mesa: new cpuinfo.c file to init/query cpu info and extensions

1 files changed, 109 insertions, 0 deletions

diff --git a/src/mesa/main/cpuinfo.c b/src/mesa/main/cpuinfo.c
new file mode 100644
index 00000000000..b4bfb40eb1d
--- /dev/null
+++ b/src/mesa/main/cpuinfo.c
@@ -0,0 +1,109 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.5
+ *
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include "main/imports.h"
+#include "main/cpuinfo.h"
+
+
+/**
+ * This function should be called before the various "cpu_has_foo" macros
+ * are used.
+ */
+void
+_mesa_get_cpu_features(void)
+{
+#ifdef USE_X86_ASM
+   _mesa_get_x86_features();
+#endif
+}
+
+
+/**
+ * Return a string describing the CPU architexture and extensions that
+ * Mesa is using (such as SSE or Altivec).
+ * \return information string, free it with _mesa_free()
+ */
+char *
+_mesa_get_cpu_string(void)
+{
+#define MAX_STRING 50
+   char *buffer;
+
+   buffer = (char *) _mesa_malloc(MAX_STRING);
+   if (!buffer)
+      return NULL;
+
+   buffer[0] = 0;
+
+#ifdef USE_X86_ASM
+
+   if (_mesa_x86_cpu_features) {
+      strcat(buffer, "x86");
+   }
+
+# ifdef USE_MMX_ASM
+   if (cpu_has_mmx) {
+      strcat(buffer, (cpu_has_mmxext) ? "/MMX+" : "/MMX");
+   }
+# endif
+# ifdef USE_3DNOW_ASM
+   if (cpu_has_3dnow) {
+      strcat(buffer, (cpu_has_3dnowext) ? "/3DNow!+" : "/3DNow!");
+   }
+# endif
+# ifdef USE_SSE_ASM
+   if (cpu_has_xmm) {
+      strcat(buffer, (cpu_has_xmm2) ? "/SSE2" : "/SSE");
+   }
+# endif
+
+#elif defined(USE_SPARC_ASM)
+
+   strcat(buffer, "SPARC");
+
+#elif defined(USE_PPC_ASM)
+
+   if (_mesa_ppc_cpu_features) {
+      strcat(buffer, (cpu_has_64) ? "PowerPC 64" : "PowerPC");
+   }
+
+# ifdef USE_VMX_ASM
+
+   if (cpu_has_vmx) {
+      strcat(buffer, "/Altivec");
+   }
+
+# endif
+
+   if (! cpu_has_fpu) {
+      strcat(buffer, "/No FPU");
+   }
+
+#endif
+
+   assert(_mesa_strlen(buffer) < MAX_STRING);
+
+   return buffer;
+}