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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [sim/] [common/] [sim-hw.c] - Blame information for rev 833

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/* Simulator hardware option handling.
   Copyright (C) 1998, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
   Contributed by Cygnus Support and Andrew Cagney.
 
This file is part of GDB, the GNU debugger.
 
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 3 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, see <http://www.gnu.org/licenses/>.  */
 
#include "sim-main.h"
#include "sim-assert.h"
#include "sim-options.h"
 
#include "sim-hw.h"
 
#include "hw-tree.h"
#include "hw-device.h"
#include "hw-main.h"
#include "hw-base.h"
 
 
#ifdef HAVE_STRING_H
#include <string.h>
#else
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <ctype.h>
#include <errno.h>
 
 
struct sim_hw {
  struct hw *tree;
  int trace_p;
  int info_p;
  /* if called from a processor */
  sim_cpu *cpu;
  sim_cia cia;
};
 
 
struct hw *
sim_hw_parse (struct sim_state *sd,
              const char *fmt,
              ...)
{
  struct hw *current;
  va_list ap;
  va_start (ap, fmt);
  current = hw_tree_vparse (STATE_HW (sd)->tree, fmt, ap);
  va_end (ap);
  return current;
}
 
struct printer {
  struct sim_state *file;
  void (*print) (struct sim_state *, const char *, va_list ap);
};
 
static void
do_print (void *file, const char *fmt, ...)
{
  struct printer *p = file;
  va_list ap;
  va_start (ap, fmt);
  p->print (p->file, fmt, ap);
  va_end (ap);
}
 
void
sim_hw_print (struct sim_state *sd,
              void (*print) (struct sim_state *, const char *, va_list ap))
{
  struct printer p;
  p.file = sd;
  p.print = print;
  hw_tree_print (STATE_HW (sd)->tree, do_print, &p);
}
 
 
 
 
/* command line options. */
 
enum {
  OPTION_HW_INFO = OPTION_START,
  OPTION_HW_TRACE,
  OPTION_HW_DEVICE,
  OPTION_HW_LIST,
  OPTION_HW_FILE,
};
 
static DECLARE_OPTION_HANDLER (hw_option_handler);
 
static const OPTION hw_options[] =
{
  { {"hw-info", no_argument, NULL, OPTION_HW_INFO },
      '\0', NULL, "List configurable hw regions",
      hw_option_handler },
  { {"info-hw", no_argument, NULL, OPTION_HW_INFO },
      '\0', NULL, NULL,
      hw_option_handler },
 
  { {"hw-trace", optional_argument, NULL, OPTION_HW_TRACE },
      '\0', "on|off", "Trace all hardware devices",
      hw_option_handler },
  { {"trace-hw", optional_argument, NULL, OPTION_HW_TRACE },
      '\0', NULL, NULL,
      hw_option_handler },
 
  { {"hw-device", required_argument, NULL, OPTION_HW_DEVICE },
      '\0', "DEVICE", "Add the specified device",
      hw_option_handler },
 
  { {"hw-list", no_argument, NULL, OPTION_HW_LIST },
      '\0', NULL, "List the device tree",
      hw_option_handler },
 
  { {"hw-file", required_argument, NULL, OPTION_HW_FILE },
      '\0', "FILE", "Add the devices listed in the file",
      hw_option_handler },
 
  { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
};
 
 
 
/* Copied from ../ppc/psim.c:psim_merge_device_file() */
 
static SIM_RC
merge_device_file (struct sim_state *sd,
                   const char *file_name)
{
  FILE *description;
  struct hw *current = STATE_HW (sd)->tree;
  int line_nr;
  char device_path[1000];
 
