gdb/csky-tdep.h

   1 /* Target-dependent code for the CSKY architecture, for GDB.
   2
   3    Copyright (C) 2010-2024 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 CSKY_TDEP_H
  21 #define CSKY_TDEP_H
  22
  23 #include "gdbarch.h"
  24
  25 /* How to interpret the contents of the link register.  */
  26 enum lr_type_t
  27 {
  28   LR_TYPE_R15,
  29   LR_TYPE_EPC,
  30   LR_TYPE_FPC
  31 };
  32
  33 /* Target-dependent structure in gdbarch.  */
  34 struct csky_gdbarch_tdep : gdbarch_tdep_base
  35 {
  36   /* Save FPU, VDSP ABI.  */
  37   unsigned int fpu_abi;
  38   unsigned int fpu_hardfp;
  39   unsigned int vdsp_version;
  40
  41   /* Save fv_pseudo_registers_count.  */
  42   unsigned int has_vr0;
  43   unsigned int fv_pseudo_registers_count;
  44 };
  45
  46 /* Instruction sizes.  */
  47 enum csky_insn_size_t
  48 {
  49   CSKY_INSN_SIZE16 = 2,
  50   CSKY_INSN_SIZE32 = 4
  51 };
  52
  53 /* CSKY register numbers.  */
  54 enum csky_regnum
  55 {
  56   CSKY_R0_REGNUM = 0, /* General registers.  */
  57   CSKY_R15_REGNUM = 15,
  58   CSKY_HI_REGNUM = 36,
  59   CSKY_LO_REGNUM = 37,
  60   CSKY_PC_REGNUM = 72,
  61   CSKY_AR0_REGNUM = 73,
  62   CSKY_CR0_REGNUM = 89,
  63   CSKY_VBR_REGNUM = CSKY_CR0_REGNUM + 1,
  64   CSKY_EPSR_REGNUM = CSKY_CR0_REGNUM + 2,
  65   CSKY_FPSR_REGNUM = CSKY_CR0_REGNUM + 3,
  66   CSKY_EPC_REGNUM = CSKY_CR0_REGNUM + 4,
  67   CSKY_FPC_REGNUM = CSKY_CR0_REGNUM + 5,
  68
  69   /* Float register 0.  */
  70   CSKY_FR0_REGNUM = 40,
  71   CSKY_FR16_REGNUM = 1172,
  72   CSKY_FCR_REGNUM = 121,
  73   CSKY_MMU_REGNUM = 128,
  74   CSKY_PROFCR_REGNUM = 140,
  75   CSKY_PROFGR_REGNUM = 144,
  76   CSKY_FP_REGNUM = 8,
  77
  78   /* Vector register 0.  */
  79   CSKY_VR0_REGNUM = 56,
  80
  81   /* m32r calling convention.  */
  82   CSKY_SP_REGNUM = CSKY_R0_REGNUM + 14,
  83   CSKY_RET_REGNUM = CSKY_R0_REGNUM,
  84
  85   /* Argument registers.  */
  86   CSKY_ABI_A0_REGNUM = 0,
  87   CSKY_ABI_LAST_ARG_REGNUM = 3,
  88
  89   /* Link register, r15.  */
  90   CSKY_LR_REGNUM = CSKY_R15_REGNUM,
  91
  92   /* Processor status register, cr0.  */
  93   CSKY_PSR_REGNUM = CSKY_CR0_REGNUM,
  94
  95   CSKY_MAX_REGISTER_SIZE = 16,
  96
  97   /* Actually, the max regs number should be 1187. But if the
  98      gdb stub does not send a tdesc-xml file to gdb, 253 works. */
  99   CSKY_MAX_REGS = 253
 100 };
 101
 102 /* ICE registers.  */
