mirror of
https://gitea.osmocom.org/sim-card/simtrace2.git
synced 2026-03-25 01:38:33 +03:00
import libosmocore msgb handling (and dependencies)
This is supposed to be replaced with upstream libosmocore, as soon as that has a proper maintained embedded build (again).
This commit is contained in:
Harald Welte
92
firmware/libosmocore/source/backtrace.c
Normal file
92
firmware/libosmocore/source/backtrace.c
Normal file
@@ -0,0 +1,92 @@
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/*
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* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
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* (C) 2012 by Harald Welte <laforge@gnumonks.org>
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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||||
* 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.
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||||
*
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||||
* This program is distributed in the hope that it will be useful,
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||||
* 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.
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||||
*
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||||
* 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.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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/*! \file backtrace.c
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* \brief Routines realted to generating call back traces
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <osmocom/core/utils.h>
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//#include <osmocom/core/logging.h>
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//#include "config.h"
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#ifdef HAVE_EXECINFO_H
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#include <execinfo.h>
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static void _osmo_backtrace(int use_printf, int subsys, int level)
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{
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int i, nptrs;
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void *buffer[100];
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char **strings;
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nptrs = backtrace(buffer, ARRAY_SIZE(buffer));
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if (use_printf)
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printf("backtrace() returned %d addresses\n", nptrs);
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else
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LOGP(subsys, level, "backtrace() returned %d addresses\n",
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nptrs);
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strings = backtrace_symbols(buffer, nptrs);
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if (!strings)
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return;
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for (i = 1; i < nptrs; i++) {
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if (use_printf)
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printf("%s\n", strings[i]);
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else
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LOGP(subsys, level, "\t%s\n", strings[i]);
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}
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free(strings);
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}
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/*! \brief Generate and print a call back-trace
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*
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* This function will generate a function call back-trace of the
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* current process and print it to stdout. */
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void osmo_generate_backtrace(void)
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{
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_osmo_backtrace(1, 0, 0);
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}
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/*! \brief Generate and log a call back-trace
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* \param[in] subsys Logging sub-system
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* \param[in] level Logging level
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*
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* This function will generate a function call back-trace of the
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* current process and log it to the specified subsystem and
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* level using the libosmocore logging subsystem */
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void osmo_log_backtrace(int subsys, int level)
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{
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_osmo_backtrace(0, subsys, level);
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}
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#else
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void osmo_generate_backtrace(void)
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{
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printf("This platform has no backtrace function\n");
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}
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void osmo_log_backtrace(int subsys, int level)
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{
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//LOGP(subsys, level, "This platform has no backtrace function\n");
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}
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#endif
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307
firmware/libosmocore/source/bits.c
Normal file
307
firmware/libosmocore/source/bits.c
Normal file
@@ -0,0 +1,307 @@
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/*
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* (C) 2011 by Harald Welte <laforge@gnumonks.org>
