a7f6f9ed4d
* sparclet-rom.c: Remove includes of Unix system files.
Add function "sparclet_supply_register" so that parse_register_dump
will not seg-fault by calling a null function pointer.
Remove XMODEM support (unfinished work?).
Remove flag "MO_HANDLE_NL", so monitor's output can be read by humans.
Add fill command.
Remove colon from getreg.resp_delim so PSR register will work.
Remove pointer to sparclet_load (downloading SREC's doesn't work).
Null out local register names for %g0, all %cc and all %asr regs,
since the monitor can't report them. Will return zero instead.
* sparclet-stub.c: New -- remote protocol support for sparclet CPU.
* config/sparc/tm-sparclet.h: Re-arrange REGISTER_NAMES:
Add back %g0 and %psr, add %cc coprocessor regs, add %asr regs.
Adjust NUM_REGS and REGISTER_BYTES accordingly
310 lines
9.3 KiB
C
310 lines
9.3 KiB
C
/* Remote target glue for the SPARC Sparclet ROM monitor.
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Copyright 1995, 1996 Free Software Foundation, Inc.
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This file is part of GDB.
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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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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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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "gdbcore.h"
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#include "target.h"
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#include "monitor.h"
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#include "serial.h"
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#include "srec.h"
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#include "symtab.h"
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#include "symfile.h" /* for generic_load */
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#if 0 /* Do we really need all this Unix stuff here? */
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#if !defined (HAVE_TERMIOS) && !defined (HAVE_TERMIO) && !defined (HAVE_SGTTY)
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#define HAVE_SGTTY
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#endif
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#ifdef HAVE_SGTTY
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#include <sys/ioctl.h>
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#endif
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#include <sys/types.h> /* Needed by file.h on Sys V */
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#include <sys/file.h>
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#include <signal.h>
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#include <sys/stat.h>
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#endif /* Unix stuff */
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#define USE_GENERIC_LOAD
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#define USE_SW_BREAKS
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static struct target_ops sparclet_ops;
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static void sparclet_open PARAMS ((char *args, int from_tty));
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#ifdef USE_GENERIC_LOAD
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static void
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sparclet_load_gen (filename, from_tty)
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char *filename;
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int from_tty;
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{
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extern int inferior_pid;
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generic_load (filename, from_tty);
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/* Finally, make the PC point at the start address */
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if (exec_bfd)
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write_pc (bfd_get_start_address (exec_bfd));
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inferior_pid = 0; /* No process now */
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}
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#endif
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#ifdef USE_XMODEM_LOAD
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static void
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sparclet_xmodem_load (desc, file, hashmark)
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serial_t desc;
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char *file;
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int hashmark;
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{
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bfd *abfd;
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asection *s;
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char *buffer;
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int i;
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buffer = alloca (XMODEM_PACKETSIZE);
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abfd = bfd_openr (file, 0);
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if (!abfd)
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{
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printf_filtered ("Unable to open file %s\n", file);
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return;
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}
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if (bfd_check_format (abfd, bfd_object) == 0)
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{
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printf_filtered ("File is not an object file\n");
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return;
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}
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for (s = abfd->sections; s; s = s->next)
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if (s->flags & SEC_LOAD)
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{
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bfd_size_type section_size;
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printf_filtered ("%s\t: 0x%4x .. 0x%4x ", s->name, s->vma,
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s->vma + s->_raw_size);
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gdb_flush (gdb_stdout);
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monitor_printf (current_monitor->load, s->vma);
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if (current_monitor->loadresp)
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monitor_expect (current_monitor->loadresp, NULL, 0);
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xmodem_init_xfer (desc);
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section_size = bfd_section_size (abfd, s);
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for (i = 0; i < section_size; i += XMODEM_DATASIZE)
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{
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int numbytes;
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numbytes = min (XMODEM_DATASIZE, section_size - i);
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bfd_get_section_contents (abfd, s, buffer + XMODEM_DATAOFFSET, i,
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numbytes);
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xmodem_send_packet (desc, buffer, numbytes, hashmark);
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if (hashmark)
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{
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putchar_unfiltered ('#');
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gdb_flush (gdb_stdout);
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}
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} /* Per-packet (or S-record) loop */
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xmodem_finish_xfer (desc);
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monitor_expect_prompt (NULL, 0);
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putchar_unfiltered ('\n');
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} /* Loadable sections */
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if (hashmark)
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putchar_unfiltered ('\n');
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}
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static void
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sparclet_load (desc, file, hashmark)
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serial_t desc;
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char *file;
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int hashmark;
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{
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???
