binutils-gdb/gdb/microblaze-linux-tdep.c

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/* Target-dependent code for Xilinx MicroBlaze.
2011-01-01 16:34:07 +01:00
Copyright 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/>. */
#include "defs.h"
#include "frame.h"
#include "inferior.h"
#include "symtab.h"
#include "target.h"
#include "gdbcore.h"
#include "gdbcmd.h"
#include "symfile.h"
#include "objfiles.h"
#include "regcache.h"
#include "value.h"
#include "osabi.h"
#include "regset.h"
#include "solib-svr4.h"
#include "microblaze-tdep.h"
#include "trad-frame.h"
#include "frame-unwind.h"
#include "tramp-frame.h"
* corelow.c (core_pid_to_str): Default to using normal_pid_to_str instead of printing "Thread" here. * linux-tdep.c: Include inferior.h. (linux_core_pid_to_str): New. (linux_init_abi): New. * linux-tdep.h (linux_init_abi): Declare. * alpha-linux-tdep.c: Include linux-tdep.h. (alpha_linux_init_abi): Call linux_init_abi. * amd64-linux-tdep.c (amd64_linux_init_abi): Call linux_init_abi. * arm-linux-tdep.c (arm_linux_init_abi): Call linux_init_abi. * frv-linux-tdep.c: Include linux-tdep.h (frv_linux_init_abi): Call linux_init_abi. * hppa-linux-tdep.c: Include linux-tdep.h (hppa_linux_init_abi): Call linux_init_abi. * i386-linux-tdep.c (i386_linux_init_abi): Call linux_init_abi. * ia64-linux-tdep.c: Include linux-tdep.h. (ia64_linux_init_abi): Call linux_init_abi. * m32r-linux-tdep.c: Include linux-tdep.h. (m32r_linux_init_abi): Call linux_init_abi. * m68klinux-tdep.c: Include linux-tdep.h. (m68k_linux_init_abi): Call linux_init_abi. * microblaze-linux-tdep.c: Include linux-tdep.h. (microblaze_linux_init_abi): Call linux_init_abi. * mips-linux-tdep.c: Include linux-tdep.h. (mips_linux_init_abi): Call linux_init_abi. * mn10300-linux-tdep.c: Include linux-tdep.h. (am33_linux_init_osabi): Call linux_init_abi. Rename the 'gdbinfo' parameter to 'info'. * ppc-linux-tdep.c: Include linux-tdep.h. (ppc_linux_init_abi): Call linux_init_abi. * sh-linux-tdep.c: Include linux-tdep.h. (sh_linux_init_abi): Call linux_init_abi. * sparc-linux-tdep.c: Include linux-tdep.h. (sparc32_linux_init_abi): Call linux_init_abi. * sparc64-linux-tdep.c: Include linux-tdep.h. (sparc64_linux_init_abi): Call linux_init_abi. * xtensa-linux-tdep.c: Include linux-tdep.h. (xtensa_linux_init_abi): Call linux_init_abi. * i386-cygwin-tdep.c (i386_windows_core_pid_to_str): New. (i386_cygwin_init_abi): Install it as gdbarch_core_pid_to_str callback.
