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 #ifndef __s390x__ 170 171 #define PSW_MASK_PER _AC(0x40000000, UL) 172 #define PSW_MASK_DAT _AC(0x04000000, UL) 173 #define PSW_MASK_IO _AC(0x02000000, UL) 174 #define PSW_MASK_EXT _AC(0x01000000, UL) 175 #define PSW_MASK_KEY _AC(0x00F00000, UL) 176 #define PSW_MASK_BASE _AC(0x00080000, UL) /* always one */ 177 #define PSW_MASK_MCHECK _AC(0x00040000, UL) 178 #define PSW_MASK_WAIT _AC(0x00020000, UL) 179 #define PSW_MASK_PSTATE _AC(0x00010000, UL) 180 #define PSW_MASK_ASC _AC(0x0000C000, UL) 181 #define PSW_MASK_CC _AC(0x00003000, UL) 182 #define PSW_MASK_PM _AC(0x00000F00, UL) 183 #define PSW_MASK_RI _AC(0x00000000, UL) 184 #define PSW_MASK_EA _AC(0x00000000, UL) 185 #define PSW_MASK_BA _AC(0x00000000, UL) 186 187 #define PSW_MASK_USER _AC(0x0000FF00, UL) 188 189 #define PSW_ADDR_AMODE _AC(0x80000000, UL) 190 #define PSW_ADDR_INSN _AC(0x7FFFFFFF, UL) 191 192 #define PSW_ASC_PRIMARY _AC(0x00000000, UL) 193 #define PSW_ASC_ACCREG _AC(0x00004000, UL) 194 #define PSW_ASC_SECONDARY _AC(0x00008000, UL) 195 #define PSW_ASC_HOME _AC(0x0000C000, UL) 196 197 #else /* __s390x__ */ 198 199 #define PSW_MASK_PER _AC(0x4000000000000000, UL) 200 #define PSW_MASK_DAT _AC(0x0400000000000000, UL) 201 #define PSW_MASK_IO _AC(0x0200000000000000, UL) 202 #define PSW_MASK_EXT _AC(0x0100000000000000, UL) 203 #define PSW_MASK_BASE _AC(0x0000000000000000, UL) 204 #define PSW_MASK_KEY _AC(0x00F0000000000000, UL) 205 #define PSW_MASK_MCHECK _AC(0x0004000000000000, UL) 206 #define PSW_MASK_WAIT _AC(0x0002000000000000, UL) 207 #define PSW_MASK_PSTATE _AC(0x0001000000000000, UL) 208 #define PSW_MASK_ASC _AC(0x0000C00000000000, UL) 209 #define PSW_MASK_CC _AC(0x0000300000000000, UL) 210 #define PSW_MASK_PM _AC(0x00000F0000000000, UL) 211 #define PSW_MASK_RI _AC(0x0000008000000000, UL) 212 #define PSW_MASK_EA _AC(0x0000000100000000, UL) 213 #define PSW_MASK_BA _AC(0x0000000080000000, UL) 214 215 #define PSW_MASK_USER _AC(0x0000FF0180000000, UL) 216 217 #define PSW_ADDR_AMODE _AC(0x0000000000000000, UL) 218 #define PSW_ADDR_INSN _AC(0xFFFFFFFFFFFFFFFF, UL) 219 220 #define PSW_ASC_PRIMARY _AC(0x0000000000000000, UL) 221 #define PSW_ASC_ACCREG _AC(0x0000400000000000, UL) 222 #define PSW_ASC_SECONDARY _AC(0x0000800000000000, UL) 223 #define PSW_ASC_HOME _AC(0x0000C00000000000, UL) 224 225 #endif /* __s390x__ */ 226 227 #define NUM_GPRS 16 228 #define NUM_FPRS 16 229 #define NUM_CRS 16 230 #define NUM_ACRS 16 231 232 #define NUM_CR_WORDS 3 233 234 #define FPR_SIZE 8 235 #define FPC_SIZE 4 236 #define FPC_PAD_SIZE 4 /* gcc insists on aligning the fpregs */ 237 #define ACR_SIZE 4 238 239 240 #define PTRACE_OLDSETOPTIONS 21 241 #define PTRACE_SYSEMU 31 242 #define PTRACE_SYSEMU_SINGLESTEP 32 243 #ifndef __ASSEMBLY__ 244 #include <linux/stddef.h> 245 #include <linux/types.h> 246 247 typedef union { 248 