mirror of
https://github.com/yuzu-emu/unicorn
synced 2024-11-24 10:38:18 +00:00
308 lines
8.5 KiB
C
308 lines
8.5 KiB
C
#include <stdint.h>
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#include "unicorn_test.h"
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#define OK(x) uc_assert_success(x)
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#define CF_MASK (1<<0)
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#define PF_MASK (1<<2)
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#define ZF_MASK (1<<6)
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#define SF_MASK (1<<7)
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#define OF_MASK (1<<11)
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#define ALL_MASK (OF_MASK|SF_MASK|ZF_MASK|PF_MASK|CF_MASK)
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#define NO_MASK 0xFFFFFFFF
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typedef struct _reg_value
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{
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uint32_t regId, regValue, mask;
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} reg_value;
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typedef struct _instruction
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{
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const char* asmStr;
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const uint8_t* code;
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uint32_t codeSize;
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const reg_value* values;
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uint32_t nbValues;
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} instruction;
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typedef struct _block
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{
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instruction* insts[255];
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uint32_t nbInsts;
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uint32_t size;
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} block;
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typedef struct _exec_state
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{
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uint32_t curr;
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block* block;
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} exec_state;
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/******************************************************************************/
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#define CAT2(X, Y) X ## Y
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#define CAT(X, Y) CAT2(X, Y)
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#define ADD_INSTRUCTION(BLOCK, CODE_ASM, CODE, REGVALUES) \
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const uint8_t CAT(code, __LINE__)[] = CODE; \
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const reg_value CAT(regValues, __LINE__)[] = REGVALUES; \
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inst = newInstruction(CAT(code, __LINE__), sizeof(CAT(code, __LINE__)), CODE_ASM, CAT(regValues, __LINE__), sizeof(CAT(regValues, __LINE__)) / sizeof(reg_value)); \
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addInstructionToBlock(BLOCK, inst);
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#define V(...) { __VA_ARGS__ }
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/******************************************************************************/
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instruction* newInstruction(const uint8_t * _code, uint32_t _codeSize, const char* _asmStr, const reg_value* _values, uint32_t _nbValues);
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void addInstructionToBlock(block* _b, instruction* _i);
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uint32_t loadBlock(uc_engine *_uc, block* _block, uint32_t _at);
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void freeBlock(block* _block);
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const char* getRegisterName(uint32_t _regid);
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uint32_t getRegisterValue(uc_engine *uc, uint32_t _regid);
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/******************************************************************************/
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void hook_code_test_i386_shl(uc_engine *uc, uint64_t address, uint32_t size, void *user_data)
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{
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uint32_t i;
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exec_state* es = (exec_state*)user_data;
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instruction* currInst = es->block->insts[es->curr];
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print_message("|\teip=%08x - %s\n", (uint32_t)address, es->block->insts[es->curr]->asmStr);
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for (i = 0; i < currInst->nbValues; i++)
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{
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if (currInst->values[i].regId == UC_X86_REG_INVALID) continue;
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uint32_t regValue = getRegisterValue(uc, currInst->values[i].regId);
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print_message("|\t\ttesting %s : ", getRegisterName(currInst->values[i].regId));
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assert_int_equal(regValue & currInst->values[i].mask, currInst->values[i].regValue);
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print_message("ok\n");
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}
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es->curr++;
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if (es->curr >= es->block->nbInsts)
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{
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print_message("stopping emulation\n");
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uc_emu_stop(uc);
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}
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}
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#define ADDR_START 0x100000
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static void test_i386_shl_prob(void **state)
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{
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uc_engine *uc;
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uc_hook trace1;
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// Initialize emulator in X86-32bit mode
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OK(uc_open(UC_ARCH_X86, UC_MODE_32, &uc));
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OK(uc_mem_map(uc, ADDR_START, 0x1000, UC_PROT_ALL));
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{
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exec_state es;
