mirror of
https://github.com/rdolbeau/NuBusFPGA.git
synced 2024-12-21 04:29:33 +00:00
move Scala file for CG6/Goblin acceleration into Common
This commit is contained in:
Romain Dolbeau
parent
4b53fc945a
commit
cb5d09df4d
@ -1,494 +0,0 @@
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// WARNING: this is auto-generated code!
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// See https://github.com/rdolbeau/VexRiscvBPluginGenerator/
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package vexriscv.plugin
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import spinal.core._
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import vexriscv.{Stageable, DecoderService, VexRiscv}
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object CG6Plugin {
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object CG6CtrlminmaxEnum extends SpinalEnum(binarySequential) {
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val CTRL_MAXU, CTRL_MINU = newElement()
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}
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object CG6CtrlsignextendEnum extends SpinalEnum(binarySequential) {
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val CTRL_SEXTdotB, CTRL_ZEXTdotH = newElement()
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}
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object CG6CtrlternaryEnum extends SpinalEnum(binarySequential) {
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val CTRL_CMIX, CTRL_CMOV, CTRL_FSR = newElement()
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}
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object CG6CtrlEnum extends SpinalEnum(binarySequential) {
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val CTRL_SH2ADD, CTRL_minmax, CTRL_signextend, CTRL_ternary, CTRL_REV8 = newElement()
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}
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object CG6Ctrlminmax extends Stageable(CG6CtrlminmaxEnum())
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object CG6Ctrlsignextend extends Stageable(CG6CtrlsignextendEnum())
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object CG6Ctrlternary extends Stageable(CG6CtrlternaryEnum())
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object CG6Ctrl extends Stageable(CG6CtrlEnum())
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// Prologue
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// function implementing the semantic of 32-bits generalized reverse
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def fun_grev( a:Bits, b:Bits ) : Bits = {
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val x1 = ((b&B"32'x00000001")===B"32'x00000001") ? (((a & B"32'x55555555") |<< 1) | ((a & B"32'xAAAAAAAA") |>> 1)) | a
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val x2 = ((b&B"32'x00000002")===B"32'x00000002") ? (((x1 & B"32'x33333333") |<< 2) | ((x1 & B"32'xCCCCCCCC") |>> 2)) | x1
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val x4 = ((b&B"32'x00000004")===B"32'x00000004") ? (((x2 & B"32'x0F0F0F0F") |<< 4) | ((x2 & B"32'xF0F0F0F0") |>> 4)) | x2
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val x8 = ((b&B"32'x00000008")===B"32'x00000008") ? (((x4 & B"32'x00FF00FF") |<< 8) | ((x4 & B"32'xFF00FF00") |>> 8)) | x4
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val x16 = ((b&B"32'x00000010")===B"32'x00000010") ? (((x8 & B"32'x0000FFFF") |<<16) | ((x8 & B"32'xFFFF0000") |>>16)) | x8
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x16 // return value
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}
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// function implementing the semantic of 32-bits generalized OR-combine
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def fun_gorc( a:Bits, b:Bits ) : Bits = {
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val x1 = ((b&B"32'x00000001")===B"32'x00000001") ? (a | ((a & B"32'x55555555") |<< 1) | ((a & B"32'xAAAAAAAA") |>> 1)) | a
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val x2 = ((b&B"32'x00000002")===B"32'x00000002") ? (x1 | ((x1 & B"32'x33333333") |<< 2) | ((x1 & B"32'xCCCCCCCC") |>> 2)) | x1
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val x4 = ((b&B"32'x00000004")===B"32'x00000004") ? (x2 | ((x2 & B"32'x0F0F0F0F") |<< 4) | ((x2 & B"32'xF0F0F0F0") |>> 4)) | x2
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val x8 = ((b&B"32'x00000008")===B"32'x00000008") ? (x4 | ((x4 & B"32'x00FF00FF") |<< 8) | ((x4 & B"32'xFF00FF00") |>> 8)) | x4
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val x16 = ((b&B"32'x00000010")===B"32'x00000010") ? (x8 | ((x8 & B"32'x0000FFFF") |<<16) | ((x8 & B"32'xFFFF0000") |>>16)) | x8
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x16 // return value
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}
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// helper function for the implementation of the generalized shuffles
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def fun_shuffle32_stage(src:Bits, maskL:Bits, maskR:Bits, N:Int) : Bits = {
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val x = src & ~(maskL | maskR)
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val x2 = x | ((src |<< N) & maskL) | ((src |>> N) & maskR);
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x2 // return value
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}
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// function implementing the semantic of 32-bits generalized shuffle
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def fun_shfl32(a:Bits, b:Bits) : Bits = {
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val x = a;
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val x1 = ((b&B"32'x00000008")===B"32'x00000008") ? fun_shuffle32_stage(x , B"32'x00FF0000", B"32'x0000FF00", 8) | x;
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val x2 = ((b&B"32'x00000004")===B"32'x00000004") ? fun_shuffle32_stage(x1, B"32'x0F000F00", B"32'x00F000F0", 4) | x1;
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val x3 = ((b&B"32'x00000002")===B"32'x00000002") ? fun_shuffle32_stage(x2, B"32'x30303030", B"32'x0C0C0C0C", 2) | x2;
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val x4 = ((b&B"32'x00000001")===B"32'x00000001") ? fun_shuffle32_stage(x3, B"32'x44444444", B"32'x22222222", 1) | x3;
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x4 // return value
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}
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// function implementing the semantic of 32-bits generalized unshuffle
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def fun_unshfl32(a:Bits, b:Bits) : Bits = {
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val x = a;
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val x1 = ((b&B"32'x00000001")===B"32'x00000001") ? fun_shuffle32_stage(x , B"32'x44444444", B"32'x22222222", 1) | x;
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val x2 = ((b&B"32'x00000002")===B"32'x00000002") ? fun_shuffle32_stage(x1, B"32'x30303030", B"32'x0C0C0C0C", 2) | x1;
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val x3 = ((b&B"32'x00000004")===B"32'x00000004") ? fun_shuffle32_stage(x2, B"32'x0F000F00", B"32'x00F000F0", 4) | x2;
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val x4 = ((b&B"32'x00000008")===B"32'x00000008") ? fun_shuffle32_stage(x3, B"32'x00FF0000", B"32'x0000FF00", 8) | x3;
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x4 // return value
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}
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// this is trying to look like DOI 10.2478/jee-2015-0054
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def fun_clz_NLCi(x:Bits): Bits = {
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val r2 = (~(x(0) | x(1) | x(2) | x(3)))
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val r1 = (~(x(2) | x(3)))
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val r0 = (~(x(3) | (x(1) & ~x(2))))
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val r = r2 ## r1 ## r0
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r // return value
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}
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def fun_clz_BNE(a:Bits) : Bits = {
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val a01 = ~(a(0) & a(1))
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val a23 = ~(a(2) & a(3))
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val a45 = ~(a(4) & a(5))
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val a67 = ~(a(6) & a(7))
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val a0123 = ~(a01 | a23) // also r(2)
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val a4567 = ~(a45 | a67)
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val a56 = ~(a(5) & ~a(6))
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val a024 = (a(0) & a(2) & a(4)) // AND not NAND
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val a13 = ~(a(1) & a(3))
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val a12 = ~(a(1) & ~a(2))
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val r3 = ((a0123 & a4567)) // AND not NAND
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val r2 = (a0123)
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val r1 = (~(a01 | (~a23 & a45)))
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val r0 = (~((~((a56) & (a024))) & (~((a13) & (a12) & (a(0))))))
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val r = r3 ## r2 ## r1 ##r0
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r // return value
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}
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// For trailing count, count using use leading count on bit-reversed value
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def fun_cltz(ino:Bits, ctz:Bool) : Bits = {
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val inr = ino(0) ## ino(1) ## ino(2) ## ino(3) ## ino(4) ## ino(5) ## ino(6) ## ino(7) ## ino(8) ## ino(9) ## ino(10) ## ino(11) ## ino(12) ## ino(13) ## ino(14) ## ino(15) ## ino(16) ## ino(17) ## ino(18) ## ino(19) ## ino(20) ## ino(21) ## ino(22) ## ino(23) ## ino(24) ## ino(25) ## ino(26) ## ino(27) ## ino(28) ## ino(29) ## ino(30) ## ino(31)
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val in = (ctz === True) ? (inr) | (ino)
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val nlc7 = fun_clz_NLCi(in(31 downto 28))
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val nlc6 = fun_clz_NLCi(in(27 downto 24))
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val nlc5 = fun_clz_NLCi(in(23 downto 20))
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val nlc4 = fun_clz_NLCi(in(19 downto 16))
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val nlc3 = fun_clz_NLCi(in(15 downto 12))
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val nlc2 = fun_clz_NLCi(in(11 downto 8))
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val nlc1 = fun_clz_NLCi(in( 7 downto 4))
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val nlc0 = fun_clz_NLCi(in( 3 downto 0))
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val a = nlc0(2) ## nlc1(2) ## nlc2(2) ## nlc3(2) ## nlc4(2) ## nlc5(2) ## nlc6(2) ## nlc7(2)
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val bne = fun_clz_BNE(a)
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val muxo = (bne(2 downto 0)).mux(
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B"3'b000" -> nlc7(1 downto 0),
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B"3'b001" -> nlc6(1 downto 0),
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B"3'b010" -> nlc5(1 downto 0),
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B"3'b011" -> nlc4(1 downto 0),
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B"3'b100" -> nlc3(1 downto 0),
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B"3'b101" -> nlc2(1 downto 0),
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B"3'b110" -> nlc1(1 downto 0),
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B"3'b111" -> nlc0(1 downto 0)
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)
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val r = (bne(3)) ? B"6'b100000" | (B"1'b0" ## bne(2 downto 0) ## muxo(1 downto 0)) // 6 bits
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r.resize(32) // return value
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}
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// naive popcnt
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def fun_popcnt(in:Bits) : Bits = {
