arch/sparc/include/asm/ptrace_64.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 struct pt_regs32 {
  41         unsigned int psr;
  42         unsigned int pc;
  43         unsigned int npc;
  44         unsigned int y;
  45         unsigned int u_regs[16]; /* globals and ins */
  46 };
  47
  48 #define UREG_G0        0
  49 #define UREG_G1        1
  50 #define UREG_G2        2
  51 #define UREG_G3        3
  52 #define UREG_G4        4
  53 #define UREG_G5        5
  54 #define UREG_G6        6
  55 #define UREG_G7        7
  56 #define UREG_I0        8
  57 #define UREG_I1        9
  58 #define UREG_I2        10
  59 #define UREG_I3        11
  60 #define UREG_I4        12
  61 #define UREG_I5        13
  62 #define UREG_I6        14
  63 #define UREG_I7        15
  64 #define UREG_FP        UREG_I6
  65 #define UREG_RETPC     UREG_I7
  66
  67 /* A V9 register window */
  68 struct reg_window {
  69         unsigned long locals[8];
  70         unsigned long ins[8];
  71 };
  72
  73 /* A 32-bit register window. */
  74 struct reg_window32 {
  75         unsigned int locals[8];
  76         unsigned int ins[8];
  77 };
  78
  79 /* A V9 Sparc stack frame */
  80 struct sparc_stackf {
  81         unsigned long locals[8];
  82         unsigned long ins[6];
  83         struct sparc_stackf *fp;
  84         unsigned long callers_pc;
  85         char *structptr;
  86         unsigned long xargs[6];
  87         unsigned long xxargs[1];
  88 };
  89
  90 /* A 32-bit Sparc stack frame */
  91 struct sparc_stackf32 {
  92         unsigned int locals[8];
  93         unsigned int ins[6];
  94         unsigned int fp;
  95         unsigned int callers_pc;
  96         unsigned int structptr;
  97         unsigned int xargs[6];
  98         unsigned int xxargs[1];
  99 };
 100
 101 struct sparc_trapf {
 102         unsigned long locals[8];
 103         unsigned long ins[8];
 104         unsigned long _unused;
 105         struct pt_regs *regs;
 106 };
 107
 108 #define TRACEREG_SZ     sizeof(struct pt_regs)
 109 #define STACKFRAME_SZ   sizeof(struct sparc_stackf)
 110
 111 #define TRACEREG32_SZ   sizeof(struct pt_regs32)
 112 #define STACKFRAME32_SZ sizeof(struct sparc_stackf32)
 113
 114 #ifdef __KERNEL__
 115
 116 #include <asm/system.h>
 117
 118 static inline int pt_regs_trap_type(struct pt_regs *regs)
 119 {
 120         return regs->magic & 0x1ff;
 121 }
 122
 123 static inline bool pt_regs_is_syscall(struct pt_regs *regs)
 124 {
 125         return (regs->tstate & TSTATE_SYSCALL);
 126 }
 127
 128 static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
 129 {
 130         return (regs->tstate &= ~TSTATE_SYSCALL);
 131 }
 132
 133 #define arch_ptrace_stop_needed(exit_code, info) \
 134 ({      flush_user_windows(); \
 135         get_thread_wsaved() != 0; \
 136 })
 137
 138 #define arch_ptrace_stop(exit_code, info) \
 139         synchronize_user_stack()
 140
 141 struct global_reg_snapshot {
 142         unsigned long           tstate;
 143         unsigned long           tpc;
 144         unsigned long           tnpc;
 145         unsigned long           o7;
 146         unsigned long           i7;
