$NetBSD: patch-gcc_config_arm_netbsd-eabi.h,v 1.1 2018/06/17 19:50:52 maya Exp $

netbsd/arm EABI support

--- gcc/config/arm/netbsd-eabi.h.orig	2018-02-02 18:49:57.566284082 +0000
+++ gcc/config/arm/netbsd-eabi.h
@@ -0,0 +1,112 @@
+/* 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 \
+    (TARGET_DEFAULT_FLOAT_ABI == ARM_FLOAT_ABI_SOFT \
+     ? "%{!mabi=apcs-gnu:%{!mabi=atpcs:%{mfloat-abi=hard:_eabihf;:_eabi}}}" \
+     : "%{!mabi=apcs-gnu:%{!mabi=atpcs:%{mfloat-abi=soft:_eabi;:_eabihf}}}")
+#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
+#undef BE8_LINK_SPEC
+#define BE8_LINK_SPEC " %{!mlittle-endian:%{march=armv7-a|mcpu=cortex-a5|mcpu=cortex-a8|mcpu=cortex-a9:%{!r:--be8}}}" 
+#else
+#define TARGET_LINKER_EMULATION TARGET_LINKER_LITTLE_EMULATION
+#endif
+
+#undef ARM_DEFAULT_ABI
+#define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX
+
+#undef ARM_EABI_UNWIND_TABLES
+#define ARM_EABI_UNWIND_TABLES 0
+#undef ARM_UNWIND_INFO
+#define ARM_UNWIND_INFO 0
+#undef ARM_DWARF_UNWIND_TABLES
+#define ARM_DWARF_UNWIND_TABLES 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 (ARM_DWARF_UNWIND_TABLES)		\
+	builtin_define ("__ARM_DWARF_EH__");	\
+      if (ARM_EABI_UNWIND_TABLES)		\
+	builtin_define ("__UNWIND_TABLES__");	\
+    }						\
+  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	\
+  "-matpcs %{mabi=apcs-gnu|mabi=atpcs:-meabi=gnu} %{fpic|fpie:-k} %{fPIC|fPIE:-k}"
+
+/* Default to full VFP if -mhard-float is specified.  */
+#undef SUBTARGET_ASM_FLOAT_SPEC
+#define SUBTARGET_ASM_FLOAT_SPEC	\
+  "%{mhard-float:%{!mfpu=*:-mfpu=vfp}}   \
+   %{mfloat-abi=hard:%{!mfpu=*:-mfpu=vfp}}"
+
+#undef SUBTARGET_EXTRA_SPECS
+#define SUBTARGET_EXTRA_SPECS				\
+  { "subtarget_extra_asm_spec",	SUBTARGET_EXTRA_ASM_SPEC }, \
+  { "subtarget_asm_float_spec", SUBTARGET_ASM_FLOAT_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 }, \
+  { "be8_link_spec",		BE8_LINK_SPEC }, \
+  { "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)}} \
+   %(be8_link_spec) %(target_fix_v4bx_spec) \
+   %(netbsd_link_spec)"