mstrace

syscalls.sh (1282B)

#!/bin/sh
# SPDX-FileCopyrightText: 2024 Haelwenn (lanodan) Monnier <contact+mstrace@hacktivis.me>
# SPDX-License-Identifier: MPL-2.0
grep -v '^#' syscalls.txt | while read syscall args
do
	fmt='">%s("'
	fmt_args='str_syscalls[nr]'
	fmt_sep=''
	n=0
	for i in $args; do
		case $i in
		"")
			break
			;;
		size)
			fmt="${fmt}${fmt_sep}\"%zd\""
			fmt_args="${fmt_args}, (size_t)args[$n]"
			;;
		off)
			fmt="${fmt}${fmt_sep}Pri_u"
			fmt_args="${fmt_args}, (off_t)args[$n]"
			;;
		uint)
			fmt="${fmt}${fmt_sep}Pri_u"
			fmt_args="${fmt_args}, (uint64_t)args[$n]"
			;;
		int)
			fmt="${fmt}${fmt_sep}Pri_i"
			fmt_args="${fmt_args}, (int64_t)args[$n]"
			;;
		oct)
			fmt="${fmt}${fmt_sep}Pri_o"
			fmt_args="${fmt_args}, (int64_t)args[$n]"
			;;
		hex|buf|str)
			fmt="${fmt}${fmt_sep}Pri_x"
			fmt_args="${fmt_args}, (int64_t)args[$n]"
			;;
		path)
			fmt="${fmt}${fmt_sep}Pri_str"
			fmt_args="${fmt_args}, read_str(args[$n], PATH_MAX)"
			;;
		*)
			echo "syscalls.sh: error: Unhandled type ${i}" >&2
			exit 1
		esac
		: $((n+=1))
		fmt_sep=' ", " '
	done
	fmt="${fmt}"' ")"'
	printf '#ifdef SYS_%s\n' "$syscall"
	printf '	case SYS_%s:\n' "$syscall"
	printf '		fprintf(out, %s, %s);\n' "$fmt" "$fmt_args"
	printf '		return;\n'
	printf '#endif\n'
done >syscalls_cases.h