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* (C) 2011 by Sylvain Munaut <tnt@246tNt.com>
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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||||
* the Free Software Foundation; either version 2 of the License, or
|
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* 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.,
|
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <stdint.h>
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#include <osmocom/core/bits.h>
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/*! \addtogroup bits
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* @{
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*/
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/*! \file bits.c
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* \brief Osmocom bit level support code
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*/
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/*! \brief convert unpacked bits to packed bits, return length in bytes
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* \param[out] out output buffer of packed bits
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* \param[in] in input buffer of unpacked bits
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* \param[in] num_bits number of bits
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*/
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int osmo_ubit2pbit(pbit_t *out, const ubit_t *in, unsigned int num_bits)
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{
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unsigned int i;
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uint8_t curbyte = 0;
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pbit_t *outptr = out;
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for (i = 0; i < num_bits; i++) {
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uint8_t bitnum = 7 - (i % 8);
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curbyte |= (in[i] << bitnum);
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if(i % 8 == 7){
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*outptr++ = curbyte;
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curbyte = 0;
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}
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}
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/* we have a non-modulo-8 bitcount */
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if (i % 8)
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*outptr++ = curbyte;
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return outptr - out;
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}
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/*! \brief Shift unaligned input to octet-aligned output
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* \param[out] out output buffer, unaligned
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* \param[in] in input buffer, octet-aligned
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* \param[in] num_nibbles number of nibbles
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*/
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void osmo_nibble_shift_right(uint8_t *out, const uint8_t *in,
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unsigned int num_nibbles)
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{
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unsigned int i, num_whole_bytes = num_nibbles / 2;
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if (!num_whole_bytes)
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return;
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/* first byte: upper nibble empty, lower nibble from src */
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out[0] = (in[0] >> 4);
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/* bytes 1.. */
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for (i = 1; i < num_whole_bytes; i++)
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out[i] = ((in[i - 1] & 0xF) << 4) | (in[i] >> 4);
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/* shift the last nibble, in case there's an odd count */
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i = num_whole_bytes;
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if (num_nibbles & 1)
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out[i] = ((in[i - 1] & 0xF) << 4) | (in[i] >> 4);
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else
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out[i] = (in[i - 1] & 0xF) << 4;
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}
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/*! \brief Shift unaligned input to octet-aligned output
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* \param[out] out output buffer, octet-aligned
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* \param[in] in input buffer, unaligned
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* \param[in] num_nibbles number of nibbles
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*/
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void osmo_nibble_shift_left_unal(uint8_t *out, const uint8_t *in,
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unsigned int num_nibbles)
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{
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unsigned int i, num_whole_bytes = num_nibbles / 2;
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if (!num_whole_bytes)
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return;
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for (i = 0; i < num_whole_bytes; i++)
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out[i] = ((in[i] & 0xF) << 4) | (in[i + 1] >> 4);
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/* shift the last nibble, in case there's an odd count */
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i = num_whole_bytes;
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if (num_nibbles & 1)
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out[i] = (in[i] & 0xF) << 4;
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}
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/*! \brief convert unpacked bits to soft bits
