kern
annotate src/test_proc.S @ 69:b45e2d5f0ae1
ok I *think* i've fixed it now
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Wed, 12 Oct 2011 14:39:40 +0300 |
| parents | 39188bbe8638 |
| children | c7bd6ec7b946 |
| rev | line source |
|---|---|
| nuclear@51 | 1 #define ASM |
| nuclear@51 | 2 #include <syscall.h> |
| nuclear@44 | 3 |
| nuclear@44 | 4 .text |
| nuclear@44 | 5 .globl test_proc |
| nuclear@44 | 6 test_proc: |
| nuclear@57 | 7 /* fork another process */ |
| nuclear@57 | 8 movl $SYS_FORK, %eax |
| nuclear@57 | 9 int $SYSCALL_INT |
| nuclear@57 | 10 |
| nuclear@69 | 11 push %eax |
| nuclear@69 | 12 |
| nuclear@57 | 13 infloop: |
| nuclear@44 | 14 /* --- print a message --- */ |
| nuclear@44 | 15 movl $SYS_HELLO, %eax |
| nuclear@44 | 16 int $SYSCALL_INT |
| nuclear@44 | 17 |
| nuclear@60 | 18 /* --- call getpid --- |
| nuclear@60 | 19 * we'll use the process id, multiplied by two as a |
| nuclear@60 | 20 * sleep interval, to avoid having the two test processes |
| nuclear@60 | 21 * sleep for identical amounts of time. |
| nuclear@60 | 22 */ |
| nuclear@57 | 23 movl $SYS_GETPID, %eax |
| nuclear@57 | 24 int $SYSCALL_INT |
| nuclear@57 | 25 movl %eax, %ebx |
| nuclear@57 | 26 shl $1, %ebx |
| nuclear@57 | 27 |
| nuclear@60 | 28 /* --- sleep for (pid * 2) seconds --- |
| nuclear@60 | 29 * ebx (the argument to sleep) already contains the |
| nuclear@60 | 30 * correct value |
| nuclear@60 | 31 */ |
| nuclear@44 | 32 movl $SYS_SLEEP, %eax |
| nuclear@44 | 33 int $SYSCALL_INT |
| nuclear@44 | 34 |
| nuclear@57 | 35 jmp infloop |
| nuclear@44 | 36 |
| nuclear@44 | 37 .globl test_proc_end |
| nuclear@44 | 38 test_proc_end: |