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-rw-r--r--gdb/sparclet-rom.c279
1 files changed, 279 insertions, 0 deletions
diff --git a/gdb/sparclet-rom.c b/gdb/sparclet-rom.c
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+/* Remote target glue for the SPARC Sparclet ROM monitor.
+ Copyright 1995, 1996 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 "target.h"
+#include "monitor.h"
+#include "serial.h"
+#include "srec.h"
+#include "symtab.h"
+#include "symfile.h" /* for generic_load */
+
+#if !defined (HAVE_TERMIOS) && !defined (HAVE_TERMIO) && !defined (HAVE_SGTTY)
+#define HAVE_SGTTY
+#endif
+
+#ifdef HAVE_SGTTY
+#include <sys/ioctl.h>
+#endif
+
+#include <sys/types.h> /* Needed by file.h on Sys V */
+#include <sys/file.h>
+#include <signal.h>
+#include <sys/stat.h>
+
+#define USE_GENERIC_LOAD
+#define USE_SW_BREAKS
+
+static struct target_ops sparclet_ops;
+
+static void sparclet_open PARAMS ((char *args, int from_tty));
+
+#ifdef USE_GENERIC_LOAD
+
+static void
+sparclet_load_gen (filename, from_tty)
+ char *filename;
+ int from_tty;
+{
+ extern int inferior_pid;
+
+ generic_load (filename, from_tty);
+ /* Finally, make the PC point at the start address */
+ if (exec_bfd)
+ write_pc (bfd_get_start_address (exec_bfd));
+
+ inferior_pid = 0; /* No process now */
+}
+
+#else
+
+static void
+sparclet_xmodem_load (desc, file, hashmark)
+ serial_t desc;
+ char *file;
+ int hashmark;
+{
+ bfd *abfd;
+ asection *s;
+ char *buffer;
+ int i;
+
+ buffer = alloca (XMODEM_PACKETSIZE);
+ 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;
+ }
+ for (s = abfd->sections; s; s = s->next)
+ if (s->flags & SEC_LOAD)
+ {
+ bfd_size_type section_size;
+ printf_filtered ("%s\t: 0x%4x .. 0x%4x ", s->name, s->vma,
+ s->vma + s->_raw_size);
+ gdb_flush (gdb_stdout);
+ monitor_printf (current_monitor->load, s->vma);
+ if (current_monitor->loadresp)
+ monitor_expect (current_monitor->loadresp, NULL, 0);
+ xmodem_init_xfer (desc);
+ section_size = bfd_section_size (abfd, s);
+ for (i = 0; i < section_size; i += XMODEM_DATASIZE)
+ {
+ int numbytes;
+ numbytes = min (XMODEM_DATASIZE, section_size - i);
+ bfd_get_section_contents (abfd, s, buffer + XMODEM_DATAOFFSET, i,
+ numbytes);
+ xmodem_send_packet (desc, buffer, numbytes, hashmark);
+ if (hashmark)
+ {
+ putchar_unfiltered ('#');
+ gdb_flush (gdb_stdout);
+ }
+ } /* Per-packet (or S-record) loop */
+ xmodem_finish_xfer (desc);
+ monitor_expect_prompt (NULL, 0);
+ putchar_unfiltered ('\n');
+ } /* Loadable sections */
+ if (hashmark)
+ putchar_unfiltered ('\n');
+}
+
+static void
+sparclet_load (desc, file, hashmark)
+ serial_t desc;
+ char *file;
+ int hashmark;
+{
+???
+}
+#endif /* USE_GENERIC_LOAD */
+
+/* This array of registers need to match the indexes used by GDB.
