[PATCH] ld: Add rx-linux emulation.

[Yoshinori Sato]

The rx-linux target needs to behave differently than rx-elf.
Add an emulation for that.

ld/ChangeLog
2020-04-25  Yoshinori Sato <ysato@users.sourceforge.jp>

	* emulparams/elf32rx_linux.sh: New rx-linux emulation.
	* emultempl/rxlinux.em: New.
	* configure.tgt: Add rx-linux.
	* Makefile.am: Add eelf32rx_linux.c
	* Makefile.in: Regenerate.
---
 ld/Makefile.am                 |  2 ++
 ld/Makefile.in                 |  2 ++
 ld/configure.tgt               |  2 ++
 ld/emulparams/elf32rx_linux.sh | 17 ++++++++++++++
 ld/emultempl/rxlinux.em        | 42 ++++++++++++++++++++++++++++++++++
 5 files changed, 65 insertions(+)
 create mode 100644 ld/emulparams/elf32rx_linux.sh
 create mode 100644 ld/emultempl/rxlinux.em

diff --git a/ld/Makefile.am b/ld/Makefile.am
index a64899fc09..e3ef6865c0 100644
--- a/ld/Makefile.am
+++ b/ld/Makefile.am
@@ -277,6 +277,7 @@ ALL_EMULATION_SOURCES = \
 	eelf32lriscv_ilp32.c \
 	eelf32rl78.c \
 	eelf32rx.c \
+	eelf32rx_linux.c \
 	eelf32tilegx.c \
 	eelf32tilegx_be.c \
 	eelf32tilepro.c \
@@ -766,6 +767,7 @@ $(ALL_EMULATION_SOURCES) $(ALL_64_EMULATION_SOURCES): $(GEN_DEPENDS)
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32lriscv_ilp32.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32rl78.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32rx.Pc@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32rx_linux.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32tilegx.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32tilegx_be.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32tilepro.Pc@am__quote@
diff --git a/ld/Makefile.in b/ld/Makefile.in
index b34455b1f8..51fdd964cc 100644
--- a/ld/Makefile.in
+++ b/ld/Makefile.in
@@ -767,6 +767,7 @@ ALL_EMULATION_SOURCES = \
 	eelf32lriscv_ilp32.c \
 	eelf32rl78.c \
 	eelf32rx.c \
+	eelf32rx_linux.c \
 	eelf32tilegx.c \
 	eelf32tilegx_be.c \
 	eelf32tilepro.c \
@@ -1346,6 +1347,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32ppcwindiss.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32rl78.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32rx.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32rx_linux.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32tilegx.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32tilegx_be.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32tilepro.Po@am__quote@
diff --git a/ld/configure.tgt b/ld/configure.tgt
index ced5d1f992..0b6ee8bc87 100644
--- a/ld/configure.tgt
+++ b/ld/configure.tgt
@@ -775,6 +775,8 @@ rs6000-*-aix*)		targ_emul=aixrs6
 			;;
 rl78-*-*)		targ_emul=elf32rl78
 			;;
+rx-*-linux*)		targ_emul=elf32rx_linux
+			;;
 rx-*-*)			targ_emul=elf32rx
 			;;
 s12z-*-*)		targ_emul=m9s12zelf
diff --git a/ld/emulparams/elf32rx_linux.sh b/ld/emulparams/elf32rx_linux.sh
new file mode 100644
index 0000000000..3abe4165d5
--- /dev/null
+++ b/ld/emulparams/elf32rx_linux.sh
@@ -0,0 +1,17 @@
+MACHINE=
+SCRIPT_NAME=elf
+OUTPUT_FORMAT="elf32-rx-linux"
+# See also `include/elf/rx.h'
+TEXT_START_ADDR=0x10000000
+ARCH=rx
+ENTRY=start
+EMBEDDED=yes
+TEMPLATE_NAME=elf
+EXTRA_EM_FILE=rxlinux
+ELFSIZE=32
+MAXPAGESIZE=256
+
+STACK_ADDR="(DEFINED(__stack) ? __stack : 0xbffffffc)"
+STACK_SENTINEL="LONG(0xdeaddead)"
+# We do not need .stack for shared library.
+test -n "$CREATE_SHLIB" && unset STACK_ADDR
diff --git a/ld/emultempl/rxlinux.em b/ld/emultempl/rxlinux.em
new file mode 100644
index 0000000000..ee036a17dd
--- /dev/null
+++ b/ld/emultempl/rxlinux.em
@@ -0,0 +1,42 @@
+# This shell script emits a C file. -*- C -*-
+#   Copyright (C) 2020 Free Software Foundation, Inc.
+#
+# This file is part of the GNU Binutils.
+#
+# This program 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 of the License, or
+# (at your option) any later version.
+#
+# This program 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 this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+# MA 02110-1301, USA.
+#
+
+# This file is sourced from elf.em, and defines extra rx-elf
+# specific routines.
+#
+test -z "$TARGET2_TYPE" && TARGET2_TYPE="rel"
+fragment <<EOF
+
+#include "elf32-rx.h"
+
+/* This is a convenient point to tell BFD about target specific flags.
+   After the output has been created, but before inputs are read.  */
+static void
+rx_linux_create_output_section_statements (void)
+{
+  extern void bfd_elf32_rx_set_target_flags (bfd_boolean, bfd_boolean);
+
+  bfd_elf32_rx_set_target_flags (FALSE, FALSE);
+}
+
+EOF
+LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=rx_linux_create_output_section_statements
+
-- 
2.20.1