From 64050ef082f7f3af78cc136c17c995d62cec14b5 Mon Sep 17 00:00:00 2001
From: swcompiler <lc@wxiat.com>
Date: Mon, 25 Nov 2024 16:25:58 +0800
Subject: [PATCH 01/16] Sw64 Port: add configure support for sw64

---
 Makefile.in              |   1 +
 Makefile.tpl             |   1 +
 config.guess             |  12 ++++
 config.sub               |   1 +
 config/intdiv0.m4        |   2 +-
 config/mt-sw_64ieee      |   3 +
 config/tcl.m4            |   6 ++
 configure                |  16 ++++-
 configure.ac             |  19 +++++-
 contrib/config-list.mk   |   1 +
 gcc/config.gcc           |  35 +++++++++++
 gcc/config.host          |   8 +++
 gcc/config.in            |  17 +++++
 gcc/config/host-linux.cc |   2 +
 gcc/configure            | 131 ++++++++++++++++++++++++++++++++++++++-
 gcc/configure.ac         |  84 ++++++++++++++++++++++++-
 gcc/doc/install.texi     |   9 +++
 17 files changed, 342 insertions(+), 6 deletions(-)
 create mode 100644 config/mt-sw_64ieee

diff --git a/Makefile.in b/Makefile.in
index 7785b3d9a..283c16c4e 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -707,6 +707,7 @@ all:
 @target_makefile_frag@
 @alphaieee_frag@
 @ospace_frag@
+@sw_64ieee_frag@
 @host_makefile_frag@
 ###
 
diff --git a/Makefile.tpl b/Makefile.tpl
index ef58fac2b..d629bca8b 100644
--- a/Makefile.tpl
+++ b/Makefile.tpl
@@ -630,6 +630,7 @@ all:
 @target_makefile_frag@
 @alphaieee_frag@
 @ospace_frag@
+@sw_64ieee_frag@
 @host_makefile_frag@
 ###
 
