diff options
Diffstat (limited to 'gdb/amd64-bsd-nat.c')
| -rw-r--r-- | gdb/amd64-bsd-nat.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/gdb/amd64-bsd-nat.c b/gdb/amd64-bsd-nat.c new file mode 100644 index 0000000..4e6995c --- /dev/null +++ b/gdb/amd64-bsd-nat.c @@ -0,0 +1,159 @@ +/* Native-dependent code for AMD64 BSD's. + + Copyright (C) 2003-2016 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 "inferior.h" +#include "regcache.h" +#include "target.h" + +/* We include <signal.h> to make sure `struct fxsave64' is defined on + NetBSD, since NetBSD's <machine/reg.h> needs it. */ +#include <signal.h> +#include <sys/types.h> +#include <sys/ptrace.h> +#include <machine/reg.h> + +#include "amd64-tdep.h" +#include "amd64-nat.h" +#include "x86-bsd-nat.h" +#include "inf-ptrace.h" + + +/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this + for all registers (including the floating-point registers). */ + +static void +amd64bsd_fetch_inferior_registers (struct target_ops *ops, + struct regcache *regcache, int regnum) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + + if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) + { + struct reg regs; + + if (ptrace (PT_GETREGS, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't get registers")); + + amd64_supply_native_gregset (regcache, ®s, -1); + if (regnum != -1) + return; + } + + if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) + { + struct fpreg fpregs; +#ifdef PT_GETXSTATE_INFO + void *xstateregs; + + if (x86bsd_xsave_len != 0) + { + xstateregs = alloca (x86bsd_xsave_len); + if (ptrace (PT_GETXSTATE, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) xstateregs, 0) == -1) + perror_with_name (_("Couldn't get extended state status")); + + amd64_supply_xsave (regcache, -1, xstateregs); + return; + } +#endif + + if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) + perror_with_name (_("Couldn't get floating point status")); + + amd64_supply_fxsave (regcache, -1, &fpregs); + } +} + +/* Store register REGNUM back into the inferior. If REGNUM is -1, do + this for all registers (including the floating-point registers). */ + +static void +amd64bsd_store_inferior_registers (struct target_ops *ops, + struct regcache *regcache, int regnum) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + + if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) + { + struct reg regs; + + if (ptrace (PT_GETREGS, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't get registers")); + + amd64_collect_native_gregset (regcache, ®s, regnum); + + if (ptrace (PT_SETREGS, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't write registers")); + + if (regnum != -1) + return; + } + + if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) + { + struct fpreg fpregs; +#ifdef PT_GETXSTATE_INFO + void *xstateregs; + + if (x86bsd_xsave_len != 0) + { + xstateregs = alloca (x86bsd_xsave_len); + if (ptrace (PT_GETXSTATE, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) xstateregs, 0) == -1) + perror_with_name (_("Couldn't get extended state status")); + + amd64_collect_xsave (regcache, regnum, xstateregs, 0); + + if (ptrace (PT_SETXSTATE, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) xstateregs, x86bsd_xsave_len) == -1) + perror_with_name (_("Couldn't write extended state status")); + return; + } +#endif + + if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) + perror_with_name (_("Couldn't get floating point status")); + + amd64_collect_fxsave (regcache, regnum, &fpregs); + + if (ptrace (PT_SETFPREGS, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) + perror_with_name (_("Couldn't write floating point status")); + } +} + +/* Create a prototype *BSD/amd64 target. The client can override it + with local methods. */ + +struct target_ops * +amd64bsd_target (void) +{ + struct target_ops *t; + + t = x86bsd_target (); + t->to_fetch_registers = amd64bsd_fetch_inferior_registers; + t->to_store_registers = amd64bsd_store_inferior_registers; + return t; +} |