diff options
Diffstat (limited to 'Include/pyport.h')
| -rw-r--r-- | Include/pyport.h | 45 |
1 files changed, 14 insertions, 31 deletions
diff --git a/Include/pyport.h b/Include/pyport.h index b631cf3..be1d66d 100644 --- a/Include/pyport.h +++ b/Include/pyport.h @@ -177,26 +177,9 @@ typedef int Py_ssize_clean_t; #define Py_LOCAL_INLINE(type) static type #endif -/* Py_MEMCPY can be used instead of memcpy in cases where the copied blocks - * are often very short. While most platforms have highly optimized code for - * large transfers, the setup costs for memcpy are often quite high. MEMCPY - * solves this by doing short copies "in line". - */ - -#if defined(_MSC_VER) -#define Py_MEMCPY(target, source, length) do { \ - size_t i_, n_ = (length); \ - char *t_ = (void*) (target); \ - const char *s_ = (void*) (source); \ - if (n_ >= 16) \ - memcpy(t_, s_, n_); \ - else \ - for (i_ = 0; i_ < n_; i_++) \ - t_[i_] = s_[i_]; \ - } while (0) -#else +/* Py_MEMCPY is kept for backwards compatibility, + * see https://bugs.python.org/issue28126 */ #define Py_MEMCPY memcpy -#endif #include <stdlib.h> @@ -449,18 +432,18 @@ extern "C" { #define HAVE_PY_SET_53BIT_PRECISION 1 #define _Py_SET_53BIT_PRECISION_HEADER \ unsigned int old_fpcr, new_fpcr -#define _Py_SET_53BIT_PRECISION_START \ - do { \ - __asm__ ("fmove.l %%fpcr,%0" : "=g" (old_fpcr)); \ - /* Set double precision / round to nearest. */ \ - new_fpcr = (old_fpcr & ~0xf0) | 0x80; \ - if (new_fpcr != old_fpcr) \ - __asm__ volatile ("fmove.l %0,%%fpcr" : : "g" (new_fpcr)); \ +#define _Py_SET_53BIT_PRECISION_START \ + do { \ + __asm__ ("fmove.l %%fpcr,%0" : "=g" (old_fpcr)); \ + /* Set double precision / round to nearest. */ \ + new_fpcr = (old_fpcr & ~0xf0) | 0x80; \ + if (new_fpcr != old_fpcr) \ + __asm__ volatile ("fmove.l %0,%%fpcr" : : "g" (new_fpcr)); \ } while (0) -#define _Py_SET_53BIT_PRECISION_END \ - do { \ - if (new_fpcr != old_fpcr) \ - __asm__ volatile ("fmove.l %0,%%fpcr" : : "g" (old_fpcr)); \ +#define _Py_SET_53BIT_PRECISION_END \ + do { \ + if (new_fpcr != old_fpcr) \ + __asm__ volatile ("fmove.l %0,%%fpcr" : : "g" (old_fpcr)); \ } while (0) #endif @@ -742,7 +725,7 @@ extern pid_t forkpty(int *, char *, struct termios *, struct winsize *); #endif #ifdef VA_LIST_IS_ARRAY -#define Py_VA_COPY(x, y) Py_MEMCPY((x), (y), sizeof(va_list)) +#define Py_VA_COPY(x, y) memcpy((x), (y), sizeof(va_list)) #else #ifdef __va_copy #define Py_VA_COPY __va_copy |