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

   1 /*
   2  *  S390 version
   3  *    Copyright IBM Corp. 1999, 2000
   4  *    Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
   5  */
   6
   7 #ifndef _UAPI_S390_PTRACE_H
   8 #define _UAPI_S390_PTRACE_H
   9
  10 /*
  11  * Offsets in the user_regs_struct. They are used for the ptrace
  12  * system call and in entry.S
  13  */
  14 #ifndef __s390x__
  15
  16 #define PT_PSWMASK  0x00
  17 #define PT_PSWADDR  0x04
  18 #define PT_GPR0     0x08
  19 #define PT_GPR1     0x0C
  20 #define PT_GPR2     0x10
  21 #define PT_GPR3     0x14
  22 #define PT_GPR4     0x18
  23 #define PT_GPR5     0x1C
  24 #define PT_GPR6     0x20
  25 #define PT_GPR7     0x24
  26 #define PT_GPR8     0x28
  27 #define PT_GPR9     0x2C
  28 #define PT_GPR10    0x30
  29 #define PT_GPR11    0x34
  30 #define PT_GPR12    0x38
  31 #define PT_GPR13    0x3C
  32 #define PT_GPR14    0x40
  33 #define PT_GPR15    0x44
  34 #define PT_ACR0     0x48
  35 #define PT_ACR1     0x4C
  36 #define PT_ACR2     0x50
  37 #define PT_ACR3     0x54
  38 #define PT_ACR4     0x58
  39 #define PT_ACR5     0x5C
  40 #define PT_ACR6     0x60
  41 #define PT_ACR7     0x64
  42 #define PT_ACR8     0x68
  43 #define PT_ACR9     0x6C
  44 #define PT_ACR10    0x70
  45 #define PT_ACR11    0x74
  46 #define PT_ACR12    0x78
  47 #define PT_ACR13    0x7C
  48 #define PT_ACR14    0x80
  49 #define PT_ACR15    0x84
  50 #define PT_ORIGGPR2 0x88
  51 #define PT_FPC      0x90
  52 /*
  53  * A nasty fact of life that the ptrace api
  54  * only supports passing of longs.
  55  */
  56 #define PT_FPR0_HI  0x98
  57 #define PT_FPR0_LO  0x9C
  58 #define PT_FPR1_HI  0xA0
  59 #define PT_FPR1_LO  0xA4
  60 #define PT_FPR2_HI  0xA8
  61 #define PT_FPR2_LO  0xAC
  62 #define PT_FPR3_HI  0xB0
  63 #define PT_FPR3_LO  0xB4
  64 #define PT_FPR4_HI  0xB8
  65 #define PT_FPR4_LO  0xBC
  66 #define PT_FPR5_HI  0xC0
  67 #define PT_FPR5_LO  0xC4
  68 #define PT_FPR6_HI  0xC8
  69 #define PT_FPR6_LO  0xCC
  70 #define PT_FPR7_HI  0xD0
  71 #define PT_FPR7_LO  0xD4
  72 #define PT_FPR8_HI  0xD8
  73 #define PT_FPR8_LO  0XDC
  74 #define PT_FPR9_HI  0xE0
  75 #define PT_FPR9_LO  0xE4
  76 #define PT_FPR10_HI 0xE8
  77 #define PT_FPR10_LO 0xEC
  78 #define PT_FPR11_HI 0xF0
  79 #define PT_FPR11_LO 0xF4
  80 #define PT_FPR12_HI 0xF8
  81 #define PT_FPR12_LO 0xFC
  82 #define PT_FPR13_HI 0x100
  83 #define PT_FPR13_LO 0x104
  84 #define PT_FPR14_HI 0x108
  85 #define PT_FPR14_LO 0x10C
  86 #define PT_FPR15_HI 0x110
  87 #define PT_FPR15_LO 0x114
  88 #define PT_CR_9     0x118
  89 #define PT_CR_10    0x11C
  90 #define PT_CR_11    0x120
  91 #define PT_IEEE_IP  0x13C
  92 #define PT_LASTOFF  PT_IEEE_IP
  93 #define PT_ENDREGS  0x140-1
  94
  95 #define GPR_SIZE        4
  96 #define CR_SIZE         4
  97
  98 #define STACK_FRAME_OVERHEAD    96      /* size of minimum stack frame */
  99
 100 #else /* __s390x__ */
 101
 102 #define PT_PSWMASK  0x00
 103 #define PT_PSWADDR  0x08
 104 #define PT_GPR0     0x10
 105 #define PT_GPR1     0x18
 106 #define PT_GPR2     0x20
 107 #define PT_GPR3     0x28
 108 #define PT_GPR4     0x30
 109 #define PT_GPR5     0x38
 110 #define PT_GPR6     0x40
