6b8c2968c1
This is an *experimental* (read: unstable) API which exposes encoding functionality as one function per instruction. This makes the encoding process itself significantly faster, at the cost of a much larger binary size (~1 MiB of code, no data) and much higher compilation time.
64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include <fadec-enc2.h>
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static
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void print_hex(const uint8_t* buf, size_t len) {
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for (size_t i = 0; i < len; i++)
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printf("%02x", buf[i]);
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}
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static int
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check(const uint8_t* buf, const void* exp, size_t exp_len, unsigned res, const char* name) {
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if (__builtin_expect(res == exp_len && !memcmp(buf, exp, exp_len), 1))
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return 0;
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printf("Failed case (new) %s:\n", name);
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printf(" Exp (%2zu): ", exp_len);
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print_hex((const uint8_t*)exp, exp_len);
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printf("\n Got (%2u): ", res);
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print_hex(buf, res);
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printf("\n");
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return -1;
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}
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#define TEST1(str, exp, name, ...) do { \
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memset(buf, 0, sizeof buf); \
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unsigned res = fe64_ ## name(buf, __VA_ARGS__); \
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failed |= check(buf, exp, sizeof(exp) - 1, res, str); \
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} while (0)
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#define TEST(exp, ...) TEST1(#__VA_ARGS__, exp, __VA_ARGS__)
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int
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main(void) {
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int failed = 0;
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uint8_t buf[16];
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// This API is type safe and prohibits compilation of reg-type mismatches
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#define ENC_TEST_TYPESAFE
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// Silence -Warray-bounds with double cast
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#define FE_PTR(off) (const void*) ((uintptr_t) buf + (off))
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#include "encode-test.inc"
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TEST("\x90", NOP, 0);
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TEST("\x90", NOP, 1);
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TEST("\x66\x90", NOP, 2);
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TEST("\x0f\x1f\x00", NOP, 3);
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TEST("\x0f\x1f\x40\x00", NOP, 4);
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TEST("\x0f\x1f\x44\x00\x00", NOP, 5);
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TEST("\x66\x0f\x1f\x44\x00\x00", NOP, 6);
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TEST("\x0f\x1f\x80\x00\x00\x00\x00", NOP, 7);
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TEST("\x0f\x1f\x84\x00\x00\x00\x00\x00", NOP, 8);
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TEST("\x66\x0f\x1f\x84\x00\x00\x00\x00\x00", NOP, 9);
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TEST("\x66\x0f\x1f\x84\x00\x00\x00\x00\x00\x90", NOP, 10);
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TEST("\x66\x0f\x1f\x84\x00\x00\x00\x00\x00\x66\x90", NOP, 11);
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TEST("\x66\x0f\x1f\x84\x00\x00\x00\x00\x00\x0f\x1f\x00", NOP, 12);
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puts(failed ? "Some tests FAILED" : "All tests PASSED");
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return failed ? EXIT_FAILURE : EXIT_SUCCESS;
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}
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