/* Target-dependent code for NetBSD/sh.
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/* Target-dependent code for NetBSD/sh.
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Copyright (C) 2002, 2003, 2006, 2007, 2008 Free Software Foundation, Inc.
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Copyright (C) 2002, 2003, 2006, 2007, 2008 Free Software Foundation, Inc.
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Contributed by Wasabi Systems, Inc.
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Contributed by Wasabi Systems, Inc.
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This file is part of GDB.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "defs.h"
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#include "gdbcore.h"
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#include "gdbcore.h"
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#include "regcache.h"
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#include "regcache.h"
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#include "regset.h"
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#include "regset.h"
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#include "value.h"
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#include "value.h"
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#include "osabi.h"
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#include "osabi.h"
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#include "gdb_assert.h"
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#include "gdb_assert.h"
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#include "gdb_string.h"
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#include "gdb_string.h"
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#include "sh-tdep.h"
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#include "sh-tdep.h"
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#include "shnbsd-tdep.h"
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#include "shnbsd-tdep.h"
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#include "solib-svr4.h"
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#include "solib-svr4.h"
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/* Convert an r0-r15 register number into an offset into a ptrace
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/* Convert an r0-r15 register number into an offset into a ptrace
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register structure. */
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register structure. */
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static const int regmap[] =
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static const int regmap[] =
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{
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{
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(20 * 4), /* r0 */
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(20 * 4), /* r0 */
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(19 * 4), /* r1 */
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(19 * 4), /* r1 */
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(18 * 4), /* r2 */
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(18 * 4), /* r2 */
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(17 * 4), /* r3 */
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(17 * 4), /* r3 */
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(16 * 4), /* r4 */
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(16 * 4), /* r4 */
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(15 * 4), /* r5 */
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(15 * 4), /* r5 */
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(14 * 4), /* r6 */
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(14 * 4), /* r6 */
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(13 * 4), /* r7 */
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(13 * 4), /* r7 */
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(12 * 4), /* r8 */
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(12 * 4), /* r8 */
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(11 * 4), /* r9 */
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(11 * 4), /* r9 */
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(10 * 4), /* r10 */
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(10 * 4), /* r10 */
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( 9 * 4), /* r11 */
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( 9 * 4), /* r11 */
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( 8 * 4), /* r12 */
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( 8 * 4), /* r12 */
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( 7 * 4), /* r13 */
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( 7 * 4), /* r13 */
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( 6 * 4), /* r14 */
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( 6 * 4), /* r14 */
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( 5 * 4), /* r15 */
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( 5 * 4), /* r15 */
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};
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};
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/* Sizeof `struct reg' in <machine/reg.h>. */
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/* Sizeof `struct reg' in <machine/reg.h>. */
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#define SHNBSD_SIZEOF_GREGS (21 * 4)
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#define SHNBSD_SIZEOF_GREGS (21 * 4)
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/* Supply register REGNUM from the buffer specified by GREGS and LEN
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/* Supply register REGNUM from the buffer specified by GREGS and LEN
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in the general-purpose register set REGSET to register cache
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in the general-purpose register set REGSET to register cache
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REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
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REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
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static void
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static void
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shnbsd_supply_gregset (const struct regset *regset,
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shnbsd_supply_gregset (const struct regset *regset,
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struct regcache *regcache,
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struct regcache *regcache,
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int regnum, const void *gregs, size_t len)
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int regnum, const void *gregs, size_t len)
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{
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{
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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const gdb_byte *regs = gregs;
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const gdb_byte *regs = gregs;
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int i;
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int i;
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gdb_assert (len >= SHNBSD_SIZEOF_GREGS);
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gdb_assert (len >= SHNBSD_SIZEOF_GREGS);
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if (regnum == gdbarch_pc_regnum (gdbarch) || regnum == -1)
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if (regnum == gdbarch_pc_regnum (gdbarch) || regnum == -1)
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regcache_raw_supply (regcache, gdbarch_pc_regnum (gdbarch),
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regcache_raw_supply (regcache, gdbarch_pc_regnum (gdbarch),
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regs + (0 * 4));
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regs + (0 * 4));
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if (regnum == SR_REGNUM || regnum == -1)
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if (regnum == SR_REGNUM || regnum == -1)
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regcache_raw_supply (regcache, SR_REGNUM, regs + (1 * 4));
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regcache_raw_supply (regcache, SR_REGNUM, regs + (1 * 4));
