/* dwarf2dbg.c - DWARF2 debug support
- Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+ Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
.file FILENO "file.c"
.loc FILENO LINENO [COLUMN] [basic_block] [prologue_end] \
- [epilogue_begin] [is_stmt VALUE] [isa VALUE]
+ [epilogue_begin] [is_stmt VALUE] [isa VALUE] \
+ [discriminator VALUE]
*/
#include "as.h"
# define DWARF2_ADDR_SIZE(bfd) (bfd_arch_bits_per_address (bfd) / 8)
#endif
+#ifndef DWARF2_FILE_NAME
+#define DWARF2_FILE_NAME(FILENAME, DIRNAME) FILENAME
+#endif
+
+#ifndef DWARF2_FILE_TIME_NAME
+#define DWARF2_FILE_TIME_NAME(FILENAME,DIRNAME) 0
+#endif
+
+#ifndef DWARF2_FILE_SIZE_NAME
+#define DWARF2_FILE_SIZE_NAME(FILENAME,DIRNAME) 0
+#endif
+
+#ifndef DWARF2_VERSION
+#define DWARF2_VERSION 2
+#endif
+
+/* The .debug_aranges version has been 2 in DWARF version 2, 3 and 4. */
+#ifndef DWARF2_ARANGES_VERSION
+#define DWARF2_ARANGES_VERSION 2
+#endif
+
+/* This implementation output version 2 .debug_line information. */
+#ifndef DWARF2_LINE_VERSION
+#define DWARF2_LINE_VERSION 2
+#endif
+
#include "subsegs.h"
-#include "elf/dwarf2.h"
+#include "dwarf2.h"
/* Since we can't generate the prolog until the body is complete, we
use three different subsegments for .debug_line: one holding the
/* Collects data for all line table entries during assembly. */
static struct line_seg *all_segs;
+/* Hash used to quickly lookup a segment by name, avoiding the need to search
+ through the all_segs list. */
+static struct hash_control *all_segs_hash;
+static struct line_seg **last_seg_ptr;
struct file_entry {
const char *filename;
/* Current location as indicated by the most recent .loc directive. */
static struct dwarf2_line_info current = {
1, 1, 0, 0,
- DWARF2_LINE_DEFAULT_IS_STMT ? DWARF2_FLAG_IS_STMT : 0
+ DWARF2_LINE_DEFAULT_IS_STMT ? DWARF2_FLAG_IS_STMT : 0,
+ 0
};
+/* Lines that are at the same location as CURRENT, and which are waiting
+ for a label. */
+static struct line_entry *pending_lines, **pending_lines_tail = &pending_lines;
+
/* The size of an address on the target. */
static unsigned int sizeof_address;
\f
static void
generic_dwarf2_emit_offset (symbolS *symbol, unsigned int size)
{
- expressionS expr;
+ expressionS exp;
- expr.X_op = O_symbol;
- expr.X_add_symbol = symbol;
- expr.X_add_number = 0;
- emit_expr (&expr, size);
+ exp.X_op = O_symbol;
+ exp.X_add_symbol = symbol;
+ exp.X_add_number = 0;
+ emit_expr (&exp, size);
}
#endif
static subsegT last_subseg;
static struct line_subseg *last_line_subseg;
- struct line_seg **ps, *s;
- struct line_subseg **pss, *ss;
+ struct line_seg *s;
+ struct line_subseg **pss, *lss;
if (seg == last_seg && subseg == last_subseg)
return last_line_subseg;
- for (ps = &all_segs; (s = *ps) != NULL; ps = &s->next)
- if (s->seg == seg)
- goto found_seg;
-
- s = (struct line_seg *) xmalloc (sizeof (*s));
- s->next = NULL;
- s->seg = seg;
- s->head = NULL;
- *ps = s;
+ s = (struct line_seg *) hash_find (all_segs_hash, seg->name);
+ if (s == NULL)
+ {
+ s = (struct line_seg *) xmalloc (sizeof (*s));
+ s->next = NULL;
+ s->seg = seg;
+ s->head = NULL;
+ *last_seg_ptr = s;
+ last_seg_ptr = &s->next;
+ hash_insert (all_segs_hash, seg->name, s);
