3 files changed, 17 insertions, 2 deletions
diff --git a/src/linux-start.o b/src/linux-start.o
new file mode 100644
index 0000000..72750c8
--- /dev/null
+++ b/src/linux-start.o

Binary files differ
diff --git a/src/linux-start.s b/src/linux-start.s
new file mode 100644
index 0000000..6392e45
--- /dev/null
+++ b/src/linux-start.s

@@ -0,0 +1,16 @@
+.section .text
+.globl _start
+.type _start, @function
+_start:
+        xorq %rbp, %rbp # frame ptr (%rbp) = null. marks stack bottom.
+        movq (%rsp), %rdi # argc = first 4 bytes of stack.
+        leaq 8(%rsp), %rsi # argv = address of first arg ptr.
+        call main
+        movl %eax, %edi # status = ret val.
+        movl $60, %eax # SYS_exit = 60.
+        syscall
+        hlt # if syscall fails hang.
diff --git a/src/start.s b/src/netbsd-start.s
index 683bfe7..e4e960e 100644
--- a/src/start.s
+++ b/src/netbsd-start.s

@@ -4,7 +4,7 @@
 _start:
        xorq %rbp, %rbp # frame ptr (%rbp) = null. marks stack bottom.
-        movl (%rsp), %edi # argc = first 4 bytes of stack.
+        movq (%rsp), %rdi # argc = first 4 bytes of stack.
        leaq 8(%rsp), %rsi # argv = address of first arg ptr.
        call main
@@ -13,5 +13,4 @@ _start:
        movl $1, %eax # SYS_exit = 1.
        syscall
-        .size _start, .-_start
        hlt # if syscall fails hang.

diff --git a/src/linux-start.o b/src/linux-start.o new file mode 100644 index 0000000..72750c8 --- /dev/null +++ b/src/linux-start.o
Binary files differ


diff --git a/src/linux-start.s b/src/linux-start.s new file mode 100644 index 0000000..6392e45 --- /dev/null +++ b/src/linux-start.s
@@ -0,0 +1,16 @@
		1	.section .text
		2	.globl _start
		3	.type _start, @function
		4	_start:
		5	xorq %rbp, %rbp # frame ptr (%rbp) = null. marks stack bottom.
		6
		7	movq (%rsp), %rdi # argc = first 4 bytes of stack.
		8	leaq 8(%rsp), %rsi # argv = address of first arg ptr.
		9
		10	call main
		11
		12	movl %eax, %edi # status = ret val.
		13	movl $60, %eax # SYS_exit = 60.
		14	syscall
		15
		16	hlt # if syscall fails hang.


diff --git a/src/start.s b/src/netbsd-start.s index 683bfe7..e4e960e 100644 --- a/src/start.s +++ b/src/netbsd-start.s
@@ -4,7 +4,7 @@
4	_start:	4	_start:
5	xorq %rbp, %rbp # frame ptr (%rbp) = null. marks stack bottom.	5	xorq %rbp, %rbp # frame ptr (%rbp) = null. marks stack bottom.
6		6
7	movl (%rsp), %edi # argc = first 4 bytes of stack.	7	movq (%rsp), %rdi # argc = first 4 bytes of stack.
8	leaq 8(%rsp), %rsi # argv = address of first arg ptr.	8	leaq 8(%rsp), %rsi # argv = address of first arg ptr.
9		9
10	call main	10	call main
@@ -13,5 +13,4 @@ _start:
13	movl $1, %eax # SYS_exit = 1.	13	movl $1, %eax # SYS_exit = 1.
14	syscall	14	syscall
15		15
16	.size _start, .-_start
17	hlt # if syscall fails hang.	16	hlt # if syscall fails hang.