gdb/sparc-tdep.h

   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_F2_REGNUM,
 118   SPARC_F3_REGNUM,
 119   SPARC_F4_REGNUM,
 120   SPARC_F5_REGNUM,
 121   SPARC_F6_REGNUM,
 122   SPARC_F7_REGNUM,
 123   SPARC_F31_REGNUM              /* %f31 */
 124   = SPARC_F0_REGNUM + 31
 125 };
 126
 127 enum sparc32_regnum
 128 {
 129   SPARC32_Y_REGNUM              /* %y */
 130   = SPARC_F31_REGNUM + 1,
 131   SPARC32_PSR_REGNUM,           /* %psr */
 132   SPARC32_WIM_REGNUM,           /* %wim */
 133   SPARC32_TBR_REGNUM,           /* %tbr */
 134   SPARC32_PC_REGNUM,            /* %pc */
 135   SPARC32_NPC_REGNUM,           /* %npc */
 136   SPARC32_FSR_REGNUM,           /* %fsr */
 137   SPARC32_CSR_REGNUM,           /* %csr */
 138
 139   /* Pseudo registers.  */
 140   SPARC32_D0_REGNUM,            /* %d0 */
 141   SPARC32_D30_REGNUM            /* %d30 */
 142   = SPARC32_D0_REGNUM + 15
 143 };
 144 \f
 145
 146 struct sparc_frame_cache
 147 {
 148   /* Base address.  */
 149   CORE_ADDR base;
 150   CORE_ADDR pc;
 151
 152   /* Do we have a frame?  */
 153   int frameless_p;
 154
 155   /* The offset from the base register to the CFA.  */
 156   int frame_offset;
 157
 158   /* Mask of `local' and `in' registers saved in the register save area.  */
 159   unsigned short int saved_regs_mask;
 160
 161   /* Mask of `out' registers copied or renamed to their `in' sibling.  */
 162   unsigned char copied_regs_mask;
 163
 164   /* Do we have a Structure, Union or Quad-Precision return value?  */
 165   int struct_return_p;
 166
 167   /* Table of saved registers.  */
 168   struct trad_frame_saved_reg *saved_regs;
 169 };
 170
 171 /* Fetch the instruction at PC.  */
 172 extern unsigned long sparc_fetch_instruction (CORE_ADDR pc);
 173
 174 /* Fetch StackGhost Per-Process XOR cookie.  */
 175 extern ULONGEST sparc_fetch_wcookie (struct gdbarch *gdbarch);
 176
 177 /* Record the effect of a SAVE instruction on CACHE.  */
 178 extern void sparc_record_save_insn (struct sparc_frame_cache *cache);
 179
 180 /* Do a full analysis of the prologue at PC and update CACHE accordingly.  */
 181 extern CORE_ADDR sparc_analyze_prologue (struct gdbarch *gdbarch,
 182                                          CORE_ADDR pc, CORE_ADDR current_pc,
 183                                          struct sparc_frame_cache *cache);
 184
 185 extern struct sparc_frame_cache *
 186   sparc_frame_cache (struct frame_info *this_frame, void **this_cache);
 187
 188 extern struct sparc_frame_cache *
 189   sparc32_frame_cache (struct frame_info *this_frame, void **this_cache);
 190
 191 \f
 192
 193 extern int sparc_software_single_step (struct frame_info *frame);
 194
 195 extern void sparc_supply_rwindow (struct regcache *regcache,
 196                                   CORE_ADDR sp, int regnum);
 197 extern void sparc_collect_rwindow (const struct regcache *regcache,
 198                                    CORE_ADDR sp, int regnum);
 199
 200 /* Register offsets for SunOS 4.  */
 201 extern const struct sparc_gregset sparc32_sunos4_gregset;
 202
 203 extern void sparc32_supply_gregset (const struct sparc_gregset *gregset,
 204                                     struct regcache *regcache,
 205                                     int regnum, const void *gregs);
 206 extern void sparc32_collect_gregset (const struct sparc_gregset *gregset,
 207                                      const struct regcache *regcache,
 208                                      int regnum, void *gregs);
 209 extern void sparc32_supply_fpregset (struct regcache *regcache,
 210                                      int regnum, const void *fpregs);
 211 extern void sparc32_collect_fpregset (const struct regcache *regcache,
 212                                       int regnum, void *fpregs);
 213
 214 /* Functions and variables exported from sparc-sol2-tdep.c.  */
 215
 216 /* Register offsets for Solaris 2.  */
 217 extern const struct sparc_gregset sparc32_sol2_gregset;
 218
 219 extern int sparc_sol2_pc_in_sigtramp (CORE_ADDR pc, char *name);
 220
 221 extern char *sparc_sol2_static_transform_name (char *name);
 222
 223 extern void sparc32_sol2_init_abi (struct gdbarch_info info,
 224                                    struct gdbarch *gdbarch);
 225
 226 /* Functions and variables exported from sparcnbsd-tdep.c.  */
 227
 228 /* Register offsets for NetBSD.  */
 229 extern const struct sparc_gregset sparc32nbsd_gregset;
 230
 231 /* Return the address of a system call's alternative return
 232    address.  */
 233 extern CORE_ADDR sparcnbsd_step_trap (struct frame_info *frame,
 234                                       unsigned long insn);
 235
 236 extern void sparc32nbsd_elf_init_abi (struct gdbarch_info info,
 237                                       struct gdbarch *gdbarch);
 238
 239 extern struct trad_frame_saved_reg *
 240   sparc32nbsd_sigcontext_saved_regs (struct frame_info *next_frame);
 241
 242 #endif /* sparc-tdep.h */