+ }
+ gas_assert (seg == s->seg);
- found_seg:
- for (pss = &s->head; (ss = *pss) != NULL ; pss = &ss->next)
+ for (pss = &s->head; (lss = *pss) != NULL ; pss = &lss->next)
{
- if (ss->subseg == subseg)
+ if (lss->subseg == subseg)
goto found_subseg;
- if (ss->subseg > subseg)
+ if (lss->subseg > subseg)
break;
}
- ss = (struct line_subseg *) xmalloc (sizeof (*ss));
- ss->next = *pss;
- ss->subseg = subseg;
- ss->head = NULL;
- ss->ptail = &ss->head;
- *pss = ss;
+ lss = (struct line_subseg *) xmalloc (sizeof (*lss));
+ lss->next = *pss;
+ lss->subseg = subseg;
+ lss->head = NULL;
+ lss->ptail = &lss->head;
+ *pss = lss;
found_subseg:
last_seg = seg;
last_subseg = subseg;
- last_line_subseg = ss;
+ last_line_subseg = lss;
- return ss;
+ return lss;
}
-/* Record an entry for LOC occurring at LABEL. */
+/* Push LOC onto the pending lines list. */
static void
-dwarf2_gen_line_info_1 (symbolS *label, struct dwarf2_line_info *loc)
+dwarf2_push_line (struct dwarf2_line_info *loc)
{
- struct line_subseg *ss;
struct line_entry *e;
e = (struct line_entry *) xmalloc (sizeof (*e));
e->next = NULL;
- e->label = label;
+ e->label = NULL;
e->loc = *loc;
- ss = get_line_subseg (now_seg, now_subseg);
- *ss->ptail = e;
- ss->ptail = &e->next;
+ *pending_lines_tail = e;
+ pending_lines_tail = &(*pending_lines_tail)->next;
+}
+
+/* Emit all pending line information. LABEL is the label with which the
+ lines should be associated, or null if they should be associated with
+ the current position. */
+
+static void
+dwarf2_flush_pending_lines (symbolS *label)
+{
+ if (pending_lines)
+ {
+ struct line_subseg *lss;
+ struct line_entry *e;
+
+ if (!label)
+ label = symbol_temp_new_now ();
+
+ for (e = pending_lines; e; e = e->next)
+ e->label = label;
+
+ lss = get_line_subseg (now_seg, now_subseg);
+ *lss->ptail = pending_lines;
+ lss->ptail = pending_lines_tail;
+
+ pending_lines = NULL;
+ pending_lines_tail = &pending_lines;
+ }
}
/* Record an entry for LOC occurring at OFS within the current fragment. */
static unsigned int line = -1;
static unsigned int filenum = -1;
- symbolS *sym;
-
/* Early out for as-yet incomplete location information. */
if (loc->filenum == 0 || loc->line == 0)
return;
line = loc->line;
filenum = loc->filenum;
- sym = symbol_temp_new (now_seg, ofs, frag_now);
- dwarf2_gen_line_info_1 (sym, loc);
+ dwarf2_push_line (loc);
+ dwarf2_flush_pending_lines (symbol_temp_new (now_seg, ofs, frag_now));
}
/* Returns the current source information. If .file directives have
line->column = 0;
line->flags = DWARF2_FLAG_IS_STMT;
line->isa = current.isa;
+ line->discriminator = current.discriminator;
}
else
*line = current;
void
dwarf2_consume_line_info (void)
{
+ /* If the consumer has stashed the current location away for later use,
+ assume that any earlier location information should be associated
+ with ".". */
+ dwarf2_flush_pending_lines (NULL);
+
/* Unless we generate DWARF2 debugging information for each
assembler line, we only emit one line symbol for one LOC. */
dwarf2_loc_directive_seen = FALSE;
current.flags &= ~(DWARF2_FLAG_BASIC_BLOCK
| DWARF2_FLAG_PROLOGUE_END
| DWARF2_FLAG_EPILOGUE_BEGIN);
