linux/arch/s390/include/uapi/asm/ptrace.h
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   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
 187typedef 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
 199typedef struct
 200{
 201        __u32   fpc;
 202        __u32   pad;
 203        freg_t  fprs[NUM_FPRS];              
 204} s390_fp_regs;
 205
 206#define FPC_EXCEPTION_MASK      0xF8000000
 207#define FPC_FLAGS_MASK          0x00F80000
 208#define FPC_DXC_MASK            0x0000FF00
 209#define FPC_RM_MASK             0x00000003
 210
 211/* this typedef defines how a Program Status Word looks like */
 212typedef 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           0x0000FF0180000000UL
 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 */
 284typedef 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 */
 298typedef struct
 299{
 300        unsigned long cr[NUM_CR_WORDS];
 301} per_cr_words;
 302
 303#define PER_EM_MASK 0xE8000000UL
 304
 305typedef 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
 328typedef struct
 329{
 330        unsigned short perc_atmid;
 331        unsigned long address;
 332        unsigned char access_id;
 333} per_lowcore_words;
 334
 335typedef 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
 355typedef 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
 381typedef 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#define PTRACE_TE_ABORT_RAND          0x5011
 404
 405/*
 406 * The numbers chosen here are somewhat arbitrary but absolutely MUST
 407 * not overlap with any of the number assigned in <linux/ptrace.h>.
 408 */
 409#define PTRACE_SINGLEBLOCK      12      /* resume execution until next branch */
 410
 411/*
 412 * PT_PROT definition is loosely based on hppa bsd definition in
 413 * gdb/hppab-nat.c
 414 */
 415#define PTRACE_PROT                       21
 416
 417typedef enum
 418{
 419        ptprot_set_access_watchpoint,
 420        ptprot_set_write_watchpoint,
 421        ptprot_disable_watchpoint
 422} ptprot_flags;
 423
 424typedef struct
 425{
 426        unsigned long lowaddr;
 427        unsigned long hiaddr;
 428        ptprot_flags prot;
 429} ptprot_area;                     
 430
 431/* Sequence of bytes for breakpoint illegal instruction.  */
 432#define S390_BREAKPOINT     {0x0,0x1}
 433#define S390_BREAKPOINT_U16 ((__u16)0x0001)
 434#define S390_SYSCALL_OPCODE ((__u16)0x0a00)
 435#define S390_SYSCALL_SIZE   2
 436
 437/*
 438 * The user_regs_struct defines the way the user registers are
 439 * store on the stack for signal handling.
 440 */
 441struct user_regs_struct
 442{
 443        psw_t psw;
 444        unsigned long gprs[NUM_GPRS];
 445        unsigned int  acrs[NUM_ACRS];
 446        unsigned long orig_gpr2;
 447        s390_fp_regs fp_regs;
 448        /*
 449         * These per registers are in here so that gdb can modify them
 450         * itself as there is no "official" ptrace interface for hardware
 451         * watchpoints. This is the way intel does it.
 452         */
 453        per_struct per_info;
 454        unsigned long ieee_instruction_pointer; /* obsolete, always 0 */
 455};
 456
 457#endif /* __ASSEMBLY__ */
 458
 459#endif /* _UAPI_S390_PTRACE_H */
 460