mirror of
https://github.com/yuzu-emu/unicorn.git
synced 2024-12-23 19:15:34 +00:00
128 lines
3.4 KiB
C
128 lines
3.4 KiB
C
#include "unicorn_test.h"
|
|
#include <unicorn/unicorn.h>
|
|
#include <assert.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
static void test_idt_gdt_i386(/*void **state*/)
|
|
{
|
|
uc_engine *uc;
|
|
uc_err err;
|
|
uint8_t buf[6];
|
|
uc_x86_mmr idt;
|
|
uc_x86_mmr gdt;
|
|
uc_x86_mmr ldt;
|
|
uc_x86_mmr tr;
|
|
|
|
struct stat info;
|
|
char * code = read_file("gdt_idx.bin", &info);
|
|
|
|
const uint64_t address = 0x1000000;
|
|
|
|
int r_esp = address + 0x1000 - 0x100; // initial esp
|
|
|
|
idt.base = 0x12345678;
|
|
idt.limit = 0xabcd;
|
|
gdt.base = 0x87654321;
|
|
gdt.limit = 0xdcba;
|
|
|
|
ldt.base = 0xfedcba98;
|
|
ldt.limit = 0x11111111;
|
|
ldt.selector = 0x3333;
|
|
ldt.flags = 0x55555555;
|
|
|
|
tr.base = 0x22222222;
|
|
tr.limit = 0x33333333;
|
|
tr.selector = 0x4444;
|
|
tr.flags = 0x66666666;
|
|
|
|
// Initialize emulator in X86-32bit mode
|
|
err = uc_open(UC_ARCH_X86, UC_MODE_32, &uc);
|
|
uc_assert_success(err);
|
|
|
|
// map 1 page memory for this emulation
|
|
err = uc_mem_map(uc, address, 0x1000, UC_PROT_ALL);
|
|
uc_assert_success(err);
|
|
|
|
// write machine code to be emulated to memory
|
|
err = uc_mem_write(uc, address, code, info.st_size);
|
|
uc_assert_success(err);
|
|
|
|
// initialize machine registers
|
|
err = uc_reg_write(uc, UC_X86_REG_ESP, &r_esp);
|
|
uc_assert_success(err);
|
|
err = uc_reg_write(uc, UC_X86_REG_IDTR, &idt);
|
|
uc_assert_success(err);
|
|
err = uc_reg_write(uc, UC_X86_REG_GDTR, &gdt);
|
|
uc_assert_success(err);
|
|
err = uc_reg_write(uc, UC_X86_REG_LDTR, &ldt);
|
|
uc_assert_success(err);
|
|
err = uc_reg_write(uc, UC_X86_REG_TR, &tr);
|
|
uc_assert_success(err);
|
|
|
|
memset(&idt, 0, sizeof(idt));
|
|
memset(&gdt, 0, sizeof(gdt));
|
|
memset(&ldt, 0, sizeof(ldt));
|
|
memset(&tr, 0, sizeof(tr));
|
|
|
|
// emulate machine code in infinite time
|
|
err = uc_emu_start(uc, address, address+sizeof(code)-1, 0, 0);
|
|
uc_assert_success(err);
|
|
|
|
|
|
uc_reg_read(uc, UC_X86_REG_IDTR, &idt);
|
|
assert(idt.base == 0x12345678);
|
|
assert(idt.limit == 0xabcd);
|
|
|
|
uc_reg_read(uc, UC_X86_REG_GDTR, &gdt);
|
|
assert(gdt.base == 0x87654321);
|
|
assert(gdt.limit == 0xdcba);
|
|
|
|
//userspace can only set ldt selector, remainder are loaded from
|
|
//GDT/LDT, but we allow all to emulator user
|
|
uc_reg_read(uc, UC_X86_REG_LDTR, &ldt);
|
|
assert(ldt.base == 0xfedcba98);
|
|
assert(ldt.limit == 0x11111111);
|
|
assert(ldt.selector == 0x3333);
|
|
assert(ldt.flags == 0x55555555);
|
|
|
|
//userspace can only set tr selector, remainder are loaded from
|
|
//GDT/LDT, but we allow all to emulator user
|
|
uc_reg_read(uc, UC_X86_REG_TR, &tr);
|
|
assert(tr.base == 0x22222222);
|
|
assert(tr.limit == 0x33333333);
|
|
assert(tr.selector == 0x4444);
|
|
assert(tr.flags == 0x66666666);
|
|
|
|
// read from memory
|
|
err = uc_mem_read(uc, r_esp, buf, 6);
|
|
uc_assert_success(err);
|
|
|
|
assert(memcmp(buf, "\xcd\xab\x78\x56\x34\x12", 6) == 0);
|
|
|
|
// read from memory
|
|
err = uc_mem_read(uc, r_esp + 6, buf, 6);
|
|
uc_assert_success(err);
|
|
|
|
assert(memcmp(buf, "\xba\xdc\x21\x43\x65\x87", 6) == 0);
|
|
|
|
uc_close(uc);
|
|
free(code);
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
int main(void) {
|
|
/*
|
|
const struct CMUnitTest tests[] = {
|
|
cmocka_unit_test(test_idt_gdt_i386)
|
|
};
|
|
return cmocka_run_group_tests(tests, NULL, NULL);
|
|
*/
|
|
test_idt_gdt_i386();
|
|
|
|
fprintf(stderr, "success\n");
|
|
|
|
return 0;
|
|
}
|