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Implement cpu_set_upcall_kse(). Elementary testing shows that this

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function behaves correctly in principle, but is not expected to be
100% complete. In any case, with this commit we have KSE ported
enough to start runtime testing with threaded applications and fix
whatever bugs or omissions we encounter. Yay!
This commit is contained in:
marcel 2003-06-28 09:22:25 +00:00
parent 47cfe5988b
commit 96d5411913
1 changed files with 26 additions and 0 deletions
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26
sys/ia64/ia64/vm_machdep.c
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@ -149,6 +149,32 @@ cpu_set_upcall(struct thread *td, struct thread *td0)
void
cpu_set_upcall_kse(struct thread *td, struct kse_upcall *ku)
{
struct ia64_fdesc *fd;
struct trapframe *tf;
uint64_t stack;
tf = td->td_frame;
KASSERT(tf->tf_flags & FRAME_SYSCALL, ("foo"));
bzero(&tf->tf_special, sizeof(tf->tf_special));
/*
* ku->ku_func of course points to a function descriptor. Fetch the
* code address and GP value from userland.
*/
fd = ku->ku_func;
tf->tf_special.rp = fuword(&fd->func);
tf->tf_special.gp = fuword(&fd->gp);
tf->tf_special.pfs = (3UL<<62) | (1UL<<7) | 1UL;
stack = (uint64_t)ku->ku_stack.ss_sp;
tf->tf_special.bspstore = stack + 8;
tf->tf_special.sp = (stack + ku->ku_stack.ss_size - 16) & ~15;
tf->tf_special.rsc = 0xf;
tf->tf_special.fpsr = IA64_FPSR_DEFAULT;
tf->tf_special.psr = IA64_PSR_IC | IA64_PSR_I | IA64_PSR_IT |
IA64_PSR_DT | IA64_PSR_RT | IA64_PSR_DFH | IA64_PSR_BN |
IA64_PSR_CPL_USER;
/* XXX assumes that (bspstore & 0x1f8) < 0x1e0. */
suword((caddr_t)tf->tf_special.bspstore - 8, (uint64_t)ku->ku_mailbox);
}
/*