gdb/sparc-tdep.h

   1 /* Target-dependent code for SPARC.
   2
   3    Copyright (C) 2003-2004, 2006-2012 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   /* ISA-specific data types.  */
  71   struct type *sparc_psr_type;
  72   struct type *sparc_fsr_type;
  73   struct type *sparc64_pstate_type;
  74   struct type *sparc64_fsr_type;
  75   struct type *sparc64_fprs_type;
  76 };
  77
  78 /* Register numbers of various important registers.  */
  79
  80 enum sparc_regnum
  81 {
  82   SPARC_G0_REGNUM,              /* %g0 */
  83   SPARC_G1_REGNUM,
  84   SPARC_G2_REGNUM,
  85   SPARC_G3_REGNUM,
  86   SPARC_G4_REGNUM,
  87   SPARC_G5_REGNUM,
  88   SPARC_G6_REGNUM,
  89   SPARC_G7_REGNUM,              /* %g7 */
  90   SPARC_O0_REGNUM,              /* %o0 */
  91   SPARC_O1_REGNUM,
  92   SPARC_O2_REGNUM,
  93   SPARC_O3_REGNUM,
  94   SPARC_O4_REGNUM,
  95   SPARC_O5_REGNUM,
  96   SPARC_SP_REGNUM,              /* %sp (%o6) */
  97   SPARC_O7_REGNUM,              /* %o7 */
  98   SPARC_L0_REGNUM,              /* %l0 */
  99   SPARC_L1_REGNUM,
 100   SPARC_L2_REGNUM,
 101   SPARC_L3_REGNUM,
 102   SPARC_L4_REGNUM,
 103   SPARC_L5_REGNUM,
 104   SPARC_L6_REGNUM,
 105   SPARC_L7_REGNUM,              /* %l7 */
 106   SPARC_I0_REGNUM,              /* %i0 */
 107   SPARC_I1_REGNUM,
 108   SPARC_I2_REGNUM,
 109   SPARC_I3_REGNUM,
 110   SPARC_I4_REGNUM,
 111   SPARC_I5_REGNUM,
 112   SPARC_FP_REGNUM,              /* %fp (%i6) */
 113   SPARC_I7_REGNUM,              /* %i7 */
 114   SPARC_F0_REGNUM,              /* %f0 */
 115   SPARC_F1_REGNUM,
 116   SPARC_F2_REGNUM,
 117   SPARC_F3_REGNUM,
 118   SPARC_F4_REGNUM,
 119   SPARC_F5_REGNUM,
 120   SPARC_F6_REGNUM,
 121   SPARC_F7_REGNUM,
 122   SPARC_F31_REGNUM              /* %f31 */
 123   = SPARC_F0_REGNUM + 31
 124 };
 125
 126 enum sparc32_regnum
 127 {
 128   SPARC32_Y_REGNUM              /* %y */
 129   = SPARC_F31_REGNUM + 1,
 130   SPARC32_PSR_REGNUM,           /* %psr */
 131   SPARC32_WIM_REGNUM,           /* %wim */
 132   SPARC32_TBR_REGNUM,           /* %tbr */
 133   SPARC32_PC_REGNUM,            /* %pc */
 134   SPARC32_NPC_REGNUM,           /* %npc */
 135   SPARC32_FSR_REGNUM,           /* %fsr */
 136   SPARC32_CSR_REGNUM,           /* %csr */
 137
 138   /* Pseudo registers.  */
 139   SPARC32_D0_REGNUM,            /* %d0 */
 140   SPARC32_D30_REGNUM            /* %d30 */
 141   = SPARC32_D0_REGNUM + 15
 142 };
 143 \f
 144
 145 struct sparc_frame_cache
 146 {
 147   /* Base address.  */
 148   CORE_ADDR base;
 149   CORE_ADDR pc;
 150
 151   /* Do we have a frame?  */
 152   int frameless_p;
 153
 154   /* The offset from the base register to the CFA.  */
 155   int frame_offset;
 156
 157   /* Mask of `local' and `in' registers saved in the register save area.  */
 158   unsigned short int saved_regs_mask;
 159
 160   /* Mask of `out' registers copied or renamed to their `in' sibling.  */
 161   unsigned char copied_regs_mask;
 162
 163   /* Do we have a Structure, Union or Quad-Precision return value?  */
 164   int struct_return_p;
 165
 166   /* Table of saved registers.  */
 167   struct trad_frame_saved_reg *saved_regs;
 168 };
 169
 170 /* Fetch the instruction at PC.  */
 171 extern unsigned long sparc_fetch_instruction (CORE_ADDR pc);
