From c9e039986701214b438ab47b5e092d1e4915aa73 Mon Sep 17 00:00:00 2001 From: Luke Kenneth Casson Leighton Date: Sun, 4 Aug 2019 08:38:48 +0100 Subject: [PATCH] remove uneeded dividers --- rv_major_opcode_1010011.mdwn | 24 ++++++++---------------- 1 file changed, 8 insertions(+), 16 deletions(-) diff --git a/rv_major_opcode_1010011.mdwn b/rv_major_opcode_1010011.mdwn index b6fa18b8f..6863a615c 100644 --- a/rv_major_opcode_1010011.mdwn +++ b/rv_major_opcode_1010011.mdwn @@ -1,6 +1,13 @@ # Summary FP Opcodes -* Zfrsqrt - Recip SQRT +This page aids and assists in the development of FP proposals, +by identifying and listing in full both publicly-known proposals +and the full brownfield encoding space available in the 0b010011 +major opcode. + +Publicly-known FP proposals: + +* Zfrsqrt - Reciprocal SQRT * Zftrans - Transcendentals (FSIN, FCOS, FATAN, FPOW, FEXP, FLOG, FRCP) * HI-half FP MV - @@ -13,7 +20,6 @@ Proposed new encodings in **bold** 31..27 | 26..25 | 24..20 |19..15| 14...12| 11..7 | 6....0 | function | funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 5 | 2 | 5 | 5 | 3 | 5 | 7 | | ------- | ----- | ----- | -----| ----- | ----- | ------- | -------- | 00000 | xx | rs2 | rs1 | rm | rd | 1010011 | FADD.xx | 00001 | xx | rs2 | rs1 | rm | rd | 1010011 | FSUB.xx | 00010 | xx | rs2 | rs1 | rm | rd | 1010011 | FMUL.xx | @@ -53,7 +59,6 @@ funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 31..27 | 26..25 | 24..20 |19..15| 14...12| 11..7 | 6....0 | function | funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 5 | 2 | 5 | 5 | 3 | 5 | 7 | | ------- | ----- | ----- | -----| ----- | ----- | ------- | -------- | 00100 | xx | rs2 | rs1 | 000 | rd | 1010011 | FSGNJ.xx | 00100 | xx | rs2 | rs1 | 001 | rd | 1010011 | FSGNJN.xx | 00100 | xx | rs2 | rs1 | 010 | rd | 1010011 | FSGNJX.xx | @@ -70,7 +75,6 @@ funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 31..27 | 26..25 | 24..20 |19..15| 14...12| 11..7 | 6....0 | function | funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 5 | 2 | 5 | 5 | 3 | 5 | 7 | | ------- | ----- | ----- | -----| ----- | ----- | ------- | -------- | 00101 | xx | rs2 | rs1 | 000 | rd | 1010011 | FMIN.S | 00101 | xx | rs2 | rs1 | 001 | rd | 1010011 | FMAX.S | 00101 | xx | rs2 | rs1 | 010 | rd | 1010011 | ?f3=010 | @@ -91,7 +95,6 @@ Notes: 31..27 | 26..25 | 24..20 |19..15| 14...12| 11..7 | 6....0 | function | funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 5 | 2 | 5 | 5 | 3 | 5 | 7 | | ------- | ----- | ----- | -----| ----- | ----- | ------- | -------- | 01000 | 00 | 00001 | rs1 | rm | rd | 1010011 | FCVT.S.D | 01000 | 00 | 00011 | rs1 | rm | rd | 1010011 | FCVT.S.Q | 01000 | 00 | xxxxx | rs1 | rm | rd | 1010011 | rs2? | @@ -103,7 +106,6 @@ funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 01000 | 11 | 00000 | rs1 | rm | rd | 1010011 | FCVT.Q.S | 01000 | 11 | 00001 | rs1 | rm | rd | 1010011 | FCVT.Q.D | 01000 | 11 | xxxxx | rs1 | rm | rd | 1010011 | rs2? | ------- | ----- | ----- | -----| ----- | ----- | ------- | -------- | """]] # funct5 = 01011 @@ -112,7 +114,6 @@ funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 31..27 | 26..25 | 24..20 |19..15| 14...12| 11..7 | 6....0 | function | funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 5 | 2 | 5 | 5 | 3 | 5 | 7 | | ------- | ----- | ----- | -----| ----- | ----- | ------- | -------- | 01011 | xx | 00000 | rs1 | yyy | rd | 1010011 | FSQRT.xx | 01011 | xx | 00001 | rs1 | yyy | rd | 1010011 | **FRSQRT.xx** | 01011 | xx | 00010 | rs1 | yyy | rd | 1010011 | **FSIN.xx** | @@ -157,7 +158,6 @@ Notes: 