  /* try opening the file */
  description = fopen (file_name, "r");
  if (description == NULL)
    {
      perror (file_name);
      return SIM_RC_FAIL;
    }
 
  line_nr = 0;
  while (fgets (device_path, sizeof(device_path), description))
    {
      char *device;
      /* check that a complete line was read */
      if (strchr (device_path, '\n') == NULL)
        {
          fclose (description);
          sim_io_eprintf (sd, "%s:%d: line to long", file_name, line_nr);
          return SIM_RC_FAIL;
        }
      *strchr (device_path, '\n') = '\0';
      line_nr++;
      /* skip comments ("#" or ";") and blank lines lines */
      for (device = device_path;
           *device != '\0' && isspace (*device);
           device++);
      if (device[0] == '#'
          || device[0] == ';'
          || device[0] == '\0')
        continue;
      /* merge any appended lines */
      while (device_path[strlen (device_path) - 1] == '\\')
        {
          int curlen = strlen (device_path) - 1;
          /* zap the `\' at the end of the line */
          device_path[curlen] = '\0';
          /* append the next line */
          if (!fgets (device_path + curlen,
                      sizeof (device_path) - curlen,
                      description))
            {
              fclose (description);
              sim_io_eprintf (sd, "%s:%d: unexpected eof", file_name, line_nr);
              return SIM_RC_FAIL;
            }
          if (strchr(device_path, '\n') == NULL)
            {
              fclose(description);
              sim_io_eprintf (sd, "%s:%d: line to long", file_name, line_nr);
              return SIM_RC_FAIL;
            }
          *strchr(device_path, '\n') = '\0';
          line_nr++;
        }
      /* parse this line */
      current = hw_tree_parse (current, "%s", device);
    }
  fclose (description);
  return SIM_RC_OK;
}
 
 
static SIM_RC
hw_option_handler (struct sim_state *sd, sim_cpu *cpu, int opt,
                   char *arg, int is_command)
{
  switch (opt)
    {
 
    case OPTION_HW_INFO:
      {
        /* delay info until after the tree is finished */
        STATE_HW (sd)->info_p = 1;
        return SIM_RC_OK;
        break;
      }
 
    case OPTION_HW_TRACE:
      {
        if (arg == NULL)
          {
            STATE_HW (sd)->trace_p = 1;
          }
        else if (strcmp (arg, "yes") == 0
                 || strcmp (arg, "on") == 0)
          {
            STATE_HW (sd)->trace_p = 1;
          }
        else if (strcmp (arg, "no") == 0
                 || strcmp (arg, "off") == 0)
          {
            STATE_HW (sd)->trace_p = 0;
          }
        else
          {
            sim_io_eprintf (sd, "Option --hw-trace ignored\n");
            /* set tracing on all devices */
            return SIM_RC_FAIL;
          }
        /* FIXME: Not very nice - see also hw-base.c */
        if (STATE_HW (sd)->trace_p)
          hw_tree_parse (STATE_HW (sd)->tree, "/global-trace? true");
        return SIM_RC_OK;
        break;
      }
 
    case OPTION_HW_DEVICE:
      {
        hw_tree_parse (STATE_HW (sd)->tree, arg);
        return SIM_RC_OK;
      }
 
    case OPTION_HW_LIST:
      {
        sim_hw_print (sd, sim_io_vprintf);
        return SIM_RC_OK;
      }
 
    case OPTION_HW_FILE:
      {
        return merge_device_file (sd, arg);
      }
 
    default:
      sim_io_eprintf (sd, "Unknown hw option %d\n", opt);
      return SIM_RC_FAIL;
 
    }
 
  return SIM_RC_FAIL;
}
 
 
/* "hw" module install handler.
 