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val r = in(0).asBits.resize(6).asUInt + in(1).asBits.resize(6).asUInt + in(2).asBits.resize(6).asUInt + in(3).asBits.resize(6).asUInt +
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in(4).asBits.resize(6).asUInt + in(5).asBits.resize(6).asUInt + in(6).asBits.resize(6).asUInt + in(7).asBits.resize(6).asUInt +
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in(8).asBits.resize(6).asUInt + in(9).asBits.resize(6).asUInt + in(10).asBits.resize(6).asUInt + in(11).asBits.resize(6).asUInt +
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in(12).asBits.resize(6).asUInt + in(13).asBits.resize(6).asUInt + in(14).asBits.resize(6).asUInt + in(15).asBits.resize(6).asUInt +
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in(16).asBits.resize(6).asUInt + in(17).asBits.resize(6).asUInt + in(18).asBits.resize(6).asUInt + in(19).asBits.resize(6).asUInt +
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in(20).asBits.resize(6).asUInt + in(21).asBits.resize(6).asUInt + in(22).asBits.resize(6).asUInt + in(23).asBits.resize(6).asUInt +
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in(24).asBits.resize(6).asUInt + in(25).asBits.resize(6).asUInt + in(26).asBits.resize(6).asUInt + in(27).asBits.resize(6).asUInt +
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in(28).asBits.resize(6).asUInt + in(29).asBits.resize(6).asUInt + in(30).asBits.resize(6).asUInt + in(31).asBits.resize(6).asUInt
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r.asBits.resize(32) // return value
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}
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//XPERMs
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def fun_xperm_n(rs1:Bits, rs2:Bits) : Bits = {
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val i0 = rs2(3 downto 0).asUInt
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val i1 = rs2(7 downto 4).asUInt
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val i2 = rs2(11 downto 8).asUInt
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val i3 = rs2(15 downto 12).asUInt
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val i4 = rs2(19 downto 16).asUInt
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val i5 = rs2(23 downto 20).asUInt
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val i6 = rs2(27 downto 24).asUInt
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val i7 = rs2(31 downto 28).asUInt
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val r0 = (i0).mux(
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0 -> rs1(3 downto 0),
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1 -> rs1(7 downto 4),
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2 -> rs1(11 downto 8),
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3 -> rs1(15 downto 12),
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4 -> rs1(19 downto 16),
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5 -> rs1(23 downto 20),
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6 -> rs1(27 downto 24),
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7 -> rs1(31 downto 28),
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default -> B"4'b0000"
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)
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val r1 = (i1).mux(
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0 -> rs1(3 downto 0),
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1 -> rs1(7 downto 4),
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2 -> rs1(11 downto 8),
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3 -> rs1(15 downto 12),
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4 -> rs1(19 downto 16),
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5 -> rs1(23 downto 20),
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6 -> rs1(27 downto 24),
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7 -> rs1(31 downto 28),
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default -> B"4'b0000"
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)
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val r2 = (i2).mux(
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0 -> rs1(3 downto 0),
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1 -> rs1(7 downto 4),
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2 -> rs1(11 downto 8),
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3 -> rs1(15 downto 12),
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4 -> rs1(19 downto 16),
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5 -> rs1(23 downto 20),
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6 -> rs1(27 downto 24),
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7 -> rs1(31 downto 28),
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default -> B"4'b0000"
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)
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val r3 = (i3).mux(
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0 -> rs1(3 downto 0),
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1 -> rs1(7 downto 4),
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2 -> rs1(11 downto 8),
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3 -> rs1(15 downto 12),
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4 -> rs1(19 downto 16),
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5 -> rs1(23 downto 20),
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6 -> rs1(27 downto 24),
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7 -> rs1(31 downto 28),
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default -> B"4'b0000"
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)
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val r4 = (i4).mux(
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0 -> rs1(3 downto 0),
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1 -> rs1(7 downto 4),
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2 -> rs1(11 downto 8),
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3 -> rs1(15 downto 12),
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4 -> rs1(19 downto 16),
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5 -> rs1(23 downto 20),
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6 -> rs1(27 downto 24),
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7 -> rs1(31 downto 28),
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default -> B"4'b0000"
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)
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val r5 = (i5).mux(
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0 -> rs1(3 downto 0),
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1 -> rs1(7 downto 4),
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2 -> rs1(11 downto 8),
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3 -> rs1(15 downto 12),
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4 -> rs1(19 downto 16),
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5 -> rs1(23 downto 20),
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6 -> rs1(27 downto 24),
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7 -> rs1(31 downto 28),
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default -> B"4'b0000"
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)
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val r6 = (i6).mux(
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0 -> rs1(3 downto 0),
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1 -> rs1(7 downto 4),
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2 -> rs1(11 downto 8),
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3 -> rs1(15 downto 12),
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4 -> rs1(19 downto 16),
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5 -> rs1(23 downto 20),
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6 -> rs1(27 downto 24),
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7 -> rs1(31 downto 28),
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default -> B"4'b0000"
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)
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val r7 = (i7).mux(
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0 -> rs1(3 downto 0),
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1 -> rs1(7 downto 4),
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2 -> rs1(11 downto 8),
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3 -> rs1(15 downto 12),
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4 -> rs1(19 downto 16),
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5 -> rs1(23 downto 20),
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6 -> rs1(27 downto 24),
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7 -> rs1(31 downto 28),
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default -> B"4'b0000"
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)
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r7 ## r6 ## r5 ## r4 ## r3 ## r2 ## r1 ## r0 // return value
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}
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def fun_xperm_b(rs1:Bits, rs2:Bits) : Bits = {
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val i0 = rs2(7 downto 0).asUInt;
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val i1 = rs2(15 downto 8).asUInt;
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val i2 = rs2(23 downto 16).asUInt;
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val i3 = rs2(31 downto 24).asUInt;
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val r0 = (i0).mux(
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0 -> rs1(7 downto 0),
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1 -> rs1(15 downto 8),
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2 -> rs1(23 downto 16),
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3 -> rs1(31 downto 24),
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default -> B"8'b00000000"
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)
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val r1 = (i1).mux(
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0 -> rs1(7 downto 0),
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1 -> rs1(15 downto 8),
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2 -> rs1(23 downto 16),
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3 -> rs1(31 downto 24),
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default -> B"8'b00000000"
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)
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val r2 = (i2).mux(
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0 -> rs1(7 downto 0),
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1 -> rs1(15 downto 8),
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2 -> rs1(23 downto 16),
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3 -> rs1(31 downto 24),
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default -> B"8'b00000000"
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)
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val r3 = (i3).mux(
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0 -> rs1(7 downto 0),
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1 -> rs1(15 downto 8),
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2 -> rs1(23 downto 16),
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3 -> rs1(31 downto 24),
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default -> B"8'b00000000"
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)
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r3 ## r2 ## r1 ## r0 // return value
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}
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def fun_xperm_h(rs1:Bits, rs2:Bits) : Bits = {
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val i0 = rs2(15 downto 0).asUInt;
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val i1 = rs2(31 downto 16).asUInt;
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val r0 = (i0).mux(
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0 -> rs1(15 downto 0),
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1 -> rs1(31 downto 16),
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default -> B"16'x0000"
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)
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val r1 = (i1).mux(
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0 -> rs1(15 downto 0),
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1 -> rs1(31 downto 16),
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default -> B"16'x0000"
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)
