gdb/sparc-tdep.h

   1 /* Target-dependent code for SPARC.
   2
   3    Copyright 2003, 2004 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 2 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, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #ifndef SPARC_TDEP_H
  23 #define SPARC_TDEP_H 1
  24
  25 struct gdbarch;
  26 struct regcache;
  27 struct regset;
  28 struct trad_frame_saved_reg;
  29 struct frame_info;
  30
  31 /* Register offsets for the general-purpose register set.  */
  32
  33 struct sparc_gregset
  34 {
  35   int r_psr_offset;
  36   int r_pc_offset;
  37   int r_npc_offset;
  38   int r_y_offset;
  39   int r_wim_offset;
  40   int r_tbr_offset;
  41   int r_g1_offset;
  42   int r_l0_offset;
  43   int r_y_size;
  44 };
  45
  46 /* SPARC architecture-specific information.  */
  47
  48 struct gdbarch_tdep
  49 {
  50   /* Register numbers for the PN and nPC registers.  The definitions
  51      for (64-bit) UltraSPARC differ from the (32-bit) SPARC
  52      definitions.  */
  53   int pc_regnum;
  54   int npc_regnum;
  55
  56   /* Register sets.  */
  57   struct regset *gregset;
  58   size_t sizeof_gregset;
  59   struct regset *fpregset;
  60   size_t sizeof_fpregset;
  61
  62   /* Offset of saved PC in jmp_buf.  */
  63   int jb_pc_offset;
  64
  65   /* Size of an Procedure Linkage Table (PLT) entry, 0 if we shouldn't
  66      treat the PLT special when doing prologue analysis.  */
  67   size_t plt_entry_size;
  68 };
  69
  70 /* Register numbers of various important registers.  */
  71
  72 enum sparc_regnum
  73 {
  74   SPARC_G0_REGNUM,              /* %g0 */
  75   SPARC_G1_REGNUM,
  76   SPARC_G2_REGNUM,
  77   SPARC_G3_REGNUM,
  78   SPARC_G4_REGNUM,
  79   SPARC_G5_REGNUM,
  80   SPARC_G6_REGNUM,
  81   SPARC_G7_REGNUM,              /* %g7 */
  82   SPARC_O0_REGNUM,              /* %o0 */
  83   SPARC_O1_REGNUM,
  84   SPARC_O2_REGNUM,
  85   SPARC_O3_REGNUM,
  86   SPARC_O4_REGNUM,
  87   SPARC_O5_REGNUM,
  88   SPARC_SP_REGNUM,              /* %sp (%o6) */
  89   SPARC_O7_REGNUM,              /* %o7 */
  90   SPARC_L0_REGNUM,              /* %l0 */
  91   SPARC_L1_REGNUM,
  92   SPARC_L2_REGNUM,
  93   SPARC_L3_REGNUM,
  94   SPARC_L4_REGNUM,
  95   SPARC_L5_REGNUM,
  96   SPARC_L6_REGNUM,
  97   SPARC_L7_REGNUM,              /* %l7 */
  98   SPARC_I0_REGNUM,              /* %i0 */
  99   SPARC_I1_REGNUM,
 100   SPARC_I2_REGNUM,
 101   SPARC_I3_REGNUM,
 102   SPARC_I4_REGNUM,
 103   SPARC_I5_REGNUM,
 104   SPARC_FP_REGNUM,              /* %fp (%i6) */
 105   SPARC_I7_REGNUM,              /* %i7 */
 106   SPARC_F0_REGNUM,              /* %f0 */
 107   SPARC_F1_REGNUM,
 108   SPARC_F31_REGNUM              /* %f31 */
 109   = SPARC_F0_REGNUM + 31
 110 };
 111
 112 enum sparc32_regnum
 113 {
 114   SPARC32_Y_REGNUM              /* %y */
 115   = SPARC_F31_REGNUM + 1,
 116   SPARC32_PSR_REGNUM,           /* %psr */
 117   SPARC32_WIM_REGNUM,           /* %wim */
 118   SPARC32_TBR_REGNUM,           /* %tbr */
 119   SPARC32_PC_REGNUM,            /* %pc */
 120   SPARC32_NPC_REGNUM,           /* %npc */
 121   SPARC32_FSR_REGNUM,           /* %fsr */
 122   SPARC32_CSR_REGNUM,           /* %csr */
 123
 124   /* Pseudo registers.  */
 125   SPARC32_D0_REGNUM,            /* %d0 */
 126   SPARC32_D30_REGNUM            /* %d30 */
 127   = SPARC32_D0_REGNUM + 15
 128 };
 129 \f
 130
 131 struct sparc_frame_cache
 132 {
 133   /* Base address.  */
 134   CORE_ADDR base;
 135   CORE_ADDR pc;
 136
 137   /* Do we have a frame?  */
 138   int frameless_p;
 139
 140   /* Do we have a Structure, Union or Quad-Precision return value?.  */
 141   int struct_return_p;
 142
 143   /* Table of saved registers.  */
 144   struct trad_frame_saved_reg *saved_regs;
 145 };
 146
 147 /* Fetch the instruction at PC.  */
 148 extern unsigned long sparc_fetch_instruction (CORE_ADDR pc);
 149
 150 extern CORE_ADDR sparc_analyze_prologue (CORE_ADDR pc, CORE_ADDR current_pc,
 151                                          struct sparc_frame_cache *cache);
 152
 153 extern struct sparc_frame_cache *
 154   sparc_frame_cache (struct frame_info *next_frame, void **this_cache);
 155
 156 extern struct sparc_frame_cache *
 157   sparc32_frame_cache (struct frame_info *next_frame, void **this_cache);
 158
 159 \f
 160
 161 extern void sparc_software_single_step (enum target_signal sig,
 162                                         int insert_breakpoints_p);
 163
 164 extern void sparc_supply_rwindow (struct regcache *regcache,
 165                                   CORE_ADDR sp, int regnum);
 166 extern void sparc_collect_rwindow (const struct regcache *regcache,
 167                                    CORE_ADDR sp, int regnum);
 168
 169 /* Register offsets for SunOS 4.  */
 170 extern const struct sparc_gregset sparc32_sunos4_gregset;
 171
 172 extern void sparc32_supply_gregset (const struct sparc_gregset *gregset,
 173                                     struct regcache *regcache,
 174                                     int regnum, const void *gregs);
 175 extern void sparc32_collect_gregset (const struct sparc_gregset *gregset,
 176                                      const struct regcache *regcache,
 177                                      int regnum, void *gregs);
 178 extern void sparc32_supply_fpregset (struct regcache *regcache,
 179                                      int regnum, const void *fpregs);
 180 extern void sparc32_collect_fpregset (const struct regcache *regcache,
 181                                       int regnum, void *fpregs);
 182
 183 /* Functions and variables exported from sparc-sol2-tdep.c.  */
 184
 185 /* Register offsets for Solaris 2.  */
 186 extern const struct sparc_gregset sparc32_sol2_gregset;
 187
 188 extern int sparc_sol2_pc_in_sigtramp (CORE_ADDR pc, char *name);
 189
 190 extern void sparc32_sol2_init_abi (struct gdbarch_info info,
 191                                    struct gdbarch *gdbarch);
 192
 193 /* Functions and variables exported from sparcnbsd-tdep.c.  */
 194
 195 /* Register offsets for NetBSD.  */
 196 extern const struct sparc_gregset sparc32nbsd_gregset;
 197
 198 #endif /* sparc-tdep.h */