/* * Copyright (c) 1999-2007 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_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. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * 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_OSREFERENCE_LICENSE_HEADER_END@ */ /* Copyright (c) 1992 NeXT Computer, Inc. All rights reserved. */ #include "SYS.h" #if defined(__ppc__) || defined(__ppc64__) /* We use mode-independent "g" opcodes such as "srgi", and/or * mode-independent macros such as MI_GET_ADDRESS. These expand * into word operations when targeting __ppc__, and into doubleword * operations when targeting __ppc64__. */ #include <architecture/ppc/mode_independent_asm.h> .globl _errno MI_ENTRY_POINT(cerror) MI_PUSH_STACK_FRAME MI_GET_ADDRESS(r12,_errno) stw r3,0(r12) /* save syscall return code in global */ MI_CALL_EXTERNAL(_cthread_set_errno_self) li r3,-1 /* then bug return value */ li r4,-1 /* in case we're returning a long-long in 32-bit mode, etc */ MI_POP_STACK_FRAME_AND_RETURN .globl _processor_facilities_used .align 2 _processor_facilities_used: li r0,0x7FF3 sc blr #elif defined(__i386__) .globl _errno LABEL(cerror) REG_TO_EXTERN(%eax, _errno) mov %esp,%edx andl $0xfffffff0,%esp subl $16,%esp movl %edx,4(%esp) movl %eax,(%esp) CALL_EXTERN(_cthread_set_errno_self) movl 4(%esp),%esp movl $-1,%eax movl $-1,%edx /* in case a 64-bit value is returned */ ret .private_extern __sysenter_trap ALIGN __sysenter_trap: popl %edx movl %esp, %ecx sysenter #elif defined(__x86_64__) .globl _errno LABEL(cerror) REG_TO_EXTERN(%rax, _errno) mov %rsp,%rdx andq $-16,%rsp subq $16,%rsp // Preserve the original stack movq %rdx,(%rsp) movq %rax,%rdi CALL_EXTERN(_cthread_set_errno_self) // Restore the original stack movq (%rsp),%rsp movq $-1,%rax movq $-1,%rdx /* in case a 128-bit value is returned */ ret #else #error Unsupported architecture #endif #if defined(__i386__) || defined(__x86_64__) .globl _i386_get_ldt ALIGN _i386_get_ldt: movl $6,%eax MACHDEP_SYSCALL_TRAP jnb 2f jmp cerror 2: ret .globl _i386_set_ldt ALIGN _i386_set_ldt: movl $5,%eax MACHDEP_SYSCALL_TRAP jnb 2f jmp cerror 2: ret #endif