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about to break things

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Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross
2019-01-23 16:52:47 +13:00
parent 167201228f
commit c447457ffc
7 changed files with 659 additions and 240 deletions
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75
third_party/libbase/libc.c vendored
View File

@@ -39,4 +39,79 @@ strlen(const char *str)
for (s = str; *s; ++s)
;
return (s - str);
}
/**
* memcpy - Copies one area of memory to another
* @dest: Destination
* @src: Source
* @n: The size to copy.
*/
void *memcpy(void *to, const void *from, size_t n)
{
void *xto = to;
size_t temp;
if(!n)
return xto;
if((long)to & 1) {
char *cto = to;
const char *cfrom = from;
*cto++ = *cfrom++;
to = cto;
from = cfrom;
n--;
}
if((long)from & 1) {
char *cto = to;
const char *cfrom = from;
for (; n; n--)
*cto++ = *cfrom++;
return xto;
}
if(n > 2 && (long)to & 2) {
short *sto = to;
const short *sfrom = from;
*sto++ = *sfrom++;
to = sto;
from = sfrom;
n -= 2;
}
if((long)from & 2) {
short *sto = to;
const short *sfrom = from;
temp = n >> 1;
for (; temp; temp--)
*sto++ = *sfrom++;
to = sto;
from = sfrom;
if(n & 1) {
char *cto = to;
const char *cfrom = from;
*cto = *cfrom;
}
return xto;
}
temp = n >> 2;
if(temp) {
long *lto = to;
const long *lfrom = from;
for(; temp; temp--)
*lto++ = *lfrom++;
to = lto;
from = lfrom;
}
if(n & 2) {
short *sto = to;
const short *sfrom = from;
*sto++ = *sfrom++;
to = sto;
from = sfrom;
}
if(n & 1) {
char *cto = to;
const char *cfrom = from;
*cto = *cfrom;
}
return xto;
}

