Fixes for Z80 compile

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2240 42af7a65-404d-4744-a932-0658087f49c3

configs/xtrs/README.txt

@@ -98,3 +98,29 @@ Then make the SDCC binaries
 and install SDCC:
 
   sudo make install
+
+SDCC Update
+^^^^^^^^^^^
+
+I have had some problems building sdcc-2.6.0 on my current UBUNTU
+release (9.10).  I had other problems building sdcc-2.9.0 on UBUNTU 9.10.
+I suspect that the newer gcc toolchains are causing problems for these
+older SDCC releases.
+
+A 20091106 snapshot did build with no major problems on UBUNTU 9.10, but
+has some compatibilty problems with the older SDCC compiler.  For one, you
+will need to change the Z80 assember name and options in the Make.defs
+files as follows:
+
+-AS			= as-z80
++AS			= sdasz80
+ 
+-	@$(AS) $(ASFLAGS) $2 $1
++	$(AS) $(ASFLAGS) $1
+
+For another, I had other problems building with that 20091106 that look
+like compiler bugs.  If you are using UBUNTU 9.10, you may have to either
+(1) downgrade your GCC compiler to a version 3.x compiler and use one of
+the older stable releases, or (2) wait for the next stable SDCC release
+after 2.9.0.
+

configs/z80sim/README.txt

@@ -73,3 +73,32 @@ Then make the SDCC binaries
 and install SDCC:
 
   sudo make install
+
+SDCC Update
+^^^^^^^^^^^
+
+I have had some problems building sdcc-2.6.0 on my current UBUNTU
+release (9.10).  I had other problems building sdcc-2.9.0 on UBUNTU 9.10.
+I suspect that the newer gcc toolchains are causing problems for these
+older SDCC releases.
+
+A 20091106 snapshot did build with no major problems on UBUNTU 9.10, but
+has some compatibilty problems with the older SDCC compiler.  For one, you
+will need to change the Z80 assember name and options in the Make.defs
+files as follows:
+
+-AS			= as-z80
++AS			= sdasz80
+ 
+-	@$(AS) $(ASFLAGS) $2 $1
++	$(AS) $(ASFLAGS) $1
+
+For another, I had other problems building with that 20091106 that look
+like compiler bugs.  If you are using UBUNTU 9.10, you may have to either
+(1) downgrade your GCC compiler to a version 3.x compiler and use one of
+the older stable releases, or (2) wait for the next stable SDCC release
+after 2.9.0.
+
+
+ 
+

include/nuttx/serial.h

@@ -142,7 +142,7 @@ struct uart_ops_s
    * the return 'status'.
    */
 
-  CODE int (*receive)(FAR struct uart_dev_s *dev, unsigned int *status);
+  CODE int (*receive)(FAR struct uart_dev_s *dev, FAR unsigned int *status);
 
   /* Call to enable or disable RX interrupts */
 

lib/lib_qsort.c

@@ -87,9 +87,9 @@
  * Private Function Prototypes
  ****************************************************************************/
 
-static inline char *med3(char *, char *, char *,
+static inline void swapfunc(char *a, char *b, int n, int swaptype);
-                           int (*)(const void *, const void *));
+static inline char *med3(char *a, char *b, char *c,
-static inline void swapfunc(char *, char *, int, int);
+                         int (*compar)(const void *, const void *));
 
 /****************************************************************************
  * Private Functions
@@ -108,7 +108,7 @@ static inline void swapfunc(char *a, char *b, int n, int swaptype)
 }
 
 static inline char *med3(char *a, char *b, char *c,
-                           int (*compar)(const void *, const void *))
+                         int (*compar)(const void *, const void *))
 {
   return compar(a, b) < 0 ?
          (compar(b, c) < 0 ? b : (compar(a, c) < 0 ? c : a ))