1 /* Target-dependent code for SPARC. 2 3 Copyright (C) 2003-2016 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 SPARC_TDEP_H 21 #define SPARC_TDEP_H 1 22 23 struct frame_info; 24 struct gdbarch; 25 struct regcache; 26 struct regset; 27 struct trad_frame_saved_reg; 28 29 /* Register offsets for the general-purpose register set. */ 30 31 struct sparc_gregmap 32 { 33 int r_psr_offset; 34 int r_pc_offset; 35 int r_npc_offset; 36 int r_y_offset; 37 int r_wim_offset; 38 int r_tbr_offset; 39 int r_g1_offset; 40 int r_l0_offset; 41 int r_y_size; 42 }; 43 44 struct sparc_fpregmap 45 { 46 int r_f0_offset; 47 int r_fsr_offset; 48 }; 49 50 /* SPARC architecture-specific information. */ 51 52 struct gdbarch_tdep 53 { 54 /* Register numbers for the PN and nPC registers. The definitions 55 for (64-bit) UltraSPARC differ from the (32-bit) SPARC 56 definitions. */ 57 int pc_regnum; 58 int npc_regnum; 59 60 /* Register sets. */ 61 const struct regset *gregset; 62 size_t sizeof_gregset; 63 const struct regset *fpregset; 64 size_t sizeof_fpregset; 65 66 /* Offset of saved PC in jmp_buf. */ 67 int jb_pc_offset; 68 69 /* Size of an Procedure Linkage Table (PLT) entry, 0 if we shouldn't 70 treat the PLT special when doing prologue analysis. */ 71 size_t plt_entry_size; 72 73 /* Alternative location for trap return. Used for single-stepping. */ 74 CORE_ADDR (*step_trap) (struct frame_info *frame, unsigned long insn); 75 76 /* ISA-specific data types. */ 77 struct type *sparc_psr_type; 78 struct type *sparc_fsr_type; 79 struct type *sparc64_pstate_type; 80 struct type *sparc64_fsr_type; 81 struct type *sparc64_fprs_type; 82 }; 83 84 /* Register numbers of various important registers. */ 85 86 enum sparc_regnum 87 { 88 SPARC_G0_REGNUM, /* %g0 */ 89 SPARC_G1_REGNUM, 90 SPARC_G2_REGNUM, 91 SPARC_G3_REGNUM, 92 SPARC_G4_REGNUM, 93 SPARC_G5_REGNUM, 94 SPARC_G6_REGNUM, 95 SPARC_G7_REGNUM, /* %g7 */ 96 SPARC_O0_REGNUM, /* %o0 */ 97 SPARC_O1_REGNUM, 98 SPARC_O2_REGNUM, 99 SPARC_O3_REGNUM, 100 SPARC_O4_REGNUM, 101 SPARC_O5_REGNUM, 102 SPARC_SP_REGNUM, /* %sp (%o6) */ 103 SPARC_O7_REGNUM, /* %o7 */ 104 SPARC_L0_REGNUM, /* %l0 */ 105 SPARC_L1_REGNUM, 106 SPARC_L2_REGNUM, 107 SPARC_L3_REGNUM, 108 SPARC_L4_REGNUM, 109 SPARC_L5_REGNUM, 110 SPARC_L6_REGNUM, 111 SPARC_L7_REGNUM, /* %l7 */ 112 SPARC_I0_REGNUM, /* %i0 */ 113 SPARC_I1_REGNUM, 114 SPARC_I2_REGNUM, 115 SPARC_I3_REGNUM, 116 SPARC_I4_REGNUM, 117 SPARC_I5_REGNUM, 118 SPARC_FP_REGNUM, /* %fp (%i6) */ 119 SPARC_I7_REGNUM, /* %i7 */ 120 SPARC_F0_REGNUM, /* %f0 */ 121 SPARC_F1_REGNUM, 122 SPARC_F2_REGNUM, 123 SPARC_F3_REGNUM, 124 SPARC_F4_REGNUM, 125 SPARC_F5_REGNUM, 126 SPARC_F6_REGNUM, 127 SPARC_F7_REGNUM, 128 SPARC_F31_REGNUM /* %f31 */ 129 = SPARC_F0_REGNUM + 31 130 }; 131 132 enum sparc32_regnum 133 { 134 SPARC32_Y_REGNUM /* %y */ 135 = SPARC_F31_REGNUM + 1, 136 SPARC32_PSR_REGNUM, /* %psr */ 137 SPARC32_WIM_REGNUM, /* %wim */ 138 SPARC32_TBR_REGNUM, /* %tbr */ 139 SPARC32_PC_REGNUM, /* %pc */ 140 SPARC32_NPC_REGNUM, /* %npc */ 141 SPARC32_FSR_REGNUM, /* %fsr */ 142 SPARC32_CSR_REGNUM, /* %csr */ 143 144 /* Pseudo registers. */ 145 SPARC32_D0_REGNUM, /* %d0 */ 146 SPARC32_D30_REGNUM /* %d30 */ 147 = SPARC32_D0_REGNUM + 15 148 }; 149 150 151 struct sparc_frame_cache 152 { 153 /* Base address. */ 154 CORE_ADDR base; 155 CORE_ADDR pc; 156 157 /* Do we have a frame? */ 158 int frameless_p; 159 160 /* The offset from the base register to the CFA. */ 161 int frame_offset; 162 163 /* Mask of `local' and `in' registers