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