mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-16 03:42:35 +03:00
47 lines
1.2 KiB
ArmAsm
47 lines
1.2 KiB
ArmAsm
|
|
.section .init
|
|
|
|
.global __start
|
|
|
|
#tls:0 pid process id
|
|
#tls:4 tid reserved for thread slot
|
|
#tls:8 thread's stack low limit
|
|
#tls:12 thread's stack high limit
|
|
#tls:16 reseved for libc
|
|
|
|
.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:8
|
|
movl %ecx, %fs:12 #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
|
|
|
|
addl $1024, %esp
|
|
|
|
jmp ___crt_startup
|
|
1:
|
|
int3 #trap to debugger
|
|
|
|
.ascii "No enough memory for stack allocation"
|
|
|