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basic float arith, wip float trig, abs

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This commit is contained in:
MightyPork
2020-10-17 23:58:24 +02:00
parent e560fc5657
commit 68c9b33637
10 changed files with 521 additions and 36 deletions
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crsn_arith/src/defs.rs
+40 -14
View File
@@ -27,8 +27,10 @@ pub enum ArithOp {
SignExtend { dst: Wr, src: Rd, mask: BitMask },
Add { dst: Wr, a: Rd, b: Rd },
Abs { dst: Wr, a: Rd },
Sub { dst: Wr, a: Rd, b: Rd },
Mul { dst: Wr, a: Rd, b: Rd },
Pow { dst: Wr, a: Rd, pow: Rd },
Div { dst: Wr, rem: Wr, a: Rd, div: Rd },
// "Mod" is functionally equivalent to "Div" with the result discarded,
// but status flags are updated by the remainder
@@ -46,18 +48,42 @@ pub enum ArithOp {
Lsr { dst: Wr, a: Rd, n: Rd },
Asr { dst: Wr, a: Rd, n: Rd },
// IntToFloat { dst: Wr, a: Rd },
// FloatToInt { dst: Wr, a: Rd },
// FloatTest { a: Rd },
// FloatCompare { a: Rd, b: Rd },
// FloatRangeTest { val: Rd, a: Rd, b: Rd },
// FloatRng { dst: Wr, min: Rd, max: Rd },
// FloatRound { dst: Wr, a: Rd, b: Rd },
// FloatCeil { dst: Wr, a: Rd, b: Rd },
// FloatFloor { dst: Wr, a: Rd, b: Rd },
// FloatAdd { dst: Wr, a: Rd, b: Rd },
// FloatSub { dst: Wr, a: Rd, b: Rd },
// FloatMul { dst: Wr, a: Rd, b: Rd },
// FloatDiv { dst: Wr, rem: Wr, a: Rd, div: Rd },
// FloatMod { dst: Wr, a: Rd, div: Rd },
IntToFloat { dst: Wr, a: Rd },
FloatToInt { dst: Wr, a: Rd, mode: FloatToIntMode },
FloatTest { a: Rd },
FloatCompare { a: Rd, b: Rd },
FloatRangeTest { val: Rd, a: Rd, b: Rd },
FloatRng { dst: Wr, min: Rd, max: Rd },
FloatAdd { dst: Wr, a: Rd, b: Rd },
FloatSub { dst: Wr, a: Rd, b: Rd },
FloatMul { dst: Wr, a: Rd, b: Rd },
FloatPow { dst: Wr, a: Rd, pow: Rd },
FloatRoot { dst: Wr, a: Rd, root: Rd },
FloatHyp { dst: Wr, a: Rd, b: Rd },
FloatDiv { dst: Wr, rem: Wr, a: Rd, div: Rd },
FloatMod { dst: Wr, a: Rd, div: Rd },
FloatAbs { dst: Wr, a: Rd },
FloatSin { dst: Wr, f: Rd },
FloatAsin { dst: Wr, a: Rd },
FloatCos { dst: Wr, f: Rd },
FloatAcos { dst: Wr, a: Rd },
FloatTan { dst: Wr, f: Rd },
FloatAtan { dst: Wr, a: Rd },
FloatAtan2 { dst: Wr, y: Rd, x: Rd },
FloatCot { dst: Wr, f: Rd },
FloatAcot { dst: Wr, a: Rd },
}
#[derive(Debug, Clone, Copy, Eq, PartialEq)]
pub enum FloatToIntMode {
Floor,
Ceil,
Round,
}
impl Default for FloatToIntMode {
fn default() -> Self {
Self::Round
}
}
crsn_arith/src/exec.rs
+180 -5
View File
@@ -10,14 +10,35 @@ use crsn::sexp;
use crsn::sexp::Sexp;
use crsn::utils::A;
use crate::defs::ArithOp;
use crate::defs::{ArithOp, FloatToIntMode};
use crsn::asm::instr::cond::Flag;
use rand::Rng;
#[inline]
fn f2u(f: f64) -> u64 {
unsafe { std::mem::transmute(f) }
}
#[inline]
fn u2f(f: u64) -> f64 {
unsafe { std::mem::transmute(f) }
}
#[inline]
fn i2u(f: i64) -> u64 {
unsafe { std::mem::transmute(f) }
}
#[inline]
fn u2i(f: u64) -> i64 {
unsafe { std::mem::transmute(f) }
}
impl OpTrait for ArithOp {
fn execute(&self, _ti: &ThreadInfo, state: &mut RunState) -> Result<EvalRes, Fault> {
let eres = EvalRes::default();
match self {
