Subversion Repositories openrisc_2011-10-31

/* Target-dependent code for SPARC.

   Copyright (C) 2003, 2004, 2006, 2007, 2008 Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#ifndef SPARC_TDEP_H

#define SPARC_TDEP_H 1

struct frame_info;

struct gdbarch;

struct regcache;

struct regset;

struct trad_frame_saved_reg;

/* Register offsets for the general-purpose register set.  */

struct sparc_gregset

{

  int r_psr_offset;

  int r_pc_offset;

  int r_npc_offset;

  int r_y_offset;

  int r_wim_offset;

  int r_tbr_offset;

  int r_g1_offset;

  int r_l0_offset;

  int r_y_size;

};

/* SPARC architecture-specific information.  */

struct gdbarch_tdep

{

  /* Register numbers for the PN and nPC registers.  The definitions

     for (64-bit) UltraSPARC differ from the (32-bit) SPARC

     definitions.  */

  int pc_regnum;

  int npc_regnum;

  /* Register sets.  */

  struct regset *gregset;

  size_t sizeof_gregset;

  struct regset *fpregset;

  size_t sizeof_fpregset;

  /* Offset of saved PC in jmp_buf.  */

  int jb_pc_offset;

  /* Size of an Procedure Linkage Table (PLT) entry, 0 if we shouldn't

     treat the PLT special when doing prologue analysis.  */

  size_t plt_entry_size;

  /* Alternative location for trap return.  Used for single-stepping.  */

  CORE_ADDR (*step_trap) (struct frame_info *frame, unsigned long insn);

};

/* Register numbers of various important registers.  */

enum sparc_regnum

{

  SPARC_G0_REGNUM,              /* %g0 */

  SPARC_G1_REGNUM,

  SPARC_G2_REGNUM,

  SPARC_G3_REGNUM,

  SPARC_G4_REGNUM,

  SPARC_G5_REGNUM,

  SPARC_G6_REGNUM,

  SPARC_G7_REGNUM,              /* %g7 */

  SPARC_O0_REGNUM,              /* %o0 */

  SPARC_O1_REGNUM,

  SPARC_O2_REGNUM,

  SPARC_O3_REGNUM,

  SPARC_O4_REGNUM,

  SPARC_O5_REGNUM,

  SPARC_SP_REGNUM,              /* %sp (%o6) */

  SPARC_O7_REGNUM,              /* %o7 */

  SPARC_L0_REGNUM,              /* %l0 */

  SPARC_L1_REGNUM,

  SPARC_L2_REGNUM,

  SPARC_L3_REGNUM,

  SPARC_L4_REGNUM,

  SPARC_L5_REGNUM,

  SPARC_L6_REGNUM,

  SPARC_L7_REGNUM,              /* %l7 */

  SPARC_I0_REGNUM,              /* %i0 */

  SPARC_I1_REGNUM,

  SPARC_I2_REGNUM,

  SPARC_I3_REGNUM,

  SPARC_I4_REGNUM,

  SPARC_I5_REGNUM,

  SPARC_FP_REGNUM,              /* %fp (%i6) */

  SPARC_I7_REGNUM,              /* %i7 */

  SPARC_F0_REGNUM,              /* %f0 */

  SPARC_F1_REGNUM,

  SPARC_F31_REGNUM              /* %f31 */

  = SPARC_F0_REGNUM + 31

};

enum sparc32_regnum

{

  SPARC32_Y_REGNUM              /* %y */

  = SPARC_F31_REGNUM + 1,

  SPARC32_PSR_REGNUM,           /* %psr */

  SPARC32_WIM_REGNUM,           /* %wim */

  SPARC32_TBR_REGNUM,           /* %tbr */

  SPARC32_PC_REGNUM,            /* %pc */

  SPARC32_NPC_REGNUM,           /* %npc */

  SPARC32_FSR_REGNUM,           /* %fsr */

  SPARC32_CSR_REGNUM,           /* %csr */

  /* Pseudo registers.  */

  SPARC32_D0_REGNUM,            /* %d0 */

  SPARC32_D30_REGNUM            /* %d30 */

  = SPARC32_D0_REGNUM + 15

};

struct sparc_frame_cache

{

  /* Base address.  */

  CORE_ADDR base;

  CORE_ADDR pc;

  /* Do we have a frame?  */

  int frameless_p;

  /* Do we have a Structure, Union or Quad-Precision return value?.  */

  int struct_return_p;

  /* Table of saved registers.  */

  struct trad_frame_saved_reg *saved_regs;

};

/* Fetch the instruction at PC.  */

extern unsigned long sparc_fetch_instruction (CORE_ADDR pc);

/* Fetch StackGhost Per-Process XOR cookie.  */

extern ULONGEST sparc_fetch_wcookie (void);

extern CORE_ADDR sparc_analyze_prologue (struct gdbarch *gdbarch,

                                         CORE_ADDR pc, CORE_ADDR current_pc,

                                         struct sparc_frame_cache *cache);

extern struct sparc_frame_cache *

  sparc_frame_cache (struct frame_info *next_frame, void **this_cache);

extern struct sparc_frame_cache *

  sparc32_frame_cache (struct frame_info *next_frame, void **this_cache);

extern int sparc_software_single_step (struct frame_info *frame);

extern void sparc_supply_rwindow (struct regcache *regcache,

                                  CORE_ADDR sp, int regnum);

extern void sparc_collect_rwindow (const struct regcache *regcache,

                                   CORE_ADDR sp, int regnum);

/* Register offsets for SunOS 4.  */

extern const struct sparc_gregset sparc32_sunos4_gregset;

extern void sparc32_supply_gregset (const struct sparc_gregset *gregset,

                                    struct regcache *regcache,

                                    int regnum, const void *gregs);

extern void sparc32_collect_gregset (const struct sparc_gregset *gregset,

                                     const struct regcache *regcache,

                                     int regnum, void *gregs);

extern void sparc32_supply_fpregset (struct regcache *regcache,

                                     int regnum, const void *fpregs);

extern void sparc32_collect_fpregset (const struct regcache *regcache,

                                      int regnum, void *fpregs);

/* Functions and variables exported from sparc-sol2-tdep.c.  */

/* Register offsets for Solaris 2.  */

extern const struct sparc_gregset sparc32_sol2_gregset;

extern int sparc_sol2_pc_in_sigtramp (CORE_ADDR pc, char *name);

extern char *sparc_sol2_static_transform_name (char *name);

extern void sparc32_sol2_init_abi (struct gdbarch_info info,

                                   struct gdbarch *gdbarch);

/* Functions and variables exported from sparcnbsd-tdep.c.  */

/* Register offsets for NetBSD.  */

extern const struct sparc_gregset sparc32nbsd_gregset;

/* Return the address of a system call's alternative return

   address.  */

extern CORE_ADDR sparcnbsd_step_trap (struct frame_info *frame,

                                      unsigned long insn);

extern void sparc32nbsd_elf_init_abi (struct gdbarch_info info,

                                      struct gdbarch *gdbarch);

extern struct trad_frame_saved_reg *

  sparc32nbsd_sigcontext_saved_regs (struct frame_info *next_frame);

#endif /* sparc-tdep.h */