gdb/sparc-tdep.h

   1 /* Target-dependent code for SPARC.
   2
   3    Copyright (C) 2003, 2004, 2006, 2007 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., 51 Franklin Street, Fifth Floor,
  20    Boston, MA 02110-1301, USA.  */
  21
  22 #ifndef SPARC_TDEP_H
  23 #define SPARC_TDEP_H 1
  24
  25 struct frame_info;
  26 struct gdbarch;
  27 struct regcache;
  28 struct regset;
  29 struct trad_frame_saved_reg;
  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   /* Alternative location for trap return.  Used for single-stepping.  */
  70   CORE_ADDR (*step_trap) (unsigned long insn);
  71 };
  72
  73 /* Register numbers of various important registers.  */
  74
  75 enum sparc_regnum
  76 {
  77   SPARC_G0_REGNUM,              /* %g0 */
  78   SPARC_G1_REGNUM,
  79   SPARC_G2_REGNUM,
  80   SPARC_G3_REGNUM,
  81   SPARC_G4_REGNUM,
  82   SPARC_G5_REGNUM,
  83   SPARC_G6_REGNUM,
  84   SPARC_G7_REGNUM,              /* %g7 */
  85   SPARC_O0_REGNUM,              /* %o0 */
  86   SPARC_O1_REGNUM,
  87   SPARC_O2_REGNUM,
  88   SPARC_O3_REGNUM,
  89   SPARC_O4_REGNUM,
  90   SPARC_O5_REGNUM,
  91   SPARC_SP_REGNUM,              /* %sp (%o6) */
  92   SPARC_O7_REGNUM,              /* %o7 */
  93   SPARC_L0_REGNUM,              /* %l0 */
  94   SPARC_L1_REGNUM,
  95   SPARC_L2_REGNUM,
  96   SPARC_L3_REGNUM,
  97   SPARC_L4_REGNUM,
  98   SPARC_L5_REGNUM,
  99   SPARC_L6_REGNUM,
 100   SPARC_L7_REGNUM,              /* %l7 */
 101   SPARC_I0_REGNUM,              /* %i0 */
 102   SPARC_I1_REGNUM,
 103   SPARC_I2_REGNUM,
 104   SPARC_I3_REGNUM,
 105   SPARC_I4_REGNUM,
 106   SPARC_I5_REGNUM,
 107   SPARC_FP_REGNUM,              /* %fp (%i6) */
 108   SPARC_I7_REGNUM,              /* %i7 */
 109   SPARC_F0_REGNUM,              /* %f0 */
 110   SPARC_F1_REGNUM,
 111   SPARC_F31_REGNUM              /* %f31 */
 112   = SPARC_F0_REGNUM + 31
 113 };
 114
 115 enum sparc32_regnum
 116 {
 117   SPARC32_Y_REGNUM              /* %y */
 118   = SPARC_F31_REGNUM + 1,
 119   SPARC32_PSR_REGNUM,           /* %psr */
 120   SPARC32_WIM_REGNUM,           /* %wim */
 121   SPARC32_TBR_REGNUM,           /* %tbr */
 122   SPARC32_PC_REGNUM,            /* %pc */
 123   SPARC32_NPC_REGNUM,           /* %npc */
 124   SPARC32_FSR_REGNUM,           /* %fsr */
 125   SPARC32_CSR_REGNUM,           /* %csr */
 126
 127   /* Pseudo registers.  */
 128   SPARC32_D0_REGNUM,            /* %d0 */
 129   SPARC32_D30_REGNUM            /* %d30 */
 130   = SPARC32_D0_REGNUM + 15
 131 };
 132 \f
 133
 134 struct sparc_frame_cache
 135 {
 136   /* Base address.  */
 137   CORE_ADDR base;
 138   CORE_ADDR pc;
 139
 140   /* Do we have a frame?  */
 141   int frameless_p;
 142
 143   /* Do we have a Structure, Union or Quad-Precision return value?.  */
 144   int struct_return_p;
 145
 146   /* Table of saved registers.  */
 147   struct trad_frame_saved_reg *saved_regs;
 148 };
 149
 150 /* Fetch the instruction at PC.  */
 151 extern unsigned long sparc_fetch_instruction (CORE_ADDR pc);
 152
 153 /* Return the contents if register REGNUM as an address.  */
 154 extern CORE_ADDR sparc_address_from_register (int regnum);
 155
 156 /* Fetch StackGhost Per-Process XOR cookie.  */
 157 extern ULONGEST sparc_fetch_wcookie (void);
 158
 159 extern CORE_ADDR sparc_analyze_prologue (CORE_ADDR pc, CORE_ADDR current_pc,
 160                                          struct sparc_frame_cache *cache);
 161
 162 extern struct sparc_frame_cache *
 163   sparc_frame_cache (struct frame_info *next_frame, void **this_cache);
 164
 165 extern struct sparc_frame_cache *
 166   sparc32_frame_cache (struct frame_info *next_frame, void **this_cache);
 167
 168 \f
 169
 170 extern void sparc_software_single_step (enum target_signal sig,
 171                                         int insert_breakpoints_p);
 172
 173 extern void sparc_supply_rwindow (struct regcache *regcache,
 174                                   CORE_ADDR sp, int regnum);
 175 extern void sparc_collect_rwindow (const struct regcache *regcache,
 176                                    CORE_ADDR sp, int regnum);
 177
 178 /* Register offsets for SunOS 4.  */
 179 extern const struct sparc_gregset sparc32_sunos4_gregset;
 180
 181 extern void sparc32_supply_gregset (const struct sparc_gregset *gregset,
 182                                     struct regcache *regcache,
 183                                     int regnum, const void *gregs);
 184 extern void sparc32_collect_gregset (const struct sparc_gregset *gregset,
 185                                      const struct regcache *regcache,
 186                                      int regnum, void *gregs);
 187 extern void sparc32_supply_fpregset (struct regcache *regcache,
 188                                      int regnum, const void *fpregs);
 189 extern void sparc32_collect_fpregset (const struct regcache *regcache,
 190                                       int regnum, void *fpregs);
 191
 192 /* Functions and variables exported from sparc-sol2-tdep.c.  */
 193
 194 /* Register offsets for Solaris 2.  */
 195 extern const struct sparc_gregset sparc32_sol2_gregset;
 196
 197 extern int sparc_sol2_pc_in_sigtramp (CORE_ADDR pc, char *name);
 198
 199 extern void sparc32_sol2_init_abi (struct gdbarch_info info,
 200                                    struct gdbarch *gdbarch);
 201
 202 /* Functions and variables exported from sparcnbsd-tdep.c.  */
 203
 204 /* Register offsets for NetBSD.  */
 205 extern const struct sparc_gregset sparc32nbsd_gregset;
 206
 207 /* Return the address of a system call's alternative return
 208    address.  */
 209 extern CORE_ADDR sparcnbsd_step_trap (unsigned long insn);
 210
 211 extern void sparc32nbsd_elf_init_abi (struct gdbarch_info info,
 212                                       struct gdbarch *gdbarch);
 213
 214 extern struct trad_frame_saved_reg *
 215   sparc32nbsd_sigcontext_saved_regs (struct frame_info *next_frame);
 216
 217 #endif /* sparc-tdep.h */