include/asm-sparc64/ptrace.h

   1 #ifndef _SPARC64_PTRACE_H
   2 #define _SPARC64_PTRACE_H
   3
   4 #include <asm/pstate.h>
   5
   6 /* This struct defines the way the registers are stored on the
   7  * stack during a system call and basically all traps.
   8  */
   9
  10 /* This magic value must have the low 9 bits clear,
  11  * as that is where we encode the %tt value, see below.
  12  */
  13 #define PT_REGS_MAGIC 0x57ac6c00
  14
  15 #ifndef __ASSEMBLY__
  16
  17 #include <linux/types.h>
  18
  19 struct pt_regs {
  20         unsigned long u_regs[16]; /* globals and ins */
  21         unsigned long tstate;
  22         unsigned long tpc;
  23         unsigned long tnpc;
  24         unsigned int y;
  25
  26         /* We encode a magic number, PT_REGS_MAGIC, along
  27          * with the %tt (trap type) register value at trap
  28          * entry time.  The magic number allows us to identify
  29          * accurately a trap stack frame in the stack
  30          * unwinder, and the %tt value allows us to test
  31          * things like "in a system call" etc. for an arbitray
  32          * process.
  33          *
  34          * The PT_REGS_MAGIC is choosen such that it can be
  35          * loaded completely using just a sethi instruction.
  36          */
  37         unsigned int magic;
  38 };
  39
  40 static inline int pt_regs_trap_type(struct pt_regs *regs)
  41 {
  42         return regs->magic & 0x1ff;
  43 }
  44
  45 static inline bool pt_regs_is_syscall(struct pt_regs *regs)
  46 {
  47         return (regs->tstate & TSTATE_SYSCALL);
  48 }
  49
  50 static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
  51 {
  52         return (regs->tstate &= ~TSTATE_SYSCALL);
  53 }
  54
  55 struct pt_regs32 {
  56         unsigned int psr;
  57         unsigned int pc;
  58         unsigned int npc;
  59         unsigned int y;
  60         unsigned int u_regs[16]; /* globals and ins */
  61 };
  62
  63 #define UREG_G0        0
  64 #define UREG_G1        1
  65 #define UREG_G2        2
  66 #define UREG_G3        3
  67 #define UREG_G4        4
  68 #define UREG_G5        5
  69 #define UREG_G6        6
  70 #define UREG_G7        7
  71 #define UREG_I0        8
  72 #define UREG_I1        9
  73 #define UREG_I2        10
  74 #define UREG_I3        11
  75 #define UREG_I4        12
  76 #define UREG_I5        13
  77 #define UREG_I6        14
  78 #define UREG_I7        15
  79 #define UREG_FP        UREG_I6
  80 #define UREG_RETPC     UREG_I7
  81
  82 /* A V9 register window */
  83 struct reg_window {
  84         unsigned long locals[8];
  85         unsigned long ins[8];
  86 };
  87
  88 /* A 32-bit register window. */
  89 struct reg_window32 {
  90         unsigned int locals[8];
  91         unsigned int ins[8];
  92 };
  93
  94 /* A V9 Sparc stack frame */
  95 struct sparc_stackf {
  96         unsigned long locals[8];
  97         unsigned long ins[6];
  98         struct sparc_stackf *fp;
  99         unsigned long callers_pc;
 100         char *structptr;
 101         unsigned long xargs[6];
 102         unsigned long xxargs[1];
 103 };
 104
 105 /* A 32-bit Sparc stack frame */
 106 struct sparc_stackf32 {
 107         unsigned int locals[8];
