tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* ptrace.h: ptrace() relevant definitions
2 *
3 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11#ifndef _ASM_PTRACE_H
12#define _ASM_PTRACE_H
13
14#include <asm/registers.h>
15
16#define in_syscall(regs) (((regs)->tbr & TBR_TT) == TBR_TT_TRAP0)
17
18
19#define PT_PSR 0
20#define PT_ISR 1
21#define PT_CCR 2
22#define PT_CCCR 3
23#define PT_LR 4
24#define PT_LCR 5
25#define PT_PC 6
26
27#define PT__STATUS 7 /* exception status */
28#define PT_SYSCALLNO 8 /* syscall number or -1 */
29#define PT_ORIG_GR8 9 /* saved GR8 for signal handling */
30#define PT_GNER0 10
31#define PT_GNER1 11
32#define PT_IACC0H 12
33#define PT_IACC0L 13
34
35#define PT_GR(j) ( 14 + (j)) /* GRj for 0<=j<=63 */
36#define PT_FR(j) ( 78 + (j)) /* FRj for 0<=j<=63 */
37#define PT_FNER(j) (142 + (j)) /* FNERj for 0<=j<=1 */
38#define PT_MSR(j) (144 + (j)) /* MSRj for 0<=j<=2 */
39#define PT_ACC(j) (146 + (j)) /* ACCj for 0<=j<=7 */
40#define PT_ACCG(jklm) (154 + (jklm)) /* ACCGjklm for 0<=jklm<=1 (reads four regs per slot) */
41#define PT_FSR(j) (156 + (j)) /* FSRj for 0<=j<=0 */
42#define PT__GPEND 78
43#define PT__END 157
44
45#define PT_TBR PT_GR(0)
46#define PT_SP PT_GR(1)
47#define PT_FP PT_GR(2)
48#define PT_PREV_FRAME PT_GR(28) /* previous exception frame pointer (old gr28 value) */
49#define PT_CURR_TASK PT_GR(29) /* current task */
50
51
52/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
53#define PTRACE_GETREGS 12
54#define PTRACE_SETREGS 13
55#define PTRACE_GETFPREGS 14
56#define PTRACE_SETFPREGS 15
57#define PTRACE_GETFDPIC 31 /* get the ELF fdpic loadmap address */
58
59#define PTRACE_GETFDPIC_EXEC 0 /* [addr] request the executable loadmap */
60#define PTRACE_GETFDPIC_INTERP 1 /* [addr] request the interpreter loadmap */
61
62#ifndef __ASSEMBLY__
63
64/*
65 * dedicate GR28; to keeping the a pointer to the current exception frame
66 */
67register struct pt_regs *__frame asm("gr28");
68register struct pt_regs *__debug_frame asm("gr31");
69
70#ifndef container_of
71#define container_of(ptr, type, member) ({ \
72 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
73 (type *)( (char *)__mptr - offsetof(type,member) );})
74#endif
75
76#define __debug_regs container_of(__debug_frame, struct pt_debug_regs, normal_regs)
77
78#define user_mode(regs) (!((regs)->psr & PSR_S))
79#define instruction_pointer(regs) ((regs)->pc)
80
81extern unsigned long user_stack(const struct pt_regs *);
82extern void show_regs(struct pt_regs *);
83#define profile_pc(regs) ((regs)->pc)
84
85#endif /* !__ASSEMBLY__ */
86#endif /* _ASM_PTRACE_H */