From ecdee57c60550b63094741261a14c1f088c740ee Mon Sep 17 00:00:00 2001
From: Nikita Smith <git.nikita.smith@gmail.com>
Date: Mon, 9 Jun 2025 16:58:51 -0700
Subject: [PATCH] move helpers to COFF layer

---
 src/coff/coff.c | 29 +++++++++++++++++++++++++++++
 src/coff/coff.h |  2 ++
 2 files changed, 31 insertions(+)

diff --git a/src/coff/coff.c b/src/coff/coff.c
index b63f9d2b..5b42d057 100644
--- a/src/coff/coff.c
+++ b/src/coff/coff.c
@@ -337,6 +337,35 @@ coff_make_import_header(Arena            *arena,
   return import_data;
 }
 
+internal U8
+coff_code_align_byte_from_machine(COFF_MachineType machine)
+{
+  U8 align_byte = 0;
+  switch (machine) {
+  case COFF_MachineType_Unknown: break;
+  case COFF_MachineType_X64:
+  case COFF_MachineType_X86: {
+    align_byte = 0xCC;
+  } break;
+  default: { NotImplemented; } break;
+  }
+  return align_byte;
+}
+
+internal U16
+coff_default_align_from_machine(COFF_MachineType machine)
+{
+  U16 align = 0;
+  switch (machine) {
+  case COFF_MachineType_Unknown: break;
+  case COFF_MachineType_X64: {
+    align = 16;
+  } break;
+  default: { NotImplemented; } break;
+  }
+  return align;
+}
+
 internal U64
 coff_word_size_from_machine(COFF_MachineType machine)
 {
diff --git a/src/coff/coff.h b/src/coff/coff.h
index 2a6ca456..afbd9a2e 100644
--- a/src/coff/coff.h
+++ b/src/coff/coff.h
@@ -617,6 +617,8 @@ internal String8 coff_make_import_header(Arena *arena, COFF_MachineType machine,
 ////////////////////////////////
 // Misc
 
+internal U16 coff_default_align_from_machine   (COFF_MachineType machine);
+internal U8  coff_code_align_byte_from_machine (COFF_MachineType machine);
 internal U64 coff_word_size_from_machine       (COFF_MachineType machine);
 internal U64 coff_default_exe_base_from_machine(COFF_MachineType machine);
 internal U64 coff_default_dll_base_from_machine(COFF_MachineType machine);