Apply appropriate changes from main branch to bring win0405-branch up

[pintos-anon] / src / threads / intr-stubs.pl

diff --git a/src/threads/intr-stubs.pl b/src/threads/intr-stubs.pl
new file mode 100755 (executable)
index 0000000..75cde7b
--- /dev/null
+++ b/src/threads/intr-stubs.pl
@@ -0,0 +1,66 @@
+#! /usr/bin/perl
+
+print <<'EOF';
+#include "threads/loader.h"
+
+       .data
+       .intel_syntax noprefix
+.globl intr_stubs
+intr_stubs:
+EOF
+
+for $i (0...255) {
+    $x = sprintf ("%02x", $i);
+    print "\t.long intr${x}_stub\n";
+}
+
+print <<'EOF';
+
+       .text
+EOF
+
+for $i (0...255) {
+    $x = sprintf ("%02x", $i);
+    print ".globl intr${x}_stub\n";
+    print "intr${x}_stub:\n";
+    print "\tpush 0\n"
+       if ($i != 8 && $i != 10 && $i != 11
+           && $i != 13 && $i != 14 && $i != 17);
+    print "\tpush 0x$x\n";
+    print "\tjmp intr_entry\n";
+}
+
+print <<'EOF';
+intr_entry:
+       # Save caller's registers.
+       push ds
+       push es
+       push fs
+       push gs
+       pusha
+
+       # Set up kernel environment.
+       cld
+       mov eax, SEL_KDSEG
+       mov ds, eax
+       mov es, eax
+
+       # Call interrupt handler.
+       push esp
+.globl intr_handler
+       call intr_handler
+       add esp, 4
+
+.globl intr_exit
+intr_exit:
+       # Restore caller's registers.
+       popa
+       pop gs
+       pop fs
+       pop es
+       pop ds
+       add esp, 8
+
+        # Return to caller.
+       iret
+EOF