| ; Copyright 2020 the V8 project authors. All rights reserved. |
| ; Use of this source code is governed by a BSD-style license that can be |
| ; found in the LICENSE file. |
| |
| ; This file is exactly the same as push_registers_asm.cc, just formatted for |
| ; the Microsoft Arm Assembler. |
| |
| AREA |.text|, CODE, ALIGN=4, READONLY |
| EXPORT PushAllRegistersAndIterateStack |
| PushAllRegistersAndIterateStack |
| ; x19-x29 are callee-saved |
| STP x19, x20, [sp, #-16]! |
| STP x21, x22, [sp, #-16]! |
| STP x23, x24, [sp, #-16]! |
| STP x25, x26, [sp, #-16]! |
| STP x27, x28, [sp, #-16]! |
| STP fp, lr, [sp, #-16]! |
| ; Maintain frame pointer |
| MOV fp, sp |
| ; Pass 1st parameter (x0) unchanged (Stack*). |
| ; Pass 2nd parameter (x1) unchanged (StackVisitor*). |
| ; Save 3rd parameter (x2; IterateStackCallback) |
| MOV x7, x2 |
| ; Pass 3rd parameter as sp (stack pointer) |
| MOV x2, sp |
| BLR x7 |
| ; Load return address |
| LDR lr, [sp, #8] |
| ; Restore frame pointer and pop all callee-saved registers. |
| LDR fp, [sp], #96 |
| RET |
| END |
