gdb/s390-tdep.h

   1 /* Target-dependent code for s390.
   2
   3    Copyright (C) 2003-2021 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef S390_TDEP_H
  21 #define S390_TDEP_H
  22
  23 #include "prologue-value.h"
  24
  25 enum s390_abi_kind
  26 {
  27   ABI_NONE,
  28   ABI_LINUX_S390,
  29   ABI_LINUX_ZSERIES
  30 };
  31
  32 enum s390_vector_abi_kind
  33 {
  34   S390_VECTOR_ABI_NONE,
  35   S390_VECTOR_ABI_128
  36 };
  37
  38 /* The tdep structure.  */
  39
  40 struct gdbarch_tdep
  41 {
  42   /* Target description.  */
  43   const struct target_desc *tdesc;
  44
  45   /* ABI version.  */
  46   enum s390_abi_kind abi;
  47
  48   /* Vector ABI.  */
  49   enum s390_vector_abi_kind vector_abi;
  50
  51   /* Pseudo register numbers.  */
  52   int gpr_full_regnum;
  53   int pc_regnum;
  54   int cc_regnum;
  55   int v0_full_regnum;
  56
  57   bool have_upper;
  58   bool have_linux_v1;
  59   bool have_linux_v2;
  60   bool have_tdb;
  61   bool have_vx;
  62   bool have_gs;
  63
  64   /* Hook to record OS specific systemcall.  */
  65   int (*s390_syscall_record) (struct regcache *regcache, LONGEST svc_number);
  66 };
  67
  68 /* Decoding S/390 instructions.  */
  69
  70 /* Named opcode values for the S/390 instructions we recognize.  Some
  71    instructions have their opcode split across two fields; those are the
  72    op1_* and op2_* enums.  */
  73
  74 enum
  75 {
  76   op1_lhi  = 0xa7,   op2_lhi  = 0x08,
  77   op1_lghi = 0xa7,   op2_lghi = 0x09,
  78   op1_lgfi = 0xc0,   op2_lgfi = 0x01,
  79   op_lr    = 0x18,
  80   op_lgr   = 0xb904,
  81   op_l     = 0x58,
  82   op1_ly   = 0xe3,   op2_ly   = 0x58,
  83   op1_lg   = 0xe3,   op2_lg   = 0x04,
  84   op_lm    = 0x98,
  85   op1_lmy  = 0xeb,   op2_lmy  = 0x98,
  86   op1_lmg  = 0xeb,   op2_lmg  = 0x04,
  87   op_st    = 0x50,
  88   op1_sty  = 0xe3,   op2_sty  = 0x50,
  89   op1_stg  = 0xe3,   op2_stg  = 0x24,
  90   op_std   = 0x60,
  91   op_stm   = 0x90,
  92   op1_stmy = 0xeb,   op2_stmy = 0x90,
  93   op1_stmg = 0xeb,   op2_stmg = 0x24,
  94   op1_aghi = 0xa7,   op2_aghi = 0x0b,
  95   op1_ahi  = 0xa7,   op2_ahi  = 0x0a,
  96   op1_agfi = 0xc2,   op2_agfi = 0x08,
  97   op1_afi  = 0xc2,   op2_afi  = 0x09,
  98   op1_algfi= 0xc2,   op2_algfi= 0x0a,
  99   op1_alfi = 0xc2,   op2_alfi = 0x0b,
 100   op_ar    = 0x1a,
 101   op_agr   = 0xb908,
 102   op_a     = 0x5a,
 103   op1_ay   = 0xe3,   op2_ay   = 0x5a,
 104   op1_ag   = 0xe3,   op2_ag   = 0x08,
 105   op1_slgfi= 0xc2,   op2_slgfi= 0x04,
 106   op1_slfi = 0xc2,   op2_slfi = 0x05,
 107   op_sr    = 0x1b,
 108   op_sgr   = 0xb909,
 109   op_s     = 0x5b,
 110   op1_sy   = 0xe3,   op2_sy   = 0x5b,
 111   op1_sg   = 0xe3,   op2_sg   = 0x09,
 112   op_nr    = 0x14,
 113   op_ngr   = 0xb980,
 114   op_la    = 0x41,
 115   op1_lay  = 0xe3,   op2_lay  = 0x71,
 116   op1_larl = 0xc0,   op2_larl = 0x00,
 117   op_basr  = 0x0d,
 118   op_bas   = 0x4d,
 119   op_bcr   = 0x07,
 120   op_bc    = 0x47,
 121   op_bctr  = 0x06,
 122   op_bctgr = 0xb946,
 123   op_bct   = 0x46,
 124   op1_bctg = 0xe3,   op2_bctg = 0x46,
 125   op_bxh   = 0x86,
 126   op1_bxhg = 0xeb,   op2_bxhg = 0x44,