diff --git a/config.guess b/config.guess
index 1972fda8e..0275a0ef8 100755
--- a/config.guess
+++ b/config.guess
@@ -1101,6 +1101,18 @@ EOF
     sparc:Linux:*:* | sparc64:Linux:*:*)
 	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
 	exit ;;
+    sw_64:Linux:*:*)
+        case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
+          SW6)   UNAME_MACHINE=sw_64sw6 ;;
+          SW6A)   UNAME_MACHINE=sw_64sw6a ;;
+          SW6B)  UNAME_MACHINE=sw_64sw6b ;;
+          SW8A)  UNAME_MACHINE=sw_64sw8a ;;
+          SW)  UNAME_MACHINE=sw_64 ;;
+        esac
+        objdump --private-headers /bin/sh | grep -q ld.so.1
+        if test "$?" = 0 ; then LIBC=gnulibc1 ; fi
+        echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+        exit ;;
     tile*:Linux:*:*)
 	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
 	exit ;;
diff --git a/config.sub b/config.sub
index 38f3d037a..70ff2e6e4 100755
--- a/config.sub
+++ b/config.sub
@@ -1262,6 +1262,7 @@ case $cpu-$vendor in
 			| sparclite \
 			| sparcv8 | sparcv9 | sparcv9b | sparcv9v | sv1 | sx* \
 			| spu \
+                        | sw_64 | sw_64sw6a | sw_64sw6b | sw_64sw8a \
 			| tahoe \
 			| thumbv7* \
 			| tic30 | tic4x | tic54x | tic55x | tic6x | tic80 \
diff --git a/config/intdiv0.m4 b/config/intdiv0.m4
index 55dddcf1c..bfe1bdcdf 100644
--- a/config/intdiv0.m4
+++ b/config/intdiv0.m4
@@ -56,7 +56,7 @@ int main ()
         [
           # Guess based on the CPU.
           case "$host_cpu" in
-            alpha* | i[34567]86 | m68k | s390*)
+            alpha* | i[34567]86 | m68k | s390* | sw_64*)
               gt_cv_int_divbyzero_sigfpe="guessing yes";;
             *)
               gt_cv_int_divbyzero_sigfpe="guessing no";;
diff --git a/config/mt-sw_64ieee b/config/mt-sw_64ieee
new file mode 100644
index 000000000..80c17cdc6
--- /dev/null
+++ b/config/mt-sw_64ieee
@@ -0,0 +1,3 @@
+CFLAGS_FOR_TARGET += -mieee
+CXXFLAGS_FOR_TARGET += -mieee
+GOCFLAGS_FOR_TARGET += -mieee
diff --git a/config/tcl.m4 b/config/tcl.m4
index 4542a4b23..c58bf5343 100644
--- a/config/tcl.m4
+++ b/config/tcl.m4
@@ -1368,6 +1368,9 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    if test "`uname -m`" = "alpha" ; then
 		CFLAGS="$CFLAGS -mieee"
 	    fi
+	    if test "`uname -m`" = "sw_64" ; then
+		CFLAGS="$CFLAGS -mieee"
+	    fi
 	    if test $do64bit = yes; then
 		AC_CACHE_CHECK([if compiler accepts -m64 flag], tcl_cv_cc_m64, [
 		    hold_cflags=$CFLAGS
@@ -1418,6 +1421,9 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    if test "`uname -m`" = "alpha" ; then
 		CFLAGS="$CFLAGS -mieee"
 	    fi
+	    if test "`uname -m`" = "sw_64" ; then
+		CFLAGS="$CFLAGS -mieee"
+	    fi
 	    ;;
 	Lynx*)
 	    SHLIB_CFLAGS="-fPIC"
diff --git a/configure b/configure
index aff62c464..1b7c11292 100755
--- a/configure
+++ b/configure
@@ -789,6 +789,7 @@ ac_subst_files='serialization_dependencies
 host_makefile_frag
 target_makefile_frag
 alphaieee_frag
+sw_64ieee_frag
 ospace_frag'
 ac_user_opts='
 enable_option_checking
@@ -4016,6 +4017,10 @@ case "${target}" in
            use_gnu_ld=no
     fi
     ;;
+  sw_64*-*-*)
+    # newlib is not 64 bit ready
+    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
+    ;;
   tic6x-*-*)
     noconfigdirs="$noconfigdirs sim"
     ;;
@@ -9584,6 +9589,15 @@ case $target in
     ;;
 esac
 
+sw_64ieee_frag=/dev/null
+case $target in
+  sw_64*-*-*)
+    # This just makes sure to use the -mieee option to build target libs.
+    # This should probably be set individually by each library.
+    sw_64ieee_frag="config/mt-sw_64ieee"
+    ;;
+esac
+
 # If --enable-target-optspace always use -Os instead of -O2 to build
 # the target libraries, similarly if it is not specified, use -Os
 # on selected platforms.
@@ -10299,7 +10313,7 @@ case "${target}" in
 esac
 
 # Makefile fragments.
-for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
+for frag in host_makefile_frag target_makefile_frag alphaieee_frag sw_64ieee_frag  ospace_frag;
 do
   eval fragval=\$$frag
   if test $fragval != /dev/null; then
diff --git a/configure.ac b/configure.ac
index f310d75ca..c4a65a49d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1271,6 +1271,10 @@ case "${target}" in
            use_gnu_ld=no
     fi
     ;;
+  sw_64*-*-*)
+    # newlib is not 64 bit ready
+    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
+    ;;
   tic6x-*-*)
     noconfigdirs="$noconfigdirs sim"
     ;;
@@ -1335,6 +1339,9 @@ case "${host}" in
   rs6000-*-aix*)
     host_makefile_frag="config/mh-ppc-aix"
     ;;
+  sw_64*-linux*)
+    host_makefile_frag="config/mh-sw_64-linux"
+    ;;
 esac
 fi
 
