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dbghelp/dwarf: Allow tweaking from env variable which DWARF version is to be loaded. 

This is a temporary feature while implementing the required bits for Dwarf3
and Dwarf4 format.

Signed-off-by: Eric Pouech <eric.pouech@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Eric Pouech 2021-09-08 08:33:49 +02:00 committed by Alexandre Julliard
parent 6aef301e08
commit 31b6640e48
1 changed files with 16 additions and 3 deletions
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19
dlls/dbghelp/dwarf.c
View File

@ -2343,6 +2343,8 @@ static BOOL dwarf2_parse_compilation_unit(const dwarf2_section_t* sections,
unsigned short cu_version;
ULONG_PTR cu_abbrev_offset;
BOOL ret = FALSE;
/* FIXME this is a temporary configuration while adding support for dwarf3&4 bits */
static LONG max_supported_dwarf_version = 0;
cu_length = dwarf2_parse_u4(mod_ctx);
cu_ctx.data = mod_ctx->data;
@ -2359,10 +2361,21 @@ static BOOL dwarf2_parse_compilation_unit(const dwarf2_section_t* sections,
TRACE("- abbrev_offset: %lu\n", cu_abbrev_offset);
TRACE("- word_size: %u\n", cu_ctx.word_size);
if (cu_version != 2)
if (max_supported_dwarf_version == 0)
{
WARN("%u DWARF version unsupported. Wine dbghelp only support DWARF 2.\n",
cu_version);
char* env = getenv("DBGHELP_DWARF_VERSION");
LONG v = env ? atol(env) : 2;
max_supported_dwarf_version = (v >= 2 && v <= 4) ? v : 2;
}
if (cu_version < 2 || cu_version > max_supported_dwarf_version)
{
if (max_supported_dwarf_version > 2)
WARN("%u DWARF version unsupported. Wine dbghelp only support DWARF 2 up to %u.\n",
cu_version, max_supported_dwarf_version);
else
WARN("%u DWARF version unsupported. Wine dbghelp only support DWARF 2.\n",
cu_version);
return FALSE;
}