[pcsx_rearmed.git] / deps / lightning / lib / jit_disasm.c

/*
 * Copyright (C) 2012-2019  Free Software Foundation, Inc.
 *
 * This file is part of GNU lightning.
 *
 * GNU lightning is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation; either version 3, or (at your option)
 * any later version.
 *
 * GNU lightning 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 Lesser General Public
 * License for more details.
 *
 * Authors:
 *	Paulo Cesar Pereira de Andrade
 */

#include <lightning.h>
#include <lightning/jit_private.h>
#if DISASSEMBLER
#  include <dis-asm.h>
#endif

/*
 * Prototypes
 */
#if DISASSEMBLER
static int
disasm_compare_symbols(const void *ap, const void *bp);

static void
disasm_print_address(bfd_vma addr, struct disassemble_info *info);

#define disassemble(u, v)	_disassemble(_jit, u, v)
static void
_disassemble(jit_state_t *_jit, jit_pointer_t code, jit_int32_t length);
#endif

/*
 * Initialization
 */
#if DISASSEMBLER
static bfd			 *disasm_bfd;
static disassemble_info		  disasm_info;
static disassembler_ftype	  disasm_print;
static asymbol			**disasm_symbols;
static asymbol			 *disasm_synthetic;
static long			  disasm_num_symbols;
static long			  disasm_num_synthetic;
static jit_state_t		 *disasm_jit;
static FILE			 *disasm_stream;
#endif

#if BINUTILS_2_38
static int fprintf_styled(void *, enum disassembler_style, const char* fmt, ...)
{
  va_list args;
  int r;

  va_start(args, fmt);
  r = vprintf(fmt, args);
  va_end(args);

  return r;
}
#endif

/*
 * Implementation
 */
void
jit_init_debug(const char *progname)
{
    jit_init_print();
#if DISASSEMBLER
    bfd_init();

    if (progname)
	disasm_bfd = bfd_openr(progname, NULL);
    if (disasm_bfd == NULL) {
#if defined(__linux__)
	disasm_bfd = bfd_openr("/proc/self/exe", NULL);
	if (disasm_bfd == NULL)
#endif
	    return;
    }
    bfd_check_format(disasm_bfd, bfd_object);
    bfd_check_format(disasm_bfd, bfd_archive);
    if (!disasm_stream)
	disasm_stream = stdout;

#if BINUTILS_2_38
    INIT_DISASSEMBLE_INFO(disasm_info, disasm_stream, fprintf, fprintf_styled);
#else
    INIT_DISASSEMBLE_INFO(disasm_info, disasm_stream, fprintf);
#endif
    disasm_info.arch = bfd_get_arch(disasm_bfd);
    disasm_info.mach = bfd_get_mach(disasm_bfd);

#  if HAVE_DISASSEMBLE_INIT_FOR_TARGET
    disassemble_init_for_target(&disasm_info);
#  endif

#  if defined(__powerpc64__)
    disasm_info.disassembler_options = "64";
#  endif
#  if defined(__sparc__) || defined(__s390__) || defined(__s390x__)
    disasm_info.endian = disasm_info.display_endian = BFD_ENDIAN_BIG;
#  endif
#  if defined(__s390__) || defined(__s390x__)
    disasm_info.disassembler_options = "zarch";
#  endif
    disasm_info.print_address_func = disasm_print_address;

# if BINUTILS_2_29
    disasm_print = disassembler(disasm_info.arch, __BYTE_ORDER == __BIG_ENDIAN,
				disasm_info.mach, disasm_bfd);
#  else
    disasm_print = disassembler(disasm_bfd);
#  endif
    assert(disasm_print);

    if (bfd_get_file_flags(disasm_bfd) & HAS_SYMS) {
	asymbol		**in;
	asymbol		**out;
	asymbol		 *symbol;
	long		  offset;
	long		  sym_count;
	long		  dyn_count;
	long		  sym_storage;
	long		  dyn_storage;

