* alphaobsd-tdep.c: New file.
* alphanbsd-tdep.c (_initialize_alphanbsd_tdep): Do not register a handler for GDB_OSABI_OPENBSD_ELF. * Makefile.in (ALLDEPFILES): Add alphaobsd-tdep.c. (alphaobsd-tdep.o): New target. * config/alpha/obsd.mt: New file. * configure.tgt (alpha*-*-openbsd*): Set gdb_target to obsd.
This commit is contained in:
Mark Kettenis
parent
9823e921f2
commit
8a112c90fe
6 changed files with 157 additions and 6 deletions
|
|
@ -1,3 +1,13 @@
|
|||
2006-07-10 Mark Kettenis <kettenis@gnu.org>
|
||||
|
||||
* alphaobsd-tdep.c: New file.
|
||||
* alphanbsd-tdep.c (_initialize_alphanbsd_tdep): Do not register a
|
||||
handler for GDB_OSABI_OPENBSD_ELF.
|
||||
* Makefile.in (ALLDEPFILES): Add alphaobsd-tdep.c.
|
||||
(alphaobsd-tdep.o): New target.
|
||||
* config/alpha/obsd.mt: New file.
|
||||
* configure.tgt (alpha*-*-openbsd*): Set gdb_target to obsd.
|
||||
|
||||
2006-07-10 Richard Henderson <rth@redhat.com>
|
||||
|
||||
* alpha-tdep.h (struct gdbarch_tdep): Add return_in_memory.
|
||||
|
|
|
|||
|
|
@ -1404,9 +1404,10 @@ MAKEOVERRIDES=
|
|||
|
||||
ALLDEPFILES = \
|
||||
aix-thread.c \
|
||||
alpha-nat.c alphabsd-nat.c alpha-linux-nat.c linux-fork.c \
|
||||
alpha-tdep.c alpha-linux-tdep.c alphabsd-tdep.c alphanbsd-tdep.c \
|
||||
alpha-osf1-tdep.c alphafbsd-tdep.c alpha-mdebug-tdep.c \
|
||||
alpha-nat.c alphabsd-nat.c alpha-linux-nat.c \
|
||||
alpha-tdep.c alpha-mdebug-tdep.c \
|
||||
alpha-linux-tdep.c alpha-osf1-tdep.c \
|
||||
alphabsd-tdep.c alphafbsd-tdep.c alphanbsd-tdep.c alphaobsd-tdep.c \
|
||||
amd64-nat.c amd64-tdep.c \
|
||||
amd64bsd-nat.c amd64fbsd-nat.c amd64fbsd-tdep.c \
|
||||
amd64nbsd-nat.c amd64nbsd-tdep.c \
|
||||
|
|
@ -1440,6 +1441,7 @@ ALLDEPFILES = \
|
|||
inf-ptrace.c inf-ttrace.c \
|
||||
infptrace.c inftarg.c irix5-nat.c \
|
||||
libunwind-frame.c \
|
||||
linux-fork.c \
|
||||
lynx-nat.c \
|
||||
m68hc11-tdep.c \
|
||||
m32r-tdep.c \
|
||||
|
|
@ -1711,6 +1713,8 @@ alphanbsd-tdep.o: alphanbsd-tdep.c $(defs_h) $(frame_h) $(gdbcore_h) \
|
|||
$(regcache_h) $(regset_h) $(value_h) $(osabi_h) $(gdb_string_h) \
|
||||
$(gdb_assert_h) $(alpha_tdep_h) $(alphabsd_tdep_h) $(nbsd_tdep_h) \
|
||||
$(solib_svr4_h)
|
||||
alphaobsd-tdep.o: alphaobsd-tdep.c $(defs_h) $(frame_h) $(gdbcore_h) \
|
||||
$(osabi_h) $(alpha_tdep_h) $(alphabsd_tdep_h) $(solib_svr4_h)
|
||||
alpha-osf1-tdep.o: alpha-osf1-tdep.c $(defs_h) $(frame_h) $(gdbcore_h) \
|
||||
$(value_h) $(osabi_h) $(gdb_string_h) $(objfiles_h) $(alpha_tdep_h)
|
||||
alpha-tdep.o: alpha-tdep.c $(defs_h) $(doublest_h) $(frame_h) \
|
||||
|
|
|
|||
|
|
@ -311,6 +311,4 @@ _initialize_alphanbsd_tdep (void)
|
|||
|
||||
gdbarch_register_osabi (bfd_arch_alpha, 0, GDB_OSABI_NETBSD_ELF,
|
||||
alphanbsd_init_abi);
|
||||
gdbarch_register_osabi (bfd_arch_alpha, 0, GDB_OSABI_OPENBSD_ELF,
|
||||
alphanbsd_init_abi);
|
||||
}
|
||||
|
|
|
|||
135
gdb/alphaobsd-tdep.c
Normal file
135
gdb/alphaobsd-tdep.c
Normal file
|
|
@ -0,0 +1,135 @@
|
|||
/* Target-dependent code for OpenBSD/alpha.
|
||||
|
||||
Copyright (C) 2006 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. */
|
||||
|
||||
#include "defs.h"
|
||||
#include "frame.h"
|
||||
#include "gdbcore.h"
|
||||
#include "osabi.h"
|
||||
|
||||
#include "alpha-tdep.h"
|
||||
#include "alphabsd-tdep.h"
|
||||
#include "solib-svr4.h"
|
||||
|
||||
/* Signal trampolines. */
|
||||
|
||||
/* The OpenBSD kernel maps the signal trampoline at some random
|
||||
location in user space, which means that the traditional BSD way of
|
||||
detecting it won't work.
