Mon Feb 3 11:06:05 1997 Michael Snyder <msnyder@cleaver.cygnus.com>

        * m32r-stub.c: New -- remote protocol support for M32R cpu.
        * m32r-rom.c:  Several experiments with improved download time.
        * .Sanitize:   Add entry for m32r-stub.c

1 files changed, 563 insertions, 0 deletions

diff --git a/gdb/m32r-rom.c b/gdb/m32r-rom.c
new file mode 100644
index 0000000..25280c2
--- /dev/null
+++ b/gdb/m32r-rom.c
@@ -0,0 +1,563 @@
+/* Remote debugging interface to m32r ROM monitor for GDB, the GNU debugger.
+   Copyright 1996 Free Software Foundation, Inc.
+
+   Adapted by Michael Snyder of Cygnus Support.
+
+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.  */
+
+/* This module defines communication with the Mitsubishi m32r monitor */
+
+#include "defs.h"
+#include "gdbcore.h"
+#include "target.h"
+#include "monitor.h"
+#include "serial.h"
+#include "symtab.h"
+#include "command.h"
+#include "gdbcmd.h"
+#include "symfile.h"	/* for generic load */
+#include <time.h>	/* for time_t */
+#include "gdb_string.h"
+
+/*
+ * All this stuff just to get my host computer's IP address!
+ */
+#include <netdb.h>	/* for hostent */
+#include <netinet/in.h>	/* for struct in_addr */
+#if 1
+#include <arpa/inet.h>	/* for inet_ntoa */
+#endif
+
+static char *board_addr;	/* user-settable IP address for M32R-EVA */
+static char *server_addr;	/* user-settable IP address for gdb host */
+static char *download_path;	/* user-settable path for SREC files     */
+
+
+/* 
+ * Function: m32r_load_1 (helper function)
+ */
+
+static void
+m32r_load_section (abfd, s, data_count)
+     bfd      *abfd;
+     asection *s;
+     unsigned int *data_count;
+{
+  if (s->flags & SEC_LOAD)
+    {
+      bfd_size_type section_size = bfd_section_size (abfd, s);
+      bfd_vma       section_base = bfd_section_vma  (abfd, s);
+      unsigned int  buffer, i;
+
+      *data_count += section_size;
+
+      printf_filtered ("Loading section %s, size 0x%lx vma ",
+		       bfd_section_name (abfd, s), section_size);
+      print_address_numeric (section_base, 1, gdb_stdout);
+      printf_filtered ("\n");
+      gdb_flush (gdb_stdout);
+      monitor_printf ("%x mw\r" , section_base);
+      for (i = 0; i < section_size; i += 4)
+	{
+	  QUIT;
+	  monitor_expect (" -> ", NULL, 0);
+	  bfd_get_section_contents (abfd, s, (char *) &buffer, i, 4);
+	  monitor_printf ("%x\n", buffer);
+	}
+      monitor_expect (" -> ", NULL, 0);
+      monitor_printf ("q\n");
+      monitor_expect_prompt (NULL, 0);
+    }
+}
+
+static int 
+m32r_load_1 (dummy)
+     void *dummy;
+{
+  int data_count = 0;
+
+  bfd_map_over_sections ((bfd *) dummy, m32r_load_section, &data_count);
+  return data_count;
+}
+
+/* 
+ * Function: m32r_load (an alternate way to load) 
+ */
+
+static void
+m32r_load (filename, from_tty) 
+    char *filename;
+    int from_tty;
+{
+  extern int inferior_pid;
+  bfd *abfd;
+  asection *s;
+  unsigned int i, data_count = 0;
+  time_t start_time, end_time;	/* for timing of download */
+
+  if (filename == NULL || filename[0] == 0)
+    filename = get_exec_file (1);
+
+  abfd = bfd_openr (filename, 0);
+  if (!abfd)
+    error ("Unable to open file %s\n", filename);
+  if (bfd_check_format (abfd, bfd_object) == 0)
+    error ("File is not an object file\n");
+  start_time = time (NULL);
+#if 0
+  for (s = abfd->sections; s; s = s->next)
+    if (s->flags & SEC_LOAD)
+      {