 111 #define PT_GPR7     0x48
 112 #define PT_GPR8     0x50
 113 #define PT_GPR9     0x58
 114 #define PT_GPR10    0x60
 115 #define PT_GPR11    0x68
 116 #define PT_GPR12    0x70
 117 #define PT_GPR13    0x78
 118 #define PT_GPR14    0x80
 119 #define PT_GPR15    0x88
 120 #define PT_ACR0     0x90
 121 #define PT_ACR1     0x94
 122 #define PT_ACR2     0x98
 123 #define PT_ACR3     0x9C
 124 #define PT_ACR4     0xA0
 125 #define PT_ACR5     0xA4
 126 #define PT_ACR6     0xA8
 127 #define PT_ACR7     0xAC
 128 #define PT_ACR8     0xB0
 129 #define PT_ACR9     0xB4
 130 #define PT_ACR10    0xB8
 131 #define PT_ACR11    0xBC
 132 #define PT_ACR12    0xC0
 133 #define PT_ACR13    0xC4
 134 #define PT_ACR14    0xC8
 135 #define PT_ACR15    0xCC
 136 #define PT_ORIGGPR2 0xD0
 137 #define PT_FPC      0xD8
 138 #define PT_FPR0     0xE0
 139 #define PT_FPR1     0xE8
 140 #define PT_FPR2     0xF0
 141 #define PT_FPR3     0xF8
 142 #define PT_FPR4     0x100
 143 #define PT_FPR5     0x108
 144 #define PT_FPR6     0x110
 145 #define PT_FPR7     0x118
 146 #define PT_FPR8     0x120
 147 #define PT_FPR9     0x128
 148 #define PT_FPR10    0x130
 149 #define PT_FPR11    0x138
 150 #define PT_FPR12    0x140
 151 #define PT_FPR13    0x148
 152 #define PT_FPR14    0x150
 153 #define PT_FPR15    0x158
 154 #define PT_CR_9     0x160
 155 #define PT_CR_10    0x168
 156 #define PT_CR_11    0x170
 157 #define PT_IEEE_IP  0x1A8
 158 #define PT_LASTOFF  PT_IEEE_IP
 159 #define PT_ENDREGS  0x1B0-1
 160
 161 #define GPR_SIZE        8
 162 #define CR_SIZE         8
 163
 164 #define STACK_FRAME_OVERHEAD    160      /* size of minimum stack frame */
 165
 166 #endif /* __s390x__ */
 167
 168 #define NUM_GPRS        16
 169 #define NUM_FPRS        16
 170 #define NUM_CRS         16
 171 #define NUM_ACRS        16
 172
 173 #define NUM_CR_WORDS    3
 174
 175 #define FPR_SIZE        8
 176 #define FPC_SIZE        4
 177 #define FPC_PAD_SIZE    4 /* gcc insists on aligning the fpregs */
 178 #define ACR_SIZE        4
 179
 180
 181 #define PTRACE_OLDSETOPTIONS         21
 182
 183 #ifndef __ASSEMBLY__
 184 #include <linux/stddef.h>
 185 #include <linux/types.h>
 186
 187 typedef union
 188 {
 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 {
 201         __u32   fpc;
 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 #define FPC_VALID_MASK          0xF8F8FF03
 210
 211 /* this typedef defines how a Program Status Word looks like */
 212 typedef struct
 213 {
 214         unsigned long mask;
 215         unsigned long addr;
 216 } __attribute__ ((aligned(8))) psw_t;
 217
 218 #ifndef __s390x__
 219
 220 #define PSW_MASK_PER            0x40000000UL
 221 #define PSW_MASK_DAT            0x04000000UL
 222 #define PSW_MASK_IO             0x02000000UL
 223 #define PSW_MASK_EXT            0x01000000UL
 224 #define PSW_MASK_KEY            0x00F00000UL
 225 #define PSW_MASK_BASE           0x00080000UL    /* always one */
 226 #define PSW_MASK_MCHECK         0x00040000UL
 227 #define PSW_MASK_WAIT           0x00020000UL
 228 #define PSW_MASK_PSTATE         0x00010000UL
 229 #define PSW_MASK_ASC            0x0000C000UL
 230 #define PSW_MASK_CC             0x00003000UL