 172
 173 /* Fetch StackGhost Per-Process XOR cookie.  */
 174 extern ULONGEST sparc_fetch_wcookie (struct gdbarch *gdbarch);
 175
 176 /* Record the effect of a SAVE instruction on CACHE.  */
 177 extern void sparc_record_save_insn (struct sparc_frame_cache *cache);
 178
 179 /* Do a full analysis of the prologue at PC and update CACHE accordingly.  */
 180 extern CORE_ADDR sparc_analyze_prologue (struct gdbarch *gdbarch,
 181                                          CORE_ADDR pc, CORE_ADDR current_pc,
 182                                          struct sparc_frame_cache *cache);
 183
 184 extern struct sparc_frame_cache *
 185   sparc_frame_cache (struct frame_info *this_frame, void **this_cache);
 186
 187 extern struct sparc_frame_cache *
 188   sparc32_frame_cache (struct frame_info *this_frame, void **this_cache);
 189
 190 \f
 191
 192 extern int sparc_software_single_step (struct frame_info *frame);
 193
 194 extern void sparc_supply_rwindow (struct regcache *regcache,
 195                                   CORE_ADDR sp, int regnum);
 196 extern void sparc_collect_rwindow (const struct regcache *regcache,
 197                                    CORE_ADDR sp, int regnum);
 198
 199 /* Register offsets for SunOS 4.  */
 200 extern const struct sparc_gregset sparc32_sunos4_gregset;
 201
 202 extern void sparc32_supply_gregset (const struct sparc_gregset *gregset,
 203                                     struct regcache *regcache,
 204                                     int regnum, const void *gregs);
 205 extern void sparc32_collect_gregset (const struct sparc_gregset *gregset,
 206                                      const struct regcache *regcache,
 207                                      int regnum, void *gregs);
 208 extern void sparc32_supply_fpregset (struct regcache *regcache,
 209                                      int regnum, const void *fpregs);
 210 extern void sparc32_collect_fpregset (const struct regcache *regcache,
 211                                       int regnum, void *fpregs);
 212
 213 /* Functions and variables exported from sparc-sol2-tdep.c.  */
 214
 215 /* Register offsets for Solaris 2.  */
 216 extern const struct sparc_gregset sparc32_sol2_gregset;
 217
 218 extern int sparc_sol2_pc_in_sigtramp (CORE_ADDR pc, const char *name);
 219
 220 extern const char *sparc_sol2_static_transform_name (const char *name);
 221
 222 extern void sparc32_sol2_init_abi (struct gdbarch_info info,
 223                                    struct gdbarch *gdbarch);
 224
 225 /* Functions and variables exported from sparcnbsd-tdep.c.  */
 226
 227 /* Register offsets for NetBSD.  */
 228 extern const struct sparc_gregset sparc32nbsd_gregset;
 229
 230 /* Return the address of a system call's alternative return
 231    address.  */
 232 extern CORE_ADDR sparcnbsd_step_trap (struct frame_info *frame,
 233                                       unsigned long insn);
 234
 235 extern void sparc32nbsd_elf_init_abi (struct gdbarch_info info,
 236                                       struct gdbarch *gdbarch);
 237
 238 extern struct trad_frame_saved_reg *
 239   sparc32nbsd_sigcontext_saved_regs (struct frame_info *next_frame);
 240
 241 #endif /* sparc-tdep.h */