Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2025-02-24 17:34:57 +00:00
Code Issues Projects Releases Packages Wiki Activity

Fixed:

Browse source 
- _InterlockedCompareExchange64 (more efficient handling of 64-bit operands)
 - __writecr0, __writecr3, __writecr4 (for real this time)

svn path=/trunk/; revision=24343
This commit is contained in:
KJK::Hyperion 2006-10-01 14:49:07 +00:00
parent 70da417c02
commit 41ecee90f7
1 changed files with 25 additions and 28 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

53
reactos/include/psdk/intrin.h
View file

@ -210,38 +210,35 @@ static __inline__ __attribute__((always_inline)) long _InterlockedCompareExchang
static __inline__ __attribute__((always_inline)) long long _InterlockedCompareExchange64(volatile long long * const Destination, const long long Exchange, const long long Comperand) static __inline__ __attribute__((always_inline)) long long _InterlockedCompareExchange64(volatile long long * const Destination, const long long Exchange, const long long Comperand)
{ {
/* TODO: this form of passing long long values makes GCC generate inefficient code. Use what's used elsewhere */ unsigned long lo32Retval = (unsigned long)((Comperand >> 0) & 0xFFFFFFFF);
union long hi32Retval = (unsigned long)((Comperand >> 32) & 0xFFFFFFFF);
{
long long ll;
struct
{
unsigned long lo32;
long hi32;
};
}
LlRetval = { ll : Comperand };
union unsigned long lo32Exchange = (unsigned long)((Exchange >> 0) & 0xFFFFFFFF);
{ long hi32Exchange = (unsigned long)((Exchange >> 32) & 0xFFFFFFFF);
long long ll;
struct
{
unsigned long lo32;
long hi32;
};
}
LlExchange = { ll : Exchange };
__asm__ __asm__
( (
"cmpxchg8b %[Destination]" : "cmpxchg8b %[Destination]" :
"a" (LlRetval.lo32), "d" (LlRetval.hi32) : "a" (lo32Retval), "d" (hi32Retval) :
[Destination] "rm" (Destination), "b" (LlExchange.lo32), "c" (LlExchange.hi32) : [Destination] "rm" (Destination), "b" (lo32Exchange), "c" (hi32Exchange) :
"memory" "memory"
); );
return LlRetval.ll; {
union u_
{
long long ll;
struct s_
{
unsigned long lo32;
long hi32;
}
s;
}
u = { s : { lo32 : lo32Retval, hi32 : hi32Retval } };
return u.ll;
}
} }
static __inline__ __attribute__((always_inline)) void * _InterlockedCompareExchangePointer(void * volatile * const Destination, void * const Exchange, void * const Comperand) static __inline__ __attribute__((always_inline)) void * _InterlockedCompareExchangePointer(void * volatile * const Destination, void * const Exchange, void * const Comperand)
@ -468,7 +465,7 @@ static __inline__ __attribute__((always_inline)) unsigned char _interlockedbitte
/*** String operations ***/ /*** String operations ***/
/* NOTE: we don't set a memory barrier in the __stosX functions because Visual C++ doesn't */ /* NOTE: we don't set a memory clobber in the __stosX functions because Visual C++ doesn't */
static __inline__ __attribute__((always_inline)) void __stosb(unsigned char * Dest, const unsigned char Data, size_t Count) static __inline__ __attribute__((always_inline)) void __stosb(unsigned char * Dest, const unsigned char Data, size_t Count)
{ {
__asm__ __volatile__ __asm__ __volatile__
@ -1006,17 +1003,17 @@ static __inline__ __attribute__((always_inline)) unsigned long __readcr4(void)
static __inline__ __attribute__((always_inline)) void __writecr0(const unsigned long long Data) static __inline__ __attribute__((always_inline)) void __writecr0(const unsigned long long Data)
{ {
__asm__("mov %%cr0, %0" : : "q" ((const unsigned long)(Data & 0xFFFFFFFF))); __asm__("mov %[Data], %%cr0" : : [Data] "q" ((const unsigned long)(Data & 0xFFFFFFFF)));
} }
static __inline__ __attribute__((always_inline)) void __writecr3(const unsigned long long Data) static __inline__ __attribute__((always_inline)) void __writecr3(const unsigned long long Data)
{ {
__asm__("mov %%cr3, %0" : : "q" ((const unsigned long)(Data & 0xFFFFFFFF))); __asm__("mov %[Data], %%cr3" : : [Data] "q" ((const unsigned long)(Data & 0xFFFFFFFF)));
} }
static __inline__ __attribute__((always_inline)) void __writecr4(const unsigned long long Data) static __inline__ __attribute__((always_inline)) void __writecr4(const unsigned long long Data)
{ {
__asm__("mov %%cr4, %0" : : "q" ((const unsigned long)(Data & 0xFFFFFFFF))); __asm__("mov %[Data], %%cr4" : : [Data] "q" ((const unsigned long)(Data & 0xFFFFFFFF)));
} }
static __inline__ __attribute__((always_inline)) void __invlpg(void * const Address) static __inline__ __attribute__((always_inline)) void __invlpg(void * const Address)