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) */ 457