@@ -2765,6 +2772,15 @@ case $target in
     ;;
 esac
 
+sw_64ieee_frag=/dev/null
+case $target in
+  sw_64*-*-*)
+    # This just makes sure to use the -mieee option to build target libs.
+    # This should probably be set individually by each library.
+    sw_64ieee_frag="config/mt-sw_64ieee"
+    ;;
+esac
+
 # If --enable-target-optspace always use -Os instead of -O2 to build
 # the target libraries, similarly if it is not specified, use -Os
 # on selected platforms.
@@ -3475,7 +3491,7 @@ case "${target}" in
 esac
 
 # Makefile fragments.
-for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
+for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag sw_64ieee_frag;
 do
   eval fragval=\$$frag
   if test $fragval != /dev/null; then
@@ -3486,6 +3502,7 @@ AC_SUBST_FILE(host_makefile_frag)
 AC_SUBST_FILE(target_makefile_frag)
 AC_SUBST_FILE(alphaieee_frag)
 AC_SUBST_FILE(ospace_frag)
+AC_SUBST_FILE(sw_64ieee_frag)
 
 # Miscellanea: directories, flags, etc.
 AC_SUBST(RPATH_ENVVAR)
diff --git a/contrib/config-list.mk b/contrib/config-list.mk
index e04210556..730a49e64 100644
--- a/contrib/config-list.mk
+++ b/contrib/config-list.mk
@@ -96,6 +96,7 @@ LIST = aarch64-elf aarch64-linux-gnu aarch64-rtems \
   sparc64-sun-solaris2.11OPT-with-gnu-ldOPT-with-gnu-asOPT-enable-threads=posix \
   sparc-wrs-vxworks sparc64-elf sparc64-rtems sparc64-linux sparc64-freebsd6 \
   sparc64-netbsd sparc64-openbsd \
+  sw_64-linux-gnu sw_64-netbsd sw_64-openbsd \
   tilegx-linux-gnuOPT-enable-obsolete tilegxbe-linux-gnuOPT-enable-obsolete \
   tilepro-linux-gnuOPT-enable-obsolete \
   v850e1-elf v850e-elf v850-elf v850-rtems vax-linux-gnu \
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 23c5bee2b..d55645381 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -547,6 +547,10 @@ sh[123456789lbe]*-*-* | sh-*-*)
 	extra_options="${extra_options} fused-madd.opt"
 	extra_objs="${extra_objs} sh_treg_combine.o sh-mem.o sh_optimize_sett_clrt.o"
 	;;
+sw_64*-*-*)
+	cpu_type=sw_64
+	extra_options="${extra_options} g.opt"
+	;;
 v850*-*-*)
 	cpu_type=v850
 	;;
@@ -3471,6 +3475,11 @@ sparc64-*-openbsd*)
 	with_cpu=ultrasparc
 	tmake_file="${tmake_file} sparc/t-sparc"
 	;;
+sw_64*-*-linux*)
+	tm_file="elfos.h ${tm_file} sw_64/gnu-user.h sw_64/elf.h sw_64/linux.h sw_64/linux-elf.h glibc-stdint.h"
+	tmake_file="${tmake_file} sw_64/t-linux sw_64/t-sw_64"
+	extra_options="${extra_options} sw_64/elf.opt"
+	;;
 tic6x-*-elf)
 	tm_file="elfos.h ${tm_file} c6x/elf-common.h c6x/elf.h"
 	tm_file="${tm_file} tm-dwarf2.h newlib-stdint.h"
@@ -3999,6 +4008,15 @@ if test x$with_cpu = x ; then
 	  ;;
       esac
       ;;
+    sw_64sw6a*-*-*)
+      with_cpu=sw6a
+      ;;
+    sw_64sw6b*-*-*)
+      with_cpu=sw6b
+      ;;
+    sw_64sw8a*-*-*)
+      with_cpu=sw8a
+      ;;
     visium-*-*)
       with_cpu=gr5
       ;;
@@ -5571,6 +5589,23 @@ case "${target}" in
 		esac
 		;;
 