 231 #define PSW_MASK_PM             0x00000F00UL
 232 #define PSW_MASK_RI             0x00000000UL
 233 #define PSW_MASK_EA             0x00000000UL
 234 #define PSW_MASK_BA             0x00000000UL
 235
 236 #define PSW_MASK_USER           0x0000FF00UL
 237
 238 #define PSW_ADDR_AMODE          0x80000000UL
 239 #define PSW_ADDR_INSN           0x7FFFFFFFUL
 240
 241 #define PSW_DEFAULT_KEY         (((unsigned long) PAGE_DEFAULT_ACC) << 20)
 242
 243 #define PSW_ASC_PRIMARY         0x00000000UL
 244 #define PSW_ASC_ACCREG          0x00004000UL
 245 #define PSW_ASC_SECONDARY       0x00008000UL
 246 #define PSW_ASC_HOME            0x0000C000UL
 247
 248 #else /* __s390x__ */
 249
 250 #define PSW_MASK_PER            0x4000000000000000UL
 251 #define PSW_MASK_DAT            0x0400000000000000UL
 252 #define PSW_MASK_IO             0x0200000000000000UL
 253 #define PSW_MASK_EXT            0x0100000000000000UL
 254 #define PSW_MASK_BASE           0x0000000000000000UL
 255 #define PSW_MASK_KEY            0x00F0000000000000UL
 256 #define PSW_MASK_MCHECK         0x0004000000000000UL
 257 #define PSW_MASK_WAIT           0x0002000000000000UL
 258 #define PSW_MASK_PSTATE         0x0001000000000000UL
 259 #define PSW_MASK_ASC            0x0000C00000000000UL
 260 #define PSW_MASK_CC             0x0000300000000000UL
 261 #define PSW_MASK_PM             0x00000F0000000000UL
 262 #define PSW_MASK_RI             0x0000008000000000UL
 263 #define PSW_MASK_EA             0x0000000100000000UL
 264 #define PSW_MASK_BA             0x0000000080000000UL
 265
 266 #define PSW_MASK_USER           0x0000FF8180000000UL
 267
 268 #define PSW_ADDR_AMODE          0x0000000000000000UL
 269 #define PSW_ADDR_INSN           0xFFFFFFFFFFFFFFFFUL
 270
 271 #define PSW_DEFAULT_KEY         (((unsigned long) PAGE_DEFAULT_ACC) << 52)
 272
 273 #define PSW_ASC_PRIMARY         0x0000000000000000UL
 274 #define PSW_ASC_ACCREG          0x0000400000000000UL
 275 #define PSW_ASC_SECONDARY       0x0000800000000000UL
 276 #define PSW_ASC_HOME            0x0000C00000000000UL
 277
 278 #endif /* __s390x__ */
 279
 280
 281 /*
 282  * The s390_regs structure is used to define the elf_gregset_t.
 283  */
 284 typedef struct
 285 {
 286         psw_t psw;
 287         unsigned long gprs[NUM_GPRS];
 288         unsigned int  acrs[NUM_ACRS];
 289         unsigned long orig_gpr2;
 290 } s390_regs;
 291
 292 /*
 293  * Now for the user space program event recording (trace) definitions.
 294  * The following structures are used only for the ptrace interface, don't
 295  * touch or even look at it if you don't want to modify the user-space
 296  * ptrace interface. In particular stay away from it for in-kernel PER.
 297  */
 298 typedef struct
 299 {
 300         unsigned long cr[NUM_CR_WORDS];
 301 } per_cr_words;
 302
 303 #define PER_EM_MASK 0xE8000000UL
 304
 305 typedef struct
 306 {
 307 #ifdef __s390x__
 308         unsigned                       : 32;
 309 #endif /* __s390x__ */
 310         unsigned em_branching          : 1;
 311         unsigned em_instruction_fetch  : 1;
 312         /*
 313          * Switching on storage alteration automatically fixes
 314          * the storage alteration event bit in the users std.