float f; 249 double d; 250 __u64 ui; 251 struct 252 { 253 __u32 hi; 254 __u32 lo; 255 } fp; 256 } freg_t; 257 258 typedef struct { 259 __u32 fpc; 260 __u32 pad; 261 freg_t fprs[NUM_FPRS]; 262 } s390_fp_regs; 263 264 #define FPC_EXCEPTION_MASK 0xF8000000 265 #define FPC_FLAGS_MASK 0x00F80000 266 #define FPC_DXC_MASK 0x0000FF00 267 #define FPC_RM_MASK 0x00000003 268 269 /* this typedef defines how a Program Status Word looks like */ 270 typedef struct { 271 unsigned long mask; 272 unsigned long addr; 273 } __attribute__ ((aligned(8))) psw_t; 274 275 /* 276 * The s390_regs structure is used to define the elf_gregset_t. 277 */ 278 typedef struct { 279 psw_t psw; 280 unsigned long gprs[NUM_GPRS]; 281 unsigned int acrs[NUM_ACRS]; 282 unsigned long orig_gpr2; 283 } s390_regs; 284 285 /* 286 * The user_pt_regs structure exports the beginning of 287 * the in-kernel pt_regs structure to user space. 288 */ 289 typedef struct { 290 unsigned long args[1]; 291 psw_t psw; 292 unsigned long gprs[NUM_GPRS]; 293 } user_pt_regs; 294 295 /* 296 * Now for the user space program event recording (trace) definitions. 297 * The following structures are used only for the ptrace interface, don't 298 * touch or even look at it if you don't want to modify the user-space 299 * ptrace interface. In particular stay away from it for in-kernel PER. 300 */ 301 typedef struct { 302 unsigned long cr[NUM_CR_WORDS]; 303 } per_cr_words; 304 305 #define PER_EM_MASK 0xE8000000UL 306 307 typedef struct { 308 #ifdef __s390x__ 309 unsigned : 32; 310 #endif /* __s390x__ */ 311 unsigned em_branching : 1; 312 unsigned em_instruction_fetch : 1; 313 /* 314 * Switching on storage alteration automatically fixes 315 * the storage alteration event bit in the users std. 316 */ 317 unsigned em_storage_alteration : 1; 318 unsigned em_gpr_alt_unused : 1; 319 unsigned em_store_real_address : 1; 320 unsigned : 3; 321 unsigned branch_addr_ctl : 1; 322 unsigned : 1; 323 unsigned storage_alt_space_ctl : 1; 324 unsigned : 21; 325 unsigned long starting_addr; 326 unsigned long ending_addr; 327 } per_cr_bits; 328 329 typedef struct { 330 unsigned short perc_atmid; 331 unsigned long address; 332 unsigned char access_id; 333 } per_lowcore_words; 334 335 typedef struct { 336 unsigned perc_branching : 1; 337 unsigned perc_instruction_fetch : 1; 338 unsigned perc_storage_alteration : 1; 339 unsigned perc_gpr_alt_unused : 1; 340 unsigned perc_store_real_address : 1; 341 unsigned : 3; 342 unsigned atmid_psw_bit_31 : 1; 343 unsigned atmid_validity_bit : 1; 344 unsigned atmid_psw_bit_32 : 1; 345 unsigned atmid_psw_bit_5 : 1; 346 unsigned atmid_psw_bit_16 : 1; 347 unsigned atmid_psw_bit_17 : 1; 348 unsigned si : 2; 349 unsigned long address; 350 unsigned : 4; 351 unsigned access_id : 4; 352 } per_lowcore_bits; 353 354 typedef struct { 355 union { 356 per_cr_words words; 357 per_cr_bits bits; 358 } control_regs; 359 /* 360 * The single_step and instruction_fetch bits are obsolete, 361 * the kernel always sets them to zero. To enable single 362 * stepping use ptrace(PTRACE_SINGLESTEP) instead. 