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* \param[out] out output buffer of soft bits
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* \param[in] in input buffer of unpacked bits
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* \param[in] num_bits number of bits
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*/
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void osmo_ubit2sbit(sbit_t *out, const ubit_t *in, unsigned int num_bits)
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{
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unsigned int i;
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for (i = 0; i < num_bits; i++)
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out[i] = in[i] ? -127 : 127;
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}
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/*! \brief convert soft bits to unpacked bits
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* \param[out] out output buffer of unpacked bits
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* \param[in] in input buffer of soft bits
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* \param[in] num_bits number of bits
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*/
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void osmo_sbit2ubit(ubit_t *out, const sbit_t *in, unsigned int num_bits)
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{
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unsigned int i;
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for (i = 0; i < num_bits; i++)
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out[i] = in[i] < 0;
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}
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/*! \brief convert packed bits to unpacked bits, return length in bytes
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* \param[out] out output buffer of unpacked bits
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* \param[in] in input buffer of packed bits
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* \param[in] num_bits number of bits
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* \return number of bytes used in \ref out
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*/
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int osmo_pbit2ubit(ubit_t *out, const pbit_t *in, unsigned int num_bits)
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{
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unsigned int i;
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ubit_t *cur = out;
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ubit_t *limit = out + num_bits;
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for (i = 0; i < (num_bits/8)+1; i++) {
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pbit_t byte = in[i];
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*cur++ = (byte >> 7) & 1;
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if (cur >= limit)
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break;
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*cur++ = (byte >> 6) & 1;
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if (cur >= limit)
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break;
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*cur++ = (byte >> 5) & 1;
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if (cur >= limit)
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break;
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*cur++ = (byte >> 4) & 1;
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if (cur >= limit)
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break;
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*cur++ = (byte >> 3) & 1;
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if (cur >= limit)
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break;
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*cur++ = (byte >> 2) & 1;
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if (cur >= limit)
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break;
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*cur++ = (byte >> 1) & 1;
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if (cur >= limit)
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break;
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*cur++ = (byte >> 0) & 1;
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if (cur >= limit)
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break;
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}
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return cur - out;
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}
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/*! \brief convert unpacked bits to packed bits (extended options)
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* \param[out] out output buffer of packed bits
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* \param[in] out_ofs offset into output buffer
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* \param[in] in input buffer of unpacked bits
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* \param[in] in_ofs offset into input buffer
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* \param[in] num_bits number of bits
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* \param[in] lsb_mode Encode bits in LSB orde instead of MSB
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* \returns length in bytes (max written offset of output buffer + 1)
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*/
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int osmo_ubit2pbit_ext(pbit_t *out, unsigned int out_ofs,
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const ubit_t *in, unsigned int in_ofs,
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unsigned int num_bits, int lsb_mode)
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{
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int i, op, bn;
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for (i=0; i<num_bits; i++) {
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op = out_ofs + i;
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bn = lsb_mode ? (op&7) : (7-(op&7));
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if (in[in_ofs+i])