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r1 ## r0 // return value
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}
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def fun_fsl(rs1:Bits, rs3:Bits, rs2:Bits) : Bits = {
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val rawshamt = (rs2 & B"32'x0000003F").asUInt
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val shamt = (rawshamt >= 32) ? (rawshamt - 32) | (rawshamt)
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val A = (shamt === rawshamt) ? (rs1) | (rs3)
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val B = (shamt === rawshamt) ? (rs3) | (rs1)
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val r = (shamt === 0) ? (A) | ((A |<< shamt) | (B |>> (32-shamt)))
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r // return value
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}
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def fun_fsr(rs1:Bits, rs3:Bits, rs2:Bits) : Bits = {
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val rawshamt = (rs2 & B"32'x0000003F").asUInt
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val shamt = (rawshamt >= 32) ? (rawshamt - 32) | (rawshamt)
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val A = (shamt === rawshamt) ? (rs1) | (rs3)
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val B = (shamt === rawshamt) ? (rs3) | (rs1)
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val r = (shamt === 0) ? (A) | ((A |>> shamt) | (B |<< (32-shamt)))
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r // return value
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}
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def fun_bfp(rs1:Bits, rs2:Bits) : Bits = {
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val off = rs2(20 downto 16).asUInt
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val rawlen = rs2(27 downto 24).asUInt
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val convlen = (rawlen === 0) ? (rawlen+16) | (rawlen)
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val len = ((convlen + off) > 32) ? (32 - off) | (convlen)
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val allones = B"16'xFFFF"
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val lenones = (allones |>> (16-len))
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//val one = B"17'x00001"
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||||
//val lenones = (((one |<< len).asUInt) - 1).asBits;
|
||||
val mask = (lenones.resize(32) |<< off);
|
||||
val data = (rs2 & lenones.resize(32)) |<< off;
|
||||
|
||||
val r = (rs1 & ~mask) | data
|
||||
|
||||
r // return value
|
||||
}
|
||||
|
||||
|
||||
def fun_rev8(a:Bits) : Bits = {
|
||||
val r = a(7 downto 0) ## a(15 downto 8) ## a(23 downto 16) ## a(31 downto 24)
|
||||
|
||||
r // return value
|
||||
}
|
||||
def fun_orcb(a:Bits) : Bits = {
|
||||
val x1 = (a | ((a & B"32'x55555555") |<< 1) | ((a & B"32'xAAAAAAAA") |>> 1))
|
||||
val x2 = (x1 | ((x1 & B"32'x33333333") |<< 2) | ((x1 & B"32'xCCCCCCCC") |>> 2))
|
||||
val x4 = (x2 | ((x2 & B"32'x0F0F0F0F") |<< 4) | ((x2 & B"32'xF0F0F0F0") |>> 4))
|
||||
|
||||
x4 // return value
|
||||
}
|
||||
def fun_revdotb(a:Bits) : Bits = {
|
||||
val r = a(24) ## a(25) ## a(26) ## a(27) ## a(28) ## a(29) ## a(30) ## a(31) ##
|
||||
a(16) ## a(17) ## a(18) ## a(19) ## a(20) ## a(21) ## a(22) ## a(23) ##
|
||||
a( 8) ## a( 9) ## a(10) ## a(11) ## a(12) ## a(13) ## a(14) ## a(15) ##
|
||||
a( 0) ## a( 1) ## a( 2) ## a( 3) ## a( 4) ## a( 5) ## a( 6) ## a( 7)
|
||||
|
||||
r // return value;
|
||||
}
|
||||
// helper function for the implementation of the generalized shuffles
|
||||
def fun_shuffle32bis_stage(src:Bits, maskL:Bits, maskR:Bits, N:Int) : Bits = {
|
||||
val x = src & ~(maskL | maskR)
|
||||
val x2 = x | ((src |<< N) & maskL) | ((src |>> N) & maskR);
|
||||
x2 // return value
|
||||
}
|
||||
def fun_zip(a:Bits) : Bits = {
|
||||
val x = a;
|
||||
val x1 = fun_shuffle32bis_stage(x , B"32'x00FF0000", B"32'x0000FF00", 8)
|
||||
val x2 = fun_shuffle32bis_stage(x1, B"32'x0F000F00", B"32'x00F000F0", 4)
|
||||
val x3 = fun_shuffle32bis_stage(x2, B"32'x30303030", B"32'x0C0C0C0C", 2)
|
||||
val x4 = fun_shuffle32bis_stage(x3, B"32'x44444444", B"32'x22222222", 1)
|
||||
x4 // return value
|
||||
}
|
||||
def fun_unzip(a:Bits) : Bits = {
|
||||
val x = a;
|
||||
val x1 = fun_shuffle32bis_stage(x , B"32'x44444444", B"32'x22222222", 1)
|
||||
val x2 = fun_shuffle32bis_stage(x1, B"32'x30303030", B"32'x0C0C0C0C", 2)
|
||||
val x3 = fun_shuffle32bis_stage(x2, B"32'x0F000F00", B"32'x00F000F0", 4)
|
||||
val x4 = fun_shuffle32bis_stage(x3, B"32'x00FF0000", B"32'x0000FF00", 8)
|
||||
x4 // return value
|
||||
}
|
||||
|
||||
// End prologue
|
||||
} // object Plugin
|
||||
class CG6Plugin(earlyInjection : Boolean = true) extends Plugin[VexRiscv] {
|
||||
import CG6Plugin._
|
||||
object IS_CG6 extends Stageable(Bool)
|
||||
object CG6_FINAL_OUTPUT extends Stageable(Bits(32 bits))
|
||||
override def setup(pipeline: VexRiscv): Unit = {
|
||||
import pipeline.config._
|
||||
val immediateActions = List[(Stageable[_ <: BaseType],Any)](
|
||||
SRC1_CTRL -> Src1CtrlEnum.RS,
|
||||
SRC2_CTRL -> Src2CtrlEnum.IMI,
|
||||
REGFILE_WRITE_VALID -> True,
|
||||
BYPASSABLE_EXECUTE_STAGE -> Bool(earlyInjection),
|
||||
BYPASSABLE_MEMORY_STAGE -> True,
|
||||
RS1_USE -> True,
|
||||
IS_CG6 -> True
|
||||
)
|
||||
val binaryActions = List[(Stageable[_ <: BaseType],Any)](
|
||||
SRC1_CTRL -> Src1CtrlEnum.RS,
|
||||
SRC2_CTRL -> Src2CtrlEnum.RS,
|
||||
REGFILE_WRITE_VALID -> True,
|
||||
BYPASSABLE_EXECUTE_STAGE -> Bool(earlyInjection),
|
||||
BYPASSABLE_MEMORY_STAGE -> True,
|
||||
RS1_USE -> True,
|
||||
RS2_USE -> True,
|
||||
IS_CG6 -> True
|
||||
)
|
||||
val unaryActions = List[(Stageable[_ <: BaseType],Any)](
|
||||
SRC1_CTRL -> Src1CtrlEnum.RS,
|
||||
REGFILE_WRITE_VALID -> True,
|
||||
BYPASSABLE_EXECUTE_STAGE -> Bool(earlyInjection),
|
||||
BYPASSABLE_MEMORY_STAGE -> True,
|
||||
RS1_USE -> True,
|
||||
IS_CG6 -> True
|
||||
)
|
||||
val ternaryActions = List[(Stageable[_ <: BaseType],Any)](
|
||||
SRC1_CTRL -> Src1CtrlEnum.RS,
|
||||
SRC2_CTRL -> Src2CtrlEnum.RS,
|
||||
SRC3_CTRL -> Src3CtrlEnum.RS,
|
||||
REGFILE_WRITE_VALID -> True,
|
||||
BYPASSABLE_EXECUTE_STAGE -> Bool(earlyInjection),
|
||||
BYPASSABLE_MEMORY_STAGE -> True,
|
||||
RS1_USE -> True,
|
||||
RS2_USE -> True,
|
||||
RS3_USE -> True,
|
||||
IS_CG6 -> True
|
||||
)
|
||||
val immTernaryActions = List[(Stageable[_ <: BaseType],Any)](
|
||||
SRC1_CTRL -> Src1CtrlEnum.RS,
|
||||
SRC2_CTRL -> Src2CtrlEnum.IMI,
|
||||
SRC3_CTRL -> Src3CtrlEnum.RS,
|
||||
REGFILE_WRITE_VALID -> True,
|
||||
BYPASSABLE_EXECUTE_STAGE -> Bool(earlyInjection),
|
||||
BYPASSABLE_MEMORY_STAGE -> True,
|
||||
RS1_USE -> True,
|
||||
RS3_USE -> True,
|
||||
IS_CG6 -> True
|
||||
)
|
||||
def SH2ADD_KEY = M"0010000----------100-----0110011"
|
||||
def MINU_KEY = M"0000101----------101-----0110011"
|
||||
def MAXU_KEY = M"0000101----------111-----0110011"
|
||||
def SEXTdotB_KEY = M"011000000100-----001-----0010011"
|
||||
def CMIX_KEY = M"-----11----------001-----0110011"
|
||||
def CMOV_KEY = M"-----11----------101-----0110011"
|
||||
def FSR_KEY = M"-----10----------101-----0110011"
|
||||
def ZEXTdotH_KEY = M"000010000000-----100-----0110011"
|
||||
def REV8_KEY = M"011010011000-----101-----0010011"
|
||||
val decoderService = pipeline.service(classOf[DecoderService])
|
||||
decoderService.addDefault(IS_CG6, False)
|
||||
decoderService.add(List(
|
||||
SH2ADD_KEY -> (binaryActions ++ List(CG6Ctrl -> CG6CtrlEnum.CTRL_SH2ADD)),
|
||||
MINU_KEY -> (binaryActions ++ List(CG6Ctrl -> CG6CtrlEnum.CTRL_minmax, CG6Ctrlminmax -> CG6CtrlminmaxEnum.CTRL_MINU)),
|
||||
MAXU_KEY -> (binaryActions ++ List(CG6Ctrl -> CG6CtrlEnum.CTRL_minmax, CG6Ctrlminmax -> CG6CtrlminmaxEnum.CTRL_MAXU)),
|
||||
SEXTdotB_KEY -> (unaryActions ++ List(CG6Ctrl -> CG6CtrlEnum.CTRL_signextend, CG6Ctrlsignextend -> CG6CtrlsignextendEnum.CTRL_SEXTdotB)),
|
||||
ZEXTdotH_KEY -> (unaryActions ++ List(CG6Ctrl -> CG6CtrlEnum.CTRL_signextend, CG6Ctrlsignextend -> CG6CtrlsignextendEnum.CTRL_ZEXTdotH)),
|
||||
CMIX_KEY -> (ternaryActions ++ List(CG6Ctrl -> CG6CtrlEnum.CTRL_ternary, CG6Ctrlternary -> CG6CtrlternaryEnum.CTRL_CMIX)),
|
||||
CMOV_KEY -> (ternaryActions ++ List(CG6Ctrl -> CG6CtrlEnum.CTRL_ternary, CG6Ctrlternary -> CG6CtrlternaryEnum.CTRL_CMOV)),
|
||||
FSR_KEY -> (ternaryActions ++ List(CG6Ctrl -> CG6CtrlEnum.CTRL_ternary, CG6Ctrlternary -> CG6CtrlternaryEnum.CTRL_FSR)),
|
||||
REV8_KEY -> (unaryActions ++ List(CG6Ctrl -> CG6CtrlEnum.CTRL_REV8))
|
||||
))
|
||||
} // override def setup
|
||||
override def build(pipeline: VexRiscv): Unit = {
|
||||
import pipeline._
|
||||
import pipeline.config._
|
||||
execute plug new Area{
|
||||
import execute._
|
||||
val val_minmax = input(CG6Ctrlminmax).mux(
|
||||
CG6CtrlminmaxEnum.CTRL_MAXU -> ((input(SRC1).asUInt > input(SRC2).asUInt) ? input(SRC1) | input(SRC2)).asBits,
|
||||
CG6CtrlminmaxEnum.CTRL_MINU -> ((input(SRC1).asUInt < input(SRC2).asUInt) ? input(SRC1) | input(SRC2)).asBits
|
||||
) // mux minmax
|
||||
val val_signextend = input(CG6Ctrlsignextend).mux(
|
||||
CG6CtrlsignextendEnum.CTRL_SEXTdotB -> (Bits(24 bits).setAllTo(input(SRC1)(7)) ## input(SRC1)(7 downto 0)).asBits,
|
||||
CG6CtrlsignextendEnum.CTRL_ZEXTdotH -> (B"16'x0000" ## input(SRC1)(15 downto 0)).asBits
|
||||
) // mux signextend
|
||||
val val_ternary = input(CG6Ctrlternary).mux(
|
||||
CG6CtrlternaryEnum.CTRL_CMIX -> ((input(SRC1) & input(SRC2)) | (input(SRC3) & ~input(SRC2))).asBits,
|
||||
CG6CtrlternaryEnum.CTRL_CMOV -> ((input(SRC2).asUInt =/= 0) ? input(SRC1) | input(SRC3)).asBits,
|
||||
CG6CtrlternaryEnum.CTRL_FSR -> fun_fsr(input(SRC1), input(SRC3), input(SRC2)).asBits
|
||||
) // mux ternary
|
||||
insert(CG6_FINAL_OUTPUT) := input(CG6Ctrl).mux(
|
||||
CG6CtrlEnum.CTRL_SH2ADD -> ((input(SRC1) |<< 2).asUInt + input(SRC2).asUInt).asBits,
|
||||
CG6CtrlEnum.CTRL_minmax -> val_minmax.asBits,
|
||||
CG6CtrlEnum.CTRL_signextend -> val_signextend.asBits,
|
||||
CG6CtrlEnum.CTRL_ternary -> val_ternary.asBits,
|
||||
CG6CtrlEnum.CTRL_REV8 -> fun_rev8(input(SRC1)).asBits
|
||||
) // primary mux
|
||||
} // execute plug newArea
|
||||
val injectionStage = if(earlyInjection) execute else memory
|
||||
injectionStage plug new Area {
|
||||
import injectionStage._
|
||||
when (arbitration.isValid && input(IS_CG6)) {
|
||||
output(REGFILE_WRITE_DATA) := input(CG6_FINAL_OUTPUT)
|
||||
} // when input is
|
||||
} // injectionStage plug newArea
|
||||
} // override def build
|
||||
} // class Plugin
|
||||
@ -1,141 +0,0 @@
|
||||
package vexriscv.demo
|
||||
|
||||
// CG6Plugin is:
|
||||
// ./gen_plugin -n CG6 -i data_bitmanip.txt -i data_bitmanip_ZbbOnly.txt -I SH2ADD -I MINU -I MAXU -I REV8 -I CMOV -I CMIX -I FSR -I ZEXTdotH -I SEXTdotB >| CG6.scala
|
||||
// Goblin Plugins are:
|
||||
// ./gen_plugin -n Goblin -i data_Zpn.txt -I UKADD8 -I UKSUB8 >| Goblin.scala
|
||||
// ./gen_plugin -n Goblin -i data_Zxrender_2cycles.txt -I UFMA8VxV >| Goblin2c.scala
|
||||
|
||||
import vexriscv.plugin._
|
||||
import vexriscv.{VexRiscv, VexRiscvConfig, plugin}
|
||||
import spinal.core._
|
||||
import vexriscv.ip.InstructionCacheConfig
|
||||
|
||||
import spinal.lib._
|
||||
import spinal.lib.sim.Phase
|
||||
import vexriscv.ip.{DataCacheConfig, InstructionCacheConfig}
|
||||
import vexriscv.plugin._
|
||||
|
||||
object GenGoblinAccel { // extends App {
|
||||
def main(args: Array[String]) {
|
||||
val report = SpinalVerilog{
|
||||
val config = VexRiscvConfig(
|
||||
plugins = List(
|
||||
new IBusCachedPlugin(
|
||||
resetVector = 0xF0910000l, // beginning of ROM (NuBus)
|
||||
//resetVector = 0x00410000l, // beginning of ROM (SBus)
|
||||
relaxedPcCalculation = false,
|
||||
prediction = STATIC,
|
||||
config = InstructionCacheConfig(
|
||||
cacheSize = 256,
|
||||
bytePerLine = 16,
|
||||
wayCount = 1,
|
||||
addressWidth = 32,
|
||||
cpuDataWidth = 32,
|
||||
memDataWidth = 32,
|
||||
catchIllegalAccess = false,
|
||||
catchAccessFault = false,
|
||||
asyncTagMemory = false,
|
||||
twoCycleRam = false,
|
||||
twoCycleCache = true
|
||||
)
|
||||
),
|
||||
// new DBusSimplePlugin(
|
||||
// catchAddressMisaligned = false,
|
||||
// catchAccessFault = false
|
||||
// ),
|
||||
new DBusCachedPlugin(
|
||||
config = new DataCacheConfig(
|
||||
cacheSize = 256,
|
||||
bytePerLine = 16,
|
||||
wayCount = 2,
|
||||
addressWidth = 32,
|
||||
cpuDataWidth = 128,
|
||||
memDataWidth = 128,
|
||||
catchAccessError = false,
|
||||
catchIllegal = false,
|
||||
catchUnaligned = false,
|
||||
pendingMax = 8, // 64 ; irrelevant? only for SMP?