// Integers
ArithOp::Test { a } => {
state.clear_status();
let res = state.read(a)?;
@@ -142,6 +163,122 @@ impl OpTrait for ArithOp {
state.write(dst, remainder)?;
}
}
// Floating point
ArithOp::FloatToInt { dst, a, mode } => {
state.clear_status();
let val : f64 = u2f(state.read(a)?);
let res = i2u(match mode {
FloatToIntMode::Floor => val.floor(),
FloatToIntMode::Ceil => val.ceil(),
FloatToIntMode::Round => val.round(),
} as i64);
state.update_status(res);
state.write(dst, res)?;
}
ArithOp::IntToFloat { dst, a } => {
state.clear_status();
let val : f64 = u2i(state.read(a)?) as f64;
state.update_status_float(val);
state.write(dst, f2u(val))?;
}
ArithOp::FloatTest { a } => {
state.clear_status();
let res = u2f(state.read(a)?);
state.update_status_float(res);
}
ArithOp::FloatCompare { a, b } => {
state.clear_status();
let x = u2f(state.read(a)?);
let y = u2f(state.read(b)?);
state.set_flag(Flag::Equal, x == y);
state.set_flag(Flag::Lower, x < y);
state.set_flag(Flag::Greater, x > y);
// Test flags are set when both arguments have the property
if x == y {
state.update_status_float(x);
}
}
ArithOp::FloatRangeTest { val, a, b } => {
state.clear_status();
let val = u2f(state.read(val)?);
let a = u2f(state.read(a)?);
let b = u2f(state.read(b)?);
state.set_flag(Flag::Equal, val >= a && val <= b);
state.set_flag(Flag::Lower, val < a);
state.set_flag(Flag::Greater, val > b);
state.update_status_float(val);
}
ArithOp::FloatRng { dst, min, max } => {
state.clear_status();
let min = u2f(state.read(min)?);
let max = u2f(state.read(max)?);
let val = if min == max {
min
} else if min > max {
state.set_flag(Flag::Invalid, true);
min
} else {
rand::thread_rng()
.gen_range(min, max)
};
state.write(dst, f2u(val))?;
state.update_status_float(val);
}
ArithOp::FloatAdd { dst, a, b } => {
state.clear_status();
let x = u2f(state.read(a)?);
let y = u2f(state.read(b)?);
let res = x + y;
state.update_status_float(res);
state.write(dst, f2u(res))?;
}
ArithOp::FloatSub { dst, a, b } => {
state.clear_status();
let x = u2f(state.read(a)?);
let y = u2f(state.read(b)?);
let res = x - y;
state.update_status_float(res);
state.write(dst, f2u(res))?;
}
ArithOp::FloatMul { dst, a, b } => {
state.clear_status();
let x = u2f(state.read(a)?);
let y = u2f(state.read(b)?);
let res = x * y;
state.update_status_float(res);
state.write(dst, f2u(res))?;
}
ArithOp::FloatDiv { dst, rem, a, div } => {
state.clear_status();
let x = u2f(state.read(a)?);
let d = u2f(state.read(div)?);
if d == 0.0 {
state.set_flag(Flag::Invalid, true);
} else {
let res = x / d;
let remainder = x % d;
state.update_status_float(res);
state.write(dst, f2u(res))?;
state.write(rem, f2u(remainder))?;
}
}
ArithOp::FloatMod { dst, a, div } => {
state.clear_status();
let x = u2f(state.read(a)?);
let d = u2f(state.read(div)?);
if d == 0.0 {
state.set_flag(Flag::Invalid, true);
} else {
let rem = x % d;
state.update_status_float(rem);
state.write(dst, f2u(rem))?;
}
}
// Bitwise
ArithOp::And { dst, a, b } => {
state.clear_status();
let x = state.read(a)?;
@@ -282,6 +419,8 @@ impl OpTrait for ArithOp {
state.update_status(res);
