X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=blobdiff_plain;f=tos%2Fchips%2Fatm128%2Fatm128hardware.h;h=b412d90fe1a7c74c1110d130db91151f39f1a317;hb=e9bfab607e051bae6afb47b44892ce37541d1b44;hp=cfc7eaf7f372ce17ef5c38c0dbaf1a5898878611;hpb=742710ed9accc709978cba77d81f1fb2c77cd48c;p=tinyos-2.x.git

diff --git a/tos/chips/atm128/atm128hardware.h b/tos/chips/atm128/atm128hardware.h
index cfc7eaf7..b412d90f 100644
--- a/tos/chips/atm128/atm128hardware.h
+++ b/tos/chips/atm128/atm128hardware.h
@@ -1,6 +1,6 @@
 //  $Id$
 
-/*                                                                     tab:4
+/*                                                                     
  *  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.  By
  *  downloading, copying, installing or using the software you agree to
  *  this license.  If you do not agree to this license, do not download,
@@ -79,11 +79,11 @@
 #define READ_FLAG(port, flag) ((port) & (flag))
 
 /* Enables interrupts. */
-inline void __nesc_enable_interrupt() {
+inline void __nesc_enable_interrupt() @safe() {
     sei();
 }
 /* Disables all interrupts. */
-inline void __nesc_disable_interrupt() {
+inline void __nesc_disable_interrupt() @safe() {
     cli();
 }
 
@@ -100,17 +100,19 @@ void __nesc_atomic_end(__nesc_atomic_t original_SREG);
 
 /* Saves current interrupt mask state and disables interrupts. */
 inline __nesc_atomic_t 
-__nesc_atomic_start(void) @spontaneous()
+__nesc_atomic_start(void) @spontaneous() @safe()
 {
     __nesc_atomic_t result = SREG;
     __nesc_disable_interrupt();
+    asm volatile("" : : : "memory"); /* ensure atomic section effect visibility */
     return result;
 }
 
 /* Restores interrupt mask to original state. */
 inline void 
-__nesc_atomic_end(__nesc_atomic_t original_SREG) @spontaneous()
+__nesc_atomic_end(__nesc_atomic_t original_SREG) @spontaneous() @safe()
 {
+  asm volatile("" : : : "memory"); /* ensure atomic section effect visibility */
   SREG = original_SREG;
 }
 #endif
@@ -129,10 +131,27 @@ enum {
 };
 
 /* Combine function.  */
-mcu_power_t mcombine(mcu_power_t m1, mcu_power_t m2) {
+mcu_power_t mcombine(mcu_power_t m1, mcu_power_t m2) @safe() {
   return (m1 < m2)? m1: m2;
 }
 
-#endif //_H_atmega128hardware_H
+/* Floating-point network-type support.
+   These functions must convert to/from a 32-bit big-endian integer that follows
+   the layout of Java's java.lang.float.floatToRawIntBits method.
+   Conveniently, for the AVR family, this is a straight byte copy...
+*/
+
+typedef float nx_float __attribute__((nx_base_be(afloat)));
+
+inline float __nesc_ntoh_afloat(const void *COUNT(sizeof(float)) source) @safe() {
+  float f;
+  memcpy(&f, source, sizeof(float));
+  return f;
+}
 
+inline float __nesc_hton_afloat(void *COUNT(sizeof(float)) target, float value) @safe() {
+  memcpy(target, &value, sizeof(float));
+  return value;
+}
 
+#endif //_H_atmega128hardware_H