diff options
Diffstat (limited to 'gdb/sparcl-tdep.c')
| -rw-r--r-- | gdb/sparcl-tdep.c | 869 |
1 files changed, 0 insertions, 869 deletions
diff --git a/gdb/sparcl-tdep.c b/gdb/sparcl-tdep.c deleted file mode 100644 index 87351f11c13..00000000000 --- a/gdb/sparcl-tdep.c +++ /dev/null @@ -1,869 +0,0 @@ -/* Target dependent code for the Fujitsu SPARClite for GDB, the GNU debugger. - Copyright 1994, 1995, 1996, 1998, 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 "gdbcore.h" -#include "breakpoint.h" -#include "target.h" -#include "serial.h" -#include "regcache.h" -#include <sys/types.h> - -#if (!defined(__GO32__) && !defined(_WIN32)) || defined(__CYGWIN32__) -#define HAVE_SOCKETS -#include <sys/time.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <netdb.h> -#endif - -static struct target_ops sparclite_ops; - -static char *remote_target_name = NULL; -static struct serial *remote_desc = NULL; -static int serial_flag; -#ifdef HAVE_SOCKETS -static int udp_fd = -1; -#endif - -static struct serial *open_tty (char *name); -static int send_resp (struct serial *desc, char c); -static void close_tty (void * ignore); -#ifdef HAVE_SOCKETS -static int recv_udp_buf (int fd, unsigned char *buf, int len, int timeout); -static int send_udp_buf (int fd, unsigned char *buf, int len); -#endif -static void sparclite_open (char *name, int from_tty); -static void sparclite_close (int quitting); -static void download (char *target_name, char *args, int from_tty, - void (*write_routine) (bfd * from_bfd, - asection * from_sec, - file_ptr from_addr, - bfd_vma to_addr, int len), - void (*start_routine) (bfd_vma entry)); -static void sparclite_serial_start (bfd_vma entry); -static void sparclite_serial_write (bfd * from_bfd, asection * from_sec, - file_ptr from_addr, - bfd_vma to_addr, int len); -#ifdef HAVE_SOCKETS -static unsigned short calc_checksum (unsigned char *buffer, int count); -static void sparclite_udp_start (bfd_vma entry); -static void sparclite_udp_write (bfd * from_bfd, asection * from_sec, - file_ptr from_addr, bfd_vma to_addr, - int len); -#endif -static void sparclite_download (char *filename, int from_tty); - -#define DDA2_SUP_ASI 0xb000000 -#define DDA1_SUP_ASI 0xb0000 - -#define DDA2_ASI_MASK 0xff000000 -#define DDA1_ASI_MASK 0xff0000 -#define DIA2_SUP_MODE 0x8000 -#define DIA1_SUP_MODE 0x4000 -#define DDA2_ENABLE 0x100 -#define DDA1_ENABLE 0x80 -#define DIA2_ENABLE 0x40 -#define DIA1_ENABLE 0x20 -#define DSINGLE_STEP 0x10 /* not used */ -#define DDV_TYPE_MASK 0xc -#define DDV_TYPE_LOAD 0x0 -#define DDV_TYPE_STORE 0x4 -#define DDV_TYPE_ACCESS 0x8 -#define DDV_TYPE_ALWAYS 0xc -#define DDV_COND 0x2 -#define DDV_MASK 0x1 - -int -sparclite_insert_watchpoint (CORE_ADDR addr, int len, int type) -{ - CORE_ADDR dcr; - - dcr = read_register (DCR_REGNUM); - - if (!(dcr & DDA1_ENABLE)) - { - write_register (DDA1_REGNUM, addr); - dcr &= ~(DDA1_ASI_MASK | DDV_TYPE_MASK); - dcr |= (DDA1_SUP_ASI | DDA1_ENABLE); - if (type == 1) - { - write_register (DDV1_REGNUM, 0); - write_register (DDV2_REGNUM, 0xffffffff); - dcr |= (DDV_TYPE_LOAD & (~DDV_COND & ~DDV_MASK)); - } - else if (type == 0) - { - write_register (DDV1_REGNUM, 0); - write_register (DDV2_REGNUM, 0xffffffff); - dcr |= (DDV_TYPE_STORE & (~DDV_COND & ~DDV_MASK)); - } - else - { - write_register (DDV1_REGNUM, 0); - write_register (DDV2_REGNUM, 0xffffffff); - dcr |= (DDV_TYPE_ACCESS); - } - write_register (DCR_REGNUM, dcr); - } - else if (!