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Introduced a new mathematical operator MULT

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Thankfully multiplication, like addition, is the same under 2s
complement as it is for unsigned numbers.  So I just need to implement
those versions to be fine.
This commit is contained in:
Aryadev Chavali
2023-11-01 18:08:11 +00:00
parent c244e7c4a4
commit 4be04d2518
2 changed files with 17 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
lib/inst.c
View File

@@ -194,6 +194,14 @@ const char *opcode_as_cstr(opcode_t code)
break; break;
case OP_PLUS_WORD: case OP_PLUS_WORD:
return "PLUS_WORD"; return "PLUS_WORD";
case OP_MULT_BYTE:
return "MULT_BYTE";
break;
case OP_MULT_HWORD:
return "MULT_HWORD";
break;
case OP_MULT_WORD:
return "MULT_WORD";
break; break;
case OP_JUMP_ABS: case OP_JUMP_ABS:
return "JUMP_ABS"; return "JUMP_ABS";
@@ -261,7 +269,7 @@ void data_print(data_t datum, data_type_t type, FILE *fp)
void inst_print(inst_t instruction, FILE *fp) void inst_print(inst_t instruction, FILE *fp)
{ {
static_assert(NUMBER_OF_OPCODES == 70, "inst_bytecode_size: Out of date"); static_assert(NUMBER_OF_OPCODES == 73, "inst_bytecode_size: Out of date");
fprintf(fp, "%s(", opcode_as_cstr(instruction.opcode)); fprintf(fp, "%s(", opcode_as_cstr(instruction.opcode));
if (OPCODE_IS_TYPE(instruction.opcode, OP_PUSH)) if (OPCODE_IS_TYPE(instruction.opcode, OP_PUSH))
{ {
@@ -291,7 +299,7 @@ void inst_print(inst_t instruction, FILE *fp)
size_t inst_bytecode_size(inst_t inst) size_t inst_bytecode_size(inst_t inst)
{ {
static_assert(NUMBER_OF_OPCODES == 70, "inst_bytecode_size: Out of date"); static_assert(NUMBER_OF_OPCODES == 73, "inst_bytecode_size: Out of date");
size_t size = 1; // for opcode size_t size = 1; // for opcode
if (OPCODE_IS_TYPE(inst.opcode, OP_PUSH)) if (OPCODE_IS_TYPE(inst.opcode, OP_PUSH))
{ {
@@ -315,7 +323,7 @@ size_t inst_bytecode_size(inst_t inst)
void inst_write_bytecode(inst_t inst, darr_t *darr) void inst_write_bytecode(inst_t inst, darr_t *darr)
{ {
static_assert(NUMBER_OF_OPCODES == 70, "inst_write_bytecode: Out of date"); static_assert(NUMBER_OF_OPCODES == 73, "inst_write_bytecode: Out of date");
// Append opcode // Append opcode
darr_append_byte(darr, inst.opcode); darr_append_byte(darr, inst.opcode);
// Then append 0 or more operands // Then append 0 or more operands
@@ -388,7 +396,7 @@ data_t read_type_from_darr(darr_t *darr, data_type_t type)
inst_t inst_read_bytecode(darr_t *darr) inst_t inst_read_bytecode(darr_t *darr)
{ {
static_assert(NUMBER_OF_OPCODES == 70, "inst_read_bytecode: Out of date"); static_assert(NUMBER_OF_OPCODES == 73, "inst_read_bytecode: Out of date");
if (darr->used >= darr->available) if (darr->used >= darr->available)
return (inst_t){0}; return (inst_t){0};
inst_t inst = {0}; inst_t inst = {0};

5
lib/inst.h
View File

@@ -98,6 +98,10 @@ typedef enum
OP_PLUS_HWORD, OP_PLUS_HWORD,
OP_PLUS_WORD, OP_PLUS_WORD,
OP_MULT_BYTE,
OP_MULT_HWORD,
OP_MULT_WORD,
// Simple I/O // Simple I/O
OP_PRINT_BYTE, OP_PRINT_BYTE,
OP_PRINT_CHAR, OP_PRINT_CHAR,
@@ -176,6 +180,7 @@ inst_t *insts_read_bytecode_file(FILE *, size_t *);
#define INST_GT(TYPE) ((inst_t){.opcode = OP_GT_##TYPE}) #define INST_GT(TYPE) ((inst_t){.opcode = OP_GT_##TYPE})
#define INST_GTE(TYPE) ((inst_t){.opcode = OP_GTE_##TYPE}) #define INST_GTE(TYPE) ((inst_t){.opcode = OP_GTE_##TYPE})
#define INST_PLUS(TYPE) ((inst_t){.opcode = OP_PLUS_##TYPE}) #define INST_PLUS(TYPE) ((inst_t){.opcode = OP_PLUS_##TYPE})
#define INST_MULT(TYPE) ((inst_t){.opcode = OP_MULT_##TYPE})
#define INST_JUMP_ABS(OP) \ #define INST_JUMP_ABS(OP) \
((inst_t){.opcode = OP_JUMP_ABS, .operand = DWORD(OP)}) ((inst_t){.opcode = OP_JUMP_ABS, .operand = DWORD(OP)})