 103 #define CSKY_CRBANK_NUM_REGS 32
 104
 105 /* Tdesc registers essential check.  */
 106 #define CSKY_TDESC_REGS_PC_NUMBERED             (1 << 0)
 107 #define CSKY_TDESC_REGS_SP_NUMBERED             (1 << 1)
 108 #define CSKY_TDESC_REGS_LR_NUMBERED             (1 << 2)
 109 #define CSKY_TDESC_REGS_ESSENTIAL_VALUE         (7)
 110
 111 /* For fr0~fr15, fr16~fr31, vr0~vr15 check.  */
 112 #define CSKY_FULL16_ONEHOT_VALUE   0xffff
 113
 114 /* Define for CSKY FV pseudo regs for dwarf regs. */
 115 #define FV_PSEUDO_REGNO_FIRST  74
 116 #define FV_PSEUDO_REGNO_LAST   201
 117
 118 /* Number of processor registers w/o ICE registers.  */
 119 #define CSKY_NUM_REGS (CSKY_MAX_REGS - CSKY_CRBANK_NUM_REGS)
 120
 121 /* size.  */
 122 #define CSKY_16_ST_SIZE(insn) (1 << ((insn & 0x1800) >> 11))
 123 /* rx.  */
 124 #define CSKY_16_ST_ADDR_REGNUM(insn) ((insn & 0x700) >> 8)
 125 /* disp.  */
 126 #define CSKY_16_ST_OFFSET(insn) ((insn & 0x1f) << ((insn & 0x1800) >> 11))
 127 /* ry.  */
 128 #define CSKY_16_ST_VAL_REGNUM(insn) ((insn & 0xe0) >> 5)
 129
 130 /* st16.w rz, (sp, disp).  */
 131 #define CSKY_16_IS_STWx0(insn) ((insn & 0xf800) == 0xb800)
 132 #define CSKY_16_STWx0_VAL_REGNUM(insn) CSKY_16_ST_ADDR_REGNUM (insn)
 133
 134 /* disp.  */
 135 #define CSKY_16_STWx0_OFFSET(insn) \
 136   ((((insn & 0x700) >> 3) + (insn & 0x1f)) << 2)
 137
 138 /* Check ld16 but not ld16 sp.  */
 139 #define CSKY_16_IS_LD(insn) \
 140   (((insn & 0xe000) == 0x8000) && (insn & 0x1800) != 0x1800)
 141 /* size.  */
 142 #define CSKY_16_LD_SIZE(insn) CSKY_16_ST_SIZE (insn)
 143 /* rx.  */
 144 #define CSKY_16_LD_ADDR_REGNUM(insn) CSKY_16_ST_ADDR_REGNUM (insn)
 145 /* disp.  */
 146 #define CSKY_16_LD_OFFSET(insn) CSKY_16_ST_OFFSET (insn)
 147
 148 /* ld16.w rz,(sp,disp).  */
 149 #define CSKY_16_IS_LDWx0(insn) ((insn & 0xf800) == 0x9800)
 150 /*disp.  */
 151 #define CSKY_16_LDWx0_OFFSET(insn) CSKY_16_STWx0_OFFSET (insn)
 152
 153 /* st32.b/h/w/d.  */
 154 #define CSKY_32_IS_ST(insn) ((insn & 0xfc00c000) == 0xdc000000)
 155
 156 /* size: b/h/w/d.  */
 157 #define CSKY_32_ST_SIZE(insn) (1 << ((insn & 0x3000) >> 12))
 158 /* rx.  */
 159 #define CSKY_32_ST_ADDR_REGNUM(insn) ((insn & 0x001f0000) >> 16)
 160 /* disp.  */
 161 #define CSKY_32_ST_OFFSET(insn) ((insn & 0xfff) << ((insn & 0x3000) >> 12))
 162 /* ry.  */
 163 #define CSKY_32_ST_VAL_REGNUM(insn) ((insn & 0x03e00000) >> 21)
 164
 165 /* stw ry, (sp, disp).  */