 108         unsigned int ins[6];
 109         unsigned int fp;
 110         unsigned int callers_pc;
 111         unsigned int structptr;
 112         unsigned int xargs[6];
 113         unsigned int xxargs[1];
 114 };
 115
 116 struct sparc_trapf {
 117         unsigned long locals[8];
 118         unsigned long ins[8];
 119         unsigned long _unused;
 120         struct pt_regs *regs;
 121 };
 122
 123 #define TRACEREG_SZ     sizeof(struct pt_regs)
 124 #define STACKFRAME_SZ   sizeof(struct sparc_stackf)
 125
 126 #define TRACEREG32_SZ   sizeof(struct pt_regs32)
 127 #define STACKFRAME32_SZ sizeof(struct sparc_stackf32)
 128
 129 #ifdef __KERNEL__
 130
 131 #define __ARCH_WANT_COMPAT_SYS_PTRACE
 132
 133 #define force_successful_syscall_return()           \
 134 do {    current_thread_info()->syscall_noerror = 1; \
 135 } while (0)
 136 #define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
 137 #define instruction_pointer(regs) ((regs)->tpc)
 138 #define regs_return_value(regs) ((regs)->u_regs[UREG_I0])
 139 #ifdef CONFIG_SMP
 140 extern unsigned long profile_pc(struct pt_regs *);
 141 #else
 142 #define profile_pc(regs) instruction_pointer(regs)
 143 #endif
 144 extern void show_regs(struct pt_regs *);
 145 extern void __show_regs(struct pt_regs *);
 146 #endif
 147
 148 #else /* __ASSEMBLY__ */
 149 /* For assembly code. */
 150 #define TRACEREG_SZ             0xa0
 151 #define STACKFRAME_SZ           0xc0
 152
 153 #define TRACEREG32_SZ           0x50
 154 #define STACKFRAME32_SZ         0x60
 155 #endif
 156
 157 #ifdef __KERNEL__
 158 #define STACK_BIAS              2047
 159 #endif
 160
 161 /* These are for pt_regs. */
 162 #define PT_V9_G0     0x00
 163 #define PT_V9_G1     0x08
 164 #define PT_V9_G2     0x10
 165 #define PT_V9_G3     0x18
 166 #define PT_V9_G4     0x20
 167 #define PT_V9_G5     0x28
 168 #define PT_V9_G6     0x30
 169 #define PT_V9_G7     0x38
 170 #define PT_V9_I0     0x40
 171 #define PT_V9_I1     0x48
 172 #define PT_V9_I2     0x50
 173 #define PT_V9_I3     0x58
 174 #define PT_V9_I4     0x60
 175 #define PT_V9_I5     0x68
 176 #define PT_V9_I6     0x70
 177 #define PT_V9_FP     PT_V9_I6
 178 #define PT_V9_I7     0x78
 179 #define PT_V9_TSTATE 0x80
 180 #define PT_V9_TPC    0x88
 181 #define PT_V9_TNPC   0x90
 182 #define PT_V9_Y      0x98
 183 #define PT_V9_MAGIC  0x9c
 184 #define PT_TSTATE       PT_V9_TSTATE
 185 #define PT_TPC          PT_V9_TPC
 186 #define PT_TNPC         PT_V9_TNPC
 187
 188 /* These for pt_regs32. */
 189 #define PT_PSR    0x0
 190 #define PT_PC     0x4
 191 #define PT_NPC    0x8
 192 #define PT_Y      0xc
 193 #define PT_G0     0x10
 194 #define PT_WIM    PT_G0
 195 #define PT_G1     0x14
 196 #define PT_G2     0x18
 197 #define PT_G3     0x1c
 198 #define PT_G4     0x20
 199 #define PT_G5     0x24
 200 #define PT_G6     0x28
 201 #define PT_G7     0x2c
 202 #define PT_I0     0x30
 203 #define PT_I1     0x34
 204 #define PT_I2     0x38
 205 #define PT_I3     0x3c
 206 #define PT_I4     0x40
 207 #define PT_I5     0x44
 208 #define PT_I6     0x48
 209 #define PT_FP     PT_I6
 210 #define PT_I7     0x4c
 211
 212 /* Reg_window offsets */
 213 #define RW_V9_L0     0x00
 214 #define RW_V9_L1     0x08
 215 #define RW_V9_L2     0x10
