From 52f11023c80d9b0116246c5c9f1a279361276710 Mon Sep 17 00:00:00 2001
From: Max Wash <mbswash@gmail.com>
Date: Mon, 9 Dec 2024 13:28:58 +0000
Subject: [PATCH] common: add instruction and opcode definitions; interface for
 manipulating selectors

---
 common/include/ivy/opcode.h   | 97 +++++++++++++++++++++++++++++++++++
 common/include/ivy/selector.h | 23 +++++++++
 common/selector.c             |  0
 3 files changed, 120 insertions(+)
 create mode 100644 common/include/ivy/opcode.h
 create mode 100644 common/include/ivy/selector.h
 create mode 100644 common/selector.c

diff --git a/common/include/ivy/opcode.h b/common/include/ivy/opcode.h
new file mode 100644
index 0000000..fec7415
--- /dev/null
+++ b/common/include/ivy/opcode.h
@@ -0,0 +1,97 @@
+#ifndef IVY_OPCODE_H_
+#define IVY_OPCODE_H_
+
+enum ivy_instr_id {
+	IVY_INSTR_NONE = 0,
+	IVY_INSTR_LDR,
+	IVY_INSTR_STR,
+	IVY_INSTR_PUSH,
+	IVY_INSTR_POP,
+	IVY_INSTR_MSG,
+	IVY_INSTR_ADD,
+	IVY_INSTR_SUB,
+	IVY_INSTR_MUL,
+	IVY_INSTR_DIV,
+	IVY_INSTR_CMP,
+	IVY_INSTR_C_EQ,
+	IVY_INSTR_C_NE,
+	IVY_INSTR_C_LT,
+	IVY_INSTR_C_LE,
+	IVY_INSTR_C_GT,
+	IVY_INSTR_C_GE,
+	IVY_INSTR_BR,
+	IVY_INSTR_B_Z,
+	IVY_INSTR_B_NZ,
+	IVY_INSTR_B_EQ,
+	IVY_INSTR_B_NE,
+	IVY_INSTR_B_LT,
+	IVY_INSTR_B_LE,
+	IVY_INSTR_B_GT,
+	IVY_INSTR_B_GE,
+	IVY_INSTR_OB_C,
+	IVY_INSTR_OB_E,
+	IVY_INSTR_LAM_C,
+	IVY_INSTR_IT_G,
+	IVY_INSTR_IT_N,
+	IVY_INSTR_IT_V,
+	IVY_INSTR_RET,
+	IVY_INSTR_RET_N,
+};
+
+enum ivy_opcode {
+	IVY_OP_NONE = 0,
+
+	IVY_OP_LDR_SP,
+	IVY_OP_LDR_BP,
+	IVY_OP_LDR_SELF,
+	IVY_OP_LDR_IMM,
+	IVY_OP_LDR_POOL,
+
+	IVY_OP_STR_SP,
+	IVY_OP_STR_BP,
+	IVY_OP_STR_SELF,
+
+	IVY_OP_PUSH,
+	IVY_OP_POP,
+
+	IVY_OP_MSG_R,
+	IVY_OP_MSG_I,
+
+	IVY_OP_ADD,
+	IVY_OP_SUB,
+	IVY_OP_MUL,
+	IVY_OP_DIV,
+
+	IVY_OP_CMP,
+
+	IVY_OP_C_EQ,
+	IVY_OP_C_NE,
+	IVY_OP_C_LT,
+	IVY_OP_C_LE,
+	IVY_OP_C_GT,
+	IVY_OP_C_GE,
+
+	IVY_OP_BR,
+	IVY_OP_B_Z,
+	IVY_OP_B_NZ,
+	IVY_OP_B_EQ,
+	IVY_OP_B_NE,
+	IVY_OP_B_LT,
+	IVY_OP_B_LE,
+	IVY_OP_B_GT,
+	IVY_OP_B_GE,
+
+	IVY_OP_OB_C,
+	IVY_OP_OB_E,
+
+	IVY_OP_LAM_C,
+
+	IVY_OP_IT_G,
+	IVY_OP_IT_N,
+	IVY_OP_IT_V,
+
+	IVY_OP_RET,
+	IVY_OP_RET_N,
+};
+
+#endif
diff --git a/common/include/ivy/selector.h b/common/include/ivy/selector.h
new file mode 100644
index 0000000..d307c54
--- /dev/null
+++ b/common/include/ivy/selector.h
@@ -0,0 +1,23 @@
+#ifndef IVY_SELECTOR_H_
+#define IVY_SELECTOR_H_
+
+#include <ivy/status.h>
+
+enum ivy_selector_recipient {
+	IVY_SEL_NONE = 0,
+	IVY_SEL_CLASS,
+	IVY_SEL_OBJECT,
+};
+
+struct ivy_selector;
+
+extern enum ivy_status ivy_selector_create(struct ivy_selector **sel);
+extern void ivy_selector_destroy(struct ivy_selector *sel);
+
+extern void ivy_selector_set_recipient(
+	struct ivy_selector *sel, enum ivy_selector_recipient r);
+extern void ivy_selector_set_name(struct ivy_selector *sel, const char *name);
+extern void ivy_selector_add_arg(
+	struct ivy_selector *sel, const char *label, const char *name);
+
+#endif
diff --git a/common/selector.c b/common/selector.c
new file mode 100644
index 0000000..e69de29