From 27cd7a21a3ee8ff2d4f7adc6e16591fd49130abe Mon Sep 17 00:00:00 2001
From: Nikita Smith <git.nikita.smith@gmail.com>
Date: Sun, 3 Nov 2024 23:43:27 -0800
Subject: [PATCH] coff section definition for big obj

---
 src/coff/coff.c | 18 ++++++++++--------
 src/coff/coff.h |  6 ++++--
 2 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/src/coff/coff.c b/src/coff/coff.c
index d94c0785..12c83dd1 100644
--- a/src/coff/coff.c
+++ b/src/coff/coff.c
@@ -97,15 +97,17 @@ coff_header_info_from_data(String8 data)
   COFF_HeaderInfo info = {0};
   if (coff_is_big_obj(data)) {
     COFF_HeaderBigObj *big_header = (COFF_HeaderBigObj*)data.str;
-    info.machine               = big_header->machine;
-    info.section_array_off     = sizeof(COFF_HeaderBigObj);
-    info.section_count_no_null = big_header->section_count;
-    info.string_table_off      = big_header->pointer_to_symbol_table + sizeof(COFF_Symbol32) * big_header->number_of_symbols;
-    info.symbol_size           = sizeof(COFF_Symbol32);
-    info.symbol_off            = big_header->pointer_to_symbol_table;
-    info.symbol_count          = big_header->number_of_symbols;
+    info.type                     = COFF_DataType_BIG_OBJ;
+    info.machine                  = big_header->machine;
+    info.section_array_off        = sizeof(COFF_HeaderBigObj);
+    info.section_count_no_null    = big_header->section_count;
+    info.string_table_off         = big_header->pointer_to_symbol_table + sizeof(COFF_Symbol32) * big_header->number_of_symbols;
+    info.symbol_size              = sizeof(COFF_Symbol32);
+    info.symbol_off               = big_header->pointer_to_symbol_table;
+    info.symbol_count             = big_header->number_of_symbols;
   } else if (coff_is_obj(data)) {
-    COFF_Header *header = (COFF_Header*)data.str;
+    COFF_Header *header        = (COFF_Header*)data.str;
+    info.type                  = COFF_DataType_OBJ;
     info.machine               = header->machine;
     info.section_array_off     = sizeof(COFF_Header);
     info.section_count_no_null = header->section_count;
diff --git a/src/coff/coff.h b/src/coff/coff.h
index 92728f16..f36cd63b 100644
--- a/src/coff/coff.h
+++ b/src/coff/coff.h
@@ -522,9 +522,10 @@ typedef struct COFF_SymbolSecDef
   U16 number_of_relocations;
   U16 number_of_ln;
   U32 check_sum;
-  U16 number; // one-based section index
+  U16 number_lo; // one-based section index
   U8 selection;
-  U8 unused[3];
+  U8 unused;
+  U16 number_hi;
 } COFF_SymbolSecDef;
 
 // specifies how section data should be modified when placed in the image file.
@@ -682,6 +683,7 @@ typedef U32 COFF_DataType;
 typedef struct COFF_HeaderInfo
 {
   COFF_MachineType machine;
+  COFF_DataType type;
   U64 section_array_off;
   U64 section_count_no_null;
   U64 string_table_off;