   This is called via sim_module_install to install the "hw" subsystem
   into the simulator.  */
 
static MODULE_INIT_FN sim_hw_init;
static MODULE_UNINSTALL_FN sim_hw_uninstall;
 
SIM_RC
sim_hw_install (struct sim_state *sd)
{
  SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  sim_add_option_table (sd, NULL, hw_options);
  sim_module_add_uninstall_fn (sd, sim_hw_uninstall);
  sim_module_add_init_fn (sd, sim_hw_init);
  STATE_HW (sd) = ZALLOC (struct sim_hw);
  STATE_HW (sd)->tree = hw_tree_create (sd, "core");
  return SIM_RC_OK;
}
 
 
static SIM_RC
sim_hw_init (struct sim_state *sd)
{
  /* FIXME: anything needed? */
  hw_tree_finish (STATE_HW (sd)->tree);
  if (STATE_HW (sd)->info_p)
    sim_hw_print (sd, sim_io_vprintf);
  return SIM_RC_OK;
}
 
/* Uninstall the "hw" subsystem from the simulator.  */
 
static void
sim_hw_uninstall (struct sim_state *sd)
{
  /* hw_tree_delete (STATE_HW (sd)->tree); */
  zfree (STATE_HW (sd));
  STATE_HW (sd) = NULL;
}
 
 
 
/* Data transfers to/from the hardware device tree.  There are several
   cases. */
 
 
/* CPU: The simulation is running and the current CPU/CIA
   initiates a data transfer. */
 
void
sim_cpu_hw_io_read_buffer (sim_cpu *cpu,
                           sim_cia cia,
                           struct hw *hw,
                           void *dest,
                           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_read_buffer (hw, dest, space, addr, nr_bytes) != nr_bytes)
    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
    }
}

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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [sim/] [common/] [sim-hw.c] - Blame information for rev 833