+ current.discriminator = 0;
}
/* Called for each (preferably code) label. If dwarf2_loc_mark_labels
loc.flags |= DWARF2_FLAG_BASIC_BLOCK;
- dwarf2_gen_line_info_1 (label, &loc);
+ dwarf2_push_line (&loc);
+ dwarf2_flush_pending_lines (label);
dwarf2_consume_line_info ();
}
if (num == 0 && last_used)
{
if (! files[last_used].dir
- && strcmp (filename, files[last_used].filename) == 0)
+ && filename_cmp (filename, files[last_used].filename) == 0)
return last_used;
if (files[last_used].dir
- && strncmp (filename, dirs[files[last_used].dir],
- last_used_dir_len) == 0
+ && filename_ncmp (filename, dirs[files[last_used].dir],
+ last_used_dir_len) == 0
&& IS_DIR_SEPARATOR (filename [last_used_dir_len])
- && strcmp (filename + last_used_dir_len + 1,
- files[last_used].filename) == 0)
+ && filename_cmp (filename + last_used_dir_len + 1,
+ files[last_used].filename) == 0)
return last_used;
}
dir = 0;
if (dir_len)
{
+#ifndef DWARF2_DIR_SHOULD_END_WITH_SEPARATOR
--dir_len;
+#endif
for (dir = 1; dir < dirs_in_use; ++dir)
- if (strncmp (filename, dirs[dir], dir_len) == 0
+ if (filename_ncmp (filename, dirs[dir], dir_len) == 0
&& dirs[dir][dir_len] == '\0')
break;
xrealloc (dirs, (dir + 32) * sizeof (const char *));
}
- dirs[dir] = xmalloc (dir_len + 1);
+ dirs[dir] = (char *) xmalloc (dir_len + 1);
memcpy (dirs[dir], filename, dir_len);
dirs[dir][dir_len] = '\0';
dirs_in_use = dir + 1;
for (i = 1; i < files_in_use; ++i)
if (files[i].dir == dir
&& files[i].filename
- && strcmp (file, files[i].filename) == 0)
+ && filename_cmp (file, files[i].filename) == 0)
{
last_used = i;
last_used_dir_len = dir_len;
return NULL;
}
+ /* A .file directive implies compiler generated debug information is
+ being supplied. Turn off gas generated debug info. */
+ debug_type = DEBUG_NONE;
+
if (num < (int) files_in_use && files[num].filename != 0)
{
as_bad (_("file number %ld already allocated"), (long) num);
/* If we see two .loc directives in a row, force the first one to be
output now. */
- if (dwarf2_loc_directive_seen && debug_type != DEBUG_DWARF2)
- dwarf2_emit_insn (0);
+ if (dwarf2_loc_directive_seen)
+ dwarf2_push_line (¤t);
filenum = get_absolute_expression ();
SKIP_WHITESPACE ();
current.filenum = filenum;
current.line = line;
+ current.discriminator = 0;
#ifndef NO_LISTING
if (listing)
return;
}
}
+ else if (strcmp (p, "discriminator") == 0)
+ {
+ *input_line_pointer = c;
+ value = get_absolute_expression ();
+ if (value >= 0)
+ current.discriminator = value;
+ else
+ {
+ as_bad (_("discriminator less than zero"));
+ return;
+ }
+ }
else
{
as_bad (_("unknown .loc sub-directive `%s'"), p);
demand_empty_rest_of_line ();
dwarf2_loc_directive_seen = TRUE;
+ debug_type = DEBUG_NONE;
}
void
output_leb128 (frag_more (sizeof_leb128 (value, 0)), value, 0);
}
+/* Emit a signed "little-endian base 128" number. */
+
+static void
+out_leb128 (addressT value)
+{
+ output_leb128 (frag_more (sizeof_leb128 (value, 1)), value, 1);
+}
+
/* Emit a tuple for .debug_abbrev. */
static inline void
static void
out_set_addr (symbolS *sym)
{
- expressionS expr;
+ expressionS exp;
out_opcode (DW_LNS_extended_op);
out_uleb128 (sizeof_address + 1);
out_opcode (DW_LNE_set_address);
