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[PATCH] Add FreeBSD aarch64 support

From: Ed Maste <emaste at freebsd dot org>
To: binutils at sourceware dot org
Cc: Ed Maste <emaste at freebsd dot org>
Date: Wed, 1 Apr 2015 11:50:34 -0400
Subject: [PATCH] Add FreeBSD aarch64 support
Authentication-results: sourceware.org; auth=none
---
ChangeLog dates need updating and confirmation that Makefile.in is
correct (or just regenerate again).

 bfd/ChangeLog                 |  4 ++++
 bfd/config.bfd                |  5 +++++
 ld/ChangeLog                  |  8 ++++++++
 ld/Makefile.am                | 10 ++++++++++
 ld/Makefile.in                | 12 ++++++++++++
 ld/configure.tgt              |  2 ++
 ld/emulparams/aarch64fbsd.sh  | 37 +++++++++++++++++++++++++++++++++++++
 ld/emulparams/aarch64fbsdb.sh |  2 ++
 8 files changed, 80 insertions(+)
 create mode 100644 ld/emulparams/aarch64fbsd.sh
 create mode 100644 ld/emulparams/aarch64fbsdb.sh

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 9e78a49..c9869ee 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,7 @@
+2015-xx-xx  Andrew Turner  <andrew@freebsd.org>
+
+	* config.bfd: Add aarch64-*-freebsd* target triple.
+	
 2015-04-01  Tejas Belagod  <tejas.belagod@arm.com>
 	    Marcus Shawcroft  <marcus.shawcroft@arm.com>
 	    Jiong Wang  <jiong.wang@arm.com>
diff --git a/bfd/config.bfd b/bfd/config.bfd
index 4799da8..2fdec8b 100644
--- a/bfd/config.bfd
+++ b/bfd/config.bfd
@@ -178,6 +178,11 @@ case "${targ}" in
     targ_selvecs="aarch64_elf64_le_vec aarch64_elf32_le_vec aarch64_elf32_be_vec arm_elf32_be_vec arm_elf32_le_vec"
     want64=true
     ;;
+  aarch64-*-freebsd*)
+    targ_defvec=aarch64_elf64_le_vec
+    targ_selvecs="aarch64_elf64_be_vec arm_elf32_le_vec arm_elf32_be_vec"
+    want64=true
+    ;;
   aarch64-*-linux*)
     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"
diff --git a/ld/ChangeLog b/ld/ChangeLog
index ac1abae..d528b21 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,11 @@
+2015-xx-xx  Andrew Turner <andrew@freebsd.org>
+
+	* Makefile.am: Add FreeBSD aarch64 files.
+	* Makefile.in: Regenerate.
+	* configure.tgt: Add aarch64-*-freebsd* target triple.
+	* emulparams/aarch64fbsd.sh: New file.
+	* emulparams/aarch64fbsdb.sh: New file.
+
 2015-04-01  Tejas Belagod  <tejas.belagod@arm.com>
 
 	* emultempl/aarch64elf.em
diff --git a/ld/Makefile.am b/ld/Makefile.am
index 14cfedd..80c7487 100644
--- a/ld/Makefile.am
+++ b/ld/Makefile.am
@@ -426,6 +426,8 @@ ALL_64_EMULATION_SOURCES = \
 	eaarch64elf32.c \
 	eaarch64elfb.c \
 	eaarch64elf32b.c \
+	eaarch64fbsd.c \
+	eaarch64fbsdb.c \
 	eaarch64linux.c \
 	eaarch64linuxb.c \
 	eaarch64linux32.c \
@@ -1584,6 +1586,14 @@ eaarch64elf32b.c: $(srcdir)/emulparams/aarch64elf32b.sh $(srcdir)/emulparams/aar
   $(ELF_DEPS) $(srcdir)/emultempl/aarch64elf.em \
   $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
 
