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/*

 * linux/include/asm-arm/proc-armo/ptrace.h

 *

 * Copyright (C) 1996 Russell King

 */

#ifndef __ASM_PROC_PTRACE_H

#define __ASM_PROC_PTRACE_H

/* this struct defines the way the registers are stored on the

   stack during a system call. */

struct pt_regs {

        long uregs[17];

};

#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[16] /* -1 */

#define USR26_MODE      0x00

#define FIQ26_MODE      0x01

#define IRQ26_MODE      0x02

#define SVC26_MODE      0x03

#define MODE_MASK       0x03

#define F_BIT           (1 << 26)

#define I_BIT           (1 << 27)

#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 user_mode(regs) \

        (((regs)->ARM_pc & MODE_MASK) == USR26_MODE)

#define processor_mode(regs) \

        ((regs)->ARM_pc & MODE_MASK)

#define interrupts_enabled(regs) \

        (!((regs)->ARM_pc & I_BIT))

#define fast_interrupts_enabled(regs) \

        (!((regs)->ARM_pc & F_BIT))

#define condition_codes(regs) \

        ((regs)->ARM_pc & (CC_V_BIT|CC_C_BIT|CC_Z_BIT|CC_N_BIT))

#define instruction_pointer(regs)       ((regs)->ARM_pc & 0x03fffffc)

#define pc_pointer(v)                   ((v) & 0x03fffffc)

#define valid_user_regs(regs) \

        (user_mode(regs) && ((regs)->ARM_sp & 3) == 0)

#endif