gdb/sparc-tdep.h

   1 /* Target-dependent code for SPARC.
   2
   3    Copyright (C) 2003-2014 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 \f
 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_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc);
 198
 199 \f
 200
 201 extern int sparc_software_single_step (struct frame_info *frame);
 202
 203 extern void sparc_supply_rwindow (struct regcache *regcache,
 204                                   CORE_ADDR sp, int regnum);
 205 extern void sparc_collect_rwindow (const struct regcache *regcache,
 206                                    CORE_ADDR sp, int regnum);
 207
 208 /* Register offsets for SunOS 4.  */
 209 extern const struct sparc_gregmap sparc32_sunos4_gregmap;
 210 extern const struct sparc_fpregmap sparc32_sunos4_fpregmap;
 211 extern const struct sparc_fpregmap sparc32_bsd_fpregmap;
 212
 213 extern void sparc32_supply_gregset (const struct sparc_gregmap *gregmap,
 214                                     struct regcache *regcache,
 215                                     int regnum, const void *gregs);
 216 extern void sparc32_collect_gregset (const struct sparc_gregmap *gregmap,
 217                                      const struct regcache *regcache,
 218                                      int regnum, void *gregs);
 219 extern void sparc32_supply_fpregset (const struct sparc_fpregmap *fpregmap,
 220                                      struct regcache *regcache,
 221                                      int regnum, const void *fpregs);
 222 extern void sparc32_collect_fpregset (const struct sparc_fpregmap *fpregmap,
 223                                       const struct regcache *regcache,
 224                                       int regnum, void *fpregs);
 225
 226 extern int sparc_is_annulled_branch_insn (CORE_ADDR pc);
 227
 228 /* Functions and variables exported from sparc-sol2-tdep.c.  */
 229
 230 /* Register offsets for Solaris 2.  */
 231 extern const struct sparc_gregmap sparc32_sol2_gregmap;
 232 extern const struct sparc_fpregmap sparc32_sol2_fpregmap;
 233
 234 extern int sparc_sol2_pc_in_sigtramp (CORE_ADDR pc, const char *name);
 235
 236 extern const char *sparc_sol2_static_transform_name (const char *name);
 237
 238 extern void sparc32_sol2_init_abi (struct gdbarch_info info,
 239                                    struct gdbarch *gdbarch);
 240
 241 /* Functions and variables exported from sparcnbsd-tdep.c.  */
 242
 243 /* Register offsets for NetBSD.  */
 244 extern const struct sparc_gregmap sparc32nbsd_gregmap;
 245
 246 /* Return the address of a system call's alternative return
 247    address.  */
 248 extern CORE_ADDR sparcnbsd_step_trap (struct frame_info *frame,
 249                                       unsigned long insn);
 250
 251 extern void sparc32nbsd_elf_init_abi (struct gdbarch_info info,
 252                                       struct gdbarch *gdbarch);
 253
 254 extern struct trad_frame_saved_reg *
 255   sparc32nbsd_sigcontext_saved_regs (struct frame_info *next_frame);
 256
 257 #endif /* sparc-tdep.h */