1 /* 2 * Copyright (C) 2001 PPC64 Team, IBM Corp 3 * 4 * This struct defines the way the registers are stored on the 5 * kernel stack during a system call or other kernel entry. 6 * 7 * this should only contain volatile regs 8 * since we can keep non-volatile in the thread_struct 9 * should set this up when only volatiles are saved 10 * by intr code. 11 * 12 * Since this is going on the stack, *CARE MUST BE TAKEN* to insure 13 * that the overall structure is a multiple of 16 bytes in length. 14 * 15 * Note that the offsets of the fields in this struct correspond with 16 * the PT_* values below. This simplifies arch/powerpc/kernel/ptrace.c. 17 * 18 * This program is free software; you can redistribute it and/or 19 * modify it under the terms of the GNU General Public License 20 * as published by the Free Software Foundation; either version 21 * 2 of the License, or (at your option) any later version. 22 */ 23 #ifndef _UAPI_ASM_POWERPC_PTRACE_H 24 #define _UAPI_ASM_POWERPC_PTRACE_H 25 26 27 #include <linux/types.h> 28 29 #ifndef __ASSEMBLY__ 30 31 struct pt_regs { 32 unsigned long gpr[32]; 33 unsigned long nip; 34 unsigned long msr; 35 unsigned long orig_gpr3; /* Used for restarting system calls */ 36 unsigned long ctr; 37 unsigned long link; 38 unsigned long xer; 39 unsigned long ccr; 40 #ifdef __powerpc64__ 41 unsigned long softe; /* Soft enabled/disabled */ 42 #else 43 unsigned long mq; /* 601 only (not used at present) */ 44 /* Used on APUS to hold IPL value. */ 45 #endif 46 unsigned long trap; /* Reason for being here */ 47 /* N.B. for critical exceptions on 4xx, the dar and dsisr 48 fields are overloaded to hold srr0 and srr1. */ 49 unsigned long dar; /* Fault registers */ 50 unsigned long dsisr; /* on 4xx/Book-E used for ESR */ 51 unsigned long result; /* Result of a system call */ 52 }; 53 54 #endif /* __ASSEMBLY__ */ 55 56 57 /* 58 * Offsets used by 'ptrace' system call interface. 59 * These can't be changed without breaking binary compatibility 60 * with MkLinux, etc. 61 */ 62 #define PT_R0 0 63 #define PT_R1 1 64 #define PT_R2 2 65 #define PT_R3 3 66 #define PT_R4 4 67 #define PT_R5 5 68 #define PT_R6 6 69 #define PT_R7 7 70 #define PT_R8 8 71 #define PT_R9 9 72 #define PT_R10 10 73 #define PT_R11 11 74 #define PT_R12 12 75 #define PT_R13 13 76 #define PT_R14 14 77 #define PT_R15 15 78 #define PT_R16 16 79 #define PT_R17 17 80 #define PT_R18 18 81 #define PT_R19 19 82 #define PT_R20 20 83 #define PT_R21 21 84 #define PT_R22 22 85 #define PT_R23 23 86 #define PT_R24 24 87 #define PT_R25 25 88 #define PT_R26 26 89 #define PT_R27 27 90 #define PT_R28 28 91 #define PT_R29 29 92 #define PT_R30 30 93 #define PT_R31 31 94 95 #define PT_NIP 32 96 #define PT_MSR 33 97 #define PT_ORIG_R3 34 98 #define PT_CTR 35 99 #define PT_LNK 36 100 #define PT_XER 37 101 #define PT_CCR 38 102 #ifndef __powerpc64__ 103 #define PT_MQ 39 104 #else 105 #define PT_SOFTE 39 106 #endif 107 #define PT_TRAP 40 108 #define PT_DAR 41 109 #define PT_DSISR 42 110 #define PT_RESULT 43 111 #define PT_DSCR 44 112 #define PT_REGS_COUNT 44 113 114 #define PT_FPR0 48 /* each FP reg occupies 2 slots in this space */ 115 116 #ifndef __powerpc64__ 117 118 #define PT_FPR31 (PT_FPR0 + 2*31) 119 #define PT_FPSCR (PT_FPR0 + 2*32 + 1) 120 121 #else /* __powerpc64__ */ 122 123 #define PT_FPSCR (PT_FPR0 + 32) /* each FP reg occupies 1 slot in 64-bit space */ 124 125 126 #define PT_VR0 82 /* each Vector reg occupies 2 slots in 64-bit */ 127 #define PT_VSCR (PT_VR0 + 32*2 + 1) 128 #define PT_VRSAVE (PT_VR0 + 33*2) 129 130 131 /* 132 * Only store first 32 VSRs here. The second 32 VSRs in VR0-31 133 */ 134 #define PT_VSR0 150 /* each VSR reg occupies 2 slots in 64-bit */ 135 #define PT_VSR31 (PT_VSR0 + 2*31) 136 #endif /* __powerpc64__ */ 137 138 /* 139 * Get/set all the altivec registers vr0..vr31, vscr, vrsave, in one go. 140 * The transfer totals 34 quadword. Quadwords 0-31 contain the 141 * corresponding vector registers. Quadword 32 contains the vscr as the 142 * last word (offset 12) within that quadword. Quadword 33 contains the 143 * vrsave as the first word (offset 0) within the quadword. 