-/* Target-dependent code for SuperH running NetBSD, for GDB.
- Copyright 2002 Free Software Foundation, Inc.
+/* Target-dependent code for NetBSD/sh.
+
+ Copyright (C) 2002, 2003, 2006, 2007, 2008 Free Software Foundation, Inc.
+
Contributed by Wasabi Systems, 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
+ 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,
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "gdbcore.h"
#include "regcache.h"
+#include "regset.h"
#include "value.h"
-#include "solib-svr4.h"
+#include "osabi.h"
+
+#include "gdb_assert.h"
+#include "gdb_string.h"
+#include "sh-tdep.h"
#include "shnbsd-tdep.h"
+#include "solib-svr4.h"
/* Convert an r0-r15 register number into an offset into a ptrace
register structure. */
( 5 * 4), /* r15 */
};
-#define SIZEOF_STRUCT_REG (21 * 4)
+/* Sizeof `struct reg' in <machine/reg.h>. */
+#define SHNBSD_SIZEOF_GREGS (21 * 4)
-void
-sh_nbsd_supply_registers (char *regs)
+/* Supply register REGNUM from the buffer specified by GREGS and LEN
+ in the general-purpose register set REGSET to register cache
+ REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
+
+static void
+shnbsd_supply_gregset (const struct regset *regset,
+ struct regcache *regcache,
+ int regnum, const void *gregs, size_t len)
{
- int regno;
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ const gdb_byte *regs = gregs;
+ int i;
- for (regno = R0_REGNUM; regno <= (R0_REGNUM + 15); regno++)
- supply_register (regno, regs + regmap[regno - R0_REGNUM]);
+ gdb_assert (len >= SHNBSD_SIZEOF_GREGS);
- supply_register (PC_REGNUM, regs + (0 * 4));
- supply_register (SR_REGNUM, regs + (1 * 4));
- supply_register (PR_REGNUM, regs + (2 * 4));
- supply_register (MACH_REGNUM, regs + (3 * 4));
- supply_register (MACL_REGNUM, regs + (4 * 4));
-}
+ if (regnum == gdbarch_pc_regnum (gdbarch) || regnum == -1)
+ regcache_raw_supply (regcache, gdbarch_pc_regnum (gdbarch),
+ regs + (0 * 4));
-void
-sh_nbsd_supply_register (char *regs, int regno)
-{
- if (regno == -1)
- sh_nbsd_supply_registers (regs);
-
- if (regno == PC_REGNUM)
- supply_register (PC_REGNUM, regs + (0 * 4));
- else if (regno == SR_REGNUM)
- supply_register (SR_REGNUM, regs + (1 * 4));
- else if (regno == PR_REGNUM)
- supply_register (PR_REGNUM, regs + (2 * 4));
- else if (regno == MACH_REGNUM)
- supply_register (MACH_REGNUM, regs + (3 * 4));
- else if (regno == MACL_REGNUM)
- supply_register (MACL_REGNUM, regs + (4 * 4));
- else if (regno >= R0_REGNUM && regno <= (R0_REGNUM + 15))
- supply_register (regno, regs + regmap[regno - R0_REGNUM]);
-}
+ if (regnum == SR_REGNUM || regnum == -1)
+ regcache_raw_supply (regcache, SR_REGNUM, regs + (1 * 4));
-void
-sh_nbsd_fill_registers (char *regs)
-{
- int regno;
+ if (regnum == PR_REGNUM || regnum == -1)
+ regcache_raw_supply (regcache, PR_REGNUM, regs + (2 * 4));
- for (regno = R0_REGNUM; regno <= (R0_REGNUM + 15); regno++)
- regcache_collect (regno, regs + regmap[regno - R0_REGNUM]);
+ if (regnum == MACH_REGNUM || regnum == -1)
+ regcache_raw_supply (regcache, MACH_REGNUM, regs + (3 * 4));
- regcache_collect (PC_REGNUM, regs + (0 * 4));
- regcache_collect (SR_REGNUM, regs + (1 * 4));
- regcache_collect (PR_REGNUM, regs + (2 * 4));
- regcache_collect (MACH_REGNUM, regs + (3 * 4));