	if ((sym_storage = bfd_get_symtab_upper_bound(disasm_bfd)) >= 0) {

	    if (bfd_get_file_flags(disasm_bfd) & DYNAMIC) {
		dyn_storage = bfd_get_dynamic_symtab_upper_bound(disasm_bfd);
#  if defined(__alpha__)
		/* XXX */
		if (dyn_storage < 0)
		    dyn_storage = 0;
#  else
		assert(dyn_storage >= 0);
#  endif
	    }
	    else
		dyn_storage = 0;

	    jit_alloc((jit_pointer_t *)&disasm_symbols,
		      (sym_storage + dyn_storage) * sizeof(asymbol *));
	    sym_count = bfd_canonicalize_symtab(disasm_bfd, disasm_symbols);
	    assert(sym_count >= 0);
	    if (dyn_storage) {
		dyn_count = bfd_canonicalize_dynamic_symtab(disasm_bfd,
							    disasm_symbols +
							    sym_count);
		assert(dyn_count >= 0);
	    }
	    else
		dyn_count = 0;
	    disasm_num_symbols = sym_count + dyn_count;

	    disasm_num_synthetic = bfd_get_synthetic_symtab(disasm_bfd,
							    sym_count,
							    disasm_symbols,
							    dyn_count,
							    disasm_symbols +
							    sym_count,
							    &disasm_synthetic);
	    if (disasm_num_synthetic > 0) {
		jit_realloc((jit_pointer_t *)&disasm_symbols,
			    (sym_storage + dyn_storage) * sizeof(asymbol *),
			    (sym_storage + dyn_storage + disasm_num_synthetic) *
			    sizeof(asymbol *));
		for (offset = 0; offset < disasm_num_synthetic; offset++)
		    disasm_symbols[disasm_num_symbols++] =
			disasm_synthetic + offset;
	    }

	    /* remove symbols not useful for disassemble */
	    in = out = disasm_symbols;
	    for (offset = 0; offset < disasm_num_symbols; offset++) {
		symbol = *in++;
		if (symbol->name &&
		    symbol->name[0] != '\0' &&
		    !(symbol->flags & (BSF_DEBUGGING | BSF_SECTION_SYM)) &&
		    !bfd_is_und_section(symbol->section) &&
		    !bfd_is_com_section(symbol->section))
		    *out++ = symbol;
	    }
	    disasm_num_symbols = out - disasm_symbols;
	    qsort(disasm_symbols, disasm_num_symbols,
		  sizeof(asymbol *), disasm_compare_symbols);
	}
    }
#endif
}

void
jit_finish_debug(void)
{
#if DISASSEMBLER
    if (disasm_synthetic)
	jit_free((jit_pointer_t *)&disasm_synthetic);
    if (disasm_symbols)
	jit_free((jit_pointer_t *)&disasm_symbols);
    if (disasm_bfd)
	bfd_close (disasm_bfd);
#endif
}

void
_jit_disassemble(jit_state_t *_jit)
{
#if DISASSEMBLER
    if (disasm_bfd) {
#  if defined(__arm__)
	/* FIXME add mapping for prolog switching to arm and possible jump
	 * before first prolog also in arm mode */
	disasm_info.disassembler_options = jit_cpu.thumb ? "force-thumb" : "";
#  endif

	disassemble(_jit->code.ptr, _jit->pc.uc - _jit->code.ptr);
    }
#endif
}

#if DISASSEMBLER
/* Based on objdump source */
static int
disasm_compare_symbols(const void *ap, const void *bp)
{
    const asymbol	*a = *(const asymbol **)ap;
    const asymbol	*b = *(const asymbol **)bp;

    if (bfd_asymbol_value(a) > bfd_asymbol_value(b))
	return (1);
    if (bfd_asymbol_value(a) < bfd_asymbol_value(b))
	return (-1);
    return (0);
}

#if __WORDSIZE == 32
#  define address_buffer_length		16
#  define address_buffer_format		"%llx"
#else
#  define address_buffer_length		32
#  define address_buffer_format		"%lx"
#endif
static void
disasm_print_address(bfd_vma addr, struct disassemble_info *info)
{
    char		*name;
    char		*file;
    int			 line;
    char		 buffer[address_buffer_length];

    sprintf(buffer, address_buffer_format, (long long)addr);
    (*info->fprintf_func)(info->stream, "0x%s", buffer);