 127   op_bxle  = 0x87,
 128   op1_bxleg= 0xeb,   op2_bxleg= 0x45,
 129   op1_bras = 0xa7,   op2_bras = 0x05,
 130   op1_brasl= 0xc0,   op2_brasl= 0x05,
 131   op1_brc  = 0xa7,   op2_brc  = 0x04,
 132   op1_brcl = 0xc0,   op2_brcl = 0x04,
 133   op1_brct = 0xa7,   op2_brct = 0x06,
 134   op1_brctg= 0xa7,   op2_brctg= 0x07,
 135   op_brxh  = 0x84,
 136   op1_brxhg= 0xec,   op2_brxhg= 0x44,
 137   op_brxle = 0x85,
 138   op1_brxlg= 0xec,   op2_brxlg= 0x45,
 139   op_svc   = 0x0a,
 140 };
 141
 142 /* Hardware capabilities. */
 143
 144 #ifndef HWCAP_S390_HIGH_GPRS
 145 #define HWCAP_S390_HIGH_GPRS 512
 146 #endif
 147
 148 #ifndef HWCAP_S390_TE
 149 #define HWCAP_S390_TE 1024
 150 #endif
 151
 152 #ifndef HWCAP_S390_VX
 153 #define HWCAP_S390_VX 2048
 154 #endif
 155
 156 #ifndef HWCAP_S390_GS
 157 #define HWCAP_S390_GS 16384
 158 #endif
 159
 160 /* Register information.  */
 161
 162 /* Program Status Word.  */
 163 #define S390_PSWM_REGNUM 0
 164 #define S390_PSWA_REGNUM 1
 165 /* General Purpose Registers.  */
 166 #define S390_R0_REGNUM 2
 167 #define S390_R1_REGNUM 3
 168 #define S390_R2_REGNUM 4
 169 #define S390_R3_REGNUM 5
 170 #define S390_R4_REGNUM 6
 171 #define S390_R5_REGNUM 7
 172 #define S390_R6_REGNUM 8
 173 #define S390_R7_REGNUM 9
 174 #define S390_R8_REGNUM 10
 175 #define S390_R9_REGNUM 11
 176 #define S390_R10_REGNUM 12
 177 #define S390_R11_REGNUM 13
 178 #define S390_R12_REGNUM 14
 179 #define S390_R13_REGNUM 15
 180 #define S390_R14_REGNUM 16
 181 #define S390_R15_REGNUM 17
 182 /* Access Registers.  */
 183 #define S390_A0_REGNUM 18
 184 #define S390_A1_REGNUM 19
 185 #define S390_A2_REGNUM 20
 186 #define S390_A3_REGNUM 21
 187 #define S390_A4_REGNUM 22
 188 #define S390_A5_REGNUM 23
 189 #define S390_A6_REGNUM 24
 190 #define S390_A7_REGNUM 25
 191 #define S390_A8_REGNUM 26
 192 #define S390_A9_REGNUM 27
 193 #define S390_A10_REGNUM 28
 194 #define S390_A11_REGNUM 29
 195 #define S390_A12_REGNUM 30
 196 #define S390_A13_REGNUM 31
 197 #define S390_A14_REGNUM 32
 198 #define S390_A15_REGNUM 33
 199 /* Floating Point Control Word.  */
 200 #define S390_FPC_REGNUM 34
 201 /* Floating Point Registers.  */
 202 #define S390_F0_REGNUM 35
 203 #define S390_F1_REGNUM 36
 204 #define S390_F2_REGNUM 37
 205 #define S390_F3_REGNUM 38
 206 #define S390_F4_REGNUM 39
 207 #define S390_F5_REGNUM 40
 208 #define S390_F6_REGNUM 41
 209 #define S390_F7_REGNUM 42
 210 #define S390_F8_REGNUM 43
 211 #define S390_F9_REGNUM 44
 212 #define S390_F10_REGNUM 45
 213 #define S390_F11_REGNUM 46
 214 #define S390_F12_REGNUM 47
 215 #define S390_F13_REGNUM 48
 216 #define S390_F14_REGNUM 49
 217 #define S390_F15_REGNUM 50
 218 /* General Purpose Register Upper Halves.  */
 219 #define S390_R0_UPPER_REGNUM 51
 220 #define S390_R1_UPPER_REGNUM 52
 221 #define S390_R2_UPPER_REGNUM 53
 222 #define S390_R3_UPPER_REGNUM 54
 223 #define S390_R4_UPPER_REGNUM 55
 224 #define S390_R5_UPPER_REGNUM 56
 225 #define S390_R6_UPPER_REGNUM 57
 226 #define S390_R7_UPPER_REGNUM 58
 227 #define S390_R8_UPPER_REGNUM 59
 228 #define S390_R9_UPPER_REGNUM 60
 229 #define S390_R10_UPPER_REGNUM 61
 230 #define S390_R11_UPPER_REGNUM 62
