Sistema l'errore da me commesso in fase di conversione...

[bertos.git] / kern / switch_avr.S

diff --git a/kern/switch_avr.S b/kern/switch_avr.S
old mode 100755 (executable)
new mode 100644 (file)
index 08dfbe8..84fa14d
--- a/kern/switch_avr.S
+++ b/kern/switch_avr.S
@@ -16,10 +16,18 @@
 
 #include <avr/io.h>
 
+/*
+ * NOTE: At each change of this function affecting proc.c
+ * (i.e. arguments, data stored in the stack) bump up version
+ * number in asm_switch_version().
+ */
+
 /* void asm_switch_context(void **new_sp, void **save_sp) */
 .globl asm_switch_context
 asm_switch_context:
 
+       in      r0,SREG-__SFR_OFFSET
+       push    r0
 ;      push    r0      caller-save
 ;      push    r1      caller-save
        push    r2
@@ -98,5 +106,16 @@ asm_switch_context:
        pop     r2
 ;      pop     r1      caller-save
 ;      pop     r0      caller-save
+       pop     r0
+       out     SREG-__SFR_OFFSET,r0
+
+       ret
+
 
+/* int asm_switch_version(void) */
+.globl asm_switch_version
+asm_switch_version:
+       ldi r24,lo8(1)
+       ldi r25,hi8(1)
        ret
+