arch/sparc/include/asm/ptrace.h

   1 #ifndef __SPARC_PTRACE_H
   2 #define __SPARC_PTRACE_H
   3
   4 #if defined(__sparc__) && defined(__arch64__)
   5 /* 64 bit sparc */
   6 #include <asm/pstate.h>
   7
   8 /* This struct defines the way the registers are stored on the
   9  * stack during a system call and basically all traps.
  10  */
  11
  12 /* This magic value must have the low 9 bits clear,
  13  * as that is where we encode the %tt value, see below.
  14  */
  15 #define PT_REGS_MAGIC 0x57ac6c00
  16
  17 #ifndef __ASSEMBLY__
  18
  19 #include <linux/types.h>
  20
  21 struct pt_regs {
  22         unsigned long u_regs[16]; /* globals and ins */
  23         unsigned long tstate;
  24         unsigned long tpc;
  25         unsigned long tnpc;
  26         unsigned int y;
  27
  28         /* We encode a magic number, PT_REGS_MAGIC, along
  29          * with the %tt (trap type) register value at trap
  30          * entry time.  The magic number allows us to identify
  31          * accurately a trap stack frame in the stack
  32          * unwinder, and the %tt value allows us to test
  33          * things like "in a system call" etc. for an arbitray
  34          * process.
  35          *
  36          * The PT_REGS_MAGIC is chosen such that it can be
  37          * loaded completely using just a sethi instruction.
  38          */
  39         unsigned int magic;
  40 };
  41
  42 struct pt_regs32 {
  43         unsigned int psr;
  44         unsigned int pc;
  45         unsigned int npc;
  46         unsigned int y;
  47         unsigned int u_regs[16]; /* globals and ins */
  48 };
  49
  50 /* A V9 register window */
  51 struct reg_window {
  52         unsigned long locals[8];
  53         unsigned long ins[8];
  54 };
  55
  56 /* A 32-bit register window. */
  57 struct reg_window32 {
  58         unsigned int locals[8];
  59         unsigned int ins[8];
  60 };
  61
  62 /* A V9 Sparc stack frame */
  63 struct sparc_stackf {
  64         unsigned long locals[8];
  65         unsigned long ins[6];
  66         struct sparc_stackf *fp;
  67         unsigned long callers_pc;
  68         char *structptr;
  69         unsigned long xargs[6];
  70         unsigned long xxargs[1];
  71 };
  72
  73 /* A 32-bit Sparc stack frame */
  74 struct sparc_stackf32 {
  75         unsigned int locals[8];
  76         unsigned int ins[6];
  77         unsigned int fp;
  78         unsigned int callers_pc;
  79         unsigned int structptr;
  80         unsigned int xargs[6];
  81         unsigned int xxargs[1];
  82 };
  83
  84 struct sparc_trapf {
  85         unsigned long locals[8];
  86         unsigned long ins[8];
  87         unsigned long _unused;
  88         struct pt_regs *regs;
  89 };
  90 #endif /* (!__ASSEMBLY__) */
  91 #else
  92 /* 32 bit sparc */
  93
  94 #include <asm/psr.h>
  95
  96 /* This struct defines the way the registers are stored on the
  97  * stack during a system call and basically all traps.
