1 /* Target-dependent code for SPARC. 2 3 Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 4 Free Software Foundation, Inc. 5 6 This file is part of GDB. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 20 21 #ifndef SPARC_TDEP_H 22 #define SPARC_TDEP_H 1 23 24 struct frame_info; 25 struct gdbarch; 26 struct regcache; 27 struct regset; 28 struct trad_frame_saved_reg; 29 30 /* Register offsets for the general-purpose register set. */ 31 32 struct sparc_gregset 33 { 34 int r_psr_offset; 35 int r_pc_offset; 36 int r_npc_offset; 37 int r_y_offset; 38 int r_wim_offset; 39 int r_tbr_offset; 40 int r_g1_offset; 41 int r_l0_offset; 42 int r_y_size; 43 }; 44 45 /* SPARC architecture-specific information. */ 46 47 struct gdbarch_tdep 48 { 49 /* Register numbers for the PN and nPC registers. The definitions 50 for (64-bit) UltraSPARC differ from the (32-bit) SPARC 51 definitions. */ 52 int pc_regnum; 53 int npc_regnum; 54 55 /* Register sets. */ 56 struct regset *gregset; 57 size_t sizeof_gregset; 58 struct regset *fpregset; 59 size_t sizeof_fpregset; 60 61 /* Offset of saved PC in jmp_buf. */ 62 int jb_pc_offset; 63 64 /* Size of an Procedure Linkage Table (PLT) entry, 0 if we shouldn't 65 treat the PLT special when doing prologue analysis. */ 66 size_t plt_entry_size; 67 68 /* Alternative location for trap return. Used for single-stepping. */ 69 CORE_ADDR (*step_trap) (struct frame_info *frame, unsigned long insn); 70 71 /* ISA-specific data types. */ 72 struct type *sparc_psr_type; 73 struct type *sparc_fsr_type; 74 struct type *sparc64_pstate_type; 75 struct type *sparc64_fsr_type; 76 struct type *sparc64_fprs_type; 77 }; 78 79 /* Register numbers of various important registers. */ 80 81 enum sparc_regnum 82 { 83 SPARC_G0_REGNUM, /* %g0 */ 84 SPARC_G1_REGNUM, 85 SPARC_G2_REGNUM, 86 SPARC_G3_REGNUM, 87 SPARC_G4_REGNUM, 88 SPARC_G5_REGNUM, 89 SPARC_G6_REGNUM, 90 SPARC_G7_REGNUM, /* %g7 */ 91 SPARC_O0_REGNUM, /* %o0 */ 92 SPARC_O1_REGNUM, 93 SPARC_O2_REGNUM, 94 SPARC_O3_REGNUM, 95 SPARC_O4_REGNUM, 96 SPARC_O5_REGNUM, 97 SPARC_SP_REGNUM, /* %sp (%o6) */ 98 SPARC_O7_REGNUM, /* %o7 */ 99 SPARC_L0_REGNUM, /* %l0 */ 100 SPARC_L1_REGNUM, 101 SPARC_L2_REGNUM, 102 SPARC_L3_REGNUM, 103 SPARC_L4_REGNUM, 104 SPARC_L5_REGNUM, 105 SPARC_L6_REGNUM, 106 SPARC_L7_REGNUM, /* %l7 */ 107 SPARC_I0_REGNUM, /* %i0 */ 108 SPARC_I1_REGNUM, 109 SPARC_I2_REGNUM, 110 SPARC_I3_REGNUM, 111 SPARC_I4_REGNUM, 112 SPARC_I5_REGNUM, 113 SPARC_FP_REGNUM, /* %fp (%i6) */ 114 SPARC_I7_REGNUM, /* %i7 */ 115 SPARC_F0_REGNUM, /* %f0 */ 116 SPARC_F1_REGNUM, 117 SPARC_F31_REGNUM /* %f31 */ 118 = SPARC_F0_REGNUM + 31 119 }; 120 121 enum sparc32_regnum 122 { 123 SPARC32_Y_REGNUM /* %y */ 124 = SPARC_F31_REGNUM + 1, 125 SPARC32_PSR_REGNUM, /* %psr */ 126 SPARC32_WIM_REGNUM, /* %wim */ 127 SPARC32_TBR_REGNUM, /* %tbr */ 128 SPARC32_PC_REGNUM, /* %pc */ 129 SPARC32_NPC_REGNUM, /* %npc */ 130 SPARC32_FSR_REGNUM, /* %fsr */ 131 SPARC32_CSR_REGNUM, /* %csr */ 132 133 /* Pseudo registers. */ 