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[NetBSD] Add support for the Arm EABI.

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This is a roll-up of a set of changes needed to support the Arm EABI on NetBSD.

2019-06-14  Matt Thomas  <matt@3am-software.com>
	    Matthew Green  <mrg@eterna.com.au>
	    Nick Hudson  <skrll@netbsd.org>
	    Maya Rashish  <coypu@sdf.org>
	    Richard Earnshaw  <rearnsha@arm.com>

gcc:

	* config.gcc (arm*-*-netbsdelf*) Add support for EABI configuration.
	* config.host (arm*-*-netbsd*): Use driver-arm.o on native NetBSD.
	* config/arm/netbsd-eabi.h: New file.
	* config/arm/netbsd-elf.h (TARGET_OS_CPP_BUILTINS): Undefine before
	redefining.
	(SUBTARGET_EXTRA_ASM_SPEC): Don't pass -matpcs to the assembler.
	* config/netbsd-elf.h (NETBSD_LINK_LD_ELF_SO_SPEC): New define.
	(NETBSD_SUBTARGET_EXTRA_SPECS): New define.
	(SUBTARGET_EXTRA_SPECS): Define to NETBSD_SUBTARGET_EXTRA_SPECS.

libatomic:
	* configure.tgt (arm*): Handle NetBSD in the same way as FreeBSD.

libgcc:
	* config.host (arm*-*-netbsdelf*): Add support for EABI configurations.
	* config/arm/t-netbsd (LIB1ASMFUNCS): Add some additional assembler
	functions to build.
	* config/arm/t-netbsd-eabi: New file.


Co-Authored-By: Matthew Green <mrg@eterna.com.au>
Co-Authored-By: Maya Rashish <coypu@sdf.org>
Co-Authored-By: Nick Hudson <skrll@netbsd.org>
Co-Authored-By: Richard Earnshaw <rearnsha@arm.com>

From-SVN: r272290
This commit is contained in:
Matt Thomas 2019-06-14 14:04:20 +00:00 committed by Richard Earnshaw
parent cc28d23496
commit b27c108234
12 changed files with 231 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
gcc/ChangeLog
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@ -1,3 +1,19 @@
2019-06-14 Matt Thomas <matt@3am-software.com>
Matthew Green <mrg@eterna.com.au>
Nick Hudson <skrll@netbsd.org>
Maya Rashish <coypu@sdf.org>
Richard Earnshaw <rearnsha@arm.com>
* config.gcc (arm*-*-netbsdelf*) Add support for EABI configuration.
* config.host (arm*-*-netbsd*): Use driver-arm.o on native NetBSD.
* config/arm/netbsd-eabi.h: New file.
* config/arm/netbsd-elf.h (TARGET_OS_CPP_BUILTINS): Undefine before
redefining.
(SUBTARGET_EXTRA_ASM_SPEC): Don't pass -matpcs to the assembler.
* config/netbsd-elf.h (NETBSD_LINK_LD_ELF_SO_SPEC): New define.
(NETBSD_SUBTARGET_EXTRA_SPECS): New define.
(SUBTARGET_EXTRA_SPECS): Define to NETBSD_SUBTARGET_EXTRA_SPECS.
2019-06-14 Richard Biener <rguenther@suse.de>
* tree-loop-distribution.c (classify_partition): Return