- expr.X_op = O_symbol;
- expr.X_add_symbol = sym;
- expr.X_add_number = 0;
- emit_expr (&expr, sizeof_address);
+ exp.X_op = O_symbol;
+ exp.X_add_symbol = sym;
+ exp.X_add_number = 0;
+ emit_expr (&exp, sizeof_address);
}
#if DWARF2_LINE_MIN_INSN_LENGTH > 1
/* Line number sequences cannot go backward in addresses. This means
we've incorrectly ordered the statements in the sequence. */
- assert ((offsetT) addr_delta >= 0);
+ gas_assert ((offsetT) addr_delta >= 0);
/* Scale the address delta by the minimum instruction length. */
scale_addr_delta (&addr_delta);
*p++ = tmp;
done:
- assert (p == end);
+ gas_assert (p == end);
}
/* Handy routine to combine calls to the above two routines. */
emit_fixed_inc_line_addr (int line_delta, addressT addr_delta, fragS *frag,
char *p, int len)
{
- expressionS *exp;
+ expressionS *pexp;
segT line_seg;
char *end = p + len;
/* Line number sequences cannot go backward in addresses. This means
we've incorrectly ordered the statements in the sequence. */
- assert ((offsetT) addr_delta >= 0);
+ gas_assert ((offsetT) addr_delta >= 0);
/* INT_MAX is a signal that this is actually a DW_LNE_end_sequence. */
if (line_delta != INT_MAX)
p += output_leb128 (p, line_delta, 1);
}
- exp = symbol_get_value_expression (frag->fr_symbol);
+ pexp = symbol_get_value_expression (frag->fr_symbol);
line_seg = subseg_get (".debug_line", 0);
/* The DW_LNS_fixed_advance_pc opcode has a 2-byte operand so it can
if (addr_delta > 50000)
{
symbolS *to_sym;
- expressionS expr;
+ expressionS exp;
- assert (exp->X_op = O_subtract);
- to_sym = exp->X_add_symbol;
+ gas_assert (pexp->X_op == O_subtract);
+ to_sym = pexp->X_add_symbol;
*p++ = DW_LNS_extended_op;
p += output_leb128 (p, sizeof_address + 1, 0);
*p++ = DW_LNE_set_address;
- expr.X_op = O_symbol;
- expr.X_add_symbol = to_sym;
- expr.X_add_number = 0;
+ exp.X_op = O_symbol;
+ exp.X_add_symbol = to_sym;
+ exp.X_add_number = 0;
subseg_change (line_seg, 0);
- emit_expr_fix (&expr, sizeof_address, frag, p);
+ emit_expr_fix (&exp, sizeof_address, frag, p);
p += sizeof_address;
}
else
{
*p++ = DW_LNS_fixed_advance_pc;
subseg_change (line_seg, 0);
- emit_expr_fix (exp, 2, frag, p);
+ emit_expr_fix (pexp, 2, frag, p);
p += 2;
}
else
*p++ = DW_LNS_copy;
- assert (p == end);
+ gas_assert (p == end);
}
/* Generate a variant frag that we can use to relax address/line
static void
relax_inc_line_addr (int line_delta, symbolS *to_sym, symbolS *from_sym)
{
- expressionS expr;
+ expressionS exp;
int max_chars;
- expr.X_op = O_subtract;
- expr.X_add_symbol = to_sym;
- expr.X_op_symbol = from_sym;
- expr.X_add_number = 0;
+ exp.X_op = O_subtract;
+ exp.X_add_symbol = to_sym;
+ exp.X_op_symbol = from_sym;
+ exp.X_add_number = 0;
/* The maximum size of the frag is the line delta with a maximum
sized address delta. */
max_chars = size_inc_line_addr (line_delta, -DWARF2_LINE_MIN_INSN_LENGTH);
frag_var (rs_dwarf2dbg, max_chars, max_chars, 1,
- make_expr_symbol (&expr), line_delta, NULL);
+ make_expr_symbol (&exp), line_delta, NULL);
}
/* The function estimates the size of a rs_dwarf2dbg variant frag
/* fr_var carries the max_chars that we created the fragment with.
