libc.h (1962B)
1 /* 2 * Copyright (c) 2013 Kevin Wolf <kwolf@redhat.com> 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a copy 5 * of this software and associated documentation files (the "Software"), to deal 6 * in the Software without restriction, including without limitation the rights 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 8 * copies of the Software, and to permit persons to whom the Software is 9 * furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 20 * THE SOFTWARE. 21 */ 22 23 #ifndef LIBC_H 24 #define LIBC_H 25 26 /* Integer types */ 27 28 typedef unsigned long long uint64_t; 29 typedef unsigned int uint32_t; 30 typedef unsigned short uint16_t; 31 typedef unsigned char uint8_t; 32 33 typedef signed long long int64_t; 34 typedef signed int int32_t; 35 typedef signed short int16_t; 36 typedef signed char int8_t; 37 38 typedef uint32_t uintptr_t; 39 40 41 /* stdarg.h */ 42 43 typedef __builtin_va_list va_list; 44 #define va_start(ap, X) __builtin_va_start(ap, X) 45 #define va_arg(ap, type) __builtin_va_arg(ap, type) 46 #define va_end(ap) __builtin_va_end(ap) 47 48 49 /* Port I/O functions */ 50 51 static inline void outb(uint16_t port, uint8_t data) 52 { 53 asm volatile ("outb %0, %1" : : "a" (data), "Nd" (port)); 54 } 55 56 57 /* Misc functions */ 58 59 void printf(const char *fmt, ...); 60 void* memcpy(void *dest, const void *src, int n); 61 62 #endif