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authorcoadde [Márcio Alexandre Silva Delgado] <coadde@parabola.nu>2014-03-16 13:52:27 -0300
committercoadde [Márcio Alexandre Silva Delgado] <coadde@parabola.nu>2014-03-16 13:52:27 -0300
commit1f061b5ad71a02ef2f92c519cb3380f6ccb56a0e (patch)
tree394159494b2fa03ec1d39a34ccc803602c0da43d
parent57cf5c66d9925260929ed385a10d09bc8bd87fc3 (diff)
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add mips*-kfreebsd-gnu support on gcc
-rw-r--r--cross/cross-binutils/PKGBUILD5
-rw-r--r--cross/cross-gcc/PKGBUILD10
-rw-r--r--cross/cross-gcc/mips-kfreebsd-gnu.patch426
3 files changed, 438 insertions, 3 deletions
diff --git a/cross/cross-binutils/PKGBUILD b/cross/cross-binutils/PKGBUILD
index de5cf209b..e343797c7 100644
--- a/cross/cross-binutils/PKGBUILD
+++ b/cross/cross-binutils/PKGBUILD
@@ -3,15 +3,18 @@
# Maintainer: Márcio Silva (Parabola) <coadde@parabola.nu>
# toolchain build order:
-# {kernel}-api-headers->glibc->binutils->gcc->binutils->glibc
+# {kernel}-api-headers->glibc->binutils->gcc->binutils->glibc
# toolchain (for cross-compiler) build order:
# {kernel}-api-headers(host system)->glibc(host system)
+# ->binutils(host system)->gcc(host system)->binutils(host system)->glibc(host system)
# ->binutils(cross)->gcc(cross)
# ->kernel-api-headers(target system)->glibc(target system)
# ->binutils(target system)->gcc(target system)->binutils(target system)
# ->glibc(target system)
+# NOTE: libtool requires rebuilt with each new gcc version
+
#--------------------------------------------------------------------------------
# cross-compile table
#--------------------------------------------------------------------------------
diff --git a/cross/cross-gcc/PKGBUILD b/cross/cross-gcc/PKGBUILD
index f6d29de2c..0a1025c54 100644
--- a/cross/cross-gcc/PKGBUILD
+++ b/cross/cross-gcc/PKGBUILD
@@ -141,11 +141,13 @@ source=(#ftp://$_pkgname.gnu.org/pub/$_pkgname/releases/$_pkgname-${pkgver}/$_pk
ftp://$_pkgname.gnu.org/pub/$_pkgname/snapshots/${_snapshot}/$_pkgname-${_snapshot}.tar.bz2
$_pkgname-4.8-filename-output.patch
$_pkgname-4.8-lambda-ICE.patch
- $_pkgname-xtensa.patch)
+ $_pkgname-xtensa.patch
+ mips-kfreebsd-gnu.patch)
md5sums=('9d35549404a2326540fb88301ebd1977'
'40cb437805e2f7a006aa0d0c3098ab0f'
'6eb6e080dbf7bc6825f53a0aaa6c4ef9'
- '81372ee980289a9f6df01dad31c64a63')
+ '81372ee980289a9f6df01dad31c64a63'
+ '43282cddb2080b1180f7b76d3a8a832c')
if [ -n "${_snapshot}" ]; then
_basedir=$_pkgname-${_snapshot}
@@ -182,6 +184,10 @@ prepare() {
# open-ath9k-htc-firmware patch on xtensa-unknown-elf
[[ $_target == xtensa-unknown-elf ]] && patch -p1 -i ${srcdir}/$_pkgname-xtensa.patch
+ # mips patch on kfreebsd-gnu
+ [[ $_target == mips64el-unknown-kfreebsd-gnu ]] && \
+ patch -p1 -i ${srcdir}/mips-kfreebsd-gnu.patch
+
mkdir ${srcdir}/$_pkgname-build
}
diff --git a/cross/cross-gcc/mips-kfreebsd-gnu.patch b/cross/cross-gcc/mips-kfreebsd-gnu.patch
new file mode 100644
index 000000000..9c8acfa91
--- /dev/null
+++ b/cross/cross-gcc/mips-kfreebsd-gnu.patch
@@ -0,0 +1,426 @@
+diff -Nur a/gcc/config/mips/kfreebsd-gnu64.h b/gcc/config/mips/kfreebsd-gnu64.h
+--- a/gcc/config/mips/kfreebsd-gnu64.h 1969-12-31 21:00:00.000000000 -0300
++++ b/gcc/config/mips/kfreebsd-gnu64.h 2014-03-16 13:20:51.041846449 -0300
+@@ -0,0 +1,27 @@
++/* Definitions for MIPS running Linux-based GNU systems with ELF format
++ using n32/64 abi.