#  define _jit				disasm_jit
#  undef jit_pointer_p
#  define jit_pointer_p(u)					\
	((u) >= _jit->code.ptr && (u) < _jit->pc.uc)
    if (jit_pointer_p((jit_uint8_t *)(jit_word_t)addr)) {
	if (jit_get_note((jit_uint8_t *)(jit_word_t)addr, &name, &file, &line))
	    (*info->fprintf_func)(info->stream, " %s:%s:%d",
				  name ? name : "",
				  file ? file : "",
				  line);
    }
#  undef jit_pointer_p
#  undef _jit
    else if (disasm_num_symbols) {
	long		 low;
	long		 high;
	long		 offset;
	asymbol		*symbol;

	low = 0;
	high = disasm_num_symbols;
	do {
	    offset = (low + high) >> 1;
	    symbol = disasm_symbols[offset];
	    if (bfd_asymbol_value(symbol) > addr)
		high = offset - 1;
	    else if (bfd_asymbol_value(symbol) < addr)
		low = offset + 1;
	    else
		break;
	} while (low < high);

	if (offset >= 0 && offset < disasm_num_symbols) {
	    if (bfd_asymbol_value(symbol) < addr) {
		while (++offset < disasm_num_symbols) {
		    symbol = disasm_symbols[offset];
		    if (bfd_asymbol_value(symbol) >= addr)
			break;
		}
	    }
	    else if (bfd_asymbol_value(symbol) > addr) {
		while (offset--) {
		    if (bfd_asymbol_value(disasm_symbols[offset]) < addr)
			break;
		    symbol = disasm_symbols[offset];
		}
	    }
	    if (bfd_asymbol_value(symbol) == addr)
		(*info->fprintf_func)(info->stream, " # %s", symbol->name);
	}
    }
}

static void
_disassemble(jit_state_t *_jit, jit_pointer_t code, jit_int32_t length)
{
    int			 bytes;
    char		*name, *old_name;
    char		*file, *old_file;
    int			 line,  old_line;
#if __arm__
    jit_int32_t		 offset;
    jit_bool_t		 data_info;
    jit_int32_t		 data_offset;
#endif
    bfd_vma		 pc = (jit_uword_t)code;
    bfd_vma		 end = (jit_uword_t)code + length;
    char		 buffer[address_buffer_length];
#if DEVEL_DISASSEMBLER
    jit_node_t		*node;
    jit_uword_t		 prevw;
#endif

#if __arm__
    data_info = _jitc && _jitc->data_info.ptr;
    data_offset = 0;
#endif
    disasm_info.buffer = code;
    disasm_info.buffer_vma = (jit_uword_t)code;
    disasm_info.buffer_length = length;
    old_file = old_name = NULL;
    old_line = 0;
    disasm_jit = _jit;
#if DEVEL_DISASSEMBLER
    node = _jitc->head;
    prevw = pc;
#endif
    while (pc < end) {
#if DEVEL_DISASSEMBLER
	while (node && (jit_uword_t)(prevw + node->offset) < (jit_uword_t)pc) {
	    prevw += node->offset;
	    node = node->next;
	}
	while (node && (jit_uword_t)(prevw + node->offset) == (jit_uword_t)pc) {
	    jit_print_node(node);
	    fputc('\n', stdout); 
	    prevw += node->offset;
	    node = node->next;
	}
#endif
#if __arm__
    again:
	if (data_info) {
	    while (_jitc->data_info.ptr[data_offset].code < pc) {
		if (++data_offset >= _jitc->data_info.length) {
		    data_info = 0;
		    goto again;
		}
	    }
	    if (pc == _jitc->data_info.ptr[data_offset].code) {
		offset = _jitc->data_info.ptr[data_offset].length;
		for (; offset >= 4; offset -= 4, pc += 4) {
		    bytes = sprintf(buffer, address_buffer_format, pc);
		    (*disasm_info.fprintf_func)(disasm_stream,
						"%*c0x%s\t.data\t0x%08x\n",
						16 - bytes, ' ', buffer,
						*(jit_uint32_t *)
						(jit_uint32_t)pc);
		}
		/* reset disassemble information instead of attempting
		 * to hack the arm specific backend data structures to
		 * tell it to forward the required number of bytes. */
		disasm_info.buffer = (jit_pointer_t)(jit_uint32_t)pc;
		disasm_info.buffer_vma = (jit_uword_t)pc;
		if ((disasm_info.buffer_length = end - pc) <= 0)
		    break;
	    }
	}
#endif
	if (jit_get_note((jit_uint8_t *)(jit_word_t)pc, &name, &file, &line) &&
	    (name != old_name || file != old_file || line != old_line)) {
	    (*disasm_info.fprintf_func)(disasm_stream, "# %s:%s:%d\n",
					name ? name : "",
					file ? file : "",
					line);
	    old_name = name;
	    old_file = file;
	    old_line = line;
	}

