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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* 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>
David Howells7d12e782006-10-05 14:55:46 +010015#include <asm/irq_regs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016
17#define in_syscall(regs) (((regs)->tbr & TBR_TT) == TBR_TT_TRAP0)
18
19
20#define PT_PSR 0
21#define PT_ISR 1
22#define PT_CCR 2
23#define PT_CCCR 3
24#define PT_LR 4
25#define PT_LCR 5
26#define PT_PC 6
27
28#define PT__STATUS 7 /* exception status */
29#define PT_SYSCALLNO 8 /* syscall number or -1 */
30#define PT_ORIG_GR8 9 /* saved GR8 for signal handling */
31#define PT_GNER0 10
32#define PT_GNER1 11
33#define PT_IACC0H 12
34#define PT_IACC0L 13
35
36#define PT_GR(j) ( 14 + (j)) /* GRj for 0<=j<=63 */
37#define PT_FR(j) ( 78 + (j)) /* FRj for 0<=j<=63 */
38#define PT_FNER(j) (142 + (j)) /* FNERj for 0<=j<=1 */
39#define PT_MSR(j) (144 + (j)) /* MSRj for 0<=j<=2 */
40#define PT_ACC(j) (146 + (j)) /* ACCj for 0<=j<=7 */
41#define PT_ACCG(jklm) (154 + (jklm)) /* ACCGjklm for 0<=jklm<=1 (reads four regs per slot) */
42#define PT_FSR(j) (156 + (j)) /* FSRj for 0<=j<=0 */
43#define PT__GPEND 78
44#define PT__END 157
45
46#define PT_TBR PT_GR(0)
47#define PT_SP PT_GR(1)
48#define PT_FP PT_GR(2)
49#define PT_PREV_FRAME PT_GR(28) /* previous exception frame pointer (old gr28 value) */
50#define PT_CURR_TASK PT_GR(29) /* current task */
51
52
53/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
54#define PTRACE_GETREGS 12
55#define PTRACE_SETREGS 13
56#define PTRACE_GETFPREGS 14
57#define PTRACE_SETFPREGS 15
58#define PTRACE_GETFDPIC 31 /* get the ELF fdpic loadmap address */
59
60#define PTRACE_GETFDPIC_EXEC 0 /* [addr] request the executable loadmap */
61#define PTRACE_GETFDPIC_INTERP 1 /* [addr] request the interpreter loadmap */
62
63#ifndef __ASSEMBLY__
64
65/*
David Howells84e8cd62006-07-10 04:44:55 -070066 * we dedicate GR28 to keeping a pointer to the current exception frame
67 * - gr28 is destroyed on entry to the kernel from userspace
Linus Torvalds1da177e2005-04-16 15:20:36 -070068 */
69register struct pt_regs *__frame asm("gr28");
Linus Torvalds1da177e2005-04-16 15:20:36 -070070
71#define user_mode(regs) (!((regs)->psr & PSR_S))
72#define instruction_pointer(regs) ((regs)->pc)
73
74extern unsigned long user_stack(const struct pt_regs *);
75extern void show_regs(struct pt_regs *);
76#define profile_pc(regs) ((regs)->pc)
77
78#endif /* !__ASSEMBLY__ */
79#endif /* _ASM_PTRACE_H */