arch/s390/include/uapi/asm/ptrace.h

   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 */