Line No.	Rev	Author	Line
1	227	jeremybenn	`/* Simulator hardware option handling.`
2			`Copyright (C) 1998, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.`
3			`Contributed by Cygnus Support and Andrew Cagney.`
4
5			`This file is part of GDB, the GNU debugger.`
6
7			`This program is free software; you can redistribute it and/or modify`
8			`it under the terms of the GNU General Public License as published by`
9			`the Free Software Foundation; either version 3 of the License, or`
10			`(at your option) any later version.`
11
12			`This program is distributed in the hope that it will be useful,`
13			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
14			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
15			`GNU General Public License for more details.`
16
17			`You should have received a copy of the GNU General Public License`
18			`along with this program. If not, see <http://www.gnu.org/licenses/>. */`
19
20			`#include "sim-main.h"`
21			`#include "sim-assert.h"`
22			`#include "sim-options.h"`
23
24			`#include "sim-hw.h"`
25
26			`#include "hw-tree.h"`
27			`#include "hw-device.h"`
28			`#include "hw-main.h"`
29			`#include "hw-base.h"`
30
31
32			`#ifdef HAVE_STRING_H`
33			`#include <string.h>`
34			`#else`
35			`#ifdef HAVE_STRINGS_H`
36			`#include <strings.h>`
37			`#endif`
38			`#endif`
39			`#ifdef HAVE_STDLIB_H`
40			`#include <stdlib.h>`
41			`#endif`
42			`#include <ctype.h>`
43			`#include <errno.h>`
44
45
46			`struct sim_hw {`
47			`struct hw *tree;`
48			`int trace_p;`
49			`int info_p;`
50			`/* if called from a processor */`
51			`sim_cpu *cpu;`
52			`sim_cia cia;`
53			`};`
54
55
56			`struct hw *`
57			`sim_hw_parse (struct sim_state *sd,`
58			`const char *fmt,`
59			`...)`
60			`{`
61			`struct hw *current;`
62			`va_list ap;`
63			`va_start (ap, fmt);`
64			`current = hw_tree_vparse (STATE_HW (sd)->tree, fmt, ap);`
65			`va_end (ap);`
66			`return current;`
67			`}`
68
69			`struct printer {`
70			`struct sim_state *file;`
71			`void (print) (struct sim_state , const char *, va_list ap);`
72			`};`
73
74			`static void`
75			`do_print (void file, const char fmt, ...)`
76			`{`
77			`struct printer *p = file;`
78			`va_list ap;`
79			`va_start (ap, fmt);`
80			`p->print (p->file, fmt, ap);`
81			`va_end (ap);`
82			`}`
83
84			`void`
85			`sim_hw_print (struct sim_state *sd,`
86			`void (print) (struct sim_state , const char *, va_list ap))`
87			`{`
88			`struct printer p;`
89			`p.file = sd;`
90			`p.print = print;`
91			`hw_tree_print (STATE_HW (sd)->tree, do_print, &p);`
92			`}`
93
94
95
96
97			`/* command line options. */`
98
99			`enum {`
100			`OPTION_HW_INFO = OPTION_START,`
101			`OPTION_HW_TRACE,`
102			`OPTION_HW_DEVICE,`
103			`OPTION_HW_LIST,`
104			`OPTION_HW_FILE,`
105			`};`
106
107			`static DECLARE_OPTION_HANDLER (hw_option_handler);`
108
109			`static const OPTION hw_options[] =`
110			`{`
111			`{ {"hw-info", no_argument, NULL, OPTION_HW_INFO },`
112			`'\0', NULL, "List configurable hw regions",`
113			`hw_option_handler },`
114			`{ {"info-hw", no_argument, NULL, OPTION_HW_INFO },`
115			`'\0', NULL, NULL,`
116			`hw_option_handler },`
117
118			`{ {"hw-trace", optional_argument, NULL, OPTION_HW_TRACE },`
119			`'\0', "on\|off", "Trace all hardware devices",`
120			`hw_option_handler },`
121			`{ {"trace-hw", optional_argument, NULL, OPTION_HW_TRACE },`
122			`'\0', NULL, NULL,`
123			`hw_option_handler },`
124
125			`{ {"hw-device", required_argument, NULL, OPTION_HW_DEVICE },`
126			`'\0', "DEVICE", "Add the specified device",`
