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/* ----------------------------------------------------------------------- *
*
* Copyright 2001-2008 H. Peter Anvin - All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, Inc., 53 Temple Place Ste 330,
* Boston MA 02111-1307, USA; either version 2 of the License, or
* (at your option) any later version; incorporated herein by reference.
*
* ----------------------------------------------------------------------- */
/*
* memdisk.h
*
* Miscellaneous header definitions
*/
#ifndef MEMDISK_H
#define MEMDISK_H
#include <stddef.h>
/* We use the com32 interface for calling 16-bit code */
#include <com32.h>
/* The real-mode segment */
#define LOW_SEG 0x0800
#define __cdecl __attribute__((cdecl,regparm(0)))
typedef void (*syscall_t)(uint8_t, com32sys_t *, com32sys_t *);
extern __cdecl syscall_t syscall;
extern void *sys_bounce;
/* What to call when we're dead */
extern void __attribute__((noreturn)) die(void);
/* Standard routines */
#define memcpy(a,b,c) __builtin_memcpy(a,b,c)
#define memset(a,b,c) __builtin_memset(a,b,c)
#define strcpy(a,b) __builtin_strcpy(a,b)
static inline size_t strlen(const char *__a)
{
const char *__D;
size_t __c;
asm("repne;scasb"
: "=D" (__D), "=c" (__c)
: "D" (__a), "c" (-1), "a" (0), "m" (*__a));
return __D - __a - 1;
}
/* memcpy() but returns a pointer to end of buffer */
static inline void *
mempcpy(void *__d, const void *__s, unsigned int __n)
{
memcpy(__d, __s, __n);
return (void *)((char *)__d + __n);
}
/* memcmp() */
static inline int
memcmp(const void *__a, const void *__b, unsigned int __n)
{
const unsigned char *__aa = __a;
const unsigned char *__bb = __b;
int __d;
while ( __n-- ) {
__d = *__bb++ - *__aa++;
if ( __d )
return __d;
}
return 0;
}
/* Decompression */
extern int check_zip(void *indata, uint32_t size, uint32_t *zbytes_p,
uint32_t *dbytes_p, uint32_t *orig_crc,
uint32_t *offset_p);
extern void *unzip(void *indata, uint32_t zbytes, uint32_t dbytes,
uint32_t orig_crc, void *target);
#endif
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