- /*
- * linux/include/asm-arm/proc-armv/ptrace.h
- *
- * Copyright (C) 1996-1999 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
- #ifndef __ASM_PROC_PTRACE_H
- #define __ASM_PROC_PTRACE_H
- #include <linux/config.h>
- #define USR26_MODE 0x00
- #define FIQ26_MODE 0x01
- #define IRQ26_MODE 0x02
- #define SVC26_MODE 0x03
- #define USR_MODE 0x10
- #define FIQ_MODE 0x11
- #define IRQ_MODE 0x12
- #define SVC_MODE 0x13
- #define ABT_MODE 0x17
- #define UND_MODE 0x1b
- #define SYSTEM_MODE 0x1f
- #define MODE_MASK 0x1f
- #define T_BIT 0x20
- #define F_BIT 0x40
- #define I_BIT 0x80
- #define CC_V_BIT (1 << 28)
- #define CC_C_BIT (1 << 29)
- #define CC_Z_BIT (1 << 30)
- #define CC_N_BIT (1 << 31)
- #define PCMASK 0
- #ifndef __ASSEMBLY__
- /* this struct defines the way the registers are stored on the
- stack during a system call. */
- struct pt_regs {
- long uregs[18];
- };
- #define ARM_cpsr uregs[16]
- #define ARM_pc uregs[15]
- #define ARM_lr uregs[14]
- #define ARM_sp uregs[13]
- #define ARM_ip uregs[12]
- #define ARM_fp uregs[11]
- #define ARM_r10 uregs[10]
- #define ARM_r9 uregs[9]
- #define ARM_r8 uregs[8]
- #define ARM_r7 uregs[7]
- #define ARM_r6 uregs[6]
- #define ARM_r5 uregs[5]
- #define ARM_r4 uregs[4]
- #define ARM_r3 uregs[3]
- #define ARM_r2 uregs[2]
- #define ARM_r1 uregs[1]
- #define ARM_r0 uregs[0]
- #define ARM_ORIG_r0 uregs[17]
- #ifdef __KERNEL__
- #define user_mode(regs)
- (((regs)->ARM_cpsr & 0xf) == 0)
- #ifdef CONFIG_ARM_THUMB
- #define thumb_mode(regs)
- (((regs)->ARM_cpsr & T_BIT))
- #else
- #define thumb_mode(regs) (0)
- #endif
- #define processor_mode(regs)
- ((regs)->ARM_cpsr & MODE_MASK)
- #define interrupts_enabled(regs)
- (!((regs)->ARM_cpsr & I_BIT))
- #define fast_interrupts_enabled(regs)
- (!((regs)->ARM_cpsr & F_BIT))
- #define condition_codes(regs)
- ((regs)->ARM_cpsr & (CC_V_BIT|CC_C_BIT|CC_Z_BIT|CC_N_BIT))
- /* Are the current registers suitable for user mode?
- * (used to maintain security in signal handlers)
- */
- static inline int valid_user_regs(struct pt_regs *regs)
- {
- if ((regs->ARM_cpsr & 0xf) == 0 &&
- (regs->ARM_cpsr & (F_BIT|I_BIT)) == 0)
- return 1;
- /*
- * Force CPSR to something logical...
- */
- regs->ARM_cpsr &= (CC_V_BIT|CC_C_BIT|CC_Z_BIT|CC_N_BIT|0x10);
- return 0;
- }
- #endif /* __KERNEL__ */
- #endif /* __ASSEMBLY__ */
- #endif