+	bfd_size_type section_size = bfd_section_size (abfd, s);
+	bfd_vma       section_base = bfd_section_vma  (abfd, s);
+	unsigned int  buffer;
+
+	data_count += section_size;
+
+	printf_filtered ("Loading section %s, size 0x%lx vma ",
+			 bfd_section_name (abfd, s), section_size);
+	print_address_numeric (section_base, 1, gdb_stdout);
+	printf_filtered ("\n");
+ 	gdb_flush (gdb_stdout);
+	monitor_printf ("%x mw\r" , section_base);
+	for (i = 0; i < section_size; i += 4)
+	  {
+	    monitor_expect (" -> ", NULL, 0);
+	    bfd_get_section_contents (abfd, s, (char *) &buffer, i, 4);
+	    monitor_printf ("%x\n", buffer);
+	  }
+	monitor_expect (" -> ", NULL, 0);
+	monitor_printf ("q\n");
+	monitor_expect_prompt (NULL, 0);
+      }
+#else
+  if (!(catch_errors (m32r_load_1, abfd, "Load aborted!\n", RETURN_MASK_ALL)))
+    {
+      monitor_printf ("q\n");
+      return;
+    }
+#endif
+  end_time = time (NULL);
+  printf_filtered ("Start address 0x%lx\n", bfd_get_start_address (abfd));
+  report_transfer_performance (data_count, start_time, end_time);
+
+  /* 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 */
+
+  /* This is necessary because many things were based on the PC at the
+     time that we attached to the monitor, which is no longer valid
+     now that we have loaded new code (and just changed the PC).
+     Another way to do this might be to call normal_stop, except that
+     the stack may not be valid, and things would get horribly
+     confused... */
+
+  clear_symtab_users ();
+}
+
+static void
+m32r_load_gen (filename, from_tty) 
+    char *filename;
+    int from_tty;
+{
+  generic_load (filename, from_tty);
+}
+
+static void m32r_open PARAMS ((char *args, int from_tty));
+
+/* This array of registers needs to match the indexes used by GDB. The
+   whole reason this exists is because the various ROM monitors use
+   different names than GDB does, and don't support all the registers
+   either. So, typing "info reg sp" becomes an "A7". */
+
+static char *m32r_regnames[] = 
+{ "r0",  "r1",  "r2",  "r3",  "r4",  "r5",  "r6",  "r7", 
+  "r8",  "r9",  "r10", "r11", "r12", "r13", "r14", "r15", 
+  "psw", "cbr", "spi", "spu", "bpc", "pc",  "accl", "acch", 
+};
+
+static void
+m32r_supply_register (regname, regnamelen, val, vallen)
+     char *regname;
+     int regnamelen;
+     char *val;
+     int vallen;
+{
+  int regno;
+  int num_regs = sizeof(m32r_regnames) / sizeof(m32r_regnames[0]);
+
+  for (regno = 0; regno < num_regs; regno++)
+    if (strncmp(regname, m32r_regnames[regno], regnamelen) == 0)
+      break;
+
+  if (regno >= num_regs)
+    return;		/* no match */
+
+  if (regno == ACCL_REGNUM)
+    { /* special handling for 64-bit acc reg */
+      monitor_supply_register (ACCH_REGNUM, val);
+      if (val = (char *) strchr(val, ':'))  /* skip past ':' to get 2nd word */
+	monitor_supply_register (ACCL_REGNUM, val + 1);
+    }
+  else
+    {
+      monitor_supply_register (regno, val);
+      if (regno == PSW_REGNUM)
+	{
+	  unsigned long psw = strtoul (val, NULL, 16);
+	  char *zero = "00000000", *one = "00000001";
+
+#ifdef SM_REGNUM
+	  /* Stack mode bit */
+	  monitor_supply_register (SM_REGNUM, (psw & 0x80) ? one : zero);
+#endif
+#ifdef BSM_REGNUM
+	  /* Backup stack mode bit */
+	  monitor_supply_register (BSM_REGNUM, (psw & 0x8000) ? one : zero);
+#endif
+#ifdef IE_REGNUM
+	  /* Interrupt enable bit */
+	  monitor_supply_register (IE_REGNUM, (psw & 0x40) ? one : zero);
