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-rw-r--r--gdb/dsrec.c311
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diff --git a/gdb/dsrec.c b/gdb/dsrec.c
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-/* S-record download support for GDB, the GNU debugger.
- Copyright 1995, 1996, 1997, 1999, 2000, 2001
- Free Software Foundation, Inc.
-
- This file is part of GDB.
-
- 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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include "defs.h"
-#include "serial.h"
-#include "srec.h"
-#include <time.h>
-
-extern void report_transfer_performance (unsigned long, time_t, time_t);
-
-extern int remote_debug;
-
-static int make_srec (char *srec, CORE_ADDR targ_addr, bfd * abfd,
- asection * sect, int sectoff, int *maxrecsize,
- int flags);
-
-/* Download an executable by converting it to S records. DESC is a
- `struct serial *' to send the data to. FILE is the name of the
- file to be loaded. LOAD_OFFSET is the offset into memory to load
- data into. It is usually specified by the user and is useful with
- the a.out file format. MAXRECSIZE is the length in chars of the
- largest S-record the host can accomodate. This is measured from
- the starting `S' to the last char of the checksum. FLAGS is
- various random flags, and HASHMARK is non-zero to cause a `#' to be
- printed out for each record loaded. WAITACK, if non-NULL, is a
- function that waits for an acknowledgement after each S-record, and
- returns non-zero if the ack is read correctly. */
-
-void
-load_srec (struct serial *desc, const char *file, bfd_vma load_offset,
- int maxrecsize,
- int flags, int hashmark, int (*waitack) (void))
-{
- bfd *abfd;
- asection *s;
- char *srec;
- int i;
- int reclen;
- time_t start_time, end_time;
- unsigned long data_count = 0;
-
- srec = (char *) alloca (maxrecsize + 1);
-
- abfd = bfd_openr (file, 0);
- if (!abfd)
- {
- printf_filtered ("Unable to open file %s\n", file);
- return;
- }
-
- if (bfd_check_format (abfd, bfd_object) == 0)
- {
- printf_filtered ("File is not an object file\n");
- return;
- }
-
- start_time = time (NULL);
-
- /* Write a type 0 header record. no data for a type 0, and there
- is no data, so len is 0. */
-
- reclen = maxrecsize;
- make_srec (srec, 0, NULL, (asection *) 1, 0, &reclen, flags);
- if (remote_debug)
- {
- srec[reclen] = '\0';
- puts_debug ("sent -->", srec, "<--");
- }
- serial_write (desc, srec, reclen);
-
- for (s = abfd->sections; s; s = s->next)
- if (s->flags & SEC_LOAD)
- {
- int numbytes;
- bfd_vma addr = bfd_get_section_vma (abfd, s) + load_offset;
- bfd_size_type size = bfd_get_section_size_before_reloc (s);
- char *section_name = (char *) bfd_get_section_name (abfd, s);
- /* Both GDB and BFD have mechanisms for printing addresses.
- In the below, GDB's is used so that the address is
- consistent with the rest of GDB. BFD's printf_vma() could
- have also been used. cagney 1999-09-01 */
- printf_filtered ("%s\t: 0x%s .. 0x%s ",
- section_name,
- paddr (addr),
- paddr (addr + size));
- gdb_flush (gdb_stdout);
-
- data_count += size;
-
- for (i = 0; i < size; i += numbytes)
- {
- reclen = maxrecsize;
- numbytes = make_srec (srec, (CORE_ADDR) (addr + i), abfd, s,
- i, &reclen, flags);
-
- if (remote_debug)
- {
- srec[reclen] = '\0';
- puts_debug ("sent -->", srec, "<--");
- }
-
- /* Repeatedly send the S-record until a good
- acknowledgement is sent back. */
- do
- {
- serial_write (desc, srec, reclen);
- if (ui_load_progress_hook)
- if (ui_load_progress_hook (section_name, (unsigned long) i))
- error ("Canceled the download");
- }
- while (waitack != NULL && !waitack ());
-
- if (hashmark)
- {
- putchar_unfiltered ('#');
- gdb_flush (gdb_stdout);
- }
- } /* Per-packet (or S-record) loop */
-
- if (ui_load_progress_hook)
- if (ui_load_progress_hook (section_name, (unsigned long) i))
- error ("Canceled the download");
- putchar_unfiltered ('\n');
- }
-
- if (hashmark)
- putchar_unfiltered ('\n');
-
- end_time = time (NULL);
-
- /* Write a terminator record. */
-
- reclen = maxrecsize;
- make_srec (srec, abfd->start_address, NULL, NULL, 0, &reclen, flags);
-
- if (remote_debug)
- {
- srec[reclen] = '\0';
- puts_debug ("sent -->", srec, "<--");
- }
-
- serial_write (desc, srec, reclen);
-
- /* Some monitors need these to wake up properly. (Which ones? -sts) */
- serial_write (desc, "\r\r", 2);
- if (remote_debug)
- puts_debug ("sent -->", "\r\r", "<---");
-
- serial_flush_input (desc);
-
- report_transfer_performance (data_count, start_time, end_time);
-}
-
-/*
- * make_srec -- make an srecord. This writes each line, one at a
- * time, each with it's own header and trailer line.
