Adjust the microblaze standalone toolchain to match vitis expectations.

Enable the following multilibs:

.
le
bs
p
m
fpd
m/fpd
p/m
p/fpd
p/m/fpd
bs/p
bs/m
bs/fpd
bs/m/fpd
bs/p/m
bs/p/fpd
bs/p/m/fpd
le/m64
le/bs
le/p
le/m
le/fpd
le/m/fpd
le/p/m
le/p/fpd
le/p/m/fpd
le/bs/p
le/bs/m
le/bs/fpd
le/bs/m/fpd
le/bs/p/m
le/bs/p/fpd
le/bs/p/m/fpd
le/m64/bs
le/m64/p
le/m64/m
le/m64/fpd
le/m64/m/fpd
le/m64/p/m
le/m64/p/fpd
le/m64/p/m/fpd
le/m64/bs/p
le/m64/bs/m
le/m64/bs/fpd
le/m64/bs/m/fpd
le/m64/bs/p/m
le/m64/bs/p/fpd
le/m64/bs/p/m/fpd

Signed-off-by: Mark Hatle <mark.hatle@xilinx.com>

4 files changed, 165 insertions, 0 deletions

diff --git a/meta-xilinx-standalone/recipes-devtools/gcc/gcc-9/additional-microblaze-multilibs.patch b/meta-xilinx-standalone/recipes-devtools/gcc/gcc-9/additional-microblaze-multilibs.patch
new file mode 100644
index 00000000..a32045bc
--- /dev/null
+++ b/meta-xilinx-standalone/recipes-devtools/gcc/gcc-9/additional-microblaze-multilibs.patch
@@ -0,0 +1,84 @@
+Change the multilib settings to match the expectations of Vitis and related.
+
+The multilib list is as follows:
+
+.;
+le;@mlittle-endian
+bs;@mxl-barrel-shift
+p;@mxl-pattern-compare
+m;@mno-xl-soft-mul
+fpd;@mhard-float
+m/fpd;@mno-xl-soft-mul@mhard-float
+p/m;@mxl-pattern-compare@mno-xl-soft-mul
+p/fpd;@mxl-pattern-compare@mhard-float
+p/m/fpd;@mxl-pattern-compare@mno-xl-soft-mul@mhard-float
+bs/p;@mxl-barrel-shift@mxl-pattern-compare
+bs/m;@mxl-barrel-shift@mno-xl-soft-mul
+bs/fpd;@mxl-barrel-shift@mhard-float
+bs/m/fpd;@mxl-barrel-shift@mno-xl-soft-mul@mhard-float
+bs/p/m;@mxl-barrel-shift@mxl-pattern-compare@mno-xl-soft-mul
+bs/p/fpd;@mxl-barrel-shift@mxl-pattern-compare@mhard-float
+bs/p/m/fpd;@mxl-barrel-shift@mxl-pattern-compare@mno-xl-soft-mul@mhard-float
+le/m64;@mlittle-endian@m64
+le/bs;@mlittle-endian@mxl-barrel-shift
+le/p;@mlittle-endian@mxl-pattern-compare
+le/m;@mlittle-endian@mno-xl-soft-mul
+le/fpd;@mlittle-endian@mhard-float
+le/m/fpd;@mlittle-endian@mno-xl-soft-mul@mhard-float
+le/p/m;@mlittle-endian@mxl-pattern-compare@mno-xl-soft-mul
+le/p/fpd;@mlittle-endian@mxl-pattern-compare@mhard-float
+le/p/m/fpd;@mlittle-endian@mxl-pattern-compare@mno-xl-soft-mul@mhard-float
+le/bs/p;@mlittle-endian@mxl-barrel-shift@mxl-pattern-compare
+le/bs/m;@mlittle-endian@mxl-barrel-shift@mno-xl-soft-mul
+le/bs/fpd;@mlittle-endian@mxl-barrel-shift@mhard-float
+le/bs/m/fpd;@mlittle-endian@mxl-barrel-shift@mno-xl-soft-mul@mhard-float
+le/bs/p/m;@mlittle-endian@mxl-barrel-shift@mxl-pattern-compare@mno-xl-soft-mul
+le/bs/p/fpd;@mlittle-endian@mxl-barrel-shift@mxl-pattern-compare@mhard-float
+le/bs/p/m/fpd;@mlittle-endian@mxl-barrel-shift@mxl-pattern-compare@mno-xl-soft-mul@mhard-float
+le/m64/bs;@mlittle-endian@m64@mxl-barrel-shift
+le/m64/p;@mlittle-endian@m64@mxl-pattern-compare
+le/m64/m;@mlittle-endian@m64@mno-xl-soft-mul
+le/m64/fpd;@mlittle-endian@m64@mhard-float
+le/m64/m/fpd;@mlittle-endian@m64@mno-xl-soft-mul@mhard-float
+le/m64/p/m;@mlittle-endian@m64@mxl-pattern-compare@mno-xl-soft-mul
