Hello all,
this is a patch which brings support for arm*-*-freebsd* to trunk.
The architectures supported are arm-*-*freebsd*, armv6-*-freebsd* and
armv6hf-*-freebsd*.
armv6 stands for ARM_ARCH == 6, arm stands for ARM_ARCH < 6.
There is kernel development for armv8 aka. aarch64 ongoing but this is
not covered here. This patch only covers 32-bit arm in a basic manner.
The patch is built and tested against armv6, armv6hf and arm. The former
two tests (lots of) were done on a WANDBOARD-QUAD, the latter on a
MARVELL board with 256MB Ram and 200MHz cpu.... (around 72h+ for a build
and test.....)
Results for armv6hf are on the list. Only one entry but locally I ran
several dozens runs...
Once if this patch is accepted a few test suite additions will follow.
(arm*-*-*eabi* -> arm_eabi)
The patch itself is also prepared for arm*eb*-*-freebsd*, but I could
not test since I lack the HW.
I appreciate comments, questions and also an ack if this patch is ok for
trunk.
TIA,
Andreas
toplevel:
2014-11-02 Andreas Tobler <andre...@gcc.gnu.org>
* configure.ac: Don't add ${libgcj} for arm*-*-freebsd*.
* configure: Regenerate.
gcc:
2014-11-02 Andreas Tobler <andre...@gcc.gnu.org>
* config.gcc (arm*-*-freebsd*): New configuration.
* config/arm/freebsd.h: New file.
* config.host: A extras components for arm*-*-freebsd*.
* config/arm/arm.c (arm_init_libfuncs): FreeBSD does not support 8 byte
atomics for __ARM_ARCH__ < 6 yet.
(arm_option_override): FreeBSD has not yet implemented unaligned access.
libgcc:
2014-11-02 Andreas Tobler <andre...@gcc.gnu.org>
* config.host (arm*-*-freebsd*): Add new configuration for
arm*-*-freebsd*.
* config/arm/freebsd-atomic.c: New file.
* config/arm/t-freebsd: Likewise.
* config/arm/unwind-arm.h: Add __FreeBSD__ to the list of 'PC-relative
indirect' OS's.
libstdc++:
2014-11-02 Andreas Tobler <andre...@gcc.gnu.org>
* configure.host: Add arm*-*-freebsd* port_specific_symbol_files.
Index: configure.ac
===================================================================
--- configure.ac (revision 217020)
+++ configure.ac (working copy)
@@ -711,6 +711,9 @@
alpha*-*-*vms*)
noconfigdirs="$noconfigdirs ${libgcj}"
;;
+ arm*-*-freebsd*)
+ noconfigdirs="$noconfigdirs ${libgcj}"
+ ;;
arm-wince-pe)
noconfigdirs="$noconfigdirs ${libgcj}"
;;
Index: gcc/config/arm/arm.c
===================================================================
--- gcc/config/arm/arm.c (revision 217020)
+++ gcc/config/arm/arm.c (working copy)
@@ -2202,7 +2202,11 @@
{
/* For Linux, we have access to kernel support for atomic operations. */
if (arm_abi == ARM_ABI_AAPCS_LINUX)
+#ifndef __FreeBSD__
init_sync_libfuncs (2 * UNITS_PER_WORD);
+#else
+ init_sync_libfuncs (UNITS_PER_WORD);
+#endif
/* There are no special library functions unless we are using the
ARM BPABI. */
@@ -3036,6 +3040,9 @@
warning (0, "target CPU does not support unaligned accesses");
unaligned_access = 0;
}
+#ifdef __FreeBSD__
+ unaligned_access = 0;
+#endif
if (TARGET_THUMB1 && flag_schedule_insns)
{
Index: gcc/config/arm/freebsd.h
===================================================================
--- gcc/config/arm/freebsd.h (revision 0)
+++ gcc/config/arm/freebsd.h (working copy)
@@ -0,0 +1,170 @@
+/* Definitions of target machine for GNU compiler, FreeBSD/arm version.
+ Copyright (C) 2002-2014 Free Software Foundation, Inc.