(dcr & DDA2_ENABLE)) - { - write_register (DDA2_REGNUM, addr); - dcr &= ~(DDA2_ASI_MASK & DDV_TYPE_MASK); - dcr |= (DDA2_SUP_ASI | DDA2_ENABLE); - if (type == 1) - { - write_register (DDV1_REGNUM, 0); - write_register (DDV2_REGNUM, 0xffffffff); - dcr |= (DDV_TYPE_LOAD & ~DDV_COND & ~DDV_MASK); - } - else if (type == 0) - { - write_register (DDV1_REGNUM, 0); - write_register (DDV2_REGNUM, 0xffffffff); - dcr |= (DDV_TYPE_STORE & ~DDV_COND & ~DDV_MASK); - } - else - { - write_register (DDV1_REGNUM, 0); - write_register (DDV2_REGNUM, 0xffffffff); - dcr |= (DDV_TYPE_ACCESS); - } - write_register (DCR_REGNUM, dcr); - } - else - return -1; - - return 0; -} - -int -sparclite_remove_watchpoint (CORE_ADDR addr, int len, int type) -{ - CORE_ADDR dcr, dda1, dda2; - - dcr = read_register (DCR_REGNUM); - dda1 = read_register (DDA1_REGNUM); - dda2 = read_register (DDA2_REGNUM); - - if ((dcr & DDA1_ENABLE) && addr == dda1) - write_register (DCR_REGNUM, (dcr & ~DDA1_ENABLE)); - else if ((dcr & DDA2_ENABLE) && addr == dda2) - write_register (DCR_REGNUM, (dcr & ~DDA2_ENABLE)); - else - return -1; - - return 0; -} - -int -sparclite_insert_hw_breakpoint (CORE_ADDR addr, int len) -{ - CORE_ADDR dcr; - - dcr = read_register (DCR_REGNUM); - - if (!(dcr & DIA1_ENABLE)) - { - write_register (DIA1_REGNUM, addr); - write_register (DCR_REGNUM, (dcr | DIA1_ENABLE | DIA1_SUP_MODE)); - } - else if (!(dcr & DIA2_ENABLE)) - { - write_register (DIA2_REGNUM, addr); - write_register (DCR_REGNUM, (dcr | DIA2_ENABLE | DIA2_SUP_MODE)); - } - else - return -1; - - return 0; -} - -int -sparclite_remove_hw_breakpoint (CORE_ADDR addr, int shadow) -{ - CORE_ADDR dcr, dia1, dia2; - - dcr = read_register (DCR_REGNUM); - dia1 = read_register (DIA1_REGNUM); - dia2 = read_register (DIA2_REGNUM); - - if ((dcr & DIA1_ENABLE) && addr == dia1) - write_register (DCR_REGNUM, (dcr & ~DIA1_ENABLE)); - else if ((dcr & DIA2_ENABLE) && addr == dia2) - write_register (DCR_REGNUM, (dcr & ~DIA2_ENABLE)); - else - return -1; - - return 0; -} - -int -sparclite_check_watch_resources (int type, int cnt, int ot) -{ - /* Watchpoints not supported on simulator. */ - if (strcmp (target_shortname, "sim") == 0) - return 0; - - if (type == bp_hardware_breakpoint) - { - if (TARGET_HW_BREAK_LIMIT == 0) - return 0; - else if (cnt <= TARGET_HW_BREAK_LIMIT) - return 1; - } - else - { - if (TARGET_HW_WATCH_LIMIT == 0) - return 0; - else if (ot) - return -1; - else if (cnt <= TARGET_HW_WATCH_LIMIT) - return 1; - } - return -1; -} - -CORE_ADDR -sparclite_stopped_data_address (void) -{ - CORE_ADDR dsr, dda1, dda2; - - dsr = read_register (DSR_REGNUM); - dda1 = read_register (DDA1_REGNUM); - dda2 = read_register (DDA2_REGNUM); - - if (dsr & 0x10) - return dda1; - else if (dsr & 0x20) - return dda2; - else - return 0; -} - -static struct serial * -open_tty (char *name) -{ - struct serial *desc; - - desc = serial_open (name); - if (!desc) - perror_with_name (name); - - if (baud_rate != -1) - { - if (serial_setbaudrate (desc, baud_rate)) - { - serial_close (desc); - perror_with_name (name); - } - } - - serial_raw (desc); - - serial_flush_input (desc); - - return desc; -} - -/* Read a single character from the remote end, masking it down to 7 bits. */ - -static int -readchar (struct serial *desc, int timeout) -{ - int ch; - char s[10]; - - ch = serial_readchar (desc, timeout); - - switch (ch) - { - case SERIAL_EOF: - error ("SPARClite remote connection closed"); - case SERIAL_ERROR: - perror_with_name ("SPARClite communication error"); - case SERIAL_TIMEOUT: - error ("SPARClite remote timeout"); - default: - if (remote_debug > 0) - { - sprintf (s, "[%02x]", ch & 0xff); - puts_debug ("read -->", s, "<--"); - } - return ch; - } -} - -static void -debug_serial_write (struct serial *desc, char *buf, int len) -{ - char s[10]; - - serial_write (desc, buf, len); - if (remote_debug > 0) - { - while (len-- > 0) - { - sprintf (s, "[%02x]", *buf & 0xff); - puts_debug ("Sent -->", s, "<--"); - buf++; - } - } -} - - -static int -send_resp (struct serial *desc, char c) -{ - debug_serial_write (desc, &c, 1); - return readchar (desc, remote_timeout); -} - -static void -close_tty (void *ignore) -{ - if (!remote_desc) - return; - - serial_close (remote_desc); - - remote_desc = NULL; -} - -#ifdef HAVE_SOCKETS -static int -recv_udp_buf (int fd, unsigned char *buf, int len, int timeout) -{ - int cc; - fd_set readfds; - - FD_ZERO (&readfds); - FD_SET (fd, &readfds); - - if (timeout >= 0) - { - struct timeval timebuf; - - timebuf.tv_sec = timeout; - timebuf.tv_usec = 0; - cc = select (fd + 1, &readfds, 0, 0, &timebuf); - } - else - cc = select (fd + 1, &readfds, 0, 0, 0); - - if (cc == 0) - return 0; - - if (cc != 1) - perror_with_name ("recv_udp_buf: Bad return value from select:"); - - cc = recv (fd, buf, len, 0); - - if (cc < 0) - perror_with_name ("Got an error from recv: "); -} - -static int -send_udp_buf (int fd, unsigned char *buf, int len) -{ - int cc; - - cc = send (fd, buf, len, 0); - - if (cc == len) - return; - - if (cc < 0) - perror_with_name ("Got an error from send: "); - - error ("Short count in send: tried %d, sent %d\n", len, cc); -} -#endif /* HAVE_SOCKETS */ - -static void -sparclite_open (char *name, int from_tty) -{ - struct cleanup *old_chain; - int c; - char *p; - - if (!name) - error ("You need to specify what device or hostname is associated with the SparcLite board."); - - target_preopen (from_tty); - - unpush_target (&sparclite_ops); - - if (remote_target_name) - xfree (remote_target_name); - - remote_target_name = xstrdup (name); - - /* We need a 'serial' or 'udp' keyword to disambiguate host:port, which can - mean either a serial port on a terminal server, or the IP address of a - SPARClite demo board. If there's no colon, then it pretty much has to be - a local device (except for DOS... grrmble) */ - - p = strchr (name, ' '); - - if (p) - { - *p++ = '\000'; - while ((*p != '\000') && isspace (*p)) - p++; - - if (strncmp (name, "serial", strlen (name)) == 0) - serial_flag = 1; - else if (strncmp (name, "udp", strlen (name)) == 0) - serial_flag = 0; - else - error ("Must specify either `serial' or `udp'."); - } - else - { - p = name; - - if (!strchr (name, ':')) - serial_flag = 1; /* No