|
||||
withWriteAggregation = true // required if memDataWidth > 32
|
||||
),
|
||||
dBusCmdMasterPipe = false, // prohibited if memDataWidth > 32
|
||||
dBusCmdSlavePipe = true,
|
||||
dBusRspSlavePipe = true
|
||||
),
|
||||
new StaticMemoryTranslatorPlugin(
|
||||
// only cache the sdram memory
|
||||
// NuBus
|
||||
ioRange = addr => ((addr(31 downto 28) =/= 0x8) & // SDRAM
|
||||
(addr(31 downto 12) =/= 0xF0902) & // SRAM
|
||||
(addr(31 downto 16) =/= 0xF091) // ROM
|
||||
)
|
||||
// SBus
|
||||
//ioRange = addr => ((addr(31 downto 28) =/= 0x8) & // SDRAM
|
||||
// (addr(31 downto 16) =/= 0x0042) & // SRAM
|
||||
// (addr(31 downto 16) =/= 0x0041) // ROM
|
||||
// )
|
||||
),
|
||||
new DecoderSimplePlugin(
|
||||
catchIllegalInstruction = false
|
||||
),
|
||||
new RegFileOddEvenPlugin(
|
||||
regFileReadyKind = plugin.ASYNC, // FIXME why is even-odd failing with SYNC??? (and what's the difference...)
|
||||
zeroBoot = false
|
||||
),
|
||||
new IntAluPlugin,
|
||||
new SrcPlugin(
|
||||
separatedAddSub = false,
|
||||
executeInsertion = true
|
||||
),
|
||||
//new LightShifterPlugin,
|
||||
new MulPlugin,
|
||||
new FullBarrelShifterPlugin,
|
||||
new CG6Plugin(earlyInjection = false), // full-custom list
|
||||
new GoblinPlugin(earlyInjection = false), // full-custom list
|
||||
new Goblin2cPlugin(earlyInjection = false), // full-custom list
|
||||
new HazardSimplePlugin(
|
||||
bypassExecute = true,
|
||||
bypassMemory = true,
|
||||
bypassWriteBack = true,
|
||||
bypassWriteBackBuffer = true,
|
||||
pessimisticUseSrc = false,
|
||||
pessimisticWriteRegFile = false,
|
||||
pessimisticAddressMatch = false
|
||||
),
|
||||
new BranchPlugin(
|
||||
earlyBranch = false,
|
||||
catchAddressMisaligned = false
|
||||
),
|
||||
new YamlPlugin("cpu0.yaml")
|
||||
)
|
||||
)
|
||||
|
||||
val cpu = new VexRiscv(config)
|
||||
|
||||
cpu.rework {
|
||||
for (plugin <- config.plugins) plugin match {
|
||||
case plugin: IBusSimplePlugin => {
|
||||
plugin.iBus.setAsDirectionLess() //Unset IO properties of iBus
|
||||
master(plugin.iBus.toWishbone()).setName("iBusWishbone")
|
||||
}
|
||||
case plugin: IBusCachedPlugin => {
|
||||
plugin.iBus.setAsDirectionLess()
|
||||
master(plugin.iBus.toWishbone()).setName("iBusWishbone")
|
||||
}
|
||||
case plugin: DBusSimplePlugin => {
|
||||
plugin.dBus.setAsDirectionLess()
|
||||
master(plugin.dBus.toWishbone()).setName("dBusWishbone")
|
||||
}
|
||||
case plugin: DBusCachedPlugin => {
|
||||
plugin.dBus.setAsDirectionLess()
|
||||
master(plugin.dBus.toWishbone()).setName("dBusWishbone")
|
||||
}
|
||||
case _ =>
|
||||
}
|
||||
}
|
||||
|
||||
cpu
|
||||
}
|
||||
//report.printPruned()
|
||||
}
|
||||
}
|
||||
@ -1,596 +0,0 @@
|
||||
// WARNING: this is auto-generated code!
|
||||
// See https://github.com/rdolbeau/VexRiscvBPluginGenerator/
|
||||
package vexriscv.plugin
|
||||
import spinal.core._
|
||||
import vexriscv.{Stageable, DecoderService, VexRiscv}
|
||||
object GoblinPlugin {
|
||||
object GoblinCtrlpdpikadd8Enum extends SpinalEnum(binarySequential) {
|
||||
val CTRL_UKADD8, CTRL_UKSUB8 = newElement()
|
||||
}
|
||||
object GoblinCtrlEnum extends SpinalEnum(binarySequential) {
|
||||
val CTRL_pdpikadd8 = newElement()
|
||||
}
|
||||
object GoblinCtrlpdpikadd8 extends Stageable(GoblinCtrlpdpikadd8Enum())
|
||||
object GoblinCtrl extends Stageable(GoblinCtrlEnum())
|
||||
// Prologue
|
||||
|
||||
def fun_add8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = (rs1( 7 downto 0).asUInt + rs2( 7 downto 0).asUInt).asBits.resize(8)
|
||||
val b1 = (rs1(15 downto 8).asUInt + rs2(15 downto 8).asUInt).asBits.resize(8)
|
||||
val b2 = (rs1(23 downto 16).asUInt + rs2(23 downto 16).asUInt).asBits.resize(8)
|
||||
val b3 = (rs1(31 downto 24).asUInt + rs2(31 downto 24).asUInt).asBits.resize(8)
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_radd8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = ((rs1( 7) ## rs1( 7 downto 0)).asSInt + (rs2( 7) ## rs2( 7 downto 0)).asSInt).asBits.resize(9)
|
||||
val b1 = ((rs1(15) ## rs1(15 downto 8)).asSInt + (rs2(15) ## rs2(15 downto 8)).asSInt).asBits.resize(9)
|
||||
val b2 = ((rs1(23) ## rs1(23 downto 16)).asSInt + (rs2(23) ## rs2(23 downto 16)).asSInt).asBits.resize(9)
|
||||
val b3 = ((rs1(31) ## rs1(31 downto 24)).asSInt + (rs2(31) ## rs2(31 downto 24)).asSInt).asBits.resize(9)
|
||||
|
||||
b3(8 downto 1) ## b2(8 downto 1) ## b1(8 downto 1) ## b0(8 downto 1) // return value
|
||||
}
|
||||
def fun_rsub8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = ((rs1( 7) ## rs1( 7 downto 0)).asSInt - (rs2( 7) ## rs2( 7 downto 0)).asSInt).asBits.resize(9)
|
||||
val b1 = ((rs1(15) ## rs1(15 downto 8)).asSInt - (rs2(15) ## rs2(15 downto 8)).asSInt).asBits.resize(9)
|
||||
val b2 = ((rs1(23) ## rs1(23 downto 16)).asSInt - (rs2(23) ## rs2(23 downto 16)).asSInt).asBits.resize(9)
|
||||
val b3 = ((rs1(31) ## rs1(31 downto 24)).asSInt - (rs2(31) ## rs2(31 downto 24)).asSInt).asBits.resize(9)
|
||||
|
||||
b3(8 downto 1) ## b2(8 downto 1) ## b1(8 downto 1) ## b0(8 downto 1) // return value
|
||||
}
|
||||
|
||||
def fun_add16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val h0 = (rs1(15 downto 0).asUInt + rs2(15 downto 0).asUInt).asBits.resize(16)
|
||||
val h1 = (rs1(31 downto 16).asUInt + rs2(31 downto 16).asUInt).asBits.resize(16)
|
||||
|
||||
h1 ## h0 // return value
|
||||
}
|
||||
def fun_radd16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val h0 = ((rs1(15) ## rs1(15 downto 0)).asSInt + (rs2(15) ## rs2(15 downto 0)).asSInt).asBits.resize(17)
|
||||
val h1 = ((rs1(31) ## rs1(31 downto 16)).asSInt + (rs2(31) ## rs2(31 downto 16)).asSInt).asBits.resize(17)
|
||||
|
||||
h1(16 downto 1) ## h0(16 downto 1) // return value
|
||||
}
|
||||
def fun_rsub16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val h0 = ((rs1(15) ## rs1(15 downto 0)).asSInt - (rs2(15) ## rs2(15 downto 0)).asSInt).asBits.resize(17)
|
||||
val h1 = ((rs1(31) ## rs1(31 downto 16)).asSInt - (rs2(31) ## rs2(31 downto 16)).asSInt).asBits.resize(17)
|
||||
|
||||
h1(16 downto 1) ## h0(16 downto 1) // return value
|
||||
}
|
||||
|
||||
def fun_radd32(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val s = ((rs1(31) ## rs1).asSInt + (rs2(31) ## rs2).asSInt).asBits.resize(33)
|
||||
|
||||
s(32 downto 1) // return value
|
||||
}
|
||||
def fun_rsub32(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val s = ((rs1(31) ## rs1).asSInt - (rs2(31) ## rs2).asSInt).asBits.resize(33)
|
||||
|
||||
s(32 downto 1) // return value
|
||||
}
|
||||
def fun_ave(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val inter = (1 + (rs1 ## B"1'b0").asUInt + (rs2 ## B"1'b0").asUInt).asBits.resize(33)
|
||||
|
||||
inter(32 downto 1) // return value
|
||||
}
|
||||
|
||||
def fun_bitrev(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val msb = rs2(4 downto 0).asUInt
|
||||
val rs1r = rs1(0) ## rs1(1) ## rs1(2) ## rs1(3) ## rs1(4) ## rs1(5) ## rs1(6) ## rs1(7) ## rs1(8) ## rs1(9) ## rs1(10) ## rs1(11) ## rs1(12) ## rs1(13) ## rs1(14) ## rs1(15) ## rs1(16) ## rs1(17) ## rs1(18) ## rs1(19) ## rs1(20) ## rs1(21) ## rs1(22) ## rs1(23) ## rs1(24) ## rs1(25) ## rs1(26) ## rs1(27) ## rs1(28) ## rs1(29) ## rs1(30) ## rs1(31)
|
||||
val rs1rs = rs1r |>> (31-msb)
|
||||
|
||||
rs1rs // return value
|
||||
}
|
||||
|
||||
// this is trying to look like DOI 10.2478/jee-2015-0054
|
||||
def fun_clz_NLCi(x:Bits): Bits = {
|
||||
val r2 = (~(x(0) | x(1) | x(2) | x(3)))
|
||||
val r1 = (~(x(2) | x(3)))
|
||||
val r0 = (~(x(3) | (x(1) & ~x(2))))
|
||||
val r = r2 ## r1 ## r0
|
||||
r // return value
|
||||
}
|
||||
def fun_clz_byte(in: Bits): Bits = {
|
||||
val nlc1 = fun_clz_NLCi(in( 7 downto 4))
|
||||
val nlc0 = fun_clz_NLCi(in( 3 downto 0))
|
||||
val x = ((nlc1(2).asUInt === 1) ? (4 + nlc0(1 downto 0).asUInt) | (nlc1(1 downto 0).asUInt))
|
||||
val y = B"8'x08"
|
||||
((nlc0(2).asUInt === 1) && (nlc1(2).asUInt === 1)) ? y | x.asBits.resize(8) // return value
