[committed 1/6] Gold: Add targ_extra_little_endian to configure.ac

[committed 1/6] Gold: Add targ_extra_little_endian to configure.ac

[YunQiang Su]

This option will be used by architectures which is big endian
by default, while little-endian support is also needed.

Mips(eb) ports are the examples.
---
 gold/configure     | 8 ++++++++
 gold/configure.ac  | 8 ++++++++
 gold/configure.tgt | 2 +-
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/gold/configure b/gold/configure
index 5c6fe2a5607..ccb1f2269b2 100755
--- a/gold/configure
+++ b/gold/configure
@@ -5266,6 +5266,10 @@ for targ in $target $canon_targets; do
 	      -o "$targ_extra_big_endian" = "true"; then
 	      targ_32_big=yes
 	  fi
+	  if test "$targ_little_endian" = "true" \
+	      -o "$targ_extra_little_endian" = "true"; then
+	      targ_32_little=yes
+	  fi
 	  if test "$targ_big_endian" = "false" \
 	      -o "$targ_extra_big_endian" = "false"; then
 	      targ_32_little=yes
@@ -5276,6 +5280,10 @@ for targ in $target $canon_targets; do
 	      -o "$targ_extra_big_endian" = "true"; then
 	      targ_64_big=yes
 	  fi
+	  if test "$targ_little_endian" = "true" \
+	      -o "$targ_extra_little_endian" = "true"; then
+	      targ_64_little=yes
+	  fi
 	  if test "$targ_big_endian" = "false" \
 	      -o "$targ_extra_big_endian" = "false"; then
 	      targ_64_little=yes
diff --git a/gold/configure.ac b/gold/configure.ac
index cafd3503b3b..e04e4086140 100644
--- a/gold/configure.ac
+++ b/gold/configure.ac
@@ -193,6 +193,10 @@ for targ in $target $canon_targets; do
 	      -o "$targ_extra_big_endian" = "true"; then
 	      targ_32_big=yes
 	  fi
+	  if test "$targ_little_endian" = "true" \
+	      -o "$targ_extra_little_endian" = "true"; then
+	      targ_32_little=yes
+	  fi
 	  if test "$targ_big_endian" = "false" \
 	      -o "$targ_extra_big_endian" = "false"; then
 	      targ_32_little=yes
@@ -203,6 +207,10 @@ for targ in $target $canon_targets; do
 	      -o "$targ_extra_big_endian" = "true"; then
 	      targ_64_big=yes
 	  fi
+	  if test "$targ_little_endian" = "true" \
+	      -o "$targ_extra_little_endian" = "true"; then
+	      targ_64_little=yes
+	  fi
 	  if test "$targ_big_endian" = "false" \
 	      -o "$targ_extra_big_endian" = "false"; then
 	      targ_64_little=yes
diff --git a/gold/configure.tgt b/gold/configure.tgt
index 4b54e08d27f..b472b8f0bad 100644
--- a/gold/configure.tgt
+++ b/gold/configure.tgt
@@ -165,7 +165,7 @@ mips*-*-*)
  targ_machine=EM_MIPS
  targ_size=32
  targ_big_endian=true
- targ_extra_big_endian=false
+ targ_extra_little_endian=true
  ;;
 s390-*-*)
  targ_obj=s390
-- 
2.39.2

[committed 2/6] Gold/MIPS: Use EM_MIPS instead of EM_MIPS_RS3_LE for little endian

[YunQiang Su]

EM_MIPS_RS3_LE has been deprecated quite long ago, and in fact
most of current LE ELF files are using EM_MIPS.

This problem didn't make some trouble for us, is due to that
gold is a linker, and all of the inputs to it has right EM values.
---
 gold/configure.tgt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gold/configure.tgt b/gold/configure.tgt
index b472b8f0bad..996bc901d1d 100644
--- a/gold/configure.tgt
+++ b/gold/configure.tgt
@@ -155,7 +155,7 @@ aarch64*-*)
  ;;
 mips*el*-*-*|mips*le*-*-*)
  targ_obj=mips
- targ_machine=EM_MIPS_RS3_LE
+ targ_machine=EM_MIPS
  targ_size=32
  targ_big_endian=false
  targ_extra_big_endian=true
-- 
2.39.2

Re: [committed 2/6] Gold/MIPS: Use EM_MIPS instead of EM_MIPS_RS3_LE for little endian

[YunQiang Su]

@Maciej W. Rozycki Since this patch is so simple, so is it ok to recommit it?