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if (regnum == PR_REGNUM || regnum == -1)
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if (regnum == PR_REGNUM || regnum == -1)
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regcache_raw_supply (regcache, PR_REGNUM, regs + (2 * 4));
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regcache_raw_supply (regcache, PR_REGNUM, regs + (2 * 4));
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if (regnum == MACH_REGNUM || regnum == -1)
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if (regnum == MACH_REGNUM || regnum == -1)
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regcache_raw_supply (regcache, MACH_REGNUM, regs + (3 * 4));
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regcache_raw_supply (regcache, MACH_REGNUM, regs + (3 * 4));
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if (regnum == MACL_REGNUM || regnum == -1)
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if (regnum == MACL_REGNUM || regnum == -1)
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regcache_raw_supply (regcache, MACL_REGNUM, regs + (4 * 4));
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regcache_raw_supply (regcache, MACL_REGNUM, regs + (4 * 4));
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for (i = R0_REGNUM; i <= (R0_REGNUM + 15); i++)
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for (i = R0_REGNUM; i <= (R0_REGNUM + 15); i++)
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{
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{
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if (regnum == i || regnum == -1)
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if (regnum == i || regnum == -1)
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regcache_raw_supply (regcache, i, regs + regmap[i - R0_REGNUM]);
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regcache_raw_supply (regcache, i, regs + regmap[i - R0_REGNUM]);
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}
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}
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}
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}
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/* Collect register REGNUM in the general-purpose register set
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/* Collect register REGNUM in the general-purpose register set
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REGSET. from register cache REGCACHE into the buffer specified by
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REGSET. from register cache REGCACHE into the buffer specified by
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GREGS and LEN. If REGNUM is -1, do this for all registers in
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GREGS and LEN. If REGNUM is -1, do this for all registers in
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REGSET. */
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REGSET. */
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static void
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static void
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shnbsd_collect_gregset (const struct regset *regset,
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shnbsd_collect_gregset (const struct regset *regset,
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const struct regcache *regcache,
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const struct regcache *regcache,
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int regnum, void *gregs, size_t len)
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int regnum, void *gregs, size_t len)
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{
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{
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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gdb_byte *regs = gregs;
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gdb_byte *regs = gregs;
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int i;
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int i;
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gdb_assert (len >= SHNBSD_SIZEOF_GREGS);
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gdb_assert (len >= SHNBSD_SIZEOF_GREGS);
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if (regnum == gdbarch_pc_regnum (gdbarch) || regnum == -1)
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if (regnum == gdbarch_pc_regnum (gdbarch) || regnum == -1)
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regcache_raw_collect (regcache, gdbarch_pc_regnum (gdbarch),
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regcache_raw_collect (regcache, gdbarch_pc_regnum (gdbarch),
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regs + (0 * 4));
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regs + (0 * 4));
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if (regnum == SR_REGNUM || regnum == -1)
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if (regnum == SR_REGNUM || regnum == -1)
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regcache_raw_collect (regcache, SR_REGNUM, regs + (1 * 4));
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regcache_raw_collect (regcache, SR_REGNUM, regs + (1 * 4));
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if (regnum == PR_REGNUM || regnum == -1)
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if (regnum == PR_REGNUM || regnum == -1)
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regcache_raw_collect (regcache, PR_REGNUM, regs + (2 * 4));
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regcache_raw_collect (regcache, PR_REGNUM, regs + (2 * 4));
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if (regnum == MACH_REGNUM || regnum == -1)
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if (regnum == MACH_REGNUM || regnum == -1)
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regcache_raw_collect (regcache, MACH_REGNUM, regs + (3 * 4));
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regcache_raw_collect (regcache, MACH_REGNUM, regs + (3 * 4));
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if (regnum == MACL_REGNUM || regnum == -1)
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if (regnum == MACL_REGNUM || regnum == -1)
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regcache_raw_collect (regcache, MACL_REGNUM, regs + (4 * 4));
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regcache_raw_collect (regcache, MACL_REGNUM, regs + (4 * 4));
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for (i = R0_REGNUM; i <= (R0_REGNUM + 15); i++)
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for (i = R0_REGNUM; i <= (R0_REGNUM + 15); i++)
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{
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{
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if (regnum == i || regnum == -1)
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if (regnum == i || regnum == -1)
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regcache_raw_collect (regcache, i, regs + regmap[i - R0_REGNUM]);
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regcache_raw_collect (regcache, i, regs + regmap[i - R0_REGNUM]);
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}
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}
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}
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}
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/* SH register sets. */
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/* SH register sets. */
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static struct regset shnbsd_gregset =
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static struct regset shnbsd_gregset =
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{
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{
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NULL,
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NULL,
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shnbsd_supply_gregset,
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shnbsd_supply_gregset,
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shnbsd_collect_gregset
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shnbsd_collect_gregset
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};
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};
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/* Return the appropriate register set for the core section identified