|
||||
}
|
||||
def fun_clrs8(rs1: Bits) : Bits = {
|
||||
val b0 = rs1( 7 downto 0)
|
||||
val b1 = rs1(15 downto 8)
|
||||
val b2 = rs1(23 downto 16)
|
||||
val b3 = rs1(31 downto 24)
|
||||
|
||||
val b0s = (b0(7).asUInt === 1) ? (~b0) | (b0)
|
||||
val b1s = (b1(7).asUInt === 1) ? (~b1) | (b1)
|
||||
val b2s = (b2(7).asUInt === 1) ? (~b2) | (b2)
|
||||
val b3s = (b3(7).asUInt === 1) ? (~b3) | (b3)
|
||||
|
||||
val c0 = fun_clz_byte(b0s).asUInt - 1
|
||||
val c1 = fun_clz_byte(b1s).asUInt - 1
|
||||
val c2 = fun_clz_byte(b2s).asUInt - 1
|
||||
val c3 = fun_clz_byte(b3s).asUInt - 1
|
||||
|
||||
c3.asBits.resize(8) ## c2.asBits.resize(8) ## c1.asBits.resize(8) ## c0.asBits.resize(8) // return value
|
||||
}
|
||||
def fun_clo8(rs1: Bits) : Bits = {
|
||||
val b0 = rs1( 7 downto 0)
|
||||
val b1 = rs1(15 downto 8)
|
||||
val b2 = rs1(23 downto 16)
|
||||
val b3 = rs1(31 downto 24)
|
||||
|
||||
val c0 = fun_clz_byte(~b0)
|
||||
val c1 = fun_clz_byte(~b1)
|
||||
val c2 = fun_clz_byte(~b2)
|
||||
val c3 = fun_clz_byte(~b3)
|
||||
|
||||
c3 ## c2 ## c1 ## c0 // return value
|
||||
}
|
||||
def fun_clz8(rs1: Bits) : Bits = {
|
||||
val b0 = rs1( 7 downto 0)
|
||||
val b1 = rs1(15 downto 8)
|
||||
val b2 = rs1(23 downto 16)
|
||||
val b3 = rs1(31 downto 24)
|
||||
|
||||
val c0 = fun_clz_byte(b0)
|
||||
val c1 = fun_clz_byte(b1)
|
||||
val c2 = fun_clz_byte(b2)
|
||||
val c3 = fun_clz_byte(b3)
|
||||
|
||||
c3 ## c2 ## c1 ## c0 // return value
|
||||
}
|
||||
|
||||
def fun_swap8(rs1: Bits) : Bits = {
|
||||
val b0 = rs1( 7 downto 0)
|
||||
val b1 = rs1(15 downto 8)
|
||||
val b2 = rs1(23 downto 16)
|
||||
val b3 = rs1(31 downto 24)
|
||||
|
||||
b2 ## b3 ## b0 ## b1 // return value
|
||||
}
|
||||
def fun_swap16(rs1: Bits) : Bits = {
|
||||
val h0 = rs1(15 downto 0)
|
||||
val h1 = rs1(31 downto 16)
|
||||
|
||||
h0 ## h1 // return value
|
||||
}
|
||||
|
||||
|
||||
def fun_cmpeq8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = (rs1( 7 downto 0).asUInt === rs2( 7 downto 0).asUInt) ? B"8'xFF" | B"8'x00"
|
||||
val b1 = (rs1(15 downto 8).asUInt === rs2(15 downto 8).asUInt) ? B"8'xFF" | B"8'x00"
|
||||
val b2 = (rs1(23 downto 16).asUInt === rs2(23 downto 16).asUInt) ? B"8'xFF" | B"8'x00"
|
||||
val b3 = (rs1(31 downto 24).asUInt === rs2(31 downto 24).asUInt) ? B"8'xFF" | B"8'x00"
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_cmpeq16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val h0 = (rs1(15 downto 0).asUInt === rs2(15 downto 0).asUInt) ? B"16'xFFFF" | B"16'x0000"
|
||||
val h1 = (rs1(31 downto 16).asUInt === rs2(31 downto 16).asUInt) ? B"16'xFFFF" | B"16'x0000"
|
||||
|
||||
h1 ## h0 // return value
|
||||
}
|
||||
def fun_pkbbtt16(rs1: Bits, rs2: Bits, h:UInt, l:UInt) : Bits = {
|
||||
val hr = (h === 0) ? rs1(15 downto 0) | rs1(31 downto 16)
|
||||
val hl = (l === 0) ? rs2(15 downto 0) | rs2(31 downto 16)
|
||||
|
||||
hr ## hl // return value
|
||||
}
|
||||
|
||||
|
||||
def fun_scmple8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = (rs1( 7 downto 0).asSInt <= rs2( 7 downto 0).asSInt) ? B"8'xFF" | B"8'x00"
|
||||
val b1 = (rs1(15 downto 8).asSInt <= rs2(15 downto 8).asSInt) ? B"8'xFF" | B"8'x00"
|
||||
val b2 = (rs1(23 downto 16).asSInt <= rs2(23 downto 16).asSInt) ? B"8'xFF" | B"8'x00"
|
||||
val b3 = (rs1(31 downto 24).asSInt <= rs2(31 downto 24).asSInt) ? B"8'xFF" | B"8'x00"
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_scmple16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val h0 = (rs1(15 downto 0).asSInt <= rs2(15 downto 0).asSInt) ? B"16'xFFFF" | B"16'x0000"
|
||||
val h1 = (rs1(31 downto 16).asSInt <= rs2(31 downto 16).asSInt) ? B"16'xFFFF" | B"16'x0000"
|
||||
|
||||
h1 ## h0 // return value
|
||||
}
|
||||
def fun_scmplt8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = (rs1( 7 downto 0).asSInt < rs2( 7 downto 0).asSInt) ? B"8'xFF" | B"8'x00"
|
||||
val b1 = (rs1(15 downto 8).asSInt < rs2(15 downto 8).asSInt) ? B"8'xFF" | B"8'x00"
|
||||
val b2 = (rs1(23 downto 16).asSInt < rs2(23 downto 16).asSInt) ? B"8'xFF" | B"8'x00"
|
||||
val b3 = (rs1(31 downto 24).asSInt < rs2(31 downto 24).asSInt) ? B"8'xFF" | B"8'x00"
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_scmplt16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val h0 = (rs1(15 downto 0).asSInt < rs2(15 downto 0).asSInt) ? B"16'xFFFF" | B"16'x0000"
|
||||
val h1 = (rs1(31 downto 16).asSInt < rs2(31 downto 16).asSInt) ? B"16'xFFFF" | B"16'x0000"
|
||||
|
||||
h1 ## h0 // return value
|
||||
}
|
||||
def fun_ucmple8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = (rs1( 7 downto 0).asUInt <= rs2( 7 downto 0).asUInt) ? B"8'xFF" | B"8'x00"
|
||||
val b1 = (rs1(15 downto 8).asUInt <= rs2(15 downto 8).asUInt) ? B"8'xFF" | B"8'x00"
|
||||
val b2 = (rs1(23 downto 16).asUInt <= rs2(23 downto 16).asUInt) ? B"8'xFF" | B"8'x00"
|
||||
val b3 = (rs1(31 downto 24).asUInt <= rs2(31 downto 24).asUInt) ? B"8'xFF" | B"8'x00"
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_ucmple16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val h0 = (rs1(15 downto 0).asUInt <= rs2(15 downto 0).asUInt) ? B"16'xFFFF" | B"16'x0000"
|
||||
val h1 = (rs1(31 downto 16).asUInt <= rs2(31 downto 16).asUInt) ? B"16'xFFFF" | B"16'x0000"
|
||||
|
||||
h1 ## h0 // return value
|
||||
}
|
||||
def fun_ucmplt8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = (rs1( 7 downto 0).asUInt < rs2( 7 downto 0).asUInt) ? B"8'xFF" | B"8'x00"
|
||||
val b1 = (rs1(15 downto 8).asUInt < rs2(15 downto 8).asUInt) ? B"8'xFF" | B"8'x00"
|
||||
val b2 = (rs1(23 downto 16).asUInt < rs2(23 downto 16).asUInt) ? B"8'xFF" | B"8'x00"
|
||||
val b3 = (rs1(31 downto 24).asUInt < rs2(31 downto 24).asUInt) ? B"8'xFF" | B"8'x00"
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_ucmplt16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val h0 = (rs1(15 downto 0).asUInt < rs2(15 downto 0).asUInt) ? B"16'xFFFF" | B"16'x0000"
|
||||
val h1 = (rs1(31 downto 16).asUInt < rs2(31 downto 16).asUInt) ? B"16'xFFFF" | B"16'x0000"
|
||||
|
||||
h1 ## h0 // return value
|
||||
}
|
||||
|
||||
def fun_sll8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val o = rs2(2 downto 0).asUInt
|
||||
val b0 = rs1( 7 downto 0).asUInt |<< o
|
||||
val b1 = rs1(15 downto 8).asUInt |<< o
|
||||
val b2 = rs1(23 downto 16).asUInt |<< o
|
||||
val b3 = rs1(31 downto 24).asUInt |<< o
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_srl8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val o = rs2(2 downto 0).asUInt
|
||||
val b0 = rs1( 7 downto 0).asUInt |>> o
|
||||
val b1 = rs1(15 downto 8).asUInt |>> o
|
||||
val b2 = rs1(23 downto 16).asUInt |>> o
|
||||
val b3 = rs1(31 downto 24).asUInt |>> o
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_sra8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val o = rs2(2 downto 0).asUInt
|
||||
val b0 = rs1( 7 downto 0).asSInt |>> o
|
||||
val b1 = rs1(15 downto 8).asSInt |>> o
|
||||
val b2 = rs1(23 downto 16).asSInt |>> o
|
||||
val b3 = rs1(31 downto 24).asSInt |>> o
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_sll16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val o = rs2(3 downto 0).asUInt
|
||||
val h0 = rs1(15 downto 0).asUInt |<< o
|
||||
val h1 = rs1(31 downto 16).asUInt |<< o
|
||||
|
||||
h1 ## h0 // return value
|
||||
}
|
||||
def fun_srl16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val o = rs2(3 downto 0).asUInt
|
||||
val h0 = rs1(15 downto 0).asUInt |>> o
|
||||
val h1 = rs1(31 downto 16).asUInt |>> o
|
||||
|
||||
h1 ## h0 // return value
|
||||
}
|
||||
def fun_sra16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val o = rs2(3 downto 0).asUInt
|
||||
val h0 = rs1(15 downto 0).asSInt |>> o
|
||||
val h1 = rs1(31 downto 16).asSInt |>> o
|
||||
|
||||
h1 ## h0 // return value
|
||||
}
|
||||
|
||||
def fun_smax8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = (rs1( 7 downto 0).asSInt >= rs2( 7 downto 0).asSInt) ? rs1( 7 downto 0) | rs2( 7 downto 0)
