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URL https://opencores.org/ocsvn/eco32/eco32/trunk

Subversion Repositories eco32

Compare Revisions

  • This comparison shows the changes necessary to convert path 
    /eco32/tags/eco32-0.23/stdalone/twotasks-2/task2
    from Rev 18 to Rev 157
    ↔ Reverse comparison
  •

Rev 18 → Rev 157

/c0.s
0,0 → 1,30
;
; c0.s -- startup code and begin-of-segment labels
;
 
.import main
 
.export _bcode
.export _bdata
.export _bbss
 
.import _ecode
.import _edata
.import _ebss
 
.code
_bcode:
 
.data
_bdata:
 
.bss
_bbss:
 
.code
.align 4
 
start:
jal main ; call 'main' function
stop:
j stop ; just to be sure...
/c1.s
0,0 → 1,19
;
; c1.s -- end-of-segment labels
;
 
.export _ecode
.export _edata
.export _ebss
 
.code
.align 4
_ecode:
 
.data
.align 4
_edata:
 
.bss
.align 4
_ebss:
/task2.c
0,0 → 1,95
/*
* task2.c -- a simple task
*/
 
 
#include "putchar.h"
#include "stdarg.h"
 
 
/**************************************************************/
 
 
void puts(char *s) {
char c;
 
while ((c = *s++) != '\0') {
putchar(c);
}
}
 
 
void printn(int n) {
int a;
 
if (n < 0) {
putchar('-');
n = -n;
}
a = n / 10;
if (a != 0) {
printn(a);
}
putchar(n % 10 + '0');
}
 
 
void printu(unsigned int n, unsigned int b) {
unsigned int a;
 
a = n / b;
if (a != 0) {
printu(a, b);
}
putchar("0123456789ABCDEF"[n % b]);
}
 
 
void printf(char *fmt, ...) {
va_list ap;
char c;
int n;
unsigned int u;
char *s;
 
va_start(ap, fmt);
while (1) {
while ((c = *fmt++) != '%') {
if (c == '\0') {
va_end(ap);
return;
}
putchar(c);
}
c = *fmt++;
if (c == 'd') {
n = va_arg(ap, int);
printn(n);
} else
if (c == 'u' || c == 'o' || c == 'x') {
u = va_arg(ap, int);
printu(u, c == 'o' ? 8 : (c == 'x' ? 16 : 10));
} else
if (c == 's') {
s = va_arg(ap, char *);
puts(s);
} else {
putchar(c);
}
}
}
 
 
/**************************************************************/
 
 
void main(void) {
int i;
 
printf("TASK2: executing...\n");
i = 0;
while (1) {
printf("TASK2: %d\n", i);
i++;
}
}
/putchar.s
0,0 → 1,10
;
; putchar.s -- putchar library function
;
 
.code
.export putchar
 
putchar:
trap
jr $31
/stdarg.h
0,0 → 1,41
/*
* stdarg.h -- variable argument lists
*/
 
 
#ifndef _STDARG_H_
#define _STDARG_H_
 
 
typedef char *va_list;
 
 
static float __va_arg_tmp;
 
 
#define va_start(list, start) \
((void)((list) = (sizeof(start)<4 ? \
(char *)((int *)&(start)+1) : (char *)(&(start)+1))))
 
#define __va_arg(list, mode, n) \
(__typecode(mode)==1 && sizeof(mode)==4 ? \
(__va_arg_tmp = *(double *)(&(list += \
((sizeof(double)+n)&~n))[-(int)((sizeof(double)+n)&~n)]), \
*(mode *)&__va_arg_tmp) : \
*(mode *)(&(list += \
((sizeof(mode)+n)&~n))[-(int)((sizeof(mode)+n)&~n)]))
 
#define _bigendian_va_arg(list, mode, n) \
(sizeof(mode)==1 ? *(mode *)(&(list += 4)[-1]) : \
sizeof(mode)==2 ? *(mode *)(&(list += 4)[-2]) : \
__va_arg(list, mode, n))
 
#define va_end(list) ((void)0)
 
#define va_arg(list, mode) \
(sizeof(mode)==8 ? \
*(mode *)(&(list = (char*)(((int)list + 15)&~7U))[-8]) : \
_bigendian_va_arg(list, mode, 3U))
 
 
#endif /* _STDARG_H_ */
/putchar.h
0,0 → 1,13
/*
* putchar.h -- putchar library function
*/
 
 
#ifndef _PUTCHAR_H_
#define _PUTCHAR_H_
 
 
void putchar(char c);
 
 
#endif /* _PUTCHAR_H_ */
/Makefile
0,0 → 1,21
BUILD = ../../../build
 
all: task2
 
task2: c0.o task2.o putchar.o c1.o
$(BUILD)/bin/ld -o task2 c0.o task2.o putchar.o c1.o
 
c0.o: c0.s
$(BUILD)/bin/as -o c0.o c0.s
 
task2.o: task2.c
$(BUILD)/bin/lcc -A -c -o task2.o task2.c
 
putchar.o: putchar.s
$(BUILD)/bin/as -o putchar.o putchar.s
 
c1.o: c1.s
$(BUILD)/bin/as -o c1.o c1.s
 
clean:
rm -f *~ c0.o task2.o putchar.o c1.o task2

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