| 0,0 → 1,46 |
|---|
| |
| .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" |
| |