| /* Low level Alpha GNU/Linux interface, for GDB when running native. |
| Copyright (C) 2005-2012 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 "regcache.h" |
| #include "linux-nat.h" |
| |
| #include "alpha-tdep.h" |
| |
| #include <sys/ptrace.h> |
| #include <alpha/ptrace.h> |
| |
| #include <sys/procfs.h> |
| #include "gregset.h" |
| |
| /* The address of UNIQUE for ptrace. */ |
| #define ALPHA_UNIQUE_PTRACE_ADDR 65 |
| |
| |
| /* See the comment in m68k-tdep.c regarding the utility of these |
| functions. */ |
| |
| void |
| supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp) |
| { |
| const long *regp = (const long *)gregsetp; |
| |
| /* PC is in slot 32, UNIQUE is in slot 33. */ |
| alpha_supply_int_regs (regcache, -1, regp, regp + 31, regp + 32); |
| } |
| |
| void |
| fill_gregset (const struct regcache *regcache, |
| gdb_gregset_t *gregsetp, int regno) |
| { |
| long *regp = (long *)gregsetp; |
| |
| /* PC is in slot 32, UNIQUE is in slot 33. */ |
| alpha_fill_int_regs (regcache, regno, regp, regp + 31, regp + 32); |
| } |
| |
| /* Now we do the same thing for floating-point registers. |
| Again, see the comments in m68k-tdep.c. */ |
| |
| void |
| supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp) |
| { |
| const long *regp = (const long *)fpregsetp; |
| |
| /* FPCR is in slot 32. */ |
| alpha_supply_fp_regs (regcache, -1, regp, regp + 31); |
| } |
| |
| void |
| fill_fpregset (const struct regcache *regcache, |
| gdb_fpregset_t *fpregsetp, int regno) |
| { |
| long *regp = (long *)fpregsetp; |
| |
| /* FPCR is in slot 32. */ |
| alpha_fill_fp_regs (regcache, regno, regp, regp + 31); |
| } |
| |
| |
| static CORE_ADDR |
| alpha_linux_register_u_offset (struct gdbarch *gdbarch, int regno, int store_p) |
| { |
| if (regno == gdbarch_pc_regnum (gdbarch)) |
| return PC; |
| if (regno == ALPHA_UNIQUE_REGNUM) |
| return ALPHA_UNIQUE_PTRACE_ADDR; |
| if (regno < gdbarch_fp0_regnum (gdbarch)) |
| return GPR_BASE + regno; |
| else |
| return FPR_BASE + regno - gdbarch_fp0_regnum (gdbarch); |
| } |
| |
| void _initialialize_alpha_linux_nat (void); |
| |
| void |
| _initialize_alpha_linux_nat (void) |
| { |
| linux_nat_add_target (linux_trad_target (alpha_linux_register_u_offset)); |
| } |