Update Binutils to 2.44

Upstream binutils now supports the ratified 1.0.0 bitmanip extensions,
so rather than maintaining patches to add the unratified extensions back
in, a fork of binutils was created which we now use, and should allow
for easier updates to future versions.

The glob and ELF BFD patches are no longer required for this version of
binutils to build correctly so they are removed.

Since the last version of binutils used, the GMP and MPFR libraries have
become required for building GDB. However, the configure step will
always prefer the shared library rather than the static one when
building, so we have to build our own static-only libraries of these to
link.

MPFR is clone-able from the official repository, however GMP does not
appreciate excessive cloning, so we use a release archive instead for
that.

The updated binutils contain a change for generating verilog memory
(vmem) files that is useful for OpenTitan.

See also: https://github.com/lowRISC/binutils

Signed-off-by: Alice Ziuziakowska <[email protected]>

Author: ziuziakowska

README.md

@@ -40,17 +40,6 @@ How to do a release
    will be uploaded to
    [GitHub releases](https://github.com/lowRISC/lowrisc-toolchains/releases).
 
-How to generate the bitmanip patch
-------------------------------------
-
-```
-git clone https://github.com/riscv-collab/riscv-binutils-gdb.git
-cd riscv-binutils-gdb
-# checkout Pirmin's bitmanip 1.00+0.93 PR (https://github.com/riscv-collab/riscv-binutils-gdb/pull/267)
-gh pr checkout 267
-# 7c9dd840 (riscv-binutils-2.35-rvb) is our baseline
-git diff 7c9dd840 > $TOP/patches/lowrisc-toolchain-gcc-rv32imcb/binutils/git-7c9dd840/001-bitmanip.patch
-```
 How to install pre-built toolchain
 ------------------------------------
 1. Download a tar.gz file from release page.

build-binutils.sh

@@ -17,6 +17,7 @@ repo_dir="$(git rev-parse --show-toplevel)"
 build_dir="${repo_dir}/build"
 patch_dir="${repo_dir}/patches"
 dist_dir="${build_dir}/dist"
+static_libs_dir="${build_dir}/libs"
 
 source "${repo_dir}/sw-versions.sh"
 
@@ -41,7 +42,9 @@ fi
 
 set -x
 
+mkdir -p "$dist_dir"
 mkdir -p "$build_dir"
+mkdir -p "$static_libs_dir"
 cd "$build_dir"
 
 if [ ! -d binutils ]; then
@@ -50,21 +53,54 @@ if [ ! -d binutils ]; then
     --depth 1
 fi
 
-cd binutils
-git reset --hard
-git checkout "$BINUTILS_COMMIT"
-git apply "${patch_dir}/binutils/"*
+if [ ! -d gmp ]; then
+    tmp=$(mktemp -d)
+    mkdir -p ${tmp}/gmp
+    curl -L "$GMP_URL" -o "${tmp}/gmp.tar.xz"
+    printf "$GMP_SHA256  ${tmp}/gmp.tar.xz\n" > ${tmp}/gmp.sha256
+    sha256sum -c ${tmp}/gmp.sha256
+    xzcat ${tmp}/gmp.tar.xz | tar --strip-components=1 -C ${tmp}/gmp -x -v -f -
+    mv ${tmp}/gmp gmp
+    rm ${tmp}/gmp.tar.xz
+fi
 
-mkdir -p build
-cd build
+if [ ! -d mpfr ]; then
+    git clone "$MPFR_URL" mpfr \
+    --branch "$MPFR_BRANCH" \
+    --depth 1
+fi
 
-mkdir -p "$dist_dir"
+cd gmp
+./configure \
+    --enable-static=yes \
+    --enable-shared=no \
+    --prefix=$static_libs_dir
+make -j "$(nproc)"
+make -j "$(nproc)" check
+make install
+cd ..
 
-../configure \
-  --target="$target" \
-  --program-prefix="$target-" \
-  --prefix="$dist_dir" \
-  --with-libexpat-type=static
+cd mpfr
+./autogen.sh
+./configure \
+    --enable-static=yes \
+    --enable-shared=no \
+    --with-gmp=$static_libs_dir \
+    --prefix=$static_libs_dir
+make -j "$(nproc)"
+make install
+cd ..
 
+cd binutils
+mkdir -p build
+cd build
+../configure \
+    --target="$target" \
+    --program-prefix="$target-" \
+    --prefix="$dist_dir" \
+    --with-libexpat-type=static \
+    --with-gmp=$static_libs_dir \
+    --with-mpfr=$static_libs_dir
 make -j "$(nproc)"
+make -C gas check
 make install