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}
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#endif /* USE_XMODEM_LOAD */
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/* This array of registers need to match the indexes used by GDB.
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This exists because the various ROM monitors use different strings
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than does GDB, and don't necessarily support all the registers
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either. So, typing "info reg sp" becomes a "r30". */
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/*PSR 0x00000080 impl ver icc AW LE EE EC EF PIL S PS ET CWP WIM
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0x0 0x0 0x0 0 0 0 0 0 0x0 1 0 0 0x00 0x2
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0000010
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INS LOCALS OUTS GLOBALS
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0 0x00000000 0x00000000 0x00000000 0x00000000
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1 0x00000000 0x00000000 0x00000000 0x00000000
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2 0x00000000 0x00000000 0x00000000 0x00000000
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3 0x00000000 0x00000000 0x00000000 0x00000000
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4 0x00000000 0x00000000 0x00000000 0x00000000
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5 0x00000000 0x00001000 0x00000000 0x00000000
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6 0x00000000 0x00000000 0x123f0000 0x00000000
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7 0x00000000 0x00000000 0x00000000 0x00000000
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pc: 0x12010000 0x00000000 unimp
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npc: 0x12010004 0x00001000 unimp 0x1000
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tbr: 0x00000000
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y: 0x00000000
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*/
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/* these correspond to the offsets from tm-* files from config directories */
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/* is wim part of psr?? */
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/* monitor wants lower case */
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static char *sparclet_regnames[NUM_REGS] = REGISTER_NAMES;
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/* Function: sparclet_supply_register
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Just returns with no action.
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This function is required, because parse_register_dump (monitor.c)
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expects to be able to call it. If we don't supply something, it will
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call a null pointer and core-dump. Since this function does not
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actually do anything, GDB will request the registers individually. */
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static void
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sparclet_supply_register (regname, regnamelen, val, vallen)
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char *regname;
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int regnamelen;
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char *val;
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int vallen;
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{
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return;
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}
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/* Define the monitor command strings. Since these are passed directly
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through to a printf style function, we may include formatting
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strings. We also need a CR or LF on the end. */
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/* need to pause the monitor for timing reasons, so slow it down */
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static char *sparclet_inits[] = {"\n\r\r\n", NULL};
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static struct monitor_ops sparclet_cmds =
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{
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MO_CLR_BREAK_USES_ADDR |
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MO_HEX_PREFIX |
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MO_NO_ECHO_ON_OPEN |
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MO_NO_ECHO_ON_SETMEM |
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MO_RUN_FIRST_TIME |
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MO_GETMEM_READ_SINGLE, /* flags */
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sparclet_inits, /* Init strings */
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"cont\r", /* continue command */
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"step\r", /* single step */
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"\r", /* break interrupts the program */
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"+bp %x\r", /* set a breakpoint */
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/* can't use "br" because only 2 hw bps are supported */
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"-bp %x\r", /* clear a breakpoint */
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"-bp\r", /* clear all breakpoints */
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"fill %x -n %x -v %x -b\r", /* fill (start length val) */
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/* can't use "fi" because it takes words, not bytes */
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{
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/* ex [addr] [-n count] [-b|-s|-l] default: ex cur -n 1 -b */
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"ex %x -b\r%x\rq\r", /* setmem.cmdb (addr, value) */
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"ex %x -s\r%x\rq\r", /* setmem.cmdw (addr, value) */
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"ex %x -l\r%x\rq\r", /* setmem.cmdl (addr, value) */
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NULL, /* setmem.cmdll (addr, value) */
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NULL, /*": " */ /* setmem.resp_delim */
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NULL, /*"? " */ /* setmem.term */
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NULL, /*"q\r" */ /* setmem.term_cmd */
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},
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{
