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* sim-hw.c: Include ctype.h.
(do_hw_poll_read): Do not assume EAGAIN.
This commit is contained in:
Andrew Cagney
@ -1,3 +1,10 @@
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start-sanitize-am30
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Thu May 21 17:57:16 1998 Andrew Cagney <cagney@b1.cygnus.com>
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* sim-hw.c: Include ctype.h.
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(do_hw_poll_read): Do not assume EAGAIN.
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end-sanitize-am30
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Wed May 20 04:37:57 1998 Doug Evans <devans@seba.cygnus.com>
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* cgen-trace.c (first_insn_p): New static local.
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564
sim/common/sim-hw.c
Normal file
564
sim/common/sim-hw.c
Normal file
@ -0,0 +1,564 @@
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/* Simulator hardware option handling.
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Copyright (C) 1998 Free Software Foundation, Inc.
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Contributed by Cygnus Support and Andrew Cagney.
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This file is part of GDB, the GNU debugger.
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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, or (at your option)
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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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||||
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||||
You should have received a copy of the GNU General Public License along
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||||
with this program; if not, write to the Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "sim-main.h"
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#include "sim-assert.h"
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#include "sim-options.h"
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#include "sim-hw.h"
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#include "hw-tree.h"
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#include "hw-device.h"
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#include "hw-base.h"
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#ifdef HAVE_STRING_H
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#include <string.h>
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#else
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#include <ctype.h>
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#include <sys/errno.h>
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struct sim_hw {
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struct hw *tree;
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int trace_p;
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int info_p;
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/* if called from a processor */
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sim_cpu *cpu;
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sim_cia cia;
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};
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void
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sim_hw_parse (struct sim_state *sd,
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const char *fmt,
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...)
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{
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va_list ap;
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va_start (ap, fmt);
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hw_tree_vparse (STATE_HW (sd)->tree, fmt, ap);
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va_end (ap);
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}
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struct printer {
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struct sim_state *file;
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void (*print) (struct sim_state *, const char *, va_list ap);
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};
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static void
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do_print (void *file, const char *fmt, ...)
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{
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struct printer *p = file;
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va_list ap;
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va_start (ap, fmt);
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p->print (p->file, fmt, ap);
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va_end (ap);
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}
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void
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sim_hw_print (struct sim_state *sd,
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void (*print) (struct sim_state *, const char *, va_list ap))
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{
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struct printer p;
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p.file = sd;
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p.print = print;
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hw_tree_print (STATE_HW (sd)->tree, do_print, &p);
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}
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/* command line options. */
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enum {
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OPTION_HW_INFO = OPTION_START,
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OPTION_HW_TRACE,
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OPTION_HW_DEVICE,
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OPTION_HW_FILE,
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};
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static DECLARE_OPTION_HANDLER (hw_option_handler);
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static const OPTION hw_options[] =
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{
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{ {"hw-info", no_argument, NULL, OPTION_HW_INFO },
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'\0', NULL, "List configurable hw regions",
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hw_option_handler },
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{ {"info-hw", no_argument, NULL, OPTION_HW_INFO },
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'\0', NULL, NULL,
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hw_option_handler },
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{ {"hw-trace", optional_argument, NULL, OPTION_HW_TRACE },
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'\0', "on|off", "Trace all hardware devices",
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hw_option_handler },
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{ {"trace-hw", optional_argument, NULL, OPTION_HW_TRACE },
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'\0', NULL, NULL,
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hw_option_handler },
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{ {"hw-device", required_argument, NULL, OPTION_HW_DEVICE },
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'\0', "DEVICE", "Add the specified device",
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hw_option_handler },
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{ {"hw-file", required_argument, NULL, OPTION_HW_FILE },
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'\0', "FILE", "Add the devices listed in the file",
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hw_option_handler },
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{ {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
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};
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/* Copied from ../ppc/psim.c:psim_merge_device_file() */
