1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 /* 3 * S390 version 4 * Copyright IBM Corp. 1999, 2000 5 * Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) 6 */ 7 8 #ifndef _UAPI_S390_PTRACE_H 9 #define _UAPI_S390_PTRACE_H 10 11 /* 12 * Offsets in the user_regs_struct. They are used for the ptrace 13 * system call and in entry.S 14 */ 15 #ifndef __s390x__ 16 17 #define PT_PSWMASK 0x00 18 #define PT_PSWADDR 0x04 19 #define PT_GPR0 0x08 20 #define PT_GPR1 0x0C 21 #define PT_GPR2 0x10 22 #define PT_GPR3 0x14 23 #define PT_GPR4 0x18 24 #define PT_GPR5 0x1C 25 #define PT_GPR6 0x20 26 #define PT_GPR7 0x24 27 #define PT_GPR8 0x28 28 #define PT_GPR9 0x2C 29 #define PT_GPR10 0x30 30 #define PT_GPR11 0x34 31 #define PT_GPR12 0x38 32 #define PT_GPR13 0x3C 33 #define PT_GPR14 0x40 34 #define PT_GPR15 0x44 35 #define PT_ACR0 0x48 36 #define PT_ACR1 0x4C 37 #define PT_ACR2 0x50 38 #define PT_ACR3 0x54 39 #define PT_ACR4 0x58 40 #define PT_ACR5 0x5C 41 #define PT_ACR6 0x60 42 #define PT_ACR7 0x64 43 #define PT_ACR8 0x68 44 #define PT_ACR9 0x6C 45 #define PT_ACR10 0x70 46 #define PT_ACR11 0x74 47 #define PT_ACR12 0x78 48 #define PT_ACR13 0x7C 49 #define PT_ACR14 0x80 50 #define PT_ACR15 0x84 51 #define PT_ORIGGPR2 0x88 52 #define PT_FPC 0x90 53 /* 54 * A nasty fact of life that the ptrace api 55 * only supports passing of longs. 56 */ 57 #define PT_FPR0_HI 0x98 58 #define PT_FPR0_LO 0x9C 59 #define PT_FPR1_HI 0xA0 60 #define PT_FPR1_LO 0xA4 61 #define PT_FPR2_HI 0xA8 62 #define PT_FPR2_LO 0xAC 63 #define PT_FPR3_HI 0xB0 64 #define PT_FPR3_LO 0xB4 65 #define PT_FPR4_HI 0xB8 66 #define PT_FPR4_LO 0xBC 67 #define PT_FPR5_HI 0xC0 68 #define PT_FPR5_LO 0xC4 69 #define PT_FPR6_HI 0xC8 70 #define PT_FPR6_LO 0xCC 71 #define PT_FPR7_HI 0xD0 72 #define PT_FPR7_LO 0xD4 73 #define PT_FPR8_HI 0xD8 74 #define PT_FPR8_LO 0XDC 75 #define PT_FPR9_HI 0xE0 76 #define PT_FPR9_LO 0xE4 77 #define PT_FPR10_HI 0xE8 78 #define PT_FPR10_LO 0xEC 79 #define PT_FPR11_HI 0xF0 80 #define PT_FPR11_LO 0xF4 81 #define PT_FPR12_HI 0xF8 82 #define PT_FPR12_LO 0xFC 83 #define PT_FPR13_HI 0x100 84 #define PT_FPR13_LO 0x104 85 #define PT_FPR14_HI 0x108 86 #define PT_FPR14_LO 0x10C 87 #define PT_FPR15_HI 0x110 88 #define PT_FPR15_LO 0x114 89 #define PT_CR_9 0x118 90 #define PT_CR_10 0x11C 91 #define PT_CR_11 0x120 92 #define PT_IEEE_IP 0x13C 93 #define PT_LASTOFF PT_IEEE_IP 94 #define PT_ENDREGS 0x140-1 95 96 #define GPR_SIZE 4 97 #define CR_SIZE 4 98 99 #define STACK_FRAME_OVERHEAD 96 /* size of minimum stack frame */ 100 101 #else /* __s390x__ */ 102 103 #define PT_PSWMASK 0x00 104 #define PT_PSWADDR 0x08 105 #define PT_GPR0 0x10 106 #define PT_GPR1 0x18 107 #define PT_GPR2 0x20 108 #define PT_GPR3 0x28 109 #define PT_GPR4 0x30 110 #define PT_GPR5 0x38 111 #define PT_GPR6 0x40 112 #define PT_GPR7 0x48 113 #define PT_GPR8 0x50 114 #define PT_GPR9 0x58 115 #define PT_GPR10 0x60 116 #define PT_GPR11 0x68 117 #define PT_GPR12 0x70 118 #define PT_GPR13 0x78 119 #define PT_GPR14 0x80 120 #define PT_GPR15 0x88 121 #define PT_ACR0 0x90 122 #define PT_ACR1 0x94 123 #define PT_ACR2 0x98 124 #define PT_ACR3 0x9C 125 #define PT_ACR4 0xA0 