From efd732b03504ee9574b1a06a27635ec7e2e0717b Mon Sep 17 00:00:00 2001
From: arigo <none@none>
Date: Mon, 14 Jan 2008 10:38:23 +0100
Subject: [PATCH] [svn r50576] This patch by Thiemo Seufer adds support for
 mips and mipsel.

--HG--
branch : trunk
---
 py/c-extension/greenlet/slp_platformselect.h |  2 +
 py/c-extension/greenlet/switch_mips_unix.h   | 56 ++++++++++++++++++++
 2 files changed, 58 insertions(+)
 create mode 100644 py/c-extension/greenlet/switch_mips_unix.h

diff --git a/py/c-extension/greenlet/slp_platformselect.h b/py/c-extension/greenlet/slp_platformselect.h
index 078087e2c..c19bb0632 100644
--- a/py/c-extension/greenlet/slp_platformselect.h
+++ b/py/c-extension/greenlet/slp_platformselect.h
@@ -18,4 +18,6 @@
 #include "switch_s390_unix.h"	/* Linux/S390 */
 #elif defined(__GNUC__) && defined(__s390x__) && defined(__linux__)
 #include "switch_s390_unix.h"	/* Linux/S390 zSeries (identical) */
+#elif defined(__GNUC__) && defined(__mips__) && defined(__linux__)
+#include "switch_mips_unix.h"	/* Linux/MIPS */
 #endif
diff --git a/py/c-extension/greenlet/switch_mips_unix.h b/py/c-extension/greenlet/switch_mips_unix.h
new file mode 100644
index 000000000..94b548917
--- /dev/null
+++ b/py/c-extension/greenlet/switch_mips_unix.h
@@ -0,0 +1,56 @@
+/*
+ * this is the internal transfer function.
+ *
+ * HISTORY
+ * 05-Jan-08 Thiemo Seufer  <ths@debian.org>
+ *      Ported from ppc.
+ */
+
+#define STACK_REFPLUS 1
+
+#ifdef SLP_EVAL
+
+#define STACK_MAGIC 0
+
+#ifdef __mips64
+#define REGS_TO_SAVE "$16", "$17", "$18", "$19", "$20", "$21", "$22", \
+       "$23", "$28", "$30"
+#else
+#define REGS_TO_SAVE "$16", "$17", "$18", "$19", "$20", "$21", "$22", \
+       "$23", "$30"
+#endif
+static int
+slp_switch(void)
+{
+    register int *stackref, stsizediff;
+    __asm__ __volatile__ ("" : : : REGS_TO_SAVE);
+    __asm__ ("move %0, $29" : "=r" (stackref) : );
+    {
+        SLP_SAVE_STATE(stackref, stsizediff);
+        __asm__ __volatile__ (
+#ifdef __mips64
+            "daddu $29, %0\n"
+#else
+            "addu $29, %0\n"
+#endif
+            : /* no outputs */
+            : "r" (stsizediff)
+            );
+        SLP_RESTORE_STATE();
+    }
+    __asm__ __volatile__ ("" : : : REGS_TO_SAVE);
+    return 0;
+}
+
+#endif
+
+/*
+ * further self-processing support
+ */
+
+/* 
+ * if you want to add self-inspection tools, place them
+ * here. See the x86_msvc for the necessary defines.
+ * These features are highly experimental und not
+ * essential yet.
+ */