X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Famd64bsd-nat.c;h=66d42894bd41222a38e59caf8cb897ddfc9bc004;hb=b08b78e7d4bb56f395d3212eed6184ede236c760;hp=96d535a7af4ec29424e1e0ea702e55d7b66a2ffc;hpb=90f90721e35051971f4b5a0305373f2eb5db5e56;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/amd64bsd-nat.c b/gdb/amd64bsd-nat.c index 96d535a7af..66d42894bd 100644 --- a/gdb/amd64bsd-nat.c +++ b/gdb/amd64bsd-nat.c @@ -1,12 +1,12 @@ /* Native-dependent code for AMD64 BSD's. - Copyright 2003 Free Software Foundation, Inc. + Copyright (C) 2003-2015 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 + 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, @@ -15,93 +15,221 @@ 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ + along with this program. If not, see . */ #include "defs.h" #include "inferior.h" #include "regcache.h" +#include "target.h" /* We include to make sure `struct fxsave64' is defined on NetBSD, since NetBSD's needs it. */ -#include "gdb_assert.h" #include #include #include #include -#include "x86-64-tdep.h" +#include "amd64-tdep.h" #include "amd64-nat.h" +#include "amd64bsd-nat.h" +#include "inf-ptrace.h" +#ifdef PT_GETXSTATE_INFO +size_t amd64bsd_xsave_len; +#endif + /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this for all registers (including the floating-point registers). */ -void -fetch_inferior_registers (int regnum) +static void +amd64bsd_fetch_inferior_registers (struct target_ops *ops, + struct regcache *regcache, int regnum) { - if (regnum == -1 || amd64_native_gregset_supplies_p (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, PIDGET (inferior_ptid), - (PTRACE_ARG3_TYPE) ®s, 0) == -1) - perror_with_name ("Couldn't get registers"); + if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't get registers")); - amd64_supply_native_gregset (current_regcache, ®s, -1); + amd64_supply_native_gregset (regcache, ®s, -1); if (regnum != -1) return; } - if (regnum == -1 || regnum >= AMD64_ST0_REGNUM) + if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) { struct fpreg fpregs; - - if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), - (PTRACE_ARG3_TYPE) &fpregs, 0) == -1) - perror_with_name ("Couldn't get floating point status"); - - amd64_supply_fxsave (current_regcache, -1, &fpregs); +#ifdef PT_GETXSTATE_INFO + char *xstateregs; + + if (amd64bsd_xsave_len != 0) + { + xstateregs = alloca (amd64bsd_xsave_len); + if (ptrace (PT_GETXSTATE, ptid_get_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, ptid_get_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). */ -void -store_inferior_registers (int regnum) +static void +amd64bsd_store_inferior_registers (struct target_ops *ops, + struct regcache *regcache, int regnum) { - if (regnum == -1 || amd64_native_gregset_supplies_p (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, PIDGET (inferior_ptid), - (PTRACE_ARG3_TYPE) ®s, 0) == -1) - perror_with_name ("Couldn't get registers"); + if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't get registers")); - amd64_collect_native_gregset (current_regcache, ®s, regnum); + amd64_collect_native_gregset (regcache, ®s, regnum); - if (ptrace (PT_SETREGS, PIDGET (inferior_ptid), - (PTRACE_ARG3_TYPE) ®s, 0) == -1) - perror_with_name ("Couldn't write registers"); + if (ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't write registers")); if (regnum != -1) return; } - if (regnum == -1 || regnum >= AMD64_ST0_REGNUM) + if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) { struct fpreg fpregs; +#ifdef PT_GETXSTATE_INFO + char *xstateregs; + + if (amd64bsd_xsave_len != 0) + { + xstateregs = alloca (amd64bsd_xsave_len); + if (ptrace (PT_GETXSTATE, ptid_get_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, ptid_get_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) xstateregs, amd64bsd_xsave_len) == -1) + perror_with_name (_("Couldn't write extended state status")); + return; + } +#endif + + if (ptrace (PT_GETFPREGS, ptid_get_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, ptid_get_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) + perror_with_name (_("Couldn't write floating point status")); + } +} - if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), - (PTRACE_ARG3_TYPE) &fpregs, 0) == -1) - perror_with_name ("Couldn't get floating point status"); +/* Create a prototype *BSD/amd64 target. The client can override it + with local methods. */ - amd64_fill_fxsave ((char *) &fpregs, regnum); +struct target_ops * +amd64bsd_target (void) +{ + struct target_ops *t; - if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid), - (PTRACE_ARG3_TYPE) &fpregs, 0) == -1) - perror_with_name ("Couldn't write floating point status"); - } + t = inf_ptrace_target (); + t->to_fetch_registers = amd64bsd_fetch_inferior_registers; + t->to_store_registers = amd64bsd_store_inferior_registers; + return t; } + + +/* Support for debug registers. */ + +#ifdef HAVE_PT_GETDBREGS + +static unsigned long +amd64bsd_dr_get (ptid_t ptid, int regnum) +{ + struct dbreg dbregs; + + if (ptrace (PT_GETDBREGS, ptid_get_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) &dbregs, 0) == -1) + perror_with_name (_("Couldn't read debug registers")); + + return DBREG_DRX ((&dbregs), regnum); +} + +static void +amd64bsd_dr_set (int regnum, unsigned long value) +{ + struct dbreg dbregs; + + if (ptrace (PT_GETDBREGS, ptid_get_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) &dbregs, 0) == -1) + perror_with_name (_("Couldn't get debug registers")); + + /* For some mysterious reason, some of the reserved bits in the + debug control register get set. Mask these off, otherwise the + ptrace call below will fail. */ + DBREG_DRX ((&dbregs), 7) &= ~(0xffffffff0000fc00); + + DBREG_DRX ((&dbregs), regnum) = value; + + if (ptrace (PT_SETDBREGS, ptid_get_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) &dbregs, 0) == -1) + perror_with_name (_("Couldn't write debug registers")); +} + +void +amd64bsd_dr_set_control (unsigned long control) +{ + amd64bsd_dr_set (7, control); +} + +void +amd64bsd_dr_set_addr (int regnum, CORE_ADDR addr) +{ + gdb_assert (regnum >= 0 && regnum <= 4); + + amd64bsd_dr_set (regnum, addr); +} + +CORE_ADDR +amd64bsd_dr_get_addr (int regnum) +{ + return amd64bsd_dr_get (inferior_ptid, regnum); +} + +unsigned long +amd64bsd_dr_get_status (void) +{ + return amd64bsd_dr_get (inferior_ptid, 6); +} + +unsigned long +amd64bsd_dr_get_control (void) +{ + return amd64bsd_dr_get (inferior_ptid, 7); +} + +#endif /* PT_GETDBREGS */