+ Contributed by Wasabi Systems, 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
+ along with GCC; see the file COPYING3. If not see
+ <http://www.gnu.org/licenses/>. */
+
+#undef SUBTARGET_CPP_SPEC
+#define SUBTARGET_CPP_SPEC FBSD_CPP_SPEC
+
+#undef SUBTARGET_EXTRA_SPECS
+#define SUBTARGET_EXTRA_SPECS \
+ { "subtarget_extra_asm_spec", SUBTARGET_EXTRA_ASM_SPEC }, \
+ { "subtarget_asm_float_spec", SUBTARGET_ASM_FLOAT_SPEC }, \
+ { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }
+
+#undef SUBTARGET_EXTRA_ASM_SPEC
+#define SUBTARGET_EXTRA_ASM_SPEC \
+ "%{mabi=apcs-gnu|mabi=atpcs:-meabi=gnu;:-meabi=5} " TARGET_FIX_V4BX_SPEC " \
+ %{fpic|fpie:-k} %{fPIC|fPIE:-k}"
+
+#undef SUBTARGET_ASM_FLOAT_SPEC
+#ifdef TARGET_FREEBSD_ARM_HARD_FLOAT
+/* Default to full vfp if we build for arm*hf. */
+#define SUBTARGET_ASM_FLOAT_SPEC "%{!mfpu=*:-mfpu=vfp}"
+#else
+#define SUBTARGET_ASM_FLOAT_SPEC "%{!mfpu=*:-mfpu=softvfp}"
+#endif
+
+#undef LINK_SPEC
+#define LINK_SPEC " \
+ %{p:%nconsider using `-pg' instead of `-p' with gprof (1) } \
+ %{v:-V} \
+ %{assert*} %{R*} %{rpath*} %{defsym*}
\
+ %{shared:-Bshareable %{h*} %{soname*}} \
+ %{!shared: \
+ %{!static: \
+ %{rdynamic:-export-dynamic} \
+ %{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \
+ %{static:-Bstatic}}
\
+ %{!static:--hash-style=both --enable-new-dtags} \
+ %{symbolic:-Bsymbolic} \
+ -X %{mbig-endian:-EB} %{mlittle-endian:-EL}"
+
+/* TARGET_BIG_ENDIAN_DEFAULT is set in
+ config.gcc for big endian configurations. */
+#if TARGET_BIG_ENDIAN_DEFAULT
+#define TARGET_ENDIAN_DEFAULT MASK_BIG_END
+#define TARGET_ENDIAN_OPTION "mbig-endian"
+#define TARGET_LINKER_EMULATION "armelfb_fbsd"
+#else
+#define TARGET_ENDIAN_DEFAULT 0
+#define TARGET_ENDIAN_OPTION "mlittle-endian"
+#define TARGET_LINKER_EMULATION "armelf_fbsd"
+#endif
+
+#undef SUBTARGET_EXTRA_LINK_SPEC
+#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p"
+
+#undef TARGET_OS_CPP_BUILTINS
+#define TARGET_OS_CPP_BUILTINS() \
+ do \
+ { \
+ FBSD_TARGET_OS_CPP_BUILTINS (); \
+ TARGET_BPABI_CPP_BUILTINS (); \
+ } \
+ while (false)
+
+/* We default to a soft-float ABI so that binaries can run on all
+ target hardware. */
+#undef TARGET_DEFAULT_FLOAT_ABI
+#ifdef TARGET_FREEBSD_ARM_HARD_FLOAT
+#define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD
+#else
+#define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_SOFT
+#endif
+
+#undef ARM_DEFAULT_ABI
+
+/* AACPS_LINUX has access to kernel atomic ops while we don't.
