2 * linux/include/asm-arm/proc-armv/ptrace.h
4 * Copyright (C) 1996-1999 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_PROC_PTRACE_H
11 #define __ASM_PROC_PTRACE_H
20 * This struct defines the way the registers are stored
21 * on the stack during an exception.
25 unsigned long regs[31];
28 #endif /* __ASSEMBLY__ */
30 #else /* CONFIG_ARM64 */
32 #define USR26_MODE 0x00
33 #define FIQ26_MODE 0x01
34 #define IRQ26_MODE 0x02
35 #define SVC26_MODE 0x03
43 #define SYSTEM_MODE 0x1f
44 #define MODE_MASK 0x1f
49 #define CC_V_BIT (1 << 28)
50 #define CC_C_BIT (1 << 29)
51 #define CC_Z_BIT (1 << 30)
52 #define CC_N_BIT (1 << 31)
57 /* this struct defines the way the registers are stored on the
58 stack during a system call. */
64 #define ARM_cpsr uregs[16]
65 #define ARM_pc uregs[15]
66 #define ARM_lr uregs[14]
67 #define ARM_sp uregs[13]
68 #define ARM_ip uregs[12]
69 #define ARM_fp uregs[11]
70 #define ARM_r10 uregs[10]
71 #define ARM_r9 uregs[9]
72 #define ARM_r8 uregs[8]
73 #define ARM_r7 uregs[7]
74 #define ARM_r6 uregs[6]
75 #define ARM_r5 uregs[5]
76 #define ARM_r4 uregs[4]
77 #define ARM_r3 uregs[3]
78 #define ARM_r2 uregs[2]
79 #define ARM_r1 uregs[1]
80 #define ARM_r0 uregs[0]
81 #define ARM_ORIG_r0 uregs[17]
85 #define user_mode(regs) \
86 (((regs)->ARM_cpsr & 0xf) == 0)
88 #ifdef CONFIG_ARM_THUMB
89 #define thumb_mode(regs) \
90 (((regs)->ARM_cpsr & T_BIT))
92 #define thumb_mode(regs) (0)
95 #define processor_mode(regs) \
96 ((regs)->ARM_cpsr & MODE_MASK)
98 #define interrupts_enabled(regs) \
99 (!((regs)->ARM_cpsr & I_BIT))
101 #define fast_interrupts_enabled(regs) \
102 (!((regs)->ARM_cpsr & F_BIT))
104 #define condition_codes(regs) \
105 ((regs)->ARM_cpsr & (CC_V_BIT|CC_C_BIT|CC_Z_BIT|CC_N_BIT))
107 /* Are the current registers suitable for user mode?
108 * (used to maintain security in signal handlers)
110 static inline int valid_user_regs(struct pt_regs *regs)
112 if ((regs->ARM_cpsr & 0xf) == 0 &&
113 (regs->ARM_cpsr & (F_BIT|I_BIT)) == 0)
117 * Force CPSR to something logical...
119 regs->ARM_cpsr &= (CC_V_BIT|CC_C_BIT|CC_Z_BIT|CC_N_BIT|0x10);
124 #endif /* __KERNEL__ */
126 #endif /* __ASSEMBLY__ */
128 #endif /* CONFIG_ARM64 */