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- added do_byteswap_16() and do_byteswap_32()

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gbeauche 2001-01-28 14:03:19 +00:00
parent 81f357c42c
commit 97d7dcc005
1 changed files with 19 additions and 0 deletions
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19
BasiliskII/src/Unix/sysdeps.h
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@ -236,6 +236,15 @@ static inline void do_put_mem_word(uae_u16 *a, uae_u32 v) {__asm__ ("bswapl %0"
#else
static inline void do_put_mem_word(uae_u16 *a, uae_u32 v) {__asm__ ("rolw $8,%0" : "=r" (v) : "0" (v) : "cc"); *a = v;}
#endif
#define HAVE_OPTIMIZED_BYTESWAP_32
/* bswap doesn't affect condition codes */
static inline uae_u32 do_byteswap_32(uae_u32 v) {__asm__ ("bswap %0" : "=r" (v) : "0" (v)); return v;}
#define HAVE_OPTIMIZED_BYTESWAP_16
#ifdef X86_PPRO_OPT
static inline uae_u32 do_byteswap_16(uae_u32 v) {__asm__ ("bswapl %0" : "=&r" (v) : "0" (v << 16) : "cc"); return v;}
#else
static inline uae_u32 do_byteswap_16(uae_u32 v) {__asm__ ("rolw $8,%0" : "=r" (v) : "0" (v) : "cc"); return v;}
#endif
#elif defined(CPU_CAN_ACCESS_UNALIGNED)
@ -257,6 +266,16 @@ static inline void do_put_mem_word(uae_u16 *a, uae_u32 v) {uint8 *b = (uint8 *)a
#endif /* WORDS_BIGENDIAN */
#ifndef HAVE_OPTIMIZED_BYTESWAP_32
static inline uae_u32 do_byteswap_32(uae_u32 v)
{ return (((v >> 24) & 0xff) | ((v >> 8) & 0xff00) | ((v & 0xff) << 24) | ((v & 0xff00) << 8)); }
#endif
#ifndef HAVE_OPTIMIZED_BYTESWAP_16
static inline uae_u32 do_byteswap_16(uae_u32 v)
{ return (((v >> 8) & 0xff) | ((v & 0xff) << 8)); }
#endif
#define do_get_mem_byte(a) ((uae_u32)*((uae_u8 *)(a)))
#define do_put_mem_byte(a, v) (*(uae_u8 *)(a) = (v))