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xv6-public
提交 95692c4a 创建 作者: Frans Kaashoek's avatar Frans Kaashoek
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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)
上级 432acbaf
隐藏空白字符变更
内嵌 并排
正在显示 包含 1 行增加 和 4 行删除
syscall.c
浏览文件 @ 95692c4a
...@@ -129,9 +129,7 @@ syscall(void) ...@@ -129,9 +129,7 @@ syscall(void)
int num; int num;
num = proc->tf->eax; num = proc->tf->eax;
if(num >= 0 && num < SYS_open && syscalls[num]) { if(num > 0 && num < NELEM(syscalls) && syscalls[num]) {
proc->tf->eax = syscalls[num]();
} else if (num >= SYS_open && num < NELEM(syscalls) && syscalls[num]) {
proc->tf->eax = syscalls[num](); proc->tf->eax = syscalls[num]();
} else { } else {
cprintf("%d %s: unknown sys call %d\n", cprintf("%d %s: unknown sys call %d\n",
......
syscall.h
浏览文件 @ 95692c4a
...@@ -13,7 +13,6 @@ ...@@ -13,7 +13,6 @@
#define SYS_sbrk 12 #define SYS_sbrk 12
#define SYS_sleep 13 #define SYS_sleep 13
#define SYS_uptime 14 #define SYS_uptime 14
#define SYS_open 15 #define SYS_open 15
#define SYS_write 16 #define SYS_write 16
#define SYS_mknod 17 #define SYS_mknod 17
......
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