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JITStubsMSVC64.asm
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255 lines (220 loc) · 6.12 KB
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;/*
; Copyright (C) 2013 Digia Plc. and/or its subsidiary(-ies)
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions
; are met:
; 1. Redistributions of source code must retain the above copyright
; notice, this list of conditions and the following disclaimer.
; 2. Redistributions in binary form must reproduce the above copyright
; notice, this list of conditions and the following disclaimer in the
; documentation and/or other materials provided with the distribution.
;
; THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
; EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
; PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
; CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
; EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
; PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
; OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;*/
EXTERN getHostCallReturnValueWithExecState : near
PUBLIC callToJavaScript
PUBLIC returnFromJavaScript
PUBLIC getHostCallReturnValue
_TEXT SEGMENT
callToJavaScript PROC
;; This function is believed to be an accurate adaptation of the assembly created by the llint stub of the
;; same name with changes for argument register differences.
mov r10, qword ptr[rsp]
push rbp
mov rax, rbp ; Save previous frame pointer
mov rbp, rsp
push r12
push r13
push r14
push r15
push rbx
push rsi
push rdi
; JIT operations can use up to 6 args (4 in registers and 2 on the stack).
; In addition, X86_64 ABI specifies that the worse case stack alignment
; requirement is 32 bytes. Based on these factors, we need to pad the stack
; an additional 28h bytes.
sub rsp, 28h
mov rbp, r9
sub rbp, 40
mov qword ptr[rbp + 40], 0
mov qword ptr[rbp + 32], rdx
mov rax, qword ptr[rdx]
mov qword ptr[rbp + 24], rax
mov qword ptr[rbp + 16], 1
mov qword ptr[rbp + 8], r10
mov qword ptr[rbp], rax
mov rax, rbp
mov ebx, dword ptr[r8 + 40]
add rbx, 6
sal rbx, 3
sub rbp, rbx
mov qword ptr[rbp], rax
mov rax, 5
copyHeaderLoop:
sub rax, 1
mov r10, qword ptr[r8 + rax * 8]
mov qword ptr[rbp + rax * 8 + 16], r10
test rax, rax
jnz copyHeaderLoop
mov ebx, dword ptr[r8 + 24]
sub rbx, 1
mov r10d, dword ptr[r8 + 40]
sub r10, 1
cmp rbx, r10
je copyArgs
mov rax, 0ah
fillExtraArgsLoop:
sub r10, 1
mov qword ptr[rbp + r10 * 8 + 56], rax
cmp rbx, r10
jne fillExtraArgsLoop
copyArgs:
mov rax, qword ptr[r8 + 48]
copyArgsLoop:
test ebx, ebx
jz copyArgsDone
sub ebx, 1
mov r10, qword ptr[rax + rbx * 8]
mov qword ptr[rbp + rbx * 8 + 56], r10
jmp copyArgsLoop
copyArgsDone:
mov qword ptr[rdx], rbp
mov r14, 0FFFF000000000000h
mov r15, 0FFFF000000000002h
call rcx
cmp qword ptr[rbp + 16], 1
je calleeFramePopped
mov rbp, qword ptr[rbp]
calleeFramePopped:
mov rbx, qword ptr[rbp + 32] ; VM.topCallFrame
mov r10, qword ptr[rbp + 24]
mov qword ptr[rbx], r10
add rsp, 28h
pop rdi
pop rsi
pop rbx
pop r15
pop r14
pop r13
pop r12
pop rbp
ret
callToJavaScript ENDP
callToNativeFunction PROC
;; This function is believed to be an accurate adaptation of the assembly created by the llint stub of the
;; same name with changes for argument register differences.
mov r10, qword ptr[rsp]
push rbp
mov rax, rbp ; Save previous frame pointer
mov rbp, rsp
push r12
push r13
push r14
push r15
push rbx
push rsi
push rdi
; JIT operations can use up to 6 args (4 in registers and 2 on the stack).
; In addition, X86_64 ABI specifies that the worse case stack alignment
; requirement is 32 bytes. Based on these factors, we need to pad the stack
; an additional 28h bytes.
sub rsp, 28h
mov rbp, r9
sub rbp, 40
mov qword ptr[rbp + 40], 0
mov qword ptr[rbp + 32], rdx
mov rax, qword ptr[rdx]
mov qword ptr[rbp + 24], rax
mov qword ptr[rbp + 16], 1
mov qword ptr[rbp + 8], r10
mov qword ptr[rbp], rax
mov rax, rbp
mov ebx, dword ptr[r8 + 40]
add rbx, 6
sal rbx, 3
sub rbp, rbx
mov qword ptr[rbp], rax
mov rax, 5
copyHeaderLoop:
sub rax, 1
mov r10, qword ptr[r8 + rax * 8]
mov qword ptr[rbp + rax * 8 + 16], r10
test rax, rax
jnz copyHeaderLoop
mov ebx, dword ptr[r8 + 24]
sub rbx, 1
mov r10d, dword ptr[r8 + 40]
sub r10, 1
cmp rbx, r10
je copyArgs
mov rax, 0ah
fillExtraArgsLoop:
sub r10, 1
mov qword ptr[rbp + r10 * 8 + 56], rax
cmp rbx, r10
jne fillExtraArgsLoop
copyArgs:
mov rax, qword ptr[r8 + 48]
copyArgsLoop:
test rbx, rbx
jz copyArgsDone
sub rbx, 1
mov r10, qword ptr[rax + rbx * 8]
mov qword ptr[rbp + rbx * 8 + 56], r10
jmp copyArgsLoop
copyArgsDone:
mov qword ptr[rdx], rbp
mov r14, 0FFFF000000000000h
mov r15, 0FFFF000000000002h
mov rax, rcx
mov rcx, rbp
call rax
cmp qword ptr[rbp + 16], 1
je calleeFramePopped
mov rbp, qword ptr[rbp]
calleeFramePopped:
mov rbx, qword ptr[rbp + 32] ; VM.topCallFrame
mov r10, qword ptr[rbp + 24]
mov qword ptr[rbx], r10
add rsp, 28h
pop rdi
pop rsi
pop rbx
pop r15
pop r14
pop r13
pop r12
pop rbp
ret
callToNativeFunction ENDP
returnFromJavaScript PROC
add rsp, 28h
pop rdi
pop rsi
pop rbx
pop r15
pop r14
pop r13
pop r12
pop rbp
ret
returnFromJavaScript ENDP
getHostCallReturnValue PROC
mov rbp, [rbp] ; CallFrame
mov rcx, rbp ; rcx is first argument register on Windows
jmp getHostCallReturnValueWithExecState
getHostCallReturnValue ENDP
_TEXT ENDS
END