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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.1/] [sim/] [ppc/] [emul_generic.c] - Blame information for rev 281

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/*  This file is part of the program psim.
 
    Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
 
    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.
 
    */
 
 
#ifndef _EMUL_GENERIC_C_
#define _EMUL_GENERIC_C_
 
#include "emul_generic.h"
 
#ifndef STATIC_INLINE_EMUL_GENERIC
#define STATIC_INLINE_EMUL_GENERIC STATIC_INLINE
#endif
 
 
STATIC_INLINE_EMUL_GENERIC void
emul_syscall_enter(emul_syscall *emul,
                   int call,
                   int arg0,
                   cpu *processor,
                   unsigned_word cia)
{
  printf_filtered("%d:0x%lx:%s(",
                  cpu_nr(processor) + 1,
                  (long)cia,
                  emul->syscall_descriptor[call].name);
}
 
 
STATIC_INLINE_EMUL_GENERIC void
emul_syscall_exit(emul_syscall *emul,
                  int call,
                  int arg0,
                  cpu *processor,
                  unsigned_word cia)
{
  int status = cpu_registers(processor)->gpr[3];
  int error = cpu_registers(processor)->gpr[0];
  printf_filtered(")=%d", status);
  if (error > 0 && error < emul->nr_error_names)
    printf_filtered("[%s]", emul->error_names[error]);
  printf_filtered("\n");
}
 
 
INLINE_EMUL_GENERIC unsigned64
emul_read_gpr64(cpu *processor,
                int g)
{
  unsigned32 hi;
  unsigned32 lo;
  if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) {
    hi = cpu_registers(processor)->gpr[g];
    lo = cpu_registers(processor)->gpr[g+1];
  }
  else {
    lo = cpu_registers(processor)->gpr[g];
    hi = cpu_registers(processor)->gpr[g+1];
  }
  return (INSERTED64(hi, 0, 31) | INSERTED64(lo, 32, 63));
}
 
 
INLINE_EMUL_GENERIC void
emul_write_gpr64(cpu *processor,
                 int g,
                 unsigned64 val)
{
  unsigned32 hi = EXTRACTED64(val, 0, 31);
  unsigned32 lo = EXTRACTED64(val, 32, 63);
  if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) {
    cpu_registers(processor)->gpr[g] = hi;
    cpu_registers(processor)->gpr[g+1] = lo;
  }
  else {
    cpu_registers(processor)->gpr[g] = lo;
    cpu_registers(processor)->gpr[g+1] = hi;
  }
}
 
 
INLINE_EMUL_GENERIC char *
emul_read_string(char *dest,
                 unsigned_word addr,
                 unsigned nr_bytes,
                 cpu *processor,
                 unsigned_word cia)
{
  unsigned nr_moved = 0;
  if (addr == 0)
    return NULL;
  while (1) {
    dest[nr_moved] = vm_data_map_read_1(cpu_data_map(processor),
                                        addr + nr_moved,
                                        processor, cia);
    if (dest[nr_moved] == '\0' || nr_moved >= nr_bytes)
      break;
    nr_moved++;
  }
  dest[nr_moved] = '\0';
  return dest;
}
 
 
INLINE_EMUL_GENERIC void
emul_write_status(cpu *processor,
                  int status,
                  int errno)
{
  if (status == -1 && errno != 0) {
    cpu_registers(processor)->gpr[3] = errno;
    CR_SET(0, cr_i_summary_overflow);
  }
  else {
    cpu_registers(processor)->gpr[3] = status;
    CR_SET(0, 0);
  }
}
 
 
INLINE_EMUL_GENERIC void
emul_write2_status(cpu *processor,
                   int status1,
                   int status2,
                   int errno)
{
  if (status1 == -1 && errno != 0) {
    cpu_registers(processor)->gpr[3] = errno;
    CR_SET(0, cr_i_summary_overflow);
  }
  else {
    cpu_registers(processor)->gpr[3] = status1;
    cpu_registers(processor)->gpr[4] = status2;
    CR_SET(0, 0);
  }
}
 