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block block_shl_prob;
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instruction* inst;
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es.curr = 0;
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es.block = &block_shl_prob;
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block_shl_prob.nbInsts = 0;
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ADD_INSTRUCTION(&block_shl_prob, "mov ebx, 3Ch", V(0xBB, 0x3C, 0x00, 0x00, 0x00), V(V(UC_X86_REG_INVALID, 0x0, NO_MASK)));
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ADD_INSTRUCTION(&block_shl_prob, "mov cl, 2", V(0xB1, 0x02), V(V(UC_X86_REG_EBX, 0x3C, NO_MASK)));
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ADD_INSTRUCTION(&block_shl_prob, "shl ebx, cl", V(0xD3, 0xE3), V(V(UC_X86_REG_EBX, 0x3C, NO_MASK), V(UC_X86_REG_CL, 0x2, NO_MASK)));
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ADD_INSTRUCTION(&block_shl_prob, "lahf", V(0x9F), V(V(UC_X86_REG_EBX, 0xF0, NO_MASK), V(UC_X86_REG_CL, 0x2, NO_MASK), V(UC_X86_REG_EFLAGS, 0x4, ALL_MASK)));
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ADD_INSTRUCTION(&block_shl_prob, "int3", V(0xCC), V(V(UC_X86_REG_AH, 0x4, PF_MASK), V(UC_X86_REG_EBX, 0xF0, NO_MASK), V(UC_X86_REG_CL, 0x2, NO_MASK), V(UC_X86_REG_EFLAGS, 0x4, ALL_MASK)));
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loadBlock(uc, &block_shl_prob, ADDR_START);
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// initialize machine registers
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uint32_t zero = 0;
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OK(uc_reg_write(uc, UC_X86_REG_EAX, &zero));
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OK(uc_reg_write(uc, UC_X86_REG_EBX, &zero));
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OK(uc_reg_write(uc, UC_X86_REG_ECX, &zero));
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OK(uc_reg_write(uc, UC_X86_REG_EDX, &zero));
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OK(uc_hook_add(uc, &trace1, UC_HOOK_CODE, hook_code_test_i386_shl, &es, 1, 0));
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// emulate machine code in infinite time
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OK(uc_emu_start(uc, ADDR_START, ADDR_START + block_shl_prob.size - 1, 0, 0));
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freeBlock(&block_shl_prob);
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}
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uc_close(uc);
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}
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static void test_i386_shl_ok(void **state)
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{
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uc_engine *uc;
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uc_hook trace1;
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// Initialize emulator in X86-32bit mode
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OK(uc_open(UC_ARCH_X86, UC_MODE_32, &uc));
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OK(uc_mem_map(uc, ADDR_START, 0x1000, UC_PROT_ALL));
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{
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exec_state es;
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block block_shl_ok;
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instruction* inst;
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es.curr = 0;
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es.block = &block_shl_ok;
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block_shl_ok.nbInsts = 0;
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ADD_INSTRUCTION(&block_shl_ok, "mov ebx, 3Ch", V(0xBB, 0x3C, 0x00, 0x00, 0x00), V(V(UC_X86_REG_INVALID, 0x0, NO_MASK)));
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ADD_INSTRUCTION(&block_shl_ok, "shl ebx, 2", V(0xC1, 0xE3, 0x02), V(V(UC_X86_REG_EBX, 0x3C, NO_MASK)));
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ADD_INSTRUCTION(&block_shl_ok, "lahf", V(0x9F), V(V(UC_X86_REG_EBX, 0xF0, NO_MASK), V(UC_X86_REG_EFLAGS, 0x4, ALL_MASK)));
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ADD_INSTRUCTION(&block_shl_ok, "int3", V(0xCC), V(V(UC_X86_REG_AH, 0x4, PF_MASK), V(UC_X86_REG_EBX, 0xF0, NO_MASK), V(UC_X86_REG_EFLAGS, 0x4, ALL_MASK)));
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loadBlock(uc, &block_shl_ok, ADDR_START);
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// initialize machine registers
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uint32_t zero = 0;
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OK(uc_reg_write(uc, UC_X86_REG_EAX, &zero));
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OK(uc_reg_write(uc, UC_X86_REG_EBX, &zero));
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OK(uc_reg_write(uc, UC_X86_REG_ECX, &zero));
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OK(uc_reg_write(uc, UC_X86_REG_EDX, &zero));
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OK(uc_hook_add(uc, &trace1, UC_HOOK_CODE, hook_code_test_i386_shl, &es, 1, 0));
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// emulate machine code in infinite time
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OK(uc_emu_start(uc, ADDR_START, ADDR_START + block_shl_ok.size - 1, 0, 0));
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freeBlock(&block_shl_ok);
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}
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uc_close(uc);
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}
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/******************************************************************************/
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int main(void) {
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const struct CMUnitTest tests[] = {
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cmocka_unit_test(test_i386_shl_prob),
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cmocka_unit_test(test_i386_shl_ok),
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};
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return cmocka_run_group_tests(tests, NULL, NULL);
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}
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/******************************************************************************/
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instruction* newInstruction(const uint8_t * _code, uint32_t _codeSize, const char* _asmStr, const reg_value* _values, uint32_t _nbValues)
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{
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instruction* inst = (instruction*)malloc(sizeof(instruction));
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inst->asmStr = _asmStr;
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inst->code = _code;
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inst->codeSize = _codeSize;
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inst->values = _values;
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inst->nbValues = _nbValues;
