Nios Semaphore?

SCS,

I tried that first, but was having issues with ISR's disabling interrupts.

Anyway, I revisited disabling interrupts and tested exhaustively and seems fine now.

So Thanks!

Here are some NiosI macros if anyone is interested.

BTW, is there a doc with all the asm syntax? I'd like to assign stat as the return value.

# define get_status_reg(stat)

{

unsigned int status;

asm("rdctl %0" : "=r" (status));

stat = status;

}

# define disable_interrupts()

asm("PFX 8" );

asm("WRCTL %g0");

# define enable_interrupts()

asm("PFX 9" );

asm("WRCTL %g0");

# define interrupts_enabled(stat)

{

unsigned int status;

asm("rdctl %0" : "=r" (status));

stat = status & 0x8000;

}