Struct Gte 

pub struct Gte { /* private fields */ }

Full GTE state. Field grouping matches the PSX register map: vectors / FIFOs / accumulators in data-prefixed fields, matrices and translations in ctrl-prefixed fields. The MFC2/MTC2 paths pack and unpack these into 32-bit views.

Implementations

impl Gte

pub fn command_cycles(instr: u32) -> u32

Real-hardware cycle latency of the GTE command encoded in instr (the bottom six bits select the function), or 0 for encodings that decode as nops. Lets a CPU model charge the latency it stalls on when a GTE result register is read before the op completes.

pub fn new() -> Self

Construct a freshly-reset GTE – all registers cleared. Real hardware powers on with garbage, but the BIOS zeroes the lot before first use, so we save a redundant write by starting clean.

pub fn profile_snapshot(&self) -> GteProfileSnapshot

Current monotonic GTE diagnostic counters.

pub fn read_data(&self, idx: u8) -> u32

MFC2 view of data register idx. Mirrors what the CPU sees on mfc2 rt, $rd.

pub fn write_data(&mut self, idx: u8, value: u32)

MTC2 view of data register idx.

pub fn read_control(&self, idx: u8) -> u32

CFC2 view of control register idx.

pub fn write_control(&mut self, idx: u8, value: u32)

CTC2 view of control register idx.

pub fn execute_with_stale_v0x(&mut self, instr: u32, stale_x: i16)

Execute one COP2 function with the HWB-010 MTC2-commit hazard injected: the first transform row reading V0 sees stale_x as V0.x (the value held before the in-flight MTC2 VXY0 write), while later rows see the fresh register. Silicon-measured: six exact arithmetic confirmations across two live hardware captures, HWB-009 and HWB-010.

pub fn execute_op_with_stale_ir3(&mut self, instr: u32, stale_ir3: i16)

Execute OP with an MTC2 IR3 value still committing during its first sequential MAC row. MAC1 sees stale_ir3; MAC2/MAC3 see current IR3.

pub fn execute(&mut self, instr: u32)

Execute one COP2 function. instr is the full 32-bit instruction word so we can pull sf/lm/mx/vx/cv. Unrecognised commands return without updating state – real hardware decodes them as nops, which matches what we observe in PCSX-Redux’s interpreter.

Trait Implementations

impl Default for Gte

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Gte

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Gte

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.