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dbghelp/dwarf: Load the alternate dwarf file content as we do for a regular dwarf module. 

Signed-off-by: Eric Pouech <eric.pouech@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Eric Pouech 2021-09-16 11:10:10 +02:00 committed by Alexandre Julliard
parent 9f74ac4b3b
commit 517f614bc8
1 changed files with 54 additions and 36 deletions
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90
dlls/dbghelp/dwarf.c
View File

@ -191,6 +191,7 @@ typedef struct dwarf2_dwz_alternate_s
struct image_file_map* fmap;
dwarf2_section_t sections[section_max];
struct image_section_map sectmap[section_max];
dwarf2_parse_module_context_t module_ctx;
} dwarf2_dwz_alternate_t;
enum unit_status
@ -3689,6 +3690,41 @@ static void dwarf2_module_remove(struct process* pcs, struct module_format* modf
HeapFree(GetProcessHeap(), 0, modfmt);
}
static BOOL dwarf2_load_CU_module(dwarf2_parse_module_context_t* module_ctx, struct module* module,
dwarf2_section_t* sections, ULONG_PTR load_offset,
const struct elf_thunk_area* thunks)
{
dwarf2_traverse_context_t mod_ctx;
unsigned i;
module_ctx->sections = sections;
module_ctx->module = module;
module_ctx->thunks = thunks;
module_ctx->load_offset = load_offset;
memset(module_ctx->symt_cache, 0, sizeof(module_ctx->symt_cache));
module_ctx->symt_cache[sc_void] = &symt_new_basic(module_ctx->module, btVoid, "void", 0)->symt;
module_ctx->symt_cache[sc_unknown] = &symt_new_basic(module_ctx->module, btNoType, "# unknown", 0)->symt;
vector_init(&module_ctx->unit_contexts, sizeof(dwarf2_parse_context_t), 16);
module_ctx->cu_versions = 0;
/* phase I: parse all CU heads */
mod_ctx.data = sections[section_debug].address;
mod_ctx.end_data = mod_ctx.data + sections[section_debug].size;
while (mod_ctx.data < mod_ctx.end_data)
{
dwarf2_parse_context_t* unit_ctx = vector_add(&module_ctx->unit_contexts, &module_ctx->module->pool);
unit_ctx->module_ctx = module_ctx;
dwarf2_parse_compilation_unit_head(unit_ctx, &mod_ctx);
}
/* phase2: load content of all CU */
for (i = 0; i < module_ctx->unit_contexts.num_elts; ++i)
dwarf2_parse_compilation_unit((dwarf2_parse_context_t*)vector_at(&module_ctx->unit_contexts, i));
return TRUE;
}
static dwarf2_dwz_alternate_t* dwarf2_load_dwz(struct image_file_map* fmap, struct module* module)
{
struct image_file_map* fmap_dwz;
@ -3710,6 +3746,8 @@ static dwarf2_dwz_alternate_t* dwarf2_load_dwz(struct image_file_map* fmap, stru
dwarf2_init_section(&dwz->sections[section_line], fmap_dwz, ".debug_line", ".zdebug_line", &dwz->sectmap[section_line]);
dwarf2_init_section(&dwz->sections[section_ranges], fmap_dwz, ".debug_ranges", ".zdebug_ranges", &dwz->sectmap[section_ranges]);
dwz->module_ctx.dwz = NULL;
dwarf2_load_CU_module(&dwz->module_ctx, module, dwz->sections, 0/*FIXME*/, NULL);
return dwz;
}
@ -3732,20 +3770,29 @@ static void dwarf2_unload_dwz(dwarf2_dwz_alternate_t* dwz)
HeapFree(GetProcessHeap(), 0, dwz);
}
static BOOL dwarf2_unload_CU_module(dwarf2_parse_module_context_t* module_ctx)
{
unsigned i;
for (i = 0; i < module_ctx->unit_contexts.num_elts; ++i)
{
dwarf2_parse_context_t* unit = vector_at(&module_ctx->unit_contexts, i);
if (unit->status != UNIT_ERROR)
pool_destroy(&unit->pool);
}
dwarf2_unload_dwz(module_ctx->dwz);
return TRUE;
}
BOOL dwarf2_parse(struct module* module, ULONG_PTR load_offset,
const struct elf_thunk_area* thunks,
struct image_file_map* fmap)
{
dwarf2_section_t eh_frame, section[section_max];
dwarf2_traverse_context_t mod_ctx;
struct image_section_map debug_sect, debug_str_sect, debug_abbrev_sect,
debug_line_sect, debug_ranges_sect, eh_frame_sect;
BOOL ret = TRUE;
struct module_format* dwarf2_modfmt;
dwarf2_parse_module_context_t module_ctx;
unsigned i;
module_ctx.dwz = dwarf2_load_dwz(fmap, module);
if (!dwarf2_init_section(&eh_frame, fmap, ".eh_frame", NULL, &eh_frame_sect))
/* lld produces .eh_fram to avoid generating a long name */
@ -3798,30 +3845,8 @@ BOOL dwarf2_parse(struct module* module, ULONG_PTR load_offset,
dwarf2_modfmt->u.dwarf2_info->cuheads = NULL;
dwarf2_modfmt->u.dwarf2_info->num_cuheads = 0;
module_ctx.sections = section;
module_ctx.module = dwarf2_modfmt->module;
module_ctx.thunks = thunks;
module_ctx.load_offset = load_offset;
memset(module_ctx.symt_cache, 0, sizeof(module_ctx.symt_cache));
module_ctx.symt_cache[sc_void] = &symt_new_basic(module_ctx.module, btVoid, "void", 0)->symt;
module_ctx.symt_cache[sc_unknown] = &symt_new_basic(module_ctx.module, btNoType, "# unknown", 0)->symt;
vector_init(&module_ctx.unit_contexts, sizeof(dwarf2_parse_context_t), 16);
module_ctx.cu_versions = 0;
/* phase I: parse all CU heads */
mod_ctx.data = section[section_debug].address;
mod_ctx.end_data = mod_ctx.data + section[section_debug].size;
while (mod_ctx.data < mod_ctx.end_data)
{
dwarf2_parse_context_t* unit_ctx = vector_add(&module_ctx.unit_contexts, &module_ctx.module->pool);
unit_ctx->module_ctx = &module_ctx;
dwarf2_parse_compilation_unit_head(unit_ctx, &mod_ctx);
}
/* phase2: load content of all CU */
for (i = 0; i < module_ctx.unit_contexts.num_elts; ++i)
dwarf2_parse_compilation_unit((dwarf2_parse_context_t*)vector_at(&module_ctx.unit_contexts, i));
module_ctx.dwz = dwarf2_load_dwz(fmap, module);
dwarf2_load_CU_module(&module_ctx, module, section, load_offset, thunks);
dwarf2_modfmt->module->module.SymType = SymDia;
/* hide dwarf versions in CVSig
@ -3835,15 +3860,8 @@ BOOL dwarf2_parse(struct module* module, ULONG_PTR load_offset,
dwarf2_modfmt->module->module.SourceIndexed = TRUE;
dwarf2_modfmt->module->module.Publics = TRUE;
for (i = 0; i < module_ctx.unit_contexts.num_elts; ++i)
{
dwarf2_parse_context_t* unit = vector_at(&module_ctx.unit_contexts, i);
if (unit->status != UNIT_ERROR)
pool_destroy(&unit->pool);
}
dwarf2_unload_CU_module(&module_ctx);
leave:
dwarf2_unload_dwz(module_ctx.dwz);
dwarf2_fini_section(&section[section_debug]);
dwarf2_fini_section(&section[section_abbrev]);