From 1dac2263372df2b85db5d029a45721fa158a5c9d Mon Sep 17 00:00:00 2001
From: xiubuzhe <xiubuzhe@sina.com>
Date: Sun, 8 Oct 2023 20:59:00 +0800
Subject: first add files

---
 lib/greenlet/platform/switch_alpha_unix.h | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 lib/greenlet/platform/switch_alpha_unix.h

(limited to 'lib/greenlet/platform/switch_alpha_unix.h')

diff --git a/lib/greenlet/platform/switch_alpha_unix.h b/lib/greenlet/platform/switch_alpha_unix.h
new file mode 100644
index 0000000..216619f
--- /dev/null
+++ b/lib/greenlet/platform/switch_alpha_unix.h
@@ -0,0 +1,30 @@
+#define STACK_REFPLUS 1
+
+#ifdef SLP_EVAL
+#define STACK_MAGIC 0
+
+#define REGS_TO_SAVE "$9", "$10", "$11", "$12", "$13", "$14", "$15", \
+		     "$f2", "$f3", "$f4", "$f5", "$f6", "$f7", "$f8", "$f9"
+
+static int
+slp_switch(void)
+{
+  register int ret;
+  register long *stackref, stsizediff;
+  __asm__ volatile ("" : : : REGS_TO_SAVE);
+  __asm__ volatile ("mov $30, %0" : "=r" (stackref) : );
+  {
+      SLP_SAVE_STATE(stackref, stsizediff);
+      __asm__ volatile (
+	  "addq $30, %0, $30\n\t"
+	  : /* no outputs */
+	  : "r" (stsizediff)
+	  );
+      SLP_RESTORE_STATE();
+  }
+  __asm__ volatile ("" : : : REGS_TO_SAVE);
+  __asm__ volatile ("mov $31, %0" : "=r" (ret) : );
+  return ret;
+}
+
+#endif
-- 
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