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Optimize memory accesses on little endian systems that can do unaligned

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accesses to memory. Fix build when vm.hpp is included in a C program.
This commit is contained in:
gbeauche 2003-11-24 21:30:17 +00:00
parent 04349eebce
commit 2a0f750a83
1 changed files with 24 additions and 0 deletions
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24
SheepShaver/src/kpx_cpu/src/cpu/vm.hpp
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@ -55,6 +55,28 @@ static inline void vm_do_write_memory_8(uint64 *a, uint64 v) { *a = v; }
#else
#ifdef VM_CAN_ACCESS_UNALIGNED
#ifndef VM_OPTIMIZED_MEMORY_ACCESS_2
#define VM_OPTIMIZED_MEMORY_ACCESS_2
static inline uint32 vm_do_read_memory_2(uint16 *a) { return bswap_16(*a); }
static inline void vm_do_write_memory_2(uint16 *a, uint32 v) { *a = bswap_16(v); }
#endif
#ifndef VM_OPTIMIZED_MEMORY_ACCESS_4
#define VM_OPTIMIZED_MEMORY_ACCESS_4
static inline uint32 vm_do_read_memory_4(uint32 *a) { return bswap_32(*a); }
static inline void vm_do_write_memory_4(uint32 *a, uint32 v) { *a = bswap_32(v); }
#endif
#ifndef VM_OPTIMIZED_MEMORY_ACCESS_8
#define VM_OPTIMIZED_MEMORY_ACCESS_8
static inline uint64 vm_do_read_memory_8(uint64 *a) { return bswap_64(*a); }
static inline void vm_do_write_memory_8(uint64 *a, uint64 v) { *a = bswap_64(v); }
#endif
#endif /* VM_CAN_ACCESS_UNALIGNED */
#endif /* WORDS_BIGENDIAN */
///
@ -245,6 +267,7 @@ static inline void *vm_memset(vm_addr_t addr, int c, size_t n)
uint8 * const m = (uint8 *)vm_do_get_real_address(addr);
return memset(m, c, n);
}
#ifdef __cplusplus
static inline void *vm_memcpy(void *dest, vm_addr_t src, size_t n)
{
return memcpy(dest, vm_do_get_real_address(src), n);
@ -253,6 +276,7 @@ static inline void *vm_memcpy(vm_addr_t dest, const void *src, size_t n)
{
return memcpy(vm_do_get_real_address(dest), src, n);
}
#endif
static inline void *vm_memcpy(vm_addr_t dest, vm_addr_t src, size_t n)
{
return memcpy(vm_do_get_real_address(dest), vm_do_get_real_address(src), n);