mirror of
https://github.com/yuzu-emu/unicorn.git
synced 2024-12-24 12:25:36 +00:00
128 lines
3.4 KiB
C
128 lines
3.4 KiB
C
#include "unicorn_test.h"
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#include <unicorn/unicorn.h>
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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static void test_idt_gdt_i386(/*void **state*/)
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{
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uc_engine *uc;
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uc_err err;
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uint8_t buf[6];
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uc_x86_mmr idt;
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uc_x86_mmr gdt;
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uc_x86_mmr ldt;
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uc_x86_mmr tr;
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struct stat info;
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char * code = read_file("gdt_idx.bin", &info);
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const uint64_t address = 0x1000000;
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int r_esp = address + 0x1000 - 0x100; // initial esp
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idt.base = 0x12345678;
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idt.limit = 0xabcd;
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gdt.base = 0x87654321;
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gdt.limit = 0xdcba;
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ldt.base = 0xfedcba98;
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ldt.limit = 0x11111111;
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ldt.selector = 0x3333;
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ldt.flags = 0x55555555;
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tr.base = 0x22222222;
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tr.limit = 0x33333333;
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tr.selector = 0x4444;
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tr.flags = 0x66666666;
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// Initialize emulator in X86-32bit mode
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err = uc_open(UC_ARCH_X86, UC_MODE_32, &uc);
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uc_assert_success(err);
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// map 1 page memory for this emulation
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err = uc_mem_map(uc, address, 0x1000, UC_PROT_ALL);
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uc_assert_success(err);
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// write machine code to be emulated to memory
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err = uc_mem_write(uc, address, code, info.st_size);
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uc_assert_success(err);
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// initialize machine registers
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err = uc_reg_write(uc, UC_X86_REG_ESP, &r_esp);
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uc_assert_success(err);
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err = uc_reg_write(uc, UC_X86_REG_IDTR, &idt);
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uc_assert_success(err);
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err = uc_reg_write(uc, UC_X86_REG_GDTR, &gdt);
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uc_assert_success(err);
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err = uc_reg_write(uc, UC_X86_REG_LDTR, &ldt);
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uc_assert_success(err);
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err = uc_reg_write(uc, UC_X86_REG_TR, &tr);
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uc_assert_success(err);
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memset(&idt, 0, sizeof(idt));
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memset(&gdt, 0, sizeof(gdt));
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memset(&ldt, 0, sizeof(ldt));
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memset(&tr, 0, sizeof(tr));
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// emulate machine code in infinite time
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err = uc_emu_start(uc, address, address+sizeof(code)-1, 0, 0);
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uc_assert_success(err);
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uc_reg_read(uc, UC_X86_REG_IDTR, &idt);
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assert(idt.base == 0x12345678);
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assert(idt.limit == 0xabcd);
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uc_reg_read(uc, UC_X86_REG_GDTR, &gdt);
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assert(gdt.base == 0x87654321);
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assert(gdt.limit == 0xdcba);
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//userspace can only set ldt selector, remainder are loaded from
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//GDT/LDT, but we allow all to emulator user
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uc_reg_read(uc, UC_X86_REG_LDTR, &ldt);
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assert(ldt.base == 0xfedcba98);
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assert(ldt.limit == 0x11111111);
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assert(ldt.selector == 0x3333);
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assert(ldt.flags == 0x55555555);
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//userspace can only set tr selector, remainder are loaded from
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//GDT/LDT, but we allow all to emulator user
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uc_reg_read(uc, UC_X86_REG_TR, &tr);
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assert(tr.base == 0x22222222);
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assert(tr.limit == 0x33333333);
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assert(tr.selector == 0x4444);
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assert(tr.flags == 0x66666666);
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// read from memory
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err = uc_mem_read(uc, r_esp, buf, 6);
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uc_assert_success(err);
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assert(memcmp(buf, "\xcd\xab\x78\x56\x34\x12", 6) == 0);
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// read from memory
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err = uc_mem_read(uc, r_esp + 6, buf, 6);
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uc_assert_success(err);
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assert(memcmp(buf, "\xba\xdc\x21\x43\x65\x87", 6) == 0);
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uc_close(uc);
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free(code);
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}
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/******************************************************************************/
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int main(void) {
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/*
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const struct CMUnitTest tests[] = {
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cmocka_unit_test(test_idt_gdt_i386)
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};
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return cmocka_run_group_tests(tests, NULL, NULL);
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*/
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test_idt_gdt_i386();
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fprintf(stderr, "success\n");
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return 0;
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}
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