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 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_gregset
  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 /* SPARC architecture-specific information.  */
  45
  46 struct gdbarch_tdep
  47 {
  48   /* Register numbers for the PN and nPC registers.  The definitions
  49      for (64-bit) UltraSPARC differ from the (32-bit) SPARC
  50      definitions.  */
  51   int pc_regnum;
  52   int npc_regnum;
  53
  54   /* Register sets.  */
  55   struct regset *gregset;
  56   size_t sizeof_gregset;
  57   struct regset *fpregset;
  58   size_t sizeof_fpregset;
  59
  60   /* Offset of saved PC in jmp_buf.  */
  61   int jb_pc_offset;
  62
  63   /* Size of an Procedure Linkage Table (PLT) entry, 0 if we shouldn't
  64      treat the PLT special when doing prologue analysis.  */
  65   size_t plt_entry_size;
  66
  67   /* Alternative location for trap return.  Used for single-stepping.  */
  68   CORE_ADDR (*step_trap) (struct frame_info *frame, unsigned long insn);
  69 };
  70
  71 /* Register numbers of various important registers.  */
  72
  73 enum sparc_regnum
  74 {
  75   SPARC_G0_REGNUM,              /* %g0 */
  76   SPARC_G1_REGNUM,
  77   SPARC_G2_REGNUM,
  78   SPARC_G3_REGNUM,
  79   SPARC_G4_REGNUM,
  80   SPARC_G5_REGNUM,
  81   SPARC_G6_REGNUM,
  82   SPARC_G7_REGNUM,              /* %g7 */
  83   SPARC_O0_REGNUM,              /* %o0 */
  84   SPARC_O1_REGNUM,
  85   SPARC_O2_REGNUM,
  86   SPARC_O3_REGNUM,
  87   SPARC_O4_REGNUM,
  88   SPARC_O5_REGNUM,
  89   SPARC_SP_REGNUM,              /* %sp (%o6) */
  90   SPARC_O7_REGNUM,              /* %o7 */
  91   SPARC_L0_REGNUM,              /* %l0 */
  92   SPARC_L1_REGNUM,
  93   SPARC_L2_REGNUM,
  94   SPARC_L3_REGNUM,
  95   SPARC_L4_REGNUM,
  96   SPARC_L5_REGNUM,
  97   SPARC_L6_REGNUM,
  98   SPARC_L7_REGNUM,              /* %l7 */
  99   SPARC_I0_REGNUM,              /* %i0 */
 100   SPARC_I1_REGNUM,
 101   SPARC_I2_REGNUM,
 102   SPARC_I3_REGNUM,
 103   SPARC_I4_REGNUM,
 104   SPARC_I5_REGNUM,
 105   SPARC_FP_REGNUM,              /* %fp (%i6) */
 106   SPARC_I7_REGNUM,              /* %i7 */
 107   SPARC_F0_REGNUM,              /* %f0 */
 108   SPARC_F1_REGNUM,
 109   SPARC_F31_REGNUM              /* %f31 */
 110   = SPARC_F0_REGNUM + 31
 111 };
 112
 113 enum sparc32_regnum
 114 {
 115   SPARC32_Y_REGNUM              /* %y */
 116   = SPARC_F31_REGNUM + 1,
 117   SPARC32_PSR_REGNUM,           /* %psr */
 118   SPARC32_WIM_REGNUM,           /* %wim */
 119   SPARC32_TBR_REGNUM,           /* %tbr */
 120   SPARC32_PC_REGNUM,            /* %pc */
 121   SPARC32_NPC_REGNUM,           /* %npc */
 122   SPARC32_FSR_REGNUM,           /* %fsr */
 123   SPARC32_CSR_REGNUM,           /* %csr */
 124
 125   /* Pseudo registers.  */
 126   SPARC32_D0_REGNUM,            /* %d0 */
 127   SPARC32_D30_REGNUM            /* %d30 */
 128   = SPARC32_D0_REGNUM + 15
 129 };
 130 \f
 131
 132 struct sparc_frame_cache
 133 {
 134   /* Base address.  */
 135   CORE_ADDR base;
 136   CORE_ADDR pc;
 137
 138   /* Do we have a frame?  */
 139   int frameless_p;
 140
 141   /* Do we have a Structure, Union or Quad-Precision return value?.  */
 142   int struct_return_p;
 143
 144   /* Table of saved registers.  */
 145   struct trad_frame_saved_reg *saved_regs;
 146 };
 147
 148 /* Fetch the instruction at PC.  */
 149 extern unsigned long sparc_fetch_instruction (CORE_ADDR pc);
 150
 151 /* Fetch StackGhost Per-Process XOR cookie.  */
 152 extern ULONGEST sparc_fetch_wcookie (void);
 153
 154 extern CORE_ADDR sparc_analyze_prologue (CORE_ADDR pc, CORE_ADDR current_pc,
 155                                          struct sparc_frame_cache *cache);
 156
 157 extern struct sparc_frame_cache *
 158   sparc_frame_cache (struct frame_info *next_frame, void **this_cache);
 159
 160 extern struct sparc_frame_cache *
 161   sparc32_frame_cache (struct frame_info *next_frame, void **this_cache);
 162
 163 \f
 164
 165 extern int sparc_software_single_step (struct frame_info *frame);
 166
 167 extern void sparc_supply_rwindow (struct regcache *regcache,
 168                                   CORE_ADDR sp, int regnum);
 169 extern void sparc_collect_rwindow (const struct regcache *regcache,
 170                                    CORE_ADDR sp, int regnum);
 171
 172 /* Register offsets for SunOS 4.  */
 173 extern const struct sparc_gregset sparc32_sunos4_gregset;
 174
 175 extern void sparc32_supply_gregset (const struct sparc_gregset *gregset,
 176                                     struct regcache *regcache,
 177                                     int regnum, const void *gregs);
 178 extern void sparc32_collect_gregset (const struct sparc_gregset *gregset,
 179                                      const struct regcache *regcache,
 180                                      int regnum, void *gregs);
 181 extern void sparc32_supply_fpregset (struct regcache *regcache,
 182                                      int regnum, const void *fpregs);
 183 extern void sparc32_collect_fpregset (const struct regcache *regcache,
 184                                       int regnum, void *fpregs);
 185
 186 /* Functions and variables exported from sparc-sol2-tdep.c.  */
 187
 188 /* Register offsets for Solaris 2.  */
 189 extern const struct sparc_gregset sparc32_sol2_gregset;
 190
 191 extern int sparc_sol2_pc_in_sigtramp (CORE_ADDR pc, char *name);
 192
 193 extern void sparc32_sol2_init_abi (struct gdbarch_info info,
 194                                    struct gdbarch *gdbarch);
 195
 196 /* Functions and variables exported from sparcnbsd-tdep.c.  */
 197
 198 /* Register offsets for NetBSD.  */
 199 extern const struct sparc_gregset sparc32nbsd_gregset;
 200
 201 /* Return the address of a system call's alternative return
 202    address.  */
 203 extern CORE_ADDR sparcnbsd_step_trap (struct frame_info *frame,
 204                                       unsigned long insn);
 205
 206 extern void sparc32nbsd_elf_init_abi (struct gdbarch_info info,
 207                                       struct gdbarch *gdbarch);
 208
 209 extern struct trad_frame_saved_reg *
 210   sparc32nbsd_sigcontext_saved_regs (struct frame_info *next_frame);
 211
 212 #endif /* sparc-tdep.h */