From b268007c68ec2d4ebd7e1fa239f0444ff59620e2 Mon Sep 17 00:00:00 2001 From: John Baldwin Date: Wed, 4 Jan 2017 09:41:58 -0800 Subject: Add native target for FreeBSD/mips. This supports the o32 and n64 ABIs. gdb/ChangeLog: * Makefile.in (ALLDEPFILES): Add mips-fbsd-nat.c. * NEWS: Mention new FreeBSD/mips native configuration. * config/mips/fbsd.mh: New file. * configure.host: Add mips*-*-freebsd*. * mips-fbsd-nat.c: New file. --- gdb/ChangeLog | 8 +++ gdb/Makefile.in | 1 + gdb/NEWS | 5 ++ gdb/config/mips/fbsd.mh | 3 ++ gdb/configure.host | 1 + gdb/mips-fbsd-nat.c | 136 ++++++++++++++++++++++++++++++++++++++++++++++++ 6 files changed, 154 insertions(+) create mode 100644 gdb/config/mips/fbsd.mh create mode 100644 gdb/mips-fbsd-nat.c diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 263646f..119a9a0 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,13 @@ 2017-01-04 John Baldwin + * Makefile.in (ALLDEPFILES): Add mips-fbsd-nat.c. + * NEWS: Mention new FreeBSD/mips native configuration. + * config/mips/fbsd.mh: New file. + * configure.host: Add mips*-*-freebsd*. + * mips-fbsd-nat.c: New file. + +2017-01-04 John Baldwin + * Makefile.in (ALL_TARGET_OBS): Add mips-fbsd-tdep.o. (ALLDEPFILES): Add mips-fbsd-tdep.c. * NEWS: Mention new FreeBSD/mips target. diff --git a/gdb/Makefile.in b/gdb/Makefile.in index f20b973..f5f15c2 100644 --- a/gdb/Makefile.in +++ b/gdb/Makefile.in @@ -2541,6 +2541,7 @@ ALLDEPFILES = \ microblaze-linux-tdep.c \ microblaze-tdep.c \ mingw-hdep.c \ + mips-fbsd-nat.c \ mips-fbsd-tdep.c \ mips-linux-nat.c \ mips-linux-tdep.c \ diff --git a/gdb/NEWS b/gdb/NEWS index f7fe9ae..b976815 100644 --- a/gdb/NEWS +++ b/gdb/NEWS @@ -47,6 +47,11 @@ end end +* New native configurations + +FreeBSD/mips mips*-*-freebsd + + * New targets Synopsys ARC arc*-*-elf32 diff --git a/gdb/config/mips/fbsd.mh b/gdb/config/mips/fbsd.mh new file mode 100644 index 0000000..f433347 --- /dev/null +++ b/gdb/config/mips/fbsd.mh @@ -0,0 +1,3 @@ +# Host: FreeBSD/mips +NATDEPFILES= fork-child.o inf-ptrace.o fbsd-nat.o mips-fbsd-nat.o +HAVE_NATIVE_GCORE_HOST = 1 diff --git a/gdb/configure.host b/gdb/configure.host index ef265eb..c45f61d 100644 --- a/gdb/configure.host +++ b/gdb/configure.host @@ -129,6 +129,7 @@ m88*-*-openbsd*) gdb_host=obsd ;; mips*-*-linux*) gdb_host=linux ;; mips*-*-netbsd* | mips*-*-knetbsd*-gnu) gdb_host=nbsd ;; +mips*-*-freebsd*) gdb_host=fbsd ;; mips64*-*-openbsd*) gdb_host=obsd64 ;; powerpc-*-aix* | rs6000-*-* | powerpc64-*-aix*) diff --git a/gdb/mips-fbsd-nat.c b/gdb/mips-fbsd-nat.c new file mode 100644 index 0000000..0472df8 --- /dev/null +++ b/gdb/mips-fbsd-nat.c @@ -0,0 +1,136 @@ +/* Native-dependent code for FreeBSD/mips. + + 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 "inferior.h" +#include "regcache.h" +#include "target.h" + +#include +#include +#include + +#include "fbsd-nat.h" +#include "mips-tdep.h" +#include "mips-fbsd-tdep.h" +#include "inf-ptrace.h" + +/* Determine if PT_GETREGS fetches this register. */ + +static bool +getregs_supplies (struct gdbarch *gdbarch, int regnum) +{ + return (regnum >= MIPS_ZERO_REGNUM + && regnum <= gdbarch_pc_regnum (gdbarch)); +} + +/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this + for all registers. */ + +static void +mips_fbsd_fetch_inferior_registers (struct target_ops *ops, + struct regcache *regcache, int regnum) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + if (regnum == -1 || getregs_supplies (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")); + + mips_fbsd_supply_gregs (regcache, regnum, ®s, sizeof (register_t)); + if (regnum != -1) + return; + } + + if (regnum == -1 + || regnum >= gdbarch_fp0_regnum (get_regcache_arch (regcache))) + { + struct fpreg fpregs; + + if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) + perror_with_name (_("Couldn't get floating point status")); + + mips_fbsd_supply_fpregs (regcache, regnum, &fpregs, + sizeof (f_register_t)); + } +} + +/* Store register REGNUM back into the inferior. If REGNUM is -1, do + this for all registers. */ + +static void +mips_fbsd_store_inferior_registers (struct target_ops *ops, + struct regcache *regcache, int regnum) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + if (regnum == -1 || getregs_supplies (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")); + + mips_fbsd_collect_gregs (regcache, regnum, (char *) ®s, + sizeof (register_t)); + + 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 + || regnum >= gdbarch_fp0_regnum (get_regcache_arch (regcache))) + { + struct fpreg fpregs; + + if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) + perror_with_name (_("Couldn't get floating point status")); + + mips_fbsd_collect_fpregs (regcache, regnum, (char *) &fpregs, + sizeof (f_register_t)); + + if (ptrace (PT_SETFPREGS, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) + perror_with_name (_("Couldn't write floating point status")); + } +} + + +/* Provide a prototype to silence -Wmissing-prototypes. */ +void _initialize_mips_fbsd_nat (void); + +void +_initialize_mips_fbsd_nat (void) +{ + struct target_ops *t; + + t = inf_ptrace_target (); + t->to_fetch_registers = mips_fbsd_fetch_inferior_registers; + t->to_store_registers = mips_fbsd_store_inferior_registers; + fbsd_nat_add_target (t); +} -- cgit v1.1