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

   1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
   2 /*
   3  * Copyright (C) 2001 PPC64 Team, IBM Corp
   4  *
   5  * This struct defines the way the registers are stored on the
   6  * kernel stack during a system call or other kernel entry.
   7  *
   8  * this should only contain volatile regs
   9  * since we can keep non-volatile in the thread_struct
  10  * should set this up when only volatiles are saved
  11  * by intr code.
  12  *
  13  * Since this is going on the stack, *CARE MUST BE TAKEN* to insure
  14  * that the overall structure is a multiple of 16 bytes in length.
  15  *
  16  * Note that the offsets of the fields in this struct correspond with
  17  * the PT_* values below.  This simplifies arch/powerpc/kernel/ptrace.c.
  18  *
  19  * This program is free software; you can redistribute it and/or
  20  * modify it under the terms of the GNU General Public License
  21  * as published by the Free Software Foundation; either version
  22  * 2 of the License, or (at your option) any later version.
  23  */
  24 #ifndef _UAPI_ASM_POWERPC_PTRACE_H
  25 #define _UAPI_ASM_POWERPC_PTRACE_H
  26
  27
  28 #include <linux/types.h>
  29
  30 #ifndef __ASSEMBLY__
  31
  32 #ifdef __KERNEL__
  33 struct user_pt_regs
  34 #else
  35 struct pt_regs
  36 #endif
  37 {
  38         unsigned long gpr[32];
  39         unsigned long nip;
  40         unsigned long msr;
  41         unsigned long orig_gpr3;        /* Used for restarting system calls */
  42         unsigned long ctr;
  43         unsigned long link;
  44         unsigned long xer;
  45         unsigned long ccr;
  46 #ifdef __powerpc64__
  47         unsigned long softe;            /* Soft enabled/disabled */
  48 #else
  49         unsigned long mq;               /* 601 only (not used at present) */
  50                                         /* Used on APUS to hold IPL value. */
  51 #endif
  52         unsigned long trap;             /* Reason for being here */
  53         /* N.B. for critical exceptions on 4xx, the dar and dsisr
  54            fields are overloaded to hold srr0 and srr1. */
  55         unsigned long dar;              /* Fault registers */
  56         unsigned long dsisr;            /* on 4xx/Book-E used for ESR */
  57         unsigned long result;           /* Result of a system call */
  58 };
  59
  60 #endif /* __ASSEMBLY__ */
  61
  62
  63 /*
  64  * Offsets used by 'ptrace' system call interface.
  65  * These can't be changed without breaking binary compatibility
  66  * with MkLinux, etc.
  67  */
  68 #define PT_R0   0
  69 #define PT_R1   1
  70 #define PT_R2   2
  71 #define PT_R3   3
  72 #define PT_R4   4
  73 #define PT_R5   5
  74 #define PT_R6   6
  75 #define PT_R7   7
  76 #define PT_R8   8
  77 #define PT_R9   9
  78 #define PT_R10  10
  79 #define PT_R11  11
  80 #define PT_R12  12
  81 #define PT_R13  13
  82 #define PT_R14  14
  83 #define PT_R15  15
  84 #define PT_R16  16
  85 #define PT_R17  17
  86 #define PT_R18  18
  87 #define PT_R19  19
  88 #define PT_R20  20
  89 #define PT_R21  21
  90 #define PT_R22  22
  91 #define PT_R23  23
  92 #define PT_R24  24
  93 #define PT_R25  25
  94 #define PT_R26  26
  95 #define PT_R27  27
