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Added instructions for allocating, setting, getting and deleting heap memory

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One may allocate any number of (bytes|hwords|words), set or get some
index from allocated memory, and delete heap memory.

The idea is that all the relevant datums will be on the stack, so no
register usage.  This means no instructions should use register space
at all (other than POP, which I'm debating about currently).  Register
space is purely for users.
This commit is contained in:
Aryadev Chavali
2023-11-01 21:15:13 +00:00
parent 4e64f1fe23
commit eda49755bc
2 changed files with 71 additions and 12 deletions
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20
lib/inst.h
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@@ -44,6 +44,18 @@ typedef enum
OP_DUP_HWORD,
OP_DUP_WORD,
// Dealing with the heap
OP_MALLOC_BYTE,
OP_MALLOC_HWORD,
OP_MALLOC_WORD,
OP_MSET_BYTE,
OP_MSET_HWORD,
OP_MSET_WORD,
OP_MGET_BYTE,
OP_MGET_HWORD,
OP_MGET_WORD,
OP_MDELETE,
// Boolean operations
OP_NOT_BYTE,
OP_NOT_HWORD,
@@ -170,6 +182,14 @@ inst_t *insts_read_bytecode_file(FILE *, size_t *);
#define INST_DUP(TYPE, OP) \
((inst_t){.opcode = OP_DUP_##TYPE, .operand = DWORD(OP)})
#define INST_MALLOC(TYPE, OP) \
((inst_t){.opcode = OP_MALLOC_##TYPE, .operand = DWORD(OP)})
#define INST_MSET(TYPE, OP) \
((inst_t){.opcode = OP_MSET_##TYPE, .operand = DWORD(OP)})
#define INST_MGET(TYPE, OP) \
((inst_t){.opcode = OP_MGET_##TYPE, .operand = DWORD(OP)})
#define INST_MDELETE ((inst_t){.opcode = OP_MDELETE})
#define INST_NOT(TYPE) ((inst_t){.opcode = OP_NOT_##TYPE})
#define INST_OR(TYPE) ((inst_t){.opcode = OP_OR_##TYPE})
#define INST_AND(TYPE) ((inst_t){.opcode = OP_AND_##TYPE})