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Mark Qvist
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290
bertos/drv/kdebug.c
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290
bertos/drv/kdebug.c
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/**
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* \file
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* <!--
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* This file is part of BeRTOS.
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*
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* Bertos 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
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* As a special exception, you may use this file as part of a free software
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* library without restriction. Specifically, if other files instantiate
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* templates or use macros or inline functions from this file, or you compile
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* this file and link it with other files to produce an executable, this
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* file does not by itself cause the resulting executable to be covered by
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* the GNU General Public License. This exception does not however
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* invalidate any other reasons why the executable file might be covered by
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* the GNU General Public License.
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*
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* Copyright 2003, 2004, 2005, 2006, 2007 Develer S.r.l. (http://www.develer.com/)
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* Copyright 2000, 2001, 2002 Bernie Innocenti <bernie@codewiz.org>
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* -->
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*
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* \brief General pourpose debug support for embedded systems (implementation).
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*
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* \author Bernie Innocenti <bernie@codewiz.org>
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* \author Stefano Fedrigo <aleph@develer.com>
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*/
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#include "cfg/cfg_debug.h"
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#include <cfg/macros.h> /* for BV() */
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#include <cfg/debug.h>
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#include <cfg/os.h>
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#include <cpu/attr.h>
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#include <cpu/types.h>
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#include <mware/formatwr.h> /* for _formatted_write() */
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#include <cpu/pgm.h>
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#ifdef _DEBUG
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#if CPU_HARVARD && !defined(_PROGMEM)
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#error This module build correctly only in program memory!
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#endif
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#if OS_HOSTED
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#include <unistd.h> // write()
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#define KDBG_WAIT_READY() do { /*nop*/ } while(0)
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#define KDBG_WRITE_CHAR(c) do { char __c = (c); write(STDERR_FILENO, &__c, sizeof(__c)); } while(0)
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#define KDBG_MASK_IRQ(old) do { (void)(old); } while(0)
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#define KDBG_RESTORE_IRQ(old) do { /*nop*/ } while(0)
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typedef char kdbg_irqsave_t; /* unused */
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#define kdbg_hw_init() do {} while (0) ///< Not needed
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#if CONFIG_KDEBUG_PORT == 666
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#error BITBANG debug console missing for this platform
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#endif
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#else
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#include CPU_CSOURCE(kdebug)
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#endif
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void kdbg_init(void)
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{
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/* Init debug hw */
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kdbg_hw_init();
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kputs("\n\n*** BeRTOS DBG START ***\n");
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}
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/**
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* Output one character to the debug console
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*/
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static void __kputchar(char c, UNUSED_ARG(void *, unused))
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{
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/* Poll while serial buffer is still busy */
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KDBG_WAIT_READY();
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/* Send '\n' as '\r\n' for dumb terminals */
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if (c == '\n')
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{
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KDBG_WRITE_CHAR('\r');
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KDBG_WAIT_READY();
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}
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KDBG_WRITE_CHAR(c);
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}
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void kputchar(char c)
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{
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/* Mask serial TX intr */
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kdbg_irqsave_t irqsave;
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KDBG_MASK_IRQ(irqsave);
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__kputchar(c, 0);
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/* Restore serial TX intr */
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KDBG_RESTORE_IRQ(irqsave);
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}
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static void PGM_FUNC(kvprintf)(const char * PGM_ATTR fmt, va_list ap)
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{
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#if CONFIG_PRINTF
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/* Mask serial TX intr */
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kdbg_irqsave_t irqsave;
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KDBG_MASK_IRQ(irqsave);
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PGM_FUNC(_formatted_write)(fmt, __kputchar, 0, ap);
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/* Restore serial TX intr */
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KDBG_RESTORE_IRQ(irqsave);
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#else
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/* A better than nothing printf() surrogate. */
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PGM_FUNC(kputs)(fmt);
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#endif /* CONFIG_PRINTF */
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}
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void PGM_FUNC(kprintf)(const char * PGM_ATTR fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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PGM_FUNC(kvprintf)(fmt, ap);
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va_end(ap);
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}
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void PGM_FUNC(kputs)(const char * PGM_ATTR str)
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{
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char c;
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/* Mask serial TX intr */
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kdbg_irqsave_t irqsave;
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KDBG_MASK_IRQ(irqsave);
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while ((c = PGM_READ_CHAR(str++)))
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__kputchar(c, 0);
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KDBG_RESTORE_IRQ(irqsave);
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}
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/**
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* Cheap function to print small integers without using printf().
