arch/nios2/include/uapi/asm/ptrace.h

   1 /*
   2  * Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
   3  * Copyright (C) 2004 Microtronix Datacom Ltd
   4  *
   5  * based on m68k asm/processor.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
  12 #ifndef _UAPI_ASM_NIOS2_PTRACE_H
  13 #define _UAPI_ASM_NIOS2_PTRACE_H
  14
  15 #ifndef __ASSEMBLY__
  16
  17 /*
  18  * Register numbers used by 'ptrace' system call interface.
  19  */
  20
  21 /* GP registers */
  22 #define PTR_R0          0
  23 #define PTR_R1          1
  24 #define PTR_R2          2
  25 #define PTR_R3          3
  26 #define PTR_R4          4
  27 #define PTR_R5          5
  28 #define PTR_R6          6
  29 #define PTR_R7          7
  30 #define PTR_R8          8
  31 #define PTR_R9          9
  32 #define PTR_R10         10
  33 #define PTR_R11         11
  34 #define PTR_R12         12
  35 #define PTR_R13         13
  36 #define PTR_R14         14
  37 #define PTR_R15         15
  38 #define PTR_R16         16
  39 #define PTR_R17         17
  40 #define PTR_R18         18
  41 #define PTR_R19         19
  42 #define PTR_R20         20
  43 #define PTR_R21         21
  44 #define PTR_R22         22
  45 #define PTR_R23         23
  46 #define PTR_R24         24
  47 #define PTR_R25         25
  48 #define PTR_GP          26
  49 #define PTR_SP          27
  50 #define PTR_FP          28
  51 #define PTR_EA          29
  52 #define PTR_BA          30
  53 #define PTR_RA          31
  54 /* Control registers */
  55 #define PTR_PC          32
  56 #define PTR_STATUS      33
  57 #define PTR_ESTATUS     34
  58 #define PTR_BSTATUS     35
  59 #define PTR_IENABLE     36
  60 #define PTR_IPENDING    37
  61 #define PTR_CPUID       38
  62 #define PTR_CTL6        39
  63 #define PTR_CTL7        40
  64 #define PTR_PTEADDR     41
  65 #define PTR_TLBACC      42
  66 #define PTR_TLBMISC     43
  67
  68 #define NUM_PTRACE_REG (PTR_TLBMISC + 1)
  69
  70 /* this struct defines the way the registers are stored on the
  71    stack during a system call.
  72
  73    There is a fake_regs in setup.c that has to match pt_regs.*/
  74
  75 struct pt_regs {
  76         unsigned long  r8;              /* r8-r15 Caller-saved GP registers */
  77         unsigned long  r9;
  78         unsigned long  r10;
  79         unsigned long  r11;
  80         unsigned long  r12;
  81         unsigned long  r13;
  82         unsigned long  r14;
  83         unsigned long  r15;
  84         unsigned long  r1;              /* Assembler temporary */
  85         unsigned long  r2;              /* Retval LS 32bits */
  86         unsigned long  r3;              /* Retval MS 32bits */
  87         unsigned long  r4;              /* r4-r7 Register arguments */
  88         unsigned long  r5;
  89         unsigned long  r6;
  90         unsigned long  r7;
  91         unsigned long  orig_r2;         /* Copy of r2 ?? */
  92         unsigned long  ra;              /* Return address */
  93         unsigned long  fp;              /* Frame pointer */
  94         unsigned long  sp;              /* Stack pointer */
  95         unsigned long  gp;              /* Global pointer */
  96         unsigned long  estatus;
  97         unsigned long  ea;              /* Exception return address (pc) */
  98         unsigned long  orig_r7;
  99 };
 100
 101 /*
 102  * This is the extended stack used by signal handlers and the context
 103  * switcher: it's pushed after the normal "struct pt_regs".
 104  */
 105 struct switch_stack {
 106         unsigned long  r16;             /* r16-r23 Callee-saved GP registers */
 107         unsigned long  r17;
 108         unsigned long  r18;
 109         unsigned long  r19;
 110         unsigned long  r20;
 111         unsigned long  r21;
 112         unsigned long  r22;
 113         unsigned long  r23;
 114         unsigned long  fp;
 115         unsigned long  gp;
 116         unsigned long  ra;
 117 };
 118
 119 #endif /* __ASSEMBLY__ */
 120 #endif /* _UAPI_ASM_NIOS2_PTRACE_H */