state.write(dst, res)?;
}
_ => unimplemented!() // TODO implement float trig etc
}
Ok(eres)
@@ -289,19 +428,19 @@ impl OpTrait for ArithOp {
fn to_sexp(&self) -> Sexp {
match self {
ArithOp::Add { dst, a, b } => to_sexp_2_or_3("add", dst, a, b),
ArithOp::Test { a } => sexp::list(&[A("test"), A(a)]),
ArithOp::Test { a } => sexp::list(&[A("tst"), A(a)]),
ArithOp::Compare { a, b } => sexp::list(&[A("cmp"), A(a), A(b)]),
ArithOp::RangeTest { val, a: start, b: end } => sexp::list(&[A("rcmp"), A(val), A(start), A(end)]),
ArithOp::Rng { dst, min, max } => {
if min.is_immediate_equal(0) && max.is_immediate_equal(u64::MAX) {
if min.is_imm_equal(0) && max.is_imm_equal(u64::MAX) {
sexp::list(&[A("rng"), A(dst)])
} else if min.is_immediate_equal(0) {
} else if min.is_imm_equal(0) {
sexp::list(&[A("rng"), A(dst), A(max)])
} else {
sexp::list(&[A("rng"), A(dst), A(min), A(max)])
}
}
ArithOp::Add { dst, a, b } => to_sexp_2_or_3("add", dst, a, b),
ArithOp::Sub { dst, a, b } => to_sexp_2_or_3("sub", dst, a, b),
ArithOp::Mul { dst, a, b } => to_sexp_2_or_3("mul", dst, a, b),
ArithOp::Div { dst, rem, a, div } => {
@@ -316,6 +455,40 @@ impl OpTrait for ArithOp {
}
}
ArithOp::Mod { dst, a, div } => to_sexp_2_or_3("mod", dst, a, div),
// TODO render as float
ArithOp::FloatTest { a } => sexp::list(&[A("tstf"), A(a)]),
ArithOp::FloatCompare { a, b } => sexp::list(&[A("cmpf"), A(a), A(b)]),
ArithOp::FloatRangeTest { val, a: start, b: end } => sexp::list(&[A("rcmpf"), A(val), A(start), A(end)]),
ArithOp::FloatRng { dst, min, max } => {
if min.is_imm_equal(0f64.to_bits()) && max.is_imm_equal(f64::MAX.to_bits()) {
sexp::list(&[A("rngf"), A(dst)])
} else if min.is_imm_equal(0) {
sexp::list(&[A("rngf"), A(dst), A(max)])
} else {
sexp::list(&[A("rngf"), A(dst), A(min), A(max)])
}
}
ArithOp::FloatAdd { dst, a, b } => to_sexp_2_or_3("addf", dst, a, b),
ArithOp::FloatSub { dst, a, b } => to_sexp_2_or_3("subf", dst, a, b),
ArithOp::FloatMul { dst, a, b } => to_sexp_2_or_3("mulf", dst, a, b),
ArithOp::FloatDiv { dst, rem, a, div } => {
if rem.is_discard() {
to_sexp_2_or_3("divf", dst, a, div)
} else {
if &dst.as_rd() == a {
sexp::list(&[A("divrf"), A(dst), A(rem), A(div)])
} else {
sexp::list(&[A("divrf"), A(dst), A(rem), A(a), A(div)])
}
}
}
ArithOp::FloatMod { dst, a, div } => to_sexp_2_or_3("modf", dst, a, div),
ArithOp::IntToFloat { dst, a } => to_sexp_1_or_2("itf", dst, a),
ArithOp::FloatToInt { dst, a, mode: FloatToIntMode::Floor } => to_sexp_1_or_2("ftif", dst, a),
ArithOp::FloatToInt { dst, a, mode: FloatToIntMode::Round } => to_sexp_1_or_2("ftir", dst, a),
ArithOp::FloatToInt { dst, a, mode: FloatToIntMode::Ceil } => to_sexp_1_or_2("ftic", dst, a),
ArithOp::And { dst, a, b } => to_sexp_2_or_3("and", dst, a, b),
ArithOp::Or { dst, a, b } => to_sexp_2_or_3("or", dst, a, b),
ArithOp::Xor { dst, a, b } => to_sexp_2_or_3("xor", dst, a, b),
@@ -333,6 +506,8 @@ impl OpTrait for ArithOp {
ArithOp::Clz { dst, src, mask: slice } => to_sexp_1_or_2(&format!("clz{}", slice), dst, src),
ArithOp::Clo { dst, src, mask: slice } => to_sexp_1_or_2(&format!("clo{}", slice), dst, src),
