48 lines
1.2 KiB
Rust
48 lines
1.2 KiB
Rust
use ferris_boi::{cpu::Processor, register};
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macro_rules! assert_flags_eq {
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($processor: expr, $(($flag: path, $value: expr)),+ $(,)?) => {
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$(
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assert_eq!(
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$value,
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$processor.registers.get_flag_bit($flag),
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"{:?} flag had unexpected value",
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$flag
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);
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)+
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};
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}
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pub(crate) use assert_flags_eq;
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pub fn set_opposite_of_expected_flags(
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processor: &mut Processor,
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(zero_flag, sub_flag, half_carry_flag, carry_flag): (u8, u8, u8, u8),
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) {
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let invert_flag = |value| {
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if value == 0 {
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1
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} else if value == 1 {
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0
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} else {
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panic!("invalid flag value of {value} ")
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}
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};
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processor
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.registers
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.set_flag_bit(register::Flag::Zero, invert_flag(zero_flag));
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processor
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.registers
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.set_flag_bit(register::Flag::HalfCarry, invert_flag(half_carry_flag));
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processor
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.registers
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.set_flag_bit(register::Flag::Carry, invert_flag(carry_flag));
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processor
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.registers
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.set_flag_bit(register::Flag::Subtract, invert_flag(sub_flag));
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}
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