/* * Copyright (c) 2012 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@ */ #if defined(__x86_64__) #include <mach/i386/syscall_sw.h> .text .align 2, 0x90 .globl ___pthread_set_self ___pthread_set_self: movl $0, %esi // 0 as the second argument movl $ SYSCALL_CONSTRUCT_MDEP(3), %eax // Machine-dependent syscall number 3 MACHDEP_SYSCALL_TRAP ret #ifndef VARIANT_DYLD .align 2, 0x90 .globl _start_wqthread _start_wqthread: // This routine is never called directly by user code, jumped from kernel push %rbp mov %rsp,%rbp sub $24,%rsp // align the stack call __pthread_wqthread leave ret .align 2, 0x90 .globl _thread_start _thread_start: // This routine is never called directly by user code, jumped from kernel push %rbp mov %rsp,%rbp sub $24,%rsp // align the stack call __pthread_start leave ret #endif #elif defined(__i386__) #include <mach/i386/syscall_sw.h> .text .align 2, 0x90 .globl ___pthread_set_self ___pthread_set_self: pushl 4(%esp) pushl $0 movl $3,%eax MACHDEP_SYSCALL_TRAP addl $8,%esp ret #ifndef VARIANT_DYLD .align 2, 0x90 .globl _start_wqthread _start_wqthread: // This routine is never called directly by user code, jumped from kernel push %ebp mov %esp,%ebp sub $28,%esp // align the stack mov %esi,20(%esp) //arg5 mov %edi,16(%esp) //arg5 mov %edx,12(%esp) //arg4 mov %ecx,8(%esp) //arg3 mov %ebx,4(%esp) //arg2 mov %eax,(%esp) //arg1 call __pthread_wqthread leave ret .align 2, 0x90 .globl _thread_start _thread_start: // This routine is never called directly by user code, jumped from kernel push %ebp mov %esp,%ebp sub $28,%esp // align the stack mov %esi,20(%esp) //arg6 mov %edi,16(%esp) //arg5 mov %edx,12(%esp) //arg4 mov %ecx,8(%esp) //arg3 mov %ebx,4(%esp) //arg2 mov %eax,(%esp) //arg1 call __pthread_start leave ret #endif #elif defined(__arm__) #include <mach/arm/syscall_sw.h> .text .align 2 .globl ___pthread_set_self ___pthread_set_self: /* fast trap for thread_set_cthread */ mov r3, #2 mov r12, #0x80000000 swi #SWI_SYSCALL bx lr #ifndef VARIANT_DYLD // This routine is never called directly by user code, jumped from kernel // args 0 to 3 are already in the regs 0 to 3 // should set stack with the 2 extra args before calling pthread_wqthread() // arg4 is in r[4] // arg5 is in r[5] .text .align 2 .globl _start_wqthread _start_wqthread: #if __ARM_ARCH_7K__ /* align stack to 16 bytes before calling C */ sub sp, sp, #8 #endif stmfd sp!, {r4, r5} bl __pthread_wqthread // Stackshots will show the routine that happens to link immediately following // _start_wqthread. So we add an extra instruction (nop) to make stackshots // more readable. nop .text .align 2 .globl _thread_start _thread_start: #if __ARM_ARCH_7K__ /* align stack to 16 bytes before calling C */ sub sp, sp, #8 #endif stmfd sp!, {r4, r5} bl __pthread_start // See above nop #endif #else #error Unsupported architecture #endif