|
||||
val b1 = (rs1(15 downto 8).asSInt >= rs2(15 downto 8).asSInt) ? rs1(15 downto 8) | rs2(15 downto 8)
|
||||
val b2 = (rs1(23 downto 16).asSInt >= rs2(23 downto 16).asSInt) ? rs1(23 downto 16) | rs2(23 downto 16)
|
||||
val b3 = (rs1(31 downto 24).asSInt >= rs2(31 downto 24).asSInt) ? rs1(31 downto 24) | rs2(31 downto 24)
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_smax16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val h0 = (rs1(15 downto 0).asSInt >= rs2(15 downto 0).asSInt) ? rs1(15 downto 0) | rs2(15 downto 0)
|
||||
val h1 = (rs1(31 downto 16).asSInt >= rs2(31 downto 16).asSInt) ? rs1(31 downto 16) | rs2(31 downto 16)
|
||||
|
||||
h1 ## h0 // return value
|
||||
}
|
||||
def fun_smin8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = (rs1( 7 downto 0).asSInt <= rs2( 7 downto 0).asSInt) ? rs1( 7 downto 0) | rs2( 7 downto 0)
|
||||
val b1 = (rs1(15 downto 8).asSInt <= rs2(15 downto 8).asSInt) ? rs1(15 downto 8) | rs2(15 downto 8)
|
||||
val b2 = (rs1(23 downto 16).asSInt <= rs2(23 downto 16).asSInt) ? rs1(23 downto 16) | rs2(23 downto 16)
|
||||
val b3 = (rs1(31 downto 24).asSInt <= rs2(31 downto 24).asSInt) ? rs1(31 downto 24) | rs2(31 downto 24)
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_smin16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val h0 = (rs1(15 downto 0).asSInt <= rs2(15 downto 0).asSInt) ? rs1(15 downto 0) | rs2(15 downto 0)
|
||||
val h1 = (rs1(31 downto 16).asSInt <= rs2(31 downto 16).asSInt) ? rs1(31 downto 16) | rs2(31 downto 16)
|
||||
|
||||
h1 ## h0 // return value
|
||||
}
|
||||
def fun_umax8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = (rs1( 7 downto 0).asUInt >= rs2( 7 downto 0).asUInt) ? rs1( 7 downto 0) | rs2( 7 downto 0)
|
||||
val b1 = (rs1(15 downto 8).asUInt >= rs2(15 downto 8).asUInt) ? rs1(15 downto 8) | rs2(15 downto 8)
|
||||
val b2 = (rs1(23 downto 16).asUInt >= rs2(23 downto 16).asUInt) ? rs1(23 downto 16) | rs2(23 downto 16)
|
||||
val b3 = (rs1(31 downto 24).asUInt >= rs2(31 downto 24).asUInt) ? rs1(31 downto 24) | rs2(31 downto 24)
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_umax16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val h0 = (rs1(15 downto 0).asUInt >= rs2(15 downto 0).asUInt) ? rs1(15 downto 0) | rs2(15 downto 0)
|
||||
val h1 = (rs1(31 downto 16).asUInt >= rs2(31 downto 16).asUInt) ? rs1(31 downto 16) | rs2(31 downto 16)
|
||||
|
||||
h1 ## h0 // return value
|
||||
}
|
||||
def fun_umin8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = (rs1( 7 downto 0).asUInt <= rs2( 7 downto 0).asUInt) ? rs1( 7 downto 0) | rs2( 7 downto 0)
|
||||
val b1 = (rs1(15 downto 8).asUInt <= rs2(15 downto 8).asUInt) ? rs1(15 downto 8) | rs2(15 downto 8)
|
||||
val b2 = (rs1(23 downto 16).asUInt <= rs2(23 downto 16).asUInt) ? rs1(23 downto 16) | rs2(23 downto 16)
|
||||
val b3 = (rs1(31 downto 24).asUInt <= rs2(31 downto 24).asUInt) ? rs1(31 downto 24) | rs2(31 downto 24)
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_umin16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val h0 = (rs1(15 downto 0).asUInt <= rs2(15 downto 0).asUInt) ? rs1(15 downto 0) | rs2(15 downto 0)
|
||||
val h1 = (rs1(31 downto 16).asUInt <= rs2(31 downto 16).asUInt) ? rs1(31 downto 16) | rs2(31 downto 16)
|
||||
|
||||
h1 ## h0 // return value
|
||||
}
|
||||
|
||||
def fun_sub8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = (rs1( 7 downto 0).asUInt - rs2( 7 downto 0).asUInt).asBits.resize(8)
|
||||
val b1 = (rs1(15 downto 8).asUInt - rs2(15 downto 8).asUInt).asBits.resize(8)
|
||||
val b2 = (rs1(23 downto 16).asUInt - rs2(23 downto 16).asUInt).asBits.resize(8)
|
||||
val b3 = (rs1(31 downto 24).asUInt - rs2(31 downto 24).asUInt).asBits.resize(8)
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_sub16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val h0 = (rs1(15 downto 0).asUInt - rs2(15 downto 0).asUInt).asBits.resize(16)
|
||||
val h1 = (rs1(31 downto 16).asUInt - rs2(31 downto 16).asUInt).asBits.resize(16)
|
||||
|
||||
h1 ## h0 // return value
|
||||
}
|
||||
|
||||
def fun_uradd8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = ((B"1'b0" ## rs1( 7 downto 0)).asUInt + (B"1'b0" ## rs2( 7 downto 0)).asUInt).asBits.resize(9)
|
||||
val b1 = ((B"1'b0" ## rs1(15 downto 8)).asUInt + (B"1'b0" ## rs2(15 downto 8)).asUInt).asBits.resize(9)
|
||||
val b2 = ((B"1'b0" ## rs1(23 downto 16)).asUInt + (B"1'b0" ## rs2(23 downto 16)).asUInt).asBits.resize(9)
|
||||
val b3 = ((B"1'b0" ## rs1(31 downto 24)).asUInt + (B"1'b0" ## rs2(31 downto 24)).asUInt).asBits.resize(9)
|
||||
|
||||
b3(8 downto 1) ## b2(8 downto 1) ## b1(8 downto 1) ## b0(8 downto 1) // return value
|
||||
}
|
||||
def fun_ursub8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = ((B"1'b0" ## rs1( 7 downto 0)).asUInt - (B"1'b0" ## rs2( 7 downto 0)).asUInt).asBits.resize(9)
|
||||
val b1 = ((B"1'b0" ## rs1(15 downto 8)).asUInt - (B"1'b0" ## rs2(15 downto 8)).asUInt).asBits.resize(9)
|
||||
val b2 = ((B"1'b0" ## rs1(23 downto 16)).asUInt - (B"1'b0" ## rs2(23 downto 16)).asUInt).asBits.resize(9)
|
||||
val b3 = ((B"1'b0" ## rs1(31 downto 24)).asUInt - (B"1'b0" ## rs2(31 downto 24)).asUInt).asBits.resize(9)
|
||||
|
||||
b3(8 downto 1) ## b2(8 downto 1) ## b1(8 downto 1) ## b0(8 downto 1) // return value
|
||||
}
|
||||
def fun_uradd16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val h0 = ((B"1'b0" ## rs1(15 downto 0)).asUInt + (B"1'b0" ## rs2(15 downto 0)).asUInt).asBits.resize(17)
|
||||
val h1 = ((B"1'b0" ## rs1(31 downto 16)).asUInt + (B"1'b0" ## rs2(31 downto 16)).asUInt).asBits.resize(17)
|
||||
|
||||
h1(16 downto 1) ## h0(16 downto 1) // return value
|
||||
}
|
||||
def fun_ursub16(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val h0 = ((B"1'b0" ## rs1(15 downto 0)).asUInt - (B"1'b0" ## rs2(15 downto 0)).asUInt).asBits.resize(17)
|
||||
val h1 = ((B"1'b0" ## rs1(31 downto 16)).asUInt - (B"1'b0" ## rs2(31 downto 16)).asUInt).asBits.resize(17)
|
||||
|
||||
h1(16 downto 1) ## h0(16 downto 1) // return value
|
||||
}
|
||||
def fun_uradd32(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val s = ((B"1'b0" ## rs1).asUInt + (B"1'b0" ## rs2).asUInt).asBits.resize(33)
|
||||
|
||||
s(32 downto 1) // return value
|
||||
}
|
||||
def fun_ursub32(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val s = ((B"1'b0" ## rs1).asUInt - (B"1'b0" ## rs2).asUInt).asBits.resize(33)
|
||||
|
||||
s(32 downto 1) // return value
|
||||
}
|
||||
|
||||
def fun_pbsada(rs1: Bits, rs2: Bits, rs3: Bits) : Bits = {
|
||||
// zero-extend to handle as unsigned
|
||||
val b0 = ((B"1'b0" ## rs1( 7 downto 0)).asSInt - (B"1'b0" ## rs2( 7 downto 0)).asSInt)
|
||||
val b1 = ((B"1'b0" ## rs1(15 downto 8)).asSInt - (B"1'b0" ## rs2(15 downto 8)).asSInt)
|
||||
val b2 = ((B"1'b0" ## rs1(23 downto 16)).asSInt - (B"1'b0" ## rs2(23 downto 16)).asSInt)
|
||||
val b3 = ((B"1'b0" ## rs1(31 downto 24)).asSInt - (B"1'b0" ## rs2(31 downto 24)).asSInt)
|
||||
|
||||
val sum = rs3.asUInt + b0.abs + b1.abs + b2.abs + b3.abs
|
||||
|
||||
sum.asBits.resize(32) // return value
|
||||
}
|
||||
|
||||
def fun_insb(rs1: Bits, rs2: Bits, rs3: Bits) : Bits = {
|
||||
val idx = rs2(1 downto 0).asUInt
|
||||
val b = rs1(7 downto 0)
|
||||
val r = (idx).mux(
|
||||
0 -> rs3(31 downto 8) ## b,
|
||||
1 -> rs3(31 downto 16) ## b ## rs3( 7 downto 0),
|
||||
2 -> rs3(31 downto 24) ## b ## rs3(15 downto 0),
|
||||
3 -> b ## rs3(23 downto 0)
|
||||
)
|
||||
r // return value
|
||||
}
|
||||
|
||||
def fun_smaqa(rs1: Bits, rs2: Bits, rs3: Bits) : Bits = {
|
||||
val h0 = (rs1( 7 downto 0).asSInt * rs2( 7 downto 0).asSInt).resize(18)
|
||||
val h1 = (rs1(15 downto 8).asSInt * rs2(15 downto 8).asSInt).resize(18)
|
||||
val h2 = (rs1(23 downto 16).asSInt * rs2(23 downto 16).asSInt).resize(18)
|
||||
val h3 = (rs1(31 downto 24).asSInt * rs2(31 downto 24).asSInt).resize(18)
|
||||
val r = rs3.asSInt + (h0 + h1 + h2 + h3)
|
||||
|
||||
r.asBits.resize(32) // return value
|
||||
}