329
third_party/printf.c vendored
View File

@@ -31,215 +31,232 @@
#include "printf.h"
typedef void (*putcf) (void*,char);
typedef void (*putcf)(void *, char);
static putcf stdout_putf;
static void* stdout_putp;
static void *stdout_putp;
#ifdef PRINTF_LONG_SUPPORT
static void uli2a(unsigned long int num, unsigned int base, int uc,char * bf)
static void uli2a(unsigned long int num, unsigned int base, int uc, char *bf)
{
int n = 0;
unsigned int d = 1;
while (num / d >= base)
d *= base;
while (d != 0)
{
int n=0;
unsigned int d=1;
while (num/d >= base)
d*=base;
while (d!=0) {
int dgt = num / d;
num%=d;
d/=base;
if (n || dgt>0|| d==0) {
*bf++ = dgt+(dgt<10 ? '0' : (uc ? 'A' : 'a')-10);
num %= d;
d /= base;
if (n || dgt > 0 || d == 0)
{
*bf++ = dgt + (dgt < 10 ? '0' : (uc ? 'A' : 'a') - 10);
++n;
}
}
*bf=0;
}
*bf = 0;
}
static void li2a (long num, char * bf)
static void li2a(long num, char *bf)
{
if (num < 0)
{
if (num<0) {
num=-num;
num = -num;
*bf++ = '-';
}
uli2a(num,10,0,bf);
}
uli2a(num, 10, 0, bf);
}
#endif
static void ui2a(unsigned int num, unsigned int base, int uc,char * bf)
static void ui2a(unsigned int num, unsigned int base, int uc, char *bf)
{
int n = 0;
unsigned int d = 1;
while (num / d >= base)
d *= base;
while (d != 0)
{
int n=0;
unsigned int d=1;
while (num/d >= base)
d*=base;
while (d!=0) {
int dgt = num / d;
num%= d;
d/=base;
if (n || dgt>0 || d==0) {
*bf++ = dgt+(dgt<10 ? '0' : (uc ? 'A' : 'a')-10);
num %= d;
d /= base;
if (n || dgt > 0 || d == 0)
{
*bf++ = dgt + (dgt < 10 ? '0' : (uc ? 'A' : 'a') - 10);
++n;
}
}
*bf=0;
}
*bf = 0;
}
static void i2a (int num, char * bf)
static void i2a(int num, char *bf)
{
if (num < 0)
{
if (num<0) {
num=-num;
num = -num;
*bf++ = '-';
}
ui2a(num,10,0,bf);
}
ui2a(num, 10, 0, bf);
}
static int a2d(char ch)
{
if (ch>='0' && ch<='9')
return ch-'0';
else if (ch>='a' && ch<='f')
return ch-'a'+10;
else if (ch>='A' && ch<='F')
return ch-'A'+10;
else return -1;
}
{
if (ch >= '0' && ch <= '9')
return ch - '0';
else if (ch >= 'a' && ch <= 'f')
return ch - 'a' + 10;
else if (ch >= 'A' && ch <= 'F')
return ch - 'A' + 10;
else
return -1;
}
static char a2i(char ch, char** src,int base,int* nump)
{
char* p= *src;
int num=0;
static char a2i(char ch, char **src, int base, int *nump)
{
char *p = *src;
int num = 0;
int digit;
while ((digit=a2d(ch))>=0) {
if (digit>base) break;
num=num*base+digit;
ch=*p++;
}
*src=p;
*nump=num;
return ch;
}
static void putchw(void* putp,putcf putf,int n, char z, char* bf)
while ((digit = a2d(ch)) >= 0)
{
char fc=z? '0' : ' ';
if (digit > base)
break;
num = num * base + digit;
ch = *p++;
}
*src = p;
*nump = num;
return ch;
}
static void putchw(void *putp, putcf putf, int n, char z, char *bf)
{
char fc = z ? '0' : ' ';
char ch;
char* p=bf;
char *p = bf;
while (*p++ && n > 0)
n--;
while (n-- > 0)
putf(putp,fc);
while ((ch= *bf++))
putf(putp,ch);
}
while (n-- > 0)
putf(putp, fc);
while ((ch = *bf++))
putf(putp, ch);
}
void tfp_format(void* putp,putcf putf,char *fmt, va_list va)
{
void tfp_format(void *putp, putcf putf, char *fmt, va_list va)
{
char bf[12];
char ch;
while ((ch=*(fmt++))) {
if (ch!='%')
putf(putp,ch);
else {
char lz=0;
#ifdef PRINTF_LONG_SUPPORT
char lng=0;
while ((ch = *(fmt++)))
{
if (ch != '%')
putf(putp, ch);
else
{
char lz = 0;
#ifdef PRINTF_LONG_SUPPORT
char lng = 0;
#endif
int w=0;
ch=*(fmt++);
if (ch=='0') {
ch=*(fmt++);
lz=1;
}
if (ch>='0' && ch<='9') {
ch=a2i(ch,&fmt,10,&w);
}
#ifdef PRINTF_LONG_SUPPORT
if (ch=='l') {
ch=*(fmt++);
lng=1;
int w = 0;
ch = *(fmt++);
if (ch == '0')
{
ch = *(fmt++);
lz = 1;
}
if (ch >= '0' && ch <= '9')
{
ch = a2i(ch, &fmt, 10, &w);
}
#ifdef PRINTF_LONG_SUPPORT
if (ch == 'l')
{
ch = *(fmt++);
lng = 1;
}
#endif
switch (ch) {
case 0:
goto abort;
case 'u' : {
#ifdef PRINTF_LONG_SUPPORT
if (lng)
uli2a(va_arg(va, unsigned long int),10,0,bf);
else
switch (ch)
{
case 0:
goto abort;
case 'u':
{
#ifdef PRINTF_LONG_SUPPORT
if (lng)
uli2a(va_arg(va, unsigned long int), 10, 0, bf);
else
#endif
ui2a(va_arg(va, unsigned int),10,0,bf);
putchw(putp,putf,w,lz,bf);
break;
}
case 'd' : {
#ifdef PRINTF_LONG_SUPPORT
if (lng)
li2a(va_arg(va, unsigned long int),bf);
else
ui2a(va_arg(va, unsigned int), 10, 0, bf);
putchw(putp, putf, w, lz, bf);
break;
}
case 'd':
{
#ifdef PRINTF_LONG_SUPPORT
if (lng)
li2a(va_arg(va, unsigned long int), bf);
else
#endif
i2a(va_arg(va, int),bf);
putchw(putp,putf,w,lz,bf);
break;
}
case 'x': case 'X' :
#ifdef PRINTF_LONG_SUPPORT
if (lng)
uli2a(va_arg(va, unsigned long int),16,(ch=='X'),bf);
else
i2a(va_arg(va, int), bf);
putchw(putp, putf, w, lz, bf);
break;
}
case 'x':
case 'X':
#ifdef PRINTF_LONG_SUPPORT
if (lng)
uli2a(va_arg(va, unsigned long int), 16, (ch == 'X'), bf);
else
#endif
ui2a(va_arg(va, unsigned int),16,(ch=='X'),bf);
putchw(putp,putf,w,lz,bf);
break;
case 'c' :
putf(putp,(char)(va_arg(va, int)));
break;
case 's' :
putchw(putp,putf,w,0,va_arg(va, char*));
break;
case '%' :
putf(putp,ch);
default:
break;
}
ui2a(va_arg(va, unsigned int), 16, (ch == 'X'), bf);
putchw(putp, putf, w, lz, bf);
break;
case 'c':
putf(putp, (char)(va_arg(va, int)));
break;
case 's':
putchw(putp, putf, w, 0, va_arg(va, char *));
break;
case '%':
putf(putp, ch);
default:
break;
}
}
abort:;
}
abort:;
}
void init_printf(void* putp,void (*putf) (void*,char))
{
stdout_putf=putf;
stdout_putp=putp;
}
void init_printf(void *putp, void (*putf)(void *, char))
{
stdout_putf = putf;
stdout_putp = putp;
}
void tfp_printf(char *fmt, ...)
{
{
va_list va;
va_start(va,fmt);
tfp_format(stdout_putp,stdout_putf,fmt,va);
va_start(va, fmt);
tfp_format(stdout_putp, stdout_putf, fmt, va);
va_end(va);
}
}
static void putcp(void* p,char c)
{
*(*((char**)p))++ = c;
}
static void putcp(void *p, char c)
{
*(*((char **)p))++ = c;
}
void tfp_sprintf(char* s,char *fmt, ...)
{
void tfp_sprintf(char *s, char *fmt, ...)
{
va_list va;
va_start(va,fmt);
tfp_format(&s,putcp,fmt,va);
putcp(&s,0);
va_start(va, fmt);
tfp_format(&s, putcp, fmt, va);
putcp(&s, 0);
va_end(va);
}
}
int puts(const char *s) {
while (*s++)
stdout_putf(stdout_putp, *s);
stdout_putf(stdout_putp, '\n');
}