[ARM] Add armelf_linux_fdpiceabi and armelfb_linux_fdpiceabi BFD backends

Initial definition of these new backends.

2018-04-25  Christophe Lyon  <christophe.lyon@st.com>
	Mickaël Guêné  <mickael.guene@st.com>

	bfd/
	* config.bfd (arm*-*-linux-*): Add arm_elf32_fdpic_be_vec and
	arm_elf32_fdpic_le_vec to targ_selvecs. Accept
	arm*-*-uclinuxfdpiceabi.
	* configure.ac: Add support for arm_elf32_fdpic_be_vec and
	arm_elf32_fdpic_le_vec.
	* configure: Regenerate.
	* elf32-arm.c (struct elf32_arm_link_hash_table): Add fdpic_p.
	(elf32_arm_link_hash_table_create): Initialize fdpic_p.
	(TARGET_LITTLE_SYM, TARGET_LITTLE_NAME, TARGET_BIG_SYM)
	(TARGET_BIG_NAME, elf_match_priority): Define for FDPIC targets.
	(elf32_arm_fdpic_link_hash_table_create): New.
	* targets.c (_bfd_target_vector): Add arm_elf32_fdpic_be_vec and
	arm_elf32_fdpic_le_vec.

	ld/
	* Makefile.am (ALL_EMULATION_SOURCES): Add
	earmelf_linux_fdpiceabi.c and earmelfb_linux_fdpiceabi.c.
	(earmelf_linux_fdpiceabi.c, earmelfb_linux_fdpiceabi.c): New rules.
	* Makefile.in: Regenerate.
	* configure.tgt (arm*-*-uclinuxfdpiceabi): Handle new target.
	* emulparams/armelf_linux_fdpiceabi.sh: New.
	* emulparams/armelfb_linux_fdpiceabi.sh: New.

6 files changed, 60 insertions, 1 deletions

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 23843c1..e633941 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,14 @@
+2018-04-25  Christophe Lyon  <christophe.lyon@st.com>
+	Mickaël Guêné  <mickael.guene@st.com>
+
+	* Makefile.am (ALL_EMULATION_SOURCES): Add
+	earmelf_linux_fdpiceabi.c and earmelfb_linux_fdpiceabi.c.
+	(earmelf_linux_fdpiceabi.c, earmelfb_linux_fdpiceabi.c): New rules.
+	* Makefile.in: Regenerate.
+	* configure.tgt (arm*-*-uclinuxfdpiceabi): Handle new target.
+	* emulparams/armelf_linux_fdpiceabi.sh: New.
+	* emulparams/armelfb_linux_fdpiceabi.sh: New.
+
 2018-04-25  Alan Modra  <amodra@gmail.com>
 
 	* Makefile.am: Remove arm-aout and arm-coff support.
diff --git a/ld/Makefile.am b/ld/Makefile.am
index a905b15..6464e10 100644
--- a/ld/Makefile.am
+++ b/ld/Makefile.am
@@ -172,6 +172,7 @@ ALL_EMULATION_SOURCES = \
 	earmelf_fuchsia.c \
 	earmelf_linux.c \
 	earmelf_linux_eabi.c \
+	earmelf_linux_fdpiceabi.c \
 	earmelf_nacl.c \
 	earmelf_nbsd.c \
 	earmelf_phoenix.c \
@@ -181,6 +182,7 @@ ALL_EMULATION_SOURCES = \
 	earmelfb_fuchsia.c \
 	earmelfb_linux.c \
 	earmelfb_linux_eabi.c \
+	earmelfb_linux_fdpiceabi.c \
 	earmelfb_nacl.c \
 	earmelfb_nbsd.c \
 	earmnto.c \
@@ -703,6 +705,11 @@ earmelf_linux_eabi.c: $(srcdir)/emulparams/armelf_linux_eabi.sh \
   $(ELF_DEPS) $(srcdir)/emultempl/armelf.em \
   $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
 
+earmelf_linux_fdpiceabi.c: $(srcdir)/emulparams/armelf_linux_fdpiceabi.sh \
+  $(srcdir)/emulparams/armelf_linux.sh \
+  $(ELF_DEPS) $(srcdir)/emultempl/armelf.em \
+  $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+
 earmelf_nacl.c: $(srcdir)/emulparams/armelf_nacl.sh \
   $(srcdir)/emulparams/armelf_linux_eabi.sh \
   $(srcdir)/emulparams/armelf_linux.sh \
@@ -749,6 +756,12 @@ earmelfb_linux_eabi.c: $(srcdir)/emulparams/armelfb_linux_eabi.sh \
   $(ELF_DEPS) $(srcdir)/emultempl/armelf.em \
   $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
 
