mirror of
https://github.com/cc65/cc65.git
synced 2024-11-18 00:07:21 +00:00
88c6dd2da8
The fix avoids any possible problems with how cc65 will handle old-style (K & R) function declarations, in the future.
49 lines
948 B
C
49 lines
948 B
C
/*
|
|
!!DESCRIPTION!! wrapped-call pragma w/ variadic function
|
|
!!ORIGIN!! cc65 regression tests
|
|
!!LICENCE!! Public Domain
|
|
!!AUTHOR!! Lauri Kasanen
|
|
*/
|
|
|
|
#include <stdarg.h>
|
|
|
|
static unsigned char flag;
|
|
|
|
static void trampoline_set(void) {
|
|
// The Y register is used for variadics - save and restore
|
|
asm("sty tmp3");
|
|
|
|
asm("ldy tmp4");
|
|
asm("sty %v", flag);
|
|
|
|
asm("ldy tmp3");
|
|
asm("jsr callptr4");
|
|
}
|
|
|
|
#pragma wrapped-call(push, trampoline_set, 4)
|
|
unsigned adder(unsigned char num, ...);
|
|
#pragma wrapped-call(pop)
|
|
|
|
unsigned adder(unsigned char num, ...) {
|
|
|
|
unsigned char i;
|
|
unsigned sum = 0;
|
|
va_list ap;
|
|
va_start(ap, num);
|
|
|
|
for (i = 0; i < num; i++) {
|
|
sum += va_arg(ap, unsigned);
|
|
}
|
|
|
|
va_end(ap);
|
|
|
|
return sum;
|
|
}
|
|
|
|
int main() {
|
|
|
|
flag = 0;
|
|
|
|
return adder(3, 0, 5, 500) == 505 && flag == 4 ? 0 : 1;
|
|
}
|