 166 #define CSKY_32_IS_STWx0(insn) ((insn & 0xfc1ff000) == 0xdc0e2000)
 167
 168 /* stm32 ry-rz, (rx).  */
 169 #define CSKY_32_IS_STM(insn) ((insn & 0xfc00ffe0) == 0xd4001c20)
 170 /* rx.  */
 171 #define CSKY_32_STM_ADDR_REGNUM(insn) CSKY_32_ST_ADDR_REGNUM (insn)
 172 /* Count of registers.  */
 173 #define CSKY_32_STM_SIZE(insn) (insn & 0x1f)
 174 /* ry.  */
 175 #define CSKY_32_STM_VAL_REGNUM(insn) ((insn & 0x03e00000) >> 21)
 176 /* stm32 ry-rz, (sp).  */
 177 #define CSKY_32_IS_STMx0(insn) ((insn & 0xfc1fffe0) == 0xd40e1c20)
 178
 179 /* str32.b/h/w rz, (rx, ry << offset).  */
 180 #define CSKY_32_IS_STR(insn) \
 181   (((insn & 0xfc000000) == 0xd4000000) && !(CSKY_32_IS_STM (insn)))
 182 /* rx.  */
 183 #define CSKY_32_STR_X_REGNUM(insn) CSKY_32_ST_ADDR_REGNUM (insn)
 184 /* ry.  */
 185 #define CSKY_32_STR_Y_REGNUM(insn) ((insn >> 21) & 0x1f)
 186 /* size: b/h/w.  */
 187 #define CSKY_32_STR_SIZE(insn) (1 << ((insn & 0x0c00) >> 10))
 188 /* imm (for rx + ry * imm).  */
 189 #define CSKY_32_STR_OFFSET(insn) ((insn & 0x000003e0) >> 5)
 190
 191 /* stex32.w rz, (rx, disp).  */
 192 #define CSKY_32_IS_STEX(insn) ((insn & 0xfc00f000) == 0xdc007000)
 193 /* rx.  */
 194 #define CSKY_32_STEX_ADDR_REGNUM(insn) ((insn & 0x1f0000) >> 16)
 195 /* disp.  */
 196 #define CSKY_32_STEX_OFFSET(insn) ((insn & 0x0fff) << 2)
 197
 198 /* ld.b/h/w.  */
 199 #define CSKY_32_IS_LD(insn) ((insn & 0xfc00c000) == 0xd8000000)
 200 /* size.  */
 201 #define CSKY_32_LD_SIZE(insn) CSKY_32_ST_SIZE (insn)
 202 /* rx.  */
 203 #define CSKY_32_LD_ADDR_REGNUM(insn) CSKY_32_ST_ADDR_REGNUM (insn)
 204 /* disp.  */
 205 #define CSKY_32_LD_OFFSET(insn) CSKY_32_ST_OFFSET (insn)
 206 #define CSKY_32_IS_LDM(insn) ((insn & 0xfc00ffe0) == 0xd0001c20)
 207 /* rx.  */
 208 #define CSKY_32_LDM_ADDR_REGNUM(insn) CSKY_32_STM_ADDR_REGNUM (insn)
 209 /* Count of registers.  */
 210 #define CSKY_32_LDM_SIZE(insn) CSKY_32_STM_SIZE (insn)
 211
 212 /* ldr32.b/h/w rz, (rx, ry << offset).  */
 213 #define CSKY_32_IS_LDR(insn) \
 214   (((insn & 0xfc00fe00) == 0xd0000000) && !(CSKY_32_IS_LDM (insn)))
 215 /* rx.  */
 216 #define CSKY_32_LDR_X_REGNUM(insn) CSKY_32_STR_X_REGNUM (insn)
 217 /* ry.  */
 218 #define CSKY_32_LDR_Y_REGNUM(insn) CSKY_32_STR_Y_REGNUM (insn)
 219 /* size: b/h/w.  */
 220 #define CSKY_32_LDR_SIZE(insn) CSKY_32_STR_SIZE (insn)
 221 /* imm (for rx + ry*imm).  */
 222 #define CSKY_32_LDR_OFFSET(insn) CSKY_32_STR_OFFSET (insn)
