gdb/sparc-tdep.h

   1 /* Target-dependent code for SPARC.
   2
   3    Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009
   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
  72 /* Register numbers of various important registers.  */
  73
  74 enum sparc_regnum
  75 {
  76   SPARC_G0_REGNUM,              /* %g0 */
  77   SPARC_G1_REGNUM,
  78   SPARC_G2_REGNUM,
  79   SPARC_G3_REGNUM,
  80   SPARC_G4_REGNUM,
  81   SPARC_G5_REGNUM,
  82   SPARC_G6_REGNUM,
  83   SPARC_G7_REGNUM,              /* %g7 */
  84   SPARC_O0_REGNUM,              /* %o0 */
  85   SPARC_O1_REGNUM,
  86   SPARC_O2_REGNUM,
  87   SPARC_O3_REGNUM,
  88   SPARC_O4_REGNUM,
  89   SPARC_O5_REGNUM,
  90   SPARC_SP_REGNUM,              /* %sp (%o6) */
  91   SPARC_O7_REGNUM,              /* %o7 */
  92   SPARC_L0_REGNUM,              /* %l0 */
  93   SPARC_L1_REGNUM,
  94   SPARC_L2_REGNUM,
  95   SPARC_L3_REGNUM,
  96   SPARC_L4_REGNUM,
  97   SPARC_L5_REGNUM,
  98   SPARC_L6_REGNUM,
  99   SPARC_L7_REGNUM,              /* %l7 */
 100   SPARC_I0_REGNUM,              /* %i0 */
 101   SPARC_I1_REGNUM,
 102   SPARC_I2_REGNUM,
 103   SPARC_I3_REGNUM,
 104   SPARC_I4_REGNUM,
 105   SPARC_I5_REGNUM,
 106   SPARC_FP_REGNUM,              /* %fp (%i6) */
 107   SPARC_I7_REGNUM,              /* %i7 */
 108   SPARC_F0_REGNUM,              /* %f0 */
 109   SPARC_F1_REGNUM,
 110   SPARC_F31_REGNUM              /* %f31 */
 111   = SPARC_F0_REGNUM + 31
 112 };
 113
 114 enum sparc32_regnum
 115 {
 116   SPARC32_Y_REGNUM              /* %y */
 117   = SPARC_F31_REGNUM + 1,
 118   SPARC32_PSR_REGNUM,           /* %psr */
 119   SPARC32_WIM_REGNUM,           /* %wim */
 120   SPARC32_TBR_REGNUM,           /* %tbr */
 121   SPARC32_PC_REGNUM,            /* %pc */
 122   SPARC32_NPC_REGNUM,           /* %npc */
 123   SPARC32_FSR_REGNUM,           /* %fsr */
 124   SPARC32_CSR_REGNUM,           /* %csr */
 125
 126   /* Pseudo registers.  */
 127   SPARC32_D0_REGNUM,            /* %d0 */
 128   SPARC32_D30_REGNUM            /* %d30 */
 129   = SPARC32_D0_REGNUM + 15
 130 };
 131 \f
 132
 133 struct sparc_frame_cache
 134 {
 135   /* Base address.  */
 136   CORE_ADDR base;
 137   CORE_ADDR pc;
 138
 139   /* Do we have a frame?  */
 140   int frameless_p;
 141
 142   /* Do we have a Structure, Union or Quad-Precision return value?.  */
 143   int struct_return_p;
 144
 145   /* Table of saved registers.  */
 146   struct trad_frame_saved_reg *saved_regs;
 147 };
 148
 149 /* Fetch the instruction at PC.  */
 150 extern unsigned long sparc_fetch_instruction (CORE_ADDR pc);
 151
 152 /* Fetch StackGhost Per-Process XOR cookie.  */
 153 extern ULONGEST sparc_fetch_wcookie (void);
 154
 155 extern CORE_ADDR sparc_analyze_prologue (struct gdbarch *gdbarch,
 156                                          CORE_ADDR pc, CORE_ADDR current_pc,
 157                                          struct sparc_frame_cache *cache);
 158
 159 extern struct sparc_frame_cache *
 160   sparc_frame_cache (struct frame_info *this_frame, void **this_cache);
 161
 162 extern struct sparc_frame_cache *
 163   sparc32_frame_cache (struct frame_info *this_frame, void **this_cache);
 164
 165 \f
 166
 167 extern int sparc_software_single_step (struct frame_info *frame);
 168
 169 extern void sparc_supply_rwindow (struct regcache *regcache,
 170                                   CORE_ADDR sp, int regnum);
 171 extern void sparc_collect_rwindow (const struct regcache *regcache,
 172                                    CORE_ADDR sp, int regnum);
 173
 174 /* Register offsets for SunOS 4.  */
 175 extern const struct sparc_gregset sparc32_sunos4_gregset;
 176
 177 extern void sparc32_supply_gregset (const struct sparc_gregset *gregset,
 178                                     struct regcache *regcache,
 179                                     int regnum, const void *gregs);
 180 extern void sparc32_collect_gregset (const struct sparc_gregset *gregset,
 181                                      const struct regcache *regcache,
 182                                      int regnum, void *gregs);
 183 extern void sparc32_supply_fpregset (struct regcache *regcache,
 184                                      int regnum, const void *fpregs);
 185 extern void sparc32_collect_fpregset (const struct regcache *regcache,
 186                                       int regnum, void *fpregs);
 187
 188 /* Functions and variables exported from sparc-sol2-tdep.c.  */
 189
 190 /* Register offsets for Solaris 2.  */
 191 extern const struct sparc_gregset sparc32_sol2_gregset;
 192
 193 extern int sparc_sol2_pc_in_sigtramp (CORE_ADDR pc, char *name);
 194
 195 extern char *sparc_sol2_static_transform_name (char *name);
 196
 197 extern void sparc32_sol2_init_abi (struct gdbarch_info info,
 198                                    struct gdbarch *gdbarch);
 199
 200 /* Functions and variables exported from sparcnbsd-tdep.c.  */
 201
 202 /* Register offsets for NetBSD.  */
 203 extern const struct sparc_gregset sparc32nbsd_gregset;
 204
 205 /* Return the address of a system call's alternative return
 206    address.  */
 207 extern CORE_ADDR sparcnbsd_step_trap (struct frame_info *frame,
 208                                       unsigned long insn);
 209
 210 extern void sparc32nbsd_elf_init_abi (struct gdbarch_info info,
 211                                       struct gdbarch *gdbarch);
 212
 213 extern struct trad_frame_saved_reg *
 214   sparc32nbsd_sigcontext_saved_regs (struct frame_info *next_frame);
 215
 216 #endif /* sparc-tdep.h */