126 #define PT_ACR5 0xA4 127 #define PT_ACR6 0xA8 128 #define PT_ACR7 0xAC 129 #define PT_ACR8 0xB0 130 #define PT_ACR9 0xB4 131 #define PT_ACR10 0xB8 132 #define PT_ACR11 0xBC 133 #define PT_ACR12 0xC0 134 #define PT_ACR13 0xC4 135 #define PT_ACR14 0xC8 136 #define PT_ACR15 0xCC 137 #define PT_ORIGGPR2 0xD0 138 #define PT_FPC 0xD8 139 #define PT_FPR0 0xE0 140 #define PT_FPR1 0xE8 141 #define PT_FPR2 0xF0 142 #define PT_FPR3 0xF8 143 #define PT_FPR4 0x100 144 #define PT_FPR5 0x108 145 #define PT_FPR6 0x110 146 #define PT_FPR7 0x118 147 #define PT_FPR8 0x120 148 #define PT_FPR9 0x128 149 #define PT_FPR10 0x130 150 #define PT_FPR11 0x138 151 #define PT_FPR12 0x140 152 #define PT_FPR13 0x148 153 #define PT_FPR14 0x150 154 #define PT_FPR15 0x158 155 #define PT_CR_9 0x160 156 #define PT_CR_10 0x168 157 #define PT_CR_11 0x170 158 #define PT_IEEE_IP 0x1A8 159 #define PT_LASTOFF PT_IEEE_IP 160 #define PT_ENDREGS 0x1B0-1 161 162 #define GPR_SIZE 8 163 #define CR_SIZE 8 164 165 #define STACK_FRAME_OVERHEAD 160 /* size of minimum stack frame */ 166 167 #endif /* __s390x__ */ 168 169 #define NUM_GPRS 16 170 #define NUM_FPRS 16 171 #define NUM_CRS 16 172 #define NUM_ACRS 16 173 174 #define NUM_CR_WORDS 3 175 176 #define FPR_SIZE 8 177 #define FPC_SIZE 4 178 #define FPC_PAD_SIZE 4 /* gcc insists on aligning the fpregs */ 179 #define ACR_SIZE 4 180 181 182 #define PTRACE_OLDSETOPTIONS 21 183 184 #ifndef __ASSEMBLY__ 185 #include <linux/stddef.h> 186 #include <linux/types.h> 187 188 typedef union { 189 float f; 190 double d; 191 __u64 ui; 192 struct 193 { 194 __u32 hi; 195 __u32 lo; 196 } fp; 197 } freg_t; 198 199 typedef struct { 200 __u32 fpc; 201 __u32 pad; 202 freg_t fprs[NUM_FPRS]; 203 } s390_fp_regs; 204 205 #define FPC_EXCEPTION_MASK 0xF8000000 206 #define FPC_FLAGS_MASK 0x00F80000 207 #define FPC_DXC_MASK 0x0000FF00 208 #define FPC_RM_MASK 0x00000003 209 210 /* this typedef defines how a Program Status Word looks like */ 211 typedef struct { 212 unsigned long mask; 213 unsigned long addr; 214 } __attribute__ ((aligned(8))) psw_t; 215 216 #ifndef __s390x__ 217 218 #define PSW_MASK_PER 0x40000000UL 219 #define PSW_MASK_DAT 0x04000000UL 220 #define PSW_MASK_IO 0x02000000UL 221 #define PSW_MASK_EXT 0x01000000UL 222 #define PSW_MASK_KEY 0x00F00000UL 223 #define PSW_MASK_BASE 0x00080000UL /* always one */ 224 #define PSW_MASK_MCHECK 0x00040000UL 225 #define PSW_MASK_WAIT 0x00020000UL 226 #define PSW_MASK_PSTATE 0x00010000UL 227 #define PSW_MASK_ASC 0x0000C000UL 228 #define PSW_MASK_CC 0x00003000UL 229 #define PSW_MASK_PM 0x00000F00UL 230 #define PSW_MASK_RI 0x00000000UL 231 #define PSW_MASK_EA 0x00000000UL 232 #define PSW_MASK_BA 0x00000000UL 233 234 #define PSW_MASK_USER 0x0000FF00UL 235 236 #define PSW_ADDR_AMODE 0x80000000UL 237 #define PSW_ADDR_INSN 0x7FFFFFFFUL 238 239 #define PSW_DEFAULT_KEY (((unsigned long) PAGE_DEFAULT_ACC) << 20) 240 241 #define PSW_ASC_PRIMARY 0x00000000UL 242 #define PSW_ASC_ACCREG 0x00004000UL 243 #define PSW_ASC_SECONDARY 0x00008000UL 244 #define PSW_ASC_HOME 0x0000C000UL 245 246 #else /* __s390x__ */ 247 248 #define PSW_MASK_PER 0x4000000000000000UL 249 #define