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emu: Fake opcode ASSERT for testing

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This commit is contained in:
Jared Burce
2021-03-12 22:19:25 -08:00
parent 0c55ff9b36
commit 04348a816e
2 changed files with 12 additions and 2 deletions
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6
src/emu/i8088.rs
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@@ -298,8 +298,10 @@ impl i8088 {
0x2e => nop[seg=cs, prefix] / 2,
0x36 => nop[seg=ss, prefix] / 2,
0x3e => nop[seg=ds, prefix] / 2,
0x60 => show[cpu] / 0, // Fake opcode for debugging
0x61 => peek[seg=ds, addr] / 0, // Fake opcode for debugging
0x60 => show[cpu] / 0, // Fake opcode for debugging
0x61 => peek[seg=ds, addr] / 0, // Fake opcode for debugging
0x62 _ => assert[modrm8, d8] / 0, // Fake opcode for debugging
0x63 _ => assert[modrm16, d16] / 0, // Fake opcode for debugging
0x88 _ => mov[modrm8, r8] / "2/13+",
0x89 _ => mov[modrm16, r16] / "2/13+",
0x8A _ => mov[r8, modrm8] / "2/12+",

8
src/emu/operations.rs
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@@ -1,3 +1,5 @@
use std::fmt::Debug;
use emu::byteorder::{ByteOrder, LittleEndian};
use emu::dos;
use emu::i8088::i8088;
@@ -5,6 +7,12 @@ use emu::operands::{Addr, Address, LValue, Reg, RValue};
use emu::pc::Bus;
use emu::util::segoff_to_addr;
pub fn assert<T: Debug + Eq>(loc: &impl RValue<T>, val: &impl RValue<T>) {
assert_eq!(loc.read(), val.read(),
"ASSERT instruction failed: {:#2X?} != {:#2X?}", loc.read(), val.read());
println!("ASSERT pass: {:#2X?} == {:#2X?}", loc.read(), val.read());
}
pub fn show(cpu: &mut i8088) {
println!("{:#X?}", cpu);
}