[mirror_edk2.git] / OvmfPkg / XenBusDxe / X64 / TestAndClearBit.nasm

DEFAULT REL\r
SECTION .text\r
\r
; INT32\r
; EFIAPI\r
; TestAndClearBit (\r
;   IN  INT32 Bit,                // rcx\r
;   IN  volatile VOID* Address    // rdx\r
;   );\r
global ASM_PFX(TestAndClearBit)\r
ASM_PFX(TestAndClearBit):\r
  lock btr [rdx], ecx\r
  sbb eax, eax\r
  ret\r
\r
Commit	Line	Data
6f6c3a1f AP	1	DEFAULT REL\r
6f6c3a1f AP	2	SECTION .text\r
6342f1fe AP	3	\r
	4	; INT32\r
	5	; EFIAPI\r
	6	; TestAndClearBit (\r
	7	; IN INT32 Bit, // rcx\r
	8	; IN volatile VOID* Address // rdx\r
	9	; );\r
6f6c3a1f AP	10	global ASM_PFX(TestAndClearBit)\r
6f6c3a1f AP	11	ASM_PFX(TestAndClearBit):\r
46133008	12	lock btr [rdx], ecx\r
6342f1fe AP	13	sbb eax, eax\r
6342f1fe AP	14	ret\r
6342f1fe	15	\r