X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fia32%2Fia32_architecture.c;h=2ffda784695a4978ef011716482113a95af91704;hb=09913c6466bf204f32f0fe00961011e2ba952157;hp=78bca5a3b25ab93cfa62f74f9960e088ab74d44f;hpb=225580e8d7eabc0488b2ac4437cd34ec65cc93d6;p=libfirm

diff --git a/ir/be/ia32/ia32_architecture.c b/ir/be/ia32/ia32_architecture.c
index 78bca5a3b..2ffda7846 100644
--- a/ir/be/ia32/ia32_architecture.c
+++ b/ir/be/ia32/ia32_architecture.c
@@ -740,12 +740,25 @@ typedef union {
 static void x86_cpuid(cpuid_registers *regs, unsigned level)
 {
 #if defined(__GNUC__)
+#	if defined(__PIC__) && !defined(__amd64) // GCC cannot handle EBX in PIC
+	__asm (
+		"pushl %%ebx\n\t"
+		"cpuid\n\t"
+		"movl %%ebx, %1\n\t"
+		"popl %%ebx"
+	: "=a" (regs->r.eax), "=r" (regs->r.ebx), "=c" (regs->r.ecx), "=d" (regs->r.edx)
+	: "a" (level)
+	);
+#	else
 	__asm ("cpuid\n\t"
 	: "=a" (regs->r.eax), "=b" (regs->r.ebx), "=c" (regs->r.ecx), "=d" (regs->r.edx)
 	: "a" (level)
 	);
+#	endif
 #elif defined(_MSC_VER)
 	__cpuid(regs->bulk, level);
+#else
+#	error CPUID is missing
 #endif
 }