31
gcc/config.gcc
View File

@ -1162,10 +1162,35 @@ arm*-*-freebsd*) # ARM FreeBSD EABI
with_tls=${with_tls:-gnu}
;;
arm*-*-netbsdelf*)
tm_file="dbxelf.h elfos.h ${nbsd_tm_file} arm/elf.h arm/aout.h ${tm_file} arm/netbsd-elf.h"
extra_options="${extra_options} netbsd.opt netbsd-elf.opt"
tmake_file="${tmake_file} arm/t-arm"
target_cpu_cname="strongarm"
tmake_file="${tmake_file} arm/t-arm"
tm_file="dbxelf.h elfos.h ${nbsd_tm_file} arm/elf.h"
extra_options="${extra_options} netbsd.opt netbsd-elf.opt"
case ${target} in
arm*eb-*) tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1" ;;
esac
case ${target} in
arm*-*-netbsdelf-*eabi*)
tm_file="$tm_file arm/bpabi.h arm/netbsd-elf.h arm/netbsd-eabi.h"
tmake_file="$tmake_file arm/t-bpabi arm/t-netbsdeabi"
;;
*)
tm_file="$tm_file arm/netbsd-elf.h"
tmake_file="$tmake_file arm/t-netbsd"
;;
esac
tm_file="${tm_file} arm/aout.h arm/arm.h"
case ${target} in
arm*-*-netbsdelf-*eabihf*)
# Hard-float requires at least Arm v5te
target_cpu_cname="arm10e"
tm_defines="${tm_defines} TARGET_DEFAULT_FLOAT_ABI=ARM_FLOAT_ABI_HARD"
;;
esac
case ${target} in
armv6*) target_cpu_cname="arm1176jzf-s";;
armv7*) target_cpu_cname="generic-armv7-a";;
esac
;;
arm*-*-linux-*) # ARM GNU/Linux with ELF
tm_file="dbxelf.h elfos.h gnu-user.h linux.h linux-android.h glibc-stdint.h arm/elf.h arm/linux-gas.h arm/linux-elf.h"

2
gcc/config.host
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@ -107,7 +107,7 @@ case ${host} in
;;
esac
;;
arm*-*-freebsd* | arm*-*-linux* | arm*-*-fuchsia*)
arm*-*-freebsd* | arm*-*-netbsd* | arm*-*-linux* | arm*-*-fuchsia*)
case ${target} in
arm*-*-*)
host_extra_gcc_objs="driver-arm.o"

105
gcc/config/arm/netbsd-eabi.h Normal file
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@ -0,0 +1,105 @@
/* Definitions of target machine for GNU compiler, NetBSD/arm ELF version.
Copyright (C) 2002, 2003, 2004, 2005, 2007 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.
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/>. */
/* Run-time Target Specification. */
#undef MULTILIB_DEFAULTS
#define MULTILIB_DEFAULTS { "mabi=aapcs-linux" }
#define TARGET_LINKER_EABI_SUFFIX_SOFT \
"%{!mabi=apcs-gnu:%{!mabi=atpcs:%{mfloat-abi=hard:_eabihf;:_eabi}}}"
#define TARGET_LINKER_EABI_SUFFIX_HARD \
"%{!mabi=apcs-gnu:%{!mabi=atpcs:%{mfloat-abi=soft:_eabi;:_eabihf}}}"
#define TARGET_LINKER_EABI_SUFFIX \
(TARGET_DEFAULT_FLOAT_ABI == ARM_FLOAT_ABI_SOFT \
? TARGET_LINKER_EABI_SUFFIX_SOFT \
: TARGET_LINKER_EABI_SUFFIX_HARD)
#define TARGET_LINKER_BIG_EMULATION "armelfb_nbsd%(linker_eabi_suffix)"
#define TARGET_LINKER_LITTLE_EMULATION "armelf_nbsd%(linker_eabi_suffix)"
/* TARGET_BIG_ENDIAN_DEFAULT is set in
config.gcc for big endian configurations. */
#undef TARGET_LINKER_EMULATION
#if TARGET_BIG_ENDIAN_DEFAULT
#define TARGET_LINKER_EMULATION TARGET_LINKER_BIG_EMULATION
#else
#define TARGET_LINKER_EMULATION TARGET_LINKER_LITTLE_EMULATION
#endif
#undef ARM_DEFAULT_ABI
#define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX
#undef ARM_UNWIND_INFO
#define ARM_UNWIND_INFO 0
#undef DWARF2_UNWIND_INFO
#define DWARF2_UNWIND_INFO 1
#undef TARGET_OS_CPP_BUILTINS
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
if (TARGET_AAPCS_BASED) \
TARGET_BPABI_CPP_BUILTINS(); \
NETBSD_OS_CPP_BUILTINS_ELF(); \
if (DWARF2_UNWIND_INFO) \
builtin_define ("__ARM_DWARF_EH__"); \
} \
while (0)
#undef SUBTARGET_CPP_SPEC
#define SUBTARGET_CPP_SPEC NETBSD_CPP_SPEC
/*
* Override AAPCS types to remain compatible the existing NetBSD types.
*/
#undef WCHAR_TYPE
#define WCHAR_TYPE "int"
#undef SIZE_TYPE
#define SIZE_TYPE "long unsigned int"
#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE "long int"
#undef SUBTARGET_EXTRA_ASM_SPEC
#define SUBTARGET_EXTRA_ASM_SPEC \
"%{mabi=apcs-gnu|mabi=atpcs:-meabi=gnu} " \
"%{fpic|fpie:-k} " \
"%{fPIC|fPIE:-k}"
#undef SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS \
{ "subtarget_extra_asm_spec", SUBTARGET_EXTRA_ASM_SPEC }, \
{ "linker_eabi_suffix", TARGET_LINKER_EABI_SUFFIX }, \
{ "linker_emulation", TARGET_LINKER_EMULATION }, \
{ "linker_big_emulation", TARGET_LINKER_BIG_EMULATION }, \
{ "linker_little_emulation", TARGET_LINKER_LITTLE_EMULATION }, \
{ "target_fix_v4bx_spec", TARGET_FIX_V4BX_SPEC }, \
NETBSD_SUBTARGET_EXTRA_SPECS
#define NETBSD_ENTRY_POINT "__start"
#undef LINK_SPEC
#define LINK_SPEC \
"-X %{mbig-endian:-EB -m %(linker_big_emulation)} " \
"%{mlittle-endian:-EL -m %(linker_liitle_emulation)} " \
"%{!mbig-endian:%{!mlittle-endian:-m %(linker_emulation)}} " \
"%(target_fix_v4bx_spec) %(netbsd_link_spec)"