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out[op>>3] |= 1 << bn;
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else
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out[op>>3] &= ~(1 << bn);
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}
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return ((out_ofs + num_bits - 1) >> 3) + 1;
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}
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/*! \brief convert packed bits to unpacked bits (extended options)
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* \param[out] out output buffer of unpacked bits
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* \param[in] out_ofs offset into output buffer
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* \param[in] in input buffer of packed bits
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* \param[in] in_ofs offset into input buffer
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* \param[in] num_bits number of bits
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* \param[in] lsb_mode Encode bits in LSB orde instead of MSB
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* \returns length in bytes (max written offset of output buffer + 1)
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*/
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int osmo_pbit2ubit_ext(ubit_t *out, unsigned int out_ofs,
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const pbit_t *in, unsigned int in_ofs,
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unsigned int num_bits, int lsb_mode)
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{
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int i, ip, bn;
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for (i=0; i<num_bits; i++) {
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ip = in_ofs + i;
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bn = lsb_mode ? (ip&7) : (7-(ip&7));
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out[out_ofs+i] = !!(in[ip>>3] & (1<<bn));
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}
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return out_ofs + num_bits;
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}
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/*! \brief generalized bit reversal function
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* \param[in] x the 32bit value to be reversed
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* \param[in] k the type of reversal requested
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* \returns the reversed 32bit dword
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*
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* This function reverses the bit order within a 32bit word. Depending
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* on "k", it either reverses all bits in a 32bit dword, or the bytes in
|
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* the dword, or the bits in each byte of a dword, or simply swaps the
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* two 16bit words in a dword. See Chapter 7 "Hackers Delight"
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*/
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uint32_t osmo_bit_reversal(uint32_t x, enum osmo_br_mode k)
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||||
{
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if (k & 1) x = (x & 0x55555555) << 1 | (x & 0xAAAAAAAA) >> 1;
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||||
if (k & 2) x = (x & 0x33333333) << 2 | (x & 0xCCCCCCCC) >> 2;
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||||
if (k & 4) x = (x & 0x0F0F0F0F) << 4 | (x & 0xF0F0F0F0) >> 4;
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if (k & 8) x = (x & 0x00FF00FF) << 8 | (x & 0xFF00FF00) >> 8;
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if (k & 16) x = (x & 0x0000FFFF) << 16 | (x & 0xFFFF0000) >> 16;
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return x;
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||||
}
|
||||
|
||||
/*! \brief reverse the bit-order in each byte of a dword
|
||||
* \param[in] x 32bit input value
|
||||
* \returns 32bit value where bits of each byte have been reversed
|
||||
*
|
||||
* See Chapter 7 "Hackers Delight"
|
||||
*/
|
||||
uint32_t osmo_revbytebits_32(uint32_t x)
|
||||
{
|
||||
x = (x & 0x55555555) << 1 | (x & 0xAAAAAAAA) >> 1;
|
||||
x = (x & 0x33333333) << 2 | (x & 0xCCCCCCCC) >> 2;
|
||||
x = (x & 0x0F0F0F0F) << 4 | (x & 0xF0F0F0F0) >> 4;
|
||||
|
||||
return x;
|
||||
}
|
||||
|
||||
/*! \brief reverse the bit order in a byte
|
||||
* \param[in] x 8bit input value
|
||||
* \returns 8bit value where bits order has been reversed
|
||||
*
|
||||
* See Chapter 7 "Hackers Delight"
|
||||
*/
|
||||
uint32_t osmo_revbytebits_8(uint8_t x)
|
||||
{
|
||||
x = (x & 0x55) << 1 | (x & 0xAA) >> 1;
|
||||
x = (x & 0x33) << 2 | (x & 0xCC) >> 2;
|
||||
x = (x & 0x0F) << 4 | (x & 0xF0) >> 4;
|
||||
|
||||
return x;
|
||||
}
|
||||
|
||||
/*! \brief reverse bit-order of each byte in a buffer
|
||||
* \param[in] buf buffer containing bytes to be bit-reversed
|
||||
* \param[in] len length of buffer in bytes
|
||||
*
|
||||
* This function reverses the bits in each byte of the buffer
|
||||
*/
|
||||
void osmo_revbytebits_buf(uint8_t *buf, int len)
|
||||
{
|
||||
unsigned int i;
|
||||
unsigned int unaligned_cnt;
|
||||
int len_remain = len;
|
||||
|
||||
unaligned_cnt = ((unsigned long)buf & 3);
|
||||
for (i = 0; i < unaligned_cnt; i++) {
|
||||
buf[i] = osmo_revbytebits_8(buf[i]);
|
||||
len_remain--;
|
||||
if (len_remain <= 0)
|
||||
return;
|
||||
}
|
||||
|
||||
for (i = unaligned_cnt; i + 3 < len; i += 4) {
|
||||
osmo_store32be(osmo_revbytebits_32(osmo_load32be(buf + i)), buf + i);
|
||||
len_remain -= 4;
|
||||
}
|
||||
|
||||
for (i = len - len_remain; i < len; i++) {
|
||||
buf[i] = osmo_revbytebits_8(buf[i]);
|
||||
len_remain--;
|
||||
}
|
||||
}
|
||||
|
||||
/*! @} */
|
||||
353
firmware/libosmocore/source/msgb.c
Normal file
353
firmware/libosmocore/source/msgb.c
Normal file
@@ -0,0 +1,353 @@
|
||||
/* (C) 2008 by Harald Welte <laforge@gnumonks.org>
|
||||
* (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
|
||||
* 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.