Re: [committed 2/6] Gold/MIPS: Use EM_MIPS instead of EM_MIPS_RS3_LE for little endian

[Maciej W. Rozycki]

On Sat, 7 Oct 2023, YunQiang Su wrote:

> @Maciej W. Rozycki Since this patch is so simple, so is it ok to recommit it?

 As I requested off-list please resubmit any changes from this series you 
want to have reviewed.

  Maciej

[committed 3/6] Gold/MIPS: Drop mips*le/mips*el* triple pattern

[YunQiang Su]

Only mips*el triples are supported by binutils.  The mips*le
or mips*el* may cause some problem with other components of
binutils, since they will consider them as big endian.
---
 gold/configure.tgt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gold/configure.tgt b/gold/configure.tgt
index 996bc901d1d..8f0f21bdc03 100644
--- a/gold/configure.tgt
+++ b/gold/configure.tgt
@@ -153,7 +153,7 @@ aarch64*-*)
  targ_big_endian=false
  targ_extra_big_endian=true
  ;;
-mips*el*-*-*|mips*le*-*-*)
+mips*el-*-*)
  targ_obj=mips
  targ_machine=EM_MIPS
  targ_size=32
-- 
2.39.2

[committed 4/6] Gold/MIPS: Add targ_extra_size=64 for mips32 triples

[YunQiang Su]

So we can enable 64bit ELF support for MIPS32 toolchain.
---
 gold/configure.tgt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gold/configure.tgt b/gold/configure.tgt
index 8f0f21bdc03..4b16634ff4e 100644
--- a/gold/configure.tgt
+++ b/gold/configure.tgt
@@ -157,6 +157,7 @@ mips*el-*-*)
  targ_obj=mips
  targ_machine=EM_MIPS
  targ_size=32
+ targ_extra_size=64
  targ_big_endian=false
  targ_extra_big_endian=true
  ;;
@@ -164,6 +165,7 @@ mips*-*-*)
  targ_obj=mips
  targ_machine=EM_MIPS
  targ_size=32
+ targ_extra_size=64
  targ_big_endian=true
  targ_extra_little_endian=true
  ;;
-- 
2.39.2

[committed 5/6] Gold/MIPS: Add mips64*/mips64*el triple support

[YunQiang Su]

Use targ_size=64 and targ_extra_size=32
---
 gold/configure.tgt | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/gold/configure.tgt b/gold/configure.tgt
index 4b16634ff4e..e2e131bbd84 100644
--- a/gold/configure.tgt
+++ b/gold/configure.tgt
@@ -153,6 +153,14 @@ aarch64*-*)
  targ_big_endian=false
  targ_extra_big_endian=true
  ;;
+mips64*el-*-*)
+ targ_obj=mips
+ targ_machine=EM_MIPS
+ targ_size=64
+ targ_extra_size=32
+ targ_big_endian=false
+ targ_extra_big_endian=true
+ ;;
 mips*el-*-*)
  targ_obj=mips
  targ_machine=EM_MIPS
@@ -161,6 +169,14 @@ mips*el-*-*)
  targ_big_endian=false
  targ_extra_big_endian=true
  ;;
+mips64*-*-*)
+ targ_obj=mips
+ targ_machine=EM_MIPS
+ targ_size=64
+ targ_extra_size=32
+ targ_big_endian=true
+ targ_extra_little_endian=true
+ ;;
 mips*-*-*)
  targ_obj=mips
  targ_machine=EM_MIPS
-- 
2.39.2

[committed 6/6] MIPS: Use 64-bit a ABI by default for `mipsisa64*-*-linux*' targets

[YunQiang Su]

