1 /* 2 * Copyright (C) 2013 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 32 /* 33 * typedef void (*PushAllRegistersCallback)(SafePointBarrier*, ThreadState*, intptr_t*); 34 * extern "C" void pushAllRegisters(SafePointBarrier*, ThreadState*, PushAllRegistersCallback) 35 */ 36 37 .type pushAllRegisters, %function 38 .global pushAllRegisters 39 .hidden pushAllRegisters 40 pushAllRegisters: 41 // Reserve space for callee-saved registers, return address, 42 // as well as for the callee arguments. 43 addiu $sp,$sp,-56 44 // Save the callee-saved registers and the return address. 45 sw $s0,16($sp) 46 sw $s1,20($sp) 47 sw $s2,24($sp) 48 sw $s3,28($sp) 49 sw $s4,32($sp) 50 sw $s5,36($sp) 51 sw $s6,40($sp) 52 sw $s7,44($sp) 53 sw $ra,48($sp) 54 // Pass the two first arguments untouched in a0 and a1 and the 55 // stack pointer to the callback. 56 move $t9,$a2 57 move $a2,$sp 58 jal $t9 59 // Restore return address, adjust stack and return. No 60 // callee-saved register was changed so we do not have to 61 // restore callee-saved registers. 62 lw $ra,48($sp) 63 addiu $sp,$sp,56 64 jr $ra 65