+	sw_64*-*-*)
+		supported_defaults="cpu tune"
+		for which in cpu tune; do
+			eval "val=\$with_$which"
+			case "$val" in
+			"" \
+			| sw6 | sw6a | sw6b | sw8a \
+			| sw6c)
+				;;
+			*)
+				echo "Unknown CPU used in --with-$which=$val" 1>&2
+				exit 1
+				;;
+			esac
+		done
+		;;
+
 	tic6x-*-*)
 		supported_defaults="arch"
 
diff --git a/gcc/config.host b/gcc/config.host
index bf7dcb4cc..081ce29c2 100644
--- a/gcc/config.host
+++ b/gcc/config.host
@@ -198,6 +198,14 @@ case ${host} in
 	;;
     esac
     ;;
+  sw_64*-*-linux*)
+    case ${target} in
+      sw_64*-*-linux*)
+	host_extra_gcc_objs="driver-sw_64.o"
+	host_xmake_file="${host_xmake_file} sw_64/x-sw_64"
+	;;
+    esac
+    ;;
 esac
 
 # Machine-specific settings.
diff --git a/gcc/config.in b/gcc/config.in
index 91328572b..caf0d6492 100644
--- a/gcc/config.in
+++ b/gcc/config.in
@@ -205,6 +205,11 @@
 #undef ENABLE_LD_BUILDID
 #endif
 
+/* Define if gcc should always pass --no-relax to linker for sw_64. */
+#ifndef USED_FOR_TARGET
+#undef ENABLE_LD_NORELAX
+#endif
+
 
 /* Define to 1 to enable libquadmath support */
 #ifndef USED_FOR_TARGET
@@ -422,6 +427,10 @@
 #undef HAVE_AS_EXPLICIT_RELOCS
 #endif
 
+/* Define if your assembler supports explicit relocations. */
+#ifndef USED_FOR_TARGET
+#undef SW_64_ENABLE_ASAN
+#endif
 
 /* Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions. */
 #ifndef USED_FOR_TARGET
@@ -2726,3 +2735,11 @@
 #undef vfork
 #endif
 
+/* Define only sw64 target */
+#undef FLAG_SW64_ATOMIC
+#undef FLAG_SW64_90139
+#undef FLAG_SW64_PREFETCH
+#undef FLAG_SW64_PROTECT
+#undef FLAG_SW64_INC_DEC
+#undef FLAG_SW64_DELNOP
+#undef FLAG_SW64_FM
diff --git a/gcc/config/host-linux.cc b/gcc/config/host-linux.cc
index 817d3c087..a65468272 100644
--- a/gcc/config/host-linux.cc
+++ b/gcc/config/host-linux.cc
@@ -100,6 +100,8 @@
 # define TRY_EMPTY_VM_SPACE	0x1000000000
 #elif defined(__loongarch__) && defined(__LP64__)
 # define TRY_EMPTY_VM_SPACE	0x8000000000
+#elif defined(__sw_64)
+#define TRY_EMPTY_VM_SPACE 0x10000000000
 #else
 # define TRY_EMPTY_VM_SPACE	0
 #endif
diff --git a/gcc/configure b/gcc/configure
index ef0449edd..4a70b7c66 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -25775,6 +25775,29 @@ foo:	.long	25
 	xor	%l1, %tle_lox10(foo), %o5
 	ld	[%g7 + %o5], %o1"
 	;;
+  sw_64*-*-*)
+    conftest_s='
+        .section ".tdata","awT",@progbits
+foo:    .long   25
+        .text
+        ldl     $27,__tls_get_addr($29)         !literal!1
+        ldi     $16,foo($29)                    !tlsgd!1
+        call    $26,($27),__tls_get_addr        !lituse_tlsgd!1
+        ldl     $27,__tls_get_addr($29)         !literal!2
+        ldi     $16,foo($29)                    !tlsldm!2
+        call    $26,($27),__tls_get_addr        !lituse_tlsldm!2
+        ldl     $1,foo($29)                     !gotdtprel
+        ldih    $2,foo($29)                     !dtprelhi
+        ldi     $3,foo($2)                      !dtprello
+        ldi     $4,foo($29)                     !dtprel
+        ldl     $1,foo($29)                     !gottprel
+        ldih    $2,foo($29)                     !tprelhi
+        ldi     $3,foo($2)                      !tprello
+        ldi     $4,foo($29)                     !tprel'
+        tls_first_major=2
+        tls_first_minor=13
+        tls_as_opt=--fatal-warnings
+        ;;
   tilepro*-*-*)
       conftest_s='
 	.section ".tdata","awT",@progbits
@@ -26313,6 +26336,101 @@ fi
 
