xref: /xnu-8020.101.4/libsyscall/custom/__ptrace.s (revision e7776783b89a353188416a9a346c6cdb4928faad)
1*e7776783SApple OSS Distributions/*
2*e7776783SApple OSS Distributions * Copyright (c) 1999-2007 Apple Inc. All rights reserved.
3*e7776783SApple OSS Distributions *
4*e7776783SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*e7776783SApple OSS Distributions *
6*e7776783SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*e7776783SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*e7776783SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*e7776783SApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*e7776783SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*e7776783SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*e7776783SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*e7776783SApple OSS Distributions * terms of an Apple operating system software license agreement.
14*e7776783SApple OSS Distributions *
15*e7776783SApple OSS Distributions * Please obtain a copy of the License at
16*e7776783SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*e7776783SApple OSS Distributions *
18*e7776783SApple OSS Distributions * The Original Code and all software distributed under the License are
19*e7776783SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*e7776783SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*e7776783SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*e7776783SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*e7776783SApple OSS Distributions * Please see the License for the specific language governing rights and
24*e7776783SApple OSS Distributions * limitations under the License.
25*e7776783SApple OSS Distributions *
26*e7776783SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*e7776783SApple OSS Distributions */
28*e7776783SApple OSS Distributions/* Copyright (c) 1992 NeXT Computer, Inc.  All rights reserved. */
29*e7776783SApple OSS Distributions
30*e7776783SApple OSS Distributions#include "SYS.h"
31*e7776783SApple OSS Distributions
32*e7776783SApple OSS Distributions#if defined(__i386__)
33*e7776783SApple OSS Distributions
34*e7776783SApple OSS Distributions	.globl	_errno
35*e7776783SApple OSS Distributions
36*e7776783SApple OSS DistributionsLEAF(___ptrace, 0)
37*e7776783SApple OSS Distributions	xorl	%eax,%eax
38*e7776783SApple OSS Distributions	REG_TO_EXTERN(%eax,_errno)
39*e7776783SApple OSS Distributions	UNIX_SYSCALL_NONAME(ptrace, 4, cerror)
40*e7776783SApple OSS Distributions	ret
41*e7776783SApple OSS Distributions
42*e7776783SApple OSS Distributions#elif defined(__x86_64__)
43*e7776783SApple OSS Distributions
44*e7776783SApple OSS Distributions	.globl	_errno
45*e7776783SApple OSS Distributions
46*e7776783SApple OSS DistributionsLEAF(___ptrace, 0)
47*e7776783SApple OSS Distributions	xorq	%rax,%rax
48*e7776783SApple OSS Distributions	PICIFY(_errno)
49*e7776783SApple OSS Distributions	movl	%eax,(%r11)
50*e7776783SApple OSS Distributions	UNIX_SYSCALL_NONAME(ptrace, 4, cerror)
51*e7776783SApple OSS Distributions	ret
52*e7776783SApple OSS Distributions	UNWIND_EPILOGUE
53*e7776783SApple OSS Distributions
54*e7776783SApple OSS Distributions#elif defined(__arm__)
55*e7776783SApple OSS Distributions
56*e7776783SApple OSS DistributionsMI_ENTRY_POINT(___ptrace)
57*e7776783SApple OSS Distributions	MI_GET_ADDRESS(ip,_errno)
58*e7776783SApple OSS Distributions	str	r8, [sp, #-4]!
59*e7776783SApple OSS Distributions	mov     r8, #0
60*e7776783SApple OSS Distributions	str     r8, [ip]
61*e7776783SApple OSS Distributions	ldr	r8, [sp], #4
62*e7776783SApple OSS Distributions	SYSCALL_NONAME(ptrace, 4, cerror)
63*e7776783SApple OSS Distributions	bx		lr
64*e7776783SApple OSS Distributions
65*e7776783SApple OSS Distributions#elif defined(__arm64__)
66*e7776783SApple OSS Distributions
67*e7776783SApple OSS DistributionsMI_ENTRY_POINT(___ptrace)
68*e7776783SApple OSS Distributions	MI_GET_ADDRESS(x9,_errno)
69*e7776783SApple OSS Distributions	str		wzr, [x9]
70*e7776783SApple OSS Distributions	SYSCALL_NONAME(ptrace, 4, cerror)
71*e7776783SApple OSS Distributions	ret
72*e7776783SApple OSS Distributions
73*e7776783SApple OSS Distributions#else
74*e7776783SApple OSS Distributions#error Unsupported architecture
75*e7776783SApple OSS Distributions#endif
76