diff options
Diffstat (limited to 'gdb/armbsd-tdep.c')
-rw-r--r-- | gdb/armbsd-tdep.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/gdb/armbsd-tdep.c b/gdb/armbsd-tdep.c new file mode 100644 index 0000000..95ecd42 --- /dev/null +++ b/gdb/armbsd-tdep.c @@ -0,0 +1,129 @@ +/* Target-dependent code for ARM BSD's. + + Copyright (C) 2006 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., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. */ + +#include "defs.h" +#include "osabi.h" +#include "regcache.h" +#include "regset.h" + +#include "gdb_assert.h" +#include "gdb_string.h" + +#include "arm-tdep.h" + +/* Core file support. */ + +/* Sizeof `struct reg' in <machine/reg.h>. */ +#define ARMBSD_SIZEOF_GREGS (17 * 4) + +/* Sizeof `struct fpreg' in <machine/reg.h. */ +#define ARMBSD_SIZEOF_FPREGS ((1 + (8 * 3)) * 4) + +int +armbsd_fpreg_offset (int regnum) +{ + if (regnum == ARM_FPS_REGNUM) + return 0; + + return 4 + (regnum - ARM_F0_REGNUM) * 12; +} + +/* Supply register REGNUM from the buffer specified by FPREGS and LEN + in the floating-point register set REGSET to register cache + REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ + +static void +armbsd_supply_fpregset (const struct regset *regset, + struct regcache *regcache, + int regnum, const void *fpregs, size_t len) +{ + const gdb_byte *regs = fpregs; + int i; + + gdb_assert (len >= ARMBSD_SIZEOF_FPREGS); + + for (i = ARM_F0_REGNUM; i <= ARM_FPS_REGNUM; i++) + { + if (regnum == i || regnum == -1) + regcache_raw_supply (regcache, i, regs + armbsd_fpreg_offset (i)); + } +} + +/* 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 +armbsd_supply_gregset (const struct regset *regset, + struct regcache *regcache, + int regnum, const void *gregs, size_t len) +{ + const gdb_byte *regs = gregs; + int i; + + gdb_assert (len >= ARMBSD_SIZEOF_GREGS); + + for (i = ARM_A1_REGNUM; i <= ARM_PC_REGNUM; i++) + { + if (regnum == i || regnum == -1) + regcache_raw_supply (regcache, i, regs + i * 4); + } + + if (regnum == ARM_PS_REGNUM || regnum == -1) + regcache_raw_supply (regcache, i, regs + 16 * 4); + + if (len >= ARMBSD_SIZEOF_GREGS + ARMBSD_SIZEOF_FPREGS) + { + regs += ARMBSD_SIZEOF_GREGS; + len -= ARMBSD_SIZEOF_GREGS; + armbsd_supply_fpregset (regset, regcache, regnum, regs, len); + } +} + +/* ARM register sets. */ + +static struct regset armbsd_gregset = +{ + NULL, + armbsd_supply_gregset +}; + +static struct regset armbsd_fpregset = +{ + NULL, + armbsd_supply_fpregset +}; + +/* Return the appropriate register set for the core section identified + by SECT_NAME and SECT_SIZE. */ + +const struct regset * +armbsd_regset_from_core_section (struct gdbarch *gdbarch, + const char *sect_name, size_t sect_size) +{ + if (strcmp (sect_name, ".reg") == 0 && sect_size >= ARMBSD_SIZEOF_GREGS) + return &armbsd_gregset; + + if (strcmp (sect_name, ".reg2") == 0 && sect_size >= ARMBSD_SIZEOF_FPREGS) + return &armbsd_fpregset; + + return NULL; +} |