     ;;
 
+  sw_64*-*-linux* | sw_64*-*-*bsd*)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for explicit relocation support" >&5
+$as_echo_n "checking assembler for explicit relocation support... " >&6; }
+if ${gcc_cv_as_sw_64_explicit_relocs+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  gcc_cv_as_sw_64_explicit_relocs=no
+  if test x$gcc_cv_as != x; then
+    $as_echo '	.set nomacro
+	.text
+	ext0b	$3, $2, $3	!lituse_bytoff!1
+	ldl	$2, a($29)	!literal!1
+	ldl	$4, b($29)	!literal!2
+	ldl_u	$3, 0($2)	!lituse_base!1
+	ldl	$27, f($29)	!literal!5
+	call	$26, ($27), f	!lituse_jsr!5
+	ldih	$29, 0($26)	!gpdisp!3
+	ldi	$0, c($29)	!gprel
+	ldih	$1, d($29)	!gprelhigh
+	ldi	$1, d($1)	!gprellow
+	ldi	$29, 0($29)	!gpdisp!3' > conftest.s
+    if { ac_try='$gcc_cv_as $gcc_cv_as_flags  -o conftest.o conftest.s >&5'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }
+    then
+	gcc_cv_as_sw_64_explicit_relocs=yes
+    else
+      echo "configure: failed program was" >&5
+      cat conftest.s >&5
+    fi
+    rm -f conftest.o conftest.s
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_sw_64_explicit_relocs" >&5
+$as_echo "$gcc_cv_as_sw_64_explicit_relocs" >&6; }
+if test $gcc_cv_as_sw_64_explicit_relocs = yes; then
+
+$as_echo "#define HAVE_AS_EXPLICIT_RELOCS 1" >>confdefs.h
+
+fi
+
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for jsrdirect relocation support" >&5
+$as_echo_n "checking assembler for jsrdirect relocation support... " >&6; }
+if ${gcc_cv_as_sw_64_jsrdirect_relocs+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  gcc_cv_as_sw_64_jsrdirect_relocs=no
+    if test $in_tree_gas = yes; then
+    if test $gcc_cv_gas_vers -ge `expr \( \( 2 \* 1000 \) + 16 \) \* 1000 + 90`
+  then gcc_cv_as_sw_64_jsrdirect_relocs=yes
+fi
+#trouble#
+   elif test x$gcc_cv_as != x; then
+    $as_echo '	.set nomacro
+	.text
+	ldl	$27, a($29)	!literal!1
+	call	$26, ($27), a	!lituse_jsrdirect!1' > conftest.s
+    if { ac_try='$gcc_cv_as $gcc_cv_as_flags  -o conftest.o conftest.s >&5'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }
+    then
+	gcc_cv_as_sw_64_jsrdirect_relocs=yes
+    else
+      echo "configure: failed program was" >&5
+      cat conftest.s >&5
+    fi
+    rm -f conftest.o conftest.s
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_sw_64_jsrdirect_relocs" >&5
+$as_echo "$gcc_cv_as_sw_64_jsrdirect_relocs" >&6; }
+if test $gcc_cv_as_sw_64_jsrdirect_relocs = yes; then
+
+$as_echo "#define HAVE_AS_JSRDIRECT_RELOCS 1" >>confdefs.h
+
+fi
+cat >> confdefs.h <<_ACEOF
+#define FLAG_SW64_ATOMIC 1
+#define FLAG_SW64_90139  1
+#define FLAG_SW64_PREFETCH 1
+#define FLAG_SW64_PROTECT 1
+#define FLAG_SW64_INC_DEC 1
+#define FLAG_SW64_DELNOP 1
+#define FLAG_SW64_FM 1
+_ACEOF
+
+    ;;
+
   avr-*-*)
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for --mlink-relax option" >&5
 $as_echo_n "checking assembler for --mlink-relax option... " >&6; }
@@ -29377,7 +29495,7 @@ esac
 case "$cpu_type" in
   aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | loongarch | m32c \
   | m68k | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
-  | tilegx | tilepro | visium | xstormy16 | xtensa)
+  | sw_64 | tilegx | tilepro | visium | xstormy16 | xtensa)
     insn="nop"
     ;;
   ia64 | s390)
@@ -31151,6 +31269,17 @@ $as_echo "$as_me: WARNING: --build-id is not supported by your linker; --enable-
   fi
 fi
 