 216 #define RW_V9_L3     0x18
 217 #define RW_V9_L4     0x20
 218 #define RW_V9_L5     0x28
 219 #define RW_V9_L6     0x30
 220 #define RW_V9_L7     0x38
 221 #define RW_V9_I0     0x40
 222 #define RW_V9_I1     0x48
 223 #define RW_V9_I2     0x50
 224 #define RW_V9_I3     0x58
 225 #define RW_V9_I4     0x60
 226 #define RW_V9_I5     0x68
 227 #define RW_V9_I6     0x70
 228 #define RW_V9_I7     0x78
 229
 230 #define RW_L0     0x00
 231 #define RW_L1     0x04
 232 #define RW_L2     0x08
 233 #define RW_L3     0x0c
 234 #define RW_L4     0x10
 235 #define RW_L5     0x14
 236 #define RW_L6     0x18
 237 #define RW_L7     0x1c
 238 #define RW_I0     0x20
 239 #define RW_I1     0x24
 240 #define RW_I2     0x28
 241 #define RW_I3     0x2c
 242 #define RW_I4     0x30
 243 #define RW_I5     0x34
 244 #define RW_I6     0x38
 245 #define RW_I7     0x3c
 246
 247 /* Stack_frame offsets */
 248 #define SF_V9_L0     0x00
 249 #define SF_V9_L1     0x08
 250 #define SF_V9_L2     0x10
 251 #define SF_V9_L3     0x18
 252 #define SF_V9_L4     0x20
 253 #define SF_V9_L5     0x28
 254 #define SF_V9_L6     0x30
 255 #define SF_V9_L7     0x38
 256 #define SF_V9_I0     0x40
 257 #define SF_V9_I1     0x48
 258 #define SF_V9_I2     0x50
 259 #define SF_V9_I3     0x58
 260 #define SF_V9_I4     0x60
 261 #define SF_V9_I5     0x68
 262 #define SF_V9_FP     0x70
 263 #define SF_V9_PC     0x78
 264 #define SF_V9_RETP   0x80
 265 #define SF_V9_XARG0  0x88
 266 #define SF_V9_XARG1  0x90
 267 #define SF_V9_XARG2  0x98
 268 #define SF_V9_XARG3  0xa0
 269 #define SF_V9_XARG4  0xa8
 270 #define SF_V9_XARG5  0xb0
 271 #define SF_V9_XXARG  0xb8
 272
 273 #define SF_L0     0x00
 274 #define SF_L1     0x04
 275 #define SF_L2     0x08
 276 #define SF_L3     0x0c
 277 #define SF_L4     0x10
 278 #define SF_L5     0x14
 279 #define SF_L6     0x18
 280 #define SF_L7     0x1c
 281 #define SF_I0     0x20
 282 #define SF_I1     0x24
 283 #define SF_I2     0x28
 284 #define SF_I3     0x2c
 285 #define SF_I4     0x30
 286 #define SF_I5     0x34
 287 #define SF_FP     0x38
 288 #define SF_PC     0x3c
 289 #define SF_RETP   0x40
 290 #define SF_XARG0  0x44
 291 #define SF_XARG1  0x48
 292 #define SF_XARG2  0x4c
 293 #define SF_XARG3  0x50
 294 #define SF_XARG4  0x54
 295 #define SF_XARG5  0x58
 296 #define SF_XXARG  0x5c
 297
 298 /* Stuff for the ptrace system call */
 299 #define PTRACE_SPARC_DETACH       11
 300 #define PTRACE_GETREGS            12
 301 #define PTRACE_SETREGS            13
 302 #define PTRACE_GETFPREGS          14
 303 #define PTRACE_SETFPREGS          15
 304 #define PTRACE_READDATA           16
 305 #define PTRACE_WRITEDATA          17
 306 #define PTRACE_READTEXT           18
 307 #define PTRACE_WRITETEXT          19
 308 #define PTRACE_GETFPAREGS         20
 309 #define PTRACE_SETFPAREGS         21
 310
 311 /* There are for debugging 64-bit processes, either from a 32 or 64 bit
 312  * parent.  Thus their complements are for debugging 32-bit processes only.
 313  */
 314
 315 #define PTRACE_GETREGS64          22
 316 #define PTRACE_SETREGS64          23
 317 /* PTRACE_SYSCALL is 24 */
 318 #define PTRACE_GETFPREGS64        25
 319 #define PTRACE_SETFPREGS64        26
 320
 321 #endif /* !(_SPARC64_PTRACE_H) */