Set up a frame pointer on interrupt entry, to improve backtraces of

[pintos-anon] / src / threads / loader.S

diff --git a/src/threads/loader.S b/src/threads/loader.S
index 2bfe1a45304c8756fb1cba4b14bd30af076c6320..11ab7c9e4d1e5f2bb6ddc1753532528ae1a65681 100644 (file)
--- a/src/threads/loader.S
+++ b/src/threads/loader.S
@@ -119,6 +119,7 @@ start:
        mov ah, 0x88
        int 0x15
        jc panic
+       cli                     # BIOS might have enabled interrupts
        add eax, 1024           # Total kB memory
        cmp eax, 0x10000        # Cap at 64 MB
        jbe 1f
@@ -313,7 +314,7 @@ panic:  .code16                     # We only panic in real mode.
        jmp 1b
 
 panicmsg:
-       .ascii "Loader panic!\r\n"
+       .ascii "Panic!"
        .byte 0
 
 #### Memory size in 4 kB pages.