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BEGIN {
print "\
/* generated by syscall.c.awk\n\
* don't modify manually, instead run:\n\
* make src/user/lib/syscall.c\n\
*/\n\
#include <camellia/syscalls.h>\n\
\n";
}
/_syscall\(/ { next; } # skipping _syscall(), it's implemented elsewhere
/\);/ {
sub(/;/, " {");
print $0;
name = substr($0, match($0, /_syscall_[^(]+/), RLENGTH);
rets = substr($0, 0, RSTART - 1);
sub(/ *$/, "", rets)
params = substr($0, match($0, /\(.+\)/) + 1, RLENGTH - 2);
gsub(/\[[^\]]\]/, "", params);
if (params == "void") params = ""
split(params, p, /,/);
for (i = 0; i <= 4; i += 1) {
if (p[i]) {
# p[i] is a parameter, convert it into an expression to pass to _syscall()
sub(/^ */, "", p[i]); # strip
split(p[i], words, / /);
if (length(words) != 1) {
var = words[length(words)];
sub(/\*/, "", var);
if (words[1] != "long") var = "(long)" var;
}
p[i] = var;
} else {
p[i] = 0;
}
}
printf "\t";
if (!index($0, "_Noreturn")) {
printf "return ";
if (rets != "long") printf "(%s)", rets;
}
printf "_syscall(%s, %s, %s, %s, %s);\n", toupper(name), p[1], p[2], p[3], p[4];
if (index($0, "_Noreturn")) print "\t__builtin_unreachable();";
print "}\n";
}
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