- * An srecord looks like this:
- *
- * byte count-+ address
- * start ---+ | | data +- checksum
- * | | | |
- * S01000006F6B692D746573742E73726563E4
- * S315000448600000000000000000FC00005900000000E9
- * S31A0004000023C1400037DE00F023604000377B009020825000348D
- * S30B0004485A0000000000004E
- * S70500040000F6
- *
- * S<type><length><address><data><checksum>
- *
- * Where
- * - length
- * is the number of bytes following upto the checksum. Note that
- * this is not the number of chars following, since it takes two
- * chars to represent a byte.
- * - type
- * is one of:
- * 0) header record
- * 1) two byte address data record
- * 2) three byte address data record
- * 3) four byte address data record
- * 7) four byte address termination record
- * 8) three byte address termination record
- * 9) two byte address termination record
- *
- * - address
- * is the start address of the data following, or in the case of
- * a termination record, the start address of the image
- * - data
- * is the data.
- * - checksum
- * is the sum of all the raw byte data in the record, from the length
- * upwards, modulo 256 and subtracted from 255.
- *
- * This routine returns the length of the S-record.
- *
- */
-
-static int
-make_srec (char *srec, CORE_ADDR targ_addr, bfd *abfd, asection *sect,
- int sectoff, int *maxrecsize, int flags)
-{
- unsigned char checksum;
- int tmp;
- const static char hextab[] = "0123456789ABCDEF";
- const static char data_code_table[] = "123";
- const static char term_code_table[] = "987";
- const static char header_code_table[] = "000";
- const static char *formats[] =
- {"S%c%02X%04X",
- "S%c%02X%06X",
- "S%c%02X%08X"};
- char const *code_table;
- int addr_size;
- int payload_size;
- char *binbuf;
- char *p;
-
- if (sect)
- {
- tmp = flags; /* Data or header record */
- code_table = abfd ? data_code_table : header_code_table;
- binbuf = alloca (*maxrecsize / 2);
- }
- else
- {
- tmp = flags >> SREC_TERM_SHIFT; /* Term record */
- code_table = term_code_table;
- binbuf = NULL;
- }
-
- if ((tmp & SREC_2_BYTE_ADDR) && (targ_addr <= 0xffff))
- addr_size = 2;
- else if ((tmp & SREC_3_BYTE_ADDR) && (targ_addr <= 0xffffff))
- addr_size = 3;
- else if (tmp & SREC_4_BYTE_ADDR)
- addr_size = 4;
- else
- internal_error (__FILE__, __LINE__,
- "make_srec: Bad address (0x%s), or bad flags (0x%x).",
- paddr (targ_addr), flags);
-
- /* Now that we know the address size, we can figure out how much
- data this record can hold. */
-
- if (sect && abfd)
- {
- payload_size = (*maxrecsize - (1 + 1 + 2 + addr_size * 2 + 2)) / 2;
- payload_size = min (payload_size, sect->_raw_size - sectoff);
-
- bfd_get_section_contents (abfd, sect, binbuf, sectoff, payload_size);
- }
- else
- payload_size = 0; /* Term or header packets have no payload */
-
- /* Output the header. */
-
- sprintf (srec, formats[addr_size - 2], code_table[addr_size - 2],
- addr_size + payload_size + 1, (int) targ_addr);
-
- /* Note that the checksum is calculated on the raw data, not the
- hexified data. It includes the length, address and the data
- portions of the packet. */
-
- checksum = 0;
-
- checksum += (payload_size + addr_size + 1 /* Packet length */
- + (targ_addr & 0xff) /* Address... */
- + ((targ_addr >> 8) & 0xff)
- + ((targ_addr >> 16) & 0xff)
- + ((targ_addr >> 24) & 0xff));
-
- p = srec + 1 + 1 + 2 + addr_size * 2;
-
- /* Build the Srecord. */
- for (tmp = 0; tmp < payload_size; tmp++)
- {
- unsigned char k;
-
- k = binbuf[tmp];
- *p++ = hextab[k >> 4];
- *p++ = hextab[k & 0xf];
- checksum += k;
- }
-
- checksum = ~checksum;
-
- *p++ = hextab[checksum >> 4];
- *p++ = hextab[checksum & 0xf];
- *p++ = '\r';
-
- *maxrecsize = p - srec;
- return payload_size;
-}