#include "opcodes.h"
#include "hash.h"
#include "optable.h"

OpcodeInfo opcodeTable[NOF_OPCODES] = {
	{ "mov",	OPCODE_MOV_MASK,			2 },
	{ "or",		OPCODE_OR,				2 },
	{ "and",	OPCODE_AND,				2 },
	{ "sub",	OPCODE_SUB,				2 },
	{ "add",	OPCODE_ADD,				2 },
	{ "cmp",	OPCODE_CMP,				2 },
	{ "jmp",	OPCODE_JMP | OPCODE_JMP_JMP,		1 },
	{ "je",		OPCODE_JMP | OPCODE_JMP_JE,		1 },
	{ "jne",	OPCODE_JMP | OPCODE_JMP_JNE,		1 },	
	{ "ja",		OPCODE_JMP | OPCODE_JMP_JA,		1 },	
	{ "jae",	OPCODE_JMP | OPCODE_JMP_JAE,		1 },	
	{ "jb",		OPCODE_JMP | OPCODE_JMP_JB,		1 },	
	{ "jbe",	OPCODE_JMP | OPCODE_JMP_JBE,		1 },	
	{ "jsr",	OPCODE_JMP | OPCODE_JMP_JSR,		1 },	
	{ "not",	OPCODE_NOT,				1 },
	{ "push",	OPCODE_STACK | OPCODE_STACK_PUSH,	1 },
	{ "pop",	OPCODE_STACK | OPCODE_STACK_POP,	1 },
	{ "nop",	OPCODE_NOP,				0 },
	{ "hlt",	OPCODE_HLT,				0 },
	{ "ret",	OPCODE_RET,				0 }
};

intHashTable opcode_ht;

void opcode_table_init( )
{
	int i;
	
	inthash_init( &opcode_ht, NOF_OPCODES );

	for( i = 0; i < NOF_OPCODES; i++ ) {
		inthash_set( &opcode_ht, opcodeTable[i].mnemonic, i );
	}
}

void opcode_table_done( )
{
	inthash_done( &opcode_ht );
}

OpcodeInfo *lookup_opcode( char *mnemonic )
{
	int idx;
	
	idx = inthash_get( &opcode_ht, mnemonic );
	if( idx >= 0 ) {
		return &opcodeTable[idx];
	}
	
	return 0;
}