From c595dea23c6e77dc5d44a7f4b86916b72e09f970 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Jos=C3=A9=20Fonseca?= Date: Fri, 9 Oct 2009 13:22:42 +0100 Subject: [PATCH] util: Force ESI register for cpuid's ebx result. Fixes a segfault and better code. Unfortunately using an arbitrary register ("=r") causes the gcc to abort when the code is optimized saying it can't satisfy the constraint. Setting seems to do the trick. --- src/gallium/auxiliary/util/u_cpu_detect.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/gallium/auxiliary/util/u_cpu_detect.c b/src/gallium/auxiliary/util/u_cpu_detect.c index 70ce25c..ded361c 100644 --- a/src/gallium/auxiliary/util/u_cpu_detect.c +++ b/src/gallium/auxiliary/util/u_cpu_detect.c @@ -346,7 +346,7 @@ cpuid(uint32_t ax, uint32_t *p) "cpuid\n\t" "xchgl %%ebx, %1" : "=a" (p[0]), - "=m" (p[1]), + "=S" (p[1]), "=c" (p[2]), "=d" (p[3]) : "0" (ax) -- 2.7.4