fr_subtype carries the current expected length. We must, of
course, have allocated enough memory earlier. */
- assert (frag->fr_var >= (int) frag->fr_subtype);
+ gas_assert (frag->fr_var >= (int) frag->fr_subtype);
if (DWARF2_USE_FIXED_ADVANCE_PC)
emit_fixed_inc_line_addr (frag->fr_offset, addr_diff, frag,
out_uleb128 (column);
}
+ if (e->loc.discriminator != 0)
+ {
+ out_opcode (DW_LNS_extended_op);
+ out_leb128 (1 + sizeof_leb128 (e->loc.discriminator, 0));
+ out_opcode (DW_LNE_set_discriminator);
+ out_uleb128 (e->loc.discriminator);
+ }
+
if (isa != e->loc.isa)
{
isa = e->loc.isa;
for (i = 1; i < files_in_use; ++i)
{
+ const char *fullfilename;
+
if (files[i].filename == NULL)
{
as_bad (_("unassigned file number %ld"), (long) i);
continue;
}
- size = strlen (files[i].filename) + 1;
+ fullfilename = DWARF2_FILE_NAME (files[i].filename,
+ files[i].dir ? dirs [files [i].dir] : "");
+ size = strlen (fullfilename) + 1;
cp = frag_more (size);
- memcpy (cp, files[i].filename, size);
+ memcpy (cp, fullfilename, size);
out_uleb128 (files[i].dir); /* directory number */
- out_uleb128 (0); /* last modification timestamp */
- out_uleb128 (0); /* filesize */
+ /* Output the last modification timestamp. */
+ out_uleb128 (DWARF2_FILE_TIME_NAME (files[i].filename,
+ files[i].dir ? dirs [files [i].dir] : ""));
+ /* Output the filesize. */
+ out_uleb128 (DWARF2_FILE_SIZE_NAME (files[i].filename,
+ files[i].dir ? dirs [files [i].dir] : ""));
}
/* Terminate filename list. */
to the end of the section. */
static int
-out_header (asection *sec, expressionS *expr)
+out_header (asection *sec, expressionS *exp)
{
symbolS *start_sym;
symbolS *end_sym;
end_sym = symbol_temp_make ();
/* Total length of the information. */
- expr->X_op = O_subtract;
- expr->X_add_symbol = end_sym;
- expr->X_op_symbol = start_sym;
+ exp->X_op = O_subtract;
+ exp->X_add_symbol = end_sym;
+ exp->X_op_symbol = start_sym;
switch (DWARF2_FORMAT (sec))
{
case dwarf2_format_32bit:
- expr->X_add_number = -4;
- emit_expr (expr, 4);
+ exp->X_add_number = -4;
+ emit_expr (exp, 4);
return 4;
case dwarf2_format_64bit:
- expr->X_add_number = -12;
+ exp->X_add_number = -12;
out_four (-1);
- emit_expr (expr, 8);
+ emit_expr (exp, 8);
return 8;
case dwarf2_format_64bit_irix:
- expr->X_add_number = -8;
- emit_expr (expr, 8);
+ exp->X_add_number = -8;
+ emit_expr (exp, 8);
return 8;
}
static void
out_debug_line (segT line_seg)
{
- expressionS expr;
+ expressionS exp;
symbolS *prologue_end;
symbolS *line_end;
struct line_seg *s;
int sizeof_offset;
- sizeof_offset = out_header (line_seg, &expr);
- line_end = expr.X_add_symbol;
+ sizeof_offset = out_header (line_seg, &exp);
+ line_end = exp.X_add_symbol;
/* Version. */
- out_two (2);
+ out_two (DWARF2_LINE_VERSION);
/* Length of the prologue following this length. */
prologue_end = symbol_temp_make ();
- expr.X_add_symbol = prologue_end;
- expr.X_add_number = - (4 + 2 + 4);
- emit_expr (&expr, sizeof_offset);
+ exp.X_add_symbol = prologue_end;
+ exp.X_add_number = - (4 + 2 + 4);
+ emit_expr (&exp, sizeof_offset);
/* Parameters of the state machine. */
out_byte (DWARF2_LINE_MIN_INSN_LENGTH);
/* For each section, emit a statement program. */
for (s = all_segs; s; s = s->next)
