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

DEFAULT REL\r
SECTION .text\r
\r
; INTN\r
; EFIAPI\r
; __XenHypercall2 (\r
;   IN     VOID *HypercallAddr,\r
;   IN OUT INTN Arg1,\r
;   IN OUT INTN Arg2\r
;   );\r
global ASM_PFX(__XenHypercall2)\r
ASM_PFX(__XenHypercall2):\r
  push rdi\r
  push rsi\r
  ; Copy HypercallAddr to rax\r
  mov rax, rcx\r
  ; Copy Arg1 to the register expected by Xen\r
  mov rdi, rdx\r
  ; Copy Arg2 to the register expected by Xen\r
  mov rsi, r8\r
  ; Call HypercallAddr\r
  call rax\r
  pop rsi\r
  pop rdi\r
  ret\r
\r
Commit	Line	Data
60aafa1b AP	1	DEFAULT REL\r
60aafa1b AP	2	SECTION .text\r
abcbbb14 AP	3	\r
	4	; INTN\r
	5	; EFIAPI\r
bbc3758a	6	; __XenHypercall2 (\r
abcbbb14 AP	7	; IN VOID *HypercallAddr,\r
	8	; IN OUT INTN Arg1,\r
	9	; IN OUT INTN Arg2\r
	10	; );\r
bbc3758a AB	11	global ASM_PFX(__XenHypercall2)\r
bbc3758a AB	12	ASM_PFX(__XenHypercall2):\r
abcbbb14 AP	13	push rdi\r
	14	push rsi\r
	15	; Copy HypercallAddr to rax\r
	16	mov rax, rcx\r
	17	; Copy Arg1 to the register expected by Xen\r
	18	mov rdi, rdx\r
	19	; Copy Arg2 to the register expected by Xen\r
	20	mov rsi, r8\r
	21	; Call HypercallAddr\r
	22	call rax\r
	23	pop rsi\r
	24	pop rdi\r
	25	ret\r
abcbbb14	26	\r