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 struct global_reg_snapshot {
 130         unsigned long           tstate;
 131         unsigned long           tpc;
 132         unsigned long           tnpc;
 133         unsigned long           o7;
 134         unsigned long           i7;
 135         struct thread_info      *thread;
 136         unsigned long           pad1;
 137         unsigned long           pad2;
 138 };
 139
 140 #ifdef __KERNEL__
 141
 142 #define __ARCH_WANT_COMPAT_SYS_PTRACE
 143
 144 #define force_successful_syscall_return()           \
 145 do {    current_thread_info()->syscall_noerror = 1; \
 146 } while (0)
 147 #define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
 148 #define instruction_pointer(regs) ((regs)->tpc)
 149 #define regs_return_value(regs) ((regs)->u_regs[UREG_I0])
 150 #ifdef CONFIG_SMP
 151 extern unsigned long profile_pc(struct pt_regs *);
 152 #else
 153 #define profile_pc(regs) instruction_pointer(regs)
 154 #endif
 155 extern void show_regs(struct pt_regs *);
 156 extern void __show_regs(struct pt_regs *);
 157 #endif
 158
 159 #else /* __ASSEMBLY__ */
 160 /* For assembly code. */
 161 #define TRACEREG_SZ             0xa0
 162 #define STACKFRAME_SZ           0xc0
 163
 164 #define TRACEREG32_SZ           0x50
 165 #define STACKFRAME32_SZ         0x60
 166 #endif
 167
 168 #ifdef __KERNEL__
 169 #define STACK_BIAS              2047
 170 #endif
 171
 172 /* These are for pt_regs. */
 173 #define PT_V9_G0     0x00
 174 #define PT_V9_G1     0x08
 175 #define PT_V9_G2     0x10
 176 #define PT_V9_G3     0x18
 177 #define PT_V9_G4     0x20
 178 #define PT_V9_G5     0x28
 179 #define PT_V9_G6     0x30
 180 #define PT_V9_G7     0x38
 181 #define PT_V9_I0     0x40
 182 #define PT_V9_I1     0x48
 183 #define PT_V9_I2     0x50
 184 #define PT_V9_I3     0x58
 185 #define PT_V9_I4     0x60
 186 #define PT_V9_I5     0x68
 187 #define PT_V9_I6     0x70
 188 #define PT_V9_FP     PT_V9_I6
 189 #define PT_V9_I7     0x78
 190 #define PT_V9_TSTATE 0x80
 191 #define PT_V9_TPC    0x88
 192 #define PT_V9_TNPC   0x90
 193 #define PT_V9_Y      0x98
 194 #define PT_V9_MAGIC  0x9c
 195 #define PT_TSTATE       PT_V9_TSTATE
 196 #define PT_TPC          PT_V9_TPC
 197 #define PT_TNPC         PT_V9_TNPC
 198
 199 /* These for pt_regs32. */
 200 #define PT_PSR    0x0
 201 #define PT_PC     0x4
 202 #define PT_NPC    0x8
 203 #define PT_Y      0xc
 204 #define PT_G0     0x10
 205 #define PT_WIM    PT_G0
 206 #define PT_G1     0x14
 207 #define PT_G2     0x18
 208 #define PT_G3     0x1c
 209 #define PT_G4     0x20
 210 #define PT_G5     0x24
 211 #define PT_G6     0x28
 212 #define PT_G7     0x2c
 213 #define PT_I0     0x30
 214 #define PT_I1     0x34
 215 #define PT_I2     0x38
 216 #define PT_I3     0x3c
 217 #define PT_I4     0x40
 218 #define PT_I5     0x44
 219 #define PT_I6     0x48
 220 #define PT_FP     PT_I6
 221 #define PT_I7     0x4c
 222
 223 /* Reg_window offsets */
 224 #define RW_V9_L0     0x00
 225 #define RW_V9_L1     0x08
 226 #define RW_V9_L2     0x10
 227 #define RW_V9_L3     0x18
 228 #define RW_V9_L4     0x20
 229 #define RW_V9_L5     0x28
 230 #define RW_V9_L6     0x30
 231 #define RW_V9_L7     0x38
 232 #define RW_V9_I0     0x40
 233 #define RW_V9_I1     0x48
 234 #define RW_V9_I2     0x50
