| #!/bin/sh |
| # SPDX-License-Identifier: GPL-2.0 |
| # |
| # Generate C file mapping errno codes to errno names. |
| # |
| # Copyright IBM Corp. 2018 |
| # Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> |
| |
| gcc="$1" |
| toolsdir="$2" |
| include_path="-I$toolsdir/include/uapi" |
| |
| arch_string() |
| { |
| echo "$1" |sed -e 'y/- /__/' |tr '[[:upper:]]' '[[:lower:]]' |
| } |
| |
| asm_errno_file() |
| { |
| local arch="$1" |
| local header |
| |
| header="$toolsdir/arch/$arch/include/uapi/asm/errno.h" |
| if test -r "$header"; then |
| echo "$header" |
| else |
| echo "$toolsdir/include/uapi/asm-generic/errno.h" |
| fi |
| } |
| |
| create_errno_lookup_func() |
| { |
| local arch=$(arch_string "$1") |
| local nr name |
| |
| cat <<EoFuncBegin |
| static const char *errno_to_name__$arch(int err) |
| { |
| switch (err) { |
| EoFuncBegin |
| |
| while read name nr; do |
| printf '\tcase %d: return "%s";\n' $nr $name |
| done |
| |
| cat <<EoFuncEnd |
| default: |
| return "(unknown)"; |
| } |
| } |
| |
| EoFuncEnd |
| } |
| |
| process_arch() |
| { |
| local arch="$1" |
| local asm_errno=$(asm_errno_file "$arch") |
| |
| $gcc $include_path -E -dM -x c $asm_errno \ |
| |grep -hE '^#define[[:blank:]]+(E[^[:blank:]]+)[[:blank:]]+([[:digit:]]+).*' \ |
| |awk '{ print $2","$3; }' \ |
| |sort -t, -k2 -nu \ |
| |IFS=, create_errno_lookup_func "$arch" |
| } |
| |
| create_arch_errno_table_func() |
| { |
| local archlist="$1" |
| local default="$2" |
| local arch |
| |
| printf 'const char *arch_syscalls__strerrno(const char *arch, int err)\n' |
| printf '{\n' |
| for arch in $archlist; do |
| printf '\tif (!strcmp(arch, "%s"))\n' $(arch_string "$arch") |
| printf '\t\treturn errno_to_name__%s(err);\n' $(arch_string "$arch") |
| done |
| printf '\treturn errno_to_name__%s(err);\n' $(arch_string "$default") |
| printf '}\n' |
| } |
| |
| cat <<EoHEADER |
| /* SPDX-License-Identifier: GPL-2.0 */ |
| |
| #include <string.h> |
| |
| EoHEADER |
| |
| # Create list of architectures and ignore those that do not appear |
| # in tools/perf/arch |
| archlist="" |
| for arch in $(find $toolsdir/arch -maxdepth 1 -mindepth 1 -type d -printf "%f\n" | grep -v x86 | sort); do |
| test -d $toolsdir/perf/arch/$arch && archlist="$archlist $arch" |
| done |
| |
| for arch in x86 $archlist generic; do |
| process_arch "$arch" |
| done |
| create_arch_errno_table_func "x86 $archlist" "generic" |