ucontext_t support for Android x86.

sandbox/linux/seccomp-bpf/sandbox_bpf.cc

Index: sandbox/linux/seccomp-bpf/sandbox_bpf.cc
diff --git a/sandbox/linux/seccomp-bpf/sandbox_bpf.cc b/sandbox/linux/seccomp-bpf/sandbox_bpf.cc
index 366706f18322a791beff4ab709e75af7a9f2a3c1..2cb61fbfee2b26212fb976ebaface9bb705de300 100644
--- a/sandbox/linux/seccomp-bpf/sandbox_bpf.cc
+++ b/sandbox/linux/seccomp-bpf/sandbox_bpf.cc
@@ -18,8 +18,16 @@
 #include "sandbox/linux/seccomp-bpf/verifier.h"
 
 // Android's signal.h doesn't define ucontext etc.
-#if defined(OS_ANDROID) && defined(__arm__)
+#if defined(OS_ANDROID)

[jln (very slow on Chromium), 2013/01/08 22:26:09]

Can you move most of what's below into a global services/android_ucontext.h ?

+#if defined(__arm__)
 #include "sandbox/linux/services/android_arm_ucontext.h"
+#elif defined(__i386__)
+#include "sandbox/linux/services/android_x86_ucontext.h"
+#elif defined(__mips__)
+#error "Lack ucontext_t definition for mips on Android"

[digit1, 2013/01/09 09:47:18]

If you need a MIPS version, please see
https://android-review.googlesource.com/#/c/38875/4/libc/arch-mips/include/ma...

(this patch was later reverted because it broke something in the internal tree,
but I plan to revive it some time in the future).

+#else
+#error "Unsupported CPU ABI for Android"
+#endif
 #endif
 
 namespace {