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[ACPICA]

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- Fix GCC versions of ACPI_ACQUIRE_GLOBAL_LOCK/ACPI_RELEASE_GLOBAL_LOCK. It now generates the same code as the original
CORE-10509

svn path=/trunk/; revision=69863
This commit is contained in:
Thomas Faber 2015-11-10 12:43:58 +00:00
parent de1c000c42
commit 88b3e30fe5
1 changed files with 24 additions and 17 deletions
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41
reactos/drivers/bus/acpi/acpica/include/platform/acgcc.h
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@ -159,35 +159,42 @@
/*
* Global Lock acquire/release code
*
* Note: Taken from our old adaptation.
* TODO: Check whether it is equivalent to the MSVC code
* (which was also the same in the older version).
* Note: Handles case where the FACS pointer is null
*/
#define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \
#define ACPI_ACQUIRE_GLOBAL_LOCK(FacsPtr, Acq) \
do { \
int dummy; \
asm("1: movl (%1),%%eax;" \
asm("orl %2,%2;" \
"jz 2f;" \
"leal 16(%2),%2;" \
"1:" \
"movl (%2),%%eax;" \
"movl %%eax,%%edx;" \
"andl %2,%%edx;" \
"andl %3,%%edx;" \
"btsl $0x1,%%edx;" \
"adcl $0x0,%%edx;" \
"lock; cmpxchgl %%edx,(%1);" \
"lock; cmpxchgl %%edx,(%2);" \
"jnz 1b;" \
"cmpb $0x3,%%dl;" \
"sbbl %%eax,%%eax" \
:"=a"(Acq),"=c"(dummy):"c"(GLptr),"i"(~1L):"dx"); \
"sbbl %%eax,%%eax;" \
"2:" \
:"=a"(Acq):"a"(0xFF),"c"(FacsPtr),"i"(~1L):"edx");\
} while(0)
#define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \
#define ACPI_RELEASE_GLOBAL_LOCK(FacsPtr, Acq) \
do { \
int dummy; \
asm("1: movl (%1),%%eax;" \
asm("orl %2,%2;" \
"jz 2f;" \
"leal 16(%2),%2;" \
"1:" \
"movl (%2),%%eax;" \
"movl %%eax,%%edx;" \
"andl %2,%%edx;" \
"lock; cmpxchgl %%edx,(%1);" \
"andl %3,%%edx;" \
"lock; cmpxchgl %%edx,(%2);" \
"jnz 1b;" \
"andl $0x1,%%eax" \
:"=a"(Acq),"=c"(dummy):"c"(GLptr),"i"(~3L):"dx"); \
"cmpb $0x3,%%dl;" /* FIXME: this is pointless */ \
"andl $0x1,%%eax;" \
"2:" \
:"=a"(Acq):"a"(0),"c"(FacsPtr),"i"(~3L):"edx");\
} while(0)