Add basic syscall logic for i486 and AVR32

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3437 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 138 insertions, 0 deletions

diff --git a/nuttx/arch/avr/include/avr32/syscall.h b/nuttx/arch/avr/include/avr32/syscall.h
new file mode 100644
index 000000000..2fb43dde4
--- /dev/null
+++ b/nuttx/arch/avr/include/avr32/syscall.h
@@ -0,0 +1,138 @@
+/****************************************************************************
+ * arch/avr/include/avr32/syscall.h
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* This file should never be included directed but, rather, only indirectly
+ * through include/syscall.h or include/sys/sycall.h
+ */
+
+#ifndef __ARCH_AVR_INCLUDE_AVR32_SYSCALL_H
+#define __ARCH_AVR_INCLUDE_AVR32_SYSCALL_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <stdint.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+#define SYS_syscall 0x80
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/* SWI with SYS_ call number and six parameters */
+
+EXTERN uintptr_t sys_call6(unsigned int nbr, uintptr_t parm1,
+                           uintptr_t parm2, uintptr_t parm3,
+                           uintptr_t parm4, uintptr_t parm5,
+                           uintptr_t parm6);
+
+/* SWI with SYS_ call number and no parameters */
+
+static inline uintptr_t sys_call0(unsigned int nbr)
+{
+  return sys_call6(nbr, 0, 0, 0, 0, 0, 0);
+}
+
+/* SWI with SYS_ call number and one parameter */
+
+static inline uintptr_t sys_call1(unsigned int nbr, uintptr_t parm1)
+{
+  return sys_call6(nbr, parm1, 0, 0, 0, 0, 0);
+}
+
+/* SWI with SYS_ call number and two parameters */
+
+static inline uintptr_t sys_call2(unsigned int nbr, uintptr_t parm1,
+                                  uintptr_t parm2)
+{
+  return sys_call6(nbr, parm1, parm2, 0, 0, 0, 0);
+}
+
+/* SWI with SYS_ call number and three parameters */
+
+static inline uintptr_t sys_call3(unsigned int nbr, uintptr_t parm1,
+                                  uintptr_t parm2, uintptr_t parm3)
+{
+  return sys_call6(nbr, parm1, parm2, parm3, 0, 0, 0);
+}
+
+/* SWI with SYS_ call number and four parameters */
+
+static inline uintptr_t sys_call4(unsigned int nbr, uintptr_t parm1,
+                                  uintptr_t parm2, uintptr_t parm3,
+                                  uintptr_t parm4)
+{
+  return sys_call6(nbr, parm1, parm2, parm3, parm4, 0, 0);
+}
+
+/* SWI with SYS_ call number and five parameters */
+
+static inline uintptr_t sys_call5(unsigned int nbr, uintptr_t parm1,
+                                  uintptr_t parm2, uintptr_t parm3,
+                                  uintptr_t parm4, uintptr_t parm5)
+{
+  return sys_call6(nbr, parm1, parm2, parm3, parm4, parm5, 0);
+}
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+#endif
+
+#endif /* __ARCH_AVR_INCLUDE_AVR32_SYSCALL_H */
+