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nuttx-apps/nshlib/nsh_dbgcmds.c

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/****************************************************************************
* apps/nshlib/dbg_dbgcmds.c
*
* Copyright (C) 2008-2009, 2011-2012, 2015 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#if CONFIG_NFILE_DESCRIPTORS > 0
# include <fcntl.h>
#endif
#include "nsh.h"
#include "nsh_console.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
struct dbgmem_s
{
bool dm_write; /* true: perfrom write operation */
void *dm_addr; /* Address to access */
uint32_t dm_value; /* Value to write */
unsigned int dm_count; /* The number of bytes to access */
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: mem_parse
****************************************************************************/
static int mem_parse(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv,
struct dbgmem_s *mem)
{
char *pcvalue = strchr(argv[1], '=');
unsigned long lvalue = 0;
/* Check if we are writing a value */
if (pcvalue)
{
*pcvalue = '\0';
pcvalue++;
lvalue = (unsigned long)strtol(pcvalue, NULL, 16);
if (lvalue > 0xffffffffL)
{
return -EINVAL;
}
mem->dm_write = true;
mem->dm_value = (uint32_t)lvalue;
}
else
{
mem->dm_write = false;
mem->dm_value = 0;
}
/* Get the address to be accessed */
mem->dm_addr = (void*)((uintptr_t)strtol(argv[1], NULL, 16));
/* Get the number of bytes to access */
if (argc > 2)
{
mem->dm_count = (unsigned int)strtol(argv[2], NULL, 16);
}
else
{
mem->dm_count = 1;
}
return OK;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: cmd_mb
****************************************************************************/
#ifndef CONFIG_NSH_DISABLE_MB
int cmd_mb(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
struct dbgmem_s mem;
volatile uint8_t *ptr;
unsigned int i;
int ret;
ret = mem_parse(vtbl, argc, argv, &mem);
if (ret == 0)
{
/* Loop for the number of requested bytes */
for (i = 0, ptr = (volatile uint8_t*)mem.dm_addr; i < mem.dm_count; i++, ptr++)
{
/* Print the value at the address */
nsh_output(vtbl, " %p = 0x%02x", ptr, *ptr);
/* Are we supposed to write a value to this address? */
if (mem.dm_write)
{
/* Yes, was the supplied value within range? */
if (mem.dm_value > 0x000000ff)
{
nsh_output(vtbl, g_fmtargrange, argv[0]);
return ERROR;
}
/* Write the value and re-read the address so that we print its
* current value (if the address is a process address, then the
* value read might not necessarily be the value written).
*/
*ptr = (uint8_t)mem.dm_value;
nsh_output(vtbl, " -> 0x%02x", *ptr);
}
/* Make sure we end it with a newline */
nsh_output(vtbl, "\n", *ptr);
}
}
return ret;
}
#endif
/****************************************************************************
* Name: cmd_mh
****************************************************************************/
#ifndef CONFIG_NSH_DISABLE_MH
int cmd_mh(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
struct dbgmem_s mem;
volatile uint16_t *ptr;
unsigned int i;
int ret;
ret = mem_parse(vtbl, argc, argv, &mem);
if (ret == 0)
{
/* Loop for the number of requested bytes */
for (i = 0, ptr = (volatile uint16_t*)mem.dm_addr;
i < mem.dm_count;
i += 2, ptr++)
{
/* Print the value at the address */
nsh_output(vtbl, " %p = 0x%04x", ptr, *ptr);
/* Are we supposed to write a value to this address? */
if (mem.dm_write)
{
/* Yes, was the supplied value within range? */
if (mem.dm_value > 0x0000ffff)
{
nsh_output(vtbl, g_fmtargrange, argv[0]);
return ERROR;
}
/* Write the value and re-read the address so that we print its
* current value (if the address is a process address, then the
* value read might not necessarily be the value written).
*/
*ptr = (uint16_t)mem.dm_value;
nsh_output(vtbl, " -> 0x%04x", *ptr);
}
/* Make sure we end it with a newline */
nsh_output(vtbl, "\n", *ptr);
}
}
return ret;
}
#endif
/****************************************************************************
* Name: cmd_mw
****************************************************************************/
#ifndef CONFIG_NSH_DISABLE_MW
int cmd_mw(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
struct dbgmem_s mem;
volatile uint32_t *ptr;
unsigned int i;
int ret;
ret = mem_parse(vtbl, argc, argv, &mem);
if (ret == 0)
{
/* Loop for the number of requested bytes */
for (i = 0, ptr = (volatile uint32_t*)mem.dm_addr; i < mem.dm_count; i += 4, ptr++)
{
/* Print the value at the address */
nsh_output(vtbl, " %p = 0x%08x", ptr, *ptr);
/* Are we supposed to write a value to this address? */
if (mem.dm_write)
{
/* Write the value and re-read the address so that we print its
* current value (if the address is a process address, then the
* value read might not necessarily be the value written).
