[src/trunk]: src/sys/arch/mips/mips In FPU excepton code, send SIGILL if no o...

[jeffs <jeffs%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a89891079584
branches:  trunk
changeset: 495029:a89891079584
user:      jeffs <jeffs%NetBSD.org@localhost>
date:      Wed Jul 19 22:05:02 2000 +0000

description:
In FPU excepton code, send SIGILL if no one claims the instruction.
SIGFPE is still delivered where appropriate.

diffstat:

 sys/arch/mips/mips/locore.S |  22 +++++++++++++++++++---
 1 files changed, 19 insertions(+), 3 deletions(-)

diffs (43 lines):

diff -r efc58df7c995 -r a89891079584 sys/arch/mips/mips/locore.S
--- a/sys/arch/mips/mips/locore.S       Wed Jul 19 21:08:06 2000 +0000
+++ b/sys/arch/mips/mips/locore.S       Wed Jul 19 22:05:02 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: locore.S,v 1.108 2000/07/19 18:56:36 jeffs Exp $       */
+/*     $NetBSD: locore.S,v 1.109 2000/07/19 22:05:02 jeffs Exp $       */
 
 /*
  * Copyright (c) 1992, 1993
@@ -1150,7 +1150,6 @@
 /*
  * Send a floating point exception signal to the current process.
  */
-3:
        li      t0, 0xFFFFFF00
        and     a1, a1, t0
        ori     a1, a1, T_RES_INST << MIPS_CR_EXC_CODE_SHIFT
@@ -1161,7 +1160,24 @@
        move    a2, a0                          # code = instruction
        lw      a0, _C_LABEL(curproc)           # get current process
        jal     _C_LABEL(trapsignal)
-       li      a1, SIGFPE
+       li      a1, SIGILL
+
+       b       FPReturn
+       nop
+
+/*
+ * Send a FPE signal to the current process if it tripped the any of
+ * the VZOUI bits.
+ */
+3:
+       REG_PROLOGUE
+       REG_S   a1, FRAME_CAUSE(a3)
+       REG_EPILOGUE
+
+       move    a2, a0                          # code = instruction
+       lw      a0, _C_LABEL(curproc)           # get current process
+       jal     _C_LABEL(trapsignal)
+       li      a1, SIGFPE                      # BDSLOT
 
        b       FPReturn
        nop