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Implement cpu_set_upcall_kse(). Further tweaking may be needed after

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testing.
This commit is contained in:
Marcel Moolenaar 2003-08-11 01:38:23 +00:00
parent f9999c67be
commit 9df7b8eac4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=118761
1 changed files with 24 additions and 3 deletions
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27
sys/alpha/alpha/vm_machdep.c
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@ -248,8 +248,6 @@ cpu_sched_exit(td)
void
cpu_thread_exit(struct thread *td)
{
return;
}
void
@ -318,8 +316,31 @@ cpu_set_upcall(struct thread *td, struct thread *td0)
void
cpu_set_upcall_kse(struct thread *td, struct kse_upcall *ku)
{
struct pcb *pcb;
struct trapframe *tf;
uint64_t stack;
/* XXX */
pcb = td->td_pcb;
tf = td->td_frame;
stack = ((uint64_t)ku->ku_stack.ss_sp + ku->ku_stack.ss_size) & ~15;
bzero(tf->tf_regs, FRAME_SIZE * sizeof(tf->tf_regs[0]));
bzero(&pcb->pcb_fp, sizeof(pcb->pcb_fp));
pcb->pcb_fp_control = 0;
pcb->pcb_fp.fpr_cr = FPCR_DYN_NORMAL | FPCR_INVD | FPCR_DZED |
FPCR_OVFD | FPCR_INED | FPCR_UNFD;
if (td != curthread) {
pcb->pcb_hw.apcb_usp = stack;
pcb->pcb_hw.apcb_unique = 0;
} else {
alpha_pal_wrusp(stack);
alpha_pal_wrunique(0);
}
tf->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET;
tf->tf_regs[FRAME_PC] = (u_long)ku->ku_func;
tf->tf_regs[FRAME_A0] = (u_long)ku->ku_mailbox;
tf->tf_regs[FRAME_T12] = tf->tf_regs[FRAME_PC]; /* aka. PV */
tf->tf_regs[FRAME_FLAGS] = 0; /* full restore */
}
/*