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static SIM_RC
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merge_device_file (struct sim_state *sd,
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const char *file_name)
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{
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FILE *description;
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struct hw *current = STATE_HW (sd)->tree;
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int line_nr;
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char device_path[1000];
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/* try opening the file */
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description = fopen (file_name, "r");
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if (description == NULL)
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{
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perror (file_name);
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return SIM_RC_FAIL;
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}
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line_nr = 0;
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while (fgets (device_path, sizeof(device_path), description))
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{
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char *device;
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/* check that a complete line was read */
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if (strchr (device_path, '\n') == NULL)
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{
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fclose (description);
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sim_io_eprintf (sd, "%s:%d: line to long", file_name, line_nr);
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return SIM_RC_FAIL;
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}
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*strchr (device_path, '\n') = '\0';
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line_nr++;
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/* skip comments ("#" or ";") and blank lines lines */
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for (device = device_path;
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*device != '\0' && isspace (*device);
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device++);
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if (device[0] == '#'
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|| device[0] == ';'
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|| device[0] == '\0')
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continue;
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/* merge any appended lines */
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while (device_path[strlen (device_path) - 1] == '\\')
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{
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int curlen = strlen (device_path) - 1;
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/* zap the `\' at the end of the line */
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device_path[curlen] = '\0';
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/* append the next line */
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if (!fgets (device_path + curlen,
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sizeof (device_path) - curlen,
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description))
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{
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fclose (description);
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sim_io_eprintf (sd, "%s:%d: unexpected eof", file_name, line_nr);
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return SIM_RC_FAIL;
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}
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if (strchr(device_path, '\n') == NULL)
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{
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fclose(description);
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sim_io_eprintf (sd, "%s:%d: line to long", file_name, line_nr);
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return SIM_RC_FAIL;
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}
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*strchr(device_path, '\n') = '\0';
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line_nr++;
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}
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/* parse this line */
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current = hw_tree_parse (current, "%s", device);
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}
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fclose (description);
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return SIM_RC_OK;
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}
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static SIM_RC
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hw_option_handler (struct sim_state *sd, sim_cpu *cpu, int opt,
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char *arg, int is_command)
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{
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switch (opt)
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{
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case OPTION_HW_INFO:
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{
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/* delay info until after the tree is finished */
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STATE_HW (sd)->info_p = 1;
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return SIM_RC_OK;
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break;
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}
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case OPTION_HW_TRACE:
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{
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if (arg == NULL)
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{
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STATE_HW (sd)->trace_p = 1;
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}
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else if (strcmp (arg, "yes") == 0
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|| strcmp (arg, "on") == 0)
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{
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STATE_HW (sd)->trace_p = 1;
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}
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else if (strcmp (arg, "no") == 0
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|| strcmp (arg, "off") == 0)
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{
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STATE_HW (sd)->trace_p = 0;
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}
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else
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{
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sim_io_eprintf (sd, "Option --hw-trace ignored\n");
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/* set tracing on all devices */
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return SIM_RC_FAIL;
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}
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/* FIXME: Not very nice - see also hw-base.c */
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if (STATE_HW (sd)->trace_p)
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hw_tree_parse (STATE_HW (sd)->tree, "/global-trace? true");
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return SIM_RC_OK;
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break;
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}
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case OPTION_HW_DEVICE:
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{
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hw_tree_parse (STATE_HW (sd)->tree, arg);
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return SIM_RC_OK;
