diff options
Diffstat (limited to 'gas/dwarf2dbg.c')
| -rw-r--r-- | gas/dwarf2dbg.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/gas/dwarf2dbg.c b/gas/dwarf2dbg.c index e0ea399..1c21d58 100644 --- a/gas/dwarf2dbg.c +++ b/gas/dwarf2dbg.c @@ -226,9 +226,15 @@ static unsigned int dirs_in_use = 0; static unsigned int dirs_allocated = 0; /* TRUE when we've seen a .loc directive recently. Used to avoid - doing work when there's nothing to do. */ + doing work when there's nothing to do. Will be reset by + dwarf2_consume_line_info. */ bfd_boolean dwarf2_loc_directive_seen; +/* TRUE when we've seen any .loc directive at any time during parsing. + Indicates the user wants us to generate a .debug_line section. + Used in dwarf2_finish as sanity check. */ +static bfd_boolean dwarf2_any_loc_directive_seen; + /* TRUE when we're supposed to set the basic block mark whenever a label is seen. */ bfd_boolean dwarf2_loc_mark_labels; @@ -1290,7 +1296,7 @@ dwarf2_directive_loc (int dummy ATTRIBUTE_UNUSED) } demand_empty_rest_of_line (); - dwarf2_loc_directive_seen = TRUE; + dwarf2_any_loc_directive_seen = dwarf2_loc_directive_seen = TRUE; debug_type = DEBUG_NONE; /* If we were given a view id, emit the row right away. */ @@ -2737,7 +2743,7 @@ dwarf2_init (void) /* Finish the dwarf2 debug sections. We emit .debug.line if there - were any .file/.loc directives, or --gdwarf2 was given, or if the + were any .file/.loc directives, or --gdwarf2 was given, and if the 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. @@ -2761,8 +2767,10 @@ dwarf2_finish (void) 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) + Give an error if we have seen any .loc, otherwise trust the user + knows what they are doing and want to generate the .debug_line + (and all other debug sections) themselves. */ + if (all_segs && !empty_debug_line && dwarf2_any_loc_directive_seen) as_fatal ("duplicate .debug_line sections"); if ((!all_segs && emit_other_sections) @@ -2776,8 +2784,12 @@ dwarf2_finish (void) sizeof_address = DWARF2_ADDR_SIZE (stdoutput); /* Create and switch to the line number section. */ - line_seg = subseg_new (".debug_line", 0); - bfd_set_section_flags (line_seg, SEC_READONLY | SEC_DEBUGGING | SEC_OCTETS); + if (empty_debug_line) + { + line_seg = subseg_new (".debug_line", 0); + bfd_set_section_flags (line_seg, + SEC_READONLY | SEC_DEBUGGING | SEC_OCTETS); + } /* For each subsection, chain the debug entries together. */ for (s = all_segs; s; s = s->next) @@ -2803,7 +2815,8 @@ dwarf2_finish (void) } } - out_debug_line (line_seg); + if (empty_debug_line) + out_debug_line (line_seg); /* If this is assembler generated line info, and there is no debug_info already, we need .debug_info, .debug_abbrev and |