*/
*ptr = mem.dm_value;
nsh_output(vtbl, " -> 0x%08x", *ptr);
}
/* Make sure we end it with a newline */
nsh_output(vtbl, "\n", *ptr);
}
}
return ret;
}
#endif
/****************************************************************************
* Name: nsh_dumpbuffer
****************************************************************************/
void nsh_dumpbuffer(FAR struct nsh_vtbl_s *vtbl, const char *msg,
const uint8_t *buffer, ssize_t nbytes)
{
char line[128];
int ch;
int i;
int j;
nsh_output(vtbl, "%s:\n", msg);
for (i = 0; i < nbytes; i += 16)
{
sprintf(line, "%04x: ", i);
for ( j = 0; j < 16; j++)
{
if (i + j < nbytes)
{
sprintf(&line[strlen(line)], "%02x ", buffer[i+j] );
}
else
{
strcpy(&line[strlen(line)], " ");
}
}
for ( j = 0; j < 16; j++)
{
if (i + j < nbytes)
{
ch = buffer[i+j];
sprintf(&line[strlen(line)], "%c", ch >= 0x20 && ch <= 0x7e ? ch : '.');
}
}
nsh_output(vtbl, "%s\n", line);
}
}
/****************************************************************************
* Name: cmd_xd, hex dump of memory
****************************************************************************/
#ifndef CONFIG_NSH_DISABLE_XD
int cmd_xd(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
FAR char *addr;
FAR char *endptr;
int nbytes;
addr = (char*)((uintptr_t)strtol(argv[1], &endptr, 16));
if (argv[0][0] == '\0' || *endptr != '\0')
{
return ERROR;
}
nbytes = (int)strtol(argv[2], &endptr, 0);
if (argv[0][0] == '\0' || *endptr != '\0' || nbytes < 0)
{
return ERROR;
}
nsh_dumpbuffer(vtbl, "Hex dump", (uint8_t*)addr, nbytes);
return OK;
}
#endif
/****************************************************************************
* Name: cmd_hexdump, hex dump of files
****************************************************************************/
#if CONFIG_NFILE_DESCRIPTORS > 0
#ifndef CONFIG_NSH_DISABLE_HEXDUMP
int cmd_hexdump(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
FAR uint8_t *buffer;
char msg[32];
off_t position;
int fd;
int ret = OK;
#ifdef CONFIG_NSH_CMDOPT_HEXDUMP
off_t skip = 0;
off_t count = 0xfffffff;
off_t dumpbytes;
int x;
#endif
/* Open the file for reading */
fd = open(argv[1], O_RDONLY);
if (fd < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, "hexdump", "open", NSH_ERRNO);
return ERROR;
}
buffer = (FAR uint8_t *)malloc(IOBUFFERSIZE);
if(buffer == NULL)
{
nsh_output(vtbl, g_fmtcmdfailed, "hexdump", "malloc", NSH_ERRNO);
return ERROR;
}
#ifdef CONFIG_NSH_CMDOPT_HEXDUMP
for (x = 2; x < argc; x++)
{
if (strncmp(argv[x], "skip=", 5) == 0)
{
skip = atoi(&argv[x][5]);
}
else if (strncmp(argv[x], "count=", 6) == 0)
{
count = atoi(&argv[x][6]);
}
}
#endif
position = 0;
for (;;)
{
int nbytesread = read(fd, buffer, IOBUFFERSIZE);
/* Check for read errors */
if (nbytesread < 0)
{
int errval = errno;
nsh_output(vtbl, g_fmtcmdfailed, "hexdump", "read",
NSH_ERRNO_OF(errval));
ret = ERROR;
break;
}
else if (nbytesread > 0)
{
#ifdef CONFIG_NSH_CMDOPT_HEXDUMP
if (position < skip)
{
/* Skip bytes until we reach the skip point */
position += nbytesread;
if (position > skip)
{
dumpbytes = position - skip;
if (dumpbytes > count)
{
dumpbytes = count;
}
snprintf(msg, sizeof(msg), "%s at %08x", argv[1], skip);
nsh_dumpbuffer(vtbl, msg,
&buffer[nbytesread - (position-skip)],
dumpbytes);
if (count > dumpbytes)
{
count -= dumpbytes;
}
else
{
break;
}
}
/* Don't print if we are in skip mode */
continue;
}
/* Limit dumpbuffer to count if less than a full buffer needed */
if (nbytesread > count)
{
nbytesread = count;
}
#endif
snprintf(msg, sizeof(msg), "%s at %08x", argv[1], position);
nsh_dumpbuffer(vtbl, msg, buffer, nbytesread);
position += nbytesread;
#ifdef CONFIG_NSH_CMDOPT_HEXDUMP
if (count > nbytesread)
{
count -= nbytesread;
}
else
{
break;
}
#endif
}
else
{
break; // EOF
}
}
(void)close(fd);
free(buffer);
return ret;
}
#endif
#endif
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