	bytes = sprintf(buffer, address_buffer_format, (long long)pc);
	(*disasm_info.fprintf_func)(disasm_stream, "%*c0x%s\t",
				    16 - bytes, ' ', buffer);
	pc += (*disasm_print)(pc, &disasm_info);
	putc('\n', disasm_stream);
    }
}
#endif
Commit	Line	Data
4a71579b PC	1	/*
	2	* Copyright (C) 2012-2019 Free Software Foundation, Inc.
	3	*
	4	* This file is part of GNU lightning.
	5	*
	6	* GNU lightning is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU Lesser General Public License as published
	8	* by the Free Software Foundation; either version 3, or (at your option)
	9	* any later version.
	10	*
	11	* GNU lightning is distributed in the hope that it will be useful, but
	12	* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
	13	* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
	14	* License for more details.
	15	*
	16	* Authors:
	17	* Paulo Cesar Pereira de Andrade
	18	*/
	19
	20	#include <lightning.h>
	21	#include <lightning/jit_private.h>
	22	#if DISASSEMBLER
	23	# include <dis-asm.h>
	24	#endif
	25
	26	/*
	27	* Prototypes
	28	*/
	29	#if DISASSEMBLER
	30	static int
	31	disasm_compare_symbols(const void ap, const void bp);
	32
	33	static void
	34	disasm_print_address(bfd_vma addr, struct disassemble_info *info);
	35
	36	#define disassemble(u, v) _disassemble(_jit, u, v)
	37	static void
	38	_disassemble(jit_state_t *_jit, jit_pointer_t code, jit_int32_t length);
	39	#endif
	40
	41	/*
	42	* Initialization
	43	*/
	44	#if DISASSEMBLER
	45	static bfd *disasm_bfd;
	46	static disassemble_info disasm_info;
	47	static disassembler_ftype disasm_print;
	48	static asymbol **disasm_symbols;
	49	static asymbol *disasm_synthetic;
	50	static long disasm_num_symbols;
	51	static long disasm_num_synthetic;
	52	static jit_state_t *disasm_jit;
519a9ea1	53	static FILE *disasm_stream;
4a71579b PC	54	#endif
4a71579b PC	55
ba3814c1 PC	56	#if BINUTILS_2_38
	57	static int fprintf_styled(void , enum disassembler_style, const char fmt, ...)
	58	{
	59	va_list args;
	60	int r;
	61
	62	va_start(args, fmt);
	63	r = vprintf(fmt, args);
	64	va_end(args);
	65
	66	return r;
	67	}
	68	#endif
	69
4a71579b PC	70	/*
	71	* Implementation
	72	*/
	73	void
	74	jit_init_debug(const char *progname)
	75	{
40a44dcb	76	jit_init_print();
4a71579b PC	77	#if DISASSEMBLER
	78	bfd_init();
	79
	80	if (progname)
	81	disasm_bfd = bfd_openr(progname, NULL);
	82	if (disasm_bfd == NULL) {
	83	#if defined(__linux__)
	84	disasm_bfd = bfd_openr("/proc/self/exe", NULL);
	85	if (disasm_bfd == NULL)
	86	#endif
	87	return;
	88	}
	89	bfd_check_format(disasm_bfd, bfd_object);
	90	bfd_check_format(disasm_bfd, bfd_archive);
519a9ea1	91	if (!disasm_stream)
40a44dcb PC	92	disasm_stream = stdout;
40a44dcb PC	93
ba3814c1 PC	94	#if BINUTILS_2_38
	95	INIT_DISASSEMBLE_INFO(disasm_info, disasm_stream, fprintf, fprintf_styled);
	96	#else
4a71579b	97	INIT_DISASSEMBLE_INFO(disasm_info, disasm_stream, fprintf);
ba3814c1	98	#endif
40a44dcb PC	99	disasm_info.arch = bfd_get_arch(disasm_bfd);