+ But AACPS defaults to short_enums. */
+#define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX
+
+#undef TARGET_DEFAULT
+#define TARGET_DEFAULT (MASK_INTERWORK | TARGET_ENDIAN_DEFAULT)
+
+/* We do not have any MULTILIB_OPTIONS specified, so there are no
+ MULTILIB_DEFAULTS. */
+#undef MULTILIB_DEFAULTS
+
+/* Use the AAPCS type for wchar_t, override the one from config/freebsd.h. */
+#undef WCHAR_TYPE
+#define WCHAR_TYPE (TARGET_AAPCS_BASED ? "unsigned int" : "long int")
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE BITS_PER_WORD
+
+#if defined (TARGET_FREEBSD_ARMv6)
+#undef SUBTARGET_CPU_DEFAULT
+#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm1176jzs
+#else
+#undef SUBTARGET_CPU_DEFAULT
+#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm9
+#endif
+
+/* FreeBSD does its profiling differently to the Acorn compiler. We
+ don't need a word following the mcount call; and to skip it
+ requires either an assembly stub or use of fomit-frame-pointer when
+ compiling the profiling functions. Since we break Acorn CC
+ compatibility below a little more won't hurt. */
+
+#undef ARM_FUNCTION_PROFILER
+#define ARM_FUNCTION_PROFILER(STREAM,LABELNO) \
+{ \
+ asm_fprintf (STREAM, "\tmov\t%Rip, %Rlr\n"); \
+ asm_fprintf (STREAM, "\tbl\t__mcount%s\n", \
+ (TARGET_ARM && NEED_PLT_RELOC) \
+ ? "(PLT)" : ""); \
+}
+
+/* Clear the instruction cache from `BEG' to `END'. This makes a
+ call to the ARM_SYNC_ICACHE architecture specific syscall. */
+#define CLEAR_INSN_CACHE(BEG, END) \
+do \
+ { \
+ extern int sysarch (int number, void *args); \
+ struct \
+ {
\
+ unsigned int addr; \
+ int len; \
+ } s; \
+ s.addr = (unsigned int) (BEG); \
+ s.len = (END) - (BEG); \
+ (void) sysarch (0, &s); \
+ } \
+while (0)
+
+/* This is how we tell the assembler that two symbols have the same value. */
+#define ASM_OUTPUT_DEF(FILE, NAME1, NAME2) \
+ do \
+ { \
+ assemble_name (FILE, NAME1); \
+ fputs (" = ", FILE); \
+ assemble_name (FILE, NAME2); \
+ fputc ('\n', FILE); \
+ } \
+ while (0)
+
+/* Add .note.GNU-stack. */
+#undef NEED_INDICATE_EXEC_STACK
+#define NEED_INDICATE_EXEC_STACK 1
+
+#define ARM_TARGET2_DWARF_FORMAT (DW_EH_PE_pcrel | DW_EH_PE_indirect)
Index: gcc/config.gcc
===================================================================
--- gcc/config.gcc (revision 217020)
+++ gcc/config.gcc (working copy)
@@ -259,7 +259,6 @@
arm*-wince-pe* \
| arm*-*-ecos-elf \
| arm*-*-elf \
- | arm*-*-freebsd* \
| arm*-*-linux* \
| arm*-*-uclinux* \
| i[34567]86-go32-* \
@@ -1000,6 +999,27 @@
extra_options="${extra_options} arm/vxworks.opt"
tmake_file="${tmake_file} arm/t-arm arm/t-vxworks"
;;
+arm*-*-freebsd*) # ARM FreeBSD EABI
+ tm_file="dbxelf.h elfos.h ${fbsd_tm_file} arm/elf.h"
+ case $target in
+ arm*b-*-freebsd*)
+ tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1"
+ ;;
+ esac
+ tmake_file="${tmake_file} arm/t-arm arm/t-bpabi"
+ tm_file="${tm_file} arm/bpabi.h arm/freebsd.h arm/aout.h arm/arm.h"
+ case $target in
+ armv[67]*-*-freebsd*)
+ tm_defines="${tm_defines} TARGET_FREEBSD_ARMv6=1"
+ ;;
+ esac
+ case $target in
+ arm*hf-*-freebsd*)
+ tm_defines="${tm_defines} TARGET_FREEBSD_ARM_HARD_FLOAT=1"
+ ;;
+ esac
+ with_tls=${with_tls:-gnu}
+ ;;
arm*-*-netbsdelf*)
tm_file="dbxelf.h elfos.h netbsd.h netbsd-elf.h arm/elf.h arm/aout.h
${tm_file} arm/netbsd-elf.h"
extra_options="${extra_options} netbsd.opt netbsd-elf.opt"
Index: gcc/config.host
===================================================================
--- gcc/config.host (revision 217020)
+++ gcc/config.host (working copy)
@@ -99,7 +99,7 @@
esac
case ${host} in
- arm*-*-linux*)
+ arm*-*-freebsd* | arm*-*-linux*)
case ${target} in
arm*-*-*)
host_extra_gcc_objs="driver-arm.o"
Index: libgcc/config/arm/freebsd-atomic.c
===================================================================
--- libgcc/config/arm/freebsd-atomic.c (revision 0)
+++ libgcc/config/arm/freebsd-atomic.c (working copy)
@@ -0,0 +1,224 @@
+/* FreeBSD specific atomic operations for ARM EABI.
