set/clear port bits with atomic instructions instead of read-modify-write, saves time+space, allows port usage in ISR

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4023 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 22 insertions, 0 deletions

diff --git a/firmware/export/sh7034.h b/firmware/export/sh7034.h
index 5dd7d96d5f..7cb48d6504 100644
--- a/firmware/export/sh7034.h
+++ b/firmware/export/sh7034.h
@@ -153,6 +153,17 @@
                         
 #define CASCR_ADDR      0x05FFFFEE
 
+/* byte halves of the ports */
+#define PADRH_ADDR      0x05FFFFC0
+#define PADRL_ADDR      0x05FFFFC1
+#define PBDRH_ADDR      0x05FFFFC2
+#define PBDRL_ADDR      0x05FFFFC3
+#define PAIORH_ADDR     0x05FFFFC4
+#define PAIORL_ADDR     0x05FFFFC5
+#define PBIORH_ADDR     0x05FFFFC6
+#define PBIORL_ADDR     0x05FFFFC7
+
+
 /* Port B data register bits */
 #define PBDR_LCD_SDA    0x0001 /* LCD serial data */
 #define PBDR_LCD_SCK    0x0002 /* LCD serial clock */
@@ -310,6 +321,17 @@
 
 #define CASCR      (*((volatile unsigned char*)CASCR_ADDR))  
 
+/* byte halves of the ports */
+#define PADRH      (*((volatile unsigned char*)PADRH_ADDR))  
+#define PADRL      (*((volatile unsigned char*)PADRL_ADDR))  
+#define PBDRH      (*((volatile unsigned char*)PBDRH_ADDR))  
+#define PBDRL      (*((volatile unsigned char*)PBDRL_ADDR))  
+#define PAIORH     (*((volatile unsigned char*)PAIORH_ADDR)) 
+#define PAIORL     (*((volatile unsigned char*)PAIORL_ADDR)) 
+#define PBIORH     (*((volatile unsigned char*)PBIORH_ADDR)) 
+#define PBIORL     (*((volatile unsigned char*)PBIORL_ADDR)) 
+
+
 /***************************************************************************
  * Register bit definitions
  **************************************************************************/