c028e3af1b
Update to v2.4.0 OBS-URL: https://build.opensuse.org/request/show/329598 OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=271
58 lines
1.6 KiB
Diff
58 lines
1.6 KiB
Diff
From 9d108fe88813ed9b5c04f27229c335e88d1ee0b5 Mon Sep 17 00:00:00 2001
|
|
From: Alexander Graf <agraf@suse.de>
|
|
Date: Thu, 2 Feb 2012 18:02:33 +0100
|
|
Subject: [PATCH] linux-user: binfmt: support host binaries
|
|
|
|
When we have a working host binary equivalent for the guest binary we're
|
|
trying to run, let's just use that instead as it will be a lot faster.
|
|
|
|
Signed-off-by: Alexander Graf <agraf@suse.de>
|
|
---
|
|
linux-user/binfmt.c | 26 ++++++++++++++++++++++++++
|
|
1 file changed, 26 insertions(+)
|
|
|
|
diff --git a/linux-user/binfmt.c b/linux-user/binfmt.c
|
|
index cd1f513..c755edc 100644
|
|
--- a/linux-user/binfmt.c
|
|
+++ b/linux-user/binfmt.c
|
|
@@ -5,6 +5,9 @@
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
+#ifdef __x86_64__
|
|
+#define ARCH_NAME "x86_64"
|
|
+#endif
|
|
|
|
int main(int argc, char **argv, char **envp)
|
|
{
|
|
@@ -28,6 +31,29 @@ int main(int argc, char **argv, char **envp)
|
|
binfmt[0] = '\0';
|
|
/* Now argv[0] is the real qemu binary name */
|
|
|
|
+#ifdef ARCH_NAME
|
|
+ {
|
|
+ char *hostbin;
|
|
+ char *guestarch;
|
|
+ int r;
|
|
+
|
|
+ guestarch = strrchr(argv[0], '-') ;
|
|
+ if (!guestarch) {
|
|
+ goto skip;
|
|
+ }
|
|
+ guestarch++;
|
|
+ r = asprintf(&hostbin, "/emul/" ARCH_NAME "-for-%s/%s", guestarch, argv[1]);
|
|
+ if (!access(hostbin, X_OK) && (r > 0)) {
|
|
+ /*
|
|
+ * We found a host binary replacement for the non-host binary. Let's
|
|
+ * use that instead!
|
|
+ */
|
|
+ return execve(hostbin, &argv[2], envp);
|
|
+ }
|
|
+ }
|
|
+skip:
|
|
+#endif
|
|
+
|
|
new_argv = (char **)malloc((argc + 2) * sizeof(*new_argv));
|
|
if (argc > 3) {
|
|
memcpy(&new_argv[4], &argv[3], (argc - 3) * sizeof(*new_argv));
|