+#endif
+#ifdef BIE_REGNUM
+	  /* Backup interrupt enable bit */
+	  monitor_supply_register (BIE_REGNUM, (psw & 0x4000) ? one : zero);
+#endif
+#ifdef COND_REGNUM
+	  /* Condition bit (carry etc.) */
+	  monitor_supply_register (COND_REGNUM, (psw & 0x1) ? one : zero);
+#endif
+#ifdef CBR_REGNUM
+	  monitor_supply_register (CBR_REGNUM, (psw & 0x1) ? one : zero);
+#endif
+#ifdef BPC_REGNUM
+	  monitor_supply_register (BPC_REGNUM, zero); /* KLUDGE:   (???????) */
+#endif
+#ifdef BCARRY_REGNUM
+	  monitor_supply_register (BCARRY_REGNUM, zero); /* KLUDGE: (??????) */
+#endif
+	}	  
+
+      if (regno == SPI_REGNUM || regno == SPU_REGNUM)	
+	{ /* special handling for stack pointer (spu or spi) */
+	  unsigned long stackmode = read_register (PSW_REGNUM) & 0x80;
+
+	  if (regno == SPI_REGNUM && !stackmode)	/* SP == SPI */
+	    monitor_supply_register (SP_REGNUM, val);
+	  else if (regno == SPU_REGNUM && stackmode)	/* SP == SPU */
+	    monitor_supply_register (SP_REGNUM, val);
+	}
+    }
+}
+
+static struct target_ops m32r_ops;
+
+static char *m32r_inits[] = {"\r", NULL};
+
+static struct monitor_ops m32r_cmds =
+{
+  MO_CLR_BREAK_USES_ADDR | MO_REGISTER_VALUE_FIRST,
+  m32r_inits,			/* Init strings */
+  "go\r",			/* continue command */
+  "step\r",			/* single step */
+  NULL,				/* interrupt command */
+  "%x +bp\r",			/* set a breakpoint */
+  "%x -bp\r",			/* clear a breakpoint */
+  "bpoff\r",			/* clear all breakpoints */
+  "%x %x %x fill\r",		/* fill (start length val) */
+  {
+    "%x 1 %x fill\r",		/* setmem.cmdb (addr, value) */
+    "%x 1 %x fillh\r",		/* setmem.cmdw (addr, value) */
+    "%x 1 %x fillw\r",		/* setmem.cmdl (addr, value) */
+    NULL,			/* setmem.cmdll (addr, value) */
+    NULL,			/* setmem.resp_delim */
+    NULL,			/* setmem.term */
+    NULL			/* setmem.term_cmd */
+  },
+  {
+    "%x %x dump\r",		/* getmem.cmdb (addr, len) */
+    NULL,			/* getmem.cmdw (addr, len) */
+    NULL,			/* getmem.cmdl (addr, len) */
+    NULL,			/* getmem.cmdll (addr, len) */
+    ": ",			/* getmem.resp_delim */
+    NULL,			/* getmem.term */
+    NULL			/* getmem.term_cmd */
+  },
+  {
+    "%x to %%%s\r",		/* setreg.cmd (name, value) */
+    NULL,			/* setreg.resp_delim */
+    NULL,			/* setreg.term */
+    NULL			/* setreg.term_cmd */
+  },
+  {
+    NULL,			/* getreg.cmd (name) */
+    NULL,			/* getreg.resp_delim */
+    NULL,			/* getreg.term */
+    NULL			/* getreg.term_cmd */
+  },
+  ".reg\r",			/* dump_registers */
+  "\\(\\w+\\) += \\([0-9a-fA-F]+\\b\\)", /* register_pattern */
+  m32r_supply_register,		/* supply_register */
+  NULL,				/* load_routine (defaults to SRECs) */
+  NULL,				/* download command */
+  NULL,				/* load response */
+  "ok ",			/* monitor command prompt */
+  "\r",				/* end-of-line terminator */
+  NULL,				/* optional command terminator */
+  &m32r_ops,			/* target operations */
+  SERIAL_1_STOPBITS,		/* number of stop bits */
+  m32r_regnames,		/* registers names */
+  MONITOR_OPS_MAGIC		/* magic */
+  };
+
+static void
+m32r_open(args, from_tty)
+     char *args;
+     int from_tty;
+{
+  monitor_open (args, &m32r_cmds, from_tty);
+}
+
+/* Function: set_board_address
+   Tell the BootOne monitor what it's ethernet IP address is. */
+
+static void
+m32r_set_board_address (args, from_tty)
+     char *args;
+     int  from_tty;
+{
+  int resp_len;
+  char buf[1024];
+
+  if (args && *args)
+    {