	100	disasm_info.mach = bfd_get_mach(disasm_bfd);
	101
	102	# if HAVE_DISASSEMBLE_INIT_FOR_TARGET
4a71579b	103	disassemble_init_for_target(&disasm_info);
40a44dcb PC	104	# endif
	105
	106	# if defined(__powerpc64__)
4a71579b	107	disasm_info.disassembler_options = "64";
4a71579b	108	# endif
40a44dcb	109	# if defined(__sparc__) \|\| defined(__s390__) \|\| defined(__s390x__)
4a71579b PC	110	disasm_info.endian = disasm_info.display_endian = BFD_ENDIAN_BIG;
	111	# endif
	112	# if defined(__s390__) \|\| defined(__s390x__)
4a71579b	113	disasm_info.disassembler_options = "zarch";
4a71579b PC	114	# endif
	115	disasm_info.print_address_func = disasm_print_address;
	116
	117	# if BINUTILS_2_29
	118	disasm_print = disassembler(disasm_info.arch, __BYTE_ORDER == __BIG_ENDIAN,
	119	disasm_info.mach, disasm_bfd);
	120	# else
	121	disasm_print = disassembler(disasm_bfd);
	122	# endif
	123	assert(disasm_print);
	124
	125	if (bfd_get_file_flags(disasm_bfd) & HAS_SYMS) {
	126	asymbol **in;
	127	asymbol **out;
	128	asymbol *symbol;
	129	long offset;
	130	long sym_count;
	131	long dyn_count;
	132	long sym_storage;
	133	long dyn_storage;
	134
	135	if ((sym_storage = bfd_get_symtab_upper_bound(disasm_bfd)) >= 0) {
	136
	137	if (bfd_get_file_flags(disasm_bfd) & DYNAMIC) {
	138	dyn_storage = bfd_get_dynamic_symtab_upper_bound(disasm_bfd);
	139	# if defined(__alpha__)
	140	/* XXX */
	141	if (dyn_storage < 0)
	142	dyn_storage = 0;
	143	# else
	144	assert(dyn_storage >= 0);
	145	# endif
	146	}
	147	else
	148	dyn_storage = 0;
	149
	150	jit_alloc((jit_pointer_t *)&disasm_symbols,
	151	(sym_storage + dyn_storage) * sizeof(asymbol *));
	152	sym_count = bfd_canonicalize_symtab(disasm_bfd, disasm_symbols);
	153	assert(sym_count >= 0);
	154	if (dyn_storage) {
	155	dyn_count = bfd_canonicalize_dynamic_symtab(disasm_bfd,
	156	disasm_symbols +
	157	sym_count);
	158	assert(dyn_count >= 0);
	159	}
	160	else
	161	dyn_count = 0;
	162	disasm_num_symbols = sym_count + dyn_count;
	163
	164	disasm_num_synthetic = bfd_get_synthetic_symtab(disasm_bfd,
	165	sym_count,
	166	disasm_symbols,
	167	dyn_count,
	168	disasm_symbols +
	169	sym_count,
	170	&disasm_synthetic);
	171	if (disasm_num_synthetic > 0) {
	172	jit_realloc((jit_pointer_t *)&disasm_symbols,
	173	(sym_storage + dyn_storage) * sizeof(asymbol *),
	174	(sym_storage + dyn_storage + disasm_num_synthetic) *
	175	sizeof(asymbol *));
	176	for (offset = 0; offset < disasm_num_synthetic; offset++)
	177	disasm_symbols[disasm_num_symbols++] =
178	disasm_synthetic + offset;
179	}
180
181	/* remove symbols not useful for disassemble */
182	in = out = disasm_symbols;
183	for (offset = 0; offset < disasm_num_symbols; offset++) {
184	symbol = *in++;
185	if (symbol->name &&
186	symbol->name[0] != '\0' &&
187	!(symbol->flags & (BSF_DEBUGGING \| BSF_SECTION_SYM)) &&
188	!bfd_is_und_section(symbol->section) &&
189	!bfd_is_com_section(symbol->section))
190	*out++ = symbol;
191	}
192	disasm_num_symbols = out - disasm_symbols;
