elfboot: initial version

2011-09-22 18:56:55 +09:00
commit 1b054d6e1e
7 changed files with 225 additions and 0 deletions
--- a/elfboot/head.S
+++ b/elfboot/head.S
@@ -0,0 +1,23 @@
+.text
+.globl _start
+_start:	
+		leaq _stack_end(%rip), %rsp
+		/* preserve arguments */
+		pushq %rdi
+		pushq %rsi
+		pushq %rdx
+		pushq %rcx
+		leaq _stack_end(%rip), %rdi
+		call elfboot_main
+		andq %rax, %rax
+		jz   1f
+		popq %rcx
+		popq %rdx
+		popq %rsi
+		popq %rdi
+		jmpq *%rax				
+1:		
+		cli
+		hlt
+		jmp 1b
+