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Add support for FDPIC executables.

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This commit is contained in:
Kevin Buettner 2004-03-13 00:16:23 +00:00
parent 60e56bb8e3
commit 7e2958339b
3 changed files with 99 additions and 1 deletions
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3
gdb/Makefile.in
View file

@ -569,6 +569,7 @@ elf_reloc_macros_h = $(INCLUDE_DIR)/elf/reloc-macros.h
elf_sh_h = $(INCLUDE_DIR)/elf/sh.h
elf_arm_h = $(INCLUDE_DIR)/elf/arm.h $(elf_reloc_macros_h)
elf_bfd_h = $(BFD_SRC)/elf-bfd.h
elf_frv_h = $(INCLUDE_DIR)/elf/frv.h $(elf_reloc_macros_h)
libaout_h = $(BFD_SRC)/libaout.h
libbfd_h = $(BFD_SRC)/libbfd.h
remote_sim_h = $(INCLUDE_DIR)/gdb/remote-sim.h
@ -658,6 +659,7 @@ f_lang_h = f-lang.h
frame_base_h = frame-base.h
frame_h = frame.h
frame_unwind_h = frame-unwind.h $(frame_h)
frv_tdep_h = frv-tdep.h
gdbarch_h = gdbarch.h
gdb_assert_h = gdb_assert.h
gdbcmd_h = gdbcmd.h $(command_h) $(ui_out_h)
@ -1769,6 +1771,7 @@ frv-tdep.o: frv-tdep.c $(defs_h) $(gdb_string_h) $(inferior_h) $(gdbcore_h) \
$(arch_utils_h) $(regcache_h) $(frame_h) $(frame_unwind_h) \
$(frame_base_h) $(trad_frame_h) $(dis_asm_h) $(gdb_assert_h) \
$(sim_regno_h) $(gdb_sim_frv_h) $(opcodes_frv_desc_h) $(symtab_h)
$(elf_bfd_h) $(elf_frv_h) $(osabi_h) $(frv_tdep_h)
f-typeprint.o: f-typeprint.c $(defs_h) $(gdb_obstack_h) $(bfd_h) $(symtab_h) \
$(gdbtypes_h) $(expression_h) $(value_h) $(gdbcore_h) $(target_h) \
$(f_lang_h) $(gdb_string_h)

62
gdb/frv-tdep.c
View file

@ -34,6 +34,10 @@
#include "gdb/sim-frv.h"
#include "opcodes/frv-desc.h" /* for the H_SPR_... enums */
#include "symtab.h"
#include "elf-bfd.h"
#include "elf/frv.h"
#include "osabi.h"
#include "frv-tdep.h"
extern void _initialize_frv_tdep (void);
@ -69,6 +73,8 @@ enum {
psr_regnum = 129,
ccr_regnum = 130,
cccr_regnum = 131,
fdpic_loadmap_exec_regnum = 132,
fdpic_loadmap_interp_regnum = 133,
tbr_regnum = 135,
brr_regnum = 136,
dbar0_regnum = 137,
@ -129,6 +135,9 @@ struct frv_unwind_cache /* was struct frame_extra_info */
Fortran. */
struct gdbarch_tdep
{
/* Which ABI is in use? */
enum frv_abi frv_abi;
/* How many general-purpose registers does this variant have? */
int num_gprs;
@ -147,6 +156,41 @@ struct gdbarch_tdep
#define CURRENT_VARIANT (gdbarch_tdep (current_gdbarch))
/* Return the FR-V ABI associated with GDBARCH. */
enum frv_abi
frv_abi (struct gdbarch *gdbarch)
{
return gdbarch_tdep (gdbarch)->frv_abi;
}
/* Fetch the interpreter and executable loadmap addresses (for shared
library support) for the FDPIC ABI. Return 0 if successful, -1 if
not. (E.g, -1 will be returned if the ABI isn't the FDPIC ABI.) */
int
frv_fdpic_loadmap_addresses (struct gdbarch *gdbarch, CORE_ADDR *interp_addr,
CORE_ADDR *exec_addr)
{
if (frv_abi (gdbarch) != FRV_ABI_FDPIC)
return -1;
else
{
if (interp_addr != NULL)
{
ULONGEST val;
regcache_cooked_read_unsigned (current_regcache,
fdpic_loadmap_interp_regnum, &val);
*interp_addr = val;
}
if (exec_addr != NULL)
{
ULONGEST val;
regcache_cooked_read_unsigned (current_regcache,
fdpic_loadmap_exec_regnum, &val);
*exec_addr = val;
}
return 0;
}
}
/* Allocate a new variant structure, and set up default values for all
the fields. */
@ -160,6 +204,7 @@ new_variant (void)
var = xmalloc (sizeof (*var));
memset (var, 0, sizeof (*var));
var->frv_abi = FRV_ABI_EABI;
var->num_gprs = 64;
var->num_fprs = 64;
var->num_hw_watchpoints = 0;
@ -238,6 +283,13 @@ set_variant_num_fprs (struct gdbarch_tdep *var, int num_fprs)
}
}
static void
set_variant_abi_fdpic (struct gdbarch_tdep *var)
{
var->frv_abi = FRV_ABI_FDPIC;
var->register_names[fdpic_loadmap_exec_regnum] = xstrdup ("loadmap_exec");
var->register_names[fdpic_loadmap_interp_regnum] = xstrdup ("loadmap_interp");
}
static const char *
frv_register_name (int reg)
@ -1276,6 +1328,7 @@ frv_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
struct gdbarch *gdbarch;
struct gdbarch_tdep *var;
int elf_flags = 0;
/* Check to see if we've already built an appropriate architecture
object for this executable. */
@ -1305,7 +1358,14 @@ frv_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
/* Never heard of this variant. */
return 0;
}
/* Extract the ELF flags, if available. */
if (info.abfd && bfd_get_flavour (info.abfd) == bfd_target_elf_flavour)
elf_flags = elf_elfheader (info.abfd)->e_flags;
if (elf_flags & EF_FRV_FDPIC)
set_variant_abi_fdpic (var);
gdbarch = gdbarch_alloc (&info, var);
set_gdbarch_short_bit (gdbarch, 16);

35
gdb/frv-tdep.h Normal file
View file

@ -0,0 +1,35 @@
/* Architecture-dependent code for the Fujitsu FR-V, for GDB, the GNU Debugger.
Copyright 2004 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. */
/* Enumerate the possible ABIs for FR-V. */
enum frv_abi
{
FRV_ABI_EABI,
FRV_ABI_FDPIC
};
/* Return the FR-V ABI associated with GDBARCH. */
enum frv_abi frv_abi (struct gdbarch *gdbarch);
/* Fetch the interpreter and executable loadmap addresses (for shared
library support) for the FDPIC ABI. Return 0 if successful, -1 if
not. (E.g, -1 will be returned if the ABI isn't the FDPIC ABI.) */
int frv_fdpic_loadmap_addresses (struct gdbarch *gdbarch,
CORE_ADDR *interp_addr, CORE_ADDR *exec_addr);