Module Name: src
Committed By: rin
Date: Fri Sep 2 12:47:10 UTC 2022
Modified Files:
src/sys/arch/powerpc/fpu: fpu_emu.c
Log Message:
Fix fres and frsqrte.
- Pass correct fp to succeeding fpu_implode().
- fres calculates 1 / frB; not 1 / sqrt(frB).
To generate a diff of this commit:
cvs rdiff -u -r1.45 -r1.46 src/sys/arch/powerpc/fpu/fpu_emu.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/powerpc/fpu/fpu_emu.c
diff -u src/sys/arch/powerpc/fpu/fpu_emu.c:1.45 src/sys/arch/powerpc/fpu/fpu_emu.c:1.46
--- src/sys/arch/powerpc/fpu/fpu_emu.c:1.45 Fri Sep 2 12:40:49 2022
+++ src/sys/arch/powerpc/fpu/fpu_emu.c Fri Sep 2 12:47:10 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: fpu_emu.c,v 1.45 2022/09/02 12:40:49 rin Exp $ */
+/* $NetBSD: fpu_emu.c,v 1.46 2022/09/02 12:47:10 rin Exp $ */
/*
* Copyright 2001 Wasabi Systems, Inc.
@@ -76,7 +76,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: fpu_emu.c,v 1.45 2022/09/02 12:40:49 rin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: fpu_emu.c,v 1.46 2022/09/02 12:47:10 rin Exp $");
#ifdef _KERNEL_OPT
#include "opt_ddb.h"
@@ -690,10 +690,9 @@ fpu_execute(struct trapframe *tf, struct
case OPC59_FRES:
FPU_EMU_EVCNT_INCR(fpres);
DPRINTF(FPE_INSN, ("fpu_execute: FPRES\n"));
- fpu_explode(fe, &fe->fe_f2, type, FR(rb));
- fp = fpu_sqrt(fe);
fpu_explode(fe, &fe->fe_f1, FTYPE_INT, 1);
- fpu_div(fe);
+ fpu_explode(fe, &fe->fe_f2, type, FR(rb));
+ fp = fpu_div(fe);
break;
case OPC59_FMULS:
FPU_EMU_EVCNT_INCR(fmul);
@@ -710,7 +709,7 @@ fpu_execute(struct trapframe *tf, struct
fp = fpu_sqrt(fe);
fe->fe_f2 = *fp;
fpu_explode(fe, &fe->fe_f1, FTYPE_INT, 1);
- fpu_div(fe);
+ fp = fpu_div(fe);
break;
case OPC59_FMSUBS:
FPU_EMU_EVCNT_INCR(fmulsub);