+ Copyright (C) 2014 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/>. */
+
+#include <sys/types.h>
+
+#define HIDDEN __attribute__ ((visibility ("hidden")))
+
+#define ARM_VECTORS_HIGH 0xffff0000U
+#define ARM_TP_ADDRESS (ARM_VECTORS_HIGH + 0x1000)
+#define ARM_RAS_START (ARM_TP_ADDRESS + 4)
+
+void HIDDEN
+__sync_synchronize (void)
+{
+#if defined (__ARM_ARCH_6__) || defined (__ARM_ARCH_6J__) \
+ || defined (__ARM_ARCH_6K__) || defined (__ARM_ARCH_6T2__) \
+ || defined (__ARM_ARCH_6Z__) || defined (__ARM_ARCH_6ZK__) \
+ || defined (__ARM_ARCH_7__) || defined (__ARM_ARCH_7A__)
+#if defined (__ARM_ARCH_7__) || defined (__ARM_ARCH_7A__)
+ __asm __volatile ("dmb" : : : "memory");
+#else
+ __asm __volatile ("mcr p15, 0, r0, c7, c10, 5" : : : "memory");
+#endif
+#else
+ __asm __volatile ("nop" : : : "memory");
+#endif
+}
+
+#if defined (__ARM_ARCH_6__) || defined (__ARM_ARCH_6J__) \
+ || defined (__ARM_ARCH_6K__) || defined (__ARM_ARCH_6T2__) \
+ || defined (__ARM_ARCH_6Z__) || defined (__ARM_ARCH_6ZK__) \
+ || defined (__ARM_ARCH_7__) || defined (__ARM_ARCH_7A__)
+
+/* These systems should be supported by the compiler. */
+
+#else /* __ARM_ARCH_5__ */
+
+#define SYNC_LOCK_TEST_AND_SET_N(N, TYPE, LDR, STR)
\
+TYPE HIDDEN
\
+__sync_lock_test_and_set_##N (TYPE *mem, TYPE val) \
+{ \
+ unsigned int old, temp, ras_start; \
+ \
+ ras_start = ARM_RAS_START; \
+ __asm volatile ( \
+ /* Set up Restartable Atomic Sequence. */ \
+ "1:" \
+ "\tadr %2, 1b\n" \
+ "\tstr %2, [%5]\n" \
+ "\tadr %2, 2f\n" \
+ "\tstr %2, [%5, #4]\n" \
+ \
+ "\t"LDR" %0, %4\n" /* Load old value. */ \
+ "\t"STR" %3, %1\n" /* Store new value. */ \
+ \
+ /* Tear down Restartable Atomic Sequence. */ \
+ "2:" \
+ "\tmov %2, #0x00000000\n" \
+ "\tstr %2, [%5]\n" \
+ "\tmov %2, #0xffffffff\n" \
+ "\tstr %2, [%5, #4]\n" \
+ : "=&r" (old), "=m" (*mem), "=&r" (temp) \
+ : "r" (val), "m" (*mem), "r" (ras_start)); \
+ return (old); \
+}
+
+#define SYNC_LOCK_RELEASE_N(N, TYPE) \
+void HIDDEN \
+__sync_lock_release_##N (TYPE *ptr) \
+{ \
+ /* All writes before this point must be seen before we release \
+ the lock itself. */ \
+ __sync_synchronize ();
\
+ *ptr = 0; \
+}
+
+#define SYNC_VAL_CAS_N(N, TYPE, LDR, STREQ)
\
+TYPE HIDDEN
\
+__sync_val_compare_and_swap_##N (TYPE *mem, TYPE expected, \
+ TYPE desired) \
+{ \
+ unsigned int old, temp, ras_start; \
+ \
+ ras_start = ARM_RAS_START; \
+ __asm volatile ( \
+ /* Set up Restartable Atomic Sequence. */ \
+ "1:" \
+ "\tadr %2, 1b\n" \
+ "\tstr %2, [%6]\n" \
+ "\tadr %2, 2f\n" \
+ "\tstr %2, [%6, #4]\n" \
+ \
+ "\t"LDR" %0, %5\n" /* Load old value. */ \
+ "\tcmp %0, %3\n" /* Compare to expected value. */\
+ "\t"STREQ" %4, %1\n" /* Store new value. */ \
+ \
