1 files changed, 72 insertions, 0 deletions
diff --git a/linux-user/uname.c b/linux-user/uname.c
new file mode 100644
index 0000000000..26e90e5792
--- /dev/null
+++ b/linux-user/uname.c
@@ -0,0 +1,72 @@
+/*
+ *  cpu to uname machine name map
+ *
+ *  Copyright (c) 2009 Loïc Minier
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+
+#include "qemu.h"
+//#include "qemu-common.h"
+#include "uname.h"
+
+/* return highest utsname machine name for emulated instruction set
+ *
+ * NB: the default emulated CPU ("any") might not match any existing CPU, e.g.
+ * on ARM it has all features turned on, so there is no perfect arch string to
+ * return here */
+const char *cpu_to_uname_machine(void *cpu_env)
+{
+#if defined(TARGET_ARM) && !defined(TARGET_AARCH64)
+
+    /* utsname machine name on linux arm is CPU arch name + endianness, e.g.
+     * armv7l; to get a list of CPU arch names from the linux source, use:
+     *     grep arch_name: -A1 linux/arch/arm/mm/proc-*.S
+     * see arch/arm/kernel/setup.c: setup_processor()
+     */
+
+    /* in theory, endianness is configurable on some ARM CPUs, but this isn't
+     * used in user mode emulation */
+#ifdef TARGET_WORDS_BIGENDIAN
+#define utsname_suffix "b"
+#else
+#define utsname_suffix "l"
+#endif
+    if (arm_feature(cpu_env, ARM_FEATURE_V7))
+        return "armv7" utsname_suffix;
+    if (arm_feature(cpu_env, ARM_FEATURE_V6))
+        return "armv6" utsname_suffix;
+    /* earliest emulated CPU is ARMv5TE; qemu can emulate the 1026, but not its
+     * Jazelle support */
+    return "armv5te" utsname_suffix;
+#elif defined(TARGET_X86_64)
+    return "x86-64";
+#elif defined(TARGET_I386)
+    /* see arch/x86/kernel/cpu/bugs.c: check_bugs(), 386, 486, 586, 686 */
+    CPUState *cpu = ENV_GET_CPU((CPUX86State *)cpu_env);
+    int family = object_property_get_int(OBJECT(cpu), "family", NULL);
+    if (family == 4) {
+        return "i486";
+    }
+    if (family == 5) {
+        return "i586";
+    }
+    return "i686";
+#else
+    /* default is #define-d in each arch/ subdir */
+    return UNAME_MACHINE;
+#endif
+}