|
||||
*
|
||||
*/
|
||||
|
||||
/*! \addtogroup msgb
|
||||
* @{
|
||||
*/
|
||||
|
||||
/*! \file msgb.c
|
||||
*/
|
||||
|
||||
#include <unistd.h>
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#include <inttypes.h>
|
||||
|
||||
#include <osmocom/core/msgb.h>
|
||||
//#include <openbsc/gsm_data.h>
|
||||
#include <osmocom/core/talloc.h>
|
||||
//#include <openbsc/debug.h>
|
||||
|
||||
void *tall_msgb_ctx = NULL;
|
||||
|
||||
/*! \brief Allocate a new message buffer
|
||||
* \param[in] size Length in octets, including headroom
|
||||
* \param[in] name Human-readable name to be associated with msgb
|
||||
* \returns dynamically-allocated \ref msgb
|
||||
*
|
||||
* This function allocates a 'struct msgb' as well as the underlying
|
||||
* memory buffer for the actual message data (size specified by \a size)
|
||||
* using the talloc memory context previously set by \ref msgb_set_talloc_ctx
|
||||
*/
|
||||
struct msgb *msgb_alloc(uint16_t size, const char *name)
|
||||
{
|
||||
struct msgb *msg;
|
||||
|
||||
msg = _talloc_zero(tall_msgb_ctx, sizeof(*msg) + size, name);
|
||||
|
||||
if (!msg) {
|
||||
//LOGP(DRSL, LOGL_FATAL, "unable to allocate msgb\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
msg->data_len = size;
|
||||
msg->len = 0;
|
||||
msg->data = msg->_data;
|
||||
msg->head = msg->_data;
|
||||
msg->tail = msg->_data;
|
||||
|
||||
return msg;
|
||||
}
|
||||
|
||||
/*! \brief Release given message buffer
|
||||
* \param[in] m Message buffer to be free'd
|
||||
*/
|
||||
void msgb_free(struct msgb *m)
|
||||
{
|
||||
talloc_free(m);
|
||||
}
|
||||
|
||||
/*! \brief Enqueue message buffer to tail of a queue
|
||||
* \param[in] queue linked list header of queue
|
||||
* \param[in] msg message buffer to be added to the queue
|
||||
*
|
||||
* The function will append the specified message buffer \a msg to the
|
||||
* queue implemented by \ref llist_head \a queue
|
||||
*/
|
||||
void msgb_enqueue(struct llist_head *queue, struct msgb *msg)
|
||||
{
|
||||
llist_add_tail(&msg->list, queue);
|
||||
}
|
||||
|
||||
/*! \brief Dequeue message buffer from head of queue
|
||||
* \param[in] queue linked list header of queue
|
||||
* \returns message buffer (if any) or NULL if queue empty
|
||||
*
|
||||
* The function will remove the first message buffer from the queue
|
||||
* implemented by \ref llist_head \a queue.
|
||||
*/
|
||||
struct msgb *msgb_dequeue(struct llist_head *queue)
|
||||
{
|
||||
struct llist_head *lh;
|
||||
|
||||
if (llist_empty(queue))
|
||||
return NULL;
|
||||
|
||||
lh = queue->next;
|
||||
|
||||
if (lh) {
|
||||
llist_del(lh);
|
||||
return llist_entry(lh, struct msgb, list);
|
||||
} else
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*! \brief Re-set all message buffer pointers
|
||||
* \param[in] msg message buffer that is to be resetted
|
||||
*
|
||||
* This will re-set the various internal pointers into the underlying
|
||||
* message buffer, i.e. remvoe all headroom and treat the msgb as
|
||||
* completely empty. It also initializes the control buffer to zero.
|
||||
*/
|
||||
void msgb_reset(struct msgb *msg)
|
||||
{
|
||||
msg->len = 0;
|
||||
msg->data = msg->_data;
|
||||
msg->head = msg->_data;
|
||||
msg->tail = msg->_data;
|
||||
|
||||
msg->trx = NULL;
|
||||
msg->lchan = NULL;
|
||||
msg->l2h = NULL;
|
||||
msg->l3h = NULL;
|
||||
msg->l4h = NULL;
|
||||
|
||||
memset(&msg->cb, 0, sizeof(msg->cb));
|
||||
}
|
||||
|
||||
/*! \brief get pointer to data section of message buffer
|
||||
* \param[in] msg message buffer
|
||||
* \returns pointer to data section of message buffer
|
||||
*/
|
||||
uint8_t *msgb_data(const struct msgb *msg)
|
||||
{
|
||||
return msg->data;
|
||||
}
|
||||
|
||||
/*! \brief get length of message buffer
|
||||
* \param[in] msg message buffer
|
||||
* \returns length of data section in message buffer
|
||||
*/
|
||||
uint16_t msgb_length(const struct msgb *msg)
|
||||
{
|
||||
return msg->len;
|
||||
}
|
||||
|
||||
/*! \brief Set the talloc context for \ref msgb_alloc
|
||||
* Deprecated, use msgb_talloc_ctx_init() instead.