 
INLINE_EMUL_GENERIC unsigned_word
emul_read_word(unsigned_word addr,
               cpu *processor,
               unsigned_word cia)
{
  return vm_data_map_read_word(cpu_data_map(processor),
                               addr,
                               processor, cia);
}
 
 
INLINE_EMUL_GENERIC void
emul_write_word(unsigned_word addr,
                unsigned_word buf,
                cpu *processor,
                unsigned_word cia)
{
  vm_data_map_write_word(cpu_data_map(processor),
                         addr,
                         buf,
                         processor, cia);
}
 
 
INLINE_EMUL_GENERIC void
emul_write_buffer(const void *source,
                  unsigned_word addr,
                  unsigned nr_bytes,
                  cpu *processor,
                  unsigned_word cia)
{
  int nr_moved;
  for (nr_moved = 0; nr_moved < nr_bytes; nr_moved++) {
    vm_data_map_write_1(cpu_data_map(processor),
                        addr + nr_moved,
                        ((const char*)source)[nr_moved],
                        processor, cia);
  }
}
 
 
INLINE_EMUL_GENERIC void
emul_read_buffer(void *dest,
                 unsigned_word addr,
                 unsigned nr_bytes,
                 cpu *processor,
                 unsigned_word cia)
{
  int nr_moved;
  for (nr_moved = 0; nr_moved < nr_bytes; nr_moved++) {
    ((char*)dest)[nr_moved] = vm_data_map_read_1(cpu_data_map(processor),
                                                 addr + nr_moved,
                                                 processor, cia);
  }
}
 
 
INLINE_EMUL_GENERIC void
emul_do_system_call(os_emul_data *emul_data,
                    emul_syscall *emul,
                    unsigned call,
                    const int arg0,
                    cpu *processor,
                    unsigned_word cia)
{
  emul_syscall_handler *handler = NULL;
  if (call >= emul->nr_system_calls)
    error("do_call() os_emul call %d out-of-range\n", call);
 
  handler = emul->syscall_descriptor[call].handler;
  if (handler == NULL) {
    if (emul->syscall_descriptor[call].name) {
      error("do_call() unimplemented call %s\n", emul->syscall_descriptor[call].name);
    } else {
      error("do_call() unimplemented call %d\n", call);
    }
  }
 
  if (WITH_TRACE && ppc_trace[trace_os_emul])
    emul_syscall_enter(emul, call, arg0, processor, cia);
 
  cpu_registers(processor)->gpr[0] = 0; /* default success */
  handler(emul_data, call, arg0, processor, cia);
 
  if (WITH_TRACE && ppc_trace[trace_os_emul])
    emul_syscall_exit(emul, call, arg0, processor, cia);
}
 
 
/* default size for the first bank of memory */
 
#ifndef OEA_MEMORY_SIZE
#define OEA_MEMORY_SIZE 0x100000
#endif
 
 
/* Add options to the device tree */
 
INLINE_EMUL_GENERIC void
emul_add_tree_options(device *tree,
                      bfd *image,
                      const char *emul,
                      const char *env,
                      int oea_interrupt_prefix)
{
  int little_endian = 0;
 
  /* sort out little endian */
  if (tree_find_property(tree, "/options/little-endian?"))
    little_endian = tree_find_boolean_property(tree, "/options/little-endian?");
  else {
#ifdef bfd_little_endian        /* new bfd */
    little_endian = (image != NULL && bfd_little_endian(image));
#else
    little_endian = (image != NULL &&
                     !image->xvec->byteorder_big_p);
#endif
    tree_parse(tree, "/options/little-endian? %s",
               little_endian ? "true" : "false");
  }
 