134 SPARC32_D0_REGNUM, /* %d0 */ 135 SPARC32_D30_REGNUM /* %d30 */ 136 = SPARC32_D0_REGNUM + 15 137 }; 138 139 140 struct sparc_frame_cache 141 { 142 /* Base address. */ 143 CORE_ADDR base; 144 CORE_ADDR pc; 145 146 /* Do we have a frame? */ 147 int frameless_p; 148 149 /* Do we have a Structure, Union or Quad-Precision return value? */ 150 int struct_return_p; 151 152 /* Table of saved registers. */ 153 struct trad_frame_saved_reg *saved_regs; 154 }; 155 156 /* Fetch the instruction at PC. */ 157 extern unsigned long sparc_fetch_instruction (CORE_ADDR pc); 158 159 /* Fetch StackGhost Per-Process XOR cookie. */ 160 extern ULONGEST sparc_fetch_wcookie (struct gdbarch *gdbarch); 161 162 extern CORE_ADDR sparc_analyze_prologue (struct gdbarch *gdbarch, 163 CORE_ADDR pc, CORE_ADDR current_pc, 164 struct sparc_frame_cache *cache); 165 166 extern struct sparc_frame_cache * 167 sparc_frame_cache (struct frame_info *this_frame, void **this_cache); 168 169 extern struct sparc_frame_cache * 170 sparc32_frame_cache (struct frame_info *this_frame, void **this_cache); 171 172 173 174 extern int sparc_software_single_step (struct frame_info *frame); 175 176 extern void sparc_supply_rwindow (struct regcache *regcache, 177 CORE_ADDR sp, int regnum); 178 extern void sparc_collect_rwindow (const struct regcache *regcache, 179 CORE_ADDR sp, int regnum); 180 181 /* Register offsets for SunOS 4. */ 182 extern const struct sparc_gregset sparc32_sunos4_gregset; 183 184 extern void sparc32_supply_gregset (const struct sparc_gregset *gregset, 185 struct regcache *regcache, 186 int regnum, const void *gregs); 187 extern void sparc32_collect_gregset (const struct sparc_gregset *gregset, 188 const struct regcache *regcache, 189 int regnum, void *gregs); 190 extern void sparc32_supply_fpregset (struct regcache *regcache, 191 int regnum, const void *fpregs); 192 extern void sparc32_collect_fpregset (const struct regcache *regcache, 193 int regnum, void *fpregs); 194 195 /* Functions and variables exported from sparc-sol2-tdep.c. */ 196 197 /* Register offsets for Solaris 2. */ 198 extern const struct sparc_gregset sparc32_sol2_gregset; 199 200 extern int sparc_sol2_pc_in_sigtramp (CORE_ADDR pc, char *name); 201 202 extern char *sparc_sol2_static_transform_name (char *name); 203 204 extern void sparc32_sol2_init_abi (struct gdbarch_info info, 205 struct gdbarch *gdbarch); 206 207 /* Functions and variables exported from sparcnbsd-tdep.c. */ 208 209 /* Register offsets for NetBSD. */ 210 extern const struct sparc_gregset sparc32nbsd_gregset; 211 212 /* Return the address of a system call's alternative return 213 address. */ 214 extern CORE_ADDR sparcnbsd_step_trap (struct frame_info *frame, 215 unsigned long insn); 216 217 extern void sparc32nbsd_elf_init_abi (struct gdbarch_info info, 218 struct gdbarch *gdbarch); 219 220 extern struct trad_frame_saved_reg * 221 sparc32nbsd_sigcontext_saved_regs (struct frame_info *next_frame); 222 223 #endif /* sparc-tdep.h */ 224