Following the arrangement in GCC select a 64-bit ABI by default, either
n32 or n64, rather than o32 for `mipsisa64*-*-linux*' targets, just as
with the corresponding `mips64*-*-linux*' targets.
---
 bfd/config.bfd     |  8 ++++----
 gas/configure      |  6 +++---
 gas/configure.ac   |  6 +++---
 gold/configure.tgt |  4 ++--
 ld/configure.tgt   | 10 ++++++----
 5 files changed, 18 insertions(+), 16 deletions(-)

diff --git a/bfd/config.bfd b/bfd/config.bfd
index 08129e6a8cb..55fd02e787c 100644
--- a/bfd/config.bfd
+++ b/bfd/config.bfd
@@ -956,21 +956,21 @@ 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 3c80fe5741a..1827e38690e 100755
--- a/gas/configure
+++ b/gas/configure
@@ -12256,11 +12256,11 @@ _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*-kfreebsd*-gnu | mips64*-ps2-elf*)
+	  mips64*-linux* | mipsisa64*-linux* | mips-sgi-irix6* \
+	  | mips64*-freebsd* | mips64*-kfreebsd*-gnu | mips64*-ps2-elf*)
 	    mips_default_abi=N32_ABI
 	    ;;
 	  mips*-linux* | mips*-freebsd* | mips*-kfreebsd*-gnu)
diff --git a/gas/configure.ac b/gas/configure.ac
index 3a04c39d344..ecfab6bf510 100644
--- a/gas/configure.ac
+++ b/gas/configure.ac
@@ -394,11 +394,11 @@ changequote([,])dnl
 	esac
 	# Decide which ABI to target by default.
 	case ${target} in
-	  mips64*-openbsd* | mips64*-linux-gnuabi64)
+	  mips64*-openbsd* | mips64*-linux-gnuabi64 | mipsisa64*-linux-gnuabi64)
 	    mips_default_abi=N64_ABI
 	    ;;
-	  mips64*-linux* | mips-sgi-irix6* | mips64*-freebsd* \
-	  | mips64*-kfreebsd*-gnu | mips64*-ps2-elf*)
+	  mips64*-linux* | mipsisa64*-linux* | mips-sgi-irix6* \
+	  | mips64*-freebsd* | mips64*-kfreebsd*-gnu | mips64*-ps2-elf*)
 	    mips_default_abi=N32_ABI
 	    ;;
 	  mips*-linux* | mips*-freebsd* | mips*-kfreebsd*-gnu)
diff --git a/gold/configure.tgt b/gold/configure.tgt
index e2e131bbd84..99a5fcc91ee 100644
--- a/gold/configure.tgt
+++ b/gold/configure.tgt
@@ -153,7 +153,7 @@ aarch64*-*)
  targ_big_endian=false
  targ_extra_big_endian=true
  ;;
-mips64*el-*-*)
+mips64*el-*-* | mipsisa64*el-linux*)
  targ_obj=mips
  targ_machine=EM_MIPS
  targ_size=64
@@ -169,7 +169,7 @@ mips*el-*-*)
  targ_big_endian=false
  targ_extra_big_endian=true
  ;;
-mips64*-*-*)
+mips64*-*-* | mipsisa64*-linux*)
  targ_obj=mips
  targ_machine=EM_MIPS
  targ_size=64
diff --git a/ld/configure.tgt b/ld/configure.tgt
index ff0aaaae257..34d20e05bc9 100644
--- a/ld/configure.tgt
+++ b/ld/configure.tgt
@@ -586,21 +586,23 @@ mips*-*-vxworks*)	targ_emul=elf32ebmipvxworks
 			;;
 mips*-*-windiss)	targ_emul=elf32mipswindiss
 			;;
-mips64*el-*-linux-gnuabi64)
+mips64*el-*-linux-gnuabi64 | mipsisa64*el-*-linux-gnuabi64)
 			targ_emul=elf64ltsmip
 			targ_extra_emuls="elf64btsmip elf32ltsmipn32 elf32btsmipn32 elf32ltsmip elf32btsmip"
 			targ_extra_libpath=$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
 			;;
-- 
2.39.2