ArithOp::SignExtend { dst, src, mask: slice } => to_sexp_1_or_2(&format!("se{}", slice), dst, src),
_ => unimplemented!() // FIXME
}
}
}
crsn_arith/src/parse.rs
+261 -8
View File
@@ -4,9 +4,7 @@ use crsn::asm::instr::op::OpKind;
use crsn::asm::parse::arg_parser::TokenParser;
use crsn::module::ParseRes;
use crsn::sexp::SourcePosition;
use crate::defs::ArithOp;
use crate::defs::{ArithOp, FloatToIntMode};
pub(crate) fn parse<'a>(op_pos: &SourcePosition, keyword: &str, mut args: TokenParser<'a>) -> Result<ParseRes<'a, OpKind>, CrsnError> {
Ok(ParseRes::ext(match keyword {
@@ -33,14 +31,14 @@ pub(crate) fn parse<'a>(op_pos: &SourcePosition, keyword: &str, mut args: TokenP
1 => {
ArithOp::Rng {
dst: args.next_wr()?,
min: Rd::immediate(0),
max: Rd::immediate(u64::MAX),
min: Rd::new_imm(0),
max: Rd::new_imm(u64::MAX),
}
}
2 => {
ArithOp::Rng {
dst: args.next_wr()?,
min: Rd::immediate(0),
min: Rd::new_imm(0),
max: args.next_rd()?,
}
}
@@ -61,12 +59,12 @@ pub(crate) fn parse<'a>(op_pos: &SourcePosition, keyword: &str, mut args: TokenP
"inc" => {
let (dst, a) = args.parse_wr_rd()?;
ArithOp::Add { dst, a, b: Rd::immediate(1) }
ArithOp::Add { dst, a, b: Rd::new_imm(1) }
}
"dec" => {
let (dst, a) = args.parse_wr_rd()?;
ArithOp::Sub { dst, a, b: Rd::immediate(1) }
ArithOp::Sub { dst, a, b: Rd::new_imm(1) }
}
"add" => {
@@ -74,6 +72,11 @@ pub(crate) fn parse<'a>(op_pos: &SourcePosition, keyword: &str, mut args: TokenP
ArithOp::Add { dst, a, b }
}
"abs" => {
let (dst, a) = args.parse_wr_rd()?;
ArithOp::Abs { dst, a }
}
"sub" => {
let (dst, a, b) = args.parse_wr_rd_rd()?;
ArithOp::Sub { dst, a, b }
@@ -84,6 +87,11 @@ pub(crate) fn parse<'a>(op_pos: &SourcePosition, keyword: &str, mut args: TokenP
ArithOp::Mul { dst, a, b }
}
"pow" => {
let (dst, a, pow) = args.parse_wr_rd_rd()?;
ArithOp::Pow { dst, a, pow }
}
"divr" => {
match args.len() {
3 => {
@@ -191,6 +199,251 @@ pub(crate) fn parse<'a>(op_pos: &SourcePosition, keyword: &str, mut args: TokenP
ArithOp::Rbit { dst, src }
}
"cmpf" => {
let parsed = ArithOp::FloatCompare {
a: args.next_rd()?.imm_to_float(),
b: args.next_rd()?.imm_to_float(),
};
args.ensure_empty("two input arguments")?;
parsed
}
"frcmp" => {
let parsed = ArithOp::FloatRangeTest {
val: args.next_rd()?.imm_to_float(),
a: args.next_rd()?.imm_to_float(),
b: args.next_rd()?.imm_to_float(),
};
args.ensure_empty("3 arguments (value, min, max)")?;
parsed
}
"ftst" => {
let arg = args.next_rd()?;
args.ensure_empty("1 input argument")?;
ArithOp::FloatTest { a: arg.imm_to_float() }
}
"frng" => {
let parsed = match args.len() {
1 => {
ArithOp::FloatRng {
dst: args.next_wr()?,
min: Rd::new_float(0.0),
max: Rd::new_float(f64::MAX),
}
}
2 => {
ArithOp::FloatRng {
dst: args.next_wr()?,
min: Rd::new_float(0.0),
max: args.next_rd()?.imm_to_float(),
}
}
3 => {
ArithOp::FloatRng {
dst: args.next_wr()?,
min: args.next_rd()?.imm_to_float(),
max: args.next_rd()?.imm_to_float(),
}
}
_ => {
return Err(CrsnError::Parse("Rng requires 1, 2 or 3 arguments".into(), op_pos.clone()));
}
};
args.ensure_empty("1 (dst) or 3 (dst, min, max) arguments")?;
parsed
}
"fadd" => {
let (dst, a, b) = args.parse_wr_rd_rd()?;
