Attachment 111431 Details for Bug 87658 – 0001-util-add-check-for-bit_FXSAVE.patch

[patch] 0001-util-add-check-for-bit_FXSAVE.patch

0001-util-add-check-for-bit_FXSAVE.patch (text/plain), 1.08 KB, created by David Heidelberg (okias) on 2014-12-28 16:55:46 UTC

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Creator: David Heidelberg (okias)

Created: 2014-12-28 16:55:46 UTC

Size: 1.08 KB

patch

obsolete

>From 8670366ae2d1399491e5a7b73d6cb2269d46ac45 Mon Sep 17 00:00:00 2001
>From: David Heidelberg <david@ixit.cz>
>Date: Sun, 28 Dec 2014 17:52:25 +0100
>Subject: [PATCH] util: add check for bit_FXSAVE
>
>This prevent segfault on CPUs without FXSAVE as
>Mobile Intel(R) Pentium(R) 4 - M.
>
>Bug: https://bugs.freedesktop.org/show_bug.cgi?id=87658
>
>Signed-off-by: David Heidelberg <david@ixit.cz>
>---
> src/gallium/auxiliary/util/u_cpu_detect.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
>diff --git a/src/gallium/auxiliary/util/u_cpu_detect.c b/src/gallium/auxiliary/util/u_cpu_detect.c
>index 5d9db59..fd98997 100644
>--- a/src/gallium/auxiliary/util/u_cpu_detect.c
>+++ b/src/gallium/auxiliary/util/u_cpu_detect.c
>@@ -375,7 +375,8 @@ util_cpu_detect(void)
>          util_cpu_caps.has_daz = 1;
> #else
>          util_cpu_caps.has_daz = util_cpu_caps.has_sse3 ||
>-            (util_cpu_caps.has_sse2 && sse2_has_daz());
>+            (util_cpu_caps.has_sse2 &&
>+             ((regs2[3] >> 24) & 1 /* bit_FXSAVE */ ) && sse2_has_daz());
> #endif
> 
>          cacheline = ((regs2[1] >> 8) & 0xFF) * 8;
>-- 
>2.2.1
>

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