eliminate backend-specific module parsing from debug engine ctrl thread; just pass that info back via the demon event

src/demon/demon_core.c

@@ -119,5 +119,6 @@ dmn_event_list_push(Arena *arena, DMN_EventList *list)
   SLLQueuePush(list->first, list->last, n);
   list->count += 1;
   DMN_Event *result = &n->v;
+  result->module_info = &dmn_module_info_nil;
   return result;
 }

src/demon/demon_core.h

@@ -69,33 +69,72 @@ struct DMN_HandleArray
 ////////////////////////////////
 //~ rjf: Event Types
 
+typedef struct DMN_ModuleInfo DMN_ModuleInfo;
+struct DMN_ModuleInfo
+{
+  // rjf: image architecture
+  Arch arch;
+  
+  // rjf: image virtual size
+  U64 vsize;
+  
+  // rjf: entry point
+  U64 entry_point_voff;
+  
+  // rjf: module path
+  String8 module_path;
+  
+  // rjf: debug info key
+  String8 debug_info_path;
+  Guid debug_info_guid;
+  U64 debug_info_timestamp;
+  U64 debug_info_age;
+  
+  // rjf: thread-local storage info
+  U64 tls_index;
+  U64 tls_offset;
+  
+  // rjf: unwinding info
+  Rng1U64 pe_intel_pdatas_vaddr_range;
+  Rng1U64 eh_frame_header_vaddr_range;
+  U64 cfi_rebase;
+  
+  // rjf: special raddbg data
+  Rng1U64 raddbg_info_voff_range;
+  U64 raddbg_is_attached_marker_voff;
+};
+
 typedef struct DMN_Event DMN_Event;
 struct DMN_Event
 {
+  // rjf: categories
   DMN_EventKind kind;
   DMN_ErrorKind error_kind;
   DMN_MemoryEventKind memory_kind;
   DMN_ExceptionKind exception_kind;
+  
+  // rjf: entities
   DMN_Handle process;
   DMN_Handle thread;
   DMN_Handle module;
+  
+  // rjf: general event properties
   Arch arch;
   U64 address;
   U64 size;
   String8 string;
-  U32 code; // code gives pid & tid on CreateProcess and CreateThread (respectfully)
+  U32 code;  // code -> exception code (signo on Linux), pid/tid
   U32 flags; // DMN_TrapFlags, if `DMN_EventKind_SetBreakpoint`
-  S32 signo;
-  S32 sigcode;
-  Rng1U64 elf_phdr_vrange;
-  U64 elf_phdr_entsize;
   U64 instruction_pointer;
   U64 stack_pointer;
   U64 user_data;
   B32 exception_repeated;
-  U64 tls_index;
-  U64 tls_offset;
+  
+  // rjf: process info
   DMN_TlsModel tls_model;
+  
+  // rjf: module info
+  DMN_ModuleInfo *module_info;
 };
 
 typedef struct DMN_EventNode DMN_EventNode;
@@ -181,6 +220,11 @@ struct DMN_ProcessInfo
   U32 pid;
 };
 
+////////////////////////////////
+//~ rjf: Globals
+
+read_only global DMN_ModuleInfo dmn_module_info_nil = {0};
+
 ////////////////////////////////
 //~ rjf: Basic Type Functions (Helpers, Implemented Once)
 
@@ -247,7 +291,6 @@ internal U64 dmn_process_read(DMN_Handle process, Rng1U64 range, void *dst);
 internal B32 dmn_process_write(DMN_Handle process, Rng1U64 range, void *src);
 
 //- rjf: threads
-internal Arch dmn_arch_from_thread(DMN_Handle handle);
 internal U64 dmn_stack_base_vaddr_from_thread(DMN_Handle handle);
 internal U64 dmn_tls_root_vaddr_from_thread(DMN_Handle handle);
 internal B32 dmn_thread_read_reg_block(DMN_Handle handle, void *reg_block);

src/demon/demon_core.mdesk

@@ -13,6 +13,7 @@ DMN_EventKindTable:
   {ExitThread}
   {LoadModule}
   {UnloadModule}
+  {ModuleDebugInfo}
   {Breakpoint}
   {Trap}
   {SingleStep}

src/demon/generated/demon.meta.c

@@ -4,7 +4,7 @@
 //- GENERATED CODE
 
 C_LINKAGE_BEGIN
-String8 dmn_event_kind_string_table[21] =
+String8 dmn_event_kind_string_table[22] =
 {
 str8_lit_comp("Null"),
 str8_lit_comp("Error"),
@@ -15,6 +15,7 @@ str8_lit_comp("CreateThread"),
 str8_lit_comp("ExitThread"),
 str8_lit_comp("LoadModule"),
 str8_lit_comp("UnloadModule"),
+str8_lit_comp("ModuleDebugInfo"),
 str8_lit_comp("Breakpoint"),
 str8_lit_comp("Trap"),
 str8_lit_comp("SingleStep"),

src/demon/generated/demon.meta.h

@@ -17,6 +17,7 @@ DMN_EventKind_CreateThread,
 DMN_EventKind_ExitThread,
 DMN_EventKind_LoadModule,
 DMN_EventKind_UnloadModule,
+DMN_EventKind_ModuleDebugInfo,
 DMN_EventKind_Breakpoint,
 DMN_EventKind_Trap,
 DMN_EventKind_SingleStep,
@@ -62,7 +63,7 @@ DMN_ExceptionKind_COUNT,
 } DMN_ExceptionKind;
 
 C_LINKAGE_BEGIN
-extern String8 dmn_event_kind_string_table[21];
+extern String8 dmn_event_kind_string_table[22];
 extern String8 dmn_exception_kind_string_table[5];
 
 C_LINKAGE_END