On Thu, Jul 27, 2000 at 04:16:17PM +0900, Tsubai Masanari wrote:

 > This patch seems to work for me.
 > I think these cache flushes are not needed because sys_execve() does
 > pmap_procwr() for the same region, but I'm not sure...

Heh, see discussion on port-mips@netbsd.org about problems with this
on the R3000 Magnums.

 > *** mips_machdep.c~	Mon Jul 24 18:32:37 2000
 > --- mips_machdep.c	Thu Jul 27 16:09:26 2000
 > ***************
 > *** 662,670 ****
 > --- 662,673 ----
 >   	struct exec_package *pack;
 >   	u_long stack;
 >   {
 > + #if 0
 >   	int szsigcode = pack->ep_emul->e_esigcode - pack->ep_emul->e_sigcode;
 > + #endif
 >   	struct frame *f = (struct frame *)p->p_md.md_regs;
 >   
 > + #if 0
 >   	/*
 >   	 * Make sure sigreturn trampoline is coherent.
 >   	 */
 > ***************
 > *** 673,678 ****
 > --- 676,682 ----
 >   		MachFlushDCache((vaddr_t)p->p_sigacts->ps_sigcode, szsigcode);
 >   #endif
 >   	MachFlushICache((vaddr_t)p->p_sigacts->ps_sigcode, szsigcode);
 > + #endif
 >   
 >   	memset(f, 0, sizeof(struct frame));
 >   	f->f_regs[SP] = (int) stack;
 > 

-- 
        -- Jason R. Thorpe <thorpej@zembu.com>