From b695adaf436937b621a919340e49591055e54722 Mon Sep 17 00:00:00 2001 From: Luke Kenneth Casson Leighton Date: Sun, 30 Apr 2023 20:07:04 +0100 Subject: [PATCH] converted ffnmadds to 3-operand --- openpower/isa/svfparith.mdwn | 9 +++++---- openpower/isatables/minor_59.csv | 2 +- 2 files changed, 6 insertions(+), 5 deletions(-) diff --git a/openpower/isa/svfparith.mdwn b/openpower/isa/svfparith.mdwn index 6579042b..bdb732af 100644 --- a/openpower/isa/svfparith.mdwn +++ b/openpower/isa/svfparith.mdwn @@ -223,13 +223,14 @@ Special Registers Altered: A-Form -* ffnmadds FRT,FRA,FRC,FRB (Rc=0) -* ffnmadds. FRT,FRA,FRC,FRB (Rc=1) +* ffnmadds FRT,FRA,FRB (Rc=0) +* ffnmadds. FRT,FRA,FRB (Rc=1) Pseudo-code: - FRT <- FPMULADD32(FRA, FRC, FRB, -1, -1) - FRS <- FPMULADD32(FRA, FRC, FRB, 1, -1) + tmp <- FRT + FRT <- FPMULADD32(tmp, FRA, FRB, -1, -1) + FRS <- FPMULADD32(tmp, FRA, FRB, 1, -1) Special Registers Altered: diff --git a/openpower/isatables/minor_59.csv b/openpower/isatables/minor_59.csv index 615b2b97..7cd33d9b 100644 --- a/openpower/isatables/minor_59.csv +++ b/openpower/isatables/minor_59.csv @@ -17,7 +17,7 @@ opcode,unit,internal op,in1,in2,in3,out,CR in,CR out,inv A,inv out,cry in,cry ou -----00100,FPU,OP_FP_MADD,FRT,FRB,FRA,FRT,NONE,CR1,0,0,ZERO,0,NONE,0,0,0,0,1,0,RC_ONLY,0,0,ffmsubs,A,,1,3-in 2-out: implicit FRS. unofficial until submitted and approved/renumbered by the opf isa wg -----00101,FPU,OP_FP_MADD,FRT,FRB,FRA,FRT,NONE,CR1,0,0,ZERO,0,NONE,0,0,0,0,1,0,RC_ONLY,0,0,ffmadds,A,,1,3-in 2-out: implicit FRS. unofficial until submitted and approved/renumbered by the opf isa wg -----00110,FPU,OP_FP_MADD,FRA,FRB,FRC,FRT,NONE,CR1,0,0,ZERO,0,NONE,0,0,0,0,1,0,RC_ONLY,0,0,ffnmsubs,A,,1,3-in 2-out: implicit FRS. unofficial until submitted and approved/renumbered by the opf isa wg ------00111,FPU,OP_FP_MADD,FRA,FRB,FRC,FRT,NONE,CR1,0,0,ZERO,0,NONE,0,0,0,0,1,0,RC_ONLY,0,0,ffnmadds,A,,1,3-in 2-out: implicit FRS. unofficial until submitted and approved/renumbered by the opf isa wg +-----00111,FPU,OP_FP_MADD,FRT,FRB,FRA,FRT,NONE,CR1,0,0,ZERO,0,NONE,0,0,0,0,1,0,RC_ONLY,0,0,ffnmadds,A,,1,3-in 2-out: implicit FRS. unofficial until submitted and approved/renumbered by the opf isa wg 1111100000,FPU,OP_FPOP,FRA,FRB,NONE,FRT,NONE,CR1,0,0,ZERO,0,NONE,0,0,0,0,1,0,RC_ONLY,0,0,ffadds,X,,1,2-in 2-out: implicit FRS. unofficial until submitted and approved/renumbered by the opf isa wg -----11011,FPU,OP_FP_MADD,FRT,FRB,FRA,FRT,NONE,CR1,0,0,ZERO,0,NONE,0,0,0,0,1,0,RC_ONLY,0,0,fdmadds,DCT,,1,3-in 2-out: implicit FRS. unofficial until submitted and approved/renumbered by the opf isa wg 1001001110,FPU,OP_FPOP,FRA,FRB,NONE,FRT,NONE,CR1,0,0,ZERO,0,NONE,0,0,0,0,1,0,RC_ONLY,0,0,fatan2s,X,,1,unofficial until submitted and approved/renumbered by the opf isa wg -- 2.30.2