[27/30,arm,fuchsia] Rework multilib support

Message ID	ba65c9dbb96ec5b5a9b179ae4e39af2319487f5e.1497004220.git.Richard.Earnshaw@arm.com
State	New
Headers	show Delivered-To: patch@linaro.org Received-SPF: pass (google.com: domain of gcc-patches-return-455536-patch=linaro.org@gcc.gnu.org designates 209.132.180.131 as permitted sender) client-ip=209.132.180.131; DomainKey-Signature: a=rsa-sha1; c=nofws; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:from :to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references:mime-version:content-type; q=dns; s= default; b=SLQZMdrS7HHvz7pQlgGbeLYFUtIWgDYRNj0ADywsEvxfAHjmN/B9M yCWbU+2We2eO+1pHPLymMsdNY//8UaOhQVy2sgqFER9X7UDa8sXkd0BazGN5x20G /1iL+YqkIzJ3+0miPeV1I11LoSiaVA1vUbnGlYrL9vwb8vLfOqcFhA= Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk Sender: gcc-patches-owner@gcc.gnu.org From: Richard Earnshaw <Richard.Earnshaw@arm.com> To: gcc-patches@gcc.gnu.org Cc: Richard Earnshaw <Richard.Earnshaw@arm.com>, Joshua Conner <joshconner@google.com> Subject: [PATCH 27/30] [arm][fuchsia] Rework multilib support Date: Fri, 9 Jun 2017 13:53:56 +0100 Message-Id: <ba65c9dbb96ec5b5a9b179ae4e39af2319487f5e.1497004220.git.Richard.Earnshaw@arm.com> In-Reply-To: <cover.1497004220.git.Richard.Earnshaw@arm.com> References: <cover.1497004220.git.Richard.Earnshaw@arm.com> In-Reply-To: <cover.1497004220.git.Richard.Earnshaw@arm.com> References: <cover.1497004220.git.Richard.Earnshaw@arm.com> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="------------2.7.4"
Series	Reworking the -mcpu, -march and -mfpu options \| expand [00/30,ARM] Reworking the -mcpu, -march and -mfpu options [01/30,arm] Use strings for -march, -mcpu and -mtune options [02/30,arm] Rewrite -march and -mcpu options for passing to the assembler [03/30,arm] Don't pass -mfpu=auto through to the assembler. [04/30,arm] Allow +opt on arbitrary cpu and architecture specifications [05/30,arm] Add architectural options [06/30,arm] Add default FPUs for CPUs. [07/30,build] Make sbitmap code available to the driver programs [08/30,arm] Split CPU, architecture and tuning data tables. [09/30,ARM] Move cpu and architecture option name parsing code to arm-common.c [10/30,arm] Use standard option parsing code for detecting thumb-only targets [11/30,arm] Allow CPU and architecture extensions to be defined as aliases [12/30,arm] Allow new extended syntax CPU and architecture names during configure [13/30,arm] Force a CPU default in the config args defaults list. [14/30,arm] Generate a canonical form for -march [15/30,arm] Make -mfloat-abi=softfp work when there are no FPU instructions [16/30,arm] Update basic multilib configuration [17/30,arm] Make 'auto' the default FPU selection option. [18/30,arm] Rewrite t-aprofile using new selector methodology [19/30,arm] Explicitly set .fpu in cmse_nonsecure_call.S [20/30,genmultilib] Allow explicit periods to be escaped in MULTILIB_REUSE [21/30,arm,testsuite] Use -march=armv7-a+fp when testing hard-float ABI. [22/30,arm] Rewrite t-rmprofile multilib specification [23/30,arm,rtems] Update t-rtems for new option framework [24/30,arm,linux-eabi] Ensure all multilib variables are reset [25/30,arm,phoenix] reset all multilib variables [26/30,arm] Rework multlib builds for symbianelf [27/30,arm,fuchsia] Rework multilib support [28/30,arm] Add a few missing architecture extension options. [29/30,arm,doc] Document new -march= syntax. [30/30,arm,doc] Document changes to -mcpu, -mtune and -mfpu.

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ba65c9dbb96ec5b5a9b179ae4e39af2319487f5e.1497004220.git.Richard.Earnshaw@arm.com

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Subject: [PATCH 27/30] [arm][fuchsia] Rework multilib support
Date: Fri,  9 Jun 2017 13:53:56 +0100
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Series

Reworking the -mcpu, -march and -mfpu options | expand

Commit Message

Richard Earnshaw (lists) June 9, 2017, 12:53 p.m. UTC

It looks like the fuchsia port relied on inheriting the multilib rules from
the bare-metal port (the t-arm-elf makefile fragment), but that has now been
rewritten on the assuption that the base architecture is ARMv4t; fuchsia
has a base architecture of ARMv7-a.

To account for this, I've cloned the original t-arm-elf rules into a
new makefile fragment t-fuchsia and arranged for that to be used when
targetting this system.

	* config/arm/t-fuchsia: New file.
	* config.gcc (arm*-*-fuchsia*): Use it.
---
 gcc/config.gcc           |  2 +-
 gcc/config/arm/t-fuchsia | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+), 1 deletion(-)
 create mode 100644 gcc/config/arm/t-fuchsia

diff --git a/gcc/config.gcc b/gcc/config.gcc
index b6dcbcd..967ea77 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1158,7 +1158,7 @@  arm*-*-eabi* | arm*-*-symbianelf* | arm*-*-rtems* | arm*-*-fuchsia*)
 	  ;;
 	arm*-*-fuchsia*)
 	  tm_file="${tm_file} fuchsia.h arm/fuchsia-elf.h glibc-stdint.h"
-	  tmake_file="${tmake_file} arm/t-bpabi"
+	  tmake_file="${tmake_file} arm/t-bpabi arm/t-fuchsia"
 	  target_cpu_cname="generic-armv7-a"
 	  ;;
 	arm*-*-rtems*)
diff --git a/gcc/config/arm/t-fuchsia b/gcc/config/arm/t-fuchsia
new file mode 100644
index 0000000..18fc518
--- /dev/null
+++ b/gcc/config/arm/t-fuchsia
@@ -0,0 +1,33 @@ 
+# Copyright (C) 2017 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/>.
+
+# Reset all the multilib variables.
+MULTILIB_OPTIONS	=
+MULTILIB_DIRNAMES	=
+MULTILIB_EXCEPTIONS	=
+MULTILIB_REUSE		=
+MULTILIB_MATCHES	=
+MULTILIB_REQUIRED	=
+
+# For compatibility with gcc-7 we build the following multilibs
+MULTILIB_OPTIONS	+= marm/mthumb
+MULTILIB_DIRNAMES	+= arm thumb
+
+MULTILIB_OPTIONS	+= mfloat-abi=hard
+MULTILIB_DIRNAMES	+= fpu
+MULTILIB_EXCEPTIONS	+= *mthumb/*mfloat-abi=hard*

[27/30,arm,fuchsia] Rework multilib support

Commit Message

Patch