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https://github.com/cc65/cc65.git
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106 lines
2.2 KiB
C
106 lines
2.2 KiB
C
/*
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!!DESCRIPTION!! varargs test
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!!ORIGIN!!
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!!LICENCE!! public domain
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdarg.h>
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void chk0(char *format,...);
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void chk1(int fd,char *format,...);
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#if 0
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// old workaround for broken varargs
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void chk0(char *format,...){
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__asm__ ("pha"); // save argument size
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{
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//va_list ap;
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char *ap;
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char *_format;
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static char string[0x100];
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// va_start(ap,format);
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__asm__ ("pla"); // restore argument size
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__asm__ ("ldx #$00"); // clear hibyte of AX
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ap=__AX__;
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ap+=(char*)&format;
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// get value of format
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ap-=2;
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_format=*((char**)ap);
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// vsprintf(string,format,ap);
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vsprintf(&string[0],_format,ap);
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printf("format:%s,string:%s\n",_format,string);
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// va_end(ap);
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}
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}
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void chk1(int fd,char *format,...){
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__asm__ ("pha"); // save argument size
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{
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//va_list ap;
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char *ap;
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char *_format;
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int _fd;
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static char string[0x100];
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// va_start(ap,format);
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__asm__ ("pla"); // restore argument size
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__asm__ ("ldx #$00"); // clear hibyte of AX
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ap=__AX__;
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ap+=(char*)&format;
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// get value of fd
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ap-=2;
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_fd=*((int*)ap);
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// get value of format
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ap-=2;
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_format=*((char**)ap);
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// vsprintf(string,format,ap);
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vsprintf(&string[0],_format,ap);
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printf("fd:%d,format:%s,string:%s\n",_fd,_format,string);
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// va_end(ap);
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}
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}
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#endif
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void chk0(char *format,...){
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va_list ap;
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static char string[0x100];
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va_start(ap,format);
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vsprintf(string,format,ap);
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printf("format:%s,string:%s\n",format,string);
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va_end(ap);
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}
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void chk1(int fd,char *format,...){
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va_list ap;
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static char string[0x100];
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va_start(ap,format);
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vsprintf(string,format,ap);
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printf("fd:%d,format:%s,string:%s\n",fd,format,string);
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va_end(ap);
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}
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int main(int argc,char **argv) {
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printf("varargs test\n");
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printf("\nchk0/0:\n");chk0("chk0 %s","arg0");
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printf("\nchk0/1:\n");chk0("chk0 %s %s","arg0","arg1");
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printf("\nchk0/2:\n");chk0("chk0 %s %s %s","arg0","arg1","arg2");
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printf("\nchk1/0:\n");chk1(0xfd,"chk1 %s","arg0");
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printf("\nchk1/1:\n");chk1(0xfd,"chk1 %s %s","arg0","arg1");
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printf("\nchk1/2:\n");chk1(0xfd,"chk1 %s %s %s","arg0","arg1","arg2");
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return 0;
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}
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