116 lines
3.8 KiB
C
116 lines
3.8 KiB
C
/* Target-dependent code for HPUX running on PA-RISC, for GDB.
|
|
|
|
Copyright 2002, 2003 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
|
|
|
#include "defs.h"
|
|
#include "arch-utils.h"
|
|
#include "gdbcore.h"
|
|
#include "osabi.h"
|
|
#include "gdb_string.h"
|
|
|
|
/* Forward declarations. */
|
|
extern void _initialize_hppa_hpux_tdep (void);
|
|
extern initialize_file_ftype _initialize_hppa_hpux_tdep;
|
|
|
|
/* FIXME: brobecker 2002-12-25. The following functions will eventually
|
|
become static, after the multiarching conversion is done. */
|
|
int hppa_hpux_pc_in_sigtramp (CORE_ADDR pc, char *name);
|
|
void hppa_hpux_frame_saved_pc_in_sigtramp (struct frame_info *fi,
|
|
CORE_ADDR *tmp);
|
|
void hppa_hpux_frame_base_before_sigtramp (struct frame_info *fi,
|
|
CORE_ADDR *tmp);
|
|
void hppa_hpux_frame_find_saved_regs_in_sigtramp
|
|
(struct frame_info *fi, CORE_ADDR *fsr);
|
|
|
|
int
|
|
hppa_hpux_pc_in_sigtramp (CORE_ADDR pc, char *name)
|
|
{
|
|
/* Actually, for a PA running HPUX the kernel calls the signal handler
|
|
without an intermediate trampoline. Luckily the kernel always sets
|
|
the return pointer for the signal handler to point to _sigreturn. */
|
|
return (name && (strcmp ("_sigreturn", name) == 0));
|
|
}
|
|
|
|
/* For hppa_hpux_frame_saved_pc_in_sigtramp,
|
|
hppa_hpux_frame_base_before_sigtramp and
|
|
hppa_hpux_frame_find_saved_regs_in_sigtramp:
|
|
|
|
The signal context structure pointer is always saved at the base
|
|
of the frame which "calls" the signal handler. We only want to find
|
|
the hardware save state structure, which lives 10 32bit words into
|
|
sigcontext structure.
|
|
|
|
Within the hardware save state structure, registers are found in the
|
|
same order as the register numbers in GDB.
|
|
|
|
At one time we peeked at %r31 rather than the PC queues to determine
|
|
what instruction took the fault. This was done on purpose, but I don't
|
|
remember why. Looking at the PC queues is really the right way, and
|
|
I don't remember why that didn't work when this code was originally
|
|
written. */
|
|
|
|
void
|
|
hppa_hpux_frame_saved_pc_in_sigtramp (struct frame_info *fi, CORE_ADDR *tmp)
|
|
{
|
|
*tmp = read_memory_integer (get_frame_base (fi) + (43 * 4), 4);
|
|
}
|
|
|
|
void
|
|
hppa_hpux_frame_base_before_sigtramp (struct frame_info *fi,
|
|
CORE_ADDR *tmp)
|
|
{
|
|
*tmp = read_memory_integer (get_frame_base (fi) + (40 * 4), 4);
|
|
}
|
|
|
|
void
|
|
hppa_hpux_frame_find_saved_regs_in_sigtramp (struct frame_info *fi,
|
|
CORE_ADDR *fsr)
|
|
{
|
|
int i;
|
|
const CORE_ADDR tmp = get_frame_base (fi) + (10 * 4);
|
|
|
|
for (i = 0; i < NUM_REGS; i++)
|
|
{
|
|
if (i == SP_REGNUM)
|
|
fsr[SP_REGNUM] = read_memory_integer (tmp + SP_REGNUM * 4, 4);
|
|
else
|
|
fsr[i] = tmp + i * 4;
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
hppa_hpux_som_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
|
{
|
|
}
|
|
|
|
static void
|
|
hppa_hpux_elf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
|
{
|
|
}
|
|
|
|
void
|
|
_initialize_hppa_hpux_tdep (void)
|
|
{
|
|
gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_HPUX_SOM,
|
|
hppa_hpux_som_init_abi);
|
|
gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_HPUX_ELF,
|
|
hppa_hpux_elf_init_abi);
|
|
}
|