colon is unambiguous (local device) */ - else - error ("Usage: target sparclite serial /dev/ttyb\n\ -or: target sparclite udp host"); - } - - if (serial_flag) - { - remote_desc = open_tty (p); - - old_chain = make_cleanup (close_tty, 0 /*ignore*/); - - c = send_resp (remote_desc, 0x00); - - if (c != 0xaa) - error ("Unknown response (0x%x) from SparcLite. Try resetting the board.", - c); - - c = send_resp (remote_desc, 0x55); - - if (c != 0x55) - error ("Sparclite appears to be ill."); - } - else - { -#ifdef HAVE_SOCKETS - struct hostent *he; - struct sockaddr_in sockaddr; - unsigned char buffer[100]; - int cc; - - /* Setup the socket. Must be raw UDP. */ - - he = gethostbyname (p); - - if (!he) - error ("No such host %s.", p); - - udp_fd = socket (PF_INET, SOCK_DGRAM, 0); - - old_chain = make_cleanup (close, udp_fd); - - sockaddr.sin_family = PF_INET; - sockaddr.sin_port = htons (7000); - memcpy (&sockaddr.sin_addr.s_addr, he->h_addr, sizeof (struct in_addr)); - - if (connect (udp_fd, &sockaddr, sizeof (sockaddr))) - perror_with_name ("Connect failed"); - - buffer[0] = 0x5; - buffer[1] = 0; - - send_udp_buf (udp_fd, buffer, 2); /* Request version */ - cc = recv_udp_buf (udp_fd, buffer, sizeof (buffer), 5); /* Get response */ - if (cc == 0) - error ("SPARClite isn't responding."); - - if (cc < 3) - error ("SPARClite appears to be ill."); -#else - error ("UDP downloading is not supported for DOS hosts."); -#endif /* HAVE_SOCKETS */ - } - - printf_unfiltered ("[SPARClite appears to be alive]\n"); - - push_target (&sparclite_ops); - - discard_cleanups (old_chain); - - return; -} - -static void -sparclite_close (int quitting) -{ - if (serial_flag) - close_tty (0); -#ifdef HAVE_SOCKETS - else if (udp_fd != -1) - close (udp_fd); -#endif -} - -#define LOAD_ADDRESS 0x40000000 - -static void -download (char *target_name, char *args, int from_tty, - void (*write_routine) (bfd *from_bfd, asection *from_sec, - file_ptr from_addr, bfd_vma to_addr, int len), - void (*start_routine) (bfd_vma entry)) -{ - struct cleanup *old_chain; - asection *section; - bfd *pbfd; - bfd_vma entry; - int i; -#define WRITESIZE 1024 - char *filename; - int quiet; - int nostart; - - quiet = 0; - nostart = 0; - filename = NULL; - - while (*args != '\000') - { - char *arg; - - while (isspace (*args)) - args++; - - arg = args; - - while ((*args != '\000') && !isspace (*args)) - args++; - - if (*args != '\000') - *args++ = '\000'; - - if (*arg != '-') - filename = arg; - else if (strncmp (arg, "-quiet", strlen (arg)) == 0) - quiet = 1; - else if (strncmp (arg, "-nostart", strlen (arg)) == 0) - nostart = 1; - else - error ("unknown option `%s'", arg); - } - - if (!filename) - filename = get_exec_file (1); - - pbfd = bfd_openr (filename, gnutarget); - if (pbfd == NULL) - { - perror_with_name (filename); - return; - } - old_chain = make_cleanup_bfd_close (pbfd); - - if (!bfd_check_format (pbfd, bfd_object)) - error ("\"%s\" is not an object file: %s", filename, - bfd_errmsg (bfd_get_error ())); - - for (section = pbfd->sections; section; section = section->next) - { - if (bfd_get_section_flags (pbfd, section) & SEC_LOAD) - { - bfd_vma section_address; - bfd_size_type section_size; - file_ptr fptr; - const