  /* misc other stuff */
  tree_parse(tree, "/openprom/options/oea-memory-size 0x%x",
             OEA_MEMORY_SIZE);
  tree_parse(tree, "/openprom/options/oea-interrupt-prefix %d",
             oea_interrupt_prefix);
  tree_parse(tree, "/openprom/options/smp 1");
  tree_parse(tree, "/openprom/options/env %s", env);
  tree_parse(tree, "/openprom/options/os-emul %s", emul);
  tree_parse(tree, "/openprom/options/strict-alignment? %s",
             (WITH_ALIGNMENT == STRICT_ALIGNMENT)
             ? "true" : "false");
  tree_parse(tree, "/openprom/options/floating-point? %s",
             WITH_FLOATING_POINT ? "true" : "false");
  tree_parse(tree, "/openprom/options/use-stdio? %s",
             ((WITH_STDIO == DO_USE_STDIO
               || WITH_STDIO == 0)
              ? "true" : "false"));
  tree_parse(tree, "/openprom/options/model \"%s",
             model_name[WITH_DEFAULT_MODEL]);
  tree_parse(tree, "/openprom/options/model-issue %d",
             MODEL_ISSUE_IGNORE);
 
  /* useful options */
}
 
INLINE_EMUL_GENERIC void
emul_add_tree_hardware(device *root)
{
  int i;
  int nr_cpus = tree_find_integer_property(root, "/openprom/options/smp");
 
  /* sanity check the number of processors */
  if (nr_cpus > MAX_NR_PROCESSORS)
    error("Specified number of processors (%d) exceeds the number configured (%d).\n",
          nr_cpus, MAX_NR_PROCESSORS);
 
  /* set the number of address cells (1 or 2) */
  tree_parse(root, "#address-cells %d", WITH_TARGET_WORD_BITSIZE / 32);
 
  /* add some memory */
  if (tree_find_device(root, "/memory") == NULL) {
    unsigned_word memory_size =
      tree_find_integer_property(root, "/openprom/options/oea-memory-size");
    const unsigned_word avail_start = 0x3000;
    tree_parse(root, "/memory@0/reg 0x0 0x%lx",
               (unsigned long)memory_size);
    /* reserve the first 0x3000 for the PowerPC interrupt table */
    tree_parse(root, "/memory@0/available 0x%lx  0x%lx",
               (unsigned long)avail_start,
               (unsigned long)memory_size - avail_start);
  }
 
  /* our processors */
  for (i = 0; i < nr_cpus; i++) {
    tree_parse(root, "/cpus/cpu@%d/cpu-nr %d", i, i);
  }
 
  /* the debugging pal - hide it in the openprom and don't attach it
     to any bus */
  tree_parse(root, "/openprom/pal");
 
  /* chosen etc */
  tree_parse(root, "/chosen/stdin */openprom/pal");
  tree_parse(root, "/chosen/stdout !/chosen/stdin");
  tree_parse(root, "/chosen/memory */memory");
}
 
#endif /* _EMUL_GENERIC_C_ */

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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.1/] [sim/] [ppc/] [emul_generic.c] - Blame information for rev 281