++ Copyright (C) 2002-2013 Free Software Foundation, Inc.
++
++This file is part of GCC.
++
++GCC 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, or (at your option)
++any later version.
++
++GCC 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 GCC; see the file COPYING3. If not see
++<http://www.gnu.org/licenses/>. */
++
++#define GNU_USER_LINK_EMULATION32 "elf32%{EB:b}%{EL:l}tsmip_fbsd"
++#define GNU_USER_LINK_EMULATION64 "elf64%{EB:b}%{EL:l}tsmip_fbsd"
++#define GNU_USER_LINK_EMULATIONN32 "elf32%{EB:b}%{EL:l}tsmipn32_fbsd"
++
++#define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1"
++#define GLIBC_DYNAMIC_LINKER64 "/lib64/ld.so.1"
++#define GNU_USER_DYNAMIC_LINKERN32 "/lib32/ld.so.1"
+diff -Nur a/gcc/config/mips/kfreebsd-gnu.h b/gcc/config/mips/kfreebsd-gnu.h
+--- a/gcc/config/mips/kfreebsd-gnu.h 1969-12-31 21:00:00.000000000 -0300
++++ b/gcc/config/mips/kfreebsd-gnu.h 2013-01-10 18:38:27.000000000 -0200
+@@ -0,0 +1,20 @@
++/* Definitions for MIPS running Linux-based GNU systems with ELF format.
++ Copyright (C) 1998-2013 Free Software Foundation, Inc.
++
++This file is part of GCC.
++
++GCC 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, or (at your option)
++any later version.
++
++GCC 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 GCC; see the file COPYING3. If not see
++<http://www.gnu.org/licenses/>. */
++
++#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+diff -Nur a/gcc/config/mips/mti-kfreebsd.h b/gcc/config/mips/mti-kfreebsd.h
+--- a/gcc/config/mips/mti-kfreebsd.h 1969-12-31 21:00:00.000000000 -0300
++++ b/gcc/config/mips/mti-kfreebsd.h 2014-03-16 06:26:20.059268372 -0300
+@@ -0,0 +1,43 @@
++/* Target macros for mips*-mti-linux* targets.
++ Copyright (C) 2012-2013 Free Software Foundation, Inc.
++
++This file is part of GCC.
++
++GCC 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, or (at your option)
++any later version.
++
++GCC 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 GCC; see the file COPYING3. If not see
++<http://www.gnu.org/licenses/>. */
++
++/* This target is a multilib target, specify the sysroot paths. */
++#undef SYSROOT_SUFFIX_SPEC
++#define SYSROOT_SUFFIX_SPEC \
++ "%{mips32:/mips32}%{mips64:/mips64}%{mips64r2:/mips64r2}%{mabi=64:/64}%{mel|EL:/el}%{msoft-float:/sof}"
++
++#undef DRIVER_SELF_SPECS
++#define DRIVER_SELF_SPECS \
++ /* Make sure a -mips option is present. This helps us to pick \
++ the right multilib, and also makes the later specs easier \
++ to write. */ \
++ MIPS_ISA_LEVEL_SPEC, \
++ \
++ /* Infer the default float setting from -march. */ \
++ MIPS_ARCH_FLOAT_SPEC, \
++ \
++ /* Infer the -msynci setting from -march if not explicitly set. */ \
++ MIPS_ISA_SYNCI_SPEC, \
++ \
++ /* If no ABI option is specified, infer one from the ISA level \
++ or -mgp setting. */ \
++ "%{!mabi=*: %{" MIPS_32BIT_OPTION_SPEC ": -mabi=32;: -mabi=n32}}", \
++ \
++ /* Base SPECs. */ \
++ BASE_DRIVER_SELF_SPECS
+diff -Nur a/gcc/config/mips/t-kfreebsd64 b/gcc/config/mips/t-kfreebsd64
+--- a/gcc/config/mips/t-kfreebsd64 1969-12-31 21:00:00.000000000 -0300
++++ b/gcc/config/mips/t-kfreebsd64 2014-03-16 04:56:34.851827638 -0300
+@@ -0,0 +1,26 @@
++# Copyright (C) 2003-2013 Free Software Foundation, Inc.
