LXR linux/arch/m32r/include/asm/ptrace.h

   1#ifndef _ASM_M32R_PTRACE_H
   2#define _ASM_M32R_PTRACE_H
   3
   4/*
   5 * linux/include/asm-m32r/ptrace.h
   6 *
   7 * This file is subject to the terms and conditions of the GNU General Public
   8 * License.  See the file "COPYING" in the main directory of this archive
   9 * for more details.
  10 *
  11 * M32R version:
  12 *   Copyright (C) 2001-2002, 2004  Hirokazu Takata <takata at linux-m32r.org>
  13 */
  14
  15/* 0 - 13 are integer registers (general purpose registers).  */
  16#define PT_R4           0
  17#define PT_R5           1
  18#define PT_R6           2
  19#define PT_REGS         3
  20#define PT_R0           4
  21#define PT_R1           5
  22#define PT_R2           6
  23#define PT_R3           7
  24#define PT_R7           8
  25#define PT_R8           9
  26#define PT_R9           10
  27#define PT_R10          11
  28#define PT_R11          12
  29#define PT_R12          13
  30#define PT_SYSCNR       14
  31#define PT_R13          PT_FP
  32#define PT_R14          PT_LR
  33#define PT_R15          PT_SP
  34
  35/* processor status and miscellaneous context registers.  */
  36#define PT_ACC0H        15
  37#define PT_ACC0L        16
  38#define PT_ACC1H        17      /* ISA_DSP_LEVEL2 only */
  39#define PT_ACC1L        18      /* ISA_DSP_LEVEL2 only */
  40#define PT_PSW          19
  41#define PT_BPC          20
  42#define PT_BBPSW        21
  43#define PT_BBPC         22
  44#define PT_SPU          23
  45#define PT_FP           24
  46#define PT_LR           25
  47#define PT_SPI          26
  48#define PT_ORIGR0       27
  49
  50/* virtual pt_reg entry for gdb */
  51#define PT_PC           30
  52#define PT_CBR          31
  53#define PT_EVB          32
  54
  55
  56/* Control registers.  */
  57#define SPR_CR0 PT_PSW
  58#define SPR_CR1 PT_CBR          /* read only */
  59#define SPR_CR2 PT_SPI
  60#define SPR_CR3 PT_SPU
  61#define SPR_CR4
  62#define SPR_CR5 PT_EVB          /* part of M32R/E, M32R/I core only */
  63#define SPR_CR6 PT_BPC
  64#define SPR_CR7
  65#define SPR_CR8 PT_BBPSW
  66#define SPR_CR9
  67#define SPR_CR10
  68#define SPR_CR11
  69#define SPR_CR12
  70#define SPR_CR13 PT_WR
  71#define SPR_CR14 PT_BBPC
  72#define SPR_CR15
  73
  74/* this struct defines the way the registers are stored on the
  75   stack during a system call. */
  76struct pt_regs {
  77        /* Saved main processor registers. */
  78        unsigned long r4;
  79        unsigned long r5;
  80        unsigned long r6;
  81        struct pt_regs *pt_regs;
  82        unsigned long r0;
  83        unsigned long r1;
  84        unsigned long r2;
  85        unsigned long r3;
  86        unsigned long r7;
  87        unsigned long r8;
  88        unsigned long r9;
  89        unsigned long r10;
  90        unsigned long r11;
  91        unsigned long r12;
  92        long syscall_nr;
  93
  94        /* Saved main processor status and miscellaneous context registers. */
  95        unsigned long acc0h;
  96        unsigned long acc0l;
  97        unsigned long acc1h;    /* ISA_DSP_LEVEL2 only */
  98        unsigned long acc1l;    /* ISA_DSP_LEVEL2 only */
  99        unsigned long psw;
 100        unsigned long bpc;              /* saved PC for TRAP syscalls */
 101        unsigned long bbpsw;
 102        unsigned long bbpc;
 103        unsigned long spu;              /* saved user stack */
 104        unsigned long fp;
 105        unsigned long lr;               /* saved PC for JL syscalls */
 106        unsigned long spi;              /* saved kernel stack */
 107        unsigned long orig_r0;
 108};
 109
 110/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
 111#define PTRACE_GETREGS          12
 112#define PTRACE_SETREGS          13
 113
 114#define PTRACE_OLDSETOPTIONS    21
 115
 116#ifdef __KERNEL__
 117
 118#include <asm/m32r.h>           /* M32R_PSW_BSM, M32R_PSW_BPM */
 119
 120#define arch_has_single_step() (1)
 121
 122struct task_struct;
 123extern void init_debug_traps(struct task_struct *);
 124#define arch_ptrace_attach(child) \
 125        init_debug_traps(child)
 126
 127#if defined(CONFIG_ISA_M32R2) || defined(CONFIG_CHIP_VDEC2)
 128#define user_mode(regs) ((M32R_PSW_BPM & (regs)->psw) != 0)
 129#elif defined(CONFIG_ISA_M32R)
 130#define user_mode(regs) ((M32R_PSW_BSM & (regs)->psw) != 0)
 131#else
 132#error unknown isa configuration
 133#endif
 134
 135#define instruction_pointer(regs) ((regs)->bpc)
 136#define profile_pc(regs) instruction_pointer(regs)
 137
 138extern void withdraw_debug_trap(struct pt_regs *regs);
 139
 140#define task_pt_regs(task) \
 141        ((struct pt_regs *)(task_stack_page(task) + THREAD_SIZE) - 1)
 142
 143#endif /* __KERNEL */
 144
 145#endif /* _ASM_M32R_PTRACE_H */
 146