 235 #define RW_V9_I3     0x58
 236 #define RW_V9_I4     0x60
 237 #define RW_V9_I5     0x68
 238 #define RW_V9_I6     0x70
 239 #define RW_V9_I7     0x78
 240
 241 #define RW_L0     0x00
 242 #define RW_L1     0x04
 243 #define RW_L2     0x08
 244 #define RW_L3     0x0c
 245 #define RW_L4     0x10
 246 #define RW_L5     0x14
 247 #define RW_L6     0x18
 248 #define RW_L7     0x1c
 249 #define RW_I0     0x20
 250 #define RW_I1     0x24
 251 #define RW_I2     0x28
 252 #define RW_I3     0x2c
 253 #define RW_I4     0x30
 254 #define RW_I5     0x34
 255 #define RW_I6     0x38
 256 #define RW_I7     0x3c
 257
 258 /* Stack_frame offsets */
 259 #define SF_V9_L0     0x00
 260 #define SF_V9_L1     0x08
 261 #define SF_V9_L2     0x10
 262 #define SF_V9_L3     0x18
 263 #define SF_V9_L4     0x20
 264 #define SF_V9_L5     0x28
 265 #define SF_V9_L6     0x30
 266 #define SF_V9_L7     0x38
 267 #define SF_V9_I0     0x40
 268 #define SF_V9_I1     0x48
 269 #define SF_V9_I2     0x50
 270 #define SF_V9_I3     0x58
 271 #define SF_V9_I4     0x60
 272 #define SF_V9_I5     0x68
 273 #define SF_V9_FP     0x70
 274 #define SF_V9_PC     0x78
 275 #define SF_V9_RETP   0x80
 276 #define SF_V9_XARG0  0x88
 277 #define SF_V9_XARG1  0x90
 278 #define SF_V9_XARG2  0x98
 279 #define SF_V9_XARG3  0xa0
 280 #define SF_V9_XARG4  0xa8
 281 #define SF_V9_XARG5  0xb0
 282 #define SF_V9_XXARG  0xb8
 283
 284 #define SF_L0     0x00
 285 #define SF_L1     0x04
 286 #define SF_L2     0x08
 287 #define SF_L3     0x0c
 288 #define SF_L4     0x10
 289 #define SF_L5     0x14
 290 #define SF_L6     0x18
 291 #define SF_L7     0x1c
 292 #define SF_I0     0x20
 293 #define SF_I1     0x24
 294 #define SF_I2     0x28
 295 #define SF_I3     0x2c
 296 #define SF_I4     0x30
 297 #define SF_I5     0x34
 298 #define SF_FP     0x38
 299 #define SF_PC     0x3c
 300 #define SF_RETP   0x40
 301 #define SF_XARG0  0x44
 302 #define SF_XARG1  0x48
 303 #define SF_XARG2  0x4c
 304 #define SF_XARG3  0x50
 305 #define SF_XARG4  0x54
 306 #define SF_XARG5  0x58
 307 #define SF_XXARG  0x5c
 308
 309 /* global_reg_snapshot offsets */
 310 #define GR_SNAP_TSTATE  0x00
 311 #define GR_SNAP_TPC     0x08
 312 #define GR_SNAP_TNPC    0x10
 313 #define GR_SNAP_O7      0x18
 314 #define GR_SNAP_I7      0x20
 315 #define GR_SNAP_THREAD  0x28
 316 #define GR_SNAP_PAD1    0x30
 317 #define GR_SNAP_PAD2    0x38
 318
 319 /* Stuff for the ptrace system call */
 320 #define PTRACE_SPARC_DETACH       11
 321 #define PTRACE_GETREGS            12
 322 #define PTRACE_SETREGS            13
 323 #define PTRACE_GETFPREGS          14
 324 #define PTRACE_SETFPREGS          15
 325 #define PTRACE_READDATA           16
 326 #define PTRACE_WRITEDATA          17
 327 #define PTRACE_READTEXT           18
 328 #define PTRACE_WRITETEXT          19
 329 #define PTRACE_GETFPAREGS         20
 330 #define PTRACE_SETFPAREGS         21
 331
 332 /* There are for debugging 64-bit processes, either from a 32 or 64 bit
 333  * parent.  Thus their complements are for debugging 32-bit processes only.
 334  */
 335
 336 #define PTRACE_GETREGS64          22
 337 #define PTRACE_SETREGS64          23
 338 /* PTRACE_SYSCALL is 24 */
 339 #define PTRACE_GETFPREGS64        25
 340 #define PTRACE_SETFPREGS64        26
 341
 342 #endif /* !(_SPARC64_PTRACE_H) */