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Implement byte swapping accesses

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4574 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1 2008-05-25 11:19:24 +00:00
parent a8c768c069
commit 8384dd67fe
2 changed files with 104 additions and 36 deletions
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38
cpu-all.h
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@ -233,6 +233,15 @@ static inline int lduw_le_p(void *ptr)
int val;
__asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
return val;
#elif defined(__sparc__)
#ifndef ASI_PRIMARY_LITTLE
#define ASI_PRIMARY_LITTLE 0x88
#endif
int val;
__asm__ __volatile__ ("lduha [%1] %2, %0" : "=r" (val) : "r" (ptr),
"i" (ASI_PRIMARY_LITTLE));
return val;
#else
uint8_t *p = ptr;
return p[0] | (p[1] << 8);
@ -245,6 +254,11 @@ static inline int ldsw_le_p(void *ptr)
int val;
__asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
return (int16_t)val;
#elif defined(__sparc__)
int val;
__asm__ __volatile__ ("ldsha [%1] %2, %0" : "=r" (val) : "r" (ptr),
"i" (ASI_PRIMARY_LITTLE));
return val;
#else
uint8_t *p = ptr;
return (int16_t)(p[0] | (p[1] << 8));
@ -257,6 +271,11 @@ static inline int ldl_le_p(void *ptr)
int val;
__asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (ptr));
return val;
#elif defined(__sparc__)
int val;
__asm__ __volatile__ ("lduwa [%1] %2, %0" : "=r" (val) : "r" (ptr),
"i" (ASI_PRIMARY_LITTLE));
return val;
#else
uint8_t *p = ptr;
return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
@ -265,17 +284,27 @@ static inline int ldl_le_p(void *ptr)
static inline uint64_t ldq_le_p(void *ptr)
{
#if defined(__sparc__)
uint64_t val;
__asm__ __volatile__ ("ldxa [%1] %2, %0" : "=r" (val) : "r" (ptr),
"i" (ASI_PRIMARY_LITTLE));
return val;
#else
uint8_t *p = ptr;
uint32_t v1, v2;
v1 = ldl_le_p(p);
v2 = ldl_le_p(p + 4);
return v1 | ((uint64_t)v2 << 32);
#endif
}
static inline void stw_le_p(void *ptr, int v)
{
#ifdef __powerpc__
__asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*(uint16_t *)ptr) : "r" (v), "r" (ptr));
#elif defined(__sparc__)
__asm__ __volatile__ ("stha %1, [%2] %3" : "=m" (*(uint16_t *)ptr) : "r" (v),
"r" (ptr), "i" (ASI_PRIMARY_LITTLE));
#else
uint8_t *p = ptr;
p[0] = v;
@ -287,6 +316,9 @@ static inline void stl_le_p(void *ptr, int v)
{
#ifdef __powerpc__
__asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*(uint32_t *)ptr) : "r" (v), "r" (ptr));
#elif defined(__sparc__)
__asm__ __volatile__ ("stwa %1, [%2] %3" : "=m" (*(uint32_t *)ptr) : "r" (v),
"r" (ptr), "i" (ASI_PRIMARY_LITTLE));
#else
uint8_t *p = ptr;
p[0] = v;
@ -298,9 +330,15 @@ static inline void stl_le_p(void *ptr, int v)
static inline void stq_le_p(void *ptr, uint64_t v)
{
#if defined(__sparc__)
__asm__ __volatile__ ("stxa %1, [%2] %3" : "=m" (*(uint64_t *)ptr) : "r" (v),
"r" (ptr), "i" (ASI_PRIMARY_LITTLE));
#undef ASI_PRIMARY_LITTLE
#else
uint8_t *p = ptr;
stl_le_p(p, (uint32_t)v);
stl_le_p(p + 4, v >> 32);
#endif
}
/* float access */