363 */ 364 unsigned single_step : 1; 365 unsigned instruction_fetch : 1; 366 unsigned : 30; 367 /* 368 * These addresses are copied into cr10 & cr11 if single 369 * stepping is switched off 370 */ 371 unsigned long starting_addr; 372 unsigned long ending_addr; 373 union { 374 per_lowcore_words words; 375 per_lowcore_bits bits; 376 } lowcore; 377 } per_struct; 378 379 typedef struct { 380 unsigned int len; 381 unsigned long kernel_addr; 382 unsigned long process_addr; 383 } ptrace_area; 384 385 /* 386 * S/390 specific non posix ptrace requests. I chose unusual values so 387 * they are unlikely to clash with future ptrace definitions. 388 */ 389 #define PTRACE_PEEKUSR_AREA 0x5000 390 #define PTRACE_POKEUSR_AREA 0x5001 391 #define PTRACE_PEEKTEXT_AREA 0x5002 392 #define PTRACE_PEEKDATA_AREA 0x5003 393 #define PTRACE_POKETEXT_AREA 0x5004 394 #define PTRACE_POKEDATA_AREA 0x5005 395 #define PTRACE_GET_LAST_BREAK 0x5006 396 #define PTRACE_PEEK_SYSTEM_CALL 0x5007 397 #define PTRACE_POKE_SYSTEM_CALL 0x5008 398 #define PTRACE_ENABLE_TE 0x5009 399 #define PTRACE_DISABLE_TE 0x5010 400 #define PTRACE_TE_ABORT_RAND 0x5011 401 402 /* 403 * The numbers chosen here are somewhat arbitrary but absolutely MUST 404 * not overlap with any of the number assigned in <linux/ptrace.h>. 405 */ 406 #define PTRACE_SINGLEBLOCK 12 /* resume execution until next branch */ 407 408 /* 409 * PT_PROT definition is loosely based on hppa bsd definition in 410 * gdb/hppab-nat.c 411 */ 412 #define PTRACE_PROT 21 413 414 typedef enum { 415 ptprot_set_access_watchpoint, 416 ptprot_set_write_watchpoint, 417 ptprot_disable_watchpoint 418 } ptprot_flags; 419 420 typedef struct { 421 unsigned long lowaddr; 422 unsigned long hiaddr; 423 ptprot_flags prot; 424 } ptprot_area; 425 426 /* Sequence of bytes for breakpoint illegal instruction. */ 427 #define S390_BREAKPOINT {0x0,0x1} 428 #define S390_BREAKPOINT_U16 ((__u16)0x0001) 429 #define S390_SYSCALL_OPCODE ((__u16)0x0a00) 430 #define S390_SYSCALL_SIZE 2 431 432 /* 433 * The user_regs_struct defines the way the user registers are 434 * store on the stack for signal handling. 435 */ 436 struct user_regs_struct { 437 psw_t psw; 438 unsigned long gprs[NUM_GPRS]; 439 unsigned int acrs[NUM_ACRS]; 440 unsigned long orig_gpr2; 441 s390_fp_regs fp_regs; 442 /* 443 * These per registers are in here so that gdb can modify them 444 * itself as there is no "official" ptrace interface for hardware 445 * watchpoints. This is the way intel does it. 446 */ 447 per_struct per_info; 448 unsigned long ieee_instruction_pointer; /* obsolete, always 0 */ 449 }; 450 451 #endif /* __ASSEMBLY__ */ 452 453 #endif /* _UAPI_S390_PTRACE_H */ 454