procd: Replace strerror(errno) with %m.

[project/procd.git] / make_syscall_h.sh

diff --git a/make_syscall_h.sh b/make_syscall_h.sh
index 57333fd..18d9131 100755 (executable)
--- a/make_syscall_h.sh
+++ b/make_syscall_h.sh
@@ -12,7 +12,53 @@ CC=$1
 [ -n "$TARGET_CC_NOCACHE" ] && CC=$TARGET_CC_NOCACHE
 
 echo "#include <asm/unistd.h>"
-echo "static const char *syscall_names[] = {"
+echo "static const char *__syscall_names[] = {"
 echo "#include <sys/syscall.h>" | ${CC} -E -dM - | grep '^#define __NR_' | \
-       LC_ALL=C sed -r -n -e 's/^\#define[ \t]+__NR_([a-z0-9_]+)[ \t]+([ ()+0-9NR_Linux]+)(.*)/ [\2] = "\1",/p'
+       LC_ALL=C sed -r -n -e 's/^\#define[ \t]+__NR_([a-z0-9_]+)[ \t]+([ ()+0-9a-zNR_Linux]+)(.*)/ [\2] = "\1",/p'
 echo "};"
+
+extra_syscalls="$(echo "#include <sys/syscall.h>" | ${CC} -E -dM - | sed -n -e '/^#define __ARM_NR_/ s///p')"
+
+cat <<EOF
+static inline const char *syscall_name(unsigned i) {
+  if (i < ARRAY_SIZE(__syscall_names))
+    return __syscall_names[i];
+  switch (i) {
+EOF
+echo "$extra_syscalls" | \
+    LC_ALL=C sed -r -n -e 's/^([a-z0-9_]+)[ \t]+([ ()+0-9a-zNR_Linux]+)(.*)/    case \2: return "\1";/p'
+cat <<EOF
+  default: return (void*)0;
+  }
+}
+EOF
+
+cat <<EOF
+static inline int syscall_index(unsigned i) {
+  if (i < ARRAY_SIZE(__syscall_names))
+    return i;
+  switch (i) {
+EOF
+echo "$extra_syscalls" | \
+    LC_ALL=C perl -ne 'print "  case $2: return ARRAY_SIZE(__syscall_names) + ", $. - 1, ";\n" if /^([a-z0-9_]+)[ \t]+([ ()+0-9a-zNR_Linux]+)(.*)/;'
+cat <<EOF
+  default: return -1;
+  }
+}
+EOF
+
+cat <<EOF
+static inline int syscall_index_to_number(unsigned i) {
+  if (i < ARRAY_SIZE(__syscall_names))
+    return i;
+  switch (i) {
+EOF
+echo "$extra_syscalls" | \
+    LC_ALL=C perl -ne 'print "  case ARRAY_SIZE(__syscall_names) + ", $. - 1, ": return $2;\n" if /^([a-z0-9_]+)[ \t]+([ ()+0-9a-zNR_Linux]+)(.*)/;'
+cat <<EOF
+  default: return -1;
+  }
+}
+EOF
+
+echo "#define SYSCALL_COUNT (ARRAY_SIZE(__syscall_names) + $({ test -n "$extra_syscalls" && echo "$extra_syscalls"; } | wc -l))"