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Fix mmio unmap

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This commit is contained in:
lazymio
2021-11-24 00:18:19 +01:00
parent 4ed1c4cff9
commit 78e0ddbc4d
4 changed files with 122 additions and 11 deletions
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33
tests/unit/test_mem.c
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@ -74,15 +74,46 @@ static void test_splitting_mem_unmap()
OK(uc_close(uc));
}
static uint64_t test_splitting_mmio_unmap_read_callback(uc_engine *uc,
uint64_t offset,
unsigned size,
void *user_data)
{
TEST_CHECK(offset == 4);
TEST_CHECK(size == 4);
return 0x19260817;
}
static void test_splitting_mmio_unmap()
{
uc_engine *uc;
// mov ecx, [0x3004] <-- normal read
// mov ebx, [0x4004] <-- mmio read
char code[] = "\x8b\x0d\x04\x30\x00\x00\x8b\x1d\x04\x40\x00\x00";
int r_ecx, r_ebx;
int bytes = 0xdeadbeef;
OK(uc_open(UC_ARCH_X86, UC_MODE_32, &uc));
OK(uc_mmio_map(uc, 0x3000, 0x2000, NULL, NULL, NULL, NULL));
OK(uc_mem_map(uc, 0x1000, 0x1000, UC_PROT_ALL));
OK(uc_mem_write(uc, 0x1000, code, sizeof(code) - 1));
OK(uc_mmio_map(uc, 0x3000, 0x2000, test_splitting_mmio_unmap_read_callback,
NULL, NULL, NULL));
// Map a ram area instead
OK(uc_mem_unmap(uc, 0x3000, 0x1000));
OK(uc_mem_map(uc, 0x3000, 0x1000, UC_PROT_ALL));
OK(uc_mem_write(uc, 0x3004, &bytes, 4));
OK(uc_emu_start(uc, 0x1000, 0x1000 + sizeof(code) - 1, 0, 0));
OK(uc_reg_read(uc, UC_X86_REG_ECX, &r_ecx));
OK(uc_reg_read(uc, UC_X86_REG_EBX, &r_ebx));
TEST_CHECK(r_ecx == 0xdeadbeef);
TEST_CHECK(r_ebx == 0x19260817);
OK(uc_close(uc));
}