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 */ 121