diff options
Diffstat (limited to 'kernel/task/mcu/atmega2560/context.c')
| -rw-r--r-- | kernel/task/mcu/atmega2560/context.c | 48 |
1 files changed, 24 insertions, 24 deletions
diff --git a/kernel/task/mcu/atmega2560/context.c b/kernel/task/mcu/atmega2560/context.c index bcc2130..9bb7036 100644 --- a/kernel/task/mcu/atmega2560/context.c +++ b/kernel/task/mcu/atmega2560/context.c @@ -5,26 +5,26 @@ char* stack_init(const char* const mem_low, const char* const mem_high, void (*e unsigned long address = (unsigned long) entry; // pattern for debugging purposes - *sp = (char) 0x1; - sp--; - *sp = (char) 0x2; - sp--; - *sp = (char) 0x1; - sp--; - *sp = (char) 0x2; - sp--; + *sp = (char) 0x1; + sp--; + *sp = (char) 0x2; + sp--; + *sp = (char) 0x1; + sp--; + *sp = (char) 0x2; + sp--; - // put return address on stack - *sp = (char) ( address & (unsigned short) 0x00ff ); + // put return address on stack + *sp = (char) ( address & (unsigned short) 0x00ff ); sp--; *sp = (char) ( (address >> 8) & ( unsigned short ) 0x00ff ); sp--; - *sp = (char) ( (address >> 16) & ( unsigned short ) 0x00ff ); + *sp = (char) ( (address >> 16) & ( unsigned short ) 0x00ff ); sp--; - // save registers + // save registers *sp = (char) 0x00; //r0 sp--; *sp = (char) 0x80; //SREG, enable interrupts when task starts @@ -69,30 +69,30 @@ char* stack_init(const char* const mem_low, const char* const mem_high, void (*e sp--; *sp = ( char ) 0x00; //r20 sp--; - *sp = ( char ) 0x00; //r21 + *sp = ( char ) 0x00; //r21 sp--; - *sp = ( char ) 0x00; //r22 + *sp = ( char ) 0x00; //r22 sp--; - *sp = ( char ) 0x00; //r23 + *sp = ( char ) 0x00; //r23 sp--; - *sp = (char) ( args ); //place first argument in register 24 + *sp = (char) ( args ); //place first argument in register 24 sp--; - *sp = ( char ) 0x00; //r25 + *sp = ( char ) 0x00; //r25 sp--; - *sp = ( char ) 0x00; //r26 + *sp = ( char ) 0x00; //r26 sp--; - *sp = ( char ) 0x00; //r27 + *sp = ( char ) 0x00; //r27 sp--; - *sp = ( char ) 0x00; //r28 + *sp = ( char ) 0x00; //r28 sp--; - *sp = ( char ) 0x00; //r29 + *sp = ( char ) 0x00; //r29 sp--; - *sp = ( char ) 0x00; //r30 + *sp = ( char ) 0x00; //r30 sp--; - *sp = ( char ) 0x00; //r31 + *sp = ( char ) 0x00; //r31 sp--; - return sp; + return sp; } |