[PATCH] MIPS: recoginze mipsisa64 as 64bit CPU

[YunQiang Su]

In GCC, mipsisa64* in triples are recoginzed as 64bit CPU.
Let's do the same.

The default ABI is determined by the abi section of triples,
which is same with the `mips64*' CPU:
   -gnuabi64 and -openbsd for N64
   otherwise, N32.
---
 bfd/config.bfd     |  8 ++++----
 gas/configure      |  4 ++--
 gas/configure.ac   |  4 ++--
 gold/configure.tgt | 16 +++++++++++++++-
 ld/configure.tgt   | 10 ++++++----
 5 files changed, 29 insertions(+), 13 deletions(-)

diff --git a/bfd/config.bfd b/bfd/config.bfd
index 3b39ff36c00..972e847788b 100644
--- a/bfd/config.bfd
+++ b/bfd/config.bfd
@@ -941,21 +941,21 @@ case "${targ}" in
     targ_defvec=mips_elf32_be_vec
     targ_selvecs="mips_elf32_le_vec mips_elf64_be_vec mips_elf64_le_vec mips_ecoff_be_vec mips_ecoff_le_vec"
     ;;
-  mips64*el-*-linux*-gnuabi64)
+  mips64*el-*-linux*-gnuabi64 | mipsisa64*el-*-linux*-gnuabi64)
     targ_defvec=mips_elf64_trad_le_vec
     targ_selvecs="mips_elf64_trad_be_vec mips_elf32_ntrad_le_vec mips_elf32_ntrad_be_vec mips_elf32_trad_le_vec mips_elf32_trad_be_vec"
     want64=true
     ;;
-  mips64*el-*-linux*)
+  mips64*el-*-linux* | mipsisa64*el-*-linux*)
     targ_defvec=mips_elf32_ntrad_le_vec
     targ_selvecs="mips_elf32_ntrad_be_vec mips_elf32_trad_le_vec mips_elf32_trad_be_vec mips_elf64_trad_le_vec mips_elf64_trad_be_vec"
     ;;
-  mips64*-*-linux*-gnuabi64)
+  mips64*-*-linux*-gnuabi64 | mipsisa64*-*-linux*-gnuabi64)
     targ_defvec=mips_elf64_trad_be_vec
     targ_selvecs="mips_elf64_trad_le_vec mips_elf32_ntrad_be_vec mips_elf32_ntrad_le_vec mips_elf32_trad_be_vec mips_elf32_trad_le_vec"
     want64=true
     ;;
-  mips64*-*-linux*)
+  mips64*-*-linux* | mipsisa64*-*-linux*)
     targ_defvec=mips_elf32_ntrad_be_vec
     targ_selvecs="mips_elf32_ntrad_le_vec mips_elf32_trad_be_vec mips_elf32_trad_le_vec mips_elf64_trad_be_vec mips_elf64_trad_le_vec"
     ;;
diff --git a/gas/configure b/gas/configure
index 1b9bf0f83d5..dc6e1ee5f34 100755
--- a/gas/configure
+++ b/gas/configure
@@ -12256,10 +12256,10 @@ _ACEOF
 	esac
 	# Decide which ABI to target by default.
 	case ${target} in
-	  mips64*-openbsd* | mips64*-linux-gnuabi64)
+	  mips64*-openbsd* | mips64*-linux-gnuabi64 | mipsisa64*-linux-gnuabi64)
 	    mips_default_abi=N64_ABI
 	    ;;
-	  mips64*-linux* | mips-sgi-irix6* | mips64*-freebsd* \
+	  mips64*-linux* | mipsisa64*-linux* | mips-sgi-irix6* | mips64*-freebsd* \
 	  | mips64*-kfreebsd*-gnu | mips64*-ps2-elf*)
 	    mips_default_abi=N32_ABI
 	    ;;
diff --git a/gas/configure.ac b/gas/configure.ac
