Add keybind lookup code

Also centralise NEXT_INSN macro, into its own header at least for now.

1 files changed, 37 insertions, 0 deletions

diff --git a/src/x86util.h b/src/x86util.h
new file mode 100644
index 0000000..0ae89ae
--- /dev/null
+++ b/src/x86util.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright © 2022 Michael Smith <mikesmiffy128@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef INC_X86UTIL_H
+#define INC_X86UTIL_H
+
+#include <stdbool.h>
+
+#include "errmsg.h"
+#include "x86.h"
+
+// XXX: don't know where else to put this, or how else to design this, so this
+// is very much a plonk-it-here-for-now scenario.
+
+#define NEXT_INSN(p, tgt) do { \
+	int _len = x86_len(p); \
+	if (_len == -1) { \
+		errmsg_errorx("unknown or invalid instruction looking for %s", tgt); \
+		return false; \
+	} \
+	(p) += _len; \
+} while (0)
+
+#endif