From: John Baldwin Date: Wed, 11 Oct 2017 18:16:34 +0000 (-0700) Subject: Add native target for FreeBSD/arm. X-Git-Url: http://git.efficios.com/?a=commitdiff_plain;h=4f9d99066edcefab0e5868d20cb9ddaa7b76da52;p=deliverable%2Fbinutils-gdb.git Add native target for FreeBSD/arm. gdb/ChangeLog: * Makefile.in (ALLDEPFILES): Add arm-fbsd-nat.c. * NEWS: Mention new FreeBSD/arm native configuration. * configure.host: Add arm*-*-freebsd*. * configure.nat: Likewise. * arm-fbsd-nat.c: New file. --- diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 6155c58748..375c06b13f 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,11 @@ +2017-10-11 John Baldwin + + * Makefile.in (ALLDEPFILES): Add arm-fbsd-nat.c. + * NEWS: Mention new FreeBSD/arm native configuration. + * configure.host: Add arm*-*-freebsd*. + * configure.nat: Likewise. + * arm-fbsd-nat.c: New file. + 2017-10-11 John Baldwin * Makefile.in (ALL_TARGET_OBS): Add arm-fbsd-tdep.o. diff --git a/gdb/Makefile.in b/gdb/Makefile.in index 94461e2b1f..0f1ba54f79 100644 --- a/gdb/Makefile.in +++ b/gdb/Makefile.in @@ -2542,6 +2542,7 @@ ALLDEPFILES = \ arc-tdep.c \ arm.c \ arm-bsd-tdep.c \ + arm-fbsd-nat.c \ arm-fbsd-tdep.c \ arm-get-next-pcs.c \ arm-linux.c \ diff --git a/gdb/NEWS b/gdb/NEWS index 642cfb7126..fbf5591781 100644 --- a/gdb/NEWS +++ b/gdb/NEWS @@ -126,6 +126,7 @@ starti * New native configurations FreeBSD/aarch64 aarch64*-*-freebsd* +FreeBSD/arm arm*-*-freebsd* * New targets diff --git a/gdb/arm-fbsd-nat.c b/gdb/arm-fbsd-nat.c new file mode 100644 index 0000000000..b1c5c360f8 --- /dev/null +++ b/gdb/arm-fbsd-nat.c @@ -0,0 +1,151 @@ +/* Native-dependent code for FreeBSD/arm. + + Copyright (C) 2017 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 . */ + +#include "defs.h" +#include "target.h" + +#include +#include +#include + +#include "fbsd-nat.h" +#include "arm-tdep.h" +#include "arm-fbsd-tdep.h" +#include "inf-ptrace.h" + +/* Determine if PT_GETREGS fetches REGNUM. */ + +static bool +getregs_supplies (struct gdbarch *gdbarch, int regnum) +{ + return ((regnum >= ARM_A1_REGNUM && regnum <= ARM_PC_REGNUM) + || regnum == ARM_PS_REGNUM); +} + +#ifdef PT_GETVFPREGS +/* Determine if PT_GETVFPREGS fetches REGNUM. */ + +static bool +getvfpregs_supplies (struct gdbarch *gdbarch, int regnum) +{ + return ((regnum >= ARM_D0_REGNUM && regnum <= ARM_D31_REGNUM) + || regnum == ARM_FPSCR_REGNUM); +} +#endif + +/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this + for all registers. */ + +static void +arm_fbsd_fetch_inferior_registers (struct target_ops *ops, + struct regcache *regcache, int regnum) +{ + pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache)); + + struct gdbarch *gdbarch = get_regcache_arch (regcache); + if (regnum == -1 || getregs_supplies (gdbarch, regnum)) + { + struct reg regs; + + if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't get registers")); + + regcache->supply_regset (&arm_fbsd_gregset, regnum, ®s, + sizeof (regs)); + } + +#ifdef PT_GETVFPREGS + if (regnum == -1 || getvfpregs_supplies (gdbarch, regnum)) + { + struct vfpreg vfpregs; + + if (ptrace (PT_GETVFPREGS, pid, (PTRACE_TYPE_ARG3) &vfpregs, 0) == -1) + perror_with_name (_("Couldn't get floating point status")); + + regcache->supply_regset (&arm_fbsd_vfpregset, regnum, &vfpregs, + sizeof (vfpregs)); + } +#endif +} + +/* Store register REGNUM back into the inferior. If REGNUM is -1, do + this for all registers. */ + +static void +arm_fbsd_store_inferior_registers (struct target_ops *ops, + struct regcache *regcache, int regnum) +{ + pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache)); + + struct gdbarch *gdbarch = get_regcache_arch (regcache); + if (regnum == -1 || getregs_supplies (gdbarch, regnum)) + { + struct reg regs; + + if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't get registers")); + + regcache->collect_regset (&arm_fbsd_gregset, regnum, ®s, + sizeof (regs)); + + if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't write registers")); + } + +#ifdef PT_GETVFPREGS + if (regnum == -1 || getvfpregs_supplies (gdbarch, regnum)) + { + struct vfpreg vfpregs; + + if (ptrace (PT_GETVFPREGS, pid, (PTRACE_TYPE_ARG3) &vfpregs, 0) == -1) + perror_with_name (_("Couldn't get floating point status")); + + regcache->collect_regset (&arm_fbsd_vfpregset, regnum, &vfpregs, + sizeof (vfpregs)); + + if (ptrace (PT_SETVFPREGS, pid, (PTRACE_TYPE_ARG3) &vfpregs, 0) == -1) + perror_with_name (_("Couldn't write floating point status")); + } +#endif +} + +/* Implement the to_read_description method. */ + +static const struct target_desc * +arm_fbsd_read_description (struct target_ops *ops) +{ + const struct target_desc *desc; + + desc = arm_fbsd_read_description_auxv (ops); + if (desc == NULL) + desc = ops->beneath->to_read_description (ops->beneath); + return desc; +} + +void +_initialize_arm_fbsd_nat (void) +{ + struct target_ops *t; + + t = inf_ptrace_target (); + t->to_fetch_registers = arm_fbsd_fetch_inferior_registers; + t->to_store_registers = arm_fbsd_store_inferior_registers; + t->to_read_description = arm_fbsd_read_description; + fbsd_nat_add_target (t); +} diff --git a/gdb/configure.host b/gdb/configure.host index 911d9c1fe8..8e318343de 100644 --- a/gdb/configure.host +++ b/gdb/configure.host @@ -92,6 +92,7 @@ alpha*-*-netbsd* | alpha*-*-knetbsd*-gnu) gdb_host=nbsd ;; alpha*-*-openbsd*) gdb_host=nbsd ;; +arm*-*-freebsd*) gdb_host=fbsd ;; arm*-*-linux*) gdb_host=linux ;; arm*-*-netbsdelf* | arm*-*-knetbsd*-gnu) gdb_host=nbsdelf ;; diff --git a/gdb/configure.nat b/gdb/configure.nat index 3794663f3c..14a1b004dd 100644 --- a/gdb/configure.nat +++ b/gdb/configure.nat @@ -156,6 +156,11 @@ case ${gdb_host} in NATDEPFILES="${NATDEPFILES} aarch64-fbsd-nat.o" LOADLIBES= ;; + arm) + # Host: FreeBSD/arm + NATDEPFILES="${NATDEPFILES} arm-fbsd-nat.o" + LOADLIBES= + ;; i386) # Host: FreeBSD/i386 NATDEPFILES="${NATDEPFILES} x86-nat.o x86-dregs.o \