- process_entries (s->seg, s->head->head);
+ if (SEG_NORMAL (s->seg))
+ process_entries (s->seg, s->head->head);
+ else
+ as_warn ("dwarf line number information for %s ignored",
+ segment_name (s->seg));
symbol_set_value_now (line_end);
}
{
unsigned int addr_size = sizeof_address;
struct line_seg *s;
- expressionS expr;
+ expressionS exp;
unsigned int i;
subseg_set (ranges_seg, 0);
end = symbol_temp_new (s->seg, get_frag_fix (frag, s->seg), frag);
s->text_end = end;
- expr.X_op = O_symbol;
- expr.X_add_symbol = beg;
- expr.X_add_number = 0;
- emit_expr (&expr, addr_size);
+ exp.X_op = O_symbol;
+ exp.X_add_symbol = beg;
+ exp.X_add_number = 0;
+ emit_expr (&exp, addr_size);
- expr.X_op = O_symbol;
- expr.X_add_symbol = end;
- expr.X_add_number = 0;
- emit_expr (&expr, addr_size);
+ exp.X_op = O_symbol;
+ exp.X_add_symbol = end;
+ exp.X_add_number = 0;
+ emit_expr (&exp, addr_size);
}
/* End of Range Entry. */
{
unsigned int addr_size = sizeof_address;
struct line_seg *s;
- expressionS expr;
+ expressionS exp;
symbolS *aranges_end;
char *p;
int sizeof_offset;
- sizeof_offset = out_header (aranges_seg, &expr);
- aranges_end = expr.X_add_symbol;
+ sizeof_offset = out_header (aranges_seg, &exp);
+ aranges_end = exp.X_add_symbol;
/* Version. */
- out_two (2);
+ out_two (DWARF2_ARANGES_VERSION);
/* Offset to .debug_info. */
TC_DWARF2_EMIT_OFFSET (section_symbol (info_seg), sizeof_offset);
end = symbol_temp_new (s->seg, get_frag_fix (frag, s->seg), frag);
s->text_end = end;
- expr.X_op = O_symbol;
- expr.X_add_symbol = beg;
- expr.X_add_number = 0;
- emit_expr (&expr, addr_size);
+ exp.X_op = O_symbol;
+ exp.X_add_symbol = beg;
+ exp.X_add_number = 0;
+ emit_expr (&exp, addr_size);
- expr.X_op = O_subtract;
- expr.X_add_symbol = end;
- expr.X_op_symbol = beg;
- expr.X_add_number = 0;
- emit_expr (&expr, addr_size);
+ exp.X_op = O_subtract;
+ exp.X_add_symbol = end;
+ exp.X_op_symbol = beg;
+ exp.X_add_number = 0;
+ emit_expr (&exp, addr_size);
}
p = frag_more (2 * addr_size);
if (all_segs->next == NULL)
{
out_abbrev (DW_AT_low_pc, DW_FORM_addr);
- out_abbrev (DW_AT_high_pc, DW_FORM_addr);
+ if (DWARF2_VERSION < 4)
+ out_abbrev (DW_AT_high_pc, DW_FORM_addr);
+ else
+ out_abbrev (DW_AT_high_pc, (sizeof_address == 4
+ ? DW_FORM_data4 : DW_FORM_data8));
}
else
{
char producer[128];
const char *comp_dir;
const char *dirname;
- expressionS expr;
+ expressionS exp;
symbolS *info_end;
char *p;
int len;
int sizeof_offset;
- sizeof_offset = out_header (info_seg, &expr);
- info_end = expr.X_add_symbol;
+ sizeof_offset = out_header (info_seg, &exp);
+ info_end = exp.X_add_symbol;
/* DWARF version. */
- out_two (2);
+ out_two (DWARF2_VERSION);
/* .debug_abbrev offset */
TC_DWARF2_EMIT_OFFSET (section_symbol (abbrev_seg), sizeof_offset);
if (all_segs->next == NULL)
{
/* DW_AT_low_pc */
- expr.X_op = O_symbol;
- expr.X_add_symbol = all_segs->text_start;
- expr.X_add_number = 0;
- emit_expr (&expr, sizeof_address);
+ exp.X_op = O_symbol;
+ exp.X_add_symbol = all_segs->text_start;
+ exp.X_add_number = 0;
+ emit_expr (&exp, sizeof_address);
/* DW_AT_high_pc */
- expr.X_op = O_symbol;
- expr.X_add_symbol = all_segs->text_end;
- expr.X_add_number = 0;