saved in the register save area. */ 164 unsigned short int saved_regs_mask; 165 166 /* Mask of `out' registers copied or renamed to their `in' sibling. */ 167 unsigned char copied_regs_mask; 168 169 /* Do we have a Structure, Union or Quad-Precision return value? */ 170 int struct_return_p; 171 172 /* Table of saved registers. */ 173 struct trad_frame_saved_reg *saved_regs; 174 }; 175 176 /* Fetch the instruction at PC. */ 177 extern unsigned long sparc_fetch_instruction (CORE_ADDR pc); 178 179 /* Fetch StackGhost Per-Process XOR cookie. */ 180 extern ULONGEST sparc_fetch_wcookie (struct gdbarch *gdbarch); 181 182 /* Record the effect of a SAVE instruction on CACHE. */ 183 extern void sparc_record_save_insn (struct sparc_frame_cache *cache); 184 185 /* Do a full analysis of the prologue at PC and update CACHE accordingly. */ 186 extern CORE_ADDR sparc_analyze_prologue (struct gdbarch *gdbarch, 187 CORE_ADDR pc, CORE_ADDR current_pc, 188 struct sparc_frame_cache *cache); 189 190 extern struct sparc_frame_cache * 191 sparc_frame_cache (struct frame_info *this_frame, void **this_cache); 192 193 extern struct sparc_frame_cache * 194 sparc32_frame_cache (struct frame_info *this_frame, void **this_cache); 195 196 extern int 197 sparc_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc); 198 199 200 201 extern void sparc_supply_rwindow (struct regcache *regcache, 202 CORE_ADDR sp, int regnum); 203 extern void sparc_collect_rwindow (const struct regcache *regcache, 204 CORE_ADDR sp, int regnum); 205 206 /* Register offsets for SunOS 4. */ 207 extern const struct sparc_gregmap sparc32_sunos4_gregmap; 208 extern const struct sparc_fpregmap sparc32_sunos4_fpregmap; 209 extern const struct sparc_fpregmap sparc32_bsd_fpregmap; 210 211 extern void sparc32_supply_gregset (const struct sparc_gregmap *gregmap, 212 struct regcache *regcache, 213 int regnum, const void *gregs); 214 extern void sparc32_collect_gregset (const struct sparc_gregmap *gregmap, 215 const struct regcache *regcache, 216 int regnum, void *gregs); 217 extern void sparc32_supply_fpregset (const struct sparc_fpregmap *fpregmap, 218 struct regcache *regcache, 219 int regnum, const void *fpregs); 220 extern void sparc32_collect_fpregset (const struct sparc_fpregmap *fpregmap, 221 const struct regcache *regcache, 222 int regnum, void *fpregs); 223 224 extern int sparc_is_annulled_branch_insn (CORE_ADDR pc); 225 226 /* Functions and variables exported from sparc-sol2-tdep.c. */ 227 228 /* Register offsets for Solaris 2. */ 229 extern const struct sparc_gregmap sparc32_sol2_gregmap; 230 extern const struct sparc_fpregmap sparc32_sol2_fpregmap; 231 232 extern int sparc_sol2_pc_in_sigtramp (CORE_ADDR pc, const char *name); 233 234 extern const char *sparc_sol2_static_transform_name (const char *name); 235 236 extern void sparc32_sol2_init_abi (struct gdbarch_info info, 237 struct gdbarch *gdbarch); 238 239 /* Functions and variables exported from sparcnbsd-tdep.c. */ 240 241 /* Register offsets for NetBSD. */ 242 extern const struct sparc_gregmap sparc32nbsd_gregmap; 243 244 /* Return the address of a system call's alternative return 245 address. */ 246 extern CORE_ADDR sparcnbsd_step_trap (struct frame_info *frame, 247 unsigned long insn); 248 249 extern void sparc32nbsd_elf_init_abi (struct gdbarch_info info, 250 struct gdbarch *gdbarch); 251 252 extern struct trad_frame_saved_reg * 253 sparc32nbsd_sigcontext_saved_regs (struct frame_info *next_frame); 254 255 #endif /* sparc-tdep.h */ 256