1 files changed, 80 insertions, 0 deletions
diff --git a/build-aux/extract-syscall-ranges.sh b/build-aux/extract-syscall-ranges.sh
new file mode 100755
index 0000000000..3826fc25fe
--- /dev/null
+++ b/build-aux/extract-syscall-ranges.sh
@@ -0,0 +1,80 @@
+#!/bin/sh
+
+if test "$#" -lt 1 || test "$#" -gt 2
+then
+    echo "Usage: extract-syscall-ranges.sh FILENAME [abiname_regex]"
+    exit 1
+fi
+
+numbers_to_ranges()
+{
+    if ! read number
+    then
+        printf '{}\n'
+        return
+    fi
+    low="$number"
+    high="$number"
+    while true
+    do
+        if read number
+        then
+            if test "$number" -eq "$((high + 1))"
+            then
+                high="$number"
+            else
+                break
+            fi
+        else
+            printf '{ {%d, %d} }\n' "$low" "$high"
+            return
+        fi
+    done
+    printf '{ {%d, %d}' "$low" "$high"
+    low="$number"
+    high="$number"
+    while true
+    do
+        if read number
+        then
+            if test "$number" -eq "$((high + 1))"
+            then
+                high="$number"
+            else
+                printf ', {%d, %d}' "$low" "$high"
+                low="$number"
+                high="$number"
+            fi
+        else
+            printf ', {%d, %d} }\n' "$low" "$high"
+            return
+        fi
+    done
+}
+
+if test "$#" -eq 2
+then
+    abi_regex="$2"
+    getnumbers()
+    {
+        # delete comment lines and space-only lines
+        sed -e '/^[[:space:]]*#/d ; /^[[:space:]]*$/d' |
+            # filter to only include lines with target abi or "common"
+            grep -E "^[0-9]+[[:space:]]+(common|(${abi_regex}))[[:space:]]" |
+            # limit to only syscall number
+            sed -e 's/\([0-9]\+\).*/\1/g'
+    }
+else
+    getnumbers()
+    {
+        # delete comment lines and space-only lines and limit to syscall number
+        sed -e '/^[[:space:]]*#/d ; /^[[:space:]]*$/d ; s/\([0-9]\+\).*/\1/g'
+    }
+fi
+
+getnumbers < "$1" |
+    sort -n |
+    uniq | # Yes, there are duplicate syscall entries...
+    numbers_to_ranges
+
+