127			`hw_option_handler },`
128
129			`{ {"hw-list", no_argument, NULL, OPTION_HW_LIST },`
130			`'\0', NULL, "List the device tree",`
131			`hw_option_handler },`
132
133			`{ {"hw-file", required_argument, NULL, OPTION_HW_FILE },`
134			`'\0', "FILE", "Add the devices listed in the file",`
135			`hw_option_handler },`
136
137			`{ {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }`
138			`};`
139
140
141
142			`/* Copied from ../ppc/psim.c:psim_merge_device_file() */`
143
144			`static SIM_RC`
145			`merge_device_file (struct sim_state *sd,`
146			`const char *file_name)`
147			`{`
148			`FILE *description;`
149			`struct hw *current = STATE_HW (sd)->tree;`
150			`int line_nr;`
151			`char device_path[1000];`
152
153			`/* try opening the file */`
154			`description = fopen (file_name, "r");`
155			`if (description == NULL)`
156			`{`
157			`perror (file_name);`
158			`return SIM_RC_FAIL;`
159			`}`
160
161			`line_nr = 0;`
162			`while (fgets (device_path, sizeof(device_path), description))`
163			`{`
164			`char *device;`
165			`/* check that a complete line was read */`
166			`if (strchr (device_path, '\n') == NULL)`
167			`{`
168			`fclose (description);`
169			`sim_io_eprintf (sd, "%s:%d: line to long", file_name, line_nr);`
170			`return SIM_RC_FAIL;`
171			`}`
172			`*strchr (device_path, '\n') = '\0';`
173			`line_nr++;`
174			`/* skip comments ("#" or ";") and blank lines lines */`
175			`for (device = device_path;`
176			`device != '\0' && isspace (device);`
177			`device++);`
178			`if (device[0] == '#'`
179			`\|\| device[0] == ';'`
180			`\|\| device[0] == '\0')`
181			`continue;`
182			`/* merge any appended lines */`
183			`while (device_path[strlen (device_path) - 1] == '\\')`
184			`{`
185			`int curlen = strlen (device_path) - 1;`
186			/* zap the `\' at the end of the line */
187			`device_path[curlen] = '\0';`
188			`/* append the next line */`
189			`if (!fgets (device_path + curlen,`
190			`sizeof (device_path) - curlen,`
191			`description))`
192			`{`
193			`fclose (description);`
194			`sim_io_eprintf (sd, "%s:%d: unexpected eof", file_name, line_nr);`
195			`return SIM_RC_FAIL;`
196			`}`
197			`if (strchr(device_path, '\n') == NULL)`
198			`{`
199			`fclose(description);`
200			`sim_io_eprintf (sd, "%s:%d: line to long", file_name, line_nr);`
201			`return SIM_RC_FAIL;`
202			`}`
203			`*strchr(device_path, '\n') = '\0';`
204			`line_nr++;`
205			`}`
206			`/* parse this line */`
207			`current = hw_tree_parse (current, "%s", device);`
208			`}`
209			`fclose (description);`
210			`return SIM_RC_OK;`
211			`}`
212
213
214			`static SIM_RC`
215			`hw_option_handler (struct sim_state sd, sim_cpu cpu, int opt,`
216			`char *arg, int is_command)`
217			`{`
218			`switch (opt)`
219			`{`
220
221			`case OPTION_HW_INFO:`
222			`{`
223			`/* delay info until after the tree is finished */`
224			`STATE_HW (sd)->info_p = 1;`
225			`return SIM_RC_OK;`
226			`break;`
227			`}`
228
229			`case OPTION_HW_TRACE:`
230			`{`
231			`if (arg == NULL)`
232			`{`
233			`STATE_HW (sd)->trace_p = 1;`
234			`}`
235			`else if (strcmp (arg, "yes") == 0`
236			`\|\| strcmp (arg, "on") == 0)`
237			`{`
238			`STATE_HW (sd)->trace_p = 1;`
239			`}`
240			`else if (strcmp (arg, "no") == 0`
241			`\|\| strcmp (arg, "off") == 0)`
242			`{`
243			`STATE_HW (sd)->trace_p = 0;`
244			`}`
245			`else`
246			`{`
247			`sim_io_eprintf (sd, "Option --hw-trace ignored\n");`
248			`/* set tracing on all devices */`
249			`return SIM_RC_FAIL;`
250			`}`
251			`/* FIXME: Not very nice - see also hw-base.c */`
