diff options
Diffstat (limited to 'src/compat')
| -rw-r--r-- | src/compat/glibc_compat.cpp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/compat/glibc_compat.cpp b/src/compat/glibc_compat.cpp index 55da5ef63f..b1cbe9f72a 100644 --- a/src/compat/glibc_compat.cpp +++ b/src/compat/glibc_compat.cpp @@ -7,6 +7,7 @@ #endif #include <cstddef> +#include <cstdint> #if defined(HAVE_SYS_SELECT_H) #include <sys/select.h> @@ -27,3 +28,47 @@ extern "C" FDELT_TYPE __fdelt_warn(FDELT_TYPE a) return a / __NFDBITS; } extern "C" FDELT_TYPE __fdelt_chk(FDELT_TYPE) __attribute__((weak, alias("__fdelt_warn"))); + +#if defined(__i386__) || defined(__arm__) + +extern "C" int64_t __udivmoddi4(uint64_t u, uint64_t v, uint64_t* rp); + +extern "C" int64_t __wrap___divmoddi4(int64_t u, int64_t v, int64_t* rp) +{ + int32_t c1 = 0, c2 = 0; + int64_t uu = u, vv = v; + int64_t w; + int64_t r; + + if (uu < 0) { + c1 = ~c1, c2 = ~c2, uu = -uu; + } + if (vv < 0) { + c1 = ~c1, vv = -vv; + } + + w = __udivmoddi4(uu, vv, (uint64_t*)&r); + if (c1) + w = -w; + if (c2) + r = -r; + + *rp = r; + return w; +} +#endif + +extern "C" float log2f_old(float x); +#ifdef __i386__ +__asm(".symver log2f_old,log2f@GLIBC_2.1"); +#elif defined(__amd64__) +__asm(".symver log2f_old,log2f@GLIBC_2.2.5"); +#elif defined(__arm__) +__asm(".symver log2f_old,log2f@GLIBC_2.4"); +#elif defined(__aarch64__) +__asm(".symver log2f_old,log2f@GLIBC_2.17"); +#endif +extern "C" float __wrap_log2f(float x) +{ + return log2f_old(x); +} |