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first pass at loader portion of new dbgi layer replacement; set up ctrl entity for per-module debug info selection path info

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This commit is contained in:
Ryan Fleury
2024-05-20 16:28:52 -07:00
parent 49eb834e2b
commit 6e41bdf11b
7 changed files with 871 additions and 1 deletions
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src/ctrl/ctrl_core.c
+69 -1
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@@ -481,6 +481,8 @@ ctrl_entity_store_release(CTRL_EntityStore *cache)
arena_release(cache->arena);
}
//- rjf: string allocation/deletion
internal U64
ctrl_name_bucket_idx_from_string_size(U64 size)
{
@@ -2934,6 +2936,7 @@ ctrl_thread__module_open(CTRL_MachineID machine_id, DMN_Handle process, DMN_Hand
U64 pdatas_count = 0;
U64 entry_point_voff = 0;
Rng1U64 tls_vaddr_range = {0};
String8 builtin_debug_info_path = {0};
ProfScope("unpack relevant PE info")
{
B32 is_valid = 1;
@@ -3067,11 +3070,75 @@ ctrl_thread__module_open(CTRL_MachineID machine_id, DMN_Handle process, DMN_Hand
// rjf: calculate TLS vaddr range
tls_vaddr_range = r1u64(tls_header.index_address, tls_header.index_address+sizeof(U32));
// rjf: grab data about debug info
U32 dbg_time = 0;
U32 dbg_age = 0;
OS_Guid dbg_guid = {0};
if(data_dir_count > PE_DataDirectoryIndex_DEBUG)
{
// rjf: read data dir
PE_DataDirectory dir = {0};
dmn_process_read_struct(process, vaddr_range.min + opt_ext_off_range.min + reported_data_dir_offset + sizeof(PE_DataDirectory)*PE_DataDirectoryIndex_DEBUG, &dir);
// rjf: read debug directory
PE_DebugDirectory dbg_data = {0};
dmn_process_read_struct(process, vaddr_range.min+(U64)dir.virt_off, &dbg_data);
// rjf: extract external file info from codeview header
if(dbg_data.type == PE_DebugDirectoryType_CODEVIEW)
{
U64 dbg_path_off = 0;
U64 dbg_path_size = 0;
U64 cv_offset = dbg_data.voff;
U32 cv_magic = 0;
dmn_process_read_struct(process, vaddr_range.min+cv_offset, &cv_magic);
switch(cv_magic)
{
default:break;
case PE_CODEVIEW_PDB20_MAGIC:
{
PE_CvHeaderPDB20 cv = {0};
dmn_process_read_struct(process, vaddr_range.min+cv_offset, &cv);
dbg_time = cv.time;
dbg_age = cv.age;
dbg_path_off = cv_offset + sizeof(cv);
}break;
case PE_CODEVIEW_PDB70_MAGIC:
{
PE_CvHeaderPDB70 cv = {0};
dmn_process_read_struct(process, vaddr_range.min+cv_offset, &cv);
dbg_guid = cv.guid;
dbg_age = cv.age;
dbg_path_off = cv_offset + sizeof(cv);
}break;
}
if(dbg_path_off > 0)
{
Temp scratch = scratch_begin(0, 0);
String8List parts = {0};
for(U64 off = dbg_path_off;; off += 256)
{
U8 bytes[256] = {0};
dmn_process_read(process, r1u64(vaddr_range.min+off, vaddr_range.min+off+sizeof(bytes)), bytes);
U64 size = cstring8_length(&bytes[0]);
String8 part = str8(bytes, size);
str8_list_push(scratch.arena, &parts, part);
if(size < sizeof(bytes))
{
break;
}
}
builtin_debug_info_path = str8_list_join(arena, &parts, 0);
scratch_end(scratch);
}
}
}
}
}
//////////////////////////////
//- rjf: insert into cache
//- rjf: insert info into cache
//
{
U64 hash = ctrl_hash_from_machine_id_handle(machine_id, module);
@@ -3100,6 +3167,7 @@ ctrl_thread__module_open(CTRL_MachineID machine_id, DMN_Handle process, DMN_Hand
node->pdatas = pdatas;
node->pdatas_count = pdatas_count;
node->entry_point_voff = entry_point_voff;
node->builtin_debug_info_path = builtin_debug_info_path;
}
}
}