 147         unsigned long           rpc;
 148         struct thread_info      *thread;
 149         unsigned long           pad1;
 150 };
 151
 152 #define __ARCH_WANT_COMPAT_SYS_PTRACE
 153
 154 #define force_successful_syscall_return()           \
 155 do {    current_thread_info()->syscall_noerror = 1; \
 156 } while (0)
 157 #define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
 158 #define instruction_pointer(regs) ((regs)->tpc)
 159 #define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
 160 #define regs_return_value(regs) ((regs)->u_regs[UREG_I0])
 161 #ifdef CONFIG_SMP
 162 extern unsigned long profile_pc(struct pt_regs *);
 163 #else
 164 #define profile_pc(regs) instruction_pointer(regs)
 165 #endif
 166 extern void show_regs(struct pt_regs *);
 167 #endif
 168
 169 #else /* __ASSEMBLY__ */
 170 /* For assembly code. */
 171 #define TRACEREG_SZ             0xa0
 172 #define STACKFRAME_SZ           0xc0
 173
 174 #define TRACEREG32_SZ           0x50
 175 #define STACKFRAME32_SZ         0x60
 176 #endif
 177
 178 #ifdef __KERNEL__
 179 #define STACK_BIAS              2047
 180 #endif
 181
 182 /* These are for pt_regs. */
 183 #define PT_V9_G0     0x00
 184 #define PT_V9_G1     0x08
 185 #define PT_V9_G2     0x10
 186 #define PT_V9_G3     0x18
 187 #define PT_V9_G4     0x20
 188 #define PT_V9_G5     0x28
 189 #define PT_V9_G6     0x30
 190 #define PT_V9_G7     0x38
 191 #define PT_V9_I0     0x40
 192 #define PT_V9_I1     0x48
 193 #define PT_V9_I2     0x50
 194 #define PT_V9_I3     0x58
 195 #define PT_V9_I4     0x60
 196 #define PT_V9_I5     0x68
 197 #define PT_V9_I6     0x70
 198 #define PT_V9_FP     PT_V9_I6
 199 #define PT_V9_I7     0x78
 200 #define PT_V9_TSTATE 0x80
 201 #define PT_V9_TPC    0x88
 202 #define PT_V9_TNPC   0x90
 203 #define PT_V9_Y      0x98
 204 #define PT_V9_MAGIC  0x9c
 205 #define PT_TSTATE       PT_V9_TSTATE
 206 #define PT_TPC          PT_V9_TPC
 207 #define PT_TNPC         PT_V9_TNPC
 208
 209 /* These for pt_regs32. */
 210 #define PT_PSR    0x0
 211 #define PT_PC     0x4
 212 #define PT_NPC    0x8
 213 #define PT_Y      0xc
 214 #define PT_G0     0x10
 215 #define PT_WIM    PT_G0
 216 #define PT_G1     0x14
 217 #define PT_G2     0x18
 218 #define PT_G3     0x1c
 219 #define PT_G4     0x20
 220 #define PT_G5     0x24
 221 #define PT_G6     0x28
 222 #define PT_G7     0x2c
 223 #define PT_I0     0x30
 224 #define PT_I1     0x34
 225 #define PT_I2     0x38
 226 #define PT_I3     0x3c
 227 #define PT_I4     0x40
 228 #define PT_I5     0x44
 229 #define PT_I6     0x48
 230 #define PT_FP     PT_I6
 231 #define PT_I7     0x4c
 232
 233 /* Reg_window offsets */
 234 #define RW_V9_L0     0x00
 235 #define RW_V9_L1     0x08
 236 #define RW_V9_L2     0x10
 237 #define RW_V9_L3     0x18
 238 #define RW_V9_L4     0x20
 239 #define RW_V9_L5     0x28
 240 #define RW_V9_L6     0x30
 241 #define RW_V9_L7     0x38
 242 #define RW_V9_I0     0x40
 243 #define RW_V9_I1     0x48
 244 #define RW_V9_I2     0x50
 245 #define RW_V9_I3     0x58
 246 #define RW_V9_I4     0x60
 247 #define RW_V9_I5     0x68
 248 #define RW_V9_I6     0x70
 249 #define RW_V9_I7     0x78
 250
 251 #define RW_L0     0x00