+# sw_64  add --enable-linker-no-relax to support linker -Wl,-no-relax
+# Check whether --enable-linker-no-relax was given.
+if test "${enable_linker_no_relax+set}" = set; then :
+  enableval=$enable_linker_no_relax;
+else
+  enable_linker_no_relax=no
+fi
+
+if test x"$enable_linker_no_relax" = xyes; then
+  $as_echo "#define ENABLE_LD_NORELAX 1" >>confdefs.h
+fi
 # In binutils 2.21, GNU ld gained support for new emulations fully
 # supporting the Solaris 2 ABI.  Detect their presence in the linker used.
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking linker *_sol2 emulation support" >&5
diff --git a/gcc/configure.ac b/gcc/configure.ac
index 708ec3fd3..9683ab156 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -23,6 +23,7 @@
 # Initialization and sanity checks
 # --------------------------------
 
+AC_PREREQ(2.64)
 AC_INIT
 AC_CONFIG_SRCDIR(tree.cc)
 AC_CONFIG_HEADER(auto-host.h:config.in)
@@ -4076,6 +4077,29 @@ foo:	.long	25
 	xor	%l1, %tle_lox10(foo), %o5
 	ld	[%g7 + %o5], %o1"
 	;;
+  sw_64*-*-*)
+    conftest_s='
+	.section ".tdata","awT",@progbits
+foo:	.long	25
+	.text
+	ldl	$27,__tls_get_addr($29)		!literal!1
+	ldi	$16,foo($29)			!tlsgd!1
+	call	$26,($27),__tls_get_addr	!lituse_tlsgd!1
+	ldl	$27,__tls_get_addr($29)		!literal!2
+	ldi	$16,foo($29)			!tlsldm!2
+	call	$26,($27),__tls_get_addr	!lituse_tlsldm!2
+	ldl	$1,foo($29)			!gotdtprel
+	ldih	$2,foo($29)			!dtprelhi
+	ldi	$3,foo($2)			!dtprello
+	ldi	$4,foo($29)			!dtprel
+	ldl	$1,foo($29)			!gottprel
+	ldih	$2,foo($29)			!tprelhi
+	ldi	$3,foo($2)			!tprello
+	ldi	$4,foo($29)			!tprel'
+        tls_first_major=2
+        tls_first_minor=13
+	tls_as_opt=--fatal-warnings
+	;;
   tilepro*-*-*)
       conftest_s='
 	.section ".tdata","awT",@progbits
@@ -4677,6 +4701,36 @@ foo:
                 [Define if your assembler supports LEON instructions.])])
     ;;
 