ArithOp::FloatAdd {
dst,
a: a.imm_to_float(),
b: b.imm_to_float(),
}
}
"fsub" => {
let (dst, a, b) = args.parse_wr_rd_rd()?;
ArithOp::FloatSub {
dst,
a: a.imm_to_float(),
b: b.imm_to_float(),
}
}
"fmul" => {
let (dst, a, b) = args.parse_wr_rd_rd()?;
ArithOp::FloatMul {
dst,
a: a.imm_to_float(),
b: b.imm_to_float(),
}
}
"fpow" => {
let (dst, a, pow) = args.parse_wr_rd_rd()?;
ArithOp::FloatPow {
dst,
a: a.imm_to_float(),
pow: pow.imm_to_float()
}
}
"froot" => {
let (dst, a, root) = args.parse_wr_rd_rd()?;
ArithOp::FloatRoot {
dst,
a: a.imm_to_float(),
root: root.imm_to_float()
}
}
"fhyp" => {
let (dst, a, b) = args.parse_wr_rd_rd()?;
ArithOp::FloatHyp {
dst,
a: a.imm_to_float(),
b: a.imm_to_float(),
}
}
"fdiv" => {
let (dst, a, div) = args.parse_wr_rd_rd()?;
ArithOp::FloatDiv {
dst,
rem: Wr::discard(),
a: a.imm_to_float(),
div: div.imm_to_float(),
}
}
"fdivr" => {
match args.len() {
3 => {
let dst = args.next_rdwr()?;
let rem = args.next_wr()?;
let div = args.next_rd()?;
ArithOp::FloatDiv {
dst: dst.wr(),
rem,
a: dst.rd().imm_to_float(),
div: div.imm_to_float(),
}
}
4 => {
ArithOp::FloatDiv {
dst: args.next_wr()?,
rem: args.next_wr()?,
a: args.next_rd()?.imm_to_float(),
div: args.next_rd()?.imm_to_float(),
}
}
_ => {
return Err(CrsnError::Parse("DivRF requires 3 or 4 arguments".into(), op_pos.clone()));
}
}
}
"fmod" => {
let (dst, a, div) = args.parse_wr_rd_rd()?;
ArithOp::FloatMod {
dst,
a: a.imm_to_float(),
div: div.imm_to_float(),
}
}
"itf" => {
let (dst, a) = args.parse_wr_rd()?;
ArithOp::IntToFloat {
dst,
a: a.imm_to_float()
}
}
"fti" | "ftir" => {
let (dst, a) = args.parse_wr_rd()?;
ArithOp::FloatToInt {
dst,
a: a.imm_to_float(),
mode: FloatToIntMode::Round
}
}
"ftic" => {
let (dst, a) = args.parse_wr_rd()?;
ArithOp::FloatToInt {
dst,
a: a.imm_to_float(),
mode: FloatToIntMode::Ceil
}
}
"ftif" => {
let (dst, a) = args.parse_wr_rd()?;
ArithOp::FloatToInt {
dst,
a: a.imm_to_float(),
mode: FloatToIntMode::Floor
}
}
"fabs" => {
let (dst, a) = args.parse_wr_rd()?;
ArithOp::FloatAbs { dst, a: f.imm_to_float() }
}
"fsin" => {
let (dst, f) = args.parse_wr_rd()?;
ArithOp::FloatSin { dst, f: f.imm_to_float() }
}
"fasin" => {
let (dst, a) = args.parse_wr_rd()?;
ArithOp::FloatAsin { dst, a: a.imm_to_float() }
}
"fcos" => {
let (dst, f) = args.parse_wr_rd()?;
ArithOp::FloatCos { dst, f: f.imm_to_float() }
}
"facos" => {
let (dst, a) = args.parse_wr_rd()?;
ArithOp::FloatAcos { dst, a: a.imm_to_float() }
}
"ftan" => {
let (dst, f) = args.parse_wr_rd()?;
ArithOp::FloatTan { dst, f: f.imm_to_float() }
}
"fatan" => {
let (dst, a) = args.parse_wr_rd()?;
ArithOp::FloatAtan { dst, a: a.imm_to_float() }
}
"fatan2" => {
let (dst, a, b) = args.parse_wr_rd_rd()?;
ArithOp::FloatAtan2 {
dst,
y: a.imm_to_float(),
x: b.imm_to_float(),
}
}
"fcot" => {
let (dst, f) = args.parse_wr_rd()?;
ArithOp::FloatCot { dst, f: f.imm_to_float() }
}
"facot" => {
let (dst, a) = args.parse_wr_rd()?;
ArithOp::FloatAcot { dst, a: a.imm_to_float() }
}
other => {
if let Some((dst, src, mask)) = args.parse_masked_wr_rd(other, "clz")? {
if !dst.disp_equals(src) && mask.dst_pos != 0 {