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Add a missing "nop" in a delay slot in the floating-point exception 

handler.  Gradual underflow and fp emulation now work correctly.
Proper denorms also fix strtod() inaccuracies and Gcc's "enquire" program.
This commit is contained in:
jonathan 1995-09-28 20:02:50 +00:00
parent 5a955f3527
commit b543578236
4 changed files with 8 additions and 4 deletions
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3
sys/arch/mips/mips/locore.S
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@ -1,4 +1,4 @@
/* $NetBSD: locore.S,v 1.15 1995/09/21 23:28:31 jonathan Exp $ */ /* $NetBSD: locore.S,v 1.16 1995/09/28 20:02:50 jonathan Exp $ */
/* /*
* Copyright (c) 1992, 1993 * Copyright (c) 1992, 1993
@ -2689,6 +2689,7 @@ NON_LEAF(MachFPInterrupt, STAND_FRAME_SIZE, ra)
*/ */
srl a3, a0, MACH_OPCODE_SHIFT srl a3, a0, MACH_OPCODE_SHIFT
beq a3, MACH_OPCODE_C1, 4f # this should never fail beq a3, MACH_OPCODE_C1, 4f # this should never fail
nop
/* /*
* Send a floating point exception signal to the current process. * Send a floating point exception signal to the current process.
*/ */

3
sys/arch/mips/mips/locore_r2000.S
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@ -1,4 +1,4 @@
/* $NetBSD: locore_r2000.S,v 1.15 1995/09/21 23:28:31 jonathan Exp $ */ /* $NetBSD: locore_r2000.S,v 1.16 1995/09/28 20:02:50 jonathan Exp $ */
/* /*
* Copyright (c) 1992, 1993 * Copyright (c) 1992, 1993
@ -2689,6 +2689,7 @@ NON_LEAF(MachFPInterrupt, STAND_FRAME_SIZE, ra)
*/ */
srl a3, a0, MACH_OPCODE_SHIFT srl a3, a0, MACH_OPCODE_SHIFT
beq a3, MACH_OPCODE_C1, 4f # this should never fail beq a3, MACH_OPCODE_C1, 4f # this should never fail
nop
/* /*
* Send a floating point exception signal to the current process. * Send a floating point exception signal to the current process.
*/ */

3
sys/arch/mips/mips/locore_r4000.S
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@ -1,4 +1,4 @@
/* $NetBSD: locore_r4000.S,v 1.15 1995/09/21 23:28:31 jonathan Exp $ */ /* $NetBSD: locore_r4000.S,v 1.16 1995/09/28 20:02:50 jonathan Exp $ */
/* /*
* Copyright (c) 1992, 1993 * Copyright (c) 1992, 1993
@ -2689,6 +2689,7 @@ NON_LEAF(MachFPInterrupt, STAND_FRAME_SIZE, ra)
*/ */
srl a3, a0, MACH_OPCODE_SHIFT srl a3, a0, MACH_OPCODE_SHIFT
beq a3, MACH_OPCODE_C1, 4f # this should never fail beq a3, MACH_OPCODE_C1, 4f # this should never fail
nop
/* /*
* Send a floating point exception signal to the current process. * Send a floating point exception signal to the current process.
*/ */

3
sys/arch/pmax/pmax/locore.S
View File

@ -1,4 +1,4 @@
/* $NetBSD: locore.S,v 1.15 1995/09/21 23:28:31 jonathan Exp $ */ /* $NetBSD: locore.S,v 1.16 1995/09/28 20:02:50 jonathan Exp $ */
/* /*
* Copyright (c) 1992, 1993 * Copyright (c) 1992, 1993
@ -2689,6 +2689,7 @@ NON_LEAF(MachFPInterrupt, STAND_FRAME_SIZE, ra)
*/ */
srl a3, a0, MACH_OPCODE_SHIFT srl a3, a0, MACH_OPCODE_SHIFT
beq a3, MACH_OPCODE_C1, 4f # this should never fail beq a3, MACH_OPCODE_C1, 4f # this should never fail
nop
/* /*
* Send a floating point exception signal to the current process. * Send a floating point exception signal to the current process.
*/ */