+ /* Tear down Restartable Atomic Sequence. */ \
+ "2:" \
+ "\tmov %2, #0x00000000\n" \
+ "\tstr %2, [%6]\n" \
+ "\tmov %2, #0xffffffff\n" \
+ "\tstr %2, [%6, #4]\n" \
+ : "=&r" (old), "=m" (*mem), "=&r" (temp) \
+ : "r" (expected), "r" (desired), "m" (*mem), \
+ "r" (ras_start)); \
+ return (old); \
+}
+
+typedef unsigned char bool;
+
+#define SYNC_BOOL_CAS_N(N, TYPE) \
+bool HIDDEN \
+__sync_bool_compare_and_swap_##N (TYPE *ptr, TYPE oldval, \
+ TYPE newval) \
+{ \
+ TYPE actual_oldval \
+ = __sync_val_compare_and_swap_##N (ptr, oldval, newval); \
+ return (oldval == actual_oldval); \
+}
+
+#define SYNC_FETCH_AND_OP_N(N, TYPE, LDR, STR, NAME, OP)
\
+TYPE HIDDEN \
+__sync_fetch_and_##NAME##_##N (TYPE *mem, TYPE val) \
+{ \
+ unsigned int old, temp, ras_start; \
+ \
+ ras_start = ARM_RAS_START; \
+ __asm volatile ( \
+ /* Set up Restartable Atomic Sequence. */ \
+ "1:" \
+ "\tadr %2, 1b\n" \
+ "\tstr %2, [%5]\n" \
+ "\tadr %2, 2f\n" \
+ "\tstr %2, [%5, #4]\n" \
+ \
+ "\t"LDR" %0, %4\n" /* Load old value. */ \
+ "\t"OP" %2, %0, %3\n" /* Calculate new value. */ \
+ "\t"STR" %2, %1\n" /* Store new value. */ \
+ \
+ /* Tear down Restartable Atomic Sequence. */ \
+ "2:" \
+ "\tmov %2, #0x00000000\n" \
+ "\tstr %2, [%5]\n" \
+ "\tmov %2, #0xffffffff\n" \
+ "\tstr %2, [%5, #4]\n" \
+ : "=&r" (old), "=m" (*mem), "=&r" (temp) \
+ : "r" (val), "m" (*mem), "r" (ras_start)); \
+ return (old); \
+}
+
+#define SYNC_OP_AND_FETCH_N(N, TYPE, LDR, STR, NAME, OP)
\
+TYPE HIDDEN \
+__sync_##NAME##_and_fetch_##N (TYPE *mem, TYPE val) \
+{ \
+ unsigned int old, temp, ras_start; \
+ \
+ ras_start = ARM_RAS_START; \
+ __asm volatile ( \
+ /* Set up Restartable Atomic Sequence. */ \
+ "1:" \
+ "\tadr %2, 1b\n" \
+ "\tstr %2, [%5]\n" \
+ "\tadr %2, 2f\n" \
+ "\tstr %2, [%5, #4]\n" \
+ \
+ "\t"LDR" %0, %4\n" /* Load old value. */ \
+ "\t"OP" %2, %0, %3\n" /* Calculate new value. */ \
+ "\t"STR" %2, %1\n" /* Store new value. */ \
+ \
+ /* Tear down Restartable Atomic Sequence. */ \
+ "2:" \
+ "\tmov %2, #0x00000000\n" \
+ "\tstr %2, [%5]\n" \
+ "\tmov %2, #0xffffffff\n" \
+ "\tstr %2, [%5, #4]\n" \
+ : "=&r" (old), "=m" (*mem), "=&r" (temp) \
+ : "r" (val), "m" (*mem), "r" (ras_start)); \
+ return (old); \
+}
+
+#define EMIT_ALL_OPS_N(N, TYPE, LDR, STR, STREQ)
\
+SYNC_LOCK_TEST_AND_SET_N (N, TYPE, LDR, STR) \
+SYNC_LOCK_RELEASE_N (N, TYPE) \
+SYNC_VAL_CAS_N (N, TYPE, LDR, STREQ) \
+SYNC_BOOL_CAS_N (N, TYPE) \
+SYNC_FETCH_AND_OP_N (N, TYPE, LDR, STR, add, "add") \
+SYNC_FETCH_AND_OP_N (N, TYPE, LDR, STR, and, "and") \
+SYNC_FETCH_AND_OP_N (N, TYPE, LDR, STR, or, "orr") \
+SYNC_FETCH_AND_OP_N (N, TYPE, LDR, STR, sub, "sub") \
+SYNC_FETCH_AND_OP_N (N, TYPE, LDR, STR, xor, "eor") \
+SYNC_OP_AND_FETCH_N (N, TYPE, LDR, STR, add, "add") \
