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Make dyld_chained_ptr_* parsing endian-independent
Fixes test/db/cmd/cmd_tc on big endian
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,84 @@ | ||
| // SPDX-FileCopyrightText: 2022 Florian Märkl <info@florianmaerkl.de> | ||
| // SPDX-License-Identifier: LGPL-3.0-only | ||
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| #include <rz_util.h> | ||
| #include "../../librz/bin/format/mach0/mach0_defines.h" | ||
| #include "minunit.h" | ||
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| /* | ||
| * In real dyld, the dyld_chained_ptr_* structs are parsed by simply | ||
| * reinterpreting a 64bit value as the respective bitfield struct. This of | ||
| * course only works on little endian hosts, but we want to be | ||
| * endian-independent, so we define or own readers. | ||
| * The tests below compare the output of our readers against the dyld-style | ||
| * reinterpretation to make sure we are parsing correctly. For adding tests for | ||
| * a new struct, simply add a TEST_READ_DEF(...) and | ||
| * mu_run_test(test_dyld_chained_..._read); line. | ||
| */ | ||
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| #if !RZ_SYS_ENDIAN | ||
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| #define SAMPLES 10000 | ||
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| static ut64 rand_ut64() { | ||
| ut64 r = 0; | ||
| for (int i = 0; i < 8; i++) { | ||
| r = (rand() % 0xff) | (r << 8); | ||
| } | ||
| return r; | ||
| } | ||
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| #define TEST_READ_DEF(name) \ | ||
| bool test_##name##_read() { \ | ||
| RZ_STATIC_ASSERT(sizeof(struct name) == sizeof(ut64)); \ | ||
| for (int i = 0; i < SAMPLES; i++) { \ | ||
| ut64 raw_val = rand_ut64(); /* this is the value we want to parse */ \ | ||
| \ | ||
| /* Parse with our endian-independent function */ \ | ||
| struct name s; \ | ||
| ut64 *s_direct = (ut64 *)&s; \ | ||
| *s_direct = rand_ut64(); /* init with garbage */ \ | ||
| name##_read(&s, raw_val); \ | ||
| \ | ||
| /* Compare our parsed value against a direct copy into the struct. */ \ | ||
| /* This only works on little endian hosts! */ \ | ||
| if (*s_direct != raw_val) { /* manual check to avoid rz_strf below */ \ | ||
| char message[128]; \ | ||
| snprintf(message, sizeof(message), #name "_read(0x%" PFMT64x ")", raw_val); \ | ||
| mu_assert_eq(*s_direct, raw_val, message); \ | ||
| } \ | ||
| } \ | ||
| mu_end; \ | ||
| } | ||
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| TEST_READ_DEF(dyld_chained_ptr_arm64e_rebase) | ||
| TEST_READ_DEF(dyld_chained_ptr_arm64e_bind) | ||
| TEST_READ_DEF(dyld_chained_ptr_arm64e_auth_rebase) | ||
| TEST_READ_DEF(dyld_chained_ptr_arm64e_auth_bind) | ||
| TEST_READ_DEF(dyld_chained_ptr_64_rebase) | ||
| TEST_READ_DEF(dyld_chained_ptr_64_bind) | ||
| TEST_READ_DEF(dyld_chained_ptr_arm64e_cache_rebase) | ||
| TEST_READ_DEF(dyld_chained_ptr_arm64e_cache_auth_rebase) | ||
| TEST_READ_DEF(dyld_chained_ptr_arm64e_bind24) | ||
| TEST_READ_DEF(dyld_chained_ptr_arm64e_auth_bind24) | ||
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| #endif | ||
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| bool all_tests() { | ||
| srand(time(0)); | ||
| #if !RZ_SYS_ENDIAN | ||
| mu_run_test(test_dyld_chained_ptr_arm64e_rebase_read); | ||
| mu_run_test(test_dyld_chained_ptr_arm64e_bind_read); | ||
| mu_run_test(test_dyld_chained_ptr_arm64e_auth_rebase_read); | ||
| mu_run_test(test_dyld_chained_ptr_arm64e_auth_bind_read); | ||
| mu_run_test(test_dyld_chained_ptr_64_rebase_read); | ||
| mu_run_test(test_dyld_chained_ptr_64_bind_read); | ||
| mu_run_test(test_dyld_chained_ptr_arm64e_cache_rebase_read); | ||
| mu_run_test(test_dyld_chained_ptr_arm64e_cache_auth_rebase_read); | ||
| mu_run_test(test_dyld_chained_ptr_arm64e_bind24_read); | ||
| mu_run_test(test_dyld_chained_ptr_arm64e_auth_bind24_read); | ||
| #endif | ||
| return tests_passed != tests_run; | ||
| } | ||
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| mu_main(all_tests) |