Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/include/asm-arm/ptrace.h |
| 3 | * |
| 4 | * Copyright (C) 1996-2003 Russell King |
| 5 | * |
| 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. |
| 9 | */ |
| 10 | #ifndef __ASM_ARM_PTRACE_H |
| 11 | #define __ASM_ARM_PTRACE_H |
| 12 | |
| 13 | #include <linux/config.h> |
| 14 | |
| 15 | #define PTRACE_GETREGS 12 |
| 16 | #define PTRACE_SETREGS 13 |
| 17 | #define PTRACE_GETFPREGS 14 |
| 18 | #define PTRACE_SETFPREGS 15 |
| 19 | |
| 20 | #define PTRACE_GETWMMXREGS 18 |
| 21 | #define PTRACE_SETWMMXREGS 19 |
| 22 | |
| 23 | #define PTRACE_OLDSETOPTIONS 21 |
| 24 | |
| 25 | #define PTRACE_GET_THREAD_AREA 22 |
| 26 | /* |
| 27 | * PSR bits |
| 28 | */ |
| 29 | #define USR26_MODE 0x00000000 |
| 30 | #define FIQ26_MODE 0x00000001 |
| 31 | #define IRQ26_MODE 0x00000002 |
| 32 | #define SVC26_MODE 0x00000003 |
| 33 | #define USR_MODE 0x00000010 |
| 34 | #define FIQ_MODE 0x00000011 |
| 35 | #define IRQ_MODE 0x00000012 |
| 36 | #define SVC_MODE 0x00000013 |
| 37 | #define ABT_MODE 0x00000017 |
| 38 | #define UND_MODE 0x0000001b |
| 39 | #define SYSTEM_MODE 0x0000001f |
| 40 | #define MODE32_BIT 0x00000010 |
| 41 | #define MODE_MASK 0x0000001f |
| 42 | #define PSR_T_BIT 0x00000020 |
| 43 | #define PSR_F_BIT 0x00000040 |
| 44 | #define PSR_I_BIT 0x00000080 |
| 45 | #define PSR_J_BIT 0x01000000 |
| 46 | #define PSR_Q_BIT 0x08000000 |
| 47 | #define PSR_V_BIT 0x10000000 |
| 48 | #define PSR_C_BIT 0x20000000 |
| 49 | #define PSR_Z_BIT 0x40000000 |
| 50 | #define PSR_N_BIT 0x80000000 |
| 51 | #define PCMASK 0 |
| 52 | |
| 53 | /* |
| 54 | * Groups of PSR bits |
| 55 | */ |
| 56 | #define PSR_f 0xff000000 /* Flags */ |
| 57 | #define PSR_s 0x00ff0000 /* Status */ |
| 58 | #define PSR_x 0x0000ff00 /* Extension */ |
| 59 | #define PSR_c 0x000000ff /* Control */ |
| 60 | |
| 61 | #ifndef __ASSEMBLY__ |
| 62 | |
| 63 | /* this struct defines the way the registers are stored on the |
| 64 | stack during a system call. */ |
| 65 | |
| 66 | struct pt_regs { |
| 67 | long uregs[18]; |
| 68 | }; |
| 69 | |
| 70 | #define ARM_cpsr uregs[16] |
| 71 | #define ARM_pc uregs[15] |
| 72 | #define ARM_lr uregs[14] |
| 73 | #define ARM_sp uregs[13] |
| 74 | #define ARM_ip uregs[12] |
| 75 | #define ARM_fp uregs[11] |
| 76 | #define ARM_r10 uregs[10] |
| 77 | #define ARM_r9 uregs[9] |
| 78 | #define ARM_r8 uregs[8] |
| 79 | #define ARM_r7 uregs[7] |
| 80 | #define ARM_r6 uregs[6] |
| 81 | #define ARM_r5 uregs[5] |
| 82 | #define ARM_r4 uregs[4] |
| 83 | #define ARM_r3 uregs[3] |
| 84 | #define ARM_r2 uregs[2] |
| 85 | #define ARM_r1 uregs[1] |
| 86 | #define ARM_r0 uregs[0] |
| 87 | #define ARM_ORIG_r0 uregs[17] |
| 88 | |
| 89 | #ifdef __KERNEL__ |
| 90 | |
| 91 | #define user_mode(regs) \ |
| 92 | (((regs)->ARM_cpsr & 0xf) == 0) |
| 93 | |
| 94 | #ifdef CONFIG_ARM_THUMB |
| 95 | #define thumb_mode(regs) \ |
| 96 | (((regs)->ARM_cpsr & PSR_T_BIT)) |
| 97 | #else |
| 98 | #define thumb_mode(regs) (0) |
| 99 | #endif |
| 100 | |
| 101 | #define processor_mode(regs) \ |
| 102 | ((regs)->ARM_cpsr & MODE_MASK) |
| 103 | |
| 104 | #define interrupts_enabled(regs) \ |
| 105 | (!((regs)->ARM_cpsr & PSR_I_BIT)) |
| 106 | |
| 107 | #define fast_interrupts_enabled(regs) \ |
| 108 | (!((regs)->ARM_cpsr & PSR_F_BIT)) |
| 109 | |
| 110 | #define condition_codes(regs) \ |
| 111 | ((regs)->ARM_cpsr & (PSR_V_BIT|PSR_C_BIT|PSR_Z_BIT|PSR_N_BIT)) |
| 112 | |
| 113 | /* Are the current registers suitable for user mode? |
| 114 | * (used to maintain security in signal handlers) |
| 115 | */ |
| 116 | static inline int valid_user_regs(struct pt_regs *regs) |
| 117 | { |
| 118 | if (user_mode(regs) && |
| 119 | (regs->ARM_cpsr & (PSR_F_BIT|PSR_I_BIT)) == 0) |
| 120 | return 1; |
| 121 | |
| 122 | /* |
| 123 | * Force CPSR to something logical... |
| 124 | */ |
| 125 | regs->ARM_cpsr &= PSR_f | PSR_s | PSR_x | PSR_T_BIT | MODE32_BIT; |
| 126 | |
| 127 | return 0; |
| 128 | } |
| 129 | |
| 130 | #endif /* __KERNEL__ */ |
| 131 | |
| 132 | #define pc_pointer(v) \ |
| 133 | ((v) & ~PCMASK) |
| 134 | |
| 135 | #define instruction_pointer(regs) \ |
| 136 | (pc_pointer((regs)->ARM_pc)) |
| 137 | |
| 138 | #ifdef CONFIG_SMP |
| 139 | extern unsigned long profile_pc(struct pt_regs *regs); |
| 140 | #else |
| 141 | #define profile_pc(regs) instruction_pointer(regs) |
| 142 | #endif |
| 143 | |
| 144 | #ifdef __KERNEL__ |
Russell King | 652a12e | 2005-04-17 15:50:36 +0100 | [diff] [blame] | 145 | #define predicate(x) ((x) & 0xf0000000) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | #define PREDICATE_ALWAYS 0xe0000000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | #endif |
| 148 | |
| 149 | #endif /* __ASSEMBLY__ */ |
| 150 | |
| 151 | #endif |
| 152 | |