+SYNC_OP_AND_FETCH_N (N, TYPE, LDR, STR, and, "and") \
+SYNC_OP_AND_FETCH_N (N, TYPE, LDR, STR, or, "orr") \
+SYNC_OP_AND_FETCH_N (N, TYPE, LDR, STR, sub, "sub") \
+SYNC_OP_AND_FETCH_N (N, TYPE, LDR, STR, xor, "eor")
+
+
+
+EMIT_ALL_OPS_N (1, unsigned char, "ldrb", "strb", "streqb")
+EMIT_ALL_OPS_N (2, unsigned short, "ldrh", "strh", "streqh")
+EMIT_ALL_OPS_N (4, unsigned int, "ldr", "str", "streq")
+
+#endif
Index: libgcc/config/arm/t-freebsd
===================================================================
--- libgcc/config/arm/t-freebsd (revision 0)
+++ libgcc/config/arm/t-freebsd (working copy)
@@ -0,0 +1,9 @@
+# Just for these, we omit the frame pointer since it makes such a big
+# difference. It is then pointless adding debugging.
+HOST_LIBGCC2_CFLAGS += -fomit-frame-pointer
+
+LIB2ADD_ST += $(srcdir)/config/arm/freebsd-atomic.c
+
+# Use a version of div0 which raises SIGFPE.
+LIB1ASMFUNCS := $(filter-out _dvmd_tls,$(LIB1ASMFUNCS)) _dvmd_lnx
+
Index: libgcc/config/arm/unwind-arm.h
===================================================================
--- libgcc/config/arm/unwind-arm.h (revision 217020)
+++ libgcc/config/arm/unwind-arm.h (working copy)
@@ -48,7 +48,8 @@
if (!tmp)
return 0;
-#if (defined(linux) && !defined(__uClinux__)) || defined(__NetBSD__)
+#if (defined(linux) && !defined(__uClinux__)) || defined(__NetBSD__) \
+ || defined(__FreeBSD__)
/* Pc-relative indirect. */
#define _GLIBCXX_OVERRIDE_TTYPE_ENCODING (DW_EH_PE_pcrel | DW_EH_PE_indirect)
tmp += ptr;
Index: libgcc/config.host
===================================================================
--- libgcc/config.host (revision 217020)
+++ libgcc/config.host (working copy)
@@ -366,6 +366,13 @@
tmake_file="$tmake_file arm/t-arm arm/t-elf t-softfp-sfdf t-softfp-excl
arm/t-softfp t-softfp"
extra_parts="$extra_parts crti.o crtn.o"
;;
+arm*-*-freebsd*) # ARM FreeBSD EABI
+ tmake_file="${tmake_file} arm/t-arm t-fixedpoint-gnu-prefix arm/t-elf"
+ tmake_file="${tmake_file} arm/t-bpabi arm/t-freebsd t-slibgcc-libgcc"
+ tm_file="${tm_file} arm/bpabi-lib.h"
+ unwind_header=config/arm/unwind-arm.h
+ tmake_file="${tmake_file} t-softfp-sfdf t-softfp-excl arm/t-softfp
t-softfp"
+ ;;
arm*-*-netbsdelf*)
tmake_file="$tmake_file arm/t-arm arm/t-netbsd t-slibgcc-gld-nover"
;;
Index: libstdc++-v3/configure.host
===================================================================
--- libstdc++-v3/configure.host (revision 217020)
+++ libstdc++-v3/configure.host (working copy)
@@ -366,6 +366,9 @@
;;
esac
;;
+ arm*-*-freebsd*)
+
port_specific_symbol_files="\$(srcdir)/../config/os/gnu-linux/arm-eabi-extra.ver"
+ ;;
powerpc*-*-darwin*)
port_specific_symbol_files="\$(srcdir)/../config/os/bsd/darwin/ppc-extra.ver"
;;