PSW_MASK_DAT 0x0400000000000000UL 250 #define PSW_MASK_IO 0x0200000000000000UL 251 #define PSW_MASK_EXT 0x0100000000000000UL 252 #define PSW_MASK_BASE 0x0000000000000000UL 253 #define PSW_MASK_KEY 0x00F0000000000000UL 254 #define PSW_MASK_MCHECK 0x0004000000000000UL 255 #define PSW_MASK_WAIT 0x0002000000000000UL 256 #define PSW_MASK_PSTATE 0x0001000000000000UL 257 #define PSW_MASK_ASC 0x0000C00000000000UL 258 #define PSW_MASK_CC 0x0000300000000000UL 259 #define PSW_MASK_PM 0x00000F0000000000UL 260 #define PSW_MASK_RI 0x0000008000000000UL 261 #define PSW_MASK_EA 0x0000000100000000UL 262 #define PSW_MASK_BA 0x0000000080000000UL 263 264 #define PSW_MASK_USER 0x0000FF0180000000UL 265 266 #define PSW_ADDR_AMODE 0x0000000000000000UL 267 #define PSW_ADDR_INSN 0xFFFFFFFFFFFFFFFFUL 268 269 #define PSW_DEFAULT_KEY (((unsigned long) PAGE_DEFAULT_ACC) << 52) 270 271 #define PSW_ASC_PRIMARY 0x0000000000000000UL 272 #define PSW_ASC_ACCREG 0x0000400000000000UL 273 #define PSW_ASC_SECONDARY 0x0000800000000000UL 274 #define PSW_ASC_HOME 0x0000C00000000000UL 275 276 #endif /* __s390x__ */ 277 278 279 /* 280 * The s390_regs structure is used to define the elf_gregset_t. 281 */ 282 typedef struct { 283 psw_t psw; 284 unsigned long gprs[NUM_GPRS]; 285 unsigned int acrs[NUM_ACRS]; 286 unsigned long orig_gpr2; 287 } s390_regs; 288 289 /* 290 * The user_pt_regs structure exports the beginning of 291 * the in-kernel pt_regs structure to user space. 292 */ 293 typedef struct { 294 unsigned long args[1]; 295 psw_t psw; 296 unsigned long gprs[NUM_GPRS]; 297 } user_pt_regs; 298 299 /* 300 * Now for the user space program event recording (trace) definitions. 301 * The following structures are used only for the ptrace interface, don't 302 * touch or even look at it if you don't want to modify the user-space 303 * ptrace interface. In particular stay away from it for in-kernel PER. 304 */ 305 typedef struct { 306 unsigned long cr[NUM_CR_WORDS]; 307 } per_cr_words; 308 309 #define PER_EM_MASK 0xE8000000UL 310 311 typedef struct { 312 #ifdef __s390x__ 313 unsigned : 32; 314 #endif /* __s390x__ */ 315 unsigned em_branching : 1; 316 unsigned em_instruction_fetch : 1; 317 /* 318 * Switching on storage alteration automatically fixes 319 * the storage alteration event bit in the users std. 320 */ 321 unsigned em_storage_alteration : 1; 322 unsigned em_gpr_alt_unused : 1; 323 unsigned em_store_real_address : 1; 324 unsigned : 3; 325 unsigned branch_addr_ctl : 1; 326 unsigned : 1; 327 unsigned storage_alt_space_ctl : 1; 328 unsigned : 21; 329 unsigned long starting_addr; 330 unsigned long ending_addr; 331 } per_cr_bits; 332 333 typedef struct { 334 unsigned short perc_atmid; 335 unsigned long address; 336 unsigned char access_id; 337 } per_lowcore_words; 338 339 typedef struct { 340 unsigned perc_branching : 1; 341 unsigned perc_instruction_fetch : 1; 342 unsigned perc_storage_alteration : 1; 343 unsigned perc_gpr_alt_unused : 1; 344 unsigned perc_store_real_address : 1; 345 unsigned : 3; 346 unsigned atmid_psw_bit_31 : 1; 347 unsigned atmid_validity_bit : 1; 348 unsigned atmid_psw_bit_32 : 1; 349 unsigned atmid_psw_bit_5 : 1; 