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lib:util: Remove PPC big endian asm optimized code in byteorder.h

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Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This commit is contained in:
Andreas Schneider 2018-12-21 09:43:01 +01:00 committed by Andrew Bartlett
parent be589a1fd4
commit 3f16e97fe3
1 changed files with 0 additions and 51 deletions
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51
lib/util/byteorder.h
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@ -88,60 +88,11 @@ it also defines lots of intermediate macros, just ignore those :-)
*/
/*
* On powerpc we can use the magic instructions to load/store in little endian.
* The instructions are reverse-indexing, so assume a big endian Power
* processor. Power8 can be big or little endian, so we need to explicitly
* check.
*/
#if (defined(__powerpc__) && defined(__GNUC__) && HAVE_BIG_ENDIAN)
static __inline__ uint16_t ld_le16(const uint16_t *addr)
{
uint16_t val;
__asm__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
return val;
}
static __inline__ void st_le16(uint16_t *addr, const uint16_t val)
{
__asm__ ("sthbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
}
static __inline__ uint32_t ld_le32(const uint32_t *addr)
{
uint32_t val;
__asm__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
return val;
}
static __inline__ void st_le32(uint32_t *addr, const uint32_t val)
{
__asm__ ("stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
}
#define USE_ASM_BYTEORDER 1
#else
#define USE_ASM_BYTEORDER 0
#endif
#define CVAL(buf,pos) ((unsigned int)(((const uint8_t *)(buf))[pos]))
#define CVAL_NC(buf,pos) (((uint8_t *)(buf))[pos]) /* Non-const version of CVAL */
#define PVAL(buf,pos) (CVAL(buf,pos))
#define SCVAL(buf,pos,val) (CVAL_NC(buf,pos) = (val))
#if USE_ASM_BYTEORDER
#define _PTRPOS(buf,pos) (((const uint8_t *)(buf))+(pos))
#define SVAL(buf,pos) ld_le16((const uint16_t *)_PTRPOS(buf,pos))
#define IVAL(buf,pos) ld_le32((const uint32_t *)_PTRPOS(buf,pos))
#define SSVAL(buf,pos,val) st_le16((uint16_t *)_PTRPOS(buf,pos), val)
#define SIVAL(buf,pos,val) st_le32((uint32_t *)_PTRPOS(buf,pos), val)
#define SVALS(buf,pos) ((int16_t)SVAL(buf,pos))
#define IVALS(buf,pos) ((int32_t)IVAL(buf,pos))
#define SSVALS(buf,pos,val) SSVAL((buf),(pos),((int16_t)(val)))
#define SIVALS(buf,pos,val) SIVAL((buf),(pos),((int32_t)(val)))
#else /* not USE_ASM_BYTEORDER */
#define SVAL(buf,pos) (PVAL(buf,pos)|PVAL(buf,(pos)+1)<<8)
#define IVAL(buf,pos) (SVAL(buf,pos)|SVAL(buf,(pos)+2)<<16)
#define SSVALX(buf,pos,val) (CVAL_NC(buf,pos)=(uint8_t)((val)&0xFF),CVAL_NC(buf,pos+1)=(uint8_t)((val)>>8))
@ -153,8 +104,6 @@ static __inline__ void st_le32(uint32_t *addr, const uint32_t val)
#define SSVALS(buf,pos,val) SSVALX((buf),(pos),((int16_t)(val)))
#define SIVALS(buf,pos,val) SIVALX((buf),(pos),((int32_t)(val)))
#endif /* not USE_ASM_BYTEORDER */
/* 64 bit macros */
#define BVAL(p, ofs) (IVAL(p,ofs) | (((uint64_t)IVAL(p,(ofs)+4)) << 32))
#define BVALS(p, ofs) ((int64_t)BVAL(p,ofs))