M68K C Interrupt Handler
Holland, Alexander MHX
HollaA@HPD.Abbott.com
Tue Jan 16 19:34:00 GMT 2001
Thanks to everyone who responded to this issue. I tried every function
attribute to generate an m68k C interrupt function or a function with no
prologue - "interrupt", "interrupt_handler", "naked", "get naked", etc. -
but none worked.
However, I thought I would relate what did work. Basically, I placed a
label after my interrupt function and made it global using inline assembly
and used this label in the vector table, e.g.
asm(".globl IrqHandler");
void DummyIrqHandler(void)
{
asm("IrqHandler:"); // Put IrqHandler in the vector table.
CPU_SAVE_REGISTERS();
// Interrupt handler specific C code goes here.
CPU_RESTORE_REGISTERS();
asm("rte");
}
Alex
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