diff options
Diffstat (limited to 'gdb/arm-none-tdep.c')
| -rw-r--r-- | gdb/arm-none-tdep.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/gdb/arm-none-tdep.c b/gdb/arm-none-tdep.c new file mode 100644 index 00000000000..c355feff2fb --- /dev/null +++ b/gdb/arm-none-tdep.c @@ -0,0 +1,184 @@ +/* none on ARM target support. + + Copyright (C) 2020 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 "target.h" +#include "value.h" +#include "gdbtypes.h" +#include "gdbcore.h" +#include "frame.h" +#include "regcache.h" +#include "solib-svr4.h" +#include "osabi.h" +#include "regset.h" +#include "trad-frame.h" +#include "tramp-frame.h" +#include "breakpoint.h" +#include "auxv.h" + +#include "aarch32-tdep.h" +#include "arch/arm.h" +#include "arm-tdep.h" +#include "arm-none-tdep.h" +#include "glibc-tdep.h" +#include "arch-utils.h" +#include "inferior.h" +#include "gdbthread.h" +#include "symfile.h" + +#include "cli/cli-utils.h" +#include "stap-probe.h" +#include "parser-defs.h" +#include "user-regs.h" +#include <ctype.h> + +#include "elf-bfd.h" +#include "coff/internal.h" +#include "elf/arm.h" +#include "elf/common.h" + +/* The ARM none register setup is based on the ARM GNU/Linux design. */ + +static void +arm_none_supply_gregset (const struct regset *regset, + struct regcache *regcache, + int regnum, const void *gregs_buf, size_t len) +{ + struct gdbarch *gdbarch = regcache->arch (); + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + const gdb_byte *gregs = (const gdb_byte *) gregs_buf; + int regno; + CORE_ADDR reg_pc; + gdb_byte pc_buf[ARM_INT_REGISTER_SIZE]; + + for (regno = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++) + if (regnum == -1 || regnum == regno) + regcache->raw_supply (regno, gregs + ARM_INT_REGISTER_SIZE * regno); + + if (regnum == ARM_PS_REGNUM || regnum == -1) + { + if (arm_apcs_32) + regcache->raw_supply (ARM_PS_REGNUM, + gregs + ARM_INT_REGISTER_SIZE * ARM_NONE_CPSR_GREGNUM); + else + regcache->raw_supply (ARM_PS_REGNUM, + gregs + ARM_INT_REGISTER_SIZE * ARM_PC_REGNUM); + } + + if (regnum == ARM_PC_REGNUM || regnum == -1) + { + reg_pc = extract_unsigned_integer ( + gregs + ARM_INT_REGISTER_SIZE * ARM_PC_REGNUM, + ARM_INT_REGISTER_SIZE, byte_order); + reg_pc = gdbarch_addr_bits_remove (gdbarch, reg_pc); + store_unsigned_integer (pc_buf, ARM_INT_REGISTER_SIZE, byte_order, + reg_pc); + regcache->raw_supply (ARM_PC_REGNUM, pc_buf); + } +} + +static void +arm_none_collect_gregset (const struct regset *regset, + const struct regcache *regcache, + int regnum, void *gregs_buf, size_t len) +{ + gdb_byte *gregs = (gdb_byte *) gregs_buf; + int regno; + + for (regno = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++) + if (regnum == -1 || regnum == regno) + regcache->raw_collect (regno, + gregs + ARM_INT_REGISTER_SIZE * regno); + + if (regnum == ARM_PS_REGNUM || regnum == -1) + { + if (arm_apcs_32) + regcache->raw_collect (ARM_PS_REGNUM, + gregs + ARM_INT_REGISTER_SIZE * ARM_NONE_CPSR_GREGNUM); + else + regcache->raw_collect (ARM_PS_REGNUM, + gregs + ARM_INT_REGISTER_SIZE * ARM_PC_REGNUM); + } + + if (regnum == ARM_PC_REGNUM || regnum == -1) + regcache->raw_collect (ARM_PC_REGNUM, + gregs + ARM_INT_REGISTER_SIZE * ARM_PC_REGNUM); +} + +/* Support VFP register format. */ + +static void +arm_none_supply_vfp (const struct regset *regset, + struct regcache *regcache, + int regnum, const void *regs_buf, size_t len) +{ + const gdb_byte *regs = (const gdb_byte *) regs_buf; + int regno; + + if (regnum == ARM_FPSCR_REGNUM || regnum == -1) + regcache->raw_supply (ARM_FPSCR_REGNUM, regs + 32 * 8); + + for (regno = ARM_D0_REGNUM; regno <= ARM_D31_REGNUM; regno++) + if (regnum == -1 || regnum == regno) + regcache->raw_supply (regno, regs + (regno - ARM_D0_REGNUM) * 8); +} + +static void +arm_none_collect_vfp (const struct regset *regset, + const struct regcache *regcache, + int regnum, void *regs_buf, size_t len) +{ + gdb_byte *regs = (gdb_byte *) regs_buf; + int regno; + + if (regnum == ARM_FPSCR_REGNUM || regnum == -1) + regcache->raw_collect (ARM_FPSCR_REGNUM, regs + 32 * 8); + + for (regno = ARM_D0_REGNUM; regno <= ARM_D31_REGNUM; regno++) + if (regnum == -1 || regnum == regno) + regcache->raw_collect (regno, regs + (regno - ARM_D0_REGNUM) * 8); +} + +static const struct regset arm_none_gregset = + { + nullptr, arm_none_supply_gregset, arm_none_collect_gregset + }; + +static const struct regset arm_none_vfpregset = + { + nullptr, arm_none_supply_vfp, arm_none_collect_vfp + }; + +/* Iterate over core file register note sections. */ + +void +arm_none_iterate_over_regset_sections (struct gdbarch *gdbarch, + iterate_over_regset_sections_cb *cb, + void *cb_data, + const struct regcache *regcache) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + + cb (".reg", ARM_NONE_SIZEOF_GREGSET, ARM_NONE_SIZEOF_GREGSET, + &arm_none_gregset, nullptr, cb_data); + + if (tdep->vfp_register_count > 0) + cb (".reg-arm-vfp", ARM_NONE_SIZEOF_VFP, ARM_NONE_SIZEOF_VFP, + &arm_none_vfpregset, "VFP floating-point", cb_data); +} |