Line No.	Rev	Author	Line
1	227	jeremybenn	`/* This file is part of the program psim.`
2
3			`Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>`
4
5			`This program is free software; you can redistribute it and/or modify`
6			`it under the terms of the GNU General Public License as published by`
7			`the Free Software Foundation; either version 2 of the License, or`
8			`(at your option) any later version.`
9
10			`This program is distributed in the hope that it will be useful,`
11			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
12			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
13			`GNU General Public License for more details.`
14
15			`You should have received a copy of the GNU General Public License`
16			`along with this program; if not, write to the Free Software`
17			`Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.`
18
19			`*/`
20
21
22			`#ifndef _EMUL_GENERIC_C_`
23			`#define _EMUL_GENERIC_C_`
24
25			`#include "emul_generic.h"`
26
27			`#ifndef STATIC_INLINE_EMUL_GENERIC`
28			`#define STATIC_INLINE_EMUL_GENERIC STATIC_INLINE`
29			`#endif`
30
31
32			`STATIC_INLINE_EMUL_GENERIC void`
33			`emul_syscall_enter(emul_syscall *emul,`
34			`int call,`
35			`int arg0,`
36			`cpu *processor,`
37			`unsigned_word cia)`
38			`{`
39			`printf_filtered("%d:0x%lx:%s(",`
40			`cpu_nr(processor) + 1,`
41			`(long)cia,`
42			`emul->syscall_descriptor[call].name);`
43			`}`
44
45
46			`STATIC_INLINE_EMUL_GENERIC void`
47			`emul_syscall_exit(emul_syscall *emul,`
48			`int call,`
49			`int arg0,`
50			`cpu *processor,`
51			`unsigned_word cia)`
52			`{`
53			`int status = cpu_registers(processor)->gpr[3];`
54			`int error = cpu_registers(processor)->gpr[0];`
55			`printf_filtered(")=%d", status);`
56			`if (error > 0 && error < emul->nr_error_names)`
57			`printf_filtered("[%s]", emul->error_names[error]);`
58			`printf_filtered("\n");`
59			`}`
60
61
62			`INLINE_EMUL_GENERIC unsigned64`
63			`emul_read_gpr64(cpu *processor,`
64			`int g)`
65			`{`
66			`unsigned32 hi;`
67			`unsigned32 lo;`
68			`if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) {`
69			`hi = cpu_registers(processor)->gpr[g];`
70			`lo = cpu_registers(processor)->gpr[g+1];`
71			`}`
72			`else {`
73			`lo = cpu_registers(processor)->gpr[g];`
74			`hi = cpu_registers(processor)->gpr[g+1];`
75			`}`
76			`return (INSERTED64(hi, 0, 31) \| INSERTED64(lo, 32, 63));`
77			`}`
78
79
80			`INLINE_EMUL_GENERIC void`
81			`emul_write_gpr64(cpu *processor,`
82			`int g,`
83			`unsigned64 val)`
84			`{`
85			`unsigned32 hi = EXTRACTED64(val, 0, 31);`
86			`unsigned32 lo = EXTRACTED64(val, 32, 63);`
87			`if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) {`
88			`cpu_registers(processor)->gpr[g] = hi;`
89			`cpu_registers(processor)->gpr[g+1] = lo;`
90			`}`
91			`else {`
92			`cpu_registers(processor)->gpr[g] = lo;`
93			`cpu_registers(processor)->gpr[g+1] = hi;`
94			`}`
95			`}`
96
97
98			`INLINE_EMUL_GENERIC char *`
99			`emul_read_string(char *dest,`
100			`unsigned_word addr,`
101			`unsigned nr_bytes,`
102			`cpu *processor,`
103			`unsigned_word cia)`
104			`{`
105			`unsigned nr_moved = 0;`
106			`if (addr == 0)`
107			`return NULL;`
108			`while (1) {`
109			`dest[nr_moved] = vm_data_map_read_1(cpu_data_map(processor),`
110			`addr + nr_moved,`
111			`processor, cia);`
112			`if (dest[nr_moved] == '\0' \|\| nr_moved >= nr_bytes)`
113			`break;`
114			`nr_moved++;`
115			`}`
116			`dest[nr_moved] = '\0';`
117			`return dest;`
118			`}`
119
120
