Thu Feb 24 15:25:07 2011 UTC ()
Fix comment mangled in rev 1.142 back in 2002.


(tsutsui)
diff -r1.177 -r1.178 src/sys/arch/mips/mips/locore.S
cvs diff -r1.177 -r1.178 src/sys/arch/mips/mips/locore.S (expand / switch to unified diff)

--- src/sys/arch/mips/mips/locore.S 2011/02/20 16:58:33 1.177
+++ src/sys/arch/mips/mips/locore.S 2011/02/24 15:25:07 1.178
@@ -1,14 +1,14 @@ @@ -1,14 +1,14 @@
1/* $NetBSD: locore.S,v 1.177 2011/02/20 16:58:33 matt Exp $ */ 1/* $NetBSD: locore.S,v 1.178 2011/02/24 15:25:07 tsutsui Exp $ */
2 2
3/* 3/*
4 * Copyright (c) 1992, 1993 4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved. 5 * The Regents of the University of California. All rights reserved.
6 * 6 *
7 * This code is derived from software contributed to Berkeley by 7 * This code is derived from software contributed to Berkeley by
8 * Digital Equipment Corporation and Ralph Campbell. 8 * Digital Equipment Corporation and Ralph Campbell.
9 * 9 *
10 * Redistribution and use in source and binary forms, with or without 10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions 11 * modification, are permitted provided that the following conditions
12 * are met: 12 * are met:
13 * 1. Redistributions of source code must retain the above copyright 13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer. 14 * notice, this list of conditions and the following disclaimer.
@@ -611,33 +611,31 @@ XNESTED(mips_fpu_trap) @@ -611,33 +611,31 @@ XNESTED(mips_fpu_trap)
611 611
612 REG_PROLOGUE 612 REG_PROLOGUE
613 REG_L a2, TF_REG_CAUSE(a1) 613 REG_L a2, TF_REG_CAUSE(a1)
614 REG_EPILOGUE 614 REG_EPILOGUE
615 615
616 cfc1 t0, MIPS_FPU_CSR # stall til FP done 616 cfc1 t0, MIPS_FPU_CSR # stall til FP done
617 cfc1 t0, MIPS_FPU_CSR # now get status 617 cfc1 t0, MIPS_FPU_CSR # now get status
618 nop 618 nop
619 sll t2, t0, (31 - 17) # unimplemented operation? 619 sll t2, t0, (31 - 17) # unimplemented operation?
620 bgez t2, 3f # no, normal trap 620 bgez t2, 3f # no, normal trap
621 nop 621 nop
622 622
623/* 623/*
624 * We got an unimplemented operation trap so 624 * We received an unimplemented operation trap so
625 * We received an unimplemented operation trap. 625 * fetch the instruction and emulate the instruction.
626 * 626 *
627 * We check whether it's an unimplemented FP instruction here rather 627 * We check whether it's an unimplemented FP instruction here rather
628 * than invoking MachEmulateInst(), since it is faster. 628 * than invoking MachEmulateInst(), since it is faster.
629 * 
630 * fetch the instruction and emulate the instruction. 
631 */ 629 */
632 bgez a2, 1f # Check the branch delay bit. 630 bgez a2, 1f # Check the branch delay bit.
633 nop 631 nop
634/* 632/*
635 * The instruction is in the branch delay slot. 633 * The instruction is in the branch delay slot.
636 */ 634 */
637 b 2f 635 b 2f
638 INT_L a0, 4(a0) # a0 = coproc instruction 636 INT_L a0, 4(a0) # a0 = coproc instruction
639/* 637/*
640 * This is not in the branch delay slot so calculate the resulting 638 * This is not in the branch delay slot so calculate the resulting
641 * PC (epc + 4) into v0 and continue to MachEmulateFP(). 639 * PC (epc + 4) into v0 and continue to MachEmulateFP().
642 */ 640 */
6431: 6411: