85 lines
2.0 KiB
Bash
85 lines
2.0 KiB
Bash
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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in="$1"
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out="$2"
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syscall_macro() {
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local abi="$1"
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local nr="$2"
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local entry="$3"
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# Entry can be either just a function name or "function/qualifier"
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real_entry="${entry%%/*}"
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if [ "$entry" = "$real_entry" ]; then
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qualifier=
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else
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qualifier=${entry#*/}
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fi
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echo "__SYSCALL_${abi}($nr, $real_entry, $qualifier)"
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}
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emit() {
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local abi="$1"
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local nr="$2"
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local entry="$3"
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local compat="$4"
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local umlentry=""
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if [ "$abi" != "I386" -a -n "$compat" ]; then
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echo "a compat entry ($abi: $compat) for a 64-bit syscall makes no sense" >&2
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exit 1
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fi
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# For CONFIG_UML, we need to strip the __x64_sys prefix
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if [ "$abi" = "64" -a "${entry}" != "${entry#__x64_sys}" ]; then
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umlentry="sys${entry#__x64_sys}"
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fi
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if [ -z "$compat" ]; then
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if [ -n "$entry" -a -z "$umlentry" ]; then
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syscall_macro "$abi" "$nr" "$entry"
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elif [ -n "$umlentry" ]; then # implies -n "$entry"
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echo "#ifdef CONFIG_X86"
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syscall_macro "$abi" "$nr" "$entry"
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echo "#else /* CONFIG_UML */"
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syscall_macro "$abi" "$nr" "$umlentry"
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echo "#endif"
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fi
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else
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echo "#ifdef CONFIG_X86_32"
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if [ -n "$entry" ]; then
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syscall_macro "$abi" "$nr" "$entry"
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fi
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echo "#else"
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syscall_macro "$abi" "$nr" "$compat"
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echo "#endif"
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fi
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}
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grep '^[0-9]' "$in" | sort -n | (
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while read nr abi name entry compat; do
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abi=`echo "$abi" | tr '[a-z]' '[A-Z]'`
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if [ "$abi" = "COMMON" -o "$abi" = "64" ]; then
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emit 64 "$nr" "$entry" "$compat"
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if [ "$abi" = "COMMON" ]; then
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# COMMON means that this syscall exists in the same form for
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# 64-bit and X32.
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echo "#ifdef CONFIG_X86_X32_ABI"
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emit X32 "$nr" "$entry" "$compat"
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echo "#endif"
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fi
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elif [ "$abi" = "X32" ]; then
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echo "#ifdef CONFIG_X86_X32_ABI"
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emit X32 "$nr" "$entry" "$compat"
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echo "#endif"
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elif [ "$abi" = "I386" ]; then
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emit "$abi" "$nr" "$entry" "$compat"
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else
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echo "Unknown abi $abi" >&2
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exit 1
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fi
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done
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) > "$out"
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