121			`INLINE_EMUL_GENERIC void`
122			`emul_write_status(cpu *processor,`
123			`int status,`
124			`int errno)`
125			`{`
126			`if (status == -1 && errno != 0) {`
127			`cpu_registers(processor)->gpr[3] = errno;`
128			`CR_SET(0, cr_i_summary_overflow);`
129			`}`
130			`else {`
131			`cpu_registers(processor)->gpr[3] = status;`
132			`CR_SET(0, 0);`
133			`}`
134			`}`
135
136
137			`INLINE_EMUL_GENERIC void`
138			`emul_write2_status(cpu *processor,`
139			`int status1,`
140			`int status2,`
141			`int errno)`
142			`{`
143			`if (status1 == -1 && errno != 0) {`
144			`cpu_registers(processor)->gpr[3] = errno;`
145			`CR_SET(0, cr_i_summary_overflow);`
146			`}`
147			`else {`
148			`cpu_registers(processor)->gpr[3] = status1;`
149			`cpu_registers(processor)->gpr[4] = status2;`
150			`CR_SET(0, 0);`
151			`}`
152			`}`
153
154
155			`INLINE_EMUL_GENERIC unsigned_word`
156			`emul_read_word(unsigned_word addr,`
157			`cpu *processor,`
158			`unsigned_word cia)`
159			`{`
160			`return vm_data_map_read_word(cpu_data_map(processor),`
161			`addr,`
162			`processor, cia);`
163			`}`
164
165
166			`INLINE_EMUL_GENERIC void`
167			`emul_write_word(unsigned_word addr,`
168			`unsigned_word buf,`
169			`cpu *processor,`
170			`unsigned_word cia)`
171			`{`
172			`vm_data_map_write_word(cpu_data_map(processor),`
173			`addr,`
174			`buf,`
175			`processor, cia);`
176			`}`
177
178
179			`INLINE_EMUL_GENERIC void`
180			`emul_write_buffer(const void *source,`
181			`unsigned_word addr,`
182			`unsigned nr_bytes,`
183			`cpu *processor,`
184			`unsigned_word cia)`
185			`{`
186			`int nr_moved;`
187			`for (nr_moved = 0; nr_moved < nr_bytes; nr_moved++) {`
188			`vm_data_map_write_1(cpu_data_map(processor),`
189			`addr + nr_moved,`
190			`((const char*)source)[nr_moved],`
191			`processor, cia);`
192			`}`
193			`}`
194
195
196			`INLINE_EMUL_GENERIC void`
197			`emul_read_buffer(void *dest,`
198			`unsigned_word addr,`
199			`unsigned nr_bytes,`
200			`cpu *processor,`
201			`unsigned_word cia)`
202			`{`
203			`int nr_moved;`
204			`for (nr_moved = 0; nr_moved < nr_bytes; nr_moved++) {`
205			`((char*)dest)[nr_moved] = vm_data_map_read_1(cpu_data_map(processor),`
206			`addr + nr_moved,`
207			`processor, cia);`
208			`}`
209			`}`
210
211
212			`INLINE_EMUL_GENERIC void`
213			`emul_do_system_call(os_emul_data *emul_data,`
214			`emul_syscall *emul,`
215			`unsigned call,`
216			`const int arg0,`
217			`cpu *processor,`
218			`unsigned_word cia)`
219			`{`
220			`emul_syscall_handler *handler = NULL;`
221			`if (call >= emul->nr_system_calls)`
222			`error("do_call() os_emul call %d out-of-range\n", call);`
223
224			`handler = emul->syscall_descriptor[call].handler;`
225			`if (handler == NULL) {`
226			`if (emul->syscall_descriptor[call].name) {`
227			`error("do_call() unimplemented call %s\n", emul->syscall_descriptor[call].name);`
228			`} else {`
229			`error("do_call() unimplemented call %d\n", call);`
230			`}`
231			`}`
232
233			`if (WITH_TRACE && ppc_trace[trace_os_emul])`
234			`emul_syscall_enter(emul, call, arg0, processor, cia);`
235
236			`cpu_registers(processor)->gpr[0] = 0; /* default success */`
237			`handler(emul_data, call, arg0, processor, cia);`
238
239			`if (WITH_TRACE && ppc_trace[trace_os_emul])`
240			`emul_syscall_exit(emul, call, arg0, processor, cia);`
241			`}`
242
243
244			`/* default size for the first bank of memory */`
245
246			`#ifndef OEA_MEMORY_SIZE`
247			`#define OEA_MEMORY_SIZE 0x100000`
248			`#endif`
249
250