2010-08-04 17:27:57 +02:00
#include "linux-tdep.h"
static int
microblaze_linux_memory_remove_breakpoint (struct gdbarch *gdbarch,
struct bp_target_info *bp_tgt)
{
CORE_ADDR addr = bp_tgt->placed_address;
const gdb_byte *bp;
int val;
int bplen;
gdb_byte old_contents[BREAKPOINT_MAX];
/* Determine appropriate breakpoint contents and size for this address. */
bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &bplen);
if (bp == NULL)
error (_("Software breakpoints not implemented for this target."));
val = target_read_memory (addr, old_contents, bplen);
/* If our breakpoint is no longer at the address, this means that the
program modified the code on us, so it is wrong to put back the
old value. */
if (val == 0 && memcmp (bp, old_contents, bplen) == 0)
val = target_write_memory (addr, bp_tgt->shadow_contents, bplen);
return val;
}
static void
microblaze_linux_sigtramp_cache (struct frame_info *next_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func, LONGEST offset,
int bias)
{
CORE_ADDR base;
CORE_ADDR gpregs;
int regnum;
struct gdbarch *gdbarch = get_frame_arch (next_frame);
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
base = frame_unwind_register_unsigned (next_frame, MICROBLAZE_SP_REGNUM);
if (bias > 0 && get_frame_address_in_block (next_frame) != func)
/* See below, some signal trampolines increment the stack as their
first instruction, need to compensate for that. */
base -= bias;
/* Find the address of the register buffer. */
gpregs = base + offset;
/* Registers saved on stack. */
for (regnum = 0; regnum < MICROBLAZE_BTR_REGNUM; regnum++)
trad_frame_set_reg_addr (this_cache, regnum,
gpregs + regnum * MICROBLAZE_REGISTER_SIZE);
trad_frame_set_id (this_cache, frame_id_build (base, func));
}
static void
microblaze_linux_sighandler_cache_init (const struct tramp_frame *self,
struct frame_info *next_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func)
{
microblaze_linux_sigtramp_cache (next_frame, this_cache, func,
0 /* Offset to ucontext_t. */
+ 24 /* Offset to .reg. */,
0);
}
static struct tramp_frame microblaze_linux_sighandler_tramp_frame =
{
SIGTRAMP_FRAME,
4,
{
{ 0x31800077, -1 }, /* addik R12,R0,119. */
{ 0xb9cc0008, -1 }, /* brki R14,8. */
{ TRAMP_SENTINEL_INSN },
},
microblaze_linux_sighandler_cache_init
};
static void
microblaze_linux_init_abi (struct gdbarch_info info,
struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
* corelow.c (core_pid_to_str): Default to using normal_pid_to_str instead of printing "Thread" here. * linux-tdep.c: Include inferior.h. (linux_core_pid_to_str): New. (linux_init_abi): New. * linux-tdep.h (linux_init_abi): Declare. * alpha-linux-tdep.c: Include linux-tdep.h. (alpha_linux_init_abi): Call linux_init_abi. * amd64-linux-tdep.c (amd64_linux_init_abi): Call linux_init_abi. * arm-linux-tdep.c (arm_linux_init_abi): Call linux_init_abi. * frv-linux-tdep.c: Include linux-tdep.h (frv_linux_init_abi): Call linux_init_abi. * hppa-linux-tdep.c: Include linux-tdep.h (hppa_linux_init_abi): Call linux_init_abi. * i386-linux-tdep.c (i386_linux_init_abi): Call linux_init_abi. * ia64-linux-tdep.c: Include linux-tdep.h. (ia64_linux_init_abi): Call linux_init_abi. * m32r-linux-tdep.c: Include linux-tdep.h. (m32r_linux_init_abi): Call linux_init_abi. * m68klinux-tdep.c: Include linux-tdep.h. (m68k_linux_init_abi): Call linux_init_abi. * microblaze-linux-tdep.c: Include linux-tdep.h. (microblaze_linux_init_abi): Call linux_init_abi. * mips-linux-tdep.c: Include linux-tdep.h. (mips_linux_init_abi): Call linux_init_abi. * mn10300-linux-tdep.c: Include linux-tdep.h. (am33_linux_init_osabi): Call linux_init_abi. Rename the 'gdbinfo' parameter to 'info'. * ppc-linux-tdep.c: Include linux-tdep.h. (ppc_linux_init_abi): Call linux_init_abi. * sh-linux-tdep.c: Include linux-tdep.h. (sh_linux_init_abi): Call linux_init_abi. * sparc-linux-tdep.c: Include linux-tdep.h. (sparc32_linux_init_abi): Call linux_init_abi. * sparc64-linux-tdep.c: Include linux-tdep.h. (sparc64_linux_init_abi): Call linux_init_abi. * xtensa-linux-tdep.c: Include linux-tdep.h. (xtensa_linux_init_abi): Call linux_init_abi. * i386-cygwin-tdep.c (i386_windows_core_pid_to_str): New. (i386_cygwin_init_abi): Install it as gdbarch_core_pid_to_str callback.
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linux_init_abi (info, gdbarch);
set_gdbarch_memory_remove_breakpoint (gdbarch,
microblaze_linux_memory_remove_breakpoint);
/* Shared library handling. */
set_solib_svr4_fetch_link_map_offsets (gdbarch,
svr4_ilp32_fetch_link_map_offsets);
/* Trampolines. */
tramp_frame_prepend_unwinder (gdbarch,
&microblaze_linux_sighandler_tramp_frame);
}
void
_initialize_microblaze_linux_tdep (void)
{
gdbarch_register_osabi (bfd_arch_microblaze, 0, GDB_OSABI_LINUX,
microblaze_linux_init_abi);
}