From fbfa4d54f806bff6646948c6a26f9691075d56a3 Mon Sep 17 00:00:00 2001 From: Michael Snyder Date: Mon, 3 Feb 1997 19:18:32 +0000 Subject: [PATCH] Mon Feb 3 11:06:05 1997 Michael Snyder * 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 --- gdb/.Sanitize | 2 +- gdb/ChangeLog | 8 + gdb/m32r-rom.c | 563 +++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 572 insertions(+), 1 deletion(-) create mode 100644 gdb/m32r-rom.c diff --git a/gdb/.Sanitize b/gdb/.Sanitize index fd32ab0e43e..1425e499aa4 100644 --- a/gdb/.Sanitize +++ b/gdb/.Sanitize @@ -102,7 +102,7 @@ else fi fi -m32r_files="m32r-tdep.c m32r-rom.c" +m32r_files="m32r-tdep.c m32r-rom.c m32r-stub.c" if ( echo $* | grep keep\-m32r > /dev/null ) ; then keep_these_too="${m32r_files} ${keep_these_too}" diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 54c7b53906d..77275c2cfe0 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,11 @@ +start-sanitize-m32r +Mon Feb 3 11:06:05 1997 Michael Snyder + + * 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 +end-sanitize-m32r + Fri Jan 31 08:26:39 1997 Mark Alexander * mips-tdep.c (MIPS16_INSTLEN): Define. diff --git a/gdb/m32r-rom.c b/gdb/m32r-rom.c new file mode 100644 index 00000000000..25280c22ff9 --- /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 /* for time_t */ +#include "gdb_string.h" + +/* + * All this stuff just to get my host computer's IP address! + */ +#include /* for hostent */ +#include /* for struct in_addr */ +#if 1 +#include /* 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); +} -- 2.30.2