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}
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case OPTION_HW_FILE:
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{
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return merge_device_file (sd, arg);
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}
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default:
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sim_io_eprintf (sd, "Unknown hw option %d\n", opt);
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return SIM_RC_FAIL;
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}
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return SIM_RC_FAIL;
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}
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/* "hw" module install handler.
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This is called via sim_module_install to install the "hw" subsystem
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into the simulator. */
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static MODULE_INIT_FN sim_hw_init;
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static MODULE_UNINSTALL_FN sim_hw_uninstall;
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SIM_RC
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sim_hw_install (struct sim_state *sd)
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{
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SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
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sim_add_option_table (sd, NULL, hw_options);
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sim_module_add_uninstall_fn (sd, sim_hw_uninstall);
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sim_module_add_init_fn (sd, sim_hw_init);
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STATE_HW (sd) = ZALLOC (struct sim_hw);
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STATE_HW (sd)->tree = hw_tree_create (sd, "core");
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return SIM_RC_OK;
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}
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static SIM_RC
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sim_hw_init (struct sim_state *sd)
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{
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/* FIXME: anything needed? */
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hw_tree_finish (STATE_HW (sd)->tree);
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if (STATE_HW (sd)->info_p)
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sim_hw_print (sd, sim_io_vprintf);
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return SIM_RC_OK;
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}
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/* Uninstall the "hw" subsystem from the simulator. */
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static void
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sim_hw_uninstall (struct sim_state *sd)
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{
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/* hw_tree_delete (STATE_HW (sd)->tree); */
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zfree (STATE_HW (sd));
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STATE_HW (sd) = NULL;
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}
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||||
|
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/* Data transfers to/from the hardware device tree. There are several
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cases. */
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||||
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||||
|
||||
/* CPU: The simulation is running and the current CPU/CIA
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||||
initiates a data transfer. */
|
||||
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void
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sim_cpu_hw_io_read_buffer (sim_cpu *cpu,
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||||
sim_cia cia,
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||||
struct hw *hw,
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||||
void *dest,
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||||
int space,
|
||||
unsigned_word addr,
|
||||
unsigned nr_bytes)
|
||||
{
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||||
SIM_DESC sd = CPU_STATE (cpu);
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||||
STATE_HW (sd)->cpu = cpu;
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STATE_HW (sd)->cia = cia;
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||||
if (hw_io_read_buffer (hw, dest, space, addr, nr_bytes) != nr_bytes)
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sim_engine_abort (sd, cpu, cia, "broken CPU read");
|
||||
}
|
||||
|
||||
void
|
||||
sim_cpu_hw_io_write_buffer (sim_cpu *cpu,
|
||||
sim_cia cia,
|
||||
struct hw *hw,
|
||||
const void *source,
|
||||
int space,
|
||||
unsigned_word addr,
|
||||
unsigned nr_bytes)
|
||||
{
|
||||
SIM_DESC sd = CPU_STATE (cpu);
|
||||
STATE_HW (sd)->cpu = cpu;
|
||||
STATE_HW (sd)->cia = cia;
|
||||
if (hw_io_write_buffer (hw, source, space, addr, nr_bytes) != nr_bytes)
|
||||
sim_engine_abort (sd, cpu, cia, "broken CPU write");
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
/* SYSTEM: A data transfer is being initiated by the system. */
|
||||
|
||||
unsigned
|
||||
sim_hw_io_read_buffer (struct sim_state *sd,
|
||||
struct hw *hw,
|
||||
void *dest,
|
||||
int space,
|
||||
unsigned_word addr,
|
||||
unsigned nr_bytes)
|
||||
{
|
||||
STATE_HW (sd)->cpu = NULL;
|
||||
return hw_io_read_buffer (hw, dest, space, addr, nr_bytes);
|
||||
}
|
||||
|
||||
unsigned
|
||||
sim_hw_io_write_buffer (struct sim_state *sd,
|
||||
struct hw *hw,
|
||||
const void *source,
|
||||
int space,
|
||||
unsigned_word addr,
|
||||
unsigned nr_bytes)
|
||||
{
|
||||
STATE_HW (sd)->cpu = NULL;
|
||||
return hw_io_write_buffer (hw, source, space, addr, nr_bytes);
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* Abort the simulation specifying HW as the reason */
|
||||
|
||||
void
|
||||
hw_vabort (struct hw *me,
|
||||
const char *fmt,
|
||||
va_list ap)
|
||||
{
|
||||
const char *name;
|
||||
char *msg;
|
||||
/* find an identity */
|
||||
if (me != NULL && hw_path (me) != NULL && hw_path (me) [0] != '\0')
|
||||
name = hw_path (me);
|
||||
else if (me != NULL && hw_name (me) != NULL && hw_name (me)[0] != '\0')
|
||||
name = hw_name (me);
|
||||
else if (me != NULL && hw_family (me) != NULL && hw_family (me)[0] != '\0')
|
||||
name = hw_family (me);
|
||||
else
|
||||
name = "device";
|
||||
/* construct an updated format string */
|
||||
msg = alloca (strlen (name) + strlen (": ") + strlen (fmt) + 1);
|
||||
strcpy (msg, name);
|
||||
strcat (msg, ": ");
|
||||
strcat (msg, fmt);
|
||||
/* report the problem */
|
||||
sim_engine_vabort (hw_system (me),
|
||||
STATE_HW (hw_system (me))->cpu,
|
||||
STATE_HW (hw_system (me))->cia,
|
||||
msg, ap);
|
||||
}
|
||||
|
||||
void
|
||||
hw_abort (struct hw *me,
|
||||
const char *fmt,
|
||||
...)
|
||||
{
|
||||
va_list ap;
|
||||
/* report the problem */
|
||||
va_start (ap, fmt);
|
||||
hw_vabort (me, fmt, ap);
|
||||
va_end (ap);
|
||||
}
|
||||
|
||||
void
|
||||
sim_hw_abort (struct sim_state *sd,
|
||||
struct hw *me,
|
||||
const char *fmt,
|
||||
...)
|
||||
{
|
||||
va_list ap;
|
||||
va_start (ap, fmt);
|
||||
if (me == NULL)
|
||||
sim_engine_vabort (sd, NULL, NULL_CIA, fmt, ap);
|
||||
else
|
||||
hw_vabort (me, fmt, ap);
|
||||
va_end (ap);
|
||||
}
|
||||
|
||||
|
||||
/* MISC routines to tie HW into the rest of the system */
|
||||
|
||||
void
|
||||
hw_halt (struct hw *me,
|
||||
int reason,
|
||||
int status)
|
||||
{
|
||||
struct sim_state *sd = hw_system (me);
|
||||
struct sim_hw *sim = STATE_HW (sd);
|
||||
sim_engine_halt (sd, sim->cpu, NULL, sim->cia, reason, status);
|
||||
}
|
||||
|
||||
struct _sim_cpu *
|
||||
hw_system_cpu (struct hw *me)
|
||||
{
|
||||
return STATE_HW (hw_system (me))->cpu;
|
||||
}
|
||||
|
||||
void
|
||||
hw_trace (struct hw *me,
|
||||
const char *fmt,
|
||||
...)