144 * 145 * This definition of the VMX state is compatible with the current PPC32 146 * ptrace interface. This allows signal handling and ptrace to use the same 147 * structures. This also simplifies the implementation of a bi-arch 148 * (combined (32- and 64-bit) gdb. 149 */ 150 #define PTRACE_GETVRREGS 0x12 151 #define PTRACE_SETVRREGS 0x13 152 153 /* Get/set all the upper 32-bits of the SPE registers, accumulator, and 154 * spefscr, in one go */ 155 #define PTRACE_GETEVRREGS 0x14 156 #define PTRACE_SETEVRREGS 0x15 157 158 /* Get the first 32 128bit VSX registers */ 159 #define PTRACE_GETVSRREGS 0x1b 160 #define PTRACE_SETVSRREGS 0x1c 161 162 /* 163 * Get or set a debug register. The first 16 are DABR registers and the 164 * second 16 are IABR registers. 165 */ 166 #define PTRACE_GET_DEBUGREG 0x19 167 #define PTRACE_SET_DEBUGREG 0x1a 168 169 /* (new) PTRACE requests using the same numbers as x86 and the same 170 * argument ordering. Additionally, they support more registers too 171 */ 172 #define PTRACE_GETREGS 0xc 173 #define PTRACE_SETREGS 0xd 174 #define PTRACE_GETFPREGS 0xe 175 #define PTRACE_SETFPREGS 0xf 176 #define PTRACE_GETREGS64 0x16 177 #define PTRACE_SETREGS64 0x17 178 179 /* Calls to trace a 64bit program from a 32bit program */ 180 #define PPC_PTRACE_PEEKTEXT_3264 0x95 181 #define PPC_PTRACE_PEEKDATA_3264 0x94 182 #define PPC_PTRACE_POKETEXT_3264 0x93 183 #define PPC_PTRACE_POKEDATA_3264 0x92 184 #define PPC_PTRACE_PEEKUSR_3264 0x91 185 #define PPC_PTRACE_POKEUSR_3264 0x90 186 187 #define PTRACE_SINGLEBLOCK 0x100 /* resume execution until next branch */ 188 189 #define PPC_PTRACE_GETHWDBGINFO 0x89 190 #define PPC_PTRACE_SETHWDEBUG 0x88 191 #define PPC_PTRACE_DELHWDEBUG 0x87 192 193 #ifndef __ASSEMBLY__ 194 195 struct ppc_debug_info { 196 __u32 version; /* Only version 1 exists to date */ 197 __u32 num_instruction_bps; 198 __u32 num_data_bps; 199 __u32 num_condition_regs; 200 __u32 data_bp_alignment; 201 __u32 sizeof_condition; /* size of the DVC register */ 202 __u64 features; 203 }; 204 205 #endif /* __ASSEMBLY__ */ 206 207 /* 208 * features will have bits indication whether there is support for: 209 */ 210 #define PPC_DEBUG_FEATURE_INSN_BP_RANGE 0x0000000000000001 211 #define PPC_DEBUG_FEATURE_INSN_BP_MASK 0x0000000000000002 212 #define PPC_DEBUG_FEATURE_DATA_BP_RANGE 0x0000000000000004 213 #define PPC_DEBUG_FEATURE_DATA_BP_MASK 0x0000000000000008 214 #define PPC_DEBUG_FEATURE_DATA_BP_DAWR 0x0000000000000010 215 216 #ifndef __ASSEMBLY__ 217 218 struct ppc_hw_breakpoint { 219 __u32 version; /* currently, version must be 1 */ 220 __u32 trigger_type; /* only some combinations allowed */ 221 __u32 addr_mode; /* address match mode */ 222 __u32 condition_mode; /* break/watchpoint condition flags */ 223 __u64 addr; /* break/watchpoint address */ 224 __u64 addr2; /* range end or mask */ 225 __u64 condition_value; /* contents of the DVC register */ 226 }; 227 228 #endif /* __ASSEMBLY__ */ 229 230 /* 231 * Trigger Type 232 */ 233 #define PPC_BREAKPOINT_TRIGGER_EXECUTE 0x00000001 234 #define PPC_BREAKPOINT_TRIGGER_READ 0x00000002 235 #define PPC_BREAKPOINT_TRIGGER_WRITE 0x00000004 236 #define PPC_BREAKPOINT_TRIGGER_RW \ 237 (PPC_BREAKPOINT_TRIGGER_READ | PPC_BREAKPOINT_TRIGGER_WRITE) 238 239 /* 240 * Address Mode 241 */ 242 #define PPC_BREAKPOINT_MODE_EXACT 0x00000000 243 #define PPC_BREAKPOINT_MODE_RANGE_INCLUSIVE 0x00000001 244 #define PPC_BREAKPOINT_MODE_RANGE_EXCLUSIVE 0x00000002 245 #define PPC_BREAKPOINT_MODE_MASK 0x00000003 246 247 /* 248 * Condition Mode 249 */ 250 #define PPC_BREAKPOINT_CONDITION_MODE 0x00000003 251 #define PPC_BREAKPOINT_CONDITION_NONE 0x00000000 252 #define PPC_BREAKPOINT_CONDITION_AND 0x00000001 253 #define PPC_BREAKPOINT_CONDITION_EXACT PPC_BREAKPOINT_CONDITION_AND 254 #define PPC_BREAKPOINT_CONDITION_OR 0x00000002 255 #define PPC_BREAKPOINT_CONDITION_AND_OR 0x00000003 256 #define PPC_BREAKPOINT_CONDITION_BE_ALL 0x00ff0000 257 #define PPC_BREAKPOINT_CONDITION_BE_SHIFT 16 258 #define PPC_BREAKPOINT_CONDITION_BE(n) \ 259 (1<<((n)+PPC_BREAKPOINT_CONDITION_BE_SHIFT)) 260 261 #endif /* _UAPI_ASM_POWERPC_PTRACE_H */ 262