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prefer exe header's default entry point if it doesn't match expected defaults

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This commit is contained in:
Ryan Fleury
2024-01-26 13:59:17 -08:00
parent b76a8b9854
commit 207e46c8e8
1 changed files with 37 additions and 1 deletions
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src/ctrl/ctrl_core.c
+37 -1
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@@ -2032,6 +2032,20 @@ ctrl_thread__launch_and_init(CTRL_Msg *msg)
RADDBG_ParsedNameMap map = {0};
raddbg_name_map_parse(rdbg, unparsed_map, &map);
// rjf: look up binary's built-in entry point name
String8 builtin_entry_point_name = {0};
if(rdbg->scope_vmap != 0 && rdbg->procedures != 0)
{
U64 builtin_entry_point_voff = dbgi->pe.entry_point;
U64 scope_idx = raddbg_vmap_idx_from_voff(rdbg->scope_vmap, rdbg->scope_vmap_count, builtin_entry_point_voff);
RADDBG_Scope *scope = &rdbg->scopes[scope_idx];
U64 proc_idx = scope->proc_idx;
RADDBG_Procedure *procedure = &rdbg->procedures[proc_idx];
U64 name_size = 0;
U8 *name_ptr = raddbg_string_from_idx(rdbg, procedure->name_string_idx, &name_size);
builtin_entry_point_name = str8(name_ptr, name_size);
}
// rjf: grab entry point symbol names we might want to run to
String8 default_entry_points[] =
{
@@ -2045,8 +2059,30 @@ ctrl_thread__launch_and_init(CTRL_Msg *msg)
str8_lit("wmainCRTStartup"),
};
// rjf: find voff for one of the custom entry points attached to this msg
// rjf: determine if built-in entry point is not one of the defaults, and thus
// specified by user
B32 builtin_entry_point_is_special = 0;
if(builtin_entry_point_name.size != 0)
{
builtin_entry_point_is_special = 1;
for(U64 idx = 0; idx < ArrayCount(default_entry_points); idx += 1)
{
if(str8_match(default_entry_points[idx], builtin_entry_point_name, 0))
{
builtin_entry_point_is_special = 0;
break;
}
}
}
// rjf: builtin entry point is unique -> use entry point voff
U64 voff = 0;
if(voff == 0 && builtin_entry_point_is_special)
{
voff = dbgi->pe.entry_point;
}
// rjf: find voff for one of the custom entry points attached to this msg
if(voff == 0)
{
for(String8Node *n = msg->strings.first; n != 0; n = n->next)