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/* Return the appropriate register set for the core section identified
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by SECT_NAME and SECT_SIZE. */
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by SECT_NAME and SECT_SIZE. */
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const struct regset *
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const struct regset *
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shnbsd_regset_from_core_section (struct gdbarch *gdbarch,
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shnbsd_regset_from_core_section (struct gdbarch *gdbarch,
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const char *sect_name, size_t sect_size)
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const char *sect_name, size_t sect_size)
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{
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{
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if (strcmp (sect_name, ".reg") == 0 && sect_size >= SHNBSD_SIZEOF_GREGS)
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if (strcmp (sect_name, ".reg") == 0 && sect_size >= SHNBSD_SIZEOF_GREGS)
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return &shnbsd_gregset;
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return &shnbsd_gregset;
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return NULL;
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return NULL;
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}
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}
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void
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void
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shnbsd_supply_reg (struct regcache *regcache, const char *regs, int regnum)
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shnbsd_supply_reg (struct regcache *regcache, const char *regs, int regnum)
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{
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{
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shnbsd_supply_gregset (&shnbsd_gregset, regcache, regnum,
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shnbsd_supply_gregset (&shnbsd_gregset, regcache, regnum,
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regs, SHNBSD_SIZEOF_GREGS);
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regs, SHNBSD_SIZEOF_GREGS);
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}
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}
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void
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void
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shnbsd_fill_reg (const struct regcache *regcache, char *regs, int regnum)
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shnbsd_fill_reg (const struct regcache *regcache, char *regs, int regnum)
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{
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{
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shnbsd_collect_gregset (&shnbsd_gregset, regcache, regnum,
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shnbsd_collect_gregset (&shnbsd_gregset, regcache, regnum,
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regs, SHNBSD_SIZEOF_GREGS);
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regs, SHNBSD_SIZEOF_GREGS);
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}
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}
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static void
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static void
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shnbsd_init_abi (struct gdbarch_info info,
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shnbsd_init_abi (struct gdbarch_info info,
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struct gdbarch *gdbarch)
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struct gdbarch *gdbarch)
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{
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{
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set_gdbarch_regset_from_core_section
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set_gdbarch_regset_from_core_section
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(gdbarch, shnbsd_regset_from_core_section);
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(gdbarch, shnbsd_regset_from_core_section);
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set_solib_svr4_fetch_link_map_offsets
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set_solib_svr4_fetch_link_map_offsets
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(gdbarch, svr4_ilp32_fetch_link_map_offsets);
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(gdbarch, svr4_ilp32_fetch_link_map_offsets);
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}
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}
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/* OpenBSD uses uses the traditional NetBSD core file format, even for
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/* OpenBSD uses uses the traditional NetBSD core file format, even for
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ports that use ELF. */
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ports that use ELF. */
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#define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF
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#define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF
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static enum gdb_osabi
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static enum gdb_osabi
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shnbsd_core_osabi_sniffer (bfd *abfd)
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shnbsd_core_osabi_sniffer (bfd *abfd)
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{
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{
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if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
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if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
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return GDB_OSABI_NETBSD_CORE;
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return GDB_OSABI_NETBSD_CORE;
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return GDB_OSABI_UNKNOWN;
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return GDB_OSABI_UNKNOWN;
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}
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}
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void
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void
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_initialize_shnbsd_tdep (void)
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_initialize_shnbsd_tdep (void)
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{
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{
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/* BFD doesn't set a flavour for NetBSD style a.out core files. */
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/* BFD doesn't set a flavour for NetBSD style a.out core files. */
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gdbarch_register_osabi_sniffer (bfd_arch_sh, bfd_target_unknown_flavour,
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gdbarch_register_osabi_sniffer (bfd_arch_sh, bfd_target_unknown_flavour,
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shnbsd_core_osabi_sniffer);
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shnbsd_core_osabi_sniffer);
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gdbarch_register_osabi (bfd_arch_sh, 0, GDB_OSABI_NETBSD_ELF,
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gdbarch_register_osabi (bfd_arch_sh, 0, GDB_OSABI_NETBSD_ELF,
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shnbsd_init_abi);
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shnbsd_init_abi);
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gdbarch_register_osabi (bfd_arch_sh, 0, GDB_OSABI_OPENBSD_ELF,
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gdbarch_register_osabi (bfd_arch_sh, 0, GDB_OSABI_OPENBSD_ELF,
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shnbsd_init_abi);
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shnbsd_init_abi);
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}
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}
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