+eaarch64fbsd.c: $(srcdir)/emulparams/aarch64fbsd.sh \
+  $(ELF_DEPS) $(srcdir)/emultempl/aarch64elf.em \
+  $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+
+eaarch64fbsdb.c: $(srcdir)/emulparams/aarch64fbsdb.sh $(srcdir)/emulparams/aarch64fbsd.sh \
+  $(ELF_DEPS) $(srcdir)/emultempl/aarch64elf.em \
+  $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+
 eaarch64linux.c: $(srcdir)/emulparams/aarch64linux.sh \
   $(ELF_DEPS) $(srcdir)/emultempl/aarch64elf.em \
   $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
diff --git a/ld/Makefile.in b/ld/Makefile.in
index eba36a0..81159cb 100644
--- a/ld/Makefile.in
+++ b/ld/Makefile.in
@@ -751,6 +751,8 @@ ALL_64_EMULATION_SOURCES = \
 	eaarch64elf32.c \
 	eaarch64elfb.c \
 	eaarch64elf32b.c \
+	eaarch64fbsd.c \
+	eaarch64fbsdb.c \
 	eaarch64linux.c \
 	eaarch64linuxb.c \
 	eaarch64linux32.c \
@@ -1081,6 +1083,8 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64elf32.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64elf32b.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64elfb.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64fbsd.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64fbsdb.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64linux.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64linux32.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64linux32b.Po@am__quote@
@@ -3076,6 +3080,14 @@ eaarch64elf32b.c: $(srcdir)/emulparams/aarch64elf32b.sh $(srcdir)/emulparams/aar
   $(ELF_DEPS) $(srcdir)/emultempl/aarch64elf.em \
   $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
 
+eaarch64fbsd.c: $(srcdir)/emulparams/aarch64fbsd.sh \
+  $(ELF_DEPS) $(srcdir)/emultempl/aarch64elf.em \
+  $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+
+eaarch64fbsdb.c: $(srcdir)/emulparams/aarch64fbsdb.sh $(srcdir)/emulparams/aarch64fbsd.sh \
+  $(ELF_DEPS) $(srcdir)/emultempl/aarch64elf.em \
+  $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+
 eaarch64linux.c: $(srcdir)/emulparams/aarch64linux.sh \
   $(ELF_DEPS) $(srcdir)/emultempl/aarch64elf.em \
   $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
diff --git a/ld/configure.tgt b/ld/configure.tgt
index 4b967fe..4a45f14 100644
--- a/ld/configure.tgt
+++ b/ld/configure.tgt
@@ -49,6 +49,8 @@ aarch64_be-*-elf)	targ_emul=aarch64elfb
 			targ_extra_emuls="aarch64elf aarch64elf32 aarch64elf32b armelfb armelf" ;;
 aarch64-*-elf)		targ_emul=aarch64elf
 			targ_extra_emuls="aarch64elf32 aarch64elf32b aarch64elfb armelf armelfb" ;;
+aarch64-*-freebsd*)	targ_emul=aarch64fbsd
+			targ_extra_emuls="aarch64fbsdb aarch64elf" ;;
 aarch64_be-*-linux*)	targ_emul=aarch64linuxb
 			targ_extra_libpath="aarch64linux aarch64linux32 aarch64linux32b armelfb_linux_eabi armelf_linux_eabi"
 			targ_extra_emuls="aarch64elfb aarch64elf aarch64elf32 aarch64elf32b armelfb armelf $targ_extra_libpath" ;;
diff --git a/ld/emulparams/aarch64fbsd.sh b/ld/emulparams/aarch64fbsd.sh
new file mode 100644
index 0000000..b92bde9
--- /dev/null
+++ b/ld/emulparams/aarch64fbsd.sh
@@ -0,0 +1,37 @@
+ARCH=aarch64
+MACHINE=
+NOP=0
+
+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=elf32
+EXTRA_EM_FILE=aarch64elf
+
+GENERATE_SHLIB_SCRIPT=yes
+GENERATE_PIE_SCRIPT=yes
+
+MAXPAGESIZE="CONSTANT (MAXPAGESIZE)"
+COMMONPAGESIZE="CONSTANT (COMMONPAGESIZE)"
+SEPARATE_GOTPLT=24
+IREL_IN_PLT=
+
+TEXT_START_ADDR=0x400000
+
+DATA_START_SYMBOLS='PROVIDE (__data_start = .);';
+
+# AArch64 does not support .s* sections.
+NO_SMALL_DATA=yes
+
+OTHER_BSS_SYMBOLS='__bss_start__ = .;'
+OTHER_BSS_END_SYMBOLS='_bss_end__ = . ; __bss_end__ = . ;'
+OTHER_END_SYMBOLS='__end__ = . ;'
+
+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          ${RELOCATING-0} : ALIGN(16) { *(.plt)${IREL_IN_PLT+ *(.iplt)} }"
diff --git a/ld/emulparams/aarch64fbsdb.sh b/ld/emulparams/aarch64fbsdb.sh
new file mode 100644
index 0000000..2c55dde
--- /dev/null
+++ b/ld/emulparams/aarch64fbsdb.sh
@@ -0,0 +1,2 @@
+. ${srcdir}/emulparams/aarch64fbsd.sh
+OUTPUT_FORMAT="elf64-bigaarch64"
-- 
2.2.2
Follow-Ups:
- Re: [PATCH] Add FreeBSD aarch64 support
  - From: Nicholas Clifton
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