index c3bd1178d41..617a5ca1473 100644
--- a/gas/configure.ac
+++ b/gas/configure.ac
@@ -394,10 +394,10 @@ changequote([,])dnl
 	esac
 	# Decide which ABI to target by default.
 	case ${target} in
-	  mips64*-openbsd* | mips64*-linux-gnuabi64)
+	  mips64*-openbsd* | mips64*-linux-gnuabi64 | mipsisa64*-linux-gnuabi64)
 	    mips_default_abi=N64_ABI
 	    ;;
-	  mips64*-linux* | mips-sgi-irix6* | mips64*-freebsd* \
+	  mips64*-linux* | mipsisa64*-linux* | mips-sgi-irix6* | mips64*-freebsd* \
 	  | mips64*-kfreebsd*-gnu | mips64*-ps2-elf*)
 	    mips_default_abi=N32_ABI
 	    ;;
diff --git a/gold/configure.tgt b/gold/configure.tgt
index 4b54e08d27f..d09bb76ef02 100644
--- a/gold/configure.tgt
+++ b/gold/configure.tgt
@@ -153,13 +153,27 @@ aarch64*-*)
  targ_big_endian=false
  targ_extra_big_endian=true
  ;;
-mips*el*-*-*|mips*le*-*-*)
+mips64*el*-*-* | mipsisa64*le*-*-*)
+ targ_obj=mips
+ targ_machine=EM_MIPS_RS3_LE
+ targ_size=64
+ targ_big_endian=false
+ targ_extra_big_endian=true
+ ;;
+mips*el*-*-*)
  targ_obj=mips
  targ_machine=EM_MIPS_RS3_LE
  targ_size=32
  targ_big_endian=false
  targ_extra_big_endian=true
  ;;
+mips64*-*-* | mipsisa64*-*-*)
+ targ_obj=mips
+ targ_machine=EM_MIPS
+ targ_size=64
+ targ_big_endian=true
+ targ_extra_big_endian=false
+ ;;
 mips*-*-*)
  targ_obj=mips
  targ_machine=EM_MIPS
diff --git a/ld/configure.tgt b/ld/configure.tgt
index c62b9581d9b..e1ac1b33d4c 100644
--- a/ld/configure.tgt
+++ b/ld/configure.tgt
@@ -580,21 +580,23 @@ mips*-*-vxworks*)	targ_emul=elf32ebmipvxworks
 			;;
 mips*-*-windiss)	targ_emul=elf32mipswindiss
 			;;
-mips64*el-*-linux-gnuabi64)
+mips64*el-*-linux-gnuabi64 | mipsisa64*el-*-linux-gnuabi64)
 			targ_emul=elf64ltsmip
 			targ_extra_emuls="elf64btsmip elf32ltsmipn32 elf32btsmipn32 elf32ltsmip elf32btsmip"
 			targ_extra_libpath=$targ_extra_emuls
 			;;
-mips64*el-*-linux-*)	targ_emul=elf32ltsmipn32
+mips64*el-*-linux-* | mipsisa64*el-*-linux-*)
+			targ_emul=elf32ltsmipn32
 			targ_extra_emuls="elf32btsmipn32 elf32ltsmip elf32btsmip elf64ltsmip elf64btsmip"
 			targ_extra_libpath=$targ_extra_emuls
 			;;
-mips64*-*-linux-gnuabi64)
+mips64*-*-linux-gnuabi64 | mipsisa64*-*-linux-gnuabi64)
 			targ_emul=elf64btsmip
 			targ_extra_emuls="elf64ltsmip elf32btsmipn32 elf32ltsmipn32 elf32btsmip elf32ltsmip"
 			targ_extra_libpath=$targ_extra_emuls
 			;;
-mips64*-*-linux-*)	targ_emul=elf32btsmipn32
+mips64*-*-linux-* | mipsisa64*-*-linux-*)
+			targ_emul=elf32btsmipn32
 			targ_extra_emuls="elf32ltsmipn32 elf32btsmip elf32ltsmip elf64btsmip elf64ltsmip"
 			targ_extra_libpath=$targ_extra_emuls
 			;;
-- 
2.30.2