From 89570c6269318b01646448810bcb28342f18ea0b Mon Sep 17 00:00:00 2001 From: Guido Guenther Date: Mon, 27 Aug 2012 12:20:25 -0400 Subject: [PATCH] mips: clear condition bit 23 in fpu too We've been carrying this in Gentoo for quite a long time to fix some test failures that people hit. Original message: > make[4]: *** [/glibc/glibc-package-2.3/mips-linux/obj/math/test-fpucw.out] Error 1 This test fails since the read back fpu control word is 0x80000 instead of 0x0. I wonder if this patch is correct: ... which additionally masks out the condition bit 23 - note that the other condition bits (25-31) are masked out too? URL: http://sourceware.org/ml/libc-alpha/2002-10/msg00392.html Signed-off-by: Mike Frysinger --- ports/ChangeLog.mips | 4 ++++ ports/sysdeps/mips/fpu_control.h | 2 +- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/ports/ChangeLog.mips b/ports/ChangeLog.mips index 2d1ca84c8a..8d919d0915 100644 --- a/ports/ChangeLog.mips +++ b/ports/ChangeLog.mips @@ -1,3 +1,7 @@ +2012-08-27 Guido Guenther + + * sysdeps/mips/fpu_control.h (_FPU_RESERVED): Set bit 23. + 2012-08-22 Joseph Myers * sysdeps/unix/sysv/linux/mips/kernel-features.h [_MIPS_SIM == diff --git a/ports/sysdeps/mips/fpu_control.h b/ports/sysdeps/mips/fpu_control.h index e9c859a4e3..7307d030ea 100644 --- a/ports/sysdeps/mips/fpu_control.h +++ b/ports/sysdeps/mips/fpu_control.h @@ -85,7 +85,7 @@ extern fpu_control_t __fpu_control; #define _FPU_RC_UP 0x2 #define _FPU_RC_DOWN 0x3 -#define _FPU_RESERVED 0xfe3c0000 /* Reserved bits in cw */ +#define _FPU_RESERVED 0xfebc0000 /* Reserved bits in cw */ /* The fdlibm code requires strict IEEE double precision arithmetic, -- 2.43.5