char *section_name; - - section_name = bfd_get_section_name (pbfd, section); - - section_address = bfd_get_section_vma (pbfd, section); - - /* Adjust sections from a.out files, since they don't - carry their addresses with. */ - if (bfd_get_flavour (pbfd) == bfd_target_aout_flavour) - { - if (strcmp (section_name, ".text") == 0) - section_address = bfd_get_start_address (pbfd); - else if (strcmp (section_name, ".data") == 0) - { - /* Read the first 8 bytes of the data section. - There should be the string 'DaTa' followed by - a word containing the actual section address. */ - struct data_marker - { - char signature[4]; /* 'DaTa' */ - unsigned char sdata[4]; /* &sdata */ - } - marker; - bfd_get_section_contents (pbfd, section, &marker, 0, - sizeof (marker)); - if (strncmp (marker.signature, "DaTa", 4) == 0) - { - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - section_address = bfd_getb32 (marker.sdata); - else - section_address = bfd_getl32 (marker.sdata); - } - } - } - - section_size = bfd_get_section_size_before_reloc (section); - - if (!quiet) - printf_filtered ("[Loading section %s at 0x%x (%d bytes)]\n", - bfd_get_section_name (pbfd, section), - section_address, - section_size); - - fptr = 0; - while (section_size > 0) - { - int count; - static char inds[] = "|/-\\"; - static int k = 0; - - QUIT; - - count = min (section_size, WRITESIZE); - - write_routine (pbfd, section, fptr, section_address, count); - - if (!quiet) - { - printf_unfiltered ("\r%c", inds[k++ % 4]); - gdb_flush (gdb_stdout); - } - - section_address += count; - fptr += count; - section_size -= count; - } - } - } - - if (!nostart) - { - entry = bfd_get_start_address (pbfd); - - if (!quiet) - printf_unfiltered ("[Starting %s at 0x%x]\n", filename, entry); - - start_routine (entry); - } - - do_cleanups (old_chain); -} - -static void -sparclite_serial_start (bfd_vma entry) -{ - char buffer[5]; - int i; - - buffer[0] = 0x03; - store_unsigned_integer (buffer + 1, 4, entry); - - debug_serial_write (remote_desc, buffer, 1 + 4); - i = readchar (remote_desc, remote_timeout); - if (i != 0x55) - error ("Can't start SparcLite. Error code %d\n", i); -} - -static void -sparclite_serial_write (bfd *from_bfd, asection *from_sec, file_ptr from_addr, - bfd_vma to_addr, int len) -{ - char buffer[4 + 4 + WRITESIZE]; /* addr + len + data */ - unsigned char checksum; - int i; - - store_unsigned_integer (buffer, 4, to_addr); /* Address */ - store_unsigned_integer (buffer + 4, 4, len); /* Length */ - - bfd_get_section_contents (from_bfd, from_sec, buffer + 8, from_addr, len); - - checksum = 0; - for (i = 0; i < len; i++) - checksum += buffer[8 + i]; - - i = send_resp (remote_desc, 0x01); - - if (i != 0x5a) - error ("Bad response from load command (0x%x)", i); - - debug_serial_write (remote_desc, buffer, 4 + 4 + len); - i = readchar (remote_desc, remote_timeout); - - if (i != checksum) - error ("Bad checksum from load command (0x%x)", i); -} - -#ifdef HAVE_SOCKETS - -static unsigned short -calc_checksum (unsigned char *buffer, int count) -{ - unsigned short checksum; - - checksum = 0; - for (; count > 0; count -= 2, buffer += 2) - checksum += (*buffer << 8) | *(buffer + 1); - - if (count != 0) - checksum += *buffer << 8; - - return checksum; -} - -static void -sparclite_udp_start (bfd_vma entry) -{ - unsigned char buffer[6]; - int i; - - buffer[0] = 0x3; - buffer[1] = 0; - buffer[2] = entry >> 24; - buffer[3] = entry >> 16; - buffer[4] = entry >> 8; - buffer[5] = entry; - - send_udp_buf (udp_fd, buffer, 6); /* Send start addr */ - i = recv_udp_buf (udp_fd, buffer, sizeof (buffer), -1); /* Get response */ - - if (i < 1 || buffer[0] != 0x55) - error ("Failed to take start address."); -} - -static void -sparclite_udp_write (bfd *from_bfd, asection *from_sec, file_ptr from_addr, - bfd_vma to_addr, int len) -{ - unsigned char buffer[2000]; - unsigned short checksum; - static int pkt_num = 0; - static unsigned long old_addr = -1; - int i; - - while (1) - { - if (to_addr != old_addr) - { - buffer[0] = 0x1; /* Load command */ - buffer[1] = 0x1; /* Loading address */ - buffer[2] = to_addr >> 24; - buffer[3] = to_addr >> 16; - buffer[4] = to_addr >> 8; - buffer[5] = to_addr; - - checksum = 0; - for (i = 0; i < 6; i++) - checksum += buffer[i]; - checksum &= 0xff; - - send_udp_buf (udp_fd, buffer, 6); - i = recv_udp_buf (udp_fd, buffer, sizeof buffer, -1); - - if (i < 1) - error ("Got back short checksum for load addr."); - - if (checksum != buffer[0]) - error ("Got back bad checksum for load addr."); - - pkt_num = 0; /* Load addr resets packet seq # */ - old_addr = to_addr; - } - - bfd_get_section_contents (from_bfd, from_sec, buffer + 6, from_addr, - len); - - checksum = calc_checksum (buffer + 6, len); - - buffer[0] = 0x1; /* Load command */ - buffer[1] = 0x2; /* Loading data */ - buffer[2] = pkt_num >> 8; - buffer[3] = pkt_num; - buffer[4] = checksum >> 8; - buffer[5] = checksum; - - send_udp_buf (udp_fd, buffer, len + 6); - i = recv_udp_buf (udp_fd, buffer, sizeof buffer, 3); - - if (i == 0) - { - fprintf_unfiltered (gdb_stderr, "send_data: timeout sending %d bytes to address 0x%x retrying\n", len, to_addr); - continue; - } - - if (buffer[0] != 0xff) - error ("Got back bad response for load data."); - - old_addr += len; - pkt_num++; - - return; - } -} - -#endif /* HAVE_SOCKETS */ - -static void -sparclite_download (char *filename, int from_tty) -{ - if (!serial_flag) -#ifdef HAVE_SOCKETS - download (remote_target_name, filename, from_tty, sparclite_udp_write, - sparclite_udp_start); -#else - internal_error (__FILE__, __LINE__, "failed internal consistency check"); /* sparclite_open should prevent this! */ -#endif - else - download (remote_target_name, filename, from_tty, sparclite_serial_write, - sparclite_serial_start); -} - -/* Set up the sparclite target vector. */ - -static void -init_sparclite_ops (void) -{ - sparclite_ops.to_shortname = "sparclite"; - sparclite_ops.to_longname = "SPARClite download target"; - sparclite_ops.to_doc = "Download to a remote SPARClite target board via serial of UDP.\n\ -Specify the device it is connected to (e.g. /dev/ttya)."; - sparclite_ops.to_open = sparclite_open; - sparclite_ops.to_close = sparclite_close; - sparclite_ops.to_load = sparclite_download; - sparclite_ops.to_stratum = download_stratum; - sparclite_ops.to_magic = OPS_MAGIC; -} - -void -_initialize_sparcl_tdep (void) -{ - init_sparclite_ops (); - add_target (&sparclite_ops); -} |