 223
 224 #define CSKY_32_IS_LDEX(insn) ((insn & 0xfc00f000) == 0xd8007000)
 225 /* rx.  */
 226 #define CSKY_32_LDEX_ADDR_REGNUM(insn) CSKY_32_STEX_ADDR_REGNUM (insn)
 227 /* disp.  */
 228 #define CSKY_32_LDEX_OFFSET(insn) CSKY_32_STEX_OFFSET (insn)
 229
 230 /* subi.sp sp, disp.  */
 231 #define CSKY_16_IS_SUBI0(insn) ((insn & 0xfce0) == 0x1420)
 232 /* disp.  */
 233 #define CSKY_16_SUBI_IMM(insn) ((((insn & 0x300) >> 3) + (insn & 0x1f)) << 2)
 234
 235 /* subi32 sp,sp,oimm12.  */
 236 #define CSKY_32_IS_SUBI0(insn) ((insn & 0xfffff000) == 0xe5ce1000)
 237 /* oimm12.  */
 238 #define CSKY_32_SUBI_IMM(insn) ((insn & 0xfff) + 1)
 239
 240 /* push16.  */
 241 #define CSKY_16_IS_PUSH(insn) ((insn & 0xffe0) == 0x14c0)
 242 #define CSKY_16_IS_PUSH_R15(insn) ((insn & 0x10) == 0x10)
 243 #define CSKY_16_PUSH_LIST1(insn) (insn & 0xf) /* r4 - r11.  */
 244
 245 /* pop16.  */
 246 #define CSKY_16_IS_POP(insn) ((insn & 0xffe0) == 0x1480)
 247 #define CSKY_16_IS_POP_R15(insn) CSKY_16_IS_PUSH_R15 (insn)
 248 #define CSKY_16_POP_LIST1(insn) CSKY_16_PUSH_LIST1 (insn) /* r4 - r11.  */
 249
 250 /* push32.  */
 251 #define CSKY_32_IS_PUSH(insn) ((insn & 0xfffffe00) == 0xebe00000)
 252 #define CSKY_32_IS_PUSH_R29(insn) ((insn & 0x100) == 0x100)
 253 #define CSKY_32_IS_PUSH_R15(insn) ((insn & 0x10) == 0x10)
 254 #define CSKY_32_PUSH_LIST1(insn) (insn & 0xf)    /* r4 - r11.  */
 255 #define CSKY_32_PUSH_LIST2(insn) ((insn & 0xe0) >> 5) /* r16 - r17.  */
 256
 257 /* pop32.  */
 258 #define CSKY_32_IS_POP(insn) ((insn & 0xfffffe00) == 0xebc00000)
 259 #define CSKY_32_IS_POP_R29(insn) CSKY_32_IS_PUSH_R29 (insn)
 260 #define CSKY_32_IS_POP_R15(insn) CSKY_32_IS_PUSH_R15 (insn)
 261 #define CSKY_32_POP_LIST1(insn) CSKY_32_PUSH_LIST1 (insn) /* r4 - r11.  */
 262 #define CSKY_32_POP_LIST2(insn) CSKY_32_PUSH_LIST2 (insn) /* r16 - r17.  */
 263
 264 /* Adjust sp by r4(l0).  */
 265 /* lrw r4, literal.  */
 266 #define CSKY_16_IS_LRW4(x) (((x) &0xfce0) == 0x1080)
 267 /* movi r4, imm8.  */
 268 #define CSKY_16_IS_MOVI4(x) (((x) &0xff00) == 0x3400)
 269
 270 /* addi r4, oimm8.  */
 271 #define CSKY_16_IS_ADDI4(x) (((x) &0xff00) == 0x2400)
 272 /* subi r4, oimm8.  */
 273 #define CSKY_16_IS_SUBI4(x) (((x) &0xff00) == 0x2c00)
 274
 275 /* nor16 r4, r4.  */
 276 #define CSKY_16_IS_NOR4(x) ((x) == 0x6d12)
 277
 278 /* lsli r4, r4, imm5.  */
 279 #define CSKY_16_IS_LSLI4(x) (((x) &0xffe0) == 0x4480)