 231 #define S390_R12_UPPER_REGNUM 63
 232 #define S390_R13_UPPER_REGNUM 64
 233 #define S390_R14_UPPER_REGNUM 65
 234 #define S390_R15_UPPER_REGNUM 66
 235 /* GNU/Linux-specific optional registers.  */
 236 #define S390_ORIG_R2_REGNUM 67
 237 #define S390_LAST_BREAK_REGNUM 68
 238 #define S390_SYSTEM_CALL_REGNUM 69
 239 /* Transaction diagnostic block.  */
 240 #define S390_TDB_DWORD0_REGNUM 70
 241 #define S390_TDB_ABORT_CODE_REGNUM 71
 242 #define S390_TDB_CONFLICT_TOKEN_REGNUM 72
 243 #define S390_TDB_ATIA_REGNUM 73
 244 #define S390_TDB_R0_REGNUM 74
 245 #define S390_TDB_R1_REGNUM 75
 246 #define S390_TDB_R2_REGNUM 76
 247 #define S390_TDB_R3_REGNUM 77
 248 #define S390_TDB_R4_REGNUM 78
 249 #define S390_TDB_R5_REGNUM 79
 250 #define S390_TDB_R6_REGNUM 80
 251 #define S390_TDB_R7_REGNUM 81
 252 #define S390_TDB_R8_REGNUM 82
 253 #define S390_TDB_R9_REGNUM 83
 254 #define S390_TDB_R10_REGNUM 84
 255 #define S390_TDB_R11_REGNUM 85
 256 #define S390_TDB_R12_REGNUM 86
 257 #define S390_TDB_R13_REGNUM 87
 258 #define S390_TDB_R14_REGNUM 88
 259 #define S390_TDB_R15_REGNUM 89
 260 /* Vector registers.  */
 261 #define S390_V0_LOWER_REGNUM 90
 262 #define S390_V1_LOWER_REGNUM 91
 263 #define S390_V2_LOWER_REGNUM 92
 264 #define S390_V3_LOWER_REGNUM 93
 265 #define S390_V4_LOWER_REGNUM 94
 266 #define S390_V5_LOWER_REGNUM 95
 267 #define S390_V6_LOWER_REGNUM 96
 268 #define S390_V7_LOWER_REGNUM 97
 269 #define S390_V8_LOWER_REGNUM 98
 270 #define S390_V9_LOWER_REGNUM 99
 271 #define S390_V10_LOWER_REGNUM 100
 272 #define S390_V11_LOWER_REGNUM 101
 273 #define S390_V12_LOWER_REGNUM 102
 274 #define S390_V13_LOWER_REGNUM 103
 275 #define S390_V14_LOWER_REGNUM 104
 276 #define S390_V15_LOWER_REGNUM 105
 277 #define S390_V16_REGNUM 106
 278 #define S390_V17_REGNUM 107
 279 #define S390_V18_REGNUM 108
 280 #define S390_V19_REGNUM 109
 281 #define S390_V20_REGNUM 110
 282 #define S390_V21_REGNUM 111
 283 #define S390_V22_REGNUM 112
 284 #define S390_V23_REGNUM 113
 285 #define S390_V24_REGNUM 114
 286 #define S390_V25_REGNUM 115
 287 #define S390_V26_REGNUM 116
 288 #define S390_V27_REGNUM 117
 289 #define S390_V28_REGNUM 118
 290 #define S390_V29_REGNUM 119
 291 #define S390_V30_REGNUM 120
 292 #define S390_V31_REGNUM 121
 293 #define S390_GSD_REGNUM 122
 294 #define S390_GSSM_REGNUM 123
 295 #define S390_GSEPLA_REGNUM 124
 296 #define S390_BC_GSD_REGNUM 125
 297 #define S390_BC_GSSM_REGNUM 126
 298 #define S390_BC_GSEPLA_REGNUM 127
 299 /* Total.  */
 300 #define S390_NUM_REGS 128
 301
 302 #define S390_NUM_GPRS 16
 303 #define S390_NUM_FPRS 16
 304
 305 #define S390_MAX_INSTR_SIZE 6
 306
 307 /* Special register usage.  */
 308 #define S390_SP_REGNUM S390_R15_REGNUM
 309 #define S390_RETADDR_REGNUM S390_R14_REGNUM
 310 #define S390_FRAME_REGNUM S390_R11_REGNUM
 311
 312 /* Frame unwinding.  */
 313
 314 extern struct value *s390_trad_frame_prev_register
 315     (struct frame_info *this_frame, struct trad_frame_saved_reg saved_regs[],
 316      int regnum);
 317
 318 extern struct target_desc *tdesc_s390_linux32;
 319 extern struct target_desc *tdesc_s390x_linux64;
 320
 321 #endif /* S390_TDEP_H */