122 lines
5.3 KiB
C
122 lines
5.3 KiB
C
/* Common target dependent code for GDB on Alpha systems.
|
|
Copyright (C) 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002, 2003, 2007,
|
|
2008, 2009, 2010, 2011 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 ALPHA_TDEP_H
|
|
#define ALPHA_TDEP_H
|
|
|
|
struct regcache;
|
|
|
|
/* Say how long (ordinary) registers are. This is a piece of bogosity
|
|
used in push_word and a few other places; register_size() is the
|
|
real way to know how big a register is. */
|
|
#define ALPHA_REGISTER_SIZE 8
|
|
|
|
/* Number of machine registers. */
|
|
#define ALPHA_NUM_REGS 67
|
|
|
|
/* Register numbers of various important registers. Note that most of
|
|
these values are "real" register numbers, and correspond to the
|
|
general registers of the machine. */
|
|
|
|
#define ALPHA_V0_REGNUM 0 /* Function integer return value */
|
|
#define ALPHA_T7_REGNUM 8 /* Return address register for OSF/1 __add* */
|
|
#define ALPHA_S0_REGNUM 9 /* First saved register */
|
|
#define ALPHA_GCC_FP_REGNUM 15 /* Used by gcc as frame register */
|
|
#define ALPHA_A0_REGNUM 16 /* Loc of first arg during a subr call */
|
|
#define ALPHA_T9_REGNUM 23 /* Return address register for OSF/1 __div* */
|
|
#define ALPHA_RA_REGNUM 26 /* Contains return address value */
|
|
#define ALPHA_T12_REGNUM 27 /* Contains start addr of current proc */
|
|
#define ALPHA_GP_REGNUM 29 /* Contains the global pointer */
|
|
#define ALPHA_SP_REGNUM 30 /* Contains address of top of stack */
|
|
#define ALPHA_ZERO_REGNUM 31 /* Read-only register, always 0 */
|
|
#define ALPHA_FP0_REGNUM 32 /* Floating point register 0 */
|
|
#define ALPHA_FPA0_REGNUM 48 /* First float arg during a subr call */
|
|
#define ALPHA_FPCR_REGNUM 63 /* Floating point control register */
|
|
#define ALPHA_PC_REGNUM 64 /* Contains program counter */
|
|
#define ALPHA_UNIQUE_REGNUM 66 /* PAL_rduniq value */
|
|
|
|
/* Instruction size. */
|
|
#define ALPHA_INSN_SIZE 4
|
|
|
|
/* The alpha has two different virtual pointers for arguments and locals.
|
|
|
|
The virtual argument pointer is pointing to the bottom of the argument
|
|
transfer area, which is located immediately below the virtual frame
|
|
pointer. Its size is fixed for the native compiler, it is either zero
|
|
(for the no arguments case) or large enough to hold all argument registers.
|
|
gcc uses a variable sized argument transfer area. As it has
|
|
to stay compatible with the native debugging tools it has to use the same
|
|
virtual argument pointer and adjust the argument offsets accordingly.
|
|
|
|
The virtual local pointer is localoff bytes below the virtual frame
|
|
pointer, the value of localoff is obtained from the PDR. */
|
|
#define ALPHA_NUM_ARG_REGS 6
|
|
|
|
/* Target-dependent structure in gdbarch. */
|
|
struct gdbarch_tdep
|
|
{
|
|
CORE_ADDR vm_min_address; /* Used by alpha_heuristic_proc_start. */
|
|
|
|
/* If PC is inside a dynamically-generated signal trampoline function
|
|
(i.e. one copied onto the user stack at run-time), return how many
|
|
bytes PC is beyond the start of that function. Otherwise, return -1. */
|
|
LONGEST (*dynamic_sigtramp_offset) (struct gdbarch *, CORE_ADDR);
|
|
|
|
/* Translate a signal handler stack base address into the address of
|
|
the sigcontext structure for that signal handler. */
|
|
CORE_ADDR (*sigcontext_addr) (struct frame_info *);
|
|
|
|
/* Does the PC fall in a signal trampoline. */
|
|
/* NOTE: cagney/2004-04-30: Do not copy/clone this code. Instead
|
|
look at tramp-frame.h and other simplier per-architecture
|
|
sigtramp unwinders. */
|
|
int (*pc_in_sigtramp) (struct gdbarch *gdbarch, CORE_ADDR pc, char *name);
|
|
|
|
/* If TYPE will be returned in memory, return true. */
|
|
int (*return_in_memory) (struct type *type);
|
|
|
|
/* Offset of registers in `struct sigcontext'. */
|
|
int sc_pc_offset;
|
|
int sc_regs_offset;
|
|
int sc_fpregs_offset;
|
|
|
|
int jb_pc; /* Offset to PC value in jump buffer.
|
|
If htis is negative, longjmp support
|
|
will be disabled. */
|
|
size_t jb_elt_size; /* And the size of each entry in the buf. */
|
|
};
|
|
|
|
extern unsigned int alpha_read_insn (struct gdbarch *gdbarch, CORE_ADDR pc);
|
|
extern int alpha_software_single_step (struct frame_info *frame);
|
|
extern CORE_ADDR alpha_after_prologue (CORE_ADDR pc);
|
|
|
|
extern void alpha_mdebug_init_abi (struct gdbarch_info, struct gdbarch *);
|
|
extern void alpha_dwarf2_init_abi (struct gdbarch_info, struct gdbarch *);
|
|
|
|
extern void alpha_supply_int_regs (struct regcache *, int, const void *,
|
|
const void *, const void *);
|
|
extern void alpha_fill_int_regs (const struct regcache *, int,
|
|
void *, void *, void *);
|
|
extern void alpha_supply_fp_regs (struct regcache *, int,
|
|
const void *, const void *);
|
|
extern void alpha_fill_fp_regs (const struct regcache *,
|
|
int, void *, void *);
|
|
|
|
#endif /* ALPHA_TDEP_H */
|