blob: d2c1d94f32e135e51e9271dff23168164a8cd980 [file] [log] [blame]
/* Target-dependent code for FreeBSD/alpha.
Copyright (C) 2001-2003, 2006-2012 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
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 <>. */
#include "defs.h"
#include "value.h"
#include "osabi.h"
#include "alpha-tdep.h"
#include "solib-svr4.h"
static int
alphafbsd_return_in_memory (struct type *type)
enum type_code code;
int i;
/* All aggregate types that won't fit in a register must be returned
in memory. */
return 1;
/* The only aggregate types that can be returned in a register are
structs and unions. Arrays must be returned in memory. */
code = TYPE_CODE (type);
if (code != TYPE_CODE_STRUCT && code != TYPE_CODE_UNION)
return 1;
/* We need to check if this struct/union is "integer" like. For
this to be true, the offset of each adressable subfield must be
zero. Note that bit fields are not addressable. */
for (i = 0; i < TYPE_NFIELDS (type); i++)
/* If the field bitsize is non-zero, it isn't adressable. */
if (TYPE_FIELD_BITPOS (type, i) != 0
&& TYPE_FIELD_BITSIZE (type, i) == 0)
return 1;
return 0;
/* Support for signal handlers. */
/* Return whether PC is in a BSD sigtramp routine. */
CORE_ADDR alphafbsd_sigtramp_start = 0x11ffff68;
CORE_ADDR alphafbsd_sigtramp_end = 0x11ffffe0;
static int
alphafbsd_pc_in_sigtramp (struct gdbarch *gdbarch,
CORE_ADDR pc, const char *func_name)
return (pc >= alphafbsd_sigtramp_start && pc < alphafbsd_sigtramp_end);
static LONGEST
alphafbsd_sigtramp_offset (struct gdbarch *gdbarch, CORE_ADDR pc)
return pc - alphafbsd_sigtramp_start;
/* Assuming THIS_FRAME is the frame of a BSD sigtramp routine,
return the address of the associated sigcontext structure. */
static CORE_ADDR
alphafbsd_sigcontext_addr (struct frame_info *this_frame)
return get_frame_register_unsigned (this_frame, ALPHA_SP_REGNUM) + 24;
/* FreeBSD 5.0-RELEASE or later. */
static void
alphafbsd_init_abi (struct gdbarch_info info,
struct gdbarch *gdbarch)
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* Hook into the DWARF CFI frame unwinder. */
alpha_dwarf2_init_abi (info, gdbarch);
/* Hook into the MDEBUG frame unwinder. */
alpha_mdebug_init_abi (info, gdbarch);
/* FreeBSD/alpha has SVR4-style shared libraries. */
(gdbarch, svr4_lp64_fetch_link_map_offsets);
tdep->dynamic_sigtramp_offset = alphafbsd_sigtramp_offset;
tdep->sigcontext_addr = alphafbsd_sigcontext_addr;
tdep->pc_in_sigtramp = alphafbsd_pc_in_sigtramp;
tdep->return_in_memory = alphafbsd_return_in_memory;
tdep->sc_pc_offset = 288;
tdep->sc_regs_offset = 24;
tdep->sc_fpregs_offset = 320;
tdep->jb_pc = 2;
tdep->jb_elt_size = 8;
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_alphafbsd_tdep (void);
_initialize_alphafbsd_tdep (void)
gdbarch_register_osabi (bfd_arch_alpha, 0, GDB_OSABI_FREEBSD_ELF,