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Switched from floats to halfword

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Registers are now just words, with pushing from and moving to
registers with specified subtypes just pushing those types into the
word registers.  That means there are 8 word registers which can act
as 16 half word registers, which themselves can act as 64 byte
registers.
This commit is contained in:
Aryadev Chavali
2023-10-21 22:57:43 +01:00
parent 266b4e4572
commit dcedb70a5c
5 changed files with 201 additions and 229 deletions
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54
src/inst.h
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@@ -23,41 +23,29 @@ typedef enum
{
OP_NOOP = 0,
// 0b0001
OP_PUSH_BYTE = 0b00000001,
OP_PUSH_WORD = 0b00000011,
OP_PUSH_FLOAT = 0b00000101,
// 0b0010
OP_PUSH_BYTE_REGISTER = 0b00000010,
OP_PUSH_WORD_REGISTER = 0b00000110,
OP_PUSH_FLOAT_REGISTER = 0b00001010,
// 0b0100
OP_POP_BYTE = 0b00000100,
OP_POP_WORD = 0b00001100,
OP_POP_FLOAT = 0b00010100,
// 0b1000
OP_MOV_BYTE = 0b00001000,
OP_MOV_WORD = 0b00011000,
OP_MOV_FLOAT = 0b00101000,
OP_PUSH_BYTE,
OP_PUSH_HWORD,
OP_PUSH_WORD,
OP_HALT = 0b10000000, // top of the byte is a HALT
OP_PUSH_REGISTER_BYTE,
OP_PUSH_REGISTER_HWORD,
OP_PUSH_REGISTER_WORD,
OP_POP_BYTE,
OP_POP_HWORD,
OP_POP_WORD,
OP_MOV_BYTE,
OP_MOV_HWORD,
OP_MOV_WORD,
OP_HALT = 0b11111111, // top of the byte is a HALT
} opcode_t;
const char *opcode_as_cstr(opcode_t);
// Masks and values to check if an opcode is of a type
typedef enum
{
OP_TYPE_PUSH = 0b00000001,
OP_TYPE_PUSH_REGISTER = 0b00000010,
OP_TYPE_POP = 0b00000100,
OP_TYPE_MOV = 0b00001000,
OP_TYPE_HALT = 0b10000000,
} opcode_type_t;
const char *opcode_type_as_cstr(opcode_type_t);
#define OPCODE_IS_TYPE(OPCODE, OP_TYPE) (((OPCODE) & (OP_TYPE)) == (OP_TYPE))
#define OPCODE_IS_TYPE(OPCODE, OP_TYPE) \
(((OPCODE) >= OP_TYPE##_BYTE) && ((OPCODE) <= OP_TYPE##_WORD))
typedef struct
{
@@ -96,12 +84,12 @@ inst_t inst_read_bytecode(darr_t *);
#define INST_FPOP ((inst_t){.opcode = OP_POP_FLOAT})
#define INST_BPUSH_REG(REG) \
((inst_t){.opcode = OP_PUSH_BYTE_REGISTER, .operand = DBYTE(REG)})
((inst_t){.opcode = OP_PUSH_REGISTER_BYTE, .operand = DBYTE(REG)})
#define INST_WPUSH_REG(REG) \
((inst_t){.opcode = OP_PUSH_WORD_REGISTER, .operand = DBYTE(REG)})
((inst_t){.opcode = OP_PUSH_REGISTER_WORD, .operand = DBYTE(REG)})
#define INST_FPUSH_REG(REG) \
((inst_t){.opcode = OP_PUSH_FLOAT_REGISTER, .operand = DBYTE(REG)})
((inst_t){.opcode = OP_PUSH_REGISTER_FLOAT, .operand = DBYTE(REG)})
#endif