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Fix arithmetic assignment instructions

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The assigned value is pushed to the stack.
This commit is contained in:
Nunuhara Cabbage
2019-10-15 21:51:47 -07:00
parent 12242c087f
commit 503ec4cdb1
1 changed files with 13 additions and 10 deletions
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vm.c
+13 -10
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@@ -573,43 +573,43 @@ static void execute_instruction(int16_t opcode)
// +=, -=, etc.
case PLUSA:
v = stack_pop().i;
stack_pop_ref()[0].i += v;
stack_push(stack_pop_ref()[0].i += v);
break;
case MINUSA:
v = stack_pop().i;
stack_pop_ref()[0].i -= v;
stack_push(stack_pop_ref()[0].i -= v);
break;
case MULA:
v = stack_pop().i;
stack_pop_ref()[0].i *= v;
stack_push(stack_pop_ref()[0].i *= v);
break;
case DIVA:
v = stack_pop().i;
stack_pop_ref()[0].i /= v;
stack_push(stack_pop_ref()[0].i /= v);
break;
case MODA:
v = stack_pop().i;
stack_pop_ref()[0].i %= v;
stack_push(stack_pop_ref()[0].i %= v);
break;
case ANDA:
v = stack_pop().i;
stack_pop_ref()[0].i &= v;
stack_push(stack_pop_ref()[0].i &= v);
break;
case ORA:
v = stack_pop().i;
stack_pop_ref()[0].i |= v;
stack_push(stack_pop_ref()[0].i |= v);
break;
case XORA:
v = stack_pop().i;
stack_pop_ref()[0].i ^= v;
stack_push(stack_pop_ref()[0].i ^= v);
break;
case LSHIFTA:
v = stack_pop().i;
stack_pop_ref()[0].i <<= v;
stack_push(stack_pop_ref()[0].i <<= v);
break;
case RSHIFTA:
v = stack_pop().i;
stack_pop_ref()[0].i >>= v;
stack_push(stack_pop_ref()[0].i >>= v);
break;
case INC:
stack_pop_ref()[0].i++;
@@ -617,6 +617,9 @@ static void execute_instruction(int16_t opcode)
case DEC:
stack_pop_ref()[0].i--;
break;
case ITOB:
stack_set(0, !!stack_peek(0).i);
break;
//
// --- Floating Point Arithmetic ---
//