 280 /* bseti r4, imm5.  */
 281 #define CSKY_16_IS_BSETI4(x) (((x) &0xffe0) == 0x3ca0)
 282 /* bclri r4, imm5.  */
 283 #define CSKY_16_IS_BCLRI4(x) (((x) &0xffe0) == 0x3c80)
 284
 285 /* subu sp, r4.  */
 286 #define CSKY_16_IS_SUBU4(x) ((x) == 0x6392)
 287
 288 #define CSKY_16_IS_R4_ADJUSTER(x) \
 289   (CSKY_16_IS_ADDI4 (x) || CSKY_16_IS_SUBI4 (x) || CSKY_16_IS_BSETI4 (x) \
 290    || CSKY_16_IS_BCLRI4 (x) || CSKY_16_IS_NOR4 (x) || CSKY_16_IS_LSLI4 (x))
 291
 292 /* lrw r4, literal.  */
 293 #define CSKY_32_IS_LRW4(x) (((x) &0xffff0000) == 0xea840000)
 294 /* movi r4, imm16.  */
 295 #define CSKY_32_IS_MOVI4(x) (((x) &0xffff0000) == 0xea040000)
 296 /* movih r4, imm16.  */
 297 #define CSKY_32_IS_MOVIH4(x) (((x) &0xffff0000) == 0xea240000)
 298 /* bmaski r4, oimm5.  */
 299 #define CSKY_32_IS_BMASKI4(x) (((x) &0xfc1fffff) == 0xc4005024)
 300 /* addi r4, r4, oimm12.  */
 301 #define CSKY_32_IS_ADDI4(x) (((x) &0xfffff000) == 0xe4840000)
 302 /* subi r4, r4, oimm12.  */
 303 #define CSKY_32_IS_SUBI4(x) (((x) &0xfffff000) == 0xe4810000)
 304
 305 /* nor32 r4, r4, r4.  */
 306 #define CSKY_32_IS_NOR4(x) ((x) == 0xc4842484)
 307 /* rotli r4, r4, imm5.  */
 308 #define CSKY_32_IS_ROTLI4(x) (((x) &0xfc1fffff) == 0xc4044904)
 309 /* lsli r4, r4, imm5.  */
 310 #define CSKY_32_IS_LISI4(x) (((x) &0xfc1fffff) == 0xc4044824)
 311 /* bseti32 r4, r4, imm5.  */
 312 #define CSKY_32_IS_BSETI4(x) (((x) &0xfc1fffff) == 0xc4042844)
 313 /* bclri32 r4, r4, imm5.  */
 314 #define CSKY_32_IS_BCLRI4(x) (((x) &0xfc1fffff) == 0xc4042824)
 315 /* ixh r4, r4, r4.  */
 316 #define CSKY_32_IS_IXH4(x) ((x) == 0xc4840824)
 317 /* ixw r4, r4, r4.  */
 318 #define CSKY_32_IS_IXW4(x) ((x) == 0xc4840844)
 319 /* subu32 sp, sp, r4.  */
 320 #define CSKY_32_IS_SUBU4(x) ((x) == 0xc48e008e)
 321
 322 #define CSKY_32_IS_R4_ADJUSTER(x) \
 323   (CSKY_32_IS_ADDI4 (x) || CSKY_32_IS_SUBI4 (x) || CSKY_32_IS_ROTLI4 (x) \
 324    || CSKY_32_IS_IXH4 (x) || CSKY_32_IS_IXW4 (x) || CSKY_32_IS_NOR4 (x) \
 325    || CSKY_32_IS_BSETI4 (x) || CSKY_32_IS_BCLRI4 (x) || CSKY_32_IS_LISI4 (x))
 326
 327 #define CSKY_IS_R4_ADJUSTER(x)                                          \
 328   (CSKY_32_IS_R4_ADJUSTER (x) || CSKY_16_IS_R4_ADJUSTER (x))
 329 #define CSKY_IS_SUBU4(x) (CSKY_32_IS_SUBU4 (x) || CSKY_16_IS_SUBU4 (x))
 330
 331 /* mfcr rz, epsr.  */
 332 #define CSKY_32_IS_MFCR_EPSR(insn) ((insn & 0xffffffe0) == 0xc0026020)