+le/m64/p/fpd;@mlittle-endian@m64@mxl-pattern-compare@mhard-float
+le/m64/p/m/fpd;@mlittle-endian@m64@mxl-pattern-compare@mno-xl-soft-mul@mhard-float
+le/m64/bs/p;@mlittle-endian@m64@mxl-barrel-shift@mxl-pattern-compare
+le/m64/bs/m;@mlittle-endian@m64@mxl-barrel-shift@mno-xl-soft-mul
+le/m64/bs/fpd;@mlittle-endian@m64@mxl-barrel-shift@mhard-float
+le/m64/bs/m/fpd;@mlittle-endian@m64@mxl-barrel-shift@mno-xl-soft-mul@mhard-float
+le/m64/bs/p/m;@mlittle-endian@m64@mxl-barrel-shift@mxl-pattern-compare@mno-xl-soft-mul
+le/m64/bs/p/fpd;@mlittle-endian@m64@mxl-barrel-shift@mxl-pattern-compare@mhard-float
+le/m64/bs/p/m/fpd;@mlittle-endian@m64@mxl-barrel-shift@mxl-pattern-compare@mno-xl-soft-mul@mhard-float
+
+As part of this the order of the multilibs was changes from upstream to make
+it easier to avoid big-endian m64, which is not supported by the toolchain.
+
+Signed-off-by: Mark Hatle <mark.hatle@xilinx.com>
+
+diff -ur gcc-9.2.0.orig/gcc/config/microblaze/t-microblaze gcc-9.2.0/gcc/config/microblaze/t-microblaze
+--- gcc-9.2.0.orig/gcc/config/microblaze/t-microblaze   2020-02-07 09:46:48.286261214 -0800
++++ gcc-9.2.0/gcc/config/microblaze/t-microblaze        2020-02-10 17:07:52.440598949 -0800
+@@ -1,16 +1,11 @@
+-MULTILIB_OPTIONS = m64 mxl-barrel-shift mlittle-endian mno-xl-soft-mul mxl-multiply-high
+-MULTILIB_DIRNAMES = m64 bs le m mh
+-MULTILIB_EXCEPTIONS = *m64/mxl-multiply-high mxl-multiply-high
+-MULTILIB_EXCEPTIONS += *m64
+-MULTILIB_EXCEPTIONS += *m64/mxl-barrel-shift
+-MULTILIB_EXCEPTIONS += *m64/mno-xl-soft-mul
+-MULTILIB_EXCEPTIONS += *m64/mxl-barrel-shift/mno-xl-soft-mul
+-MULTILIB_EXCEPTIONS += *m64/mno-xl-soft-mul
+-MULTILIB_EXCEPTIONS += *m64/mxl-barrel-shift/mno-xl-soft-mul/mxl-multiply-high
+-MULTILIB_EXCEPTIONS += *m64/mno-xl-soft-mul/mxl-multiply-high
++MULTILIB_OPTIONS = mlittle-endian m64 mxl-barrel-shift mxl-pattern-compare mno-xl-soft-mul mhard-float
++MULTILIB_DIRNAMES = le m64 bs p m fpd
++MULTILIB_EXCEPTIONS = mxl-multiply-high
+ MULTILIB_EXCEPTIONS += *mxl-barrel-shift/mxl-multiply-high mxl-multiply-high
+ MULTILIB_EXCEPTIONS += *mlittle-endian/mxl-multiply-high mxl-multiply-high
+-MULTILIB_EXCEPTIONS += *m64/mxl-barrel-shift/mlittle-endian/mxl-multiply-high
++MULTILIB_EXCEPTIONS += *mxl-pattern-compare*/*mxl-multiply-high*
++# Big endian m64 is not supported
++MULTILIB_EXCEPTIONS += m64*
+ 
+ # Extra files
+ microblaze-c.o: $(srcdir)/config/microblaze/microblaze-c.c \
diff --git a/meta-xilinx-standalone/recipes-devtools/gcc/gcc-source_9.%.bbappend b/meta-xilinx-standalone/recipes-devtools/gcc/gcc-source_9.%.bbappend
new file mode 100644
index 00000000..24abdc11
--- /dev/null
+++ b/meta-xilinx-standalone/recipes-devtools/gcc/gcc-source_9.%.bbappend
@@ -0,0 +1,5 @@
+# Add MicroBlaze Patches (only when using MicroBlaze)
+FILESEXTRAPATHS_append_microblaze_xilinx-standalone := "${THISDIR}/gcc-9:"
+SRC_URI_append_microblaze_xilinx-standalone = " \
+        file://additional-microblaze-multilibs.patch \
+"
diff --git a/meta-xilinx-standalone/recipes-devtools/gcc/mb-convert-head.sh b/meta-xilinx-standalone/recipes-devtools/gcc/mb-convert-head.sh
