diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/Makefile.am | 7 | ||||
| -rw-r--r-- | include/osmocom/core/bitXXgen.h.tpl | 103 | ||||
| -rw-r--r-- | include/osmocom/core/bits.h | 5 | ||||
| -rw-r--r-- | include/osmocom/core/msgb.h | 23 |
4 files changed, 128 insertions, 10 deletions
diff --git a/include/Makefile.am b/include/Makefile.am index b0359064..48ca7ea2 100644 --- a/include/Makefile.am +++ b/include/Makefile.am @@ -2,6 +2,9 @@ nobase_include_HEADERS = \ osmocom/codec/codec.h \ osmocom/core/application.h \ osmocom/core/backtrace.h \ + osmocom/core/bit16gen.h \ + osmocom/core/bit32gen.h \ + osmocom/core/bit64gen.h \ osmocom/core/bits.h \ osmocom/core/bitvec.h \ osmocom/core/conv.h \ @@ -107,6 +110,10 @@ endif noinst_HEADERS = osmocom/core/timer_compat.h +osmocom/core/bit%gen.h: osmocom/core/bitXXgen.h.tpl + $(AM_V_GEN)$(MKDIR_P) $(dir $@) + $(AM_V_GEN)sed -e's/XX/$*/g' $< > $@ + osmocom/core/crc%gen.h: osmocom/core/crcXXgen.h.tpl $(AM_V_GEN)$(MKDIR_P) $(dir $@) $(AM_V_GEN)sed -e's/XX/$*/g' $< > $@ diff --git a/include/osmocom/core/bitXXgen.h.tpl b/include/osmocom/core/bitXXgen.h.tpl new file mode 100644 index 00000000..35f26db7 --- /dev/null +++ b/include/osmocom/core/bitXXgen.h.tpl @@ -0,0 +1,103 @@ +/* + * bitXXgen.h + * + * Copyright (C) 2014 Max <max.suraev@fairwaves.co> + * + * 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; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#pragma once + +/*! \brief load unaligned n-byte integer (little-endian encoding) into uintXX_t + * \param[in] p Buffer where integer is stored + * \param[in] n Number of bytes stored in p + * \returns XX bit unsigned integer + */ +static inline uintXX_t osmo_loadXXle_ext(const void *p, uint8_t n) +{ + uint8_t i; + uintXX_t r = 0; + const uint8_t *q = (uint8_t *)p; + for(i = 0; i < n; r |= ((uintXX_t)q[i] << (8 * i)), i++); + return r; +} + +/*! \brief load unaligned n-byte integer (big-endian encoding) into uintXX_t + * \param[in] p Buffer where integer is stored + * \param[in] n Number of bytes stored in p + * \returns XX bit unsigned integer + */ +static inline uintXX_t osmo_loadXXbe_ext(const void *p, uint8_t n) +{ + uint8_t i; + uintXX_t r = 0; + const uint8_t *q = (uint8_t *)p; + for(i = 0; i < n; r |= ((uintXX_t)q[i] << (XX - 8* (1 + i))), i++); + return r; +} + + +/*! \brief store unaligned n-byte integer (little-endian encoding) into uintXX_t + * \param[in] x unsigned XX bit integer + * \param[out] p Buffer to store integer + * \param[in] n Number of bytes to store + */ +static inline void osmo_storeXXle_ext(uintXX_t x, uint8_t *p, uint8_t n) +{ + uint8_t i; + for(i = 0; i < n; p[i] = (x >> i * 8) & 0xFF, i++); +} + +/*! \brief store unaligned n-byte integer (big-endian encoding) into uintXX_t + * \param[in] x unsigned XX bit integer + * \param[out] p Buffer to store integer + * \param[in] n Number of bytes to store + */ +static inline void osmo_storeXXbe_ext(uintXX_t x, uint8_t *p, uint8_t n) +{ + uint8_t i; + for(i = 0; i < n; p[i] = (x >> ((n - 1 - i) * 8)) & 0xFF, i++); +} + + +/* Convenience function for most-used cases */ + + +/*! \brief load unaligned XX-bit integer (little-endian encoding) */ +static inline uintXX_t osmo_loadXXle(const void *p) +{ + return osmo_loadXXle_ext(p, XX / 8); +} + +/*! \brief load unaligned XX-bit integer (big-endian encoding) */ +static inline uintXX_t osmo_loadXXbe(const void *p) +{ + return osmo_loadXXbe_ext(p, XX / 8); +} + + +/*! \brief store unaligned XX-bit integer (little-endian encoding) */ +static inline void osmo_storeXXle(uintXX_t x, void *p) +{ + return osmo_storeXXle_ext(x, p, XX / 8); +} + +/*! \brief store unaligned XX-bit integer (big-endian encoding) */ +static inline void osmo_storeXXbe(uintXX_t x, void *p) +{ + return osmo_storeXXbe_ext(x, p, XX / 8); +} diff --git a/include/osmocom/core/bits.h b/include/osmocom/core/bits.h index