251			`/* Add options to the device tree */`
252
253			`INLINE_EMUL_GENERIC void`
254			`emul_add_tree_options(device *tree,`
255			`bfd *image,`
256			`const char *emul,`
257			`const char *env,`
258			`int oea_interrupt_prefix)`
259			`{`
260			`int little_endian = 0;`
261
262			`/* sort out little endian */`
263			`if (tree_find_property(tree, "/options/little-endian?"))`
264			`little_endian = tree_find_boolean_property(tree, "/options/little-endian?");`
265			`else {`
266			`#ifdef bfd_little_endian /* new bfd */`
267			`little_endian = (image != NULL && bfd_little_endian(image));`
268			`#else`
269			`little_endian = (image != NULL &&`
270			`!image->xvec->byteorder_big_p);`
271			`#endif`
272			`tree_parse(tree, "/options/little-endian? %s",`
273			`little_endian ? "true" : "false");`
274			`}`
275
276			`/* misc other stuff */`
277			`tree_parse(tree, "/openprom/options/oea-memory-size 0x%x",`
278			`OEA_MEMORY_SIZE);`
279			`tree_parse(tree, "/openprom/options/oea-interrupt-prefix %d",`
280			`oea_interrupt_prefix);`
281			`tree_parse(tree, "/openprom/options/smp 1");`
282			`tree_parse(tree, "/openprom/options/env %s", env);`
283			`tree_parse(tree, "/openprom/options/os-emul %s", emul);`
284			`tree_parse(tree, "/openprom/options/strict-alignment? %s",`
285			`(WITH_ALIGNMENT == STRICT_ALIGNMENT)`
286			`? "true" : "false");`
287			`tree_parse(tree, "/openprom/options/floating-point? %s",`
288			`WITH_FLOATING_POINT ? "true" : "false");`
289			`tree_parse(tree, "/openprom/options/use-stdio? %s",`
290			`((WITH_STDIO == DO_USE_STDIO`
291			`\|\| WITH_STDIO == 0)`
292			`? "true" : "false"));`
293			`tree_parse(tree, "/openprom/options/model \"%s",`
294			`model_name[WITH_DEFAULT_MODEL]);`
295			`tree_parse(tree, "/openprom/options/model-issue %d",`
296			`MODEL_ISSUE_IGNORE);`
297
298			`/* useful options */`
299			`}`
300
301			`INLINE_EMUL_GENERIC void`
302			`emul_add_tree_hardware(device *root)`
303			`{`
304			`int i;`
305			`int nr_cpus = tree_find_integer_property(root, "/openprom/options/smp");`
306
307			`/* sanity check the number of processors */`
308			`if (nr_cpus > MAX_NR_PROCESSORS)`
309			`error("Specified number of processors (%d) exceeds the number configured (%d).\n",`
310			`nr_cpus, MAX_NR_PROCESSORS);`
311
312			`/* set the number of address cells (1 or 2) */`
313			`tree_parse(root, "#address-cells %d", WITH_TARGET_WORD_BITSIZE / 32);`
314
315			`/* add some memory */`
316			`if (tree_find_device(root, "/memory") == NULL) {`
317			`unsigned_word memory_size =`
318			`tree_find_integer_property(root, "/openprom/options/oea-memory-size");`
319			`const unsigned_word avail_start = 0x3000;`
320			`tree_parse(root, "/memory@0/reg 0x0 0x%lx",`
321			`(unsigned long)memory_size);`
322			`/* reserve the first 0x3000 for the PowerPC interrupt table */`
323			`tree_parse(root, "/memory@0/available 0x%lx 0x%lx",`
324			`(unsigned long)avail_start,`
325			`(unsigned long)memory_size - avail_start);`
326			`}`
327
328			`/* our processors */`
329			`for (i = 0; i < nr_cpus; i++) {`
330			`tree_parse(root, "/cpus/cpu@%d/cpu-nr %d", i, i);`
331			`}`
332
333			`/* the debugging pal - hide it in the openprom and don't attach it`
334			`to any bus */`
335			`tree_parse(root, "/openprom/pal");`
336
337			`/* chosen etc */`
338			`tree_parse(root, "/chosen/stdin */openprom/pal");`
339			`tree_parse(root, "/chosen/stdout !/chosen/stdin");`
340			`tree_parse(root, "/chosen/memory */memory");`
341			`}`
342
343			`#endif /* _EMUL_GENERIC_C_ */`