++#
++# This file is part of GCC.
++#
++# GCC 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, or (at your option)
++# any later version.
++#
++# GCC 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 GCC; see the file COPYING3. If not see
++# <http://www.gnu.org/licenses/>.
++
++MULTILIB_OPTIONS = mabi=n32/mabi=32/mabi=64
++MULTILIB_DIRNAMES = n32 32 64
++MIPS_EL = $(if $(filter %el, $(firstword $(subst -, ,$(target)))),el)
++MIPS_SOFT = $(if $(strip $(filter MASK_SOFT_FLOAT_ABI, $(target_cpu_default)) $(filter soft, $(with_float))),soft)
++MULTILIB_OSDIRNAMES = \
++ ../lib32$(call if_multiarch,:mips64$(MIPS_EL)-kfreebsd-gnuabin32$(MIPS_SOFT)) \
++ ../lib$(call if_multiarch,:mips$(MIPS_EL)-kfreebsd-gnu$(MIPS_SOFT)) \
++ ../lib64$(call if_multiarch,:mips64$(MIPS_EL)-kfreebsd-gnuabi64$(MIPS_SOFT))
+diff -Nur a/gcc/config/mips/t-mti-kfreebsd b/gcc/config/mips/t-mti-kfreebsd
+--- a/gcc/config/mips/t-mti-kfreebsd 1969-12-31 21:00:00.000000000 -0300
++++ b/gcc/config/mips/t-mti-kfreebsd 2013-01-10 18:38:27.000000000 -0200
+@@ -0,0 +1,33 @@
++# Copyright (C) 2012-2013 Free Software Foundation, Inc.
++#
++# This file is part of GCC.
++#
++# GCC 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, or (at your option)
++# any later version.
++#
++# GCC 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 GCC; see the file COPYING3. If not see
++# <http://www.gnu.org/licenses/>.
++
++# The default build is mips32r2, hard-float big-endian. Add mips32,
++# soft-float, and little-endian variations.
++
++MULTILIB_OPTIONS = mips32/mips64/mips64r2 mabi=64 EL msoft-float
++MULTILIB_DIRNAMES = mips32 mips64 mips64r2 64 el sof
++MULTILIB_MATCHES = EL=mel EB=meb
++
++# The 64 bit ABI is not supported on the mips32 architecture.
++MULTILIB_EXCEPTIONS += *mips32*/*mabi=64*
++
++# The 64 bit ABI is not supported on the mips32r2 architecture.
++# Because mips32r2 is the default we can't use that flag to trigger
++# the exception so we check for mabi=64 with no specific mips flag
++# instead.
