Am 10.02.2003 23:01:47, schrieb "Thomas W. Carley" <[email protected]>: > Hello … I am new to msp430 gcc port. I would like to know what registers are > pushed onto the stack on interrupt when the “interrupt” keyword is used. > Obviously the SP and SR are pushed, but are R4-R15 also?
that (and the reti) is the whole point of it. the registers are saved only if required (not all by default) >I could not find > enough information in the documentation. maybe not obvious to find, but its there: "Every function call starts from function prologue. In the prologue passes call used registers (r4-r11 and r4-r15 for interrupt functions) on stack. Then stack pointer being adjusted by subtracting frame size from r1. Naked functions does not issue prologue. 'interrupt' attribute forces to save all function used registers." line 1075 and below: "A.3 Calls definitions". in msp430-libc/doc/doc.txt chris
