render wip

1 files changed, 46 insertions, 0 deletions

diff --git a/dwm/inter.h b/dwm/inter.h
new file mode 100644
index 0000000..d668eaa
--- /dev/null
+++ b/dwm/inter.h
@@ -0,0 +1,46 @@
+#pragma once
+#include "typedef.h"
+#include "util.h"
+
+class VMT {
+  U64 ptr;
+
+public:
+  VMT( U64 ptr ) : ptr( ptr ) {}
+
+  U64 get( U32 index ) {
+    return *(U64*)( ptr + index * sizeof( U64 ) );
+  }
+
+  U64 set( U32 index, U64 func ) {
+    U64 o = get( index );
+    *(U64*)( ptr + index * sizeof( U64 ) ) = func;
+  
+    return o;
+  }
+};
+
+static U64 u_find_pattern( U64 module, const char* pattern, U64 start = 0 ) {
+  U32 len;
+  U8* sig_bytes = u_parse_signature( pattern, &len );
+
+  if( !sig_bytes || len <= 2 )
+    return 0;
+
+  IMAGE_DOS_HEADER   dos_hdr;
+  IMAGE_NT_HEADERS64 nt_hdr;
+  U32                size;
+
+  dos_hdr = *(IMAGE_DOS_HEADER*)module;
+  nt_hdr  = *(IMAGE_NT_HEADERS64*)( module + dos_hdr.e_lfanew );
+  size    = nt_hdr.OptionalHeader.SizeOfImage;
+
+  for( U64 off = start - module; off < size; ++off ) {
+    if( u_binary_match( (U8*)( module + off ), sig_bytes, len ) ) {
+      free( sig_bytes );
+      return module + off;
+    }
+  }
+
+  return 0;
+}
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