252			`if (STATE_HW (sd)->trace_p)`
253			`hw_tree_parse (STATE_HW (sd)->tree, "/global-trace? true");`
254			`return SIM_RC_OK;`
255			`break;`
256			`}`
257
258			`case OPTION_HW_DEVICE:`
259			`{`
260			`hw_tree_parse (STATE_HW (sd)->tree, arg);`
261			`return SIM_RC_OK;`
262			`}`
263
264			`case OPTION_HW_LIST:`
265			`{`
266			`sim_hw_print (sd, sim_io_vprintf);`
267			`return SIM_RC_OK;`
268			`}`
269
270			`case OPTION_HW_FILE:`
271			`{`
272			`return merge_device_file (sd, arg);`
273			`}`
274
275			`default:`
276			`sim_io_eprintf (sd, "Unknown hw option %d\n", opt);`
277			`return SIM_RC_FAIL;`
278
279			`}`
280
281			`return SIM_RC_FAIL;`
282			`}`
283
284
285			`/* "hw" module install handler.`
286
287			`This is called via sim_module_install to install the "hw" subsystem`
288			`into the simulator. */`
289
290			`static MODULE_INIT_FN sim_hw_init;`
291			`static MODULE_UNINSTALL_FN sim_hw_uninstall;`
292
293			`SIM_RC`
294			`sim_hw_install (struct sim_state *sd)`
295			`{`
296			`SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);`
297			`sim_add_option_table (sd, NULL, hw_options);`
298			`sim_module_add_uninstall_fn (sd, sim_hw_uninstall);`
299			`sim_module_add_init_fn (sd, sim_hw_init);`
300			`STATE_HW (sd) = ZALLOC (struct sim_hw);`
301			`STATE_HW (sd)->tree = hw_tree_create (sd, "core");`
302			`return SIM_RC_OK;`
303			`}`
304
305
306			`static SIM_RC`
307			`sim_hw_init (struct sim_state *sd)`
308			`{`
309			`/* FIXME: anything needed? */`
310			`hw_tree_finish (STATE_HW (sd)->tree);`
311			`if (STATE_HW (sd)->info_p)`
312			`sim_hw_print (sd, sim_io_vprintf);`
313			`return SIM_RC_OK;`
314			`}`
315
316			`/* Uninstall the "hw" subsystem from the simulator. */`
317
318			`static void`
319			`sim_hw_uninstall (struct sim_state *sd)`
320			`{`
321			`/* hw_tree_delete (STATE_HW (sd)->tree); */`
322			`zfree (STATE_HW (sd));`
323			`STATE_HW (sd) = NULL;`
324			`}`
325
326
327
328			`/* Data transfers to/from the hardware device tree. There are several`
329			`cases. */`
330
331
332			`/* CPU: The simulation is running and the current CPU/CIA`
333			`initiates a data transfer. */`
334
335			`void`
336			`sim_cpu_hw_io_read_buffer (sim_cpu *cpu,`
337			`sim_cia cia,`
338			`struct hw *hw,`
339			`void *dest,`
340			`int space,`
341			`unsigned_word addr,`
342			`unsigned nr_bytes)`
343			`{`
344			`SIM_DESC sd = CPU_STATE (cpu);`
345			`STATE_HW (sd)->cpu = cpu;`
346			`STATE_HW (sd)->cia = cia;`
347			`if (hw_io_read_buffer (hw, dest, space, addr, nr_bytes) != nr_bytes)`
348			`sim_engine_abort (sd, cpu, cia, "broken CPU read");`
349			`}`
350
351			`void`
352			`sim_cpu_hw_io_write_buffer (sim_cpu *cpu,`
353			`sim_cia cia,`
354			`struct hw *hw,`
355			`const void *source,`
356			`int space,`
357			`unsigned_word addr,`
358			`unsigned nr_bytes)`
359			`{`
360			`SIM_DESC sd = CPU_STATE (cpu);`
361			`STATE_HW (sd)->cpu = cpu;`
362			`STATE_HW (sd)->cia = cia;`
363			`if (hw_io_write_buffer (hw, source, space, addr, nr_bytes) != nr_bytes)`
364			`sim_engine_abort (sd, cpu, cia, "broken CPU write");`
365			`}`
366
367
368
369
370			`/* SYSTEM: A data transfer is being initiated by the system. */`
371
372			`unsigned`
373			`sim_hw_io_read_buffer (struct sim_state *sd,`
374			`struct hw *hw,`
375			`void *dest,`
376			`int space,`
377			`unsigned_word addr,`
378			`unsigned nr_bytes)`
379			`{`
380			`STATE_HW (sd)->cpu = NULL;`
381			`return hw_io_read_buffer (hw, dest, space, addr, nr_bytes);`
382			`}`
383
384			`unsigned`
