gdb/ppc-tdep.h

   1 /* Target-dependent code for GDB, the GNU debugger.
   2
   3    Copyright 2000, 2001, 2002, 2003, 2004 Free Software Foundation,
   4    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 2 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, write to the Free Software
  20    Foundation, Inc., 59 Temple Place - Suite 330,
  21    Boston, MA 02111-1307, USA.  */
  22
  23 #ifndef PPC_TDEP_H
  24 #define PPC_TDEP_H
  25
  26 struct gdbarch;
  27 struct frame_info;
  28 struct value;
  29 struct regcache;
  30 struct type;
  31
  32 /* From ppc-linux-tdep.c... */
  33 enum return_value_convention ppc_sysv_abi_return_value (struct gdbarch *gdbarch,
  34                                                         struct type *valtype,
  35                                                         struct regcache *regcache,
  36                                                         void *readbuf,
  37                                                         const void *writebuf);
  38 enum return_value_convention ppc_sysv_abi_broken_return_value (struct gdbarch *gdbarch,
  39                                                                struct type *valtype,
  40                                                                struct regcache *regcache,
  41                                                                void *readbuf,
  42                                                                const void *writebuf);
  43 CORE_ADDR ppc_sysv_abi_push_dummy_call (struct gdbarch *gdbarch,
  44                                         struct value *function,
  45                                         struct regcache *regcache,
  46                                         CORE_ADDR bp_addr, int nargs,
  47                                         struct value **args, CORE_ADDR sp,
  48                                         int struct_return,
  49                                         CORE_ADDR struct_addr);
  50 CORE_ADDR ppc64_sysv_abi_push_dummy_call (struct gdbarch *gdbarch,
  51                                           struct value *function,
  52                                           struct regcache *regcache,
  53                                           CORE_ADDR bp_addr, int nargs,
  54                                           struct value **args, CORE_ADDR sp,
  55                                           int struct_return,
  56                                           CORE_ADDR struct_addr);
  57 CORE_ADDR ppc64_sysv_abi_adjust_breakpoint_address (struct gdbarch *gdbarch,
  58                                                     CORE_ADDR bpaddr);
  59 int ppc_linux_memory_remove_breakpoint (CORE_ADDR addr, char *contents_cache);
  60 struct link_map_offsets *ppc_linux_svr4_fetch_link_map_offsets (void);
  61 void ppc_linux_supply_gregset (struct regcache *regcache,
  62                                int regnum, const void *gregs, size_t size,
  63                                int wordsize);
  64 void ppc_linux_supply_fpregset (const struct regset *regset,
  65                                 struct regcache *regcache,
  66                                 int regnum, const void *gregs, size_t size);
  67
  68 enum return_value_convention ppc64_sysv_abi_return_value (struct gdbarch *gdbarch,
  69                                                           struct type *valtype,
  70                                                           struct regcache *regcache,
  71                                                           void *readbuf,
  72                                                           const void *writebuf);
  73
  74 /* From rs6000-tdep.c... */
  75 int altivec_register_p (int regno);
  76 int spe_register_p (int regno);
  77
  78 /* Return non-zero if the architecture described by GDBARCH has
  79    floating-point registers (f0 --- f31 and fpscr).  */
  80 int ppc_floating_point_unit_p (struct gdbarch *gdbarch);
  81
  82 /* Register set description.  */
  83
  84 struct ppc_reg_offsets
  85 {
  86   /* General-purpose registers.  */
  87   int r0_offset;
  88   int pc_offset;
  89   int ps_offset;
  90   int cr_offset;
  91   int lr_offset;
  92   int ctr_offset;
  93   int xer_offset;
  94   int mq_offset;
  95
  96   /* Floating-point registers.  */
  97   int f0_offset;
  98   int fpscr_offset;
  99
 100   /* AltiVec registers.  */
 101   int vr0_offset;
 102   int vscr_offset;
 103   int vrsave_offset;
 104 };
 105
 106 /* Supply register REGNUM in the general-purpose register set REGSET
 107    from the buffer specified by GREGS and LEN to register cache
 108    REGCACHE.  If REGNUM is -1, do this for all registers in REGSET.  */
 109
 110 extern void ppc_supply_gregset (const struct regset *regset,
 111                                 struct regcache *regcache,
 112                                 int regnum, const void *gregs, size_t len);
 113
 114 /* Supply register REGNUM in the floating-point register set REGSET
 115    from the buffer specified by FPREGS and LEN to register cache
 116    REGCACHE.  If REGNUM is -1, do this for all registers in REGSET.  */
 117
 118 extern void ppc_supply_fpregset (const struct regset *regset,
 119                                  struct regcache *regcache,
 120                                  int regnum, const void *fpregs, size_t len);
 121
 122 /* Collect register REGNUM in the general-purpose register set
 123    REGSET. from register cache REGCACHE into the buffer specified by
 124    GREGS and LEN.  If REGNUM is -1, do this for all registers in
 125    REGSET.  */
 126
 127 extern void ppc_collect_gregset (const struct regset *regset,
 128                                  const struct regcache *regcache,
 129                                  int regnum, void *gregs, size_t len);
 130
 131 /* Collect register REGNUM in the floating-point register set
 132    REGSET. from register cache REGCACHE into the buffer specified by
 133    FPREGS and LEN.  If REGNUM is -1, do this for all registers in
 134    REGSET.  */
 135
 136 extern void ppc_collect_fpregset (const struct regset *regset,
 137                                   const struct regcache *regcache,
 138                                   int regnum, void *fpregs, size_t len);
 139
 140 /* Private data that this module attaches to struct gdbarch. */
 141
 142 struct gdbarch_tdep
 143   {
 144     int wordsize;              /* size in bytes of fixed-point word */
 145     const struct reg *regs;    /* from current variant */
 146     int ppc_gp0_regnum;         /* GPR register 0 */
 147     int ppc_gprs_pseudo_p;      /* non-zero if GPRs are pseudo-registers */
 148     int ppc_toc_regnum;         /* TOC register */
 149     int ppc_ps_regnum;          /* Processor (or machine) status (%msr) */
 150     int ppc_cr_regnum;          /* Condition register */
 151     int ppc_lr_regnum;          /* Link register */
 152     int ppc_ctr_regnum;         /* Count register */
 153     int ppc_xer_regnum;         /* Integer exception register */
 154
 155     /* On PPC and RS6000 variants that have no floating-point
 156        registers, the next two members will be -1.  */
 157     int ppc_fp0_regnum;         /* floating-point register 0 */
 158     int ppc_fpscr_regnum;       /* Floating point status and condition
 159                                    register */
 160
 161     int ppc_mq_regnum;          /* Multiply/Divide extension register */
 162     int ppc_vr0_regnum;         /* First AltiVec register */
 163     int ppc_vrsave_regnum;      /* Last AltiVec register */
 164     int ppc_ev0_regnum;         /* First ev register */
 165     int ppc_ev31_regnum;        /* Last ev register */
 166     int ppc_acc_regnum;         /* SPE 'acc' register */
 167     int ppc_spefscr_regnum;     /* SPE 'spefscr' register */
 168     int lr_frame_offset;        /* Offset to ABI specific location where
 169                                    link register is saved.  */
 170 };
 171
 172
 173 /* Constants for register set sizes.  */
 174 enum
 175   {
 176     ppc_num_gprs = 32,          /* 32 general-purpose registers */
 177     ppc_num_fprs = 32           /* 32 floating-point registers */
 178   };
 179
 180 #endif