forked from KolibriOS/kolibrios
48 lines
1.2 KiB
ArmAsm
48 lines
1.2 KiB
ArmAsm
|
|
.section .init
|
|
|
|
.global __start
|
|
|
|
.align 4
|
|
__start:
|
|
movl $68, %eax
|
|
movl $12, %ebx
|
|
lea __size_of_stack_reserve__, %ecx
|
|
addl $4095, %ecx #load stack size
|
|
andl $-4096, %ecx #align to page granularity
|
|
int $0x40 #and allocate
|
|
testl %eax, %eax
|
|
jz 1f
|
|
|
|
addl %eax, %ecx
|
|
movl %eax, %fs:4
|
|
movl %ecx, %fs:8 #save stack base - low limit
|
|
#save stack top - high limit
|
|
movl %ecx, %esp #reload stack
|
|
|
|
subl $1024, %esp
|
|
|
|
movl $9, %eax
|
|
movl %esp, %ebx
|
|
movl $-1, %ecx
|
|
int $0x40
|
|
|
|
movl 30(%ebx), %eax
|
|
movl %eax, %fs:0 #save pid
|
|
|
|
movl $__tls_map, %edi #init TLS
|
|
movl $32, %ecx
|
|
xorl %eax, %eax
|
|
notl %eax
|
|
|
|
rep
|
|
stosl
|
|
|
|
movb $0xF0, __tls_map
|
|
jmp ___crt_startup
|
|
1:
|
|
int3 #trap to debugger
|
|
|
|
.ascii "No enough memory for stack allocation"
|
|
|