new file mode 100755
index 00000000..b59dff1e
--- /dev/null
+++ b/meta-xilinx-standalone/recipes-devtools/gcc/mb-convert-head.sh
@@ -0,0 +1,16 @@
+#! /bin/bash
+
+# Call using:
+#../microblaze/sysroots/x86_64-oesdk-linux/usr/bin/microblaze-xilinx-elf/microblaze-xilinx-elf-gcc -print-multi-lib | mb-convert-head.sh
+
+# Then copy the output into the special microblaze-tc BSP
+
+sed -e 's,;, ,' |
+  while read mlib args ; do
+    if [ $mlib = '.' ]; then
+       continue
+    fi
+    multilib="libmb$(echo $mlib | sed -e 's,/,,g')"
+
+    echo 'MULTILIBS += "multilib:'${multilib}'"'
+  done
diff --git a/meta-xilinx-standalone/recipes-devtools/gcc/mb-convert.sh b/meta-xilinx-standalone/recipes-devtools/gcc/mb-convert.sh
new file mode 100755
index 00000000..e05145ec
--- /dev/null
+++ b/meta-xilinx-standalone/recipes-devtools/gcc/mb-convert.sh
@@ -0,0 +1,60 @@
+#! /bin/bash
+
+# Call using:
+#../microblaze/sysroots/x86_64-oesdk-linux/usr/bin/microblaze-xilinx-elf/microblaze-xilinx-elf-gcc -print-multi-lib | mb-convert.sh
+
+# Then copy the output into the special microblaze-tc BSP
+
+mlib_to_feature() {
+  feature_base="microblaze"
+  feature_endian=" bigendian"
+  feature_barrel=""
+  feature_pattern=""
+  feature_multiply=""
+  feature_multiplyhigh=""
+  feature_sixtyfour=""
+  feature_math=""
+  while read feature ; do
+     case $feature in
+       le) feature_endian="";;
+       bs) feature_barrel=" barrel-shift";;
+       p)  feature_pattern=" pattern-compare";;
+       m)  if [ -z ${feature_multiplyhigh} ]; then feature_multiply=" multiply-low" ; fi ;;
+       mh) feature_multiply="" ; feature_multiplyhigh=" multiply-high";;
+       m64) feature_sixtyfour=" 64-bit";;
+       fpd) feature_math=" fpu-hard";;
+       *)   echo "UNKNOWN $feature";;
+     esac
+  done
+  echo "${feature_base}${feature_sixtyfour}${feature_endian}${feature_barrel}${feature_pattern}${feature_multiply}${feature_multiplyhigh}${feature_math}"
+}
+
+sed -e 's,;, ,' |
+  while read mlib args ; do
+    if [ $mlib = '.' ]; then
+      echo '# Base configuration'
+      echo '# CFLAGS:'
+      echo 'DEFAULTTUNE = "microblaze"'
+      echo
+      echo 'AVAILTUNES += "microblaze"'
+      echo 'BASE_LIB_tune-microblaze = "lib"'
+      echo 'TUNE_FEATURES_tune-microblaze = "microblaze bigendian"'
+      echo 'PACKAGE_EXTRA_ARCHS_tune-microblaze = "${TUNE_PKGARCH}"'
+      continue
+    fi
+
+    cflags=$(echo $args | sed -e 's,@, -,g')
+    multilib="libmb$(echo $mlib | sed -e 's,/,,g')"
+    tune="microblaze$(echo $mlib | sed -e 's,m64,64,' -e 's,/,,g')"
+    features=$(echo $mlib | sed -e 's,/, ,g' | xargs -n 1 echo | mlib_to_feature)
+    echo
+    echo
+    echo "# $mlib"
+    echo "# CFLAGS:${cflags}"
+    echo "DEFAULTTUNE_virtclass-multilib-$multilib = \"$tune\""
+    echo
+    echo "AVAILTUNES += \"$tune\""
+    echo "BASE_LIB_tune-$tune = \"lib/$mlib\""
+    echo "TUNE_FEATURES_tune-$tune = \"${features}\""
+    echo "PACKAGE_EXTRA_ARCHS_tune-$tune = \"\${TUNE_PKGARCH}\""
+  done