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| author | Bastien Roucariès <rouca@debian.org> | 2024-05-06 19:17:23 +0000 |
|---|---|---|
| committer | Bastien Roucariès <rouca@debian.org> | 2024-05-06 19:17:23 +0000 |
| commit | 0d1d760b90dfe26145b7c4e4cd0de55117bcdbbb (patch) | |
| tree | a66ff512cd9be70de19d8983a2a04b9a1d03da6b /include/compiler.h | |
| parent | ee3097c3f96727fdb41e36d93b6c957d281da97e (diff) | |
| parent | a075e58606b9affb6dfb176c71caab816737a981 (diff) | |
| download | efi-boot-shim-0d1d760b90dfe26145b7c4e4cd0de55117bcdbbb.tar.gz efi-boot-shim-0d1d760b90dfe26145b7c4e4cd0de55117bcdbbb.zip | |
Merge tag 'upstream/15.8' into buster/updates
Upstream version 15.8
Diffstat (limited to 'include/compiler.h')
| -rw-r--r-- | include/compiler.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/compiler.h b/include/compiler.h index b0d595f3..8e8a658d 100644 --- a/include/compiler.h +++ b/include/compiler.h @@ -198,5 +198,55 @@ #error shim has no cache_invalidate() implementation for this compiler #endif /* __GNUC__ */ +#if defined(__GNUC__) && defined(__GNUC_MINOR__) +#define GNUC_PREREQ(maj, min) \ + ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) +#else +#define GNUC_PREREQ(maj, min) 0 +#endif + +#if defined(__clang__) && defined(__clang_major__) && defined(__clang_minor__) +#define CLANG_PREREQ(maj, min) \ + ((__clang_major__ > (maj)) || \ + (__clang_major__ == (maj) && __clang_minor__ >= (min))) +#else +#define CLANG_PREREQ(maj, min) 0 +#endif + +#if GNUC_PREREQ(5, 1) || CLANG_PREREQ(3, 8) +#define checked_add(addend0, addend1, sum) \ + __builtin_add_overflow(addend0, addend1, sum) +#define checked_sub(minuend, subtrahend, difference) \ + __builtin_sub_overflow(minuend, subtrahend, difference) +#define checked_mul(factor0, factor1, product) \ + __builtin_mul_overflow(factor0, factor1, product) +#else +#define checked_add(a0, a1, s) \ + ({ \ + (*s) = ((a0) + (a1)); \ + 0; \ + }) +#define checked_sub(s0, s1, d) \ + ({ \ + (*d) = ((s0) - (s1)); \ + 0; \ + }) +#define checked_mul(f0, f1, p) \ + ({ \ + (*p) = ((f0) * (f1)); \ + 0; \ + }) +#endif + +#define checked_div(dividend, divisor, quotient) \ + ({ \ + bool _ret = True; \ + if ((divisor) != 0) { \ + _ret = False; \ + (quotient) = (dividend) / (divisor); \ + } \ + _ret; \ + }) + #endif /* !COMPILER_H_ */ // vim:fenc=utf-8:tw=75:et |