PERFORCE change 103819 for review

[Oleksandr Tymoshenko]

http://perforce.freebsd.org/chv.cgi?CH=103819

Change 103819 by gonzo at gonzo_hq on 2006/08/14 08:50:21

	o Make threads' stack aligned to 8 bytes. It's
	    required by EABI for proper handling of 64-bits
	    arguments in va_args.

Affected files ...

.. //depot/projects/mips2/src/sys/mips/mips/vm_machdep.c#7 edit

Differences ...

==== //depot/projects/mips2/src/sys/mips/mips/vm_machdep.c#7 (text+ko) ====

@@ -188,10 +188,11 @@
 	 * Enable interrupts and unmask timer interrupt (HW IRQ5)
 	 */	 
 	td->td_pcb->pcb_regs[PCB_REG_SR] = MIPS_SR_INT_IE | 
-		(((1 << 5) << 8) << 2);
+	    (((1 << 5) << 8) << 2);
 
-	/* Stack pointer. */
-	td->td_pcb->pcb_regs[PCB_REG_SP] = (register_t)_ALIGN(td->td_frame - 1);
+	/* Stack pointer. Should be double-word aligned due to EABI */
+	td->td_pcb->pcb_regs[PCB_REG_SP] = 
+	    (register_t)((uint32_t)(td->td_frame - 1) & ~7);
 }
 
 void