1 files changed, 155 insertions, 0 deletions
diff --git a/nuttx/arch/pjrc-8051/include/irq.h b/nuttx/arch/pjrc-8051/include/irq.h
new file mode 100644
index 000000000..c0a782967
--- /dev/null
+++ b/nuttx/arch/pjrc-8051/include/irq.h
@@ -0,0 +1,155 @@
+/************************************************************
+ * irq.h
+ *
+ *   Copyright (C) 2007 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 Gregory Nutt 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 nuttx/irq.h
+ */
+
+#ifndef __ARCH_IRQ_H
+#define __ARCH_IRQ_H
+
+/************************************************************
+ * Included Files
+ ************************************************************/
+
+/************************************************************
+ * Definitions
+ ************************************************************/
+
+#define EXT_INT0_IRQ 0
+#define TIMER0_IRQ   1
+#define EXT_INT1_IRQ 2
+#define TIMER1_IRQ   3
+#define UART_IRQ     4
+#define TIMER2_IRQ   5
+
+#define NR_IRQS      6
+
+/* The stack for all tasks/threads lie at the same position
+ * in IRAM.  On context switches, the STACK contents will be
+ * copied into the TCB.
+ */
+
+#define IRAM_BASE    0x0000
+#define IRAM_SIZE    0x0100
+
+#define STACK_BASE   0x0030
+#define STACK_SIZE   (IRAM_SIZE - STACK_BASE)
+
+/* This is the form of initial stack frame
+ *
+ * This initial stack frame will be configured to hold.
+ * (1) The 16-bit return address of either:
+ *
+ *     void task_start(void);
+ *     void pthread_start(void)
+ *
+ *     The return address is stored at the top of stack.
+ *     so that the RETI instruction will work:
+ *
+ *     PC15-8 <- ((SP))
+ *     (SP)   <- (SP) -1
+ *     PC7-0  <- ((SP))
+ *     (SP)   <- (SP) -1
+ */
+
+#define FRAME_RETLS 0
+#define FRAME_RETMS 1
+
+/* Then a full context save area which can be indexed with
+ * the following definitions (relative to the beginning of
+ * the initial frame.
+ */
+
+#define FRAME_ACC   2
+#define FRAME_IE    3
+#define FRAME_DPL   4
+#define FRAME_DPH   5
+#define FRAME_B     6
+#define FRAME_R2    7
+#define FRAME_R3    8
+#define FRAME_R4    9
+#define FRAME_R5    10
+#define FRAME_R6    11
+#define FRAME_R7    12
+#define FRAME_R0    13
+#define FRAME_R1    14
+#define FRAME_PSW   15
+#define FRAME_BP    16
+
+#define FRAME_SIZE  17
+
+/************************************************************
+ * Public Types
+ ************************************************************/
+
+/* This struct defines the way the registers are stored */
+
+#ifndef __ASSEMBLY__
+struct xcptcontext
+{
+   ubyte nbytes;
+   ubyte stack[STACK_SIZE];
+};
+#endif /* __ASSEMBLY */
+
+/************************************************************
+ * Public Variables
+ ************************************************************/
+
+/************************************************************
+ * Public Function Prototypes
+ ************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+EXTERN irqstate_t irqsave(void) __naked;
+EXTERN void       irqrestore(irqstate_t flags) __naked;
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __ASSEMBLY */
+#endif /* __ARCH_IRQ_H */
+