oreodave/ovm
Archived
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

DUP implementation is now part of WORD_ROUTINES

Browse Source 
As PUSH_REGISTER and MOV have the same signature of taking a word as
input, DUP may as well be part of it.

This leads to a larger discussion about how signatures of functions
matter: I may need to do a cleanup at some point.
This commit is contained in:
Aryadev Chavali
2023-11-01 21:14:04 +00:00
parent a5afaee3d0
commit 4e64f1fe23
2 changed files with 12 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
vm/runtime.c
View File

@@ -68,10 +68,11 @@ err_t vm_execute(vm_t *vm)
return PUSH_ROUTINES[instruction.opcode](vm, instruction.operand);
}
else if (OPCODE_IS_TYPE(instruction.opcode, OP_MOV) ||
OPCODE_IS_TYPE(instruction.opcode, OP_PUSH_REGISTER))
OPCODE_IS_TYPE(instruction.opcode, OP_PUSH_REGISTER) ||
OPCODE_IS_TYPE(instruction.opcode, OP_DUP))
{
prog->ptr++;
return REG_ROUTINES[instruction.opcode](vm, instruction.operand.as_byte);
return WORD_ROUTINES[instruction.opcode](vm, instruction.operand.as_word);
}
else if (OPCODE_IS_TYPE(instruction.opcode, OP_POP))
{
@@ -94,11 +95,6 @@ err_t vm_execute(vm_t *vm)
}
return ERR_OK;
}
else if (OPCODE_IS_TYPE(instruction.opcode, OP_DUP))
{
prog->ptr++;
return DUP_ROUTINES[instruction.opcode](vm, instruction.operand.as_word);
}
else if (OPCODE_IS_TYPE(instruction.opcode, OP_NOT) ||
OPCODE_IS_TYPE(instruction.opcode, OP_OR) ||
OPCODE_IS_TYPE(instruction.opcode, OP_AND) ||

21
vm/runtime.h
View File

@@ -96,26 +96,23 @@ err_t vm_mov_byte(vm_t *, word);
err_t vm_mov_hword(vm_t *, word);
err_t vm_mov_word(vm_t *, word);
typedef err_t (*reg_f)(vm_t *, word);
static const reg_f REG_ROUTINES[] = {
err_t vm_dup_byte(vm_t *, word);
err_t vm_dup_hword(vm_t *, word);
err_t vm_dup_word(vm_t *, word);
typedef err_t (*word_f)(vm_t *, word);
static const word_f WORD_ROUTINES[] = {
[OP_PUSH_REGISTER_BYTE] = vm_push_byte_register,
[OP_PUSH_REGISTER_HWORD] = vm_push_hword_register,
[OP_PUSH_REGISTER_WORD] = vm_push_word_register,
[OP_MOV_BYTE] = vm_mov_byte,
[OP_MOV_HWORD] = vm_mov_hword,
[OP_MOV_WORD] = vm_mov_word,
[OP_DUP_BYTE] = vm_dup_byte,
[OP_DUP_HWORD] = vm_dup_hword,
[OP_DUP_WORD] = vm_dup_word,
};
err_t vm_dup_byte(vm_t *, word);
err_t vm_dup_hword(vm_t *, word);
err_t vm_dup_word(vm_t *, word);
typedef err_t (*dup_f)(vm_t *, word);
static const dup_f DUP_ROUTINES[] = {
[OP_DUP_BYTE] = vm_dup_byte,
[OP_DUP_HWORD] = vm_dup_hword,
[OP_DUP_WORD] = vm_dup_word,
};
err_t vm_not_byte(vm_t *);
err_t vm_not_hword(vm_t *);