diff --git a/bfd/config.bfd b/bfd/config.bfd
index 1b0111fd..16dc49bf 100644
--- a/bfd/config.bfd
+++ b/bfd/config.bfd
@@ -238,6 +238,11 @@ esac
 case "${targ}" in
 # START OF targmatch.h
 #ifdef BFD64
+  x86_64-*-acadia*)
+    targ_defvec=x86_64_elf64_vec
+    targ_selvecs=i386_elf32_vec
+    want64=true
+    ;;
   aarch64-*-darwin*)
     targ_defvec=aarch64_mach_o_vec
     targ_selvecs="arm_mach_o_vec mach_o_le_vec mach_o_be_vec mach_o_fat_vec"
diff --git a/config.sub b/config.sub
index dba16e84..d4b2e9d2 100755
--- a/config.sub
+++ b/config.sub
@@ -1723,7 +1723,7 @@ case $os in
 	# Now accept the basic system types.
 	# The portable systems comes first.
 	# Each alternative MUST end in a * to match a version number.
-	gnu* | android* | bsd* | mach* | minix* | genix* | ultrix* | irix* \
+	gnu* | acadia* | android* | bsd* | mach* | minix* | genix* | ultrix* | irix* \
 	     | *vms* | esix* | aix* | cnk* | sunos | sunos[34]* \
 	     | hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \
 	     | sym* |  plan9* | psp* | sim* | xray* | os68k* | v88r* \
diff --git a/gas/configure.tgt b/gas/configure.tgt
index 765ba736..b8d99f65 100644
--- a/gas/configure.tgt
+++ b/gas/configure.tgt
@@ -263,6 +263,7 @@ case ${generic_target} in
   i386-*-nto-qnx*)			fmt=elf ;;
   i386-*-*nt*)				fmt=coff em=pe ;;
   i386-*-rdos*)				fmt=elf ;;
+  i386-*-acadia*)     fmt=elf ;;
   i386-*-darwin*)			fmt=macho ;;
 
   ia16-*-elf*)				fmt=elf ;;
diff --git a/ld/Makefile.am b/ld/Makefile.am
index 12b2c3c4..66ff535a 100644
--- a/ld/Makefile.am
+++ b/ld/Makefile.am
@@ -454,6 +454,7 @@ ALL_64_EMULATION_SOURCES = \
 	eelf64tilegx_be.c \
 	eelf_mipsel_haiku.c \
 	eelf_x86_64.c \
+	eelf_x86_64_acadia.c \
 	eelf_x86_64_cloudabi.c \
 	eelf_x86_64_fbsd.c \
 	eelf_x86_64_haiku.c \
@@ -946,6 +947,7 @@ $(ALL_EMULATION_SOURCES) $(ALL_64_EMULATION_SOURCES): $(GEN_DEPENDS)
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64tilegx_be.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_mipsel_haiku.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64.Pc@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_acadia.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_cloudabi.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_fbsd.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_haiku.Pc@am__quote@
diff --git a/ld/Makefile.in b/ld/Makefile.in
index 3d5685d6..20cd5d88 100644
--- a/ld/Makefile.in
+++ b/ld/Makefile.in
@@ -954,6 +954,7 @@ ALL_64_EMULATION_SOURCES = \
 	eelf64tilegx_be.c \
 	eelf_mipsel_haiku.c \
 	eelf_x86_64.c \
+	eelf_x86_64_acadia.c \
 	eelf_x86_64_cloudabi.c \
 	eelf_x86_64_fbsd.c \
 	eelf_x86_64_haiku.c \
@@ -1462,6 +1463,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_mipsel_haiku.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_s390.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_acadia.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_cloudabi.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_fbsd.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_haiku.Po@am__quote@
@@ -2619,7 +2621,7 @@ $(ALL_EMULATION_SOURCES) $(ALL_64_EMULATION_SOURCES): $(GEN_DEPENDS)
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64tilegx.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64tilegx_be.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_mipsel_haiku.Pc@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64.Pc@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_acadia.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_cloudabi.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_fbsd.Pc@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_haiku.Pc@am__quote@
diff --git a/ld/configure.tgt b/ld/configure.tgt
index de04a44b..b1f3f26b 100644
--- a/ld/configure.tgt
+++ b/ld/configure.tgt
@@ -991,6 +991,9 @@ vax-*-linux-*)		targ_emul=elf32vax
 			;;
 visium-*-elf)		targ_emul=elf32visium
 			;;
+x86_64-*-acadia*) targ_emul=elf_x86_64_acadia
+     target_extra_emuls="elf_x86_64"
+     ;;
 x86_64-*-rdos*)		targ_emul=elf64rdos
 			;;
 x86_64-*-cloudabi*)	targ_emul=elf_x86_64_cloudabi
diff --git a/ld/emulparams/elf_x86_64_acadia.sh b/ld/emulparams/elf_x86_64_acadia.sh
new file mode 100644
index 00000000..59e7df71
--- /dev/null
+++ b/ld/emulparams/elf_x86_64_acadia.sh
@@ -0,0 +1 @@
+source_sh ${srcdir}/emulparams/elf_x86_64.sh