initial version

2012-08-22 12:32:13 +08:00
parent e325fad98f
commit 15f7ebf37b
743 changed files with 94930 additions and 0 deletions
--- a/code/lab5/user/libs/initcode.S
+++ b/code/lab5/user/libs/initcode.S
@@ -0,0 +1,14 @@
+.text
+.globl _start
+_start:
+    # set ebp for backtrace
+    movl $0x0, %ebp
+
+    # move down the esp register
+    # since it may cause page fault in backtrace
+    subl $0x20, %esp
+
+    # call user-program function
+    call umain
+1:  jmp 1b
+