 252 #define RW_L1     0x04
 253 #define RW_L2     0x08
 254 #define RW_L3     0x0c
 255 #define RW_L4     0x10
 256 #define RW_L5     0x14
 257 #define RW_L6     0x18
 258 #define RW_L7     0x1c
 259 #define RW_I0     0x20
 260 #define RW_I1     0x24
 261 #define RW_I2     0x28
 262 #define RW_I3     0x2c
 263 #define RW_I4     0x30
 264 #define RW_I5     0x34
 265 #define RW_I6     0x38
 266 #define RW_I7     0x3c
 267
 268 /* Stack_frame offsets */
 269 #define SF_V9_L0     0x00
 270 #define SF_V9_L1     0x08
 271 #define SF_V9_L2     0x10
 272 #define SF_V9_L3     0x18
 273 #define SF_V9_L4     0x20
 274 #define SF_V9_L5     0x28
 275 #define SF_V9_L6     0x30
 276 #define SF_V9_L7     0x38
 277 #define SF_V9_I0     0x40
 278 #define SF_V9_I1     0x48
 279 #define SF_V9_I2     0x50
 280 #define SF_V9_I3     0x58
 281 #define SF_V9_I4     0x60
 282 #define SF_V9_I5     0x68
 283 #define SF_V9_FP     0x70
 284 #define SF_V9_PC     0x78
 285 #define SF_V9_RETP   0x80
 286 #define SF_V9_XARG0  0x88
 287 #define SF_V9_XARG1  0x90
 288 #define SF_V9_XARG2  0x98
 289 #define SF_V9_XARG3  0xa0
 290 #define SF_V9_XARG4  0xa8
 291 #define SF_V9_XARG5  0xb0
 292 #define SF_V9_XXARG  0xb8
 293
 294 #define SF_L0     0x00
 295 #define SF_L1     0x04
 296 #define SF_L2     0x08
 297 #define SF_L3     0x0c
 298 #define SF_L4     0x10
 299 #define SF_L5     0x14
 300 #define SF_L6     0x18
 301 #define SF_L7     0x1c
 302 #define SF_I0     0x20
 303 #define SF_I1     0x24
 304 #define SF_I2     0x28
 305 #define SF_I3     0x2c
 306 #define SF_I4     0x30
 307 #define SF_I5     0x34
 308 #define SF_FP     0x38
 309 #define SF_PC     0x3c
 310 #define SF_RETP   0x40
 311 #define SF_XARG0  0x44
 312 #define SF_XARG1  0x48
 313 #define SF_XARG2  0x4c
 314 #define SF_XARG3  0x50
 315 #define SF_XARG4  0x54
 316 #define SF_XARG5  0x58
 317 #define SF_XXARG  0x5c
 318
 319 #ifdef __KERNEL__
 320
 321 /* global_reg_snapshot offsets */
 322 #define GR_SNAP_TSTATE  0x00
 323 #define GR_SNAP_TPC     0x08
 324 #define GR_SNAP_TNPC    0x10
 325 #define GR_SNAP_O7      0x18
 326 #define GR_SNAP_I7      0x20
 327 #define GR_SNAP_RPC     0x28
 328 #define GR_SNAP_THREAD  0x30
 329 #define GR_SNAP_PAD1    0x38
 330
 331 #endif  /*  __KERNEL__  */
 332
 333 /* Stuff for the ptrace system call */
 334 #define PTRACE_SPARC_DETACH       11
 335 #define PTRACE_GETREGS            12
 336 #define PTRACE_SETREGS            13
 337 #define PTRACE_GETFPREGS          14
 338 #define PTRACE_SETFPREGS          15
 339 #define PTRACE_READDATA           16
 340 #define PTRACE_WRITEDATA          17
 341 #define PTRACE_READTEXT           18
 342 #define PTRACE_WRITETEXT          19
 343 #define PTRACE_GETFPAREGS         20
 344 #define PTRACE_SETFPAREGS         21
 345
 346 /* There are for debugging 64-bit processes, either from a 32 or 64 bit
 347  * parent.  Thus their complements are for debugging 32-bit processes only.
 348  */
 349
 350 #define PTRACE_GETREGS64          22
 351 #define PTRACE_SETREGS64          23
 352 /* PTRACE_SYSCALL is 24 */
 353 #define PTRACE_GETFPREGS64        25
 354 #define PTRACE_SETFPREGS64        26
 355
 356 #endif /* !(_SPARC64_PTRACE_H) */