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Implemented lexer and parser for new memory management instructions

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This commit is contained in:
Aryadev Chavali
2023-11-01 21:39:48 +00:00
parent 32c1bcb859
commit 7564938113
3 changed files with 45 additions and 1 deletions
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30
asm/lexer.c
View File

@@ -42,6 +42,14 @@ const char *token_type_as_cstr(token_type_t type)
return "MOV";
case TOKEN_DUP:
return "DUP";
case TOKEN_MALLOC:
return "MALLOC";
case TOKEN_MSET:
return "MSET";
case TOKEN_MGET:
return "MGET";
case TOKEN_MDELETE:
return "MDELETE";
case TOKEN_NOT:
return "NOT";
case TOKEN_OR:
@@ -117,7 +125,7 @@ bool is_valid_hex_char(char c)
token_t tokenise_symbol(buffer_t *buffer, size_t *column)
{
static_assert(NUMBER_OF_OPCODES == 73, "tokenise_buffer: Out of date!");
static_assert(NUMBER_OF_OPCODES == 83, "tokenise_buffer: Out of date!");
size_t sym_size = 0;
for (; sym_size < space_left(buffer) &&
@@ -168,6 +176,26 @@ token_t tokenise_symbol(buffer_t *buffer, size_t *column)
offset = 3;
type = TOKEN_DUP;
}
else if (sym_size >= 6 && strncmp(opcode, "MALLOC", 6) == 0)
{
offset = 6;
type = TOKEN_MALLOC;
}
else if (sym_size >= 4 && strncmp(opcode, "MSET", 4) == 0)
{
offset = 4;
type = TOKEN_MSET;
}
else if (sym_size >= 4 && strncmp(opcode, "MGET", 4) == 0)
{
offset = 4;
type = TOKEN_MGET;
}
else if (sym_size >= 7 && strncmp(opcode, "MDELETE", 7) == 0)
{
offset = 7;
type = TOKEN_MDELETE;
}
else if (sym_size >= 3 && strncmp(opcode, "NOT", 3) == 0)
{
offset = 3;

4
asm/lexer.h
View File

@@ -26,6 +26,10 @@ typedef enum TokenType
TOKEN_PUSH_REG,
TOKEN_MOV,
TOKEN_DUP,
TOKEN_MALLOC,
TOKEN_MSET,
TOKEN_MGET,
TOKEN_MDELETE,
TOKEN_NOT,
TOKEN_OR,
TOKEN_AND,

12
asm/parser.c
View File

@@ -221,6 +221,18 @@ perr_t parse_next_inst(token_stream_t *stream, inst_t *ret)
case TOKEN_DUP:
ret->opcode = OP_DUP_BYTE;
return parse_utype_inst_with_operand(stream, ret);
case TOKEN_MALLOC:
ret->opcode = OP_MALLOC_BYTE;
return parse_utype_inst_with_operand(stream, ret);
case TOKEN_MSET:
ret->opcode = OP_MSET_BYTE;
return parse_utype_inst_with_operand(stream, ret);
case TOKEN_MGET:
ret->opcode = OP_MGET_BYTE;
return parse_utype_inst_with_operand(stream, ret);
case TOKEN_MDELETE:
ret->opcode = OP_MDELETE;
break;
case TOKEN_NOT:
ret->opcode = OP_NOT_BYTE;
return parse_utype_inst(stream, ret);