/* * Copyright (c) 1999-2006 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #import <architecture/i386/asm_help.h> .text .globl mcount mcount: pushq %rbp // setup mcount's frame movq %rsp, %rbp subq $64, %rsp // allocate space for storage and alignment movq %rax, 0(%rsp) movq %rdi, 8(%rsp) movq %rsi, 16(%rsp) movq %rdx, 24(%rsp) movq %rcx, 32(%rsp) movq %r8, 40(%rsp) movq %r9, 48(%rsp) movq (%rbp), %rsi // load the frame pointer of mcount's caller movq 8(%rsi), %rsi // load mcount's caller's return address movq 8(%rbp), %rdi // set up the selfpc parameter for moncount() CALL_EXTERN(_moncount) // call moncount() movq 48(%rsp), %r9 movq 40(%rsp), %r8 movq 32(%rsp), %rcx movq 24(%rsp), %rdx movq 16(%rsp), %rsi movq 8(%rsp), %rdi movq 0(%rsp), %rax movq %rbp, %rsp popq %rbp // tear down frame ret