31..27 | 26..25 | 24..20 |19..15| 14...12| 11..7 | 6....0 | function | funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 5 | 2 | 5 | 5 | 3 | 5 | 7 | | ------- | ----- | ----- | -----| ----- | ----- | ------- | -------- | 10100 | xx | rs2 | rs1 | 000 | rd | 1010011 | FLE.xx | 10100 | xx | rs2 | rs1 | 001 | rd | 1010011 | FLT.xx | 10100 | xx | rs2 | rs1 | 010 | rd | 1010011 | FEQ.xx | @@ -178,7 +178,6 @@ Notes: 31..27 | 26..25 | 24..20 |19..15| 14...12| 11..7 | 6....0 | function | funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 5 | 2 | 5 | 5 | 3 | 5 | 7 | | ------- | ----- | ----- | -----| ----- | ----- | ------- | -------- | 11000 | 00 | 00000 | rs1 | rm | rd | 1010011 | FCVT.W.S | 11000 | 00 | 00001 | rs1 | rm | rd | 1010011 | FCVT.WU.S | 11000 | 00 | 00010 | rs1 | rm | rd | 1010011 | FCVT.L.S | @@ -196,7 +195,6 @@ funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 11000 | 11 | 00010 | rs1 | rm | rd | 1010011 | FCVT.L.Q | 11000 | 11 | 00011 | rs1 | rm | rd | 1010011 | FCVT.LU.Q | 11000 | 11 | xxxxx | rs1 | rm | rd | 1010011 | rs2? | ------- | ----- | ----- | -----| ----- | ----- | ------- | -------- | """]] # funct5 = 11010 @@ -205,7 +203,6 @@ funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 31..27 | 26..25 | 24..20 |19..15| 14...12| 11..7 | 6....0 | function | funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 5 | 2 | 5 | 5 | 3 | 5 | 7 | | ------- | ----- | ----- | -----| ----- | ----- | ------- | -------- | 11010 | 00 | 00000 | rs1 | rm | rd | 1010011 | FCVT.S.W | 11010 | 00 | 00001 | rs1 | rm | rd | 1010011 | FCVT.S.WU | 11010 | 00 | 00010 | rs1 | rm | rd | 1010011 | FCVT.S.L | @@ -223,7 +220,6 @@ funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 11010 | 11 | 00010 | rs1 | rm | rd | 1010011 | FCVT.Q.L | 11010 | 11 | 00011 | rs1 | rm | rd | 1010011 | FCVT.Q.LU | 11010 | 11 | xxxxx | rs1 | rm | rd | 1010011 | rs2? | ------- | ----- | ----- | -----| ----- | ----- | ------- | -------- | """]] # funct5 = 11100 @@ -238,7 +234,6 @@ Notes: 31..27| 26..25| 24..20 |19..15|14...12| 11..7 | 6....0 | function | funct5| SDHQ | rs2 | rs1 |funct3 | rd | opcode | name | 5 | 2 | 5 | 5 | 3 | 5 | 7 | | ------ | ----- | ----- | -----| ----- | ----- | ------- | -------- | 11100 | 00 | 00000 | rs1 | 000 | rd | 1010011 | FMV.X.W | 11100 | 00 | 00000 | rs1 | 001 | rd | 1010011 | FCLASS.S | 11100 | 00 | xxxxx | rs1 | yyy | rd | 1010011 | rs2? f3? | @@ -250,7 +245,6 @@ funct5| SDHQ | rs2 | rs1 |funct3 | rd | opcode | name | 11100 | 11 | 00000 | rs1 | 000 | rd | 1010011 | **FMVH.X.D** | 11100 | 11 | 00000 | rs1 | 001 | rd | 1010011 | FCLASS.Q | 11100 | xx | xxxxx | rs1 | yyy | rd | 1010011 | rs2? f3? | ------ | ----- | ----- | -----| ----- | ----- | ------- | -------- | """]] # funct5 = 11110 @@ -266,7 +260,6 @@ Notes: 31..27 | 26..25 | 24..20 |19..15| 14...12| 11..7 | 6....0 | function | funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | 5 | 2 | 5 | 5 | 3 | 5 | 7 | | ------- | ----- | ----- | -----| ----- | ----- | ------- | -------- | 11110 | 00 | 00000 | rs1 | 000 | rd | 1010011 | FMV.W.X | 11110 | 00 | xxxxx | rs1 | yyy | rd | 1010011 | rs2? f3? | ------ | ----- | ----- | -----| ----- | ----- | ------- | -------- | @@ -275,7 +268,6 @@ funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name | ------ | ----- | ----- | -----| ----- | ----- | ------- | -------- | 11110 | 11 | 00000 | rs1 | 000 | rd | 1010011 | ? | 11110 | 11 | xxxxx | rs1 | yyy | rd | 1010011 | rs2? f3? | ------- | ----- | ----- | -----| ----- | ----- | ------- | -------- | """]] # funct5 = ????? -- 2.30.2