|
||||
def fun_umaqa(rs1: Bits, rs2: Bits, rs3: Bits) : Bits = {
|
||||
// 18 bits needed so that intermediate sums don't overflow
|
||||
val h0 = (rs1( 7 downto 0).asUInt * rs2( 7 downto 0).asUInt).resize(18)
|
||||
val h1 = (rs1(15 downto 8).asUInt * rs2(15 downto 8).asUInt).resize(18)
|
||||
val h2 = (rs1(23 downto 16).asUInt * rs2(23 downto 16).asUInt).resize(18)
|
||||
val h3 = (rs1(31 downto 24).asUInt * rs2(31 downto 24).asUInt).resize(18)
|
||||
val r = rs3.asUInt + (h0 + h1 + h2 + h3)
|
||||
|
||||
r.asBits.resize(32) // return value
|
||||
}
|
||||
|
||||
def fun_zunpkd8(rs1: Bits, ctrl: Bits) : Bits = {
|
||||
val r = (ctrl).mux(
|
||||
default -> rs1(15 downto 8).resize(16) ## rs1( 7 downto 0).resize(16), // B"4'b0100"
|
||||
B"4'b0101" -> rs1(23 downto 16).resize(16) ## rs1( 7 downto 0).resize(16),
|
||||
B"4'b0110" -> rs1(31 downto 24).resize(16) ## rs1( 7 downto 0).resize(16),
|
||||
B"4'b0111" -> rs1(31 downto 24).resize(16) ## rs1(15 downto 8).resize(16),
|
||||
B"4'b1011" -> rs1(31 downto 24).resize(16) ## rs1(23 downto 16).resize(16)
|
||||
)
|
||||
r // return value
|
||||
}
|
||||
def fun_sunpkd8(rs1: Bits, ctrl: Bits) : Bits = {
|
||||
val r = (ctrl).mux(
|
||||
default -> rs1(15 downto 8).asSInt.resize(16).asBits ## rs1( 7 downto 0).asSInt.resize(16).asBits, // B"4'b0100"
|
||||
B"4'b0101" -> rs1(23 downto 16).asSInt.resize(16).asBits ## rs1( 7 downto 0).asSInt.resize(16).asBits,
|
||||
B"4'b0110" -> rs1(31 downto 24).asSInt.resize(16).asBits ## rs1( 7 downto 0).asSInt.resize(16).asBits,
|
||||
B"4'b0111" -> rs1(31 downto 24).asSInt.resize(16).asBits ## rs1(15 downto 8).asSInt.resize(16).asBits,
|
||||
B"4'b1011" -> rs1(31 downto 24).asSInt.resize(16).asBits ## rs1(23 downto 16).asSInt.resize(16).asBits
|
||||
)
|
||||
r // return value
|
||||
}
|
||||
|
||||
// saturating, csr is missing
|
||||
// it seems sat() (and its shortcut +| and -|) in SpinalHDL don't do what I need
|
||||
// for unsigned substraction (no way to tell the difference between overflow
|
||||
// and underflow unless going signed, I think)
|
||||
def fun_satsub8u(a: Bits, b: Bits) : Bits = {
|
||||
val s = (B"1'b0" ## a).asSInt -^ (B"1'b0" ## b).asSInt // -^ will keep 10 bits
|
||||
// if sign bit set -> underflow, else if bit eight set -> overflow
|
||||
val r = ((s(9).asUInt === 1) ? (B"8'x00") | ((s(8).asUInt === 1) ? (B"8'xFF") | (s(7 downto 0).asBits)))
|
||||
|
||||
r // return value
|
||||
}
|
||||
|
||||
def fun_kadd8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = (rs1( 7 downto 0).asSInt +| rs2( 7 downto 0).asSInt).asBits.resize(8)
|
||||
val b1 = (rs1(15 downto 8).asSInt +| rs2(15 downto 8).asSInt).asBits.resize(8)
|
||||
val b2 = (rs1(23 downto 16).asSInt +| rs2(23 downto 16).asSInt).asBits.resize(8)
|
||||
val b3 = (rs1(31 downto 24).asSInt +| rs2(31 downto 24).asSInt).asBits.resize(8)
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_ukadd8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = (rs1( 7 downto 0).asUInt +| rs2( 7 downto 0).asUInt).asBits.resize(8)
|
||||
val b1 = (rs1(15 downto 8).asUInt +| rs2(15 downto 8).asUInt).asBits.resize(8)
|
||||
val b2 = (rs1(23 downto 16).asUInt +| rs2(23 downto 16).asUInt).asBits.resize(8)
|
||||
val b3 = (rs1(31 downto 24).asUInt +| rs2(31 downto 24).asUInt).asBits.resize(8)
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_ksub8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = (rs1( 7 downto 0).asSInt -| rs2( 7 downto 0).asSInt).asBits.resize(8)
|
||||
val b1 = (rs1(15 downto 8).asSInt -| rs2(15 downto 8).asSInt).asBits.resize(8)
|
||||
val b2 = (rs1(23 downto 16).asSInt -| rs2(23 downto 16).asSInt).asBits.resize(8)
|
||||
val b3 = (rs1(31 downto 24).asSInt -| rs2(31 downto 24).asSInt).asBits.resize(8)
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
def fun_uksub8(rs1: Bits, rs2: Bits) : Bits = {
|
||||
val b0 = fun_satsub8u(rs1( 7 downto 0), rs2( 7 downto 0)).asBits
|
||||
val b1 = fun_satsub8u(rs1(15 downto 8), rs2(15 downto 8)).asBits
|
||||
val b2 = fun_satsub8u(rs1(23 downto 16), rs2(23 downto 16)).asBits
|
||||
val b3 = fun_satsub8u(rs1(31 downto 24), rs2(31 downto 24)).asBits
|
||||
|
||||
b3 ## b2 ## b1 ## b0 // return value
|
||||
}
|
||||
|
||||
// End prologue
|
||||
} // object Plugin
|
||||
class GoblinPlugin(earlyInjection : Boolean = true) extends Plugin[VexRiscv] {
|
||||
import GoblinPlugin._
|
||||
object IS_Goblin extends Stageable(Bool)
|
||||
object Goblin_FINAL_OUTPUT extends Stageable(Bits(32 bits))
|
||||
override def setup(pipeline: VexRiscv): Unit = {
|
||||
import pipeline.config._
|
||||
val immediateActions = List[(Stageable[_ <: BaseType],Any)](
|
||||
SRC1_CTRL -> Src1CtrlEnum.RS,
|
||||
SRC2_CTRL -> Src2CtrlEnum.IMI,
|
||||
REGFILE_WRITE_VALID -> True,
|
||||
BYPASSABLE_EXECUTE_STAGE -> Bool(earlyInjection),
|
||||
BYPASSABLE_MEMORY_STAGE -> True,
|
||||
RS1_USE -> True,
|
||||
IS_Goblin -> True
|
||||
)
|
||||
val binaryActions = List[(Stageable[_ <: BaseType],Any)](
|
||||
SRC1_CTRL -> Src1CtrlEnum.RS,
|
||||
SRC2_CTRL -> Src2CtrlEnum.RS,
|
||||
REGFILE_WRITE_VALID -> True,
|
||||
BYPASSABLE_EXECUTE_STAGE -> Bool(earlyInjection),
|
||||
BYPASSABLE_MEMORY_STAGE -> True,
|
||||
RS1_USE -> True,
|
||||
RS2_USE -> True,
|
||||
IS_Goblin -> True
|
||||
)
|
||||
val unaryActions = List[(Stageable[_ <: BaseType],Any)](
|
||||
SRC1_CTRL -> Src1CtrlEnum.RS,
|
||||
REGFILE_WRITE_VALID -> True,
|
||||
BYPASSABLE_EXECUTE_STAGE -> Bool(earlyInjection),
|
||||
BYPASSABLE_MEMORY_STAGE -> True,
|
||||
RS1_USE -> True,
|
||||
IS_Goblin -> True
|
||||
)
|
||||
val ternaryActions = List[(Stageable[_ <: BaseType],Any)](
|
||||
SRC1_CTRL -> Src1CtrlEnum.RS,
|
||||
SRC2_CTRL -> Src2CtrlEnum.RS,
|
||||
SRC3_CTRL -> Src3CtrlEnum.RS,
|
||||
REGFILE_WRITE_VALID -> True,
|
||||
BYPASSABLE_EXECUTE_STAGE -> Bool(earlyInjection),
|
||||
BYPASSABLE_MEMORY_STAGE -> True,
|
||||
RS1_USE -> True,
|
||||
RS2_USE -> True,
|
||||
RS3_USE -> True,
|
||||
IS_Goblin -> True
|
||||
)
|
||||
val immTernaryActions = List[(Stageable[_ <: BaseType],Any)](
|
||||
SRC1_CTRL -> Src1CtrlEnum.RS,
|
||||
SRC2_CTRL -> Src2CtrlEnum.IMI,
|
||||
SRC3_CTRL -> Src3CtrlEnum.RS,
|
||||
REGFILE_WRITE_VALID -> True,
|
||||
BYPASSABLE_EXECUTE_STAGE -> Bool(earlyInjection),
|
||||
BYPASSABLE_MEMORY_STAGE -> True,
|
||||
RS1_USE -> True,
|
||||
RS3_USE -> True,
|
||||
IS_Goblin -> True
|
||||
)
|
||||
def UKADD8_KEY = M"0011100----------000-----1110111"
|
||||
def UKSUB8_KEY = M"0011101----------000-----1110111"
|
||||
val decoderService = pipeline.service(classOf[DecoderService])
|
||||
decoderService.addDefault(IS_Goblin, False)
|
||||
decoderService.add(List(
|
||||
UKADD8_KEY -> (binaryActions ++ List(GoblinCtrl -> GoblinCtrlEnum.CTRL_pdpikadd8, GoblinCtrlpdpikadd8 -> GoblinCtrlpdpikadd8Enum.CTRL_UKADD8)),
|
||||
UKSUB8_KEY -> (binaryActions ++ List(GoblinCtrl -> GoblinCtrlEnum.CTRL_pdpikadd8, GoblinCtrlpdpikadd8 -> GoblinCtrlpdpikadd8Enum.CTRL_UKSUB8))
|
||||
))
|
||||
} // override def setup
|
||||
override def build(pipeline: VexRiscv): Unit = {
|
||||
import pipeline._
|
||||
import pipeline.config._
|
||||
execute plug new Area{
|
||||
import execute._
|
||||
val val_pdpikadd8 = input(GoblinCtrlpdpikadd8).mux(
|
||||
GoblinCtrlpdpikadd8Enum.CTRL_UKADD8 -> fun_ukadd8(input(SRC1), input(SRC2)).asBits,
|
||||
GoblinCtrlpdpikadd8Enum.CTRL_UKSUB8 -> fun_uksub8(input(SRC1), input(SRC2)).asBits
|
||||
) // mux pdpikadd8
|
||||
insert(Goblin_FINAL_OUTPUT) := val_pdpikadd8.asBits
|
||||
} // execute plug newArea
|
||||
val injectionStage = if(earlyInjection) execute else memory
|
||||
injectionStage plug new Area {
|
||||
import injectionStage._
|
||||
when (arbitration.isValid && input(IS_Goblin)) {
|
||||
output(REGFILE_WRITE_DATA) := input(Goblin_FINAL_OUTPUT)
|
||||
} // when input is
|
||||
} // injectionStage plug newArea
|
||||
} // override def build
|
||||
} // class Plugin
|
||||
@ -1,144 +0,0 @@
|
||||
// WARNING: this is auto-generated code!