193	qsort(disasm_symbols, disasm_num_symbols,
194	sizeof(asymbol *), disasm_compare_symbols);
195	}
196	}
197	#endif
198	}
199
200	void
201	jit_finish_debug(void)
202	{
203	#if DISASSEMBLER
204	if (disasm_synthetic)
205	jit_free((jit_pointer_t *)&disasm_synthetic);
206	if (disasm_symbols)
207	jit_free((jit_pointer_t *)&disasm_symbols);
208	if (disasm_bfd)
209	bfd_close (disasm_bfd);
210	#endif
211	}
212
213	void
214	_jit_disassemble(jit_state_t *_jit)
215	{
216	#if DISASSEMBLER
217	if (disasm_bfd) {
218	# if defined(__arm__)
219	/* FIXME add mapping for prolog switching to arm and possible jump
220	* before first prolog also in arm mode */
221	disasm_info.disassembler_options = jit_cpu.thumb ? "force-thumb" : "";
222	# endif
223
224	disassemble(_jit->code.ptr, _jit->pc.uc - _jit->code.ptr);
225	}
226	#endif
227	}
228
229	#if DISASSEMBLER
230	/* Based on objdump source */
231	static int
232	disasm_compare_symbols(const void ap, const void bp)
233	{
234	const asymbol a = (const asymbol **)ap;
235	const asymbol b = (const asymbol **)bp;
236
237	if (bfd_asymbol_value(a) > bfd_asymbol_value(b))
238	return (1);
239	if (bfd_asymbol_value(a) < bfd_asymbol_value(b))
240	return (-1);
241	return (0);
242	}
243
244	#if __WORDSIZE == 32
245	# define address_buffer_length 16
246	# define address_buffer_format "%llx"
247	#else
248	# define address_buffer_length 32
249	# define address_buffer_format "%lx"
250	#endif
251	static void
252	disasm_print_address(bfd_vma addr, struct disassemble_info *info)
253	{
254	char *name;
255	char *file;
256	int line;
257	char buffer[address_buffer_length];
258
259	sprintf(buffer, address_buffer_format, (long long)addr);
260	(*info->fprintf_func)(info->stream, "0x%s", buffer);
261
262	# define _jit disasm_jit
263	# undef jit_pointer_p
264	# define jit_pointer_p(u) \
265	((u) >= _jit->code.ptr && (u) < _jit->pc.uc)
266	if (jit_pointer_p((jit_uint8_t *)(jit_word_t)addr)) {
267	if (jit_get_note((jit_uint8_t *)(jit_word_t)addr, &name, &file, &line))
268	(*info->fprintf_func)(info->stream, " %s:%s:%d",
269	name ? name : "",
270	file ? file : "",
271	line);
272	}
273	# undef jit_pointer_p
274	# undef _jit
275	else if (disasm_num_symbols) {
276	long low;
277	long high;
278	long offset;
279	asymbol *symbol;
280
281	low = 0;
282	high = disasm_num_symbols;
283	do {
284	offset = (low + high) >> 1;
285	symbol = disasm_symbols[offset];
286	if (bfd_asymbol_value(symbol) > addr)
287	high = offset - 1;
288	else if (bfd_asymbol_value(symbol) < addr)
289	low = offset + 1;
290	else
291	break;
292	} while (low < high);
293
294	if (offset >= 0 && offset < disasm_num_symbols) {
295	if (bfd_asymbol_value(symbol) < addr) {
296	while (++offset < disasm_num_symbols) {
297	symbol = disasm_symbols[offset];
298	if (bfd_asymbol_value(symbol) >= addr)
299	break;
300	}
301	}
302	else if (bfd_asymbol_value(symbol) > addr) {
303	while (offset--) {
304	if (bfd_asymbol_value(disasm_symbols[offset]) < addr)
