From 9d3dd1fbba6b9c1dff1f1b6699cb0b293857ed74 Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Tue, 29 Mar 2011 00:07:02 +0000
Subject: Moving toward system call infrastructure

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3435 42af7a65-404d-4744-a932-0658087f49c3
---
 nuttx/arch/arm/include/arm/irq.h      | 47 +++++++++++++++++++++++++---
 nuttx/arch/arm/include/cortexm3/irq.h | 58 +++++++++++++++++++++++++++++++++--
 2 files changed, 99 insertions(+), 6 deletions(-)

(limited to 'nuttx/arch/arm/include')

diff --git a/nuttx/arch/arm/include/arm/irq.h b/nuttx/arch/arm/include/arm/irq.h
index 65ccd1356..befc1218b 100644
--- a/nuttx/arch/arm/include/arm/irq.h
+++ b/nuttx/arch/arm/include/arm/irq.h
@@ -1,7 +1,7 @@
 /****************************************************************************
  * arch/arm/include/arm/irq.h
  *
- *   Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2009-2011 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -204,8 +204,46 @@ static inline void irqrestore(irqstate_t flags)
      : "memory");
 }
 
-static inline void system_call(swint_t func, int parm1,
-			       int parm2, int parm3)
+static inline void system_call0(unsigned int nbr)
+{
+  __asm__ __volatile__
+    (
+     "mov\tr0,%0\n\t"
+     "swi\t0x900001\n\t"
+     :
+     : "r" ((long)(nbr))
+     : "r0", "lr");
+}
+
+static inline void system_call1(unsigned int nbr, uintptr_t parm1)
+{
+  __asm__ __volatile__
+    (
+     "mov\tr0,%0\n\t"
+     "mov\tr1,%1\n\t"
+     "swi\t0x900001\n\t"
+     :
+     : "r" ((long)(nbr)),  "r" ((long)(parm1))
+     : "r0", "r1", "lr");
+}
+
+static inline void system_call2(unsigned int nbr, uintptr_t parm1,
+			                    uintptr_t parm2)
+{
+  __asm__ __volatile__
+    (
+     "mov\tr0,%0\n\t"
+     "mov\tr1,%1\n\t"
+     "mov\tr2,%2\n\t"
+     "swi\t0x900001\n\t"
+     :
+     : "r" ((long)(nbr)),  "r" ((long)(parm1)),
+       "r" ((long)(parm2))
+     : "r0", "r1", "r2", "lr");
+}
+
+static inline void system_call3(unsigned int nbr, uintptr_t parm1,
+			                    uintptr_t parm2, uintptr_t parm3)
 {
   __asm__ __volatile__
     (
@@ -215,10 +253,11 @@ static inline void system_call(swint_t func, int parm1,
      "mov\tr3,%3\n\t"
      "swi\t0x900001\n\t"
      :
-     : "r" ((long)(func)),  "r" ((long)(parm1)),
+     : "r" ((long)(nbr)),  "r" ((long)(parm1)),
        "r" ((long)(parm2)), "r" ((long)(parm3))
      : "r0", "r1", "r2", "r3", "lr");
 }
+
 #endif /* __ASSEMBLY__ */
 
 /****************************************************************************
diff --git a/nuttx/arch/arm/include/cortexm3/irq.h b/nuttx/arch/arm/include/cortexm3/irq.h
index 3f731385b..f57c1dc33 100644
--- a/nuttx/arch/arm/include/cortexm3/irq.h
+++ b/nuttx/arch/arm/include/cortexm3/irq.h
@@ -1,7 +1,7 @@
 /****************************************************************************
  * arch/arm/include/cortexm3/irq.h
  *
- *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2009, 2011 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -49,7 +49,6 @@
 #  include <stdint.h>
 #endif
 
-
 /****************************************************************************
  * Definitions
  ****************************************************************************/
@@ -281,6 +280,61 @@ static inline void svcall(uint32_t cmd, uint32_t arg)
       : "r" (cmd), "r" (arg)
       : "memory");
 }
+
+static inline void system_call0(unsigned int nbr)
+{
+  __asm__ __volatile__
+    (
+      "mov\tr0,%0\n\t"
+      "\tsvc  0\n"
+      :
+      : "r" ((long)(nbr))
+      : "r0", "lr");
+}
+
+static inline void system_call1(unsigned int nbr, uintptr_t parm1)
+{
+  __asm__ __volatile__
+    (
+      "mov\tr0,%0\n\t"
+      "mov\tr1,%1\n\t"
+      "\tsvc  0\n"
+      :
+      : "r" ((long)(nbr)), "r" ((long)(parm1))
+      : "r0", "r1", "lr");
+}
+
+static inline void system_call2(unsigned int nbr, uintptr_t parm1,
+			                    uintptr_t parm2)
+{
+  __asm__ __volatile__
+    (
+      "mov\tr0,%0\n\t"
+      "mov\tr1,%1\n\t"
+      "mov\tr2,%2\n\t"
+      "\tsvc  0\n"
+      :
+      : "r" ((long)(nbr)), "r" ((long)(parm1)),
+       "r" ((long)(parm2))
+      : "r0", "r1", "r2", "lr");
+}
+
+static inline void system_call3(unsigned int nbr, uintptr_t parm1,
+			                    uintptr_t parm2, uintptr_t parm3)
+{
+  __asm__ __volatile__
+    (
+      "mov\tr0,%0\n\t"
+      "mov\tr1,%1\n\t"
+      "mov\tr2,%2\n\t"
+      "mov\tr3,%3\n\t"
+      "\tsvc  0\n"
+      :
+      : "r" ((long)(nbr)),  "r" ((long)(parm1)),
+        "r" ((long)(parm2)), "r" ((long)(parm3))
+      : "r0", "r1", "r2", "r3", "lr");
+}
+
 #endif /* __ASSEMBLY__ */
 
 /****************************************************************************
-- 
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