| /* |
| * Copyright (C) 2014 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "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 THE COPYRIGHT |
| * OWNER 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. |
| */ |
| |
| |
| /* |
| * typedef void (*PushAllRegistersCallback)(ThreadState*, intptr_t*); |
| * extern "C" void PushAllRegisters(ThreadState*, PushAllRegistersCallback) |
| */ |
| |
| /* Supplementary macro for setting function attributes */ |
| .macro asm_function fname |
| #ifdef __APPLE__ |
| .globl _\fname |
| .private_extern _\fname |
| _\fname: |
| #else |
| .global \fname |
| #ifdef __ELF__ |
| .hidden \fname |
| .type \fname, %function |
| #endif |
| \fname: |
| #endif |
| .endm |
| |
| asm_function PushAllRegisters |
| .p2align 2 |
| /* Save return address. */ |
| sub sp, sp, #96 |
| stp x19, x20, [sp, #80] |
| stp x21, x22, [sp, #64] |
| stp x23, x24, [sp, #48] |
| stp x25, x26, [sp, #32] |
| stp x27, x28, [sp, #16] |
| stp x30, x29, [sp, #0] // x30 is lr. |
| |
| /* Pass the first argument unchanged (x0) |
| * and pass the stack pointer as third argument to the |
| * callback function. |
| */ |
| mov x2, x1 |
| mov x1, sp |
| blr x2 |
| |
| /* We don't restore all registers since they are callee saved (so |
| * the callback didn't clobber them) and we didn't modify them either. |
| */ |
| ldr x30, [sp], #96 |
| ret |