+earmelfb_linux_fdpiceabi.c: $(srcdir)/emulparams/armelfb_linux_fdpiceabi.sh \
+  $(srcdir)/emulparams/armelfb_linux_fdpiceabi.sh \
+  $(srcdir)/emulparams/armelf_linux.sh \
+  $(ELF_DEPS) $(srcdir)/emultempl/armelf.em \
+  $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+
 earmelfb_nacl.c: $(srcdir)/emulparams/armelfb_nacl.sh \
   $(srcdir)/emulparams/armelf_nacl.sh \
   $(srcdir)/emulparams/armelf_linux_eabi.sh \
diff --git a/ld/Makefile.in b/ld/Makefile.in
index d2201ac..8e0122c 100644
--- a/ld/Makefile.in
+++ b/ld/Makefile.in
@@ -541,6 +541,7 @@ ALL_EMULATION_SOURCES = \
 	earmelf_fuchsia.c \
 	earmelf_linux.c \
 	earmelf_linux_eabi.c \
+	earmelf_linux_fdpiceabi.c \
 	earmelf_nacl.c \
 	earmelf_nbsd.c \
 	earmelf_phoenix.c \
@@ -550,6 +551,7 @@ ALL_EMULATION_SOURCES = \
 	earmelfb_fuchsia.c \
 	earmelfb_linux.c \
 	earmelfb_linux_eabi.c \
+	earmelfb_linux_fdpiceabi.c \
 	earmelfb_nacl.c \
 	earmelfb_nbsd.c \
 	earmnto.c \
@@ -1086,6 +1088,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelf_fuchsia.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelf_linux.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelf_linux_eabi.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelf_linux_fdpiceabi.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelf_nacl.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelf_nbsd.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelf_phoenix.Po@am__quote@
@@ -1095,6 +1098,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelfb_fuchsia.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelfb_linux.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelfb_linux_eabi.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelfb_linux_fdpiceabi.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelfb_nacl.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelfb_nbsd.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmnto.Po@am__quote@
@@ -2202,6 +2206,11 @@ earmelf_linux_eabi.c: $(srcdir)/emulparams/armelf_linux_eabi.sh \
   $(ELF_DEPS) $(srcdir)/emultempl/armelf.em \
   $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
 
+earmelf_linux_fdpiceabi.c: $(srcdir)/emulparams/armelf_linux_fdpiceabi.sh \
+  $(srcdir)/emulparams/armelf_linux.sh \
+  $(ELF_DEPS) $(srcdir)/emultempl/armelf.em \
+  $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+
 earmelf_nacl.c: $(srcdir)/emulparams/armelf_nacl.sh \
   $(srcdir)/emulparams/armelf_linux_eabi.sh \
   $(srcdir)/emulparams/armelf_linux.sh \
@@ -2248,6 +2257,12 @@ earmelfb_linux_eabi.c: $(srcdir)/emulparams/armelfb_linux_eabi.sh \
   $(ELF_DEPS) $(srcdir)/emultempl/armelf.em \
   $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
 
+earmelfb_linux_fdpiceabi.c: $(srcdir)/emulparams/armelfb_linux_fdpiceabi.sh \
+  $(srcdir)/emulparams/armelf_linux_fdpiceabi.sh \
+  $(srcdir)/emulparams/armelf_linux.sh \
+  $(ELF_DEPS) $(srcdir)/emultempl/armelf.em \
+  $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+
 earmelfb_nacl.c: $(srcdir)/emulparams/armelfb_nacl.sh \
   $(srcdir)/emulparams/armelf_nacl.sh \
   $(srcdir)/emulparams/armelf_linux_eabi.sh \
diff --git a/ld/configure.tgt b/ld/configure.tgt
index 1b45611..1999010 100644
--- a/ld/configure.tgt
+++ b/ld/configure.tgt
@@ -129,7 +129,12 @@ arm*b-*-linux-*)	targ_emul=armelfb_linux
 			targ_extra_libpath="armelf_linux"
 			;;
 arm*-*-linux-*eabi*)	targ_emul=armelf_linux_eabi
-			targ_extra_emuls=armelfb_linux_eabi
+			targ_extra_emuls="armelfb_linux_eabi"
+			targ_extra_libpath=$targ_extra_emuls
+			;;
+arm*-*-uclinuxfdpiceabi)
+			targ_emul=armelf_linux_eabi
+			targ_extra_emuls="armelfb_linux_eabi armelf_linux_fdpiceabi armelfb_linux_fdpiceabi"
 			targ_extra_libpath=$targ_extra_emuls
 			;;
 arm*-*-linux-*)		targ_emul=armelf_linux
diff --git a/ld/emulparams/armelf_linux_fdpiceabi.sh b/ld/emulparams/armelf_linux_fdpiceabi.sh
new file mode 100644
index 0000000..104cf38
--- /dev/null
+++ b/ld/emulparams/armelf_linux_fdpiceabi.sh
@@ -0,0 +1,13 @@
+. ${srcdir}/emulparams/armelf_linux.sh
+
+OUTPUT_FORMAT="elf32-littlearm-fdpic"
+BIG_OUTPUT_FORMAT="elf32-bigarm-fdpic"
+LITTLE_OUTPUT_FORMAT="elf32-littlearm-fdpic"
+
+# Use the ARM ABI-compliant exception-handling sections.
+OTHER_READONLY_SECTIONS="
+  .ARM.extab ${RELOCATING-0} : { *(.ARM.extab${RELOCATING+* .gnu.linkonce.armextab.*}) }
+  ${RELOCATING+ PROVIDE_HIDDEN (__exidx_start = .); }
+  .ARM.exidx ${RELOCATING-0} : { *(.ARM.exidx${RELOCATING+* .gnu.linkonce.armexidx.*}) }
+  ${RELOCATING+ PROVIDE_HIDDEN (__exidx_end = .); }"
+
diff --git a/ld/emulparams/armelfb_linux_fdpiceabi.sh b/ld/emulparams/armelfb_linux_fdpiceabi.sh
new file mode 100644
index 0000000..988ea7a
--- /dev/null
+++ b/ld/emulparams/armelfb_linux_fdpiceabi.sh
@@ -0,0 +1,2 @@
+. ${srcdir}/emulparams/armelf_linux_fdpiceabi.sh
+OUTPUT_FORMAT="elf32-bigarm-fdpic"