350 unsigned atmid_psw_bit_16 : 1; 351 unsigned atmid_psw_bit_17 : 1; 352 unsigned si : 2; 353 unsigned long address; 354 unsigned : 4; 355 unsigned access_id : 4; 356 } per_lowcore_bits; 357 358 typedef struct { 359 union { 360 per_cr_words words; 361 per_cr_bits bits; 362 } control_regs; 363 /* 364 * The single_step and instruction_fetch bits are obsolete, 365 * the kernel always sets them to zero. To enable single 366 * stepping use ptrace(PTRACE_SINGLESTEP) instead. 367 */ 368 unsigned single_step : 1; 369 unsigned instruction_fetch : 1; 370 unsigned : 30; 371 /* 372 * These addresses are copied into cr10 & cr11 if single 373 * stepping is switched off 374 */ 375 unsigned long starting_addr; 376 unsigned long ending_addr; 377 union { 378 per_lowcore_words words; 379 per_lowcore_bits bits; 380 } lowcore; 381 } per_struct; 382 383 typedef struct { 384 unsigned int len; 385 unsigned long kernel_addr; 386 unsigned long process_addr; 387 } ptrace_area; 388 389 /* 390 * S/390 specific non posix ptrace requests. I chose unusual values so 391 * they are unlikely to clash with future ptrace definitions. 392 */ 393 #define PTRACE_PEEKUSR_AREA 0x5000 394 #define PTRACE_POKEUSR_AREA 0x5001 395 #define PTRACE_PEEKTEXT_AREA 0x5002 396 #define PTRACE_PEEKDATA_AREA 0x5003 397 #define PTRACE_POKETEXT_AREA 0x5004 398 #define PTRACE_POKEDATA_AREA 0x5005 399 #define PTRACE_GET_LAST_BREAK 0x5006 400 #define PTRACE_PEEK_SYSTEM_CALL 0x5007 401 #define PTRACE_POKE_SYSTEM_CALL 0x5008 402 #define PTRACE_ENABLE_TE 0x5009 403 #define PTRACE_DISABLE_TE 0x5010 404 #define PTRACE_TE_ABORT_RAND 0x5011 405 406 /* 407 * The numbers chosen here are somewhat arbitrary but absolutely MUST 408 * not overlap with any of the number assigned in <linux/ptrace.h>. 409 */ 410 #define PTRACE_SINGLEBLOCK 12 /* resume execution until next branch */ 411 412 /* 413 * PT_PROT definition is loosely based on hppa bsd definition in 414 * gdb/hppab-nat.c 415 */ 416 #define PTRACE_PROT 21 417 418 typedef enum { 419 ptprot_set_access_watchpoint, 420 ptprot_set_write_watchpoint, 421 ptprot_disable_watchpoint 422 } ptprot_flags; 423 424 typedef struct { 425 unsigned long lowaddr; 426 unsigned long hiaddr; 427 ptprot_flags prot; 428 } ptprot_area; 429 430 /* Sequence of bytes for breakpoint illegal instruction. */ 431 #define S390_BREAKPOINT {0x0,0x1} 432 #define S390_BREAKPOINT_U16 ((__u16)0x0001) 433 #define S390_SYSCALL_OPCODE ((__u16)0x0a00) 434 #define S390_SYSCALL_SIZE 2 435 436 /* 437 * The user_regs_struct defines the way the user registers are 438 * store on the stack for signal handling. 439 */ 440 struct user_regs_struct { 441 psw_t psw; 442 unsigned long gprs[NUM_GPRS]; 443 unsigned int acrs[NUM_ACRS]; 444 unsigned long orig_gpr2; 445 s390_fp_regs fp_regs; 446 /* 447 * These per registers are in here so that gdb can modify them 448 * itself as there is no "official" ptrace interface for hardware 449 * watchpoints. This is the way intel does it. 450 */ 451 per_struct per_info; 452 unsigned long ieee_instruction_pointer; /* obsolete, always 0 */ 453 }; 454 455 #endif /* __ASSEMBLY__ */ 456 457 #endif /* _UAPI_S390_PTRACE_H */ 458