+  sw_64*-*-linux* | sw_64*-*-*bsd*)
+    gcc_GAS_CHECK_FEATURE([explicit relocation support],
+	gcc_cv_as_sw_64_explicit_relocs, [2,12,0],,
+[	.set nomacro
+	.text
+	ext0b	$3, $2, $3	!lituse_bytoff!1
+	ldl	$2, a($29)	!literal!1
+	ldl	$4, b($29)	!literal!2
+	ldl_u	$3, 0($2)	!lituse_base!1
+	ldl	$27, f($29)	!literal!5
+	call	$26, ($27), f	!lituse_jsr!5
+	ldih	$29, 0($26)	!gpdisp!3
+	ldi	$0, c($29)	!gprel
+	ldih	$1, d($29)	!gprelhigh
+	ldi	$1, d($1)	!gprellow
+	ldi	$29, 0($29)	!gpdisp!3],,
+    [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
+  [Define if your assembler supports explicit relocations.])])
+    gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
+	gcc_cv_as_sw_64_jsrdirect_relocs,,
+[	.set nomacro
+	.text
+	ldl	$27, a($29)	!literal!1
+	call	$26, ($27), a	!lituse_jsrdirect!1],,
+    [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
+  [Define if your assembler supports the lituse_jsrdirect relocation.])])
+#    [AC_DEFINE(SW_64_ENABLE_ASAN, 1,
+#  [Define if your target fully enable asan supports.])])
+    ;;
+
 changequote(,)dnl
   i[34567]86-*-* | x86_64-*-*)
 changequote([,])dnl
@@ -5505,7 +5559,7 @@ esac
 # version to the per-target configury.
 case "$cpu_type" in
   aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | loongarch | m32c \
-  | m68k | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
+  | m68k | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc | sw_64 \
   | tilegx | tilepro | visium | xstormy16 | xtensa)
     insn="nop"
     ;;
@@ -6758,6 +6812,31 @@ if test x"$enable_linker_build_id" = xyes; then
   fi
 fi
 
+# --no-relax
+AC_ARG_ENABLE(linker-no-relax,
+[AS_HELP_STRING([--enable-linker-no-relax],
+                [compiler will always pass --no-relax to linker])],
+[],
+enable_linker_no_relax=no)
+
+if test x"$enable_linker_build_id" = xyes; then
+  if test x"$gcc_cv_ld_buildid" = xyes; then
+    AC_DEFINE(ENABLE_LD_BUILDID, 1,
+    [Define if gcc should always pass --build-id to linker.])
+  else
+    AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
+  fi
+fi
+
+# --no-relax
+if test x"$enable_linker_no_relax" = xyes; then
+    AC_DEFINE(ENABLE_LD_NORELAX, 1,
+    [Define if gcc should always pass --no-relax to linker.])
+  else
+    AC_MSG_WARN(--no-relax is not supported by your linker; --enable-linker-no-relax ignored)
+  fi
+fi
+
 # In binutils 2.21, GNU ld gained support for new emulations fully
 # supporting the Solaris 2 ABI.  Detect their presence in the linker used.
 AC_CACHE_CHECK(linker *_sol2 emulation support,
@@ -6930,7 +7009,8 @@ case "$target" in
   powerpc*-*-linux* | \
   sparc*-*-linux* | \
   s390*-*-linux* | \
-  alpha*-*-linux*)
+  alpha*-*-linux*) | \
+  sw_64*-*-linux*)
     AC_ARG_WITH(long-double-128,
       [AS_HELP_STRING([--with-long-double-128],
 		      [use 128-bit long double by default])],
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
index a650f60c7..40dc7ae75 100644
--- a/gcc/doc/install.texi
+++ b/gcc/doc/install.texi
@@ -5005,6 +5005,15 @@ on a Solaris 11 system:
 @heading sparcv9-*-solaris2*
 This is a synonym for @samp{sparc64-*-solaris2*}.
 
+@html
+<hr />
+@end html
+@anchor{sw_64-x-x}
+@heading sw_64*-*-*
+This section contains general configuration information for all
+SW64-based platforms using ELF@.  In addition to reading this
+section, please read all other sections that match your target.
+
 @html
 <hr />
 @end html
-- 
2.25.1