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*/
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int kputnum(int num)
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{
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int output_len = 0;
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int divisor = 10000;
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int digit;
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do
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{
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digit = num / divisor;
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num %= divisor;
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if (digit || output_len || divisor == 1)
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{
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kputchar(digit + '0');
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++output_len;
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}
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}
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while (divisor /= 10);
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return output_len;
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}
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static void klocation(const char * PGM_ATTR file, int line)
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{
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PGM_FUNC(kputs)(file);
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kputchar(':');
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kputnum(line);
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PGM_FUNC(kputs)(PGM_STR(": "));
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}
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int PGM_FUNC(__bassert)(const char * PGM_ATTR cond, const char * PGM_ATTR file, int line)
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{
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klocation(file, line);
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PGM_FUNC(kputs)(PGM_STR("Assertion failed: "));
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PGM_FUNC(kputs)(cond);
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kputchar('\n');
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BREAKPOINT;
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return 1;
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}
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/*
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* Unfortunately, there's no way to get __func__ in
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* program memory, so we waste quite a lot of RAM in
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* AVR and other Harvard processors.
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*/
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void PGM_FUNC(__trace)(const char *name)
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{
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PGM_FUNC(kprintf)(PGM_STR("%s()\n"), name);
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}
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void PGM_FUNC(__tracemsg)(const char *name, const char * PGM_ATTR fmt, ...)
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{
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va_list ap;
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PGM_FUNC(kprintf)(PGM_STR("%s(): "), name);
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va_start(ap, fmt);
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PGM_FUNC(kvprintf)(fmt, ap);
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va_end(ap);
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kputchar('\n');
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}
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int PGM_FUNC(__invalid_ptr)(void *value, const char * PGM_ATTR name, const char * PGM_ATTR file, int line)
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{
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klocation(file, line);
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PGM_FUNC(kputs)(PGM_STR("Invalid ptr: "));
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PGM_FUNC(kputs)(name);
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#if CONFIG_PRINTF
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PGM_FUNC(kprintf)(PGM_STR(" = 0x%p\n"), value);
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#else
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(void)value;
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kputchar('\n');
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#endif
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return 1;
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}
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void __init_wall(long *wall, int size)
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{
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while(size--)
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*wall++ = WALL_VALUE;
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}
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int PGM_FUNC(__check_wall)(long *wall, int size, const char * PGM_ATTR name, const char * PGM_ATTR file, int line)
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{
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int i, fail = 0;
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for (i = 0; i < size; i++)
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{
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if (wall[i] != WALL_VALUE)
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{
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klocation(file, line);
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PGM_FUNC(kputs)(PGM_STR("Wall broken: "));
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PGM_FUNC(kputs)(name);
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#if CONFIG_PRINTF
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PGM_FUNC(kprintf)(PGM_STR("[%d] (0x%p) = 0x%lx\n"), i, wall + i, wall[i]);
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#else
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kputchar('\n');
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#endif
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fail = 1;
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}
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}
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return fail;
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}
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#if CONFIG_PRINTF
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/**
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* Dump binary data in hex
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*/
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void kdump(const void *_buf, size_t len)
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{
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const unsigned char *buf = (const unsigned char *)_buf;
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kprintf("Dumping buffer at addr [%p], %zu bytes", buf, len);
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size_t i=0;
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while (len--)
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{
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if ((i++ % 16) == 0)
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kputs("\n");
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kprintf("%02X ", *buf++);
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}
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kputchar('\n');
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}
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#endif /* CONFIG_PRINTF */
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#endif /* _DEBUG */
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