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5e: added semacquire/semrelease

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This commit is contained in:
aiju 2011-08-07 19:14:26 +02:00
parent 7169336c09
commit 3a8e788bef
1 changed files with 32 additions and 0 deletions
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32
sys/src/cmd/5e/sys.c
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@ -614,6 +614,36 @@ sysalarm(void)
P->R[0] = alarm(msec); P->R[0] = alarm(msec);
} }
static void
syssemacquire(void)
{
u32int addr, block;
long *addrt;
addr = arg(0);
block = arg(1);
if(systrace)
fprint(2, "semacquire(%#ux, %ud)\n", addr, block);
addrt = vaddrnol(addr, 4);
P->R[0] = noteerr(semacquire(addrt, block), 0);
}
static void
syssemrelease(void)
{
u32int addr, count;
long *addrt;
Segment *seg;
addr = arg(0);
count = arg(1);
if(systrace)
fprint(2, "semrelease(%#ux, %ud)\n", addr, count);
addrt = vaddr(addr, 4, &seg);
P->R[0] = noteerr(semrelease(addrt, count), 0);
segunlock(seg);
}
void void
syscall(void) syscall(void)
{ {
@ -648,6 +678,8 @@ syscall(void)
[MOUNT] sysmount, [MOUNT] sysmount,
[REMOVE] sysremove, [REMOVE] sysremove,
[ALARM] sysalarm, [ALARM] sysalarm,
[SEMACQUIRE] syssemacquire,
[SEMRELEASE] syssemrelease,
}; };
n = P->R[0]; n = P->R[0];