+ This exists because the various ROM monitors use different strings
+ than does GDB, and don't necessarily support all the registers
+ either. So, typing "info reg sp" becomes a "r30". */
+
+/*PSR 0x00000080 impl ver icc AW LE EE EC EF PIL S PS ET CWP WIM
+ 0x0 0x0 0x0 0 0 0 0 0 0x0 1 0 0 0x00 0x2
+ 0000010
+ INS LOCALS OUTS GLOBALS
+ 0 0x00000000 0x00000000 0x00000000 0x00000000
+ 1 0x00000000 0x00000000 0x00000000 0x00000000
+ 2 0x00000000 0x00000000 0x00000000 0x00000000
+ 3 0x00000000 0x00000000 0x00000000 0x00000000
+ 4 0x00000000 0x00000000 0x00000000 0x00000000
+ 5 0x00000000 0x00001000 0x00000000 0x00000000
+ 6 0x00000000 0x00000000 0x123f0000 0x00000000
+ 7 0x00000000 0x00000000 0x00000000 0x00000000
+pc: 0x12010000 0x00000000 unimp
+npc: 0x12010004 0x00001000 unimp 0x1000
+tbr: 0x00000000
+y: 0x00000000
+*/
+/* these correspond to the offsets from tm-* files from config directories */
+
+/* is wim part of psr?? */
+/* monitor wants lower case */
+static char *sparclet_regnames[NUM_REGS] = REGISTER_NAMES;
+
+/* Define the monitor command strings. Since these are passed directly
+ through to a printf style function, we may include formatting
+ strings. We also need a CR or LF on the end. */
+
+/* need to pause the monitor for timing reasons, so slow it down */
+
+static char *sparclet_inits[] = {"\n\r\r\n", NULL};
+
+static struct monitor_ops sparclet_cmds =
+{
+ MO_CLR_BREAK_USES_ADDR
+ | MO_HEX_PREFIX
+ | MO_HANDLE_NL
+ | MO_NO_ECHO_ON_OPEN
+ | MO_NO_ECHO_ON_SETMEM
+ | MO_RUN_FIRST_TIME
+ | MO_GETMEM_READ_SINGLE, /* flags */
+ sparclet_inits, /* Init strings */
+ "cont\r", /* continue command */
+ "step\r", /* single step */
+ "\r", /* break interrupts the program */
+ "+bp %x\r", /* set a breakpoint */
+ /* can't use "br" because only 2 hw bps are supported */
+ "-bp %x\r", /* clear a breakpoint */
+ "-bp\r", /* clear all breakpoints */
+ NULL, /* fill (start end val) */
+ /* can't use "fi" because it takes words, not bytes */
+ {
+ /* ex [addr] [-n count] [-b|-s|-l] default: ex cur -n 1 -b */
+ "ex %x -b\r%x\rq\r", /* setmem.cmdb (addr, value) */
+ "ex %x -s\r%x\rq\r", /* setmem.cmdw (addr, value) */
+ "ex %x -l\r%x\rq\r",
+ NULL, /* setmem.cmdll (addr, value) */
+ NULL, /*": ", /* setmem.resp_delim */
+ NULL, /*"? ", /* setmem.term */
+ NULL, /*"q\r", /* setmem.term_cmd */
+ },
+ {
+ /* since the parsing of multiple bytes is difficult due to
+ interspersed addresses, we'll only read 1 value at a time,
+ even tho these can handle a count */
+ /* we can use -n to set count to read, but may have to parse? */
+ "ex %x -n 1 -b\r", /* getmem.cmdb (addr, #bytes) */
+ "ex %x -n 1 -s\r", /* getmem.cmdw (addr, #swords) */
+ "ex %x -n 1 -l\r", /* getmem.cmdl (addr, #words) */
+ NULL, /* getmem.cmdll (addr, #dwords) */
+ ": ", /* getmem.resp_delim */
+ NULL, /* getmem.term */
+ NULL, /* getmem.term_cmd */
+ },
+ {
+ "reg %s 0x%x\r", /* setreg.cmd (name, value) */
+ NULL, /* setreg.resp_delim */
+ NULL, /* setreg.term */
+ NULL /* setreg.term_cmd */
+ },
+ {
+ "reg %s\r", /* getreg.cmd (name) */
+ ": ", /* getreg.resp_delim */
+ NULL, /* getreg.term */
+ NULL, /* getreg.term_cmd */
+ },
+ "reg\r", /* dump_registers */
+ "\\(\\w+\\)=\\([0-9a-fA-F]+\\)", /* register_pattern */
+ NULL, /* supply_register */
+#ifdef USE_GENERIC_LOAD
+ NULL, /* load_routine (defaults to SRECs) */
+ NULL, /* download command */
+ NULL, /* load response */
+#else
+ sparclet_load, /* load_routine (defaults to SRECs) */
+ /* load [c|a] [s|f|r] [addr count] */
+ "load a s %x\r", /* download command */
+ "load: ", /* load response */
+#endif
+ "monitor>", /* monitor command prompt */
+ /* yikes! gdb core dumps without this delimitor!! */
+ "\r", /* end-of-command delimitor */
+ NULL, /* optional command terminator */
+ &sparclet_ops, /* target operations */
+ SERIAL_1_STOPBITS, /* number of stop bits */
+ sparclet_regnames, /* registers names */
+ MONITOR_OPS_MAGIC /* magic */
+};
+
+static void
+sparclet_open (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ monitor_open (args, &sparclet_cmds, from_tty);
+}
+
+void
+_initialize_sparclet ()
+{
+ init_monitor_ops (&sparclet_ops);
+
+ sparclet_ops.to_shortname = "sparclet"; /* for the target command */
+ sparclet_ops.to_longname = "SPARC Sparclet monitor";
+#ifdef USE_GENERIC_LOAD
+ sparclet_ops.to_load = sparclet_load_gen; /* FIXME - should go back and try "do" */
+#endif
+#ifdef USE_SW_BREAKS
+ /* use SW breaks; target only supports 2 HW breakpoints */
+ sparclet_ops.to_insert_breakpoint = memory_insert_breakpoint;
+ sparclet_ops.to_remove_breakpoint = memory_remove_breakpoint;
+#endif
+
+ sparclet_ops.to_doc =
+ "Use a board running the Sparclet debug monitor.\n\
+Specify the serial device it is connected to (e.g. /dev/ttya).";
+
+ sparclet_ops.to_open = sparclet_open;
+ add_target (&sparclet_ops);
+}
+