++MULTILIB_EXCEPTIONS += mabi=64*
+diff -Nur a/gcc/config.gcc b/gcc/config.gcc
+--- a/gcc/config.gcc 2013-12-07 01:29:47.000000000 -0200
++++ b/gcc/config.gcc 2014-03-16 13:02:41.653469226 -0300
+@@ -1795,36 +1795,79 @@
+ tm_file="elfos.h ${tm_file} mips/elf.h netbsd.h netbsd-elf.h mips/netbsd.h"
+ extra_options="${extra_options} netbsd.opt netbsd-elf.opt"
+ ;;
+-mips*-mti-linux*)
+- tm_file="dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h ${tm_file} mips/gnu-user.h mips/gnu-user64.h mips/linux64.h mips/linux-common.h mips/mti-linux.h"
+- tmake_file="${tmake_file} mips/t-mti-linux"
++mips*-mti-linux* | mips*-mti-kfreebsd*-gnu)
++ tm_file="dbxelf.h elfos.h gnu-user.h glibc-stdint.h ${tm_file} mips/gnu-user.h mips/gnu-user64.h"
+ tm_defines="${tm_defines} MIPS_ISA_DEFAULT=33 MIPS_ABI_DEFAULT=ABI_32"
++ case ${target} in
++ mips*-mti-linux*)
++ tm_file="${tm_file} linux.h mips/linux64.h mips/linux-common.h mips/mti-linux.h
++ tmake_file="${tmake_file} mips/t-mti-linux"
++ ;;
++ mips*-mti-kfreebsd*-gnu)
++ tm_file="${tm_file} kfreebsd-gnu.h mips/kfreebsd-gnu64.h mips/mti-kfreebsd-gnu.h
++ tmake_file="${tmake_file} mips/t-mti-kfreebsd"
++ ;;
++ esac
+ gnu_ld=yes
+ gas=yes
+ test x$with_llsc != x || with_llsc=yes
+ ;;
+-mips64*-*-linux* | mipsisa64*-*-linux*)
+- tm_file="dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h ${tm_file} mips/gnu-user.h mips/gnu-user64.h mips/linux64.h mips/linux-common.h"
+- tmake_file="${tmake_file} mips/t-linux64"
++mips64*-*-linux* | mipsisa64*-*-linux* | mips64*-*-kfreebsd*-gnu | mipsisa64*-*-kfreebsd*-gnu)
++ tm_file="dbxelf.h elfos.h gnu-user.h glibc-stdint.h ${tm_file} mips/gnu-user.h mips/gnu-user64.h"
+ tm_defines="${tm_defines} MIPS_ABI_DEFAULT=ABI_N32"
+ case ${target} in
+ mips64el-st-linux-gnu)
+- tm_file="${tm_file} mips/st.h"
+- tmake_file="${tmake_file} mips/t-st"
++ tm_file="${tm_file} mips/st.h linux.h mips/linux64.h mips/linux-common.h"
++ tmake_file="${tmake_file} mips/t-st mips/t-linux64"
+ ;;
+ mips64octeon*-*-linux*)
++ tm_file="${tm_file} linux.h mips/linux64.h mips/linux-common.h"
++ tmake_file="${tmake_file} mips/t-linux64"
+ tm_defines="${tm_defines} MIPS_CPU_STRING_DEFAULT=\\\"octeon\\\""
+ target_cpu_default=MASK_SOFT_FLOAT_ABI
+ ;;
++ mips64*-*-linux*)
++ tm_file="${tm_file} linux.h mips/linux64.h mips/linux-common.h"
++ tmake_file="${tmake_file} mips/t-linux64"
++ ;;
+ mipsisa64r2*-*-linux*)
++ tm_file="${tm_file} linux.h mips/linux64.h mips/linux-common.h"
++ tmake_file="${tmake_file} mips/t-linux64"
++ tm_defines="${tm_defines} MIPS_ISA_DEFAULT=65"
++ ;;
++ mipsisa64*-*-linux*)
++ tm_file="${tm_file} linux.h mips/linux64.h mips/linux-common.h"
++ tmake_file="${tmake_file} mips/t-linux64"
++ ;;
++ mips64el-st-kfreebsd-gnu)
++ tm_file="${tm_file} mips/st.h kfreebsd-gnu.h mips/kfreebsd-gnu64.h"
++ tmake_file="${tmake_file} mips/t-st mips/t-kfreebsd64"
++ ;;
++ mips64octeon*-*-kfreebsd*-gnu)
++ tm_file="${tm_file} kfreebsd-gnu.h mips/kfreebsd-gnu64.h"
++ tmake_file="${tmake_file} mips/t-kfreebsd64"
++ tm_defines="${tm_defines} MIPS_CPU_STRING_DEFAULT=\\\"octeon\\\""
++ target_cpu_default=MASK_SOFT_FLOAT_ABI
++ ;;
++ mips64*-*-kfreebsd*-gnu)
++ tm_file="${tm_file} kfreebsd-gnu.h mips/kfreebsd-gnu64.h"
++ tmake_file="${tmake_file} mips/t-kfreebsd64"
++ ;;
++ mipsisa64r2*-*-kfreebsd*-gnu)
++ tm_file="${tm_file} kfreebsd-gnu.h mips/kfreebsd-gnu64.h"
++ tmake_file="${tmake_file} mips/t-kfreebsd64"
+ tm_defines="${tm_defines} MIPS_ISA_DEFAULT=65"
+ ;;
++ mipsisa64*-*-kfreebsd*-gnu)
++ tm_file="${tm_file} kfreebsd-gnu.h mips/kfreebsd-gnu64.h"
++ tmake_file="${tmake_file} mips/t-kfreebsd64"
++ ;;
+ esac
+ gnu_ld=yes
+ gas=yes
+ test x$with_llsc != x || with_llsc=yes
+ ;;
+-mips*-*-linux*) # Linux MIPS, either endian.
