+ return (csvs, csvs_svp64, primarykeys, bykey, insn_to_csv, insns,
+ dictkeys, immediates)
+
+
+def regs_profile(insn, res):
+ """get a more detailed register profile: 1st operand is RA,
+ 2nd is RB, etc. etc
+ """
+ regs = []
+ for k in ['in1', 'in2', 'in3', 'out', 'CR in', 'CR out']:
+ if insn[k].startswith('CONST'):
+ res[k] = ''
+ regs.append('')
+ else:
+ res[k] = insn[k]
+ if insn[k] == 'RA_OR_ZERO':
+ regs.append('RA')
+ elif insn[k] != 'NONE':
+ regs.append(insn[k])
+ else:
+ regs.append('')
+ return regs
+
+
+def extra_classifier(insn_name, value, name, res, regs):
+ """extra_classifier: creates the SVP64.RM EXTRA2/3 classification.
+ there is very little space (9 bits) to mark register operands
+ (RT RA RB, BA BB, BFA, FRS etc.) with the "extra" information
+ needed to tell if *EACH* operand (of which there can be up to five!)
+ is Vectorised, and whether its numbering is extended into the
+ 0..127 range rather than the limited 3/5 bit of Scalar v3.0 Power ISA.
+
+ thus begins the rather tedious but by-rote examination of EVERY
+ Scalar instruction, working out how best to tell a decoder how to
+ extend the registers. EXTRA2 can have up to 4 slots (of 2 bit each)
+ where due to RM.EXTRA being 9 bits, EXTRA3 can have up to 3 slots
+ (of 3 bit each). the index REGNAME says which slot the register
+ named REGNAME must read its decoding from. d: means destination,
+ s: means source. some are *shared slots* especially LDST update.
+ some Rc=1 ops have the CR0/CR1 as a co-result which is also
+ obviously Vectorised if the result is Vectorised.
+
+ it is actually quite straightforward but the sheer quantity of
+ Scalar Power ISA instructions made it prudent to do this in an
+ intelligent way, almost by-rote, by analysing the register profiles.
+ """
+ # for LD/ST FP, use FRT/FRS not RT/RS, and use CR1 not CR0
+ if insn_name.startswith("lf"):
+ dRT = 'd:FRT'
+ dCR = 'd:CR1'
+ else:
+ dRT = 'd:RT'
+ dCR = 'd:CR0'
+ if insn_name.startswith("stf"):
+ sRS = 's:FRS'
+ dCR = 'd:CR1'
+ else:
+ sRS = 's:RS'
+ dCR = 'd:CR0'
+
+ # sigh now the fun begins. this isn't the sanest way to do it
+ # but the patterns are pretty regular. we start with the "profile"
+ # because that determines how much space is available (total num
+ # regs to decode) then if necessary begin apecialising either
+ # by the instruction name or through more detailed register
+ # profiling. example:
+ # if regs == ['RA', '', '', 'RT', '', '']:
+ # is in the order in1 in2 in3 out1 out2 Rc=1
+
+ # ********
+ # start with LD/ST
+
+ if value == 'LDSTRM-2P-1S1D':
+ res['Etype'] = 'EXTRA3' # RM EXTRA3 type
+ res['0'] = dRT # RT: Rdest_EXTRA3
+ res['1'] = 's:RA' # RA: Rsrc1_EXTRA3
+
+ elif value == 'LDSTRM-2P-1S2D':
+ res['Etype'] = 'EXTRA2' # RM EXTRA2 type
+ res['0'] = dRT # RT: Rdest_EXTRA3
+ res['1'] = 'd:RA' # RA: Rdest2_EXTRA2
+ res['2'] = 's:RA' # RA: Rsrc1_EXTRA2
+
+ elif value == 'LDSTRM-2P-2S':
+ # stw, std, sth, stb
+ res['Etype'] = 'EXTRA3' # RM EXTRA3 type
+ res['0'] = sRS # RS: Rdest1_EXTRA3
+ res['1'] = 's:RA' # RA: Rsrc1_EXTRA3
+
+ elif value == 'LDSTRM-2P-2S1D':
+ if 'st' in insn_name and 'x' not in insn_name: # stwu/stbu etc
+ res['Etype'] = 'EXTRA2' # RM EXTRA2 type
+ res['0'] = 'd:RA' # RA: Rdest1_EXTRA2
+ res['1'] = sRS # RS: Rdsrc1_EXTRA2
+ res['2'] = 's:RA' # RA: Rsrc2_EXTRA2
+ elif 'st' in insn_name and 'x' in insn_name: # stwux
+ res['Etype'] = 'EXTRA2' # RM EXTRA2 type
+ res['0'] = 'd:RA' # RA: Rdest1_EXTRA2
+ # RS: Rdest2_EXTRA2, RA: Rsrc1_EXTRA2
+ res['1'] = "%s;%s" % (sRS, 's:RA')
+ res['2'] = 's:RB' # RB: Rsrc2_EXTRA2
+ elif 'u' in insn_name: # ldux etc.