|
||||
* \param[in] ctx talloc context to be used as root for msgb allocations
|
||||
*/
|
||||
void msgb_set_talloc_ctx(void *ctx)
|
||||
{
|
||||
tall_msgb_ctx = ctx;
|
||||
}
|
||||
|
||||
/*! \brief Initialize a msgb talloc context for \ref msgb_alloc.
|
||||
* Create a talloc context called "msgb". If \a pool_size is 0, create a named
|
||||
* const as msgb talloc context. If \a pool_size is nonzero, create a talloc
|
||||
* pool, possibly for faster msgb allocations (see talloc_pool()).
|
||||
* \param[in] root_ctx talloc context used as parent for the new "msgb" ctx.
|
||||
* \param[in] pool_size if nonzero, create a talloc pool of this size.
|
||||
* \returns the new msgb talloc context, e.g. for reporting
|
||||
*/
|
||||
void *msgb_talloc_ctx_init(void *root_ctx, unsigned int pool_size)
|
||||
{
|
||||
if (!pool_size)
|
||||
tall_msgb_ctx = talloc_size(root_ctx, 0);
|
||||
else
|
||||
tall_msgb_ctx = talloc_pool(root_ctx, pool_size);
|
||||
talloc_set_name_const(tall_msgb_ctx, "msgb");
|
||||
return tall_msgb_ctx;
|
||||
}
|
||||
|
||||
/*! \brief Copy an msgb.
|
||||
*
|
||||
* This function allocates a new msgb, copies the data buffer of msg,
|
||||
* and adjusts the pointers (incl l1h-l4h) accordingly. The cb part
|
||||
* is not copied.
|
||||
* \param[in] msg The old msgb object
|
||||
* \param[in] name Human-readable name to be associated with msgb
|
||||
*/
|
||||
struct msgb *msgb_copy(const struct msgb *msg, const char *name)
|
||||
{
|
||||
struct msgb *new_msg;
|
||||
|
||||
new_msg = msgb_alloc(msg->data_len, name);
|
||||
if (!new_msg)
|
||||
return NULL;
|
||||
|
||||
/* copy data */
|
||||
memcpy(new_msg->_data, msg->_data, new_msg->data_len);
|
||||
|
||||
/* copy header */
|
||||
new_msg->len = msg->len;
|
||||
new_msg->data += msg->data - msg->_data;
|
||||
new_msg->head += msg->head - msg->_data;
|
||||
new_msg->tail += msg->tail - msg->_data;
|
||||
|
||||
if (msg->l1h)
|
||||
new_msg->l1h = new_msg->_data + (msg->l1h - msg->_data);
|
||||
if (msg->l2h)
|
||||
new_msg->l2h = new_msg->_data + (msg->l2h - msg->_data);
|
||||
if (msg->l3h)
|
||||
new_msg->l3h = new_msg->_data + (msg->l3h - msg->_data);
|
||||
if (msg->l4h)
|
||||
new_msg->l4h = new_msg->_data + (msg->l4h - msg->_data);
|
||||
|
||||
return new_msg;
|
||||
}
|
||||
|
||||
/*! \brief Resize an area within an msgb
|
||||
*
|
||||
* This resizes a sub area of the msgb data and adjusts the pointers (incl
|
||||
* l1h-l4h) accordingly. The cb part is not updated. If the area is extended,
|
||||
* the contents of the extension is undefined. The complete sub area must be a
|
||||
* part of [data,tail].
