* configure,configure.in: Add target sparclet.

    * monitor.h,monitor.c:
    Added monitor flags MO_NO_ECHO_ON_SETMEM (don't expect echo on
    setmem command), MO_RUN_FIRST_TIME (if command to start process
    running on target is different from one to continue execution),
    MO_HEX_PREFIX (if addresses from monitor have a "0x" prefix).
    * monitor.c,parse.c,sparc-tdep.c:
    Don't require strings in the registers array.  This is to allow
    NULLs to be place holders in the tm-*.h file so that only minor
    changes are needed when a new processor is introduced (eg, one
    without floating point).
    * sparc-tdep.c: Conditionally remove dependancies on floating point.
    * sparclet-rom.c,config/sparc/sparclet.mt,config/sparc/tm-sparclet.h:
    New files for target sparclet.
    * symfile.c: Add option for 2nd parameter on load command : a load
    offset added to the vma of each section.

1 files changed, 279 insertions, 0 deletions

diff --git a/gdb/sparclet-rom.c b/gdb/sparclet-rom.c
new file mode 100644
index 0000000..98bc27b
--- /dev/null
+++ b/gdb/sparclet-rom.c
@@ -0,0 +1,279 @@
+/* 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);
+}
+