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From: Oleksandr Tymoshenko <gonzo@FreeBSD.org>
To: Perforce Change Reviews <perforce@FreeBSD.org>
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Subject: PERFORCE change 110629 for review
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http://perforce.freebsd.org/chv.cgi?CH=110629

Change 110629 by gonzo@gonzo_jeevse on 2006/11/28 19:11:53

	o Set v0, v1 and a3 registers of new thread in cpu_fork
	    to proper results of fork syscall.

Affected files ...

.. //depot/projects/mips2/src/sys/mips/mips/vm_machdep.c#10 edit

Differences ...

==== //depot/projects/mips2/src/sys/mips/mips/vm_machdep.c#10 (text+ko) ====

@@ -100,6 +100,16 @@
        	 */
 	td2->td_pcb->pcb_regs[PCB_REG_SP] = sp;
 
+	/* 
+	 * Return values for fork syscall for child:
+	 *     v0 == 0 -> actual return value
+	 *     v1 == 1 -> it's a child
+	 *     a3 == 0 -> no error
+	 */	 
+	td2->td_frame->tf_regs[TF_V0] = 0;
+	td2->td_frame->tf_regs[TF_V1] = 1;
+	td2->td_frame->tf_regs[TF_A3] = 0;
+
 	/* Setup to release sched_lock in fork_exit(). */
 	td2->td_md.md_spinlock_count = 1;
 	td2->td_md.md_saved_sr = td2->td_pcb->pcb_regs[PCB_REG_SR];