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> compile NEMU

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221220000 张三
Linux zzy 5.15.146.1-microsoft-standard-WSL2 #1 SMP Thu Jan 11 04:09:03 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
 13:40:34 up  2:05,  1 user,  load average: 0.31, 0.17, 0.07
This commit is contained in:
tracer-ics2023
2024-09-05 13:40:34 +08:00
committed by zzy
parent 820402948a
commit a2ed2452e1
2 changed files with 29 additions and 10 deletions
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28
abstract-machine/klib/src/stdio.c
View File

@ -1,3 +1,7 @@
#include <stddef.h>
#include <stdbool.h>
#include <stdint.h>
#include <am.h>
#include <klib.h>
#include <klib-macros.h>
@ -42,16 +46,32 @@ int vsnprintf(char *out, size_t n, const char *fmt, va_list ap) {
}
static int rvsnprintf(char* out, size_t n, const char* fmt, va_list ap) {
while (n) {
bool is_fmt;
for (is_fmt = false; *fmt && n; fmt ++, *out ++, n --) {
switch (*fmt)
{
case '%':
is_fmt = true;
break;
case 'd':
if (is_fmt) {
int va = va_arg(ap, int);
for (; va; va /= 10) {
*out = va % 10 + '0';
n --;
out ++;
}
}
break;
case 's':
if (is_fmt) {
const char* va = va_arg(ap, const char*);
size_t len = strlen(va);
strncpy(out, va, len);
n += len;
}
default:
*out = *fmt;
out ++;
fmt ++;
n --;
break;
}
}

11
abstract-machine/klib/src/string.c
View File

@ -58,12 +58,11 @@ void *memset(void *s, int c, size_t n) {
}
void *memmove(void *dst, const void *src, size_t n) {
unsigned char* _dst = (unsigned char*)dst;
const unsigned char* _src = (const unsigned char*)src;
const unsigned char* _dst_end = _dst + n;
const unsigned char* _src_end = _src + n;
if (_src < _dst_end && _src + n > _dst) {
})
// unsigned char* _dst = (unsigned char*)dst;
// const unsigned char* _src = (const unsigned char*)src;
// const unsigned char* _dst_end = _dst + n;
// const unsigned char* _src_end = _src + n;
panic("Not implemented");
}
void *memcpy(void *out, const void *in, size_t n) {