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/* since the parsing of multiple bytes is difficult due to
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interspersed addresses, we'll only read 1 value at a time,
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even tho these can handle a count */
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/* we can use -n to set count to read, but may have to parse? */
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"ex %x -n 1 -b\r", /* getmem.cmdb (addr, #bytes) */
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"ex %x -n 1 -s\r", /* getmem.cmdw (addr, #swords) */
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"ex %x -n 1 -l\r", /* getmem.cmdl (addr, #words) */
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NULL, /* getmem.cmdll (addr, #dwords) */
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": ", /* getmem.resp_delim */
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NULL, /* getmem.term */
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NULL, /* getmem.term_cmd */
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},
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{
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"reg %s 0x%x\r", /* setreg.cmd (name, value) */
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NULL, /* setreg.resp_delim */
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NULL, /* setreg.term */
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NULL /* setreg.term_cmd */
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},
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{
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"reg %s\r", /* getreg.cmd (name) */
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" ", /* getreg.resp_delim */
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NULL, /* getreg.term */
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NULL, /* getreg.term_cmd */
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},
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"reg\r", /* dump_registers */
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"\\(\\w+\\)=\\([0-9a-fA-F]+\\)", /* register_pattern */
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sparclet_supply_register, /* supply_register */
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#ifdef USE_GENERIC_LOAD
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NULL, /* load_routine (defaults to SRECs) */
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NULL, /* download command */
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NULL, /* load response */
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#else
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NULL, /* load_routine (defaults to SRECs) */
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/* load [c|a] [s | f | r [addr count]] */
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"load c s\r", /* download command (srecs on console) */
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"load: ", /* load response */
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#endif
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"monitor>", /* monitor command prompt */
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/* yikes! gdb core dumps without this delimitor!! */
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"\r", /* end-of-command delimitor */
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NULL, /* optional command terminator */
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&sparclet_ops, /* target operations */
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SERIAL_1_STOPBITS, /* number of stop bits */
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sparclet_regnames, /* registers names */
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MONITOR_OPS_MAGIC /* magic */
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};
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static void
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sparclet_open (args, from_tty)
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char *args;
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int from_tty;
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{
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monitor_open (args, &sparclet_cmds, from_tty);
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}
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void
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_initialize_sparclet ()
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{
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int i;
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for (i = 0; i < NUM_REGS; i++)
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if (sparclet_regnames[i][0] == 'c' ||
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sparclet_regnames[i][0] == 'a')
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sparclet_regnames[i] = 0; /* mon can't report c* or a* regs */
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sparclet_regnames[0] = 0; /* mon won't report %G0 */
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init_monitor_ops (&sparclet_ops);
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sparclet_ops.to_shortname = "sparclet"; /* for the target command */
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sparclet_ops.to_longname = "SPARC Sparclet monitor";
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#ifdef USE_GENERIC_LOAD
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sparclet_ops.to_load = sparclet_load_gen; /* FIXME - should go back and try "do" */
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#endif
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#ifdef USE_SW_BREAKS
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/* use SW breaks; target only supports 2 HW breakpoints */
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sparclet_ops.to_insert_breakpoint = memory_insert_breakpoint;
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sparclet_ops.to_remove_breakpoint = memory_remove_breakpoint;
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#endif
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sparclet_ops.to_doc =
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"Use a board running the Sparclet debug monitor.\n\
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Specify the serial device it is connected to (e.g. /dev/ttya).";
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sparclet_ops.to_open = sparclet_open;
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add_target (&sparclet_ops);
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}
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