|
||||
|
||||
The signal trampoline will be mapped at an address that is page
|
||||
aligned. We recognize the signal trampoline by looking for the
|
||||
sigreturn system call. */
|
||||
|
||||
static const int alphaobsd_page_size = 8192;
|
||||
|
||||
static LONGEST
|
||||
alphaobsd_sigtramp_offset (CORE_ADDR pc)
|
||||
{
|
||||
return (pc & (alphaobsd_page_size - 1));
|
||||
}
|
||||
|
||||
static int
|
||||
alphaobsd_pc_in_sigtramp (CORE_ADDR pc, char *name)
|
||||
{
|
||||
CORE_ADDR start_pc = (pc & ~(alphaobsd_page_size - 1));
|
||||
unsigned insn;
|
||||
|
||||
if (name)
|
||||
return 0;
|
||||
|
||||
/* Check for "". */
|
||||
insn = alpha_read_insn (start_pc + 5 * ALPHA_INSN_SIZE);
|
||||
if (insn != 0x201f0067)
|
||||
return 0;
|
||||
|
||||
/* Check for "". */
|
||||
insn = alpha_read_insn (start_pc + 6 * ALPHA_INSN_SIZE);
|
||||
if (insn != 0x00000083)
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static CORE_ADDR
|
||||
alphaobsd_sigcontext_addr (struct frame_info *next_frame)
|
||||
{
|
||||
CORE_ADDR pc = frame_pc_unwind (next_frame);
|
||||
|
||||
if (alphaobsd_sigtramp_offset (pc) < 3 * ALPHA_INSN_SIZE)
|
||||
{
|
||||
/* On entry, a pointer the `struct sigcontext' is passed in %a2. */
|
||||
return frame_unwind_register_unsigned (next_frame, ALPHA_A0_REGNUM + 2);
|
||||
}
|
||||
else if (alphaobsd_sigtramp_offset (pc) < 4 * ALPHA_INSN_SIZE)
|
||||
{
|
||||
/* It is stored on the stack Before calling the signal handler. */
|
||||
CORE_ADDR sp;
|
||||
sp = frame_unwind_register_unsigned (next_frame, ALPHA_SP_REGNUM);
|
||||
return get_frame_memory_unsigned (next_frame, sp, 8);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* It is reloaded into %a0 for the sigreturn(2) call. */
|
||||
return frame_unwind_register_unsigned (next_frame, ALPHA_A0_REGNUM);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
alphaobsd_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);
|
||||
|
||||
/* OpenBSD/alpha 3.0 and earlier does not provide single step
|
||||
support via ptrace(2); use software single-stepping for now. */
|
||||
set_gdbarch_software_single_step (gdbarch, alpha_software_single_step);
|
||||
|
||||
/* OpenBSD/alpha has SVR4-style shared libraries. */
|
||||
set_solib_svr4_fetch_link_map_offsets
|
||||
(gdbarch, svr4_lp64_fetch_link_map_offsets);
|
||||
|
||||
tdep->dynamic_sigtramp_offset = alphaobsd_sigtramp_offset;
|
||||
tdep->pc_in_sigtramp = alphaobsd_pc_in_sigtramp;
|
||||
tdep->sigcontext_addr = alphaobsd_sigcontext_addr;
|
||||
|
||||
tdep->jb_pc = 2;
|
||||
tdep->jb_elt_size = 8;
|
||||
|
||||
set_gdbarch_regset_from_core_section
|
||||
(gdbarch, alphanbsd_regset_from_core_section);
|
||||
}
|
||||
|
||||
|
||||
/* Provide a prototype to silence -Wmissing-prototypes. */
|
||||
void _initialize_alphaobsd_tdep (void);
|
||||
|
||||
void
|
||||
_initialize_alphaobsd_tdep (void)
|
||||
{
|
||||
gdbarch_register_osabi (bfd_arch_alpha, 0, GDB_OSABI_OPENBSD_ELF,
|
||||
alphaobsd_init_abi);
|
||||
}
|
||||
4
gdb/config/alpha/obsd.mt
Normal file
4
gdb/config/alpha/obsd.mt
Normal file
|
|
@ -0,0 +1,4 @@
|
|||
# Target: OpenBSD/alpha
|
||||
TDEPFILES= alpha-tdep.o alpha-mdebug-tdep.o \
|
||||
alphabsd-tdep.o alphanbsd-tdep.o alphaobsd-tdep.o nbsd-tdep.o \
|
||||
corelow.o solib.o solib-svr4.o
|
||||
|
|
@ -45,7 +45,7 @@ alpha*-*-osf*) gdb_target=alpha-osf1 ;;
|
|||
alpha*-*-linux*) gdb_target=alpha-linux ;;
|
||||
alpha*-*-netbsd* | alpha*-*-knetbsd*-gnu)
|
||||
gdb_target=nbsd ;;
|
||||
alpha*-*-openbsd*) gdb_target=nbsd ;;
|
||||
alpha*-*-openbsd*) gdb_target=obsd ;;
|
||||
alpha*-*-*) gdb_target=alpha ;;
|
||||
|
||||
# mn10300 / am33 liunux
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue