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Add test for the bug fixed on e2a1303

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Former-commit-id: 98d0789aaf92a549cbe1b387461fd9acd4d773c0
This commit is contained in:
Michel Heily 2019-07-04 02:06:41 +03:00
parent 702a08e30c
commit 2293300260
1 changed files with 28 additions and 0 deletions
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28
src/arm7tdmi/arm/mod.rs
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@ -442,6 +442,8 @@ impl ArmInstruction {
/// All instructions constants were generated using an ARM assembler.
mod tests {
use super::*;
use crate::arm7tdmi::*;
use crate::sysbus::BoxedMemory;
#[test]
fn test_decode_swi() {
@ -523,4 +525,30 @@ mod tests {
assert_eq!(format!("{}", decoded), "strteq\tr2, [r4], -r7, asr #8");
}
#[test]
fn str_pre_index() {
// str r4, [sp, 0x10]
let decoded = ArmInstruction::decode(0xe58d4010, 0).unwrap();
assert_eq!(decoded.fmt, ArmFormat::LDR_STR);
assert_eq!(decoded.cond, ArmCond::Always);
let mut core = Core::new();
core.set_reg(4, 0x12345678);
core.set_reg(REG_SP, 0);
let bytes = vec![
/* 0: */ 0xaa, 0xbb, 0xcc, 0xdd,
/* 4: */ 0xaa, 0xbb, 0xcc, 0xdd,
/* 8: */ 0xaa, 0xbb, 0xcc, 0xdd,
/* c: */ 0xaa, 0xbb, 0xcc, 0xdd,
/* 10: */ 0xaa, 0xbb, 0xcc, 0xdd,
];
let mut mem = BoxedMemory::new(bytes.into_boxed_slice());
assert_ne!(mem.read_32(core.get_reg(REG_SP) + 0x10), 0x12345678);
assert_eq!(core.exec_arm(&mut mem, decoded), Ok(CpuPipelineAction::IncPC));
assert_eq!(mem.read_32(core.get_reg(REG_SP) + 0x10), 0x12345678);
}
}