+      monitor_printf ("ulip %s\n", args);
+      resp_len = monitor_expect_prompt (buf, sizeof(buf));
+      /* now parse the result for success */
+    }
+  else
+    error ("Requires argument (IP address for M32R-EVA board)");
+}
+
+/* Function: set_server_address
+   Tell the BootOne monitor what gdb's ethernet IP address is. */
+
+static void
+m32r_set_server_address (args, from_tty)
+     char *args;
+     int  from_tty;
+{
+  int resp_len;
+  char buf[1024];
+
+  if (args && *args)
+    {
+      monitor_printf ("uhip %s\n", args);
+      resp_len = monitor_expect_prompt (buf, sizeof(buf));
+      /* now parse the result for success */
+    }
+  else
+    error ("Requires argument (IP address of GDB's host computer)");
+}
+
+/* Function: set_download_path
+   Tell the BootOne monitor the default path for downloadable SREC files. */
+
+static void
+m32r_set_download_path (args, from_tty)
+     char *args;
+     int  from_tty;
+{
+  int resp_len;
+  char buf[1024];
+
+  if (args && *args)
+    {
+      monitor_printf ("up %s\n", args);
+      resp_len = monitor_expect_prompt (buf, sizeof(buf));
+      /* now parse the result for success */
+    }
+  else
+    error ("Requires argument (default path for downloadable SREC files)");
+}
+
+static void
+m32r_upload_command (args, from_tty)
+     char *args;
+     int from_tty;
+{
+  bfd *abfd;
+  asection *s;
+  time_t start_time, end_time;	/* for timing of download */
+  extern int inferior_pid;
+  int resp_len, data_count = 0;
+  char buf[1024];
+  struct hostent *hostent;
+  struct in_addr inet_addr;
+
+  /* first check to see if there's an ethernet port! */
+  monitor_printf ("ust\r");
+  resp_len = monitor_expect_prompt (buf, sizeof(buf));
+  if (!strchr (buf, ':'))
+    error ("No ethernet connection!");
+
+  if (board_addr == 0)
+    {
+      /* scan second colon in the output from the "ust" command */
+      char * myIPaddress = strchr (strchr (buf, ':') + 1, ':') + 1;
+
+      while (isspace(*myIPaddress))
+	myIPaddress++;
+
+      if (!strncmp (myIPaddress, "0.0.", 4))    /* empty */
+	error ("Please use 'set board-address' to set the M32R-EVA board's IP address.");
+      if (strchr (myIPaddress, '('))
+	*(strchr (myIPaddress, '(')) = '\0';    /* delete trailing junk */
+      board_addr = strsave (myIPaddress);
+    }
+  if (server_addr == 0)
+    {
+      buf[0] = 0;
+      gethostname (buf, sizeof(buf));
+      if (buf[0] != 0)
+	hostent = gethostbyname (buf);
+      if (hostent != 0)
+	{
+#if 1
+	  memcpy (&inet_addr.s_addr, hostent->h_addr, 
+		  sizeof(inet_addr.s_addr));
+	  server_addr = (char *) inet_ntoa (inet_addr);
+#else
+	  server_addr = (char *) inet_ntoa (hostent->h_addr);
+#endif
+	}
+      if (server_addr == 0)	/* failed? */
+	error ("Need to know gdb host computer's IP address (use 'set server-address')");
+    }
+
+  if (args == 0 || args[0] == 0)	/* no args: upload the current file */
+    args = get_exec_file (1);
+
+  if (args[0] != '/' && download_path == 0)
+    if (current_directory)
+      download_path = strsave (current_directory);
+    else
+      error ("Need to know default download path (use 'set download-path')");
+
+  start_time = time (NULL);
+  monitor_printf ("uhip %s\r", server_addr);
+  resp_len = monitor_expect_prompt (buf, sizeof(buf));  /* parse result? */
+  monitor_printf ("ulip %s\r", board_addr);
+  resp_len = monitor_expect_prompt (buf, sizeof(buf));  /* parse result? */