  98  */
  99 #ifndef __ASSEMBLY__
 100
 101 #include <linux/types.h>
 102
 103 struct pt_regs {
 104         unsigned long psr;
 105         unsigned long pc;
 106         unsigned long npc;
 107         unsigned long y;
 108         unsigned long u_regs[16]; /* globals and ins */
 109 };
 110
 111 /* A 32-bit register window. */
 112 struct reg_window32 {
 113         unsigned long locals[8];
 114         unsigned long ins[8];
 115 };
 116
 117 /* A Sparc stack frame */
 118 struct sparc_stackf {
 119         unsigned long locals[8];
 120         unsigned long ins[6];
 121         struct sparc_stackf *fp;
 122         unsigned long callers_pc;
 123         char *structptr;
 124         unsigned long xargs[6];
 125         unsigned long xxargs[1];
 126 };
 127 #endif /* (!__ASSEMBLY__) */
 128
 129 #endif /* (defined(__sparc__) && defined(__arch64__))*/
 130
 131 #ifndef __ASSEMBLY__
 132
 133 #define TRACEREG_SZ     sizeof(struct pt_regs)
 134 #define STACKFRAME_SZ   sizeof(struct sparc_stackf)
 135
 136 #define TRACEREG32_SZ   sizeof(struct pt_regs32)
 137 #define STACKFRAME32_SZ sizeof(struct sparc_stackf32)
 138
 139 #endif /* (!__ASSEMBLY__) */
 140
 141 #define UREG_G0        0
 142 #define UREG_G1        1
 143 #define UREG_G2        2
 144 #define UREG_G3        3
 145 #define UREG_G4        4
 146 #define UREG_G5        5
 147 #define UREG_G6        6
 148 #define UREG_G7        7
 149 #define UREG_I0        8
 150 #define UREG_I1        9
 151 #define UREG_I2        10
 152 #define UREG_I3        11
 153 #define UREG_I4        12
 154 #define UREG_I5        13
 155 #define UREG_I6        14
 156 #define UREG_I7        15
 157 #define UREG_FP        UREG_I6
 158 #define UREG_RETPC     UREG_I7
 159
 160 #if defined(__sparc__) && defined(__arch64__)
 161 /* 64 bit sparc */
 162
 163 #ifndef __ASSEMBLY__
 164
 165 #ifdef __KERNEL__
 166
 167 #include <linux/threads.h>
 168 #include <asm/switch_to.h>
 169
 170 static inline int pt_regs_trap_type(struct pt_regs *regs)
 171 {
 172         return regs->magic & 0x1ff;
 173 }
 174
 175 static inline bool pt_regs_is_syscall(struct pt_regs *regs)
 176 {
 177         return (regs->tstate & TSTATE_SYSCALL);
 178 }
 179
 180 static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
 181 {
 182         return (regs->tstate &= ~TSTATE_SYSCALL);
 183 }
 184
 185 #define arch_ptrace_stop_needed(exit_code, info) \
 186 ({      flush_user_windows(); \
 187         get_thread_wsaved() != 0; \
 188 })
 189
 190 #define arch_ptrace_stop(exit_code, info) \
 191         synchronize_user_stack()
 192
 193 struct global_reg_snapshot {
 194         unsigned long           tstate;
 195         unsigned long           tpc;
 196         unsigned long           tnpc;
 197         unsigned long           o7;
 198         unsigned long           i7;
 199         unsigned long           rpc;
 200         struct thread_info      *thread;
 201         unsigned long           pad1;
 202 };
 203 extern struct global_reg_snapshot global_reg_snapshot[NR_CPUS];
 204
 205 #define force_successful_syscall_return()           \
 206 do {    current_thread_info()->syscall_noerror = 1; \
 207 } while (0)
 208 #define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
 209 #define instruction_pointer(regs) ((regs)->tpc)
 210 #define instruction_pointer_set(regs, val) ((regs)->tpc = (val))
 211 #define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
 212 static inline int is_syscall_success(struct pt_regs *regs)
 213 {
 214         return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