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return inst;
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}
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void addInstructionToBlock(block* _b, instruction* _i)
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{
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_b->insts[_b->nbInsts++] = _i;
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}
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uint32_t loadBlock(uc_engine *_uc, block* _block, uint32_t _at)
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{
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uint32_t i, offset;
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for (i = 0, offset = 0; i < _block->nbInsts; i++)
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{
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OK(uc_mem_write(_uc, _at + offset, _block->insts[i]->code, _block->insts[i]->codeSize));
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offset += _block->insts[i]->codeSize;
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}
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_block->size = offset;
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return offset;
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}
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void freeBlock(block* _block)
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{
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uint32_t i;
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for (i = 0; i < _block->nbInsts; i++)
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free(_block->insts[i]);
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}
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const char* getRegisterName(uint32_t _regid)
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{
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switch (_regid)
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{
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//8
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case UC_X86_REG_AH: return "AH";
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case UC_X86_REG_AL: return "AL";
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case UC_X86_REG_BH: return "BH";
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case UC_X86_REG_BL: return "BL";
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case UC_X86_REG_CL: return "CL";
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case UC_X86_REG_CH: return "CH";
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case UC_X86_REG_DH: return "DH";
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case UC_X86_REG_DL: return "DL";
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//16
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case UC_X86_REG_AX: return "AX";
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case UC_X86_REG_BX: return "BX";
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case UC_X86_REG_CX: return "CX";
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case UC_X86_REG_DX: return "DX";
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//32
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case UC_X86_REG_EAX: return "EAX";
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case UC_X86_REG_EBX: return "EBX";
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case UC_X86_REG_ECX: return "ECX";
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case UC_X86_REG_EDX: return "EDX";
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case UC_X86_REG_EDI: return "EDI";
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case UC_X86_REG_ESI: return "ESI";
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case UC_X86_REG_EBP: return "EBP";
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case UC_X86_REG_ESP: return "ESP";
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case UC_X86_REG_EIP: return "EIP";
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case UC_X86_REG_EFLAGS: return "EFLAGS";
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default: fail();
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}
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return "UNKNOWN";
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}
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uint32_t getRegisterValue(uc_engine *uc, uint32_t _regid)
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{
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switch (_regid)
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{
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//8
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case UC_X86_REG_AH: case UC_X86_REG_AL:
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case UC_X86_REG_BH: case UC_X86_REG_BL:
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case UC_X86_REG_CL: case UC_X86_REG_CH:
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case UC_X86_REG_DH: case UC_X86_REG_DL:
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{
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uint8_t val = 0;
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uc_reg_read(uc, _regid, &val);
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return val;
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}
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//16
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case UC_X86_REG_AX: case UC_X86_REG_BX:
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case UC_X86_REG_CX: case UC_X86_REG_DX:
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{
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uint16_t val = 0;
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uc_reg_read(uc, _regid, &val);
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return val;
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}
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//32
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case UC_X86_REG_EAX: case UC_X86_REG_EBX:
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case UC_X86_REG_ECX: case UC_X86_REG_EDX:
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case UC_X86_REG_EDI: case UC_X86_REG_ESI:
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case UC_X86_REG_EBP: case UC_X86_REG_ESP:
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case UC_X86_REG_EIP: case UC_X86_REG_EFLAGS:
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{
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uint32_t val = 0;
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uc_reg_read(uc, _regid, &val);
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return val;
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}
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default: fail();
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}
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return 0;
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}
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