1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
#define ASM_FILE 1
#include <camellia/syscalls.h>
#include <camellia/flags.h>
.set STACK_TOP, 0xFFFFFFFFFFFFFFFF
.set STACK_PAGES, 4
.section .text.startup
.global _start
.type _start, @function
_start:
mov $_SYSCALL_MEMFLAG, %rdi
mov $(STACK_TOP & ~0xFFF - (STACK_PAGES - 1) * 0x1000), %rsi
mov $(STACK_PAGES * 0x1000), %rdx
mov $MEMFLAG_PRESENT, %r10
syscall
mov $(STACK_TOP & ~0xF), %rsp
mov $_SYSCALL_MEMFLAG, %rdi
mov $_bss_start, %rsi
mov $_bss_end, %rdx
sub $_bss_start, %rdx
mov $MEMFLAG_PRESENT, %r10
mov %rsp, %r8
syscall
jmp main
|
