board/sg-reader.c: Streamline further

Remove remaining pointless boilerplate, turn it into a free-
standing hook, since its aimeio.dll dependency forces it to be a
singleton anyway.

idzhook/_com10.c

@@ -1,38 +0,0 @@
-#include <windows.h>
-
-#include <assert.h>
-#include <stdint.h>
-
-#include "board/sg-reader.h"
-
-#include "hook/iohook.h"
-
-#include "idzhook/_com10.h"
-
-static HRESULT com10_handle_irp(struct irp *irp);
-
-static struct sg_reader com10_reader;
-
-HRESULT com10_hook_init(void)
-{
-    HRESULT hr;
-
-    hr = sg_reader_init(&com10_reader, 10);
-
-    if (FAILED(hr)) {
-        return hr;
-    }
-
-    return iohook_push_handler(com10_handle_irp);
-}
-
-static HRESULT com10_handle_irp(struct irp *irp)
-{
-    assert(irp != NULL);
-
-    if (!sg_reader_match_irp(&com10_reader, irp)) {
-        return iohook_invoke_next(irp);
-    }
-
-    return sg_reader_handle_irp(&com10_reader, irp);
-}

idzhook/_com10.h

@@ -1,5 +0,0 @@
-#pragma once
-
-#include <windows.h>
-
-HRESULT com10_hook_init(void);

idzhook/dllmain.c

@@ -9,11 +9,12 @@
 #include "amex/jvs.h"
 #include "amex/sram.h"
 
+#include "board/sg-reader.h"
+
 #include "hook/process.h"
 
 #include "hooklib/serial.h"
 
-#include "idzhook/_com10.h"
 #include "idzhook/jvs.h"
 
 #include "platform/hwmon.h"
@@ -50,8 +51,8 @@ static DWORD CALLBACK idz_pre_startup(void)
 
     /* Initialize Initial D Zero I/O board emulation */
 
-    com10_hook_init();
     idz_jvs_init();
+    sg_reader_hook_init(10);
 
     /* Initialize debug helpers */
 

idzhook/meson.build

@@ -19,7 +19,6 @@ shared_library(
         util_lib,
     ],
     sources : [
-        '_com10.c',
         'dllmain.c',
         'jvs.c',
         'jvs.h',