37 lines
1013 B
C
37 lines
1013 B
C
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/*
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* This file is part of the UCB release of Plan 9. It is subject to the license
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* terms in the LICENSE file found in the top-level directory of this
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* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
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* part of the UCB release of Plan 9, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms contained
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* in the LICENSE file.
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*/
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#include <u.h>
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#include <libc.h>
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#include <thread.h>
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#include "threadimpl.h"
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/* first argument goes in a register; simplest just to ignore it */
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static void
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launchermips(int, void (*f)(void *arg), void *arg)
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{
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(*f)(arg);
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threadexits(nil);
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}
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void
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_threadinitstack(Thread *t, void (*f)(void*), void *arg)
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{
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uint32_t *tos;
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tos = (uint32_t*)&t->stk[t->stksize&~7];
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*--tos = (uint32_t)arg;
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*--tos = (uint32_t)f;
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*--tos = 0; /* first arg to launchermips */
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*--tos = 0; /* place to store return PC */
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t->sched[JMPBUFPC] = (uint32_t)launchermips+JMPBUFDPC;
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t->sched[JMPBUFSP] = (uint32_t)tos;
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}
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