3
gcc/config/arm/netbsd-elf.h
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@ -43,6 +43,7 @@
#undef ARM_DEFAULT_ABI
#define ARM_DEFAULT_ABI ARM_ABI_ATPCS
#undef TARGET_OS_CPP_BUILTINS
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
@ -55,7 +56,7 @@
#undef SUBTARGET_EXTRA_ASM_SPEC
#define SUBTARGET_EXTRA_ASM_SPEC \
"-matpcs %{" FPIE_OR_FPIC_SPEC ":-k}"
"%{" FPIE_OR_FPIC_SPEC ":-k}"
/* Default to full VFP if -mfloat-abi=hard is specified. */
#undef SUBTARGET_ASM_FLOAT_SPEC

14
gcc/config/netbsd-elf.h
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@ -73,6 +73,9 @@ along with GCC; see the file COPYING3. If not see
Target-specific code must provide the %(netbsd_entry_point) spec. */
#define NETBSD_LINK_LD_ELF_SO_SPEC \
"%{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}"
#define NETBSD_LINK_SPEC_ELF \
"%{assert*} %{R*} %{rpath*} \
%{shared:-shared} \
@ -87,6 +90,17 @@ along with GCC; see the file COPYING3. If not see
-dynamic-linker /usr/libexec/ld.elf_so} \
%{static:-static}}"
/* Provide the standard list of subtarget extra specs for NetBSD targets. */
#define NETBSD_SUBTARGET_EXTRA_SPECS \
{ "netbsd_link_ld_elf_so", NETBSD_LINK_LD_ELF_SO_SPEC }, \
{ "netbsd_cpp_spec", NETBSD_CPP_SPEC }, \
{ "netbsd_link_spec", NETBSD_LINK_SPEC_ELF }, \
{ "netbsd_entry_point", NETBSD_ENTRY_POINT }, \
{ "netbsd_endfile_spec", NETBSD_ENDFILE_SPEC },
#undef SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS NETBSD_SUBTARGET_EXTRA_SPECS
/* Use --as-needed -lgcc_s for eh support. */
#ifdef HAVE_LD_AS_NEEDED
#define USE_LD_AS_NEEDED 1

