X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Fhelper%2Ftypes.h;h=04b005945939fb8925633b5762b25bc2f1442ae0;hp=c06a7ececa6880ccdd8095b9c7bce1769fbd6aff;hb=f6a3fc818bc6a24b6c5bbcc6057f72d2b0b2e2ab;hpb=00bbf24c1605e10e662f920c9b0a6ab02e6b81ee diff --git a/src/helper/types.h b/src/helper/types.h index c06a7ececa..04b0059459 100644 --- a/src/helper/types.h +++ b/src/helper/types.h @@ -2,6 +2,9 @@ * Copyright (C) 2004, 2005 by Dominic Rath * * Dominic.Rath@gmx.de * * * + * Copyright (C) 2007,2008 Øyvind Harboe * + * oyvind.harboe@zylin.com * + * * * 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; either version 2 of the License, or * @@ -19,74 +22,188 @@ ***************************************************************************/ #ifndef TYPES_H #define TYPES_H - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif -#ifndef u8 -typedef unsigned char u8; +#include +#ifdef HAVE_SYS_TYPES_H +#include #endif - -#ifndef u16 -typedef unsigned short u16; +#ifdef HAVE_STDINT_H +#include #endif - -#ifndef u32 -typedef unsigned int u32; +#ifdef HAVE_INTTYPES_H +#include #endif -#ifndef u64 -typedef unsigned long long u64; +#ifdef HAVE_STDBOOL_H +#include +#else /* HAVE_STDBOOL_H */ +#define __bool_true_false_are_defined 1 + +#ifndef HAVE__BOOL +#ifndef __cplusplus + +#define false 0 +#define true 1 + +typedef int _Bool; +#else +typedef bool _Bool; +#endif /* __cplusplus */ +#endif /* HAVE__BOOL */ + +#define bool _Bool + +#endif /* HAVE_STDBOOL_H */ + +/// turns a macro argument into a string constant +#define stringify(s) __stringify(s) +#define __stringify(s) #s + + +/** + * Compute the number of elements of a variable length array. + * + * const char *strs[] = { "a", "b", "c" }; + * unsigned num_strs = ARRAY_SIZE(strs); + * + */ +#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x))) + + +/** + * Cast a member of a structure out to the containing structure. + * @param ptr The pointer to the member. + * @param type The type of the container struct this is embedded in. + * @param member The name of the member within the struct. + * + * This is a mechanism which is used throughout the Linux kernel. + */ +#define container_of(ptr, type, member) ({ \ + const typeof( ((type *)0)->member ) *__mptr = (ptr); \ + (type *)( (void *) ( (char *)__mptr - offsetof(type,member) ) );}) + + +/** + * Rounds @c m up to the nearest multiple of @c n using division. + * @param m The value to round up to @c n. + * @param n Round @c m up to a multiple of this number. + * @returns The rounded integer value. + */ +#define DIV_ROUND_UP(m, n) (((m) + (n) - 1) / (n)) + + +/* DANGER!!!! here be dragons! + * + * Leave these fn's as byte accesses because it is safe + * across architectures. Clever usage of 32 bit access + * will create problems on some hosts. + * + * Note that the "buf" pointer in memory is probably unaligned. + * + * Were these functions to be re-written to take a 32 bit wide or 16 bit wide + * memory access shortcut, then on some CPU's, i.e. ARM7, the 2 lsbytes of the address are + * ignored for 32 bit access, whereas on other CPU's a 32 bit wide unaligned memory access + * will cause an exception, and lastly on x86, an unaligned "greater than bytewide" + * memory access works as if aligned. So what follows below will work for all + * platforms and gives the compiler leeway to do its own platform specific optimizations. + * + * Again, note that the "buf" pointer in memory is probably unaligned. + */ + + +static inline uint32_t le_to_h_u32(const uint8_t* buf) +{ + return (uint32_t)(buf[0] | buf[1] << 8 | buf[2] << 16 | buf[3] << 24); +} + +static inline uint16_t le_to_h_u16(const