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libbacktrace: update to current version from GCC trunk

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This adds DWARF 5 support as well as an enhanced testsuite.

Patch assembled by Than McIntosh.
This commit is contained in:
Ian Lance Taylor
2019-12-23 18:55:51 -08:00
parent 5a99ff7fed
commit 559ab7cab4
62 changed files with 17898 additions and 3864 deletions
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56
pecoff.c
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@@ -1,5 +1,5 @@
/* pecoff.c -- Get debug data from a PE/COFFF file for backtraces.
Copyright (C) 2015-2018 Free Software Foundation, Inc.
Copyright (C) 2015-2019 Free Software Foundation, Inc.
Adapted from elf.c by Tristan Gingold, AdaCore.
Redistribution and use in source and binary forms, with or without
@@ -133,19 +133,7 @@ typedef struct {
uint16_t sc;
} b_coff_internal_symbol;
/* An index of sections we care about. */
enum debug_section
{
DEBUG_INFO,
DEBUG_LINE,
DEBUG_ABBREV,
DEBUG_RANGES,
DEBUG_STR,
DEBUG_MAX
};
/* Names of sections, indexed by enum debug_section. */
/* Names of sections, indexed by enum dwarf_section in internal.h. */
static const char * const debug_section_names[DEBUG_MAX] =
{
@@ -153,7 +141,11 @@ static const char * const debug_section_names[DEBUG_MAX] =
".debug_line",
".debug_abbrev",
".debug_ranges",
".debug_str"
".debug_str",
".debug_addr",
".debug_str_offsets",
".debug_line_str",
".debug_rnglists"
};
/* Information we gather for the sections we care about. */
@@ -164,8 +156,6 @@ struct debug_section_info
off_t offset;
/* Section size. */
size_t size;
/* Section contents, after read from file. */
const unsigned char *data;
};
/* Information we keep for an coff symbol. */
@@ -616,6 +606,7 @@ coff_add (struct backtrace_state *state, int descriptor,
struct backtrace_view debug_view;
int debug_view_valid;
uintptr_t image_base;
struct dwarf_sections dwarf_sections;
*found_sym = 0;
*found_dwarf = 0;
@@ -848,26 +839,20 @@ coff_add (struct backtrace_state *state, int descriptor,
for (i = 0; i < (int) DEBUG_MAX; ++i)
{
if (sections[i].size == 0)
sections[i].data = NULL;
size_t size = sections[i].size;
dwarf_sections.size[i] = size;
if (size == 0)
dwarf_sections.data[i] = NULL;
else
sections[i].data = ((const unsigned char *) debug_view.data
+ (sections[i].offset - min_offset));
dwarf_sections.data[i] = ((const unsigned char *) debug_view.data
+ (sections[i].offset - min_offset));
}
if (!backtrace_dwarf_add (state, /* base_address */ 0,
sections[DEBUG_INFO].data,
sections[DEBUG_INFO].size,
sections[DEBUG_LINE].data,
sections[DEBUG_LINE].size,
sections[DEBUG_ABBREV].data,
sections[DEBUG_ABBREV].size,
sections[DEBUG_RANGES].data,
sections[DEBUG_RANGES].size,
sections[DEBUG_STR].data,
sections[DEBUG_STR].size,
0, /* FIXME */
error_callback, data, fileline_fn))
if (!backtrace_dwarf_add (state, /* base_address */ 0, &dwarf_sections,
0, /* FIXME: is_bigendian */
NULL, /* altlink */
error_callback, data, fileline_fn,
NULL /* returned fileline_entry */))
goto fail;
*found_dwarf = 1;
@@ -920,7 +905,8 @@ backtrace_initialize (struct backtrace_state *state,
if (found_sym)
backtrace_atomic_store_pointer (&state->syminfo_fn, coff_syminfo);
else
__sync_bool_compare_and_swap (&state->syminfo_fn, NULL, coff_nosyms);
(void) __sync_bool_compare_and_swap (&state->syminfo_fn, NULL,
coff_nosyms);
}
if (!state->threaded)