initial commit of the arm port

this port assumes eabi calling conventions, eabi linux syscall
convention, and presence of the kernel helpers at 0xffff0f?0 needed
for threads support. otherwise it makes very few assumptions, and the
code should work even on armv4 without thumb support, as well as on
systems with thumb interworking. the bits headers declare this a
little endian system, but as far as i can tell the code should work
equally well on big endian.

some small details are probably broken; so far, testing has been
limited to qemu/aboriginal linux.

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/arm/pthread_arch.h b/arch/arm/pthread_arch.h
new file mode 100644
index 00000000..c6b97368
--- /dev/null
+++ b/arch/arm/pthread_arch.h
@@ -0,0 +1,7 @@
+static inline struct pthread *__pthread_self()
+{
+	return ((void *(*)(void))0xffff0fe0)();
+}
+
+#define CANCEL_REG_SP 16
+#define CANCEL_REG_IP 18