| /* Target-dependent code for ARM BSD's. |
| |
| Copyright (C) 2006-2021 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "defs.h" |
| #include "osabi.h" |
| #include "regcache.h" |
| #include "regset.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) |
| |
| static 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 = (const gdb_byte *) 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 (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 = (const gdb_byte *) 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 (i, regs + i * 4); |
| } |
| |
| if (regnum == ARM_PS_REGNUM || regnum == -1) |
| regcache->raw_supply (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 const struct regset armbsd_gregset = |
| { |
| NULL, |
| armbsd_supply_gregset, |
| NULL, |
| REGSET_VARIABLE_SIZE |
| }; |
| |
| static const struct regset armbsd_fpregset = |
| { |
| NULL, |
| armbsd_supply_fpregset |
| }; |
| |
| /* Iterate over supported core file register note sections. */ |
| |
| void |
| armbsd_iterate_over_regset_sections (struct gdbarch *gdbarch, |
| iterate_over_regset_sections_cb *cb, |
| void *cb_data, |
| const struct regcache *regcache) |
| { |
| cb (".reg", ARMBSD_SIZEOF_GREGS, ARMBSD_SIZEOF_GREGS, &armbsd_gregset, NULL, |
| cb_data); |
| cb (".reg2", ARMBSD_SIZEOF_FPREGS, ARMBSD_SIZEOF_FPREGS, &armbsd_fpregset, |
| NULL, cb_data); |
| } |