d4ab5056..f3045e47 100644 --- a/include/osmocom/core/bits.h +++ b/include/osmocom/core/bits.h @@ -1,6 +1,11 @@ #pragma once #include <stdint.h> +#include <stddef.h> + +#include <osmocom/core/bit16gen.h> +#include <osmocom/core/bit32gen.h> +#include <osmocom/core/bit64gen.h> /*! \defgroup bits soft, unpacked and packed bits * @{ diff --git a/include/osmocom/core/msgb.h b/include/osmocom/core/msgb.h index bf83d677..19e4a3d0 100644 --- a/include/osmocom/core/msgb.h +++ b/include/osmocom/core/msgb.h @@ -22,6 +22,7 @@ #include <stdint.h> #include <osmocom/core/linuxlist.h> #include <osmocom/core/utils.h> +#include <osmocom/core/bits.h> /*! \defgroup msgb Message buffers * @{ @@ -204,8 +205,7 @@ static inline void msgb_put_u8(struct msgb *msgb, uint8_t word) static inline void msgb_put_u16(struct msgb *msgb, uint16_t word) { uint8_t *space = msgb_put(msgb, 2); - space[0] = word >> 8 & 0xFF; - space[1] = word & 0xFF; + osmo_store16be(word, space); } /*! \brief append a uint32 value to the end of the message @@ -215,10 +215,7 @@ static inline void msgb_put_u16(struct msgb *msgb, uint16_t word) static inline void msgb_put_u32(struct msgb *msgb, uint32_t word) { uint8_t *space = msgb_put(msgb, 4); - space[0] = word >> 24 & 0xFF; - space[1] = word >> 16 & 0xFF; - space[2] = word >> 8 & 0xFF; - space[3] = word & 0xFF; + osmo_store32be(word, space); } /*! \brief remove data from end of message @@ -235,6 +232,7 @@ static inline unsigned char *msgb_get(struct msgb *msgb, unsigned int len) msgb->len -= len; return tmp; } + /*! \brief remove uint8 from end of message * \param[in] msgb message buffer * \returns 8bit value taken from end of msgb @@ -244,6 +242,7 @@ static inline uint8_t msgb_get_u8(struct msgb *msgb) uint8_t *space = msgb_get(msgb, 1); return space[0]; } + /*! \brief remove uint16 from end of message * \param[in] msgb message buffer * \returns 16bit value taken from end of msgb @@ -251,8 +250,9 @@ static inline uint8_t msgb_get_u8(struct msgb *msgb) static inline uint16_t msgb_get_u16(struct msgb *msgb) { uint8_t *space = msgb_get(msgb, 2); - return space[0] << 8 | space[1]; + return osmo_load16be(space); } + /*! \brief remove uint32 from end of message * \param[in] msgb message buffer * \returns 32bit value taken from end of msgb @@ -260,7 +260,7 @@ static inline uint16_t msgb_get_u16(struct msgb *msgb) static inline uint32_t msgb_get_u32(struct msgb *msgb) { uint8_t *space = msgb_get(msgb, 4); - return space[0] << 24 | space[1] << 16 | space[2] << 8 | space[3]; + return osmo_load32be(space); } /*! \brief prepend (push) some data to start of message @@ -284,6 +284,7 @@ static inline unsigned char *msgb_push(struct msgb *msgb, unsigned int len) msgb->len += len; return msgb->data; } + /*! \brief remove (pull) a header from the front of the message buffer * \param[in] msgb message buffer * \param[in] len number of octets to be pulled @@ -323,6 +324,7 @@ static inline uint8_t msgb_pull_u8(struct msgb *msgb) uint8_t *space = msgb_pull(msgb, 1) - 1; return space[0]; } + /*! \brief remove uint16 from front of message * \param[in] msgb message buffer * \returns 16bit value taken from end of msgb @@ -330,8 +332,9 @@ static inline uint8_t msgb_pull_u8(struct msgb *msgb) static inline uint16_t msgb_pull_u16(struct msgb *msgb) { uint8_t *space = msgb_pull(msgb, 2) - 2; - return space[0] << 8 | space[1]; + return osmo_load16be(space); } + /*! \brief remove uint32 from front of message * \param[in] msgb message buffer * \returns 32bit value taken from end of msgb @@ -339,7 +342,7 @@ static inline uint16_t msgb_pull_u16(struct msgb *msgb) static inline uint32_t msgb_pull_u32(struct msgb *msgb) { uint8_t *space = msgb_pull(msgb, 4) - 4; - return space[0] << 24 | space[1] << 16 | space[2] << 8 | space[3]; + return osmo_load32be(space); } /*! \brief Increase headroom of empty msgb, reducing the tailroom |