 315          */
 316         unsigned em_storage_alteration : 1;
 317         unsigned em_gpr_alt_unused     : 1;
 318         unsigned em_store_real_address : 1;
 319         unsigned                       : 3;
 320         unsigned branch_addr_ctl       : 1;
 321         unsigned                       : 1;
 322         unsigned storage_alt_space_ctl : 1;
 323         unsigned                       : 21;
 324         unsigned long starting_addr;
 325         unsigned long ending_addr;
 326 } per_cr_bits;
 327
 328 typedef struct
 329 {
 330         unsigned short perc_atmid;
 331         unsigned long address;
 332         unsigned char access_id;
 333 } per_lowcore_words;
 334
 335 typedef struct
 336 {
 337         unsigned perc_branching          : 1;
 338         unsigned perc_instruction_fetch  : 1;
 339         unsigned perc_storage_alteration : 1;
 340         unsigned perc_gpr_alt_unused     : 1;
 341         unsigned perc_store_real_address : 1;
 342         unsigned                         : 3;
 343         unsigned atmid_psw_bit_31        : 1;
 344         unsigned atmid_validity_bit      : 1;
 345         unsigned atmid_psw_bit_32        : 1;
 346         unsigned atmid_psw_bit_5         : 1;
 347         unsigned atmid_psw_bit_16        : 1;
 348         unsigned atmid_psw_bit_17        : 1;
 349         unsigned si                      : 2;
 350         unsigned long address;
 351         unsigned                         : 4;
 352         unsigned access_id               : 4;
 353 } per_lowcore_bits;
 354
 355 typedef struct
 356 {
 357         union {
 358                 per_cr_words   words;
 359                 per_cr_bits    bits;
 360         } control_regs;
 361         /*
 362          * Use these flags instead of setting em_instruction_fetch
 363          * directly they are used so that single stepping can be
 364          * switched on & off while not affecting other tracing
 365          */
 366         unsigned  single_step       : 1;
 367         unsigned  instruction_fetch : 1;
 368         unsigned                    : 30;
 369         /*
 370          * These addresses are copied into cr10 & cr11 if single
 371          * stepping is switched off
 372          */
 373         unsigned long starting_addr;
 374         unsigned long ending_addr;
 375         union {
 376                 per_lowcore_words words;
 377                 per_lowcore_bits  bits;
 378         } lowcore;
 379 } per_struct;
 380
 381 typedef struct
 382 {
 383         unsigned int  len;
 384         unsigned long kernel_addr;
 385         unsigned long process_addr;
 386 } ptrace_area;
 387
 388 /*
 389  * S/390 specific non posix ptrace requests. I chose unusual values so
 390  * they are unlikely to clash with future ptrace definitions.
 391  */
 392 #define PTRACE_PEEKUSR_AREA           0x5000
 393 #define PTRACE_POKEUSR_AREA           0x5001
 394 #define PTRACE_PEEKTEXT_AREA          0x5002
 395 #define PTRACE_PEEKDATA_AREA          0x5003
 396 #define PTRACE_POKETEXT_AREA          0x5004
 397 #define PTRACE_POKEDATA_AREA          0x5005
 398 #define PTRACE_GET_LAST_BREAK         0x5006
 399 #define PTRACE_PEEK_SYSTEM_CALL       0x5007
 400 #define PTRACE_POKE_SYSTEM_CALL       0x5008
 401 #define PTRACE_ENABLE_TE              0x5009
 402 #define PTRACE_DISABLE_TE             0x5010
 403
 404 /*
 405  * PT_PROT definition is loosely based on hppa bsd definition in
 406  * gdb/hppab-nat.c
 407  */
 408 #define PTRACE_PROT                       21
 409
 410 typedef enum
 411 {
 412         ptprot_set_access_watchpoint,
 413         ptprot_set_write_watchpoint,
 414         ptprot_disable_watchpoint
 415 } ptprot_flags;
 416
 417 typedef struct
 418 {
 419         unsigned long lowaddr;
 420         unsigned long hiaddr;
 421         ptprot_flags prot;
 422 } ptprot_area;
 423
 424 /* Sequence of bytes for breakpoint illegal instruction.  */
 425 #define S390_BREAKPOINT     {0x0,0x1}
 426 #define S390_BREAKPOINT_U16 ((__u16)0x0001)
 427 #define S390_SYSCALL_OPCODE ((__u16)0x0a00)
 428 #define S390_SYSCALL_SIZE   2
 429
 430 /*
 431  * The user_regs_struct defines the way the user registers are
 432  * store on the stack for signal handling.
 433  */
 434 struct user_regs_struct
 435 {
 436         psw_t psw;
 437         unsigned long gprs[NUM_GPRS];
 438         unsigned int  acrs[NUM_ACRS];
 439         unsigned long orig_gpr2;
 440         s390_fp_regs fp_regs;
 441         /*
 442          * These per registers are in here so that gdb can modify them
 443          * itself as there is no "official" ptrace interface for hardware
 444          * watchpoints. This is the way intel does it.
 445          */
 446         per_struct per_info;
 447         unsigned long ieee_instruction_pointer; /* obsolete, always 0 */
 448 };
 449
 450 #endif /* __ASSEMBLY__ */
 451
 452 #endif /* _UAPI_S390_PTRACE_H */