uint8_t* buf) +{ + return (uint16_t)(buf[0] | buf[1] << 8); +} + +static inline uint32_t be_to_h_u32(const uint8_t* buf) +{ + return (uint32_t)(buf[3] | buf[2] << 8 | buf[1] << 16 | buf[0] << 24); +} + +static inline uint16_t be_to_h_u16(const uint8_t* buf) +{ + return (uint16_t)(buf[1] | buf[0] << 8); +} + +static inline void h_u32_to_le(uint8_t* buf, int val) +{ + buf[3] = (uint8_t) (val >> 24); + buf[2] = (uint8_t) (val >> 16); + buf[1] = (uint8_t) (val >> 8); + buf[0] = (uint8_t) (val >> 0); +} + +static inline void h_u32_to_be(uint8_t* buf, int val) +{ + buf[0] = (uint8_t) (val >> 24); + buf[1] = (uint8_t) (val >> 16); + buf[2] = (uint8_t) (val >> 8); + buf[3] = (uint8_t) (val >> 0); +} + +static inline void h_u16_to_le(uint8_t* buf, int val) +{ + buf[1] = (uint8_t) (val >> 8); + buf[0] = (uint8_t) (val >> 0); +} + +static inline void h_u16_to_be(uint8_t* buf, int val) +{ + buf[0] = (uint8_t) (val >> 8); + buf[1] = (uint8_t) (val >> 0); +} + +#if defined(__ECOS) + +/* eCos plain lacks these definition... A series of upstream patches + * could probably repair it, but it seems like too much work to be + * worth it. + */ + +#if !defined(_STDINT_H) +#define PRIx32 "x" +#define PRId32 "d" +#define SCNx32 "x" +#define PRIi32 "i" +#define PRIu32 "u" +#define PRId8 PRId32 + +typedef CYG_ADDRWORD intptr_t; +typedef int64_t intmax_t; +typedef uint64_t uintmax_t; +#define INT8_MAX 0x7f +#define INT8_MIN (-INT8_MAX - 1) +# define UINT8_MAX (255) +#define INT16_MAX 0x7fff +#define INT16_MIN (-INT16_MAX - 1) +# define UINT16_MAX (65535) +#define INT32_MAX 0x7fffffffL +#define INT32_MIN (-INT32_MAX - 1L) +# define UINT32_MAX (4294967295U) +#define INT64_MAX 0x7fffffffffffffffLL +#define INT64_MIN (-INT64_MAX - 1LL) +#define UINT64_MAX (__CONCAT(INT64_MAX, U) * 2ULL + 1ULL) #endif -#ifdef WORDS_BIGENDIAN /* big endian host */ - -#define le_to_h_u32(x) (u32)((x)[0] | (x)[1] << 8 | (x)[2] << 16 | (x)[3] << 24) -#define le_to_h_u16(x) (u16)((x)[0] | (x)[1] << 8) -#define be_to_h_u32(x) (*(u32*)(x)) -#define be_to_h_u16(x) (*(u16*)(x)) - -#define h_u32_to_le(buf, val) \ - do { \ - (buf)[3] = ((val) & 0xff000000) >> 24; \ - (buf)[2] = ((val) & 0x00ff0000) >> 16; \ - (buf)[1] = ((val) & 0x0000ff00) >> 8; \ - (buf)[0] = ((val) & 0x000000ff); \ - } while (0) - -#define h_u16_to_le(buf, val) \ - do { \ - (buf)[1] = ((val) & 0xff00) >> 8; \ - (buf)[0] = ((val) & 0x00ff); \ - } while (0) - -#define h_u32_to_be(buf, val) do { *(u32*)(buf) = (val); } while (0) -#define h_u16_to_be(buf, val) do { *(u16*)(buf) = (val); } while (0) - -#else /* little endian host */ - -#define le_to_h_u32(x) (*(u32*)(x)) -#define le_to_h_u16(x) (*(u16*)(x)) -#define be_to_h_u32(x) (u32)((x)[3] | (x)[2] << 8 | (x)[1] << 16 | (x)[0] << 24) -#define be_to_h_u16(x) (u16)((x)[1] | (x)[0] << 8) - -#define h_u32_to_le(buf, val) do { *(u32*)(buf) = (val); } while (0) -#define h_u16_to_le(buf, val) do { *(u16*)(buf) = (val); } while (0) - -#define h_u32_to_be(buf, val) \ - do { \ - (buf)[0] = ((val) & 0xff000000) >> 24; \ - (buf)[1] = ((val) & 0x00ff0000) >> 16; \ - (buf)[2] = ((val) & 0x0000ff00) >> 8; \ - (buf)[3] = ((val) & 0x000000ff); \ - } while (0) - -#define h_u16_to_be(buf, val) \ - do { \ - (buf)[0] = ((val) & 0xff00) >> 8; \ - (buf)[1] = ((val) & 0x00ff); \ - } while (0) + #ifndef LLONG_MAX + #define ULLONG_MAX UINT64_C(0xFFFFFFFFFFFFFFFF) + #define LLONG_MAX INT64_C(0x7FFFFFFFFFFFFFFF) + #define LLONG_MIN ULLONG_MAX + #endif + + +#define ULLONG_MAX 18446744073709551615 + +/* C99, eCos is C90 compliant (with bits of C99) */ +#define isblank(c) ((c) == ' ' || (c) == '\t') + + #endif #endif /* TYPES_H */