From 1962aabdf5d5aa69e52afdeead360ccb4c0c9a49 Mon Sep 17 00:00:00 2001
From: Aryadev Chavali <aryadev@aryadevchavali.com>
Date: Sun, 22 Oct 2023 22:00:44 +0100
Subject: Added OP_PLUS_*

Takes two operands from the stack then pushes their sum.
---
 src/inst.c | 17 +++++++++++++----
 src/inst.h | 14 ++++++++++----
 2 files changed, 23 insertions(+), 8 deletions(-)

(limited to 'src')

diff --git a/src/inst.c b/src/inst.c
index 59ca795..23bf48f 100644
--- a/src/inst.c
+++ b/src/inst.c
@@ -114,6 +114,15 @@ const char *opcode_as_cstr(opcode_t code)
   case OP_EQ_WORD:
     return "EQ_WORD";
     break;
+  case OP_PLUS_BYTE:
+    return "PLUS_BYTE";
+    break;
+  case OP_PLUS_HWORD:
+    return "PLUS_HWORD";
+    break;
+  case OP_PLUS_WORD:
+    return "PLUS_WORD";
+    break;
   case OP_JUMP_ABS:
     return "JUMP_ABS";
     break;
@@ -191,7 +200,7 @@ data_type_t get_opcode_data_type(opcode_t opcode)
 
 void inst_print(inst_t instruction, FILE *fp)
 {
-  static_assert(NUMBER_OF_OPCODES == 34, "inst_bytecode_size: Out of date");
+  static_assert(NUMBER_OF_OPCODES == 37, "inst_bytecode_size: Out of date");
   fprintf(fp, "%s(", opcode_as_cstr(instruction.opcode));
   if (OPCODE_IS_TYPE(instruction.opcode, OP_PUSH))
   {
@@ -220,7 +229,7 @@ void inst_print(inst_t instruction, FILE *fp)
 
 size_t inst_bytecode_size(inst_t inst)
 {
-  static_assert(NUMBER_OF_OPCODES == 34, "inst_bytecode_size: Out of date");
+  static_assert(NUMBER_OF_OPCODES == 37, "inst_bytecode_size: Out of date");
   size_t size = 1; // for opcode
   if (OPCODE_IS_TYPE(inst.opcode, OP_PUSH))
   {
@@ -245,7 +254,7 @@ size_t inst_bytecode_size(inst_t inst)
 
 void inst_write_bytecode(inst_t inst, darr_t *darr)
 {
-  static_assert(NUMBER_OF_OPCODES == 34, "inst_write_bytecode: Out of date");
+  static_assert(NUMBER_OF_OPCODES == 37, "inst_write_bytecode: Out of date");
   // Append opcode
   darr_append_byte(darr, inst.opcode);
   // Then append 0 or more operands
@@ -318,7 +327,7 @@ data_t read_type_from_darr(darr_t *darr, data_type_t type)
 
 inst_t inst_read_bytecode(darr_t *darr)
 {
-  static_assert(NUMBER_OF_OPCODES == 34, "inst_read_bytecode: Out of date");
+  static_assert(NUMBER_OF_OPCODES == 37, "inst_read_bytecode: Out of date");
   if (darr->used >= darr->available)
     return (inst_t){0};
   inst_t inst     = {0};
diff --git a/src/inst.h b/src/inst.h
index 487a41b..e10d744 100644
--- a/src/inst.h
+++ b/src/inst.h
@@ -28,14 +28,14 @@ typedef enum
   OP_PUSH_HWORD,
   OP_PUSH_WORD,
 
-  OP_PUSH_REGISTER_BYTE,
-  OP_PUSH_REGISTER_HWORD,
-  OP_PUSH_REGISTER_WORD,
-
   OP_POP_BYTE,
   OP_POP_HWORD,
   OP_POP_WORD,
 
+  OP_PUSH_REGISTER_BYTE,
+  OP_PUSH_REGISTER_HWORD,
+  OP_PUSH_REGISTER_WORD,
+
   OP_MOV_BYTE,
   OP_MOV_HWORD,
   OP_MOV_WORD,
@@ -66,6 +66,10 @@ typedef enum
   OP_EQ_WORD,
 
   // Mathematical operations
+  OP_PLUS_BYTE,
+  OP_PLUS_HWORD,
+  OP_PLUS_WORD,
+
   // Program control flow
   OP_JUMP_ABS,
   OP_JUMP_STACK,
@@ -129,6 +133,8 @@ inst_t *insts_read_bytecode_file(FILE *, size_t *);
 #define INST_XOR(TYPE) ((inst_t){.opcode = OP_XOR_##TYPE})
 #define INST_EQ(TYPE)  ((inst_t){.opcode = OP_EQ_##TYPE})
 
+#define INST_PLUS(TYPE) ((inst_t){.opcode = OP_PLUS_##TYPE})
+
 #define INST_JUMP_ABS(OP) \
   ((inst_t){.opcode = OP_JUMP_ABS, .operand = DWORD(OP)})
 #define INST_JUMP_STACK    ((inst_t){.opcode = OP_JUMP_STACK})
-- 
cgit v1.2.3-13-gbd6f