| /* |
| * Copyright (C) 2013 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)(SafePointBarrier*, ThreadState*, intptr_t*); |
| * extern "C" void pushAllRegisters(SafePointBarrier*, ThreadState*, PushAllRegistersCallback) |
| */ |
| |
| .type pushAllRegisters, %function |
| .global pushAllRegisters |
| .hidden pushAllRegisters |
| #ifdef __thumb__ |
| /* In THUMB Mode jump to ARM stub via bx to ensure CPU mode switch. |
| * FIXME: This trampoline is provided to workaround bugs in |
| * the THUMB/ARM interworking that appear in the component build. |
| * When these issues are resolved this stub can be removed. |
| */ |
| .align 2 |
| .code 16 |
| .thumb_func |
| pushAllRegisters: |
| adr r3, pushAllRegistersARM |
| bx r3 |
| |
| .type pushAllRegistersARM, %function |
| .hidden pushAllRegistersARM |
| .align 4 |
| .code 32 |
| pushAllRegistersARM: |
| #else |
| /* ARM Mode */ |
| .align 4 |
| .code 32 |
| pushAllRegisters: |
| #endif |
| /* Push all callee-saved registers and save return address. */ |
| push {r4-r11, lr} |
| /* Pass the two first arguments unchanged (r0, r1) |
| * and pass the stack pointer after pushing callee-saved |
| * registers to the callback function. |
| */ |
| mov r3, r2 |
| mov r2, sp |
| blx r3 |
| /* Discard all the registers, and pop lr into pc which returns |
| * and switches mode if needed. |
| */ |
| add sp, sp, #32 |
| pop {pc} |