385			`sim_hw_io_write_buffer (struct sim_state *sd,`
386			`struct hw *hw,`
387			`const void *source,`
388			`int space,`
389			`unsigned_word addr,`
390			`unsigned nr_bytes)`
391			`{`
392			`STATE_HW (sd)->cpu = NULL;`
393			`return hw_io_write_buffer (hw, source, space, addr, nr_bytes);`
394			`}`
395
396
397
398			`/* Abort the simulation specifying HW as the reason */`
399
400			`void`
401			`hw_vabort (struct hw *me,`
402			`const char *fmt,`
403			`va_list ap)`
404			`{`
405			`const char *name;`
406			`char *msg;`
407			`/* find an identity */`
408			`if (me != NULL && hw_path (me) != NULL && hw_path (me) [0] != '\0')`
409			`name = hw_path (me);`
410			`else if (me != NULL && hw_name (me) != NULL && hw_name (me)[0] != '\0')`
411			`name = hw_name (me);`
412			`else if (me != NULL && hw_family (me) != NULL && hw_family (me)[0] != '\0')`
413			`name = hw_family (me);`
414			`else`
415			`name = "device";`
416			`/* construct an updated format string */`
417			`msg = alloca (strlen (name) + strlen (": ") + strlen (fmt) + 1);`
418			`strcpy (msg, name);`
419			`strcat (msg, ": ");`
420			`strcat (msg, fmt);`
421			`/* report the problem */`
422			`sim_engine_vabort (hw_system (me),`
423			`STATE_HW (hw_system (me))->cpu,`
424			`STATE_HW (hw_system (me))->cia,`
425			`msg, ap);`
426			`}`
427
428			`void`
429			`hw_abort (struct hw *me,`
430			`const char *fmt,`
431			`...)`
432			`{`
433			`va_list ap;`
434			`/* report the problem */`
435			`va_start (ap, fmt);`
436			`hw_vabort (me, fmt, ap);`
437			`va_end (ap);`
438			`}`
439
440			`void`
441			`sim_hw_abort (struct sim_state *sd,`
442			`struct hw *me,`
443			`const char *fmt,`
444			`...)`
445			`{`
446			`va_list ap;`
447			`va_start (ap, fmt);`
448			`if (me == NULL)`
449			`sim_engine_vabort (sd, NULL, NULL_CIA, fmt, ap);`
450			`else`
451			`hw_vabort (me, fmt, ap);`
452			`va_end (ap);`
453			`}`
454
455
456			`/* MISC routines to tie HW into the rest of the system */`
457
458			`void`
459			`hw_halt (struct hw *me,`
460			`int reason,`
461			`int status)`
462			`{`
463			`struct sim_state *sd = hw_system (me);`
464			`struct sim_hw *sim = STATE_HW (sd);`
465			`sim_engine_halt (sd, sim->cpu, NULL, sim->cia, reason, status);`
466			`}`
467
468			`struct _sim_cpu *`
469			`hw_system_cpu (struct hw *me)`
470			`{`
471			`return STATE_HW (hw_system (me))->cpu;`
472			`}`
473
474			`void`
475			`hw_trace (struct hw *me,`
476			`const char *fmt,`
477			`...)`
478			`{`
479			`if (hw_trace_p (me)) /* to be sure, to be sure */`
480			`{`
481			`va_list ap;`
482			`va_start (ap, fmt);`
483			`sim_io_eprintf (hw_system (me), "%s: ", hw_path (me));`
484			`sim_io_evprintf (hw_system (me), fmt, ap);`
485			`sim_io_eprintf (hw_system (me), "\n");`
486			`va_end (ap);`
487			`}`
488			`}`
489
490
491			`/* Based on gdb-4.17/sim/ppc/main.c:sim_io_read_stdin() */`
492
493			`int`
494			`do_hw_poll_read (struct hw *me,`
495			`do_hw_poll_read_method *read,`
496			`int sim_io_fd,`
497			`void *buf,`
498			`unsigned sizeof_buf)`
499			`{`
500			`int status = read (hw_system (me), sim_io_fd, buf, sizeof_buf);`
501			`if (status > 0)`
502			`return status;`
503			`else if (status == 0 && sizeof_buf == 0)`
504			`return 0;`
505			`else if (status == 0)`
506			`return HW_IO_EOF;`
507			`else /* status < 0 */`
508			`{`
509			`#ifdef EAGAIN`
510			`if (STATE_CALLBACK (hw_system (me))->last_errno == EAGAIN)`
511			`return HW_IO_NOT_READY;`
512			`else`
513			`return HW_IO_EOF;`
514			`#else`
515			`return HW_IO_EOF;`
516			`#endif`
517			`}`
518			`}`