programmerjake/cpu
1
0
Fork 0
forked from libre-chip/cpu
Code Pull requests Activity

decode fixed-point compare instructions

Browse source
This commit is contained in:
Jacob Lifshay 2026-01-18 16:37:00 -08:00
parent a4b052f5f3
commit 3a35a698e2
Signed by: programmerjake
SSH key fingerprint: SHA256:HnFTLGpSm4Q4Fj502oCFisjZSoakwEuTsJJMSke63RQ
6 changed files with 3730 additions and 1532 deletions
Download patch file Download diff file Expand all files Collapse all files

179
crates/cpu/tests/simple_power_isa_decoder.rs
View file

@ -3,7 +3,9 @@
use cpu::{
decoder::simple_power_isa::decode_one_insn,
instruction::{AddSubMOp, MOp, MOpDestReg, MOpRegNum, OutputIntegerMode},
instruction::{
AddSubMOp, CompareMOp, CompareMode, MOp, MOpDestReg, MOpRegNum, OutputIntegerMode,
},
util::array_vec::ArrayVec,
};
use fayalite::{prelude::*, sim::vcd::VcdWriterDecls, util::RcWriter};
@ -486,6 +488,181 @@ fn test_cases() -> Vec<TestCase> {
false,
),
));
retval.push(insn_single(
"cmpi 3, 0, 4, 0x1234",
0x2d841234,
None,
CompareMOp::compare_i(
MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
[MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value],
0x1234.cast_to_static::<SInt<_>>(),
#[hdl(sim)]
OutputIntegerMode::Full64(),
#[hdl(sim)]
CompareMode::S32(),
),
));
retval.push(insn_single(
"cmpi 3, 1, 4, -0x7655",
0x2da489ab,
None,
CompareMOp::compare_i(
MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
[MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value],
(0x89abu16 as i16).cast_to_static::<SInt<_>>(),
#[hdl(sim)]
OutputIntegerMode::Full64(),
#[hdl(sim)]
CompareMode::S64(),
),
));
retval.push(insn_single(
"cmp 3, 0, 4, 5",
0x7d842800,
None,
CompareMOp::compare(
MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
[
MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value,
MOpRegNum::power_isa_gpr_reg(5_hdl_u5).value,
],
0.cast_to_static::<SInt<_>>(),
#[hdl(sim)]
OutputIntegerMode::Full64(),
#[hdl(sim)]
CompareMode::S32(),
),
));
retval.push(insn_single(
"cmp 3, 1, 4, 5",
0x7da42800,
None,
CompareMOp::compare(
MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
[
MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value,
MOpRegNum::power_isa_gpr_reg(5_hdl_u5).value,
],
0.cast_to_static::<SInt<_>>(),
#[hdl(sim)]
OutputIntegerMode::Full64(),
#[hdl(sim)]
CompareMode::S64(),
),
));
retval.push(insn_single(
"cmpli 3, 0, 4, 0x1234",
0x29841234,
None,
CompareMOp::compare_i(
MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
[MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value],
0x1234.cast_to_static::<SInt<_>>(),
#[hdl(sim)]
OutputIntegerMode::Full64(),
#[hdl(sim)]
CompareMode::U32(),
),
));
retval.push(insn_single(
"cmpli 3, 1, 4, 0x89ab",
0x29a489ab,
None,
CompareMOp::compare_i(
MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
[MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value],
0x89ab.cast_to_static::<SInt<_>>(),
#[hdl(sim)]
OutputIntegerMode::Full64(),
#[hdl(sim)]
CompareMode::U64(),
),
));
retval.push(insn_single(
"cmpl 3, 0, 4, 5",
0x7d842840,
None,
CompareMOp::compare(
MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
[
MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value,
MOpRegNum::power_isa_gpr_reg(5_hdl_u5).value,
],
0.cast_to_static::<SInt<_>>(),
#[hdl(sim)]
OutputIntegerMode::Full64(),
#[hdl(sim)]
CompareMode::U32(),
),
));
retval.push(insn_single(
"cmpl 3, 1, 4, 5",
0x7da42840,
None,
CompareMOp::compare(
MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
[
MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value,
MOpRegNum::power_isa_gpr_reg(5_hdl_u5).value,
],
0.cast_to_static::<SInt<_>>(),
#[hdl(sim)]
OutputIntegerMode::Full64(),
#[hdl(sim)]
CompareMode::U64(),
),
));
retval.push(insn_single(
"cmprb 3, 0, 4, 5",
0x7d842980,
None,
CompareMOp::compare(
MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
[
MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value,
MOpRegNum::power_isa_gpr_reg(5_hdl_u5).value,
],
0.cast_to_static::<SInt<_>>(),
#[hdl(sim)]
OutputIntegerMode::Full64(),
#[hdl(sim)]
CompareMode::CmpRBOne(),
),
));
retval.push(insn_single(
"cmprb 3, 1, 4, 5",
0x7da42980,
None,
CompareMOp::compare(
MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
[
MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value,
MOpRegNum::power_isa_gpr_reg(5_hdl_u5).value,
],
0.cast_to_static::<SInt<_>>(),
#[hdl(sim)]
OutputIntegerMode::Full64(),
#[hdl(sim)]
CompareMode::CmpRBTwo(),
),
));
retval.push(insn_single(
"cmpeqb 3, 4, 5",
0x7d8429c0,
None,
CompareMOp::compare(
MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
[
MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value,
MOpRegNum::power_isa_gpr_reg(5_hdl_u5).value,
],
0.cast_to_static::<SInt<_>>(),
#[hdl(sim)]
OutputIntegerMode::Full64(),
#[hdl(sim)]
CompareMode::CmpEqB(),
),
));
retval
}