[PATCH 1/5] configure: add new target aarch64-*-nto*

[Clément Chigot]

This target has its own ld emulation based on aarch64elf.em.
---
 bfd/config.bfd              |  2 +-
 gas/configure.tgt           |  1 +
 ld/Makefile.am              |  2 ++
 ld/Makefile.in              |  3 +++
 ld/configure.tgt            |  3 +++
 ld/emulparams/aarch64nto.sh | 41 +++++++++++++++++++++++++++++++++++++
 6 files changed, 51 insertions(+), 1 deletion(-)
 create mode 100644 ld/emulparams/aarch64nto.sh

diff --git a/bfd/config.bfd b/bfd/config.bfd
index 0b0f7d50602..7af481048db 100644
--- a/bfd/config.bfd
+++ b/bfd/config.bfd
@@ -283,7 +283,7 @@ case "${targ}" in
     targ_selvecs="aarch64_elf64_be_vec aarch64_elf32_le_vec aarch64_elf32_be_vec arm_elf32_le_vec arm_elf32_be_vec"
     want64=true
     ;;
-  aarch64-*-linux* | aarch64-*-netbsd*)
+  aarch64-*-linux* | aarch64-*-netbsd* | aarch64-*-nto*)
     targ_defvec=aarch64_elf64_le_vec
     targ_selvecs="aarch64_elf64_be_vec aarch64_elf32_le_vec aarch64_elf32_be_vec arm_elf32_le_vec arm_elf32_be_vec aarch64_pei_le_vec aarch64_pe_le_vec"
     want64=true
diff --git a/gas/configure.tgt b/gas/configure.tgt
index 5fb7d880122..3429f850d05 100644
--- a/gas/configure.tgt
+++ b/gas/configure.tgt
@@ -134,6 +134,7 @@ case ${generic_target} in
       aarch64*-linux-gnu_ilp32)		arch=aarch64:32 ;;
     esac ;;
   aarch64*-*-netbsd*)			fmt=elf em=nbsd;;
+  aarch64*-*-nto*)			fmt=elf;;
   aarch64*-*-openbsd*)			fmt=elf;;
   aarch64*-*-pe* | aarch64*-*-mingw*)	fmt=coff em=pepaarch64 ;;
   alpha-*-*vms*)			fmt=evax ;;
diff --git a/ld/Makefile.am b/ld/Makefile.am
index d9449a66066..0e9bed88f65 100644
--- a/ld/Makefile.am
+++ b/ld/Makefile.am
@@ -388,6 +388,7 @@ ALL_64_EMULATION_SOURCES = \
 	eaarch64linux32.c \
 	eaarch64linux32b.c \
 	eaarch64linuxb.c \
+	eaarch64nto.c \
 	eaarch64pe.c \
 	earm64pe.c \
 	eelf32_x86_64.c \
@@ -881,6 +882,7 @@ $(ALL_EMULATION_SOURCES) $(ALL_64_EMULATION_SOURCES): $(GEN_DEPENDS)
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64linux32.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64linux32b.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64linuxb.Pc@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64nto.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64pe.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earm64pe.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32_x86_64.Pc@am__quote@
diff --git a/ld/Makefile.in b/ld/Makefile.in
index 0a2981616f0..15f88bf606d 100644
--- a/ld/Makefile.in
+++ b/ld/Makefile.in
@@ -888,6 +888,7 @@ ALL_64_EMULATION_SOURCES = \
 	eaarch64linux32.c \
 	eaarch64linux32b.c \
 	eaarch64linuxb.c \
+	eaarch64nto.c \
 	eaarch64pe.c \
 	earm64pe.c \
 	eelf32_x86_64.c \
