x86_64: Glue code: Keep stack 16-byte-aligned

Signed-off-by: Jérôme Duval <[email protected]>

src/system/glue/arch/x86_64/crti.S

@@ -30,6 +30,7 @@ FUNCTION(_init):
 
 	// Preserve image ID for call to __haiku_init_after.
 	push	%rdi
+	sub		$0x8, %rsp
 
 	call	__haiku_init_before
 	// crtbegin.o stuff comes here
@@ -39,5 +40,6 @@ FUNCTION(_fini):
 	push	%rbp
 	movq	%rsp, %rbp
 	push	%rdi
+	sub		$0x8, %rsp
 	call	__haiku_term_before
 	// crtend.o stuff comes here

src/system/glue/arch/x86_64/crtn.S

@@ -13,6 +13,7 @@
 
 .section .init
 	// The image ID is preserved on the stack.
+	add		$0x8, %rsp
 	pop		%rdi
 	call	__haiku_init_after
 	movq	%rbp, %rsp
@@ -20,6 +21,7 @@
 	ret
 
 .section .fini
+	add		$0x8, %rsp
 	pop		%rdi
 	call	__haiku_term_after
 	movq	%rbp, %rsp