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/* Target-dependent code for SPARC.
Copyright (C) 2003, 2004, 2006, 2007 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 2 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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#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) (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);
/* Return the contents if register REGNUM as an address. */
extern CORE_ADDR sparc_address_from_register (int regnum);
/* Fetch StackGhost Per-Process XOR cookie. */
extern ULONGEST sparc_fetch_wcookie (void);
extern CORE_ADDR sparc_analyze_prologue (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 void sparc_software_single_step (enum target_signal sig,
int insert_breakpoints_p);
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 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 (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 */
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