+  if (args[0] != '/')
+    monitor_printf ("up %s\r", download_path);	/* use default path */
+  else
+    monitor_printf ("up\r");			/* rooted filename/path */
+  resp_len = monitor_expect_prompt (buf, sizeof(buf));  /* parse result? */
+
+  if (strrchr (args, '.') && !strcmp (strrchr (args, '.'), ".srec"))
+    monitor_printf ("ul %s\r", args);
+  else					/* add ".srec" suffix */
+    monitor_printf ("ul %s.srec\r", args);
+  resp_len = monitor_expect_prompt (buf, sizeof(buf));  /* parse result? */
+
+  if (buf[0] == 0 || strstr(buf, "complete") == 0)
+    error("Upload file not found: %s.srec\nCheck IP addresses and download path.", args);
+  else
+    printf_filtered (" -- Ethernet load complete.\n");
+
+  end_time = time (NULL);
+  if (abfd = bfd_openr (args, 0))
+    { /* Download is done -- print section statistics */
+      if (bfd_check_format (abfd, bfd_object) == 0)
+	{
+	  printf_filtered ("File is not an object file\n");
+	}
+      for (s = abfd->sections; s; s = s->next)
+	if (s->flags & SEC_LOAD)
+	  {
+	    bfd_size_type section_size = bfd_section_size (abfd, s);
+	    bfd_vma       section_base = bfd_section_vma  (abfd, s);
+	    unsigned int  buffer;
+
+	    data_count += section_size;
+
+	    printf_filtered ("Loading section %s, size 0x%lx vma ",
+			     bfd_section_name (abfd, s), section_size);
+	    print_address_numeric (section_base, 1, gdb_stdout);
+	    printf_filtered ("\n");
+	    gdb_flush (gdb_stdout);
+	  }
+      /* Finally, make the PC point at the start address */
+      write_pc (bfd_get_start_address (abfd));
+      report_transfer_performance (data_count, start_time, end_time);
+      printf_filtered ("Start address 0x%lx\n", bfd_get_start_address (abfd));
+    }
+  inferior_pid = 0;             /* No process now */
+
+  /* This is necessary because many things were based on the PC at the
+     time that we attached to the monitor, which is no longer valid
+     now that we have loaded new code (and just changed the PC).
+     Another way to do this might be to call normal_stop, except that
+     the stack may not be valid, and things would get horribly
+     confused... */
+
+  clear_symtab_users ();
+}
+
+void
+_initialize_m32r_rom ()
+{
+  init_monitor_ops (&m32r_ops);
+
+  m32r_ops.to_shortname = "m32r";
+  m32r_ops.to_longname = "m32r monitor";
+  m32r_ops.to_load = m32r_load_gen;	/* monitor lacks a download command */
+  m32r_ops.to_doc = "Debug via the m32r monitor.\n\
+Specify the serial device it is connected to (e.g. /dev/ttya).";
+  m32r_ops.to_open = m32r_open;
+
+  add_show_from_set
+    (add_set_cmd ("download-path", class_obscure, var_string,
+		  (char *) &download_path,
+		  "Set the default path for downloadable SREC files.",
+		  &setlist),
+     &showlist);
+
+  add_show_from_set
+    (add_set_cmd ("board-address", class_obscure, var_string,
+		  (char *) &board_addr,
+		  "Set IP address for M32R-EVA target board.",
+		  &setlist),
+     &showlist);
+
+  add_show_from_set
+    (add_set_cmd ("server-address", class_obscure, var_string,
+		  (char *) &server_addr,
+		  "Set IP address for download server (GDB's host computer).",
+		  &setlist),
+     &showlist);
+
+  add_com ("upload", class_obscure, m32r_upload_command,
+	   "Upload the srec file via the monitor's Ethernet upload capability."); 
+
+  add_com ("tload", class_obscure, m32r_load, "test upload command.");
+
+  add_target (&m32r_ops);
+}