- regcache_collect (MACL_REGNUM, regs + (4 * 4));
-}
+ if (regnum == MACL_REGNUM || regnum == -1)
+ regcache_raw_supply (regcache, MACL_REGNUM, regs + (4 * 4));
-void
-sh_nbsd_fill_register (char *regs, int regno)
-{
- if (regno == -1)
- sh_nbsd_fill_registers (regs);
-
- if (regno == PC_REGNUM)
- regcache_collect (PC_REGNUM, regs + (0 * 4));
- else if (regno == SR_REGNUM)
- regcache_collect (SR_REGNUM, regs + (1 * 4));
- else if (regno == PR_REGNUM)
- regcache_collect (PR_REGNUM, regs + (2 * 4));
- else if (regno == MACH_REGNUM)
- regcache_collect (MACH_REGNUM, regs + (3 * 4));
- else if (regno == MACL_REGNUM)
- regcache_collect (MACL_REGNUM, regs + (4 * 4));
- else if (regno >= R0_REGNUM && regno <= (R0_REGNUM + 15))
- regcache_collect (regno, regs + regmap[regno - R0_REGNUM]);
+ for (i = R0_REGNUM; i <= (R0_REGNUM + 15); i++)
+ {
+ if (regnum == i || regnum == -1)
+ regcache_raw_supply (regcache, i, regs + regmap[i - R0_REGNUM]);
+ }
}
-/* Fetch (and possibly build) an appropriate link_map_offsets
- structure for NetBSD/sh targets using the struct offsets
- defined in <link.h> (but without actual reference to that file).
+/* Collect register REGNUM in the general-purpose register set
+ REGSET. from register cache REGCACHE into the buffer specified by
+ GREGS and LEN. If REGNUM is -1, do this for all registers in
+ REGSET. */
- This makes it possible to access NetBSD/sh shared libraries
- from a GDB that was not built on a NetBSD/sh host (for cross
- debugging). */
-
-static struct link_map_offsets *
-sh_nbsd_solib_svr4_fetch_link_map_offsets (void)
+static void
+shnbsd_collect_gregset (const struct regset *regset,
+ const struct regcache *regcache,
+ int regnum, void *gregs, size_t len)
{
- static struct link_map_offsets lmo;
- static struct link_map_offsets *lmp = NULL;
-
- if (lmp == NULL)
- {
- lmp = &lmo;
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ gdb_byte *regs = gregs;
+ int i;
- lmo.r_debug_size = 16;
+ gdb_assert (len >= SHNBSD_SIZEOF_GREGS);
- lmo.r_map_offset = 4;
- lmo.r_map_size = 4;
+ if (regnum == gdbarch_pc_regnum (gdbarch) || regnum == -1)
+ regcache_raw_collect (regcache, gdbarch_pc_regnum (gdbarch),
+ regs + (0 * 4));
- lmo.link_map_size = 20;
+ if (regnum == SR_REGNUM || regnum == -1)
+ regcache_raw_collect (regcache, SR_REGNUM, regs + (1 * 4));
- lmo.l_addr_offset = 0;
- lmo.l_addr_size = 4;
+ if (regnum == PR_REGNUM || regnum == -1)
+ regcache_raw_collect (regcache, PR_REGNUM, regs + (2 * 4));
- lmo.l_name_offset = 4;
- lmo.l_name_size = 4;
+ if (regnum == MACH_REGNUM || regnum == -1)
+ regcache_raw_collect (regcache, MACH_REGNUM, regs + (3 * 4));
- lmo.l_next_offset = 12;
- lmo.l_next_size = 4;
+ if (regnum == MACL_REGNUM || regnum == -1)
+ regcache_raw_collect (regcache, MACL_REGNUM, regs + (4 * 4));
- lmo.l_prev_offset = 16;
- lmo.l_prev_size = 4;
+ for (i = R0_REGNUM; i <= (R0_REGNUM + 15); i++)
+ {
+ if (regnum == i || regnum == -1)
+ regcache_raw_collect (regcache, i, regs + regmap[i - R0_REGNUM]);
}
-
- return lmp;
}
-static void
-fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
- int which, CORE_ADDR ignore)
-{
- /* We get everything from the .reg section. */
- if (which != 0)
- return;
+/* SH register sets. */
- if (core_reg_size < SIZEOF_STRUCT_REG)