- emit_expr (&expr, sizeof_address);
+ if (DWARF2_VERSION < 4)
+ exp.X_op = O_symbol;
+ else
+ {
+ exp.X_op = O_subtract;
+ exp.X_op_symbol = all_segs->text_start;
+ }
+ exp.X_add_symbol = all_segs->text_end;
+ exp.X_add_number = 0;
+ emit_expr (&exp, sizeof_address);
}
else
{
{
dirname = remap_debug_filename (dirs[files[1].dir]);
len = strlen (dirname);
+#ifdef TE_VMS
+ /* Already has trailing slash. */
+ p = frag_more (len);
+ memcpy (p, dirname, len);
+#else
p = frag_more (len + 1);
memcpy (p, dirname, len);
INSERT_DIR_SEPARATOR (p, len);
+#endif
}
len = strlen (files[1].filename) + 1;
p = frag_more (len);
symbol_set_value_now (info_end);
}
+void
+dwarf2_init (void)
+{
+ all_segs_hash = hash_new ();
+ last_seg_ptr = &all_segs;
+}
+
+
/* Finish the dwarf2 debug sections. We emit .debug.line if there
were any .file/.loc directives, or --gdwarf2 was given, or if the
- file has a non-empty .debug_info section. If we emit .debug_line,
- and the .debug_info section is empty, we also emit .debug_info,
- .debug_aranges and .debug_abbrev. ALL_SEGS will be non-null if
- there were any .file/.loc directives, or --gdwarf2 was given and
- there were any located instructions emitted. */
+ file has a non-empty .debug_info section and an empty .debug_line
+ section. If we emit .debug_line, and the .debug_info section is
+ empty, we also emit .debug_info, .debug_aranges and .debug_abbrev.
+ ALL_SEGS will be non-null if there were any .file/.loc directives,
+ or --gdwarf2 was given and there were any located instructions
+ emitted. */
void
dwarf2_finish (void)
struct line_seg *s;
segT info_seg;
int emit_other_sections = 0;
+ int empty_debug_line = 0;
info_seg = bfd_get_section_by_name (stdoutput, ".debug_info");
emit_other_sections = info_seg == NULL || !seg_not_empty_p (info_seg);
- if (!all_segs && emit_other_sections)
- /* There is no line information and no non-empty .debug_info
- section. */
+ line_seg = bfd_get_section_by_name (stdoutput, ".debug_line");
+ empty_debug_line = line_seg == NULL || !seg_not_empty_p (line_seg);
+
+ /* We can't construct a new debug_line section if we already have one.
+ Give an error. */
+ if (all_segs && !empty_debug_line)
+ as_fatal ("duplicate .debug_line sections");
+
+ if ((!all_segs && emit_other_sections)
+ || (!emit_other_sections && !empty_debug_line))
+ /* If there is no line information and no non-empty .debug_info
+ section, or if there is both a non-empty .debug_info and a non-empty
+ .debug_line, then we do nothing. */
return;
/* Calculate the size of an address for the target machine. */
/* For each subsection, chain the debug entries together. */
for (s = all_segs; s; s = s->next)
{
- struct line_subseg *ss = s->head;
- struct line_entry **ptail = ss->ptail;
+ struct line_subseg *lss = s->head;
+ struct line_entry **ptail = lss->ptail;
- while ((ss = ss->next) != NULL)
+ while ((lss = lss->next) != NULL)
{
- *ptail = ss->head;
- ptail = ss->ptail;
+ *ptail = lss->head;
+ ptail = lss->ptail;
}
}
segT aranges_seg;
segT ranges_seg;
- assert (all_segs);
+ gas_assert (all_segs);
info_seg = subseg_new (".debug_info", 0);
abbrev_seg = subseg_new (".debug_abbrev", 0);
projects / deliverable / binutils-gdb.git / blobdiff