|
||||
*
|
||||
* \param[inout] msg The msgb object
|
||||
* \param[in] area A pointer to the sub-area
|
||||
* \param[in] old_size The old size of the sub-area
|
||||
* \param[in] new_size The new size of the sub-area
|
||||
* \returns 0 on success, -1 if there is not enough space to extend the area
|
||||
*/
|
||||
int msgb_resize_area(struct msgb *msg, uint8_t *area,
|
||||
int old_size, int new_size)
|
||||
{
|
||||
int rc;
|
||||
uint8_t *post_start = area + old_size;
|
||||
int pre_len = area - msg->data;
|
||||
int post_len = msg->len - old_size - pre_len;
|
||||
int delta_size = new_size - old_size;
|
||||
|
||||
if (old_size < 0 || new_size < 0)
|
||||
MSGB_ABORT(msg, "Negative sizes are not allowed\n");
|
||||
if (area < msg->data || post_start > msg->tail)
|
||||
MSGB_ABORT(msg, "Sub area is not fully contained in the msg data\n");
|
||||
|
||||
if (delta_size == 0)
|
||||
return 0;
|
||||
|
||||
if (delta_size > 0) {
|
||||
rc = msgb_trim(msg, msg->len + delta_size);
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
}
|
||||
|
||||
memmove(area + new_size, area + old_size, post_len);
|
||||
|
||||
if (msg->l1h >= post_start)
|
||||
msg->l1h += delta_size;
|
||||
if (msg->l2h >= post_start)
|
||||
msg->l2h += delta_size;
|
||||
if (msg->l3h >= post_start)
|
||||
msg->l3h += delta_size;
|
||||
if (msg->l4h >= post_start)
|
||||
msg->l4h += delta_size;
|
||||
|
||||
if (delta_size < 0)
|
||||
msgb_trim(msg, msg->len + delta_size);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*! \brief Return a (static) buffer containing a hexdump of the msg
|
||||
* \param[in] msg message buffer
|
||||
* \returns a pointer to a static char array
|
||||
*/
|
||||
const char *msgb_hexdump(const struct msgb *msg)
|
||||
{
|
||||
static char buf[4100];
|
||||
int buf_offs = 0;
|
||||
int nchars;
|
||||
const unsigned char *start = msg->data;
|
||||
const unsigned char *lxhs[4];
|
||||
int i;
|
||||
|
||||
lxhs[0] = msg->l1h;
|
||||
lxhs[1] = msg->l2h;
|
||||
lxhs[2] = msg->l3h;
|
||||
lxhs[3] = msg->l4h;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(lxhs); i++) {
|
||||
if (!lxhs[i])
|
||||
continue;
|
||||
|
||||
if (lxhs[i] < msg->head)
|
||||
continue;
|
||||
if (lxhs[i] > msg->head + msg->data_len)
|
||||
continue;
|
||||
if (lxhs[i] > msg->tail)
|
||||
continue;
|
||||
if (lxhs[i] < msg->data || lxhs[i] > msg->tail) {
|
||||
nchars = snprintf(buf + buf_offs, sizeof(buf) - buf_offs,
|
||||
"(L%d=data%+" PRIdPTR ") ",
|
||||
i+1, lxhs[i] - msg->data);
|
||||
buf_offs += nchars;
|
||||
continue;
|
||||
}
|
||||
if (lxhs[i] < start) {
|
||||
nchars = snprintf(buf + buf_offs, sizeof(buf) - buf_offs,
|
||||
"(L%d%+" PRIdPTR ") ", i+1,
|
||||
start - lxhs[i]);
|
||||
buf_offs += nchars;
|
||||
continue;
|
||||
}
|
||||
nchars = snprintf(buf + buf_offs, sizeof(buf) - buf_offs,
|
||||
"%s[L%d]> ",
|
||||
osmo_hexdump(start, lxhs[i] - start),
|
||||
i+1);
|
||||
if (nchars < 0 || nchars + buf_offs >= sizeof(buf))
|
||||
return "ERROR";
|
||||
|
||||
buf_offs += nchars;
|
||||
start = lxhs[i];
|
||||
}
|
||||
nchars = snprintf(buf + buf_offs, sizeof(buf) - buf_offs,
|
||||
"%s", osmo_hexdump(start, msg->tail - start));
|
||||
if (nchars < 0 || nchars + buf_offs >= sizeof(buf))
