xref: /xnu-12377.81.4/libsyscall/custom/__ptrace.s (revision 043036a2b3718f7f0be807e2870f8f47d3fa0796)
1*043036a2SApple OSS Distributions/*
2*043036a2SApple OSS Distributions * Copyright (c) 1999-2007 Apple Inc. All rights reserved.
3*043036a2SApple OSS Distributions *
4*043036a2SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*043036a2SApple OSS Distributions *
6*043036a2SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*043036a2SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*043036a2SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*043036a2SApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*043036a2SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*043036a2SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*043036a2SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*043036a2SApple OSS Distributions * terms of an Apple operating system software license agreement.
14*043036a2SApple OSS Distributions *
15*043036a2SApple OSS Distributions * Please obtain a copy of the License at
16*043036a2SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*043036a2SApple OSS Distributions *
18*043036a2SApple OSS Distributions * The Original Code and all software distributed under the License are
19*043036a2SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*043036a2SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*043036a2SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*043036a2SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*043036a2SApple OSS Distributions * Please see the License for the specific language governing rights and
24*043036a2SApple OSS Distributions * limitations under the License.
25*043036a2SApple OSS Distributions *
26*043036a2SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*043036a2SApple OSS Distributions */
28*043036a2SApple OSS Distributions/* Copyright (c) 1992 NeXT Computer, Inc.  All rights reserved. */
29*043036a2SApple OSS Distributions
30*043036a2SApple OSS Distributions#include "SYS.h"
31*043036a2SApple OSS Distributions
32*043036a2SApple OSS Distributions#if defined(__i386__)
33*043036a2SApple OSS Distributions
34*043036a2SApple OSS Distributions	.globl	_errno
35*043036a2SApple OSS Distributions
36*043036a2SApple OSS DistributionsLEAF(___ptrace, 0)
37*043036a2SApple OSS Distributions	xorl	%eax,%eax
38*043036a2SApple OSS Distributions	REG_TO_EXTERN(%eax,_errno)
39*043036a2SApple OSS Distributions	UNIX_SYSCALL_NONAME(ptrace, 4, cerror)
40*043036a2SApple OSS Distributions	ret
41*043036a2SApple OSS Distributions
42*043036a2SApple OSS Distributions#elif defined(__x86_64__)
43*043036a2SApple OSS Distributions
44*043036a2SApple OSS Distributions	.globl	_errno
45*043036a2SApple OSS Distributions
46*043036a2SApple OSS DistributionsLEAF(___ptrace, 0)
47*043036a2SApple OSS Distributions	xorq	%rax,%rax
48*043036a2SApple OSS Distributions	PICIFY(_errno)
49*043036a2SApple OSS Distributions	movl	%eax,(%r11)
50*043036a2SApple OSS Distributions	UNIX_SYSCALL_NONAME(ptrace, 4, cerror)
51*043036a2SApple OSS Distributions	ret
52*043036a2SApple OSS Distributions	UNWIND_EPILOGUE
53*043036a2SApple OSS Distributions
54*043036a2SApple OSS Distributions#elif defined(__arm__)
55*043036a2SApple OSS Distributions
56*043036a2SApple OSS DistributionsMI_ENTRY_POINT(___ptrace)
57*043036a2SApple OSS Distributions	MI_GET_ADDRESS(ip,_errno)
58*043036a2SApple OSS Distributions	str	r8, [sp, #-4]!
59*043036a2SApple OSS Distributions	mov     r8, #0
60*043036a2SApple OSS Distributions	str     r8, [ip]
61*043036a2SApple OSS Distributions	ldr	r8, [sp], #4
62*043036a2SApple OSS Distributions	SYSCALL_NONAME(ptrace, 4, cerror)
63*043036a2SApple OSS Distributions	bx		lr
64*043036a2SApple OSS Distributions
65*043036a2SApple OSS Distributions#elif defined(__arm64__)
66*043036a2SApple OSS Distributions
67*043036a2SApple OSS DistributionsMI_ENTRY_POINT(___ptrace)
68*043036a2SApple OSS Distributions	MI_GET_ADDRESS(x9,_errno)
69*043036a2SApple OSS Distributions	str		wzr, [x9]
70*043036a2SApple OSS Distributions	SYSCALL_NONAME(ptrace, 4, cerror)
71*043036a2SApple OSS Distributions	ret
72*043036a2SApple OSS Distributions
73*043036a2SApple OSS Distributions#else
74*043036a2SApple OSS Distributions#error Unsupported architecture
75*043036a2SApple OSS Distributions#endif
76