1 files changed, 58 insertions, 0 deletions
diff --git a/libgloss/sparc_leon/asm-leon/contextswitch.h b/libgloss/sparc_leon/asm-leon/contextswitch.h
new file mode 100644
index 000000000..8150ac8b6
--- /dev/null
+++ b/libgloss/sparc_leon/asm-leon/contextswitch.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2011 Aeroflex Gaisler
+ *
+ * BSD license:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+#ifndef H_LEONBARE_CONTEXTSWITCH_H
+#define H_LEONBARE_CONTEXTSWITCH_H
+
+
+/*
+ * for this version, the index of THREAD_JB_SP must be even !!!
+ * This way, we can speed up the context switch (using std).
+ */
+#define THREAD_JB_SP     0	/* aligned */
+#define THREAD_JB_PC     1
+#define THREAD_JB_SVMASK 3
+#define THREAD_JB_MASK   4
+#define THREAD_JB_FP     5
+#define THREAD_JB_I7     6
+
+#define THREAD_JB_PSR    8	/* aligned */
+#define THREAD_JB_WIM    9
+
+#define THREAD_JB_FPUCTX 10
+
+#ifndef __ASSEMBLER__
+
+extern unsigned long fpustate_current;
+
+typedef int threadctx_t[14 + 2] __attribute__ ((aligned (8)));
+
+int thread_setjmp (threadctx_t env, int val);
+void thread_longjmp (threadctx_t env, int val);
+void _switch_to (threadctx_t env, int val);
+
+#endif /* __ASSEMBLER__ */
+
+#endif