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Added and implemented OP_JUMP_ABS

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Jumps to the operand given, interpreted as a word, an absolute
address.
This commit is contained in:
Aryadev Chavali
2023-10-22 20:40:42 +01:00
parent bc0e0fce25
commit fffad9aea3
3 changed files with 26 additions and 9 deletions
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7
src/runtime.c
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@@ -19,7 +19,7 @@
void vm_execute(vm_t *vm)
{
static_assert(NUMBER_OF_OPCODES == 31, "vm_execute: Out of date");
static_assert(NUMBER_OF_OPCODES == 32, "vm_execute: Out of date");
struct Program *prog = &vm->program;
if (prog->ptr >= prog->max)
// TODO: Error (Went past end of program)
@@ -110,6 +110,11 @@ void vm_execute(vm_t *vm)
vm_peek(vm, OPCODE_DATA_TYPE(instruction.opcode, OP_EQ)).as_word;
prog->ptr++;
}
else if (instruction.opcode == OP_JUMP_ABS)
{
// Set prog->ptr to the jump point requested
prog->ptr = instruction.operand.as_word;
}
else if (instruction.opcode == OP_HALT)
{
// Do nothing here. Should be caught by callers of vm_execute