++mips*-*-linux*) # MIPS, either endian.
+ tm_file="dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h ${tm_file} mips/gnu-user.h mips/linux.h"
+ if test x$enable_targets = xall; then
+ tm_file="${tm_file} mips/gnu-user64.h mips/linux64.h"
+@@ -1840,6 +1883,22 @@
+ esac
+ test x$with_llsc != x || with_llsc=yes
+ ;;
++mips*-*-kfreebsd*-gnu) # MIPS, either endian.
++ tm_file="dbxelf.h elfos.h gnu-user.h kfreebsd-gnu.h glibc-stdint.h ${tm_file} mips/gnu-user.h mips/kfreebsd-gnu.h"
++ if test x$enable_targets = xall; then
++ tm_file="${tm_file} mips/gnu-user64.h mips/kfreebsd-gnu64.h"
++ tmake_file="${tmake_file} mips/t-kfreebsd64"
++ fi
++ tm_file="${tm_file} kfreebsd-gnu.h"
++ case ${target} in
++ mipsisa32r2*)
++ tm_defines="${tm_defines} MIPS_ISA_DEFAULT=33"
++ ;;
++ mipsisa32*)
++ tm_defines="${tm_defines} MIPS_ISA_DEFAULT=32"
++ esac
++ test x$with_llsc != x || with_llsc=yes
++ ;;
+ mips*-mti-elf*)
+ tm_file="elfos.h newlib-stdint.h ${tm_file} mips/elf.h mips/sde.h mips/mti-elf.h"
+ tmake_file="mips/t-mti-elf"
+diff -Nur a/libgcc/config/mips/kfreebsd-gnu-unwind.h b/libgcc/config/mips/kfreebsd-gnu-unwind.h
+--- a/libgcc/config/mips/kfreebsd-gnu-unwind.h 1969-12-31 21:00:00.000000000 -0300
++++ b/libgcc/config/mips/kfreebsd-gnu-unwind.h 2013-02-25 11:53:16.000000000 -0200
+@@ -0,0 +1,120 @@
++/* DWARF2 EH unwinding support for MIPS Linux.
++ Copyright (C) 2004-2013 Free Software Foundation, Inc.
++
++This file is part of GCC.
++
++GCC 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, or (at your option)
++any later version.
++
++GCC 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.
++
++Under Section 7 of GPL version 3, you are granted additional
++permissions described in the GCC Runtime Library Exception, version
++3.1, as published by the Free Software Foundation.
