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xv6-cs450
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Remove left-over from some logging plan making complete syscalls atomic 

0 is not a system call (thanks to Peter Froehlich)
This commit is contained in:
Frans Kaashoek 2012-08-22 20:28:58 -04:00
parent 432acbaf9e
commit 95692c4a8c
2 changed files with 1 additions and 4 deletions
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4
syscall.c
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@ -129,9 +129,7 @@ syscall(void)
int num;
num = proc->tf->eax;
if(num >= 0 && num < SYS_open && syscalls[num]) {
proc->tf->eax = syscalls[num]();
} else if (num >= SYS_open && num < NELEM(syscalls) && syscalls[num]) {
if(num > 0 && num < NELEM(syscalls) && syscalls[num]) {
proc->tf->eax = syscalls[num]();
} else {
cprintf("%d %s: unknown sys call %d\n",

1
syscall.h
View File

@ -13,7 +13,6 @@
#define SYS_sbrk 12
#define SYS_sleep 13
#define SYS_uptime 14
#define SYS_open 15
#define SYS_write 16
#define SYS_mknod 17