- {
- warning ("Wrong size register set in core file.");
- return;
- }
+static struct regset shnbsd_gregset =
+{
+ NULL,
+ shnbsd_supply_gregset,
+ shnbsd_collect_gregset
+};
- /* Integer registers. */
- sh_nbsd_supply_registers (core_reg_sect);
-}
+/* Return the appropriate register set for the core section identified
+ by SECT_NAME and SECT_SIZE. */
-static void
-fetch_elfcore_registers (char *core_reg_sect, unsigned core_reg_size,
- int which, CORE_ADDR ignore)
+const struct regset *
+shnbsd_regset_from_core_section (struct gdbarch *gdbarch,
+ const char *sect_name, size_t sect_size)
{
- switch (which)
- {
- case 0: /* Integer registers. */
- if (core_reg_size != SIZEOF_STRUCT_REG)
- warning ("Wrong size register set in core file.");
- else
- sh_nbsd_supply_registers (core_reg_sect);
- break;
-
- default:
- /* Don't know what kind of register request this is; just ignore it. */
- break;
- }
+ if (strcmp (sect_name, ".reg") == 0 && sect_size >= SHNBSD_SIZEOF_GREGS)
+ return &shnbsd_gregset;
+
+ return NULL;
}
-static struct core_fns sh_nbsd_core_fns =
+void
+shnbsd_supply_reg (struct regcache *regcache, const char *regs, int regnum)
{
- bfd_target_unknown_flavour, /* core_flavour */
- default_check_format, /* check_format */
- default_core_sniffer, /* core_sniffer */
- fetch_core_registers, /* core_read_registers */
- NULL /* next */
-};
+ shnbsd_supply_gregset (&shnbsd_gregset, regcache, regnum,
+ regs, SHNBSD_SIZEOF_GREGS);
+}
-static struct core_fns sh_nbsd_elfcore_fns =
+void
+shnbsd_fill_reg (const struct regcache *regcache, char *regs, int regnum)
{
- bfd_target_elf_flavour, /* core_flavour */
- default_check_format, /* check_format */
- default_core_sniffer, /* core_sniffer */
- fetch_elfcore_registers, /* core_read_registers */
- NULL /* next */
-};
+ shnbsd_collect_gregset (&shnbsd_gregset, regcache, regnum,
+ regs, SHNBSD_SIZEOF_GREGS);
+}
+\f
static void
-sh_nbsd_init_abi (struct gdbarch_info info,
+shnbsd_init_abi (struct gdbarch_info info,
struct gdbarch *gdbarch)
{
- set_solib_svr4_fetch_link_map_offsets (gdbarch,
- sh_nbsd_solib_svr4_fetch_link_map_offsets);
+ set_gdbarch_regset_from_core_section
+ (gdbarch, shnbsd_regset_from_core_section);
+
+ set_solib_svr4_fetch_link_map_offsets
+ (gdbarch, svr4_ilp32_fetch_link_map_offsets);
+}
+\f
+
+/* OpenBSD uses uses the traditional NetBSD core file format, even for
+ ports that use ELF. */
+#define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF
+
+static enum gdb_osabi
+shnbsd_core_osabi_sniffer (bfd *abfd)
+{
+ if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
+ return GDB_OSABI_NETBSD_CORE;
+
+ return GDB_OSABI_UNKNOWN;
}
void
-_initialize_sh_nbsd_tdep (void)
+_initialize_shnbsd_tdep (void)
{
- add_core_fns (&sh_nbsd_core_fns);
- add_core_fns (&sh_nbsd_elfcore_fns);
-
- sh_gdbarch_register_os_abi (SH_OSABI_NETBSD_ELF, sh_nbsd_init_abi);
+ /* BFD doesn't set a flavour for NetBSD style a.out core files. */
+ gdbarch_register_osabi_sniffer (bfd_arch_sh, bfd_target_unknown_flavour,
+ shnbsd_core_osabi_sniffer);
+
+ gdbarch_register_osabi (bfd_arch_sh, 0, GDB_OSABI_NETBSD_ELF,
+ shnbsd_init_abi);
+ gdbarch_register_osabi (bfd_arch_sh, 0, GDB_OSABI_OPENBSD_ELF,
+ shnbsd_init_abi);
}
projects / deliverable / binutils-gdb.git / blobdiff