f962539ad2
When reading a core file register section which is larger than expected, emit a warning. Assume that a register section usually has exactly the size specified by the regset section iterator. In some special cases this assumption is wrong, or at least does not match the regset supply function's logic. Thus also add a way to suppress the warning in those cases, using a new flag REGSET_VARIABLE_SIZE. gdb/ChangeLog: * regset.h (struct regset): Add flags field. (REGSET_VARIABLE_SIZE): New value for a regset's flags field. * corelow.c (get_core_register_section): Add warning if the size exceeds the requested size and the regset does not have the REGSET_VARIABLE_SIZE flag set. * alphanbsd-tdep.c (alphanbsd_gregset): Add REGSET_VARIABLE_SIZE flag. * armbsd-tdep.c (armbsd_gregset): Likewise. * hppa-hpux-tdep.c (hppa_hpux_regset): Likewise. * hppaobsd-tdep.c (hppaobsd_gregset): Likewise. * m68kbsd-tdep.c (m68kbsd_gregset): Likewise. * mipsnbsd-tdep.c (mipsnbsd_gregset): Likewise.
122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
/* Target-dependent code for ARM BSD's.
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Copyright (C) 2006-2015 Free Software Foundation, Inc.
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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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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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(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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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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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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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "osabi.h"
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#include "regcache.h"
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#include "regset.h"
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#include "arm-tdep.h"
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/* Core file support. */
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/* Sizeof `struct reg' in <machine/reg.h>. */
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#define ARMBSD_SIZEOF_GREGS (17 * 4)
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/* Sizeof `struct fpreg' in <machine/reg.h. */
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#define ARMBSD_SIZEOF_FPREGS ((1 + (8 * 3)) * 4)
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static int
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armbsd_fpreg_offset (int regnum)
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{
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if (regnum == ARM_FPS_REGNUM)
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return 0;
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return 4 + (regnum - ARM_F0_REGNUM) * 12;
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}
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/* Supply register REGNUM from the buffer specified by FPREGS and LEN
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in the floating-point 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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static void
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armbsd_supply_fpregset (const struct regset *regset,
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struct regcache *regcache,
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int regnum, const void *fpregs, size_t len)
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{
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const gdb_byte *regs = fpregs;
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int i;
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gdb_assert (len >= ARMBSD_SIZEOF_FPREGS);
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for (i = ARM_F0_REGNUM; i <= ARM_FPS_REGNUM; i++)
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{
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if (regnum == i || regnum == -1)
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regcache_raw_supply (regcache, i, regs + armbsd_fpreg_offset (i));
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}
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}
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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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REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
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static void
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armbsd_supply_gregset (const struct regset *regset,
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struct regcache *regcache,
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int regnum, const void *gregs, size_t len)
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{
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const gdb_byte *regs = gregs;
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int i;
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gdb_assert (len >= ARMBSD_SIZEOF_GREGS);
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for (i = ARM_A1_REGNUM; i <= ARM_PC_REGNUM; i++)
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{
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if (regnum == i || regnum == -1)
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regcache_raw_supply (regcache, i, regs + i * 4);
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}
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if (regnum == ARM_PS_REGNUM || regnum == -1)
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regcache_raw_supply (regcache, i, regs + 16 * 4);
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if (len >= ARMBSD_SIZEOF_GREGS + ARMBSD_SIZEOF_FPREGS)
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{
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regs += ARMBSD_SIZEOF_GREGS;
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len -= ARMBSD_SIZEOF_GREGS;
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armbsd_supply_fpregset (regset, regcache, regnum, regs, len);
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}
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}
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/* ARM register sets. */
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static const struct regset armbsd_gregset =
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{
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NULL,
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armbsd_supply_gregset,
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NULL,
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REGSET_VARIABLE_SIZE
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};
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static const struct regset armbsd_fpregset =
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{
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NULL,
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armbsd_supply_fpregset
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};
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/* Iterate over supported core file register note sections. */
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void
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armbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
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iterate_over_regset_sections_cb *cb,
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void *cb_data,
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const struct regcache *regcache)
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{
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cb (".reg", ARMBSD_SIZEOF_GREGS, &armbsd_gregset, NULL, cb_data);
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cb (".reg2", ARMBSD_SIZEOF_FPREGS, &armbsd_fpregset, NULL, cb_data);
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}
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