@@ -1266,6 +1267,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64linux32.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64linux32b.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64linuxb.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64nto.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64pe.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaix5ppc.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaix5rs6.Po@am__quote@
@@ -2597,6 +2599,7 @@ $(ALL_EMULATION_SOURCES) $(ALL_64_EMULATION_SOURCES): $(GEN_DEPENDS)
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64linux32.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64linux32b.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64linuxb.Pc@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64nto.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64pe.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earm64pe.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32_x86_64.Pc@am__quote@
diff --git a/ld/configure.tgt b/ld/configure.tgt
index efd43095844..34c9d67c365 100644
--- a/ld/configure.tgt
+++ b/ld/configure.tgt
@@ -118,6 +118,9 @@ aarch64-*-linux*)	targ_emul=aarch64linux
 aarch64-*-haiku*)	targ_emul=aarch64haiku
 			targ_extra_emuls="aarch64elf aarch64elf32 aarch64elf32b aarch64elfb armelf armelfb armelf_haiku $targ_extra_libpath"
 			;;
+aarch64-*-nto*)		targ_emul=aarch64nto
+			targ_extra_emuls="aarch64elf aarch64elf32 aarch64elf32b aarch64elfb armelf armelfb"
+			;;
 aarch64-*-pe* | aarch64-*-mingw*)
 			targ_emul=aarch64pe
 			targ_extra_emuls="arm64pe"
diff --git a/ld/emulparams/aarch64nto.sh b/ld/emulparams/aarch64nto.sh
new file mode 100644
index 00000000000..4f0657def55
--- /dev/null
+++ b/ld/emulparams/aarch64nto.sh
@@ -0,0 +1,41 @@
+ARCH=aarch64
+MACHINE=
+NOP=0x1f2003d5
+
+SCRIPT_NAME=elf
+ELFSIZE=64
+OUTPUT_FORMAT="elf64-littleaarch64"
+BIG_OUTPUT_FORMAT="elf64-bigaarch64"
+LITTLE_OUTPUT_FORMAT="elf64-littleaarch64"
+NO_REL_RELOCS=yes
+
+TEMPLATE_NAME=elf
+EXTRA_EM_FILE=aarch64elf
+
+GENERATE_SHLIB_SCRIPT=yes
+GENERATE_PIE_SCRIPT=yes
+
+MAXPAGESIZE="CONSTANT (MAXPAGESIZE)"
+COMMONPAGESIZE="CONSTANT (COMMONPAGESIZE)"
+SEPARATE_GOTPLT="SIZEOF (.got.plt) >= 24 ? 24 : 0"
+IREL_IN_PLT=
+
+TEXT_START_ADDR=0x400000
+
+TEXT_START_SYMBOLS='PROVIDE (_btext = .);'
+DATA_START_SYMBOLS='PROVIDE (__data_start = .);';
+
+# AArch64 does not support .s* sections.
+NO_SMALL_DATA=yes
+
+OTHER_BSS_SYMBOLS="${CREATE_SHLIB+PROVIDE (}__bss_start__ = .${CREATE_SHLIB+)};"
+OTHER_BSS_END_SYMBOLS="${CREATE_SHLIB+PROVIDE (}_bss_end__ = .${CREATE_SHLIB+)}; ${CREATE_SHLIB+PROVIDE (}__bss_end__ = .${CREATE_SHLIB+)};"
+OTHER_END_SYMBOLS="${CREATE_SHLIB+PROVIDE (}__end__ = .${CREATE_SHLIB+)};"
+
+OTHER_SECTIONS='.note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) }'
+ATTRS_SECTIONS='.ARM.attributes 0 : { KEEP (*(.ARM.attributes)) KEEP (*(.gnu.attributes)) }'
+# Ensure each PLT entry is aligned to a cache line.
+PLT=".plt          ${RELOCATING-0} : ALIGN(16) { *(.plt)${RELOCATING+${IREL_IN_PLT+ *(.iplt)}} }"
+
+
+ELF_INTERPRETER_NAME=\"/usr/lib/ldqnx-64.so.2\"
-- 
2.25.1