 215 }
 216
 217 static inline long regs_return_value(struct pt_regs *regs)
 218 {
 219         return regs->u_regs[UREG_I0];
 220 }
 221 #ifdef CONFIG_SMP
 222 extern unsigned long profile_pc(struct pt_regs *);
 223 #else
 224 #define profile_pc(regs) instruction_pointer(regs)
 225 #endif
 226 #endif /* (__KERNEL__) */
 227
 228 #else /* __ASSEMBLY__ */
 229 /* For assembly code. */
 230 #define TRACEREG_SZ             0xa0
 231 #define STACKFRAME_SZ           0xc0
 232
 233 #define TRACEREG32_SZ           0x50
 234 #define STACKFRAME32_SZ         0x60
 235 #endif /* __ASSEMBLY__ */
 236
 237 #else /* (defined(__sparc__) && defined(__arch64__)) */
 238
 239 /* 32 bit sparc */
 240
 241 #ifndef __ASSEMBLY__
 242
 243 #ifdef __KERNEL__
 244 #include <asm/switch_to.h>
 245
 246 static inline bool pt_regs_is_syscall(struct pt_regs *regs)
 247 {
 248         return (regs->psr & PSR_SYSCALL);
 249 }
 250
 251 static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
 252 {
 253         return (regs->psr &= ~PSR_SYSCALL);
 254 }
 255
 256 #define arch_ptrace_stop_needed(exit_code, info) \
 257 ({      flush_user_windows(); \
 258         current_thread_info()->w_saved != 0;    \
 259 })
 260
 261 #define arch_ptrace_stop(exit_code, info) \
 262         synchronize_user_stack()
 263
 264 #define user_mode(regs) (!((regs)->psr & PSR_PS))
 265 #define instruction_pointer(regs) ((regs)->pc)
 266 #define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
 267 unsigned long profile_pc(struct pt_regs *);
 268 #endif /* (__KERNEL__) */
 269
 270 #else /* (!__ASSEMBLY__) */
 271 /* For assembly code. */
 272 #define TRACEREG_SZ       0x50
 273 #define STACKFRAME_SZ     0x60
 274 #endif /* (!__ASSEMBLY__) */
 275
 276 #endif /* (defined(__sparc__) && defined(__arch64__)) */
 277
 278 #ifdef __KERNEL__
 279 #define STACK_BIAS              2047
 280 #endif
 281
 282 /* These are for pt_regs. */
 283 #define PT_V9_G0     0x00
 284 #define PT_V9_G1     0x08
 285 #define PT_V9_G2     0x10
 286 #define PT_V9_G3     0x18
 287 #define PT_V9_G4     0x20
 288 #define PT_V9_G5     0x28
 289 #define PT_V9_G6     0x30
 290 #define PT_V9_G7     0x38
 291 #define PT_V9_I0     0x40
 292 #define PT_V9_I1     0x48
 293 #define PT_V9_I2     0x50
 294 #define PT_V9_I3     0x58
 295 #define PT_V9_I4     0x60
 296 #define PT_V9_I5     0x68
 297 #define PT_V9_I6     0x70
 298 #define PT_V9_FP     PT_V9_I6
 299 #define PT_V9_I7     0x78
 300 #define PT_V9_TSTATE 0x80
 301 #define PT_V9_TPC    0x88
 302 #define PT_V9_TNPC   0x90
 303 #define PT_V9_Y      0x98
 304 #define PT_V9_MAGIC  0x9c
 305 #define PT_TSTATE       PT_V9_TSTATE
 306 #define PT_TPC          PT_V9_TPC
 307 #define PT_TNPC         PT_V9_TNPC
 308
 309 /* These for pt_regs32. */
 310 #define PT_PSR    0x0
 311 #define PT_PC     0x4
 312 #define PT_NPC    0x8
 313 #define PT_Y      0xc
 314 #define PT_G0     0x10
 315 #define PT_WIM    PT_G0
 316 #define PT_G1     0x14
 317 #define PT_G2     0x18
 318 #define PT_G3     0x1c
 319 #define PT_G4     0x20
 320 #define PT_G5     0x24
 321 #define PT_G6     0x28
 322 #define PT_G7     0x2c
 323 #define PT_I0     0x30
 324 #define PT_I1     0x34
 325 #define PT_I2     0x38
 326 #define PT_I3     0x3c
 327 #define PT_I4     0x40
 328 #define PT_I5     0x44
 329 #define PT_I6     0x48
 330 #define PT_FP     PT_I6
 331 #define PT_I7     0x4c
 332
 333 /* Reg_window offsets */
 334 #define RW_V9_L0     0x00
 335 #define RW_V9_L1     0x08
 336 #define RW_V9_L2     0x10
 337 #define RW_V9_L3     0x18
 338 #define RW_V9_L4     0x20