|
||||
{
|
||||
if (hw_trace_p (me)) /* to be sure, to be sure */
|
||||
{
|
||||
va_list ap;
|
||||
va_start (ap, fmt);
|
||||
sim_io_eprintf (hw_system (me), "%s: ", hw_path (me));
|
||||
sim_io_evprintf (hw_system (me), fmt, ap);
|
||||
sim_io_eprintf (hw_system (me), "\n");
|
||||
va_end (ap);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* Based on gdb-4.17/sim/ppc/main.c:sim_io_read_stdin() */
|
||||
|
||||
int
|
||||
do_hw_poll_read (struct hw *me,
|
||||
do_hw_poll_read_method *read,
|
||||
int sim_io_fd,
|
||||
void *buf,
|
||||
unsigned sizeof_buf)
|
||||
{
|
||||
int status = read (hw_system (me), sim_io_fd, buf, sizeof_buf);
|
||||
if (status > 0)
|
||||
return status;
|
||||
else if (status == 0 && sizeof_buf == 0)
|
||||
return 0;
|
||||
else if (status == 0)
|
||||
return HW_IO_EOF;
|
||||
else /* status < 0 */
|
||||
{
|
||||
#ifdef EAGAIN
|
||||
if (STATE_CALLBACK (hw_system (me))->last_errno == EAGAIN)
|
||||
return HW_IO_NOT_READY;
|
||||
else
|
||||
return HW_IO_EOF;
|
||||
#else
|
||||
return HW_IO_EOF;
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* The event queue abstraction (for devices) */
|
||||
|
||||
|
||||
struct _hw_event {
|
||||
void *data;
|
||||
struct hw *me;
|
||||
hw_event_handler *handler;
|
||||
sim_event *real;
|
||||
};
|
||||
|
||||
/* Pass the H/W event onto the real handler */
|
||||
|
||||
static void
|
||||
bounce_hw_event (SIM_DESC sd,
|
||||
void *data)
|
||||
{
|
||||
hw_event event = * (hw_event*) data;
|
||||
zfree (data);
|
||||
/* if we are delivering an event, we don't have a CPU. */
|
||||
STATE_HW (sd)->cpu = NULL;
|
||||
event.handler (event.me, event.data);
|
||||
}
|
||||
|
||||
|
||||
/* Map onto the event functions */
|
||||
|
||||
hw_event *
|
||||
hw_event_queue_schedule (struct hw *me,
|
||||
signed64 delta_time,
|
||||
hw_event_handler *handler,
|
||||
void *data)
|
||||
{
|
||||
hw_event *event = ZALLOC (hw_event);
|
||||
event->data = data;
|
||||
event->handler = handler;
|
||||
event->me = me;
|
||||
event->real = sim_events_schedule (hw_system (me),
|
||||
delta_time,
|
||||
bounce_hw_event,
|
||||
event);
|
||||
return event;
|
||||
}
|
||||
|
||||
void
|
||||
hw_event_queue_deschedule (struct hw *me,
|
||||
hw_event *event_to_remove)
|
||||
{
|
||||
sim_events_deschedule (hw_system (me),
|
||||
event_to_remove->real);
|
||||
zfree (event_to_remove);
|
||||
}
|
||||
|
||||
signed64
|
||||
hw_event_queue_time (struct hw *me)
|
||||
{
|
||||
return sim_events_time (hw_system (me));
|
||||
}
|
||||
@ -23,6 +23,12 @@ with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
#include "sim-options.h"
|
||||
#include "sim-assert.h"
|
||||
|
||||
/* start-sanitize-am30 */
|
||||
#if WITH_HW
|
||||
#include "sim-hw.h"
|
||||
#endif
|
||||
/* end-sanitize-am30 */
|
||||
|
||||
#include "libiberty.h"
|
||||
|
||||
/* List of all modules. */
|
||||
@ -50,11 +56,16 @@ static MODULE_INSTALL_FN * const modules[] = {
|
||||
scache_install,
|
||||
#endif
|
||||
#ifdef SIM_HAVE_MODEL
|
||||
model_install,
|
||||
sim_model_install,
|
||||
#endif
|
||||
#ifdef SIM_HAVE_BREAKPOINTS
|
||||
sim_break_install,
|
||||
#endif
|
||||
/* start-sanitize-am30 */
|
||||
#if WITH_HW
|
||||
sim_hw_install,
|
||||
#endif
|
||||
/* end-sanitize-am30 */
|
||||
/* Configured in [simulator specific] additional modules. */
|
||||
#ifdef MODULE_LIST
|
||||
MODULE_LIST
|
||||
|
||||
Reference in New Issue
Block a user