File arm-webrtc-fix.patch of Package chromium.4656

Overview Repositories Revisions Requests Users Attributes Meta

File arm-webrtc-fix.patch of Package chromium.4656

--- third_party/webrtc/system_wrappers/source/cpu_features.cc.orig	2014-01-15 18:38:50.331954791 -0700
+++ third_party/webrtc/system_wrappers/source/cpu_features.cc	2014-01-15 18:38:37.902004379 -0700
@@ -18,6 +18,47 @@
 
 #include "webrtc/typedefs.h"
 
+#include <elf.h>
+#ifdef __arm__
+#include <fcntl.h>
+#include <unistd.h>
+#include <linux/auxvec.h>
+#include <asm/hwcap.h>
+#endif
+
+#ifdef __arm__
+uint64_t WebRtc_GetCPUFeaturesARM() {
+	static bool detected = false;
+	static uint64_t have_neon = 0;
+
+	int fd;
+	Elf32_auxv_t auxv;
+	unsigned int hwcaps;
+
+	if (!detected) {
+		int fd;
+		Elf32_auxv_t auxv;
+		unsigned int hwcaps;
+
+		fd = open("/proc/self/auxv", O_RDONLY);
+		if (fd >= 0) {
+			while (read(fd, &auxv, sizeof(Elf32_auxv_t)) == sizeof(Elf32_auxv_t)) {
+				if (auxv.a_type == AT_HWCAP) {
+					have_neon = (auxv.a_un.a_val & HWCAP_NEON) ? kCPUFeatureNEON : 0;
+					break;
+				}
+			}
+			close (fd);
+		} else {
+			have_neon = 0;
+		}
+		detected = true;
+	}
+
+	return 0 | have_neon; // others here as we need them
+}
+#endif
+
 // No CPU feature is available => straight C path.
 int GetCPUInfoNoASM(CPUFeature feature) {
   (void)feature;

Places

File arm-webrtc-fix.patch of Package chromium.4656

Places