  96 #define PT_R28  28
  97 #define PT_R29  29
  98 #define PT_R30  30
  99 #define PT_R31  31
 100
 101 #define PT_NIP  32
 102 #define PT_MSR  33
 103 #define PT_ORIG_R3 34
 104 #define PT_CTR  35
 105 #define PT_LNK  36
 106 #define PT_XER  37
 107 #define PT_CCR  38
 108 #ifndef __powerpc64__
 109 #define PT_MQ   39
 110 #else
 111 #define PT_SOFTE 39
 112 #endif
 113 #define PT_TRAP 40
 114 #define PT_DAR  41
 115 #define PT_DSISR 42
 116 #define PT_RESULT 43
 117 #define PT_DSCR 44
 118 #define PT_REGS_COUNT 44
 119
 120 #define PT_FPR0 48      /* each FP reg occupies 2 slots in this space */
 121
 122 #ifndef __powerpc64__
 123
 124 #define PT_FPR31 (PT_FPR0 + 2*31)
 125 #define PT_FPSCR (PT_FPR0 + 2*32 + 1)
 126
 127 #else /* __powerpc64__ */
 128
 129 #define PT_FPSCR (PT_FPR0 + 32) /* each FP reg occupies 1 slot in 64-bit space */
 130
 131
 132 #define PT_VR0 82       /* each Vector reg occupies 2 slots in 64-bit */
 133 #define PT_VSCR (PT_VR0 + 32*2 + 1)
 134 #define PT_VRSAVE (PT_VR0 + 33*2)
 135
 136
 137 /*
 138  * Only store first 32 VSRs here. The second 32 VSRs in VR0-31
 139  */
 140 #define PT_VSR0 150     /* each VSR reg occupies 2 slots in 64-bit */
 141 #define PT_VSR31 (PT_VSR0 + 2*31)
 142 #endif /* __powerpc64__ */
 143
 144 /*
 145  * Get/set all the altivec registers v0..v31, vscr, vrsave, in one go.
 146  * The transfer totals 34 quadword.  Quadwords 0-31 contain the
 147  * corresponding vector registers.  Quadword 32 contains the vscr as the
 148  * last word (offset 12) within that quadword.  Quadword 33 contains the
 149  * vrsave as the first word (offset 0) within the quadword.
 150  *
 151  * This definition of the VMX state is compatible with the current PPC32
 152  * ptrace interface.  This allows signal handling and ptrace to use the same
 153  * structures.  This also simplifies the implementation of a bi-arch
 154  * (combined (32- and 64-bit) gdb.
 155  */
 156 #define PTRACE_GETVRREGS        0x12
 157 #define PTRACE_SETVRREGS        0x13
 158
 159 /* Get/set all the upper 32-bits of the SPE registers, accumulator, and
 160  * spefscr, in one go */
 161 #define PTRACE_GETEVRREGS       0x14
 162 #define PTRACE_SETEVRREGS       0x15
 163
 164 /* Get the first 32 128bit VSX registers */
 165 #define PTRACE_GETVSRREGS       0x1b
 166 #define PTRACE_SETVSRREGS       0x1c
 167
 168 /* Syscall emulation defines */
 169 #define PTRACE_SYSEMU                   0x1d
 170 #define PTRACE_SYSEMU_SINGLESTEP        0x1e
 171
 172 /*
 173  * Get or set a debug register. The first 16 are DABR registers and the
 174  * second 16 are IABR registers.
 175  */
 176 #define PTRACE_GET_DEBUGREG     0x19
 177 #define PTRACE_SET_DEBUGREG     0x1a
 178
 179 /* (new) PTRACE requests using the same numbers as x86 and the same
 180  * argument ordering. Additionally, they support more registers too
 181  */
 182 #define PTRACE_GETREGS            0xc
 183 #define PTRACE_SETREGS            0xd
 184 #define PTRACE_GETFPREGS          0xe
 185 #define PTRACE_SETFPREGS          0xf
 186 #define PTRACE_GETREGS64          0x16
 187 #define PTRACE_SETREGS64          0x17
 188
 189 /* Calls to trace a 64bit program from a 32bit program */
 190 #define PPC_PTRACE_PEEKTEXT_3264 0x95
 191 #define PPC_PTRACE_PEEKDATA_3264 0x94