 333 /* mfcr rz, fpsr.  */
 334 #define CSKY_32_IS_MFCR_FPSR(insn) ((insn & 0xffffffe0) == 0xc0036020)
 335 /* mfcr rz, epc.  */
 336 #define CSKY_32_IS_MFCR_EPC(insn) ((insn & 0xffffffe0) == 0xc0046020)
 337 /* mfcr rz, fpc.  */
 338 #define CSKY_32_IS_MFCR_FPC(insn) ((insn & 0xffffffe0) == 0xc0056020)
 339
 340 #define CSKY_32_IS_RTE(insn) (insn == 0xc0004020)
 341 #define CSKY_32_IS_RFI(insn) (insn == 0xc0004420)
 342 #define CSKY_32_IS_JMP(insn) ((insn & 0xffe0ffff) == 0xe8c00000)
 343 #define CSKY_16_IS_JMP(insn) ((insn & 0xffc3) == 0x7800)
 344 #define CSKY_32_IS_JMPI(insn) ((insn & 0xffff0000) == 0xeac00000)
 345 #define CSKY_32_IS_JMPIX(insn) ((insn & 0xffe0fffc) == 0xe9e00000)
 346 #define CSKY_16_IS_JMPIX(insn) ((insn & 0xf8fc) == 0x38e0)
 347
 348 #define CSKY_16_IS_BR(insn) ((insn & 0xfc00) == 0x0400)
 349 #define CSKY_32_IS_BR(insn) ((insn & 0xffff0000) == 0xe8000000)
 350 #define CSKY_16_IS_MOV_FP_SP(insn) (insn == 0x6e3b)     /* mov r8, r14.  */
 351 #define CSKY_32_IS_MOV_FP_SP(insn) (insn == 0xc40e4828) /* mov r8, r14.  */
 352 #define CSKY_16_IS_MOV_SP_FP(insn) (insn == 0x6fa3)     /* mov r14, r8.  */
 353 #define CSKY_32_INSN_MASK 0xc000
 354 #define CSKY_BKPT_INSN 0x0
 355 #define CSKY_NUM_GREGS 32
 356 /* 32 general regs + 4.  */
 357 #define CSKY_NUM_GREGS_SAVED_GREGS (CSKY_NUM_GREGS + 4)
 358
 359 /* CSKY software bkpt write-mode.  */
 360 #define CSKY_WR_BKPT_MODE 4
 361
 362 /* Define insns for parse rt_sigframe.  */
 363 /* There are three words(sig, pinfo, puc) before siginfo.  */
 364 #define CSKY_SIGINFO_OFFSET 0xc
 365
 366 /* Size of struct siginfo.  */
 367 #define CSKY_SIGINFO_SIZE 0x80
 368
 369 /* There are five words(uc_flags, uc_link, and three for uc_stack)
 370    in struct ucontext before sigcontext.  */
 371 #define CSKY_UCONTEXT_SIGCONTEXT 0x14
 372
 373 /* There is a word(sc_mask) before sc_usp.  */
 374 #define CSKY_SIGCONTEXT_SC_USP 0x4
 375
 376 /* There is a word(sc_usp) before sc_a0.  */
 377 #define CSKY_SIGCONTEXT_SC_A0 0x4
 378
 379 #define CSKY_MOVI_R7_173 0x00adea07
 380 #define CSKY_TRAP_0 0x2020c000
 381
 382 /* Sizeof (tls) */
 383 #define CSKY_SIGCONTEXT_PT_REGS_TLS  4
 384
 385 /* Macro for kernel 4.x  */
 386 #define CSKY_MOVI_R7_139 0x008bea07
 387
 388 /* Macro for check long branch.  */
 389 #define CSKY_JMPI_PC_4      0x1eac0
 390 #define CSKY_LRW_T1_PC_8    0x2ea8d
 391 #define CSKY_JMP_T1_VS_NOP  0x6c037834
 392
 393 #endif