305	break;
306	symbol = disasm_symbols[offset];
307	}
308	}
309	if (bfd_asymbol_value(symbol) == addr)
310	(*info->fprintf_func)(info->stream, " # %s", symbol->name);
311	}
312	}
313	}
314
315	static void
316	_disassemble(jit_state_t *_jit, jit_pointer_t code, jit_int32_t length)
317	{
318	int bytes;
319	char name, old_name;
320	char file, old_file;
321	int line, old_line;
322	#if __arm__
323	jit_int32_t offset;
324	jit_bool_t data_info;
325	jit_int32_t data_offset;
326	#endif
327	bfd_vma pc = (jit_uword_t)code;
328	bfd_vma end = (jit_uword_t)code + length;
329	char buffer[address_buffer_length];
330	#if DEVEL_DISASSEMBLER
331	jit_node_t *node;
332	jit_uword_t prevw;
333	#endif
334
335	#if __arm__
336	data_info = _jitc && _jitc->data_info.ptr;
337	data_offset = 0;
338	#endif
339	disasm_info.buffer = code;
340	disasm_info.buffer_vma = (jit_uword_t)code;
341	disasm_info.buffer_length = length;
342	old_file = old_name = NULL;
343	old_line = 0;
344	disasm_jit = _jit;
345	#if DEVEL_DISASSEMBLER
346	node = _jitc->head;
347	prevw = pc;
348	#endif
349	while (pc < end) {
350	#if DEVEL_DISASSEMBLER
351	while (node && (jit_uword_t)(prevw + node->offset) < (jit_uword_t)pc) {
352	prevw += node->offset;
353	node = node->next;
354	}
355	while (node && (jit_uword_t)(prevw + node->offset) == (jit_uword_t)pc) {
356	jit_print_node(node);
357	fputc('\n', stdout);
358	prevw += node->offset;
359	node = node->next;
360	}
361	#endif
362	#if __arm__
363	again:
364	if (data_info) {
365	while (_jitc->data_info.ptr[data_offset].code < pc) {
366	if (++data_offset >= _jitc->data_info.length) {
367	data_info = 0;
368	goto again;
369	}
370	}
371	if (pc == _jitc->data_info.ptr[data_offset].code) {
372	offset = _jitc->data_info.ptr[data_offset].length;
373	for (; offset >= 4; offset -= 4, pc += 4) {
374	bytes = sprintf(buffer, address_buffer_format, pc);
375	(*disasm_info.fprintf_func)(disasm_stream,
376	"%*c0x%s\t.data\t0x%08x\n",
377	16 - bytes, ' ', buffer,
378	(jit_uint32_t )
379	(jit_uint32_t)pc);
380	}
381	/* reset disassemble information instead of attempting
382	* to hack the arm specific backend data structures to
383	* tell it to forward the required number of bytes. */
384	disasm_info.buffer = (jit_pointer_t)(jit_uint32_t)pc;
385	disasm_info.buffer_vma = (jit_uword_t)pc;
386	if ((disasm_info.buffer_length = end - pc) <= 0)
387	break;
388	}
389	}
390	#endif
391	if (jit_get_note((jit_uint8_t *)(jit_word_t)pc, &name, &file, &line) &&
392	(name != old_name \|\| file != old_file \|\| line != old_line)) {
393	(*disasm_info.fprintf_func)(disasm_stream, "# %s:%s:%d\n",
394	name ? name : "",
395	file ? file : "",
396	line);
397	old_name = name;
398	old_file = file;
399	old_line = line;
400	}
401
402	bytes = sprintf(buffer, address_buffer_format, (long long)pc);
403	(disasm_info.fprintf_func)(disasm_stream, "%c0x%s\t",
404	16 - bytes, ' ', buffer);
405	pc += (*disasm_print)(pc, &disasm_info);
406	putc('\n', disasm_stream);
407	}
408	}
409	#endif