 339 #define RW_V9_L5     0x28
 340 #define RW_V9_L6     0x30
 341 #define RW_V9_L7     0x38
 342 #define RW_V9_I0     0x40
 343 #define RW_V9_I1     0x48
 344 #define RW_V9_I2     0x50
 345 #define RW_V9_I3     0x58
 346 #define RW_V9_I4     0x60
 347 #define RW_V9_I5     0x68
 348 #define RW_V9_I6     0x70
 349 #define RW_V9_I7     0x78
 350
 351 #define RW_L0     0x00
 352 #define RW_L1     0x04
 353 #define RW_L2     0x08
 354 #define RW_L3     0x0c
 355 #define RW_L4     0x10
 356 #define RW_L5     0x14
 357 #define RW_L6     0x18
 358 #define RW_L7     0x1c
 359 #define RW_I0     0x20
 360 #define RW_I1     0x24
 361 #define RW_I2     0x28
 362 #define RW_I3     0x2c
 363 #define RW_I4     0x30
 364 #define RW_I5     0x34
 365 #define RW_I6     0x38
 366 #define RW_I7     0x3c
 367
 368 /* Stack_frame offsets */
 369 #define SF_V9_L0     0x00
 370 #define SF_V9_L1     0x08
 371 #define SF_V9_L2     0x10
 372 #define SF_V9_L3     0x18
 373 #define SF_V9_L4     0x20
 374 #define SF_V9_L5     0x28
 375 #define SF_V9_L6     0x30
 376 #define SF_V9_L7     0x38
 377 #define SF_V9_I0     0x40
 378 #define SF_V9_I1     0x48
 379 #define SF_V9_I2     0x50
 380 #define SF_V9_I3     0x58
 381 #define SF_V9_I4     0x60
 382 #define SF_V9_I5     0x68
 383 #define SF_V9_FP     0x70
 384 #define SF_V9_PC     0x78
 385 #define SF_V9_RETP   0x80
 386 #define SF_V9_XARG0  0x88
 387 #define SF_V9_XARG1  0x90
 388 #define SF_V9_XARG2  0x98
 389 #define SF_V9_XARG3  0xa0
 390 #define SF_V9_XARG4  0xa8
 391 #define SF_V9_XARG5  0xb0
 392 #define SF_V9_XXARG  0xb8
 393
 394 #define SF_L0     0x00
 395 #define SF_L1     0x04
 396 #define SF_L2     0x08
 397 #define SF_L3     0x0c
 398 #define SF_L4     0x10
 399 #define SF_L5     0x14
 400 #define SF_L6     0x18
 401 #define SF_L7     0x1c
 402 #define SF_I0     0x20
 403 #define SF_I1     0x24
 404 #define SF_I2     0x28
 405 #define SF_I3     0x2c
 406 #define SF_I4     0x30
 407 #define SF_I5     0x34
 408 #define SF_FP     0x38
 409 #define SF_PC     0x3c
 410 #define SF_RETP   0x40
 411 #define SF_XARG0  0x44
 412 #define SF_XARG1  0x48
 413 #define SF_XARG2  0x4c
 414 #define SF_XARG3  0x50
 415 #define SF_XARG4  0x54
 416 #define SF_XARG5  0x58
 417 #define SF_XXARG  0x5c
 418
 419 #ifdef __KERNEL__
 420
 421 /* global_reg_snapshot offsets */
 422 #define GR_SNAP_TSTATE  0x00
 423 #define GR_SNAP_TPC     0x08
 424 #define GR_SNAP_TNPC    0x10
 425 #define GR_SNAP_O7      0x18
 426 #define GR_SNAP_I7      0x20
 427 #define GR_SNAP_RPC     0x28
 428 #define GR_SNAP_THREAD  0x30
 429 #define GR_SNAP_PAD1    0x38
 430
 431 #endif  /*  __KERNEL__  */
 432
 433 /* Stuff for the ptrace system call */
 434 #define PTRACE_SPARC_DETACH       11
 435 #define PTRACE_GETREGS            12
 436 #define PTRACE_SETREGS            13
 437 #define PTRACE_GETFPREGS          14
 438 #define PTRACE_SETFPREGS          15
 439 #define PTRACE_READDATA           16
 440 #define PTRACE_WRITEDATA          17
 441 #define PTRACE_READTEXT           18
 442 #define PTRACE_WRITETEXT          19
 443 #define PTRACE_GETFPAREGS         20
 444 #define PTRACE_SETFPAREGS         21
 445
 446 /* There are for debugging 64-bit processes, either from a 32 or 64 bit
 447  * parent.  Thus their complements are for debugging 32-bit processes only.
 448  */
 449
 450 #define PTRACE_GETREGS64          22
 451 #define PTRACE_SETREGS64          23
 452 /* PTRACE_SYSCALL is 24 */
 453 #define PTRACE_GETFPREGS64        25
 454 #define PTRACE_SETFPREGS64        26
 455
 456 #endif /* !(__SPARC_PTRACE_H) */