug, sizeof(i386_bug)));
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uc_assert_success(uc_hook_add(uc, &trace1, UC_HOOK_MEM_READ_UNMAPPED, mem_hook_i386, &data, 1, 0));
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uc_assert_success(uc_hook_add(uc, &trace2, UC_HOOK_CODE, code_hook, NULL, 1, 0));
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uc_assert_fail(uc_emu_start(uc, CodePage, CodePage + sizeof(i386_bug), 0, 0));
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if (!data.good)
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fail_msg("De-synced RIP value. 0x%"PRIX64" != 0x%"PRIX64"\n", data.expected, data.actual);
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}
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/**
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* Test temporary fix for bug for amd64..
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*
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* 1. Map Code Page
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* 2. Write Code to page.
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* 3. Install Unmapped Read hook.
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* 4. Install Code hook.
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* 5. Run the VM.
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*/
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static void test_amd64_fix(void **state)
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{
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TestData data;
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uc_engine *uc = *state;
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uc_hook trace1, trace2;
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const uint8_t amd64_bug[] = {
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0x48, 0xb8, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41,
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0x48, 0x8b, 0x08
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};
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uc_assert_success(uc_mem_map(uc, CodePage, CodeSize, UC_PROT_ALL));
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uc_assert_success(uc_mem_write(uc, CodePage, amd64_bug, sizeof(amd64_bug)));
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uc_assert_success(uc_hook_add(uc, &trace1, UC_HOOK_MEM_READ_UNMAPPED, mem_hook_amd64, &data, 1, 0));
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uc_assert_success(uc_hook_add(uc, &trace2, UC_HOOK_CODE, code_hook, NULL, 1, 0));
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uc_assert_fail(uc_emu_start(uc, CodePage, CodePage + sizeof(amd64_bug), 0, 0));
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if (!data.good)
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fail_msg("De-synced RIP value. 0x%"PRIX64" != 0x%"PRIX64"\n", data.expected, data.actual);
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}
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/**
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* Run all tests
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*/
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int main(int argc, char **argv, char **envp)
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{
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const struct CMUnitTest tests[] = {
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cmocka_unit_test_setup_teardown(test_i386, setup_i386, teardown),
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cmocka_unit_test_setup_teardown(test_amd64, setup_amd64, teardown),
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cmocka_unit_test_setup_teardown(test_i386_fix, setup_i386, teardown),
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cmocka_unit_test_setup_teardown(test_amd64_fix, setup_amd64, teardown)
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};
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return cmocka_run_group_tests(tests, NULL, NULL);
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}
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