++
++You should have received a copy of the GNU General Public License and
++a copy of the GCC Runtime Library Exception along with this program;
++see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
++<http://www.gnu.org/licenses/>. */
++
++#ifndef inhibit_libc
++/* Do code reading to identify a signal frame, and set the frame
++ state data appropriately. See unwind-dw2.c for the structs. */
++
++#include <signal.h>
++#include <asm/unistd.h>
++
++/* The third parameter to the signal handler points to something with
++ * this structure defined in asm/ucontext.h, but the name clashes with
++ * struct ucontext from sys/ucontext.h so this private copy is used. */
++typedef struct _sig_ucontext {
++ unsigned long uc_flags;
++ struct _sig_ucontext *uc_link;
++ stack_t uc_stack;
++ struct sigcontext uc_mcontext;
++ sigset_t uc_sigmask;
++} _sig_ucontext_t;
++
++#define MD_FALLBACK_FRAME_STATE_FOR mips_fallback_frame_state
++
++static _Unwind_Reason_Code
++mips_fallback_frame_state (struct _Unwind_Context *context,
++ _Unwind_FrameState *fs)
++{
++ u_int32_t *pc = (u_int32_t *) context->ra;
++ struct sigcontext *sc;
++ _Unwind_Ptr new_cfa, reg_offset;
++ int i;
++
++ /* 24021061 li v0, 0x1061 (rt_sigreturn)*/
++ /* 0000000c syscall */
++ /* or */
++ /* 24021017 li v0, 0x1017 (sigreturn) */
++ /* 0000000c syscall */
++ if (pc[1] != 0x0000000c)
++ return _URC_END_OF_STACK;
++#if _MIPS_SIM == _ABIO32
++ if (pc[0] == (0x24020000 | __NR_sigreturn))
++ {
++ struct sigframe {
++ u_int32_t ass[4]; /* Argument save space for o32. */
++ u_int32_t trampoline[2];
++ struct sigcontext sigctx;
++ } *rt_ = context->cfa;
++ sc = &rt_->sigctx;
++ }
++ else
++#endif
++ if (pc[0] == (0x24020000 | __NR_rt_sigreturn))
++ {
++ struct rt_sigframe {
++ u_int32_t ass[4]; /* Argument save space for o32. */
++ u_int32_t trampoline[2];
++ siginfo_t info;
++ _sig_ucontext_t uc;
++ } *rt_ = context->cfa;
++ sc = &rt_->uc.uc_mcontext;
++ }
++ else
++ return _URC_END_OF_STACK;
++
++ new_cfa = (_Unwind_Ptr) sc;
++ fs->regs.cfa_how = CFA_REG_OFFSET;
++ fs->regs.cfa_reg = STACK_POINTER_REGNUM;
++ fs->regs.cfa_offset = new_cfa - (_Unwind_Ptr) context->cfa;
++
++ /* On o32 Linux, the register save slots in the sigcontext are
++ eight bytes. We need the lower half of each register slot,
++ so slide our view of the structure back four bytes. */
++#if _MIPS_SIM == _ABIO32 && defined __MIPSEB__
++ reg_offset = 4;
++#else
++ reg_offset = 0;
++#endif
++
++ for (i = 0; i < 32; i++) {
++ fs->regs.reg[i].how = REG_SAVED_OFFSET;
++ fs->regs.reg[i].loc.offset
++ = (_Unwind_Ptr)&(sc->sc_regs[i]) + reg_offset - new_cfa;
++ }
++ /* "PC & -2" points to the faulting instruction, but the unwind code
++ searches for "(ADDR & -2) - 1". (See MASK_RETURN_ADDR for the source
++ of the -2 mask.) Adding 2 here ensures that "(ADDR & -2) - 1" is the
++ address of the second byte of the faulting instruction.
++
++ Note that setting fs->signal_frame would not work. As the comment
++ above MASK_RETURN_ADDR explains, MIPS unwinders must earch for an
++ odd-valued address. */
++ fs->regs.reg[DWARF_ALT_FRAME_RETURN_COLUMN].how = REG_SAVED_VAL_OFFSET;
++ fs->regs.reg[DWARF_ALT_FRAME_RETURN_COLUMN].loc.offset
++ = (_Unwind_Ptr)(sc->sc_pc) + 2 - new_cfa;
++ fs->retaddr_column = DWARF_ALT_FRAME_RETURN_COLUMN;
++
++ return _URC_NO_REASON;
++}
++#endif
+diff -Nur a/libgcc/config.host b/libgcc/config.host
+--- a/libgcc/config.host 2014-01-21 17:50:02.000000000 -0200
++++ b/libgcc/config.host 2014-03-16 05:04:15.960188275 -0300
+@@ -732,6 +732,14 @@
+ tmake_file="${tmake_file} mips/t-tpbit"
+ fi
+ ;;
++mips*-*-kfreebsd*-gnu) # MIPS, either endian.
++ extra_parts="$extra_parts crtfastmath.o"
++ tmake_file="${tmake_file} t-crtfm mips/t-mips16"
++ md_unwind_header=mips/kfreebsd-gnu-unwind.h
++ if test "${ac_cv_sizeof_long_double}" = 16; then
++ tmake_file="${tmake_file} mips/t-tpbit"
++ fi
++ ;;
+ mips*-sde-elf*)
+ tmake_file="$tmake_file mips/t-crtstuff mips/t-mips16"
+ case "${with_newlib}" in