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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.2/] [gdb/] [alpha-tdep.h] - Blame information for rev 330

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1 330 jeremybenn
/* Common target dependent code for GDB on Alpha systems.
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   Copyright (C) 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002, 2003, 2007,
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   2008, 2009, 2010 Free Software Foundation, Inc.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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#ifndef ALPHA_TDEP_H
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#define ALPHA_TDEP_H
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struct regcache;
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/* Say how long (ordinary) registers are.  This is a piece of bogosity
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   used in push_word and a few other places; register_size() is the
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   real way to know how big a register is.  */
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#define ALPHA_REGISTER_SIZE 8
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/* Number of machine registers.  */
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#define ALPHA_NUM_REGS 67
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/* Register numbers of various important registers.  Note that most of
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   these values are "real" register numbers, and correspond to the
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   general registers of the machine.  */
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#define ALPHA_V0_REGNUM      0  /* Function integer return value */
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#define ALPHA_T7_REGNUM      8  /* Return address register for OSF/1 __add* */
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#define ALPHA_S0_REGNUM      9  /* First saved register */
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#define ALPHA_GCC_FP_REGNUM 15  /* Used by gcc as frame register */
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#define ALPHA_A0_REGNUM     16  /* Loc of first arg during a subr call */
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#define ALPHA_T9_REGNUM     23  /* Return address register for OSF/1 __div* */
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#define ALPHA_RA_REGNUM     26  /* Contains return address value */
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#define ALPHA_T12_REGNUM    27  /* Contains start addr of current proc */
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#define ALPHA_GP_REGNUM     29  /* Contains the global pointer */
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#define ALPHA_SP_REGNUM     30  /* Contains address of top of stack */
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#define ALPHA_ZERO_REGNUM   31  /* Read-only register, always 0 */
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#define ALPHA_FP0_REGNUM    32  /* Floating point register 0 */
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#define ALPHA_FPA0_REGNUM   48  /* First float arg during a subr call */
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#define ALPHA_FPCR_REGNUM   63  /* Floating point control register */
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#define ALPHA_PC_REGNUM     64  /* Contains program counter */
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#define ALPHA_UNIQUE_REGNUM 66  /* PAL_rduniq value */
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/* Instruction size.  */
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#define ALPHA_INSN_SIZE 4
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/* The alpha has two different virtual pointers for arguments and locals.
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   The virtual argument pointer is pointing to the bottom of the argument
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   transfer area, which is located immediately below the virtual frame
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   pointer. Its size is fixed for the native compiler, it is either zero
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   (for the no arguments case) or large enough to hold all argument registers.
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   gcc uses a variable sized argument transfer area. As it has
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   to stay compatible with the native debugging tools it has to use the same
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   virtual argument pointer and adjust the argument offsets accordingly.
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   The virtual local pointer is localoff bytes below the virtual frame
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   pointer, the value of localoff is obtained from the PDR.  */
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#define ALPHA_NUM_ARG_REGS   6
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/* Target-dependent structure in gdbarch.  */
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struct gdbarch_tdep
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{
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  CORE_ADDR vm_min_address;     /* Used by alpha_heuristic_proc_start.  */
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  /* If PC is inside a dynamically-generated signal trampoline function
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     (i.e. one copied onto the user stack at run-time), return how many
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     bytes PC is beyond the start of that function.  Otherwise, return -1.  */
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  LONGEST (*dynamic_sigtramp_offset) (struct gdbarch *, CORE_ADDR);
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  /* Translate a signal handler stack base address into the address of
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     the sigcontext structure for that signal handler.  */
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  CORE_ADDR (*sigcontext_addr) (struct frame_info *);
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  /* Does the PC fall in a signal trampoline.  */
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  /* NOTE: cagney/2004-04-30: Do not copy/clone this code.  Instead
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     look at tramp-frame.h and other simplier per-architecture
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     sigtramp unwinders.  */
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  int (*pc_in_sigtramp) (struct gdbarch *gdbarch, CORE_ADDR pc, char *name);
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  /* If TYPE will be returned in memory, return true.  */
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  int (*return_in_memory) (struct type *type);
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  /* Offset of registers in `struct sigcontext'.  */
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  int sc_pc_offset;
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  int sc_regs_offset;
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  int sc_fpregs_offset;
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  int jb_pc;                    /* Offset to PC value in jump buffer.
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                                   If htis is negative, longjmp support
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                                   will be disabled.  */
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  size_t jb_elt_size;           /* And the size of each entry in the buf. */
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};
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extern unsigned int alpha_read_insn (struct gdbarch *gdbarch, CORE_ADDR pc);
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extern int alpha_software_single_step (struct frame_info *frame);
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extern CORE_ADDR alpha_after_prologue (CORE_ADDR pc);
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extern void alpha_mdebug_init_abi (struct gdbarch_info, struct gdbarch *);
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extern void alpha_dwarf2_init_abi (struct gdbarch_info, struct gdbarch *);
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extern void alpha_supply_int_regs (struct regcache *, int, const void *,
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                                   const void *, const void *);
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extern void alpha_fill_int_regs (const struct regcache *, int,
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                                 void *, void *, void *);
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extern void alpha_supply_fp_regs (struct regcache *, int,
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                                  const void *, const void *);
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extern void alpha_fill_fp_regs (const struct regcache *,
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                                int, void *, void *);
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#endif /* ALPHA_TDEP_H */

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