|
||||
return "ERROR";
|
||||
|
||||
buf_offs += nchars;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(lxhs); i++) {
|
||||
if (!lxhs[i])
|
||||
continue;
|
||||
|
||||
if (lxhs[i] < msg->head || lxhs[i] > msg->head + msg->data_len) {
|
||||
nchars = snprintf(buf + buf_offs, sizeof(buf) - buf_offs,
|
||||
"(L%d out of range) ", i+1);
|
||||
} else if (lxhs[i] <= msg->data + msg->data_len &&
|
||||
lxhs[i] > msg->tail) {
|
||||
nchars = snprintf(buf + buf_offs, sizeof(buf) - buf_offs,
|
||||
"(L%d=tail%+" PRIdPTR ") ",
|
||||
i+1, lxhs[i] - msg->tail);
|
||||
} else
|
||||
continue;
|
||||
|
||||
if (nchars < 0 || nchars + buf_offs >= sizeof(buf))
|
||||
return "ERROR";
|
||||
buf_offs += nchars;
|
||||
}
|
||||
|
||||
return buf;
|
||||
}
|
||||
|
||||
/*! @} */
|
||||
102
firmware/libosmocore/source/panic.c
Normal file
102
firmware/libosmocore/source/panic.c
Normal file
@@ -0,0 +1,102 @@
|
||||
/* Panic handling */
|
||||
/*
|
||||
* (C) 2010 by Sylvain Munaut <tnt@246tNt.com>
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
*/
|
||||
|
||||
/*! \addtogroup utils
|
||||
* @{
|
||||
*/
|
||||
|
||||
/*! \file panic.c
|
||||
* \brief Routines for panic handling
|
||||
*/
|
||||
|
||||
#include <assert.h>
|
||||
#include <osmocom/core/panic.h>
|
||||
#include <osmocom/core/backtrace.h>
|
||||
|
||||
//#include "../config.h"
|
||||
|
||||
|
||||
static osmo_panic_handler_t osmo_panic_handler = (void*)0;
|
||||
|
||||
|
||||
#ifndef PANIC_INFLOOP
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
static void osmo_panic_default(const char *fmt, va_list args)
|
||||
{
|
||||
vfprintf(stderr, fmt, args);
|
||||
osmo_generate_backtrace();
|
||||
assert(0);
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
static void osmo_panic_default(const char *fmt, va_list args)
|
||||
{
|
||||
while (1);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
/*! \brief Terminate the current program with a panic
|
||||
*
|
||||
* You can call this function in case some severely unexpected situation
|
||||
* is detected and the program is supposed to terminate in a way that
|
||||
* reports the fact that it terminates.
|
||||
*
|
||||
* The application can register a panic handler function using \ref
|
||||
* osmo_set_panic_handler. If it doesn't, a default panic handler
|
||||
* function is called automatically.
|
||||
*
|
||||
* The default function on most systems will generate a backtrace and
|
||||
* then abort() the process.
|
||||
*/
|
||||
void osmo_panic(const char *fmt, ...)
|
||||
{
|
||||
va_list args;
|
||||
|
||||
va_start(args, fmt);
|
||||
|
||||
if (osmo_panic_handler)
|
||||
osmo_panic_handler(fmt, args);
|
||||
else
|
||||
osmo_panic_default(fmt, args);
|
||||
|
||||
va_end(args);
|
||||
}
|
||||
|
||||
|
||||
/*! \brief Set the panic handler
|
||||
* \param[in] h New panic handler function
|
||||
*
|
||||
* This changes the panic handling function from the currently active
|
||||
* function to a new call-back function supplied by the caller.
|
||||
*/
|
||||
void osmo_set_panic_handler(osmo_panic_handler_t h)
|
||||
{
|
||||
osmo_panic_handler = h;
|
||||
}
|
||||
|
||||
/*! @} */
|
||||
Reference in New Issue
Block a user