2 * linux/include/asm-arm/ptrace.h
4 * Copyright (C) 1996-2003 Russell King
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 #ifndef __ASM_ARM_PTRACE_H
11 #define __ASM_ARM_PTRACE_H
13 #include <linux/config.h>
15 #define PTRACE_GETREGS 12
16 #define PTRACE_SETREGS 13
17 #define PTRACE_GETFPREGS 14
18 #define PTRACE_SETFPREGS 15
20 #define PTRACE_GETWMMXREGS 18
21 #define PTRACE_SETWMMXREGS 19
23 #define PTRACE_OLDSETOPTIONS 21
25 #define PTRACE_GET_THREAD_AREA 22
27 #define PTRACE_SET_SYSCALL 23
32 #define USR26_MODE 0x00000000
33 #define FIQ26_MODE 0x00000001
34 #define IRQ26_MODE 0x00000002
35 #define SVC26_MODE 0x00000003
36 #define USR_MODE 0x00000010
37 #define FIQ_MODE 0x00000011
38 #define IRQ_MODE 0x00000012
39 #define SVC_MODE 0x00000013
40 #define ABT_MODE 0x00000017
41 #define UND_MODE 0x0000001b
42 #define SYSTEM_MODE 0x0000001f
43 #define MODE32_BIT 0x00000010
44 #define MODE_MASK 0x0000001f
45 #define PSR_T_BIT 0x00000020
46 #define PSR_F_BIT 0x00000040
47 #define PSR_I_BIT 0x00000080
48 #define PSR_J_BIT 0x01000000
49 #define PSR_Q_BIT 0x08000000
50 #define PSR_V_BIT 0x10000000
51 #define PSR_C_BIT 0x20000000
52 #define PSR_Z_BIT 0x40000000
53 #define PSR_N_BIT 0x80000000
59 #define PSR_f 0xff000000 /* Flags */
60 #define PSR_s 0x00ff0000 /* Status */
61 #define PSR_x 0x0000ff00 /* Extension */
62 #define PSR_c 0x000000ff /* Control */
67 * This struct defines the way the registers are stored on the
68 * stack during a system call. Note that sizeof(struct pt_regs)
69 * has to be a multiple of 8.
75 #define ARM_cpsr uregs[16]
76 #define ARM_pc uregs[15]
77 #define ARM_lr uregs[14]
78 #define ARM_sp uregs[13]
79 #define ARM_ip uregs[12]
80 #define ARM_fp uregs[11]
81 #define ARM_r10 uregs[10]
82 #define ARM_r9 uregs[9]
83 #define ARM_r8 uregs[8]
84 #define ARM_r7 uregs[7]
85 #define ARM_r6 uregs[6]
86 #define ARM_r5 uregs[5]
87 #define ARM_r4 uregs[4]
88 #define ARM_r3 uregs[3]
89 #define ARM_r2 uregs[2]
90 #define ARM_r1 uregs[1]
91 #define ARM_r0 uregs[0]
92 #define ARM_ORIG_r0 uregs[17]
96 #define user_mode(regs) \
97 (((regs)->ARM_cpsr & 0xf) == 0)
99 #ifdef CONFIG_ARM_THUMB
100 #define thumb_mode(regs) \
101 (((regs)->ARM_cpsr & PSR_T_BIT))
103 #define thumb_mode(regs) (0)
106 #define processor_mode(regs) \
107 ((regs)->ARM_cpsr & MODE_MASK)
109 #define interrupts_enabled(regs) \
110 (!((regs)->ARM_cpsr & PSR_I_BIT))
112 #define fast_interrupts_enabled(regs) \
113 (!((regs)->ARM_cpsr & PSR_F_BIT))
115 #define condition_codes(regs) \
116 ((regs)->ARM_cpsr & (PSR_V_BIT|PSR_C_BIT|PSR_Z_BIT|PSR_N_BIT))
118 /* Are the current registers suitable for user mode?
119 * (used to maintain security in signal handlers)
121 static inline int valid_user_regs(struct pt_regs *regs)
123 if (user_mode(regs) &&
124 (regs->ARM_cpsr & (PSR_F_BIT|PSR_I_BIT)) == 0)
128 * Force CPSR to something logical...
130 regs->ARM_cpsr &= PSR_f | PSR_s | PSR_x | PSR_T_BIT | MODE32_BIT;
135 #endif /* __KERNEL__ */
137 #define pc_pointer(v) \
140 #define instruction_pointer(regs) \
141 (pc_pointer((regs)->ARM_pc))
144 extern unsigned long profile_pc(struct pt_regs *regs);
146 #define profile_pc(regs) instruction_pointer(regs)
150 #define predicate(x) ((x) & 0xf0000000)
151 #define PREDICATE_ALWAYS 0xe0000000
154 #endif /* __ASSEMBLY__ */