|
||||
// See https://github.com/rdolbeau/VexRiscvBPluginGenerator/
|
||||
package vexriscv.plugin
|
||||
import spinal.core._
|
||||
import vexriscv.{Stageable, DecoderService, VexRiscv}
|
||||
object Goblin2cPlugin {
|
||||
object Goblin2cCtrlEnum extends SpinalEnum(binarySequential) {
|
||||
val CTRL_UFMA8VxV = newElement()
|
||||
}
|
||||
object Goblin2cCtrl extends Stageable(Goblin2cCtrlEnum())
|
||||
// Prologue
|
||||
|
||||
def fun_ufma8vxv(rs1: Bits, rs2: Bits, rs3: Bits, low: Bool) : Bits = {
|
||||
val al = low ? rs2( 7 downto 0) | rs2(31 downto 24)
|
||||
|
||||
val h0 = (rs1( 7 downto 0).asUInt * al.asUInt).asBits
|
||||
val h1 = (rs1(15 downto 8).asUInt * al.asUInt).asBits
|
||||
val h2 = (rs1(23 downto 16).asUInt * al.asUInt).asBits
|
||||
val h3 = (rs1(31 downto 24).asUInt * al.asUInt).asBits
|
||||
|
||||
//rs3 ## h3(15 downto 8) ## h2(15 downto 8) ## h1(15 downto 8) ## h0(15 downto 8) // return value
|
||||
|
||||
//var r0 = ((h0 ## B"8'x00").asUInt + h0.asUInt + h0(15 downto 7).asUInt).asBits
|
||||
//var r1 = ((h1 ## B"8'x00").asUInt + h1.asUInt + h1(15 downto 7).asUInt).asBits
|
||||
//var r2 = ((h2 ## B"8'x00").asUInt + h2.asUInt + h2(15 downto 7).asUInt).asBits
|
||||
//var r3 = ((h3 ## B"8'x00").asUInt + h3.asUInt + h3(15 downto 7).asUInt).asBits
|
||||
|
||||
//rs3 ## r3(23 downto 16) ## r2(23 downto 16) ## r1(23 downto 16) ## r0(23 downto 16) // return value
|
||||
|
||||
rs3 ## h3 ## h2 ## h1 ## h0
|
||||
}
|
||||
|
||||
def fun_ufma8vxv2(input: Bits) : Bits = {
|
||||
//val rs3 = input(63 downto 32)
|
||||
val rs3 = input(95 downto 64)
|
||||
val h3 = input(63 downto 48)
|
||||
val h2 = input(47 downto 32)
|
||||
val h1 = input(31 downto 16)
|
||||
val h0 = input(15 downto 0)
|
||||
|
||||
var r0 = ((h0 ## B"8'x00").asUInt + h0.asUInt + h0(15 downto 7).asUInt).asBits
|
||||
var r1 = ((h1 ## B"8'x00").asUInt + h1.asUInt + h1(15 downto 7).asUInt).asBits
|
||||
var r2 = ((h2 ## B"8'x00").asUInt + h2.asUInt + h2(15 downto 7).asUInt).asBits
|
||||
var r3 = ((h3 ## B"8'x00").asUInt + h3.asUInt + h3(15 downto 7).asUInt).asBits
|
||||
|
||||
//val f0 = (input( 7 downto 0).asUInt +| rs3( 7 downto 0).asUInt).asBits.resize(8)
|
||||
//val f1 = (input(15 downto 8).asUInt +| rs3(15 downto 8).asUInt).asBits.resize(8)
|
||||
//val f2 = (input(23 downto 16).asUInt +| rs3(23 downto 16).asUInt).asBits.resize(8)
|
||||
//val f3 = (input(31 downto 24).asUInt +| rs3(31 downto 24).asUInt).asBits.resize(8)
|
||||
|
||||
val f0 = (r0(23 downto 16).asUInt +| rs3( 7 downto 0).asUInt).asBits.resize(8)
|
||||
val f1 = (r1(23 downto 16).asUInt +| rs3(15 downto 8).asUInt).asBits.resize(8)
|
||||
val f2 = (r2(23 downto 16).asUInt +| rs3(23 downto 16).asUInt).asBits.resize(8)
|
||||
val f3 = (r3(23 downto 16).asUInt +| rs3(31 downto 24).asUInt).asBits.resize(8)
|
||||
|
||||
f3 ## f2 ## f1 ## f0 // return value
|
||||
}
|
||||
|
||||
// End prologue
|
||||
} // object Plugin
|
||||
class Goblin2cPlugin(earlyInjection : Boolean = true) extends Plugin[VexRiscv] {
|
||||
import Goblin2cPlugin._
|
||||
object IS_Goblin2c extends Stageable(Bool)
|
||||
object Goblin2c_FINAL_OUTPUT extends Stageable(Bits(32 bits))
|
||||
object Goblin2c_INTERMEDIATE_UFMA8VxV96 extends Stageable(Bits(96 bits))
|
||||
override def setup(pipeline: VexRiscv): Unit = {
|
||||
import pipeline.config._
|
||||
val immediateActions = List[(Stageable[_ <: BaseType],Any)](
|
||||
SRC1_CTRL -> Src1CtrlEnum.RS,
|
||||
SRC2_CTRL -> Src2CtrlEnum.IMI,
|
||||
REGFILE_WRITE_VALID -> True,
|
||||
BYPASSABLE_EXECUTE_STAGE -> False,
|
||||
BYPASSABLE_MEMORY_STAGE -> Bool(earlyInjection),
|
||||
RS1_USE -> True,
|
||||
IS_Goblin2c -> True
|
||||
)
|
||||
val binaryActions = List[(Stageable[_ <: BaseType],Any)](
|
||||
SRC1_CTRL -> Src1CtrlEnum.RS,
|
||||
SRC2_CTRL -> Src2CtrlEnum.RS,
|
||||
REGFILE_WRITE_VALID -> True,
|
||||
BYPASSABLE_EXECUTE_STAGE -> False,
|
||||
BYPASSABLE_MEMORY_STAGE -> Bool(earlyInjection),
|
||||
RS1_USE -> True,
|
||||
RS2_USE -> True,
|
||||
IS_Goblin2c -> True
|
||||
)
|
||||
val unaryActions = List[(Stageable[_ <: BaseType],Any)](
|
||||
SRC1_CTRL -> Src1CtrlEnum.RS,
|
||||
REGFILE_WRITE_VALID -> True,
|
||||
BYPASSABLE_EXECUTE_STAGE -> False,
|
||||
BYPASSABLE_MEMORY_STAGE -> Bool(earlyInjection),
|
||||
RS1_USE -> True,
|
||||
IS_Goblin2c -> True
|
||||
)
|
||||
val ternaryActions = List[(Stageable[_ <: BaseType],Any)](
|
||||
SRC1_CTRL -> Src1CtrlEnum.RS,
|
||||
SRC2_CTRL -> Src2CtrlEnum.RS,
|
||||
SRC3_CTRL -> Src3CtrlEnum.RS,
|
||||
REGFILE_WRITE_VALID -> True,
|
||||
BYPASSABLE_EXECUTE_STAGE -> False,
|
||||
BYPASSABLE_MEMORY_STAGE -> Bool(earlyInjection),
|
||||
RS1_USE -> True,
|
||||
RS2_USE -> True,
|
||||
RS3_USE -> True,
|
||||
IS_Goblin2c -> True
|
||||
)
|
||||
val immTernaryActions = List[(Stageable[_ <: BaseType],Any)](
|
||||
SRC1_CTRL -> Src1CtrlEnum.RS,
|
||||
SRC2_CTRL -> Src2CtrlEnum.IMI,
|
||||
SRC3_CTRL -> Src3CtrlEnum.RS,
|
||||
REGFILE_WRITE_VALID -> True,
|
||||
BYPASSABLE_EXECUTE_STAGE -> False,
|
||||
BYPASSABLE_MEMORY_STAGE -> Bool(earlyInjection),
|
||||
RS1_USE -> True,
|
||||
RS3_USE -> True,
|
||||
IS_Goblin2c -> True
|
||||
)
|
||||
def UFMA8VxV_KEY = M"11001-0----------000----01110111"
|
||||
val decoderService = pipeline.service(classOf[DecoderService])
|
||||
decoderService.addDefault(IS_Goblin2c, False)
|
||||
decoderService.add(List(
|
||||
UFMA8VxV_KEY -> (ternaryActions ++ List(Goblin2cCtrl -> Goblin2cCtrlEnum.CTRL_UFMA8VxV))
|
||||
))
|
||||
} // override def setup
|
||||
override def build(pipeline: VexRiscv): Unit = {
|
||||
import pipeline._
|
||||
import pipeline.config._
|
||||
execute plug new Area{
|
||||
import execute._
|
||||
insert(Goblin2c_INTERMEDIATE_UFMA8VxV96) := fun_ufma8vxv(input(SRC1), input(SRC2), input(SRC3), (input(INSTRUCTION)(26).asUInt === 1)).asBits
|
||||
} // execute plug newArea
|
||||
memory plug new Area{
|
||||
import memory._
|
||||
insert(Goblin2c_FINAL_OUTPUT) := fun_ufma8vxv2(input(Goblin2c_INTERMEDIATE_UFMA8VxV96)).asBits
|
||||
} // memory plug newArea
|
||||
val injectionStage = if(earlyInjection) memory else writeBack
|
||||
injectionStage plug new Area {
|
||||
import injectionStage._
|
||||
when (arbitration.isValid && input(IS_Goblin2c)) {
|
||||
output(REGFILE_WRITE_DATA) := input(Goblin2c_FINAL_OUTPUT)
|
||||
} // when input is
|
||||
} // injectionStage plug newArea
|
||||
} // override def build
|
||||
} // class Plugin
|
||||
Loading…
Reference in New Issue
Block a user