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more freebsd work

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This commit is contained in:
rsc 2004-12-28 04:20:39 +00:00
parent 9cb22ba607
commit d54ead7fb9
10 changed files with 118 additions and 40 deletions
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49
src/libthread/FreeBSD.c
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@ -1,11 +1,3 @@
#include "u.h"
#include <errno.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sched.h>
#include <signal.h>
#include "libc.h"
#include "thread.h"
#include "threadimpl.h"
extern int __isthreaded;
@ -70,7 +62,6 @@ _spinlock(spinlock_t *lk)
{
lock((Lock*)&lk->access_lock);
}
__isthreaded = 1;
/*
* sleep and wakeup
@ -351,6 +342,46 @@ _threadsetproc(Proc *p)
void
_pthreadinit(void)
{
__isthreaded = 1;
signal(SIGUSR2, sigusr2handler);
}
/*
* FreeBSD 4 and earlier needs the context functions.
*/
void
makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
{
int *sp;
sp = (int*)ucp->uc_stack.ss_sp+ucp->uc_stack.ss_size/4;
sp -= argc;
memmove(sp, &argc+1, argc*sizeof(int));
*--sp = 0; /* return address */
ucp->uc_mcontext.mc_eip = (long)func;
ucp->uc_mcontext.mc_esp = (int)sp;
}
extern int getmcontext(mcontext_t*);
extern int setmcontext(mcontext_t*);
int
getcontext(ucontext_t *uc)
{
return getmcontext(&uc->uc_mcontext);
}
void
setcontext(ucontext_t *uc)
{
setmcontext(&uc->uc_mcontext);
}
int
swapcontext(ucontext_t *oucp, ucontext_t *ucp)
{
if(getcontext(oucp) == 0)
setcontext(ucp);
return 0;
}