7
libatomic/ChangeLog
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@ -1,3 +1,10 @@
2019-06-14 Matt Thomas <matt@3am-software.com>
Matthew Green <mrg@eterna.com.au>
Nick Hudson <skrll@netbsd.org>
Maya Rashish <coypu@sdf.org>
* configure.tgt (arm*): Handle NetBSD in the same way as FreeBSD.
2019-01-01 Jakub Jelinek <jakub@redhat.com>
Update copyright years.

2
libatomic/configure.tgt
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@ -53,7 +53,7 @@ case "${target_cpu}" in
arm*)
ARCH=arm
case "${target}" in
arm*-*-freebsd*)
arm*-*-freebsd* | arm*-*-netbsd*)
;;
*)
# ??? Detect when -march=armv7 is already enabled.

10
libgcc/ChangeLog
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@ -1,3 +1,13 @@
2019-06-14 Matt Thomas <matt@3am-software.com>
Matthew Green <mrg@eterna.com.au>
Nick Hudson <skrll@netbsd.org>
Maya Rashish <coypu@sdf.org>
* config.host (arm*-*-netbsdelf*): Add support for EABI configurations.
* config/arm/t-netbsd (LIB1ASMFUNCS): Add some additional assembler
functions to build.
* config/arm/t-netbsd-eabi: New file.
2019-06-12 Dimitar Dimitrov <dimitar@dinux.eu>
* config.host: Add PRU target.

11
libgcc/config.host
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@ -436,7 +436,16 @@ arm*-*-fuchsia*)
unwind_header=config/arm/unwind-arm.h
;;
arm*-*-netbsdelf*)
tmake_file="$tmake_file arm/t-arm arm/t-netbsd t-slibgcc-gld-nover"
tmake_file="$tmake_file arm/t-arm"
case ${host} in
arm*-*-netbsdelf-*eabi*)
tmake_file="${tmake_file} arm/t-netbsd-eabi"
unwind_header=config/arm/unwind-arm.h
;;
*)
tmake_file="${tmake_file} arm/t-netbsd t-slibgcc-gld-nover"
;;
esac
;;
arm*-*-linux*) # ARM GNU/Linux with ELF
tmake_file="${tmake_file} arm/t-arm t-fixedpoint-gnu-prefix t-crtfm"

8
libgcc/config/arm/t-netbsd
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@ -1,3 +1,11 @@
# This list is from t-elf, but with some things removed.
LIB1ASMFUNCS += _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_tls _bb_init_func \
_call_via_rX _interwork_call_via_rX \
_arm_fixunsdfsi _arm_fixunssfsi \
_arm_floatdidf _arm_floatdisf _arm_floatundidf _arm_floatundisf \
_lshrdi3 _ashrdi3 _ashldi3 \
_clzsi2 _clzdi2 _ctzsi2
# 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

18
libgcc/config/arm/t-netbsd-eabi Normal file
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@ -0,0 +1,18 @@
# This list is from t-elf, but with lots removed.
LIB1ASMFUNCS += _dvmd_tls _bb_init_func _call_via_rX _interwork_call_via_rX \
_clzsi2 _clzdi2 _ctzsi2
# Derived from t-bpabi
# Add the BPABI C functions.
LIB2ADD += $(srcdir)/config/arm/unaligned-funcs.c
# Not using libgcc for EH.
LIB2ADDEH =
# Add the BPABI names.
SHLIB_MAPFILES += $(srcdir)/config/arm/libgcc-bpabi.ver
# On ARM, specifying -fnon-call-exceptions will needlessly pull in
# the unwinder in simple programs which use 64-bit division. Omitting
# the option is safe.
LIB2_DIVMOD_EXCEPTION_FLAGS := -fexceptions