 192 #define PPC_PTRACE_POKETEXT_3264 0x93
 193 #define PPC_PTRACE_POKEDATA_3264 0x92
 194 #define PPC_PTRACE_PEEKUSR_3264  0x91
 195 #define PPC_PTRACE_POKEUSR_3264  0x90
 196
 197 #define PTRACE_SINGLEBLOCK      0x100   /* resume execution until next branch */
 198
 199 #define PPC_PTRACE_GETHWDBGINFO 0x89
 200 #define PPC_PTRACE_SETHWDEBUG   0x88
 201 #define PPC_PTRACE_DELHWDEBUG   0x87
 202
 203 #ifndef __ASSEMBLY__
 204
 205 struct ppc_debug_info {
 206         __u32 version;                  /* Only version 1 exists to date */
 207         __u32 num_instruction_bps;
 208         __u32 num_data_bps;
 209         __u32 num_condition_regs;
 210         __u32 data_bp_alignment;
 211         __u32 sizeof_condition;         /* size of the DVC register */
 212         __u64 features;
 213 };
 214
 215 #endif /* __ASSEMBLY__ */
 216
 217 /*
 218  * features will have bits indication whether there is support for:
 219  */
 220 #define PPC_DEBUG_FEATURE_INSN_BP_RANGE         0x0000000000000001
 221 #define PPC_DEBUG_FEATURE_INSN_BP_MASK          0x0000000000000002
 222 #define PPC_DEBUG_FEATURE_DATA_BP_RANGE         0x0000000000000004
 223 #define PPC_DEBUG_FEATURE_DATA_BP_MASK          0x0000000000000008
 224 #define PPC_DEBUG_FEATURE_DATA_BP_DAWR          0x0000000000000010
 225 #define PPC_DEBUG_FEATURE_DATA_BP_ARCH_31       0x0000000000000020
 226
 227 #ifndef __ASSEMBLY__
 228
 229 struct ppc_hw_breakpoint {
 230         __u32 version;          /* currently, version must be 1 */
 231         __u32 trigger_type;     /* only some combinations allowed */
 232         __u32 addr_mode;        /* address match mode */
 233         __u32 condition_mode;   /* break/watchpoint condition flags */
 234         __u64 addr;             /* break/watchpoint address */
 235         __u64 addr2;            /* range end or mask */
 236         __u64 condition_value;  /* contents of the DVC register */
 237 };
 238
 239 #endif /* __ASSEMBLY__ */
 240
 241 /*
 242  * Trigger Type
 243  */
 244 #define PPC_BREAKPOINT_TRIGGER_EXECUTE  0x00000001
 245 #define PPC_BREAKPOINT_TRIGGER_READ     0x00000002
 246 #define PPC_BREAKPOINT_TRIGGER_WRITE    0x00000004
 247 #define PPC_BREAKPOINT_TRIGGER_RW       \
 248         (PPC_BREAKPOINT_TRIGGER_READ | PPC_BREAKPOINT_TRIGGER_WRITE)
 249
 250 /*
 251  * Address Mode
 252  */
 253 #define PPC_BREAKPOINT_MODE_EXACT               0x00000000
 254 #define PPC_BREAKPOINT_MODE_RANGE_INCLUSIVE     0x00000001
 255 #define PPC_BREAKPOINT_MODE_RANGE_EXCLUSIVE     0x00000002
 256 #define PPC_BREAKPOINT_MODE_MASK                0x00000003
 257
 258 /*
 259  * Condition Mode
 260  */
 261 #define PPC_BREAKPOINT_CONDITION_MODE   0x00000003
 262 #define PPC_BREAKPOINT_CONDITION_NONE   0x00000000
 263 #define PPC_BREAKPOINT_CONDITION_AND    0x00000001
 264 #define PPC_BREAKPOINT_CONDITION_EXACT  PPC_BREAKPOINT_CONDITION_AND
 265 #define PPC_BREAKPOINT_CONDITION_OR     0x00000002
 266 #define PPC_BREAKPOINT_CONDITION_AND_OR 0x00000003
 267 #define PPC_BREAKPOINT_CONDITION_BE_ALL 0x00ff0000
 268 #define PPC_BREAKPOINT_CONDITION_BE_SHIFT       16
 269 #define PPC_BREAKPOINT_CONDITION_BE(n)  \
 270         (1<<((n)+PPC_BREAKPOINT_CONDITION_BE_SHIFT))
 271
 272 #endif /* _UAPI_ASM_POWERPC_PTRACE_H */