+ res['Etype'] = 'EXTRA2' # RM EXTRA2 type
+ res['0'] = dRT # RT: Rdest1_EXTRA2
+ res['1'] = 'd:RA' # RA: Rdest2_EXTRA2
+ res['2'] = 's:RB' # RB: Rsrc1_EXTRA2
+ else:
+ res['Etype'] = 'EXTRA2' # RM EXTRA2 type
+ res['0'] = dRT # RT: Rdest1_EXTRA2
+ res['1'] = 's:RA' # RA: Rsrc1_EXTRA2
+ res['2'] = 's:RB' # RB: Rsrc2_EXTRA2
+
+ elif value == 'LDSTRM-2P-3S':
+ res['Etype'] = 'EXTRA2' # RM EXTRA2 type
+ if 'cx' in insn_name:
+ res['0'] = "%s;%s" % (sRS, dCR) # RS: Rsrc1_EXTRA2 CR0: dest
+ else:
+ res['0'] = sRS # RS: Rsrc1_EXTRA2
+ res['1'] = 's:RA' # RA: Rsrc2_EXTRA2
+ res['2'] = 's:RB' # RA: Rsrc3_EXTRA2
+
+ # **********
+ # now begins,arithmetic
+
+ elif value == 'RM-2P-1S1D':
+ res['Etype'] = 'EXTRA3' # RM EXTRA3 type
+ if insn_name == 'mtspr':
+ res['0'] = 'd:SPR' # SPR: Rdest1_EXTRA3
+ res['1'] = 's:RS' # RS: Rsrc1_EXTRA3
+ elif insn_name == 'mfspr':
+ res['0'] = 'd:RS' # RS: Rdest1_EXTRA3
+ res['1'] = 's:SPR' # SPR: Rsrc1_EXTRA3
+ elif name == 'CRio' and insn_name == 'mcrf':
+ res['0'] = 'd:BF' # BFA: Rdest1_EXTRA3
+ res['1'] = 's:BFA' # BFA: Rsrc1_EXTRA3
+ elif 'mfcr' in insn_name or 'mfocrf' in insn_name:
+ res['0'] = 'd:RT' # RT: Rdest1_EXTRA3
+ res['1'] = 's:CR' # CR: Rsrc1_EXTRA3
+ elif insn_name == 'setb':
+ res['0'] = 'd:RT' # RT: Rdest1_EXTRA3
+ res['1'] = 's:BFA' # BFA: Rsrc1_EXTRA3
+ elif insn_name.startswith('cmp'): # cmpi
+ res['0'] = 'd:BF' # BF: Rdest1_EXTRA3
+ res['1'] = 's:RA' # RA: Rsrc1_EXTRA3
+ elif regs == ['RA', '', '', 'RT', '', '']:
+ res['0'] = 'd:RT' # RT: Rdest1_EXTRA3
+ res['1'] = 's:RA' # RA: Rsrc1_EXTRA3
+ elif regs == ['RA', '', '', 'RT', '', 'CR0']:
+ res['0'] = 'd:RT;d:CR0' # RT,CR0: Rdest1_EXTRA3
+ res['1'] = 's:RA' # RA: Rsrc1_EXTRA3
+ elif (regs == ['RS', '', '', 'RA', '', 'CR0'] or
+ regs == ['', '', 'RS', 'RA', '', 'CR0']):
+ res['0'] = 'd:RA;d:CR0' # RA,CR0: Rdest1_EXTRA3
+ res['1'] = 's:RS' # RS: Rsrc1_EXTRA3
+ elif regs == ['RS', '', '', 'RA', '', '']:
+ res['0'] = 'd:RA' # RA: Rdest1_EXTRA3
+ res['1'] = 's:RS' # RS: Rsrc1_EXTRA3
+ elif regs == ['', 'FRB', '', 'FRT', '0', 'CR1']:
+ res['0'] = 'd:FRT;d:CR1' # FRT,CR1: Rdest1_EXTRA3
+ res['1'] = 's:FRA' # FRA: Rsrc1_EXTRA3
+ elif regs == ['', 'FRB', '', '', '', 'CR1']:
+ res['0'] = 'd:CR1' # CR1: Rdest1_EXTRA3
+ res['1'] = 's:FRB' # FRA: Rsrc1_EXTRA3
+ elif regs == ['', 'FRB', '', '', '', 'BF']:
+ res['0'] = 'd:BF' # BF: Rdest1_EXTRA3
+ res['1'] = 's:FRB' # FRA: Rsrc1_EXTRA3
+ elif regs == ['', 'FRB', '', 'FRT', '', 'CR1']:
+ res['0'] = 'd:FRT;d:CR1' # FRT,CR1: Rdest1_EXTRA3
+ res['1'] = 's:FRB' # FRB: Rsrc1_EXTRA3
+ elif insn_name == 'fishmv':
+ # an overwrite instruction
+ res['0'] = 'd:FRS' # FRS: Rdest1_EXTRA3
+ res['1'] = 's:FRS' # FRS: Rsrc1_EXTRA3
+ elif insn_name == 'setvl':
+ res['0'] = 'd:RT' # RT: Rdest1_EXTRA3
+ res['1'] = 's:RA' # RS: Rsrc1_EXTRA3
+ else:
+ res['0'] = 'TODO'
+ print("regs TODO", insn_name, regs)
+
+ elif value == 'RM-1P-2S1D':
+ res['Etype'] = 'EXTRA3' # RM EXTRA3 type
+ if insn_name.startswith('cr'):
+ res['0'] = 'd:BT' # BT: Rdest1_EXTRA3
+ res['1'] = 's:BA' # BA: Rsrc1_EXTRA3
+ res['2'] = 's:BB' # BB: Rsrc2_EXTRA3
+ elif regs == ['FRA', '', 'FRC', 'FRT', '', 'CR1']:
+ res['0'] = 'd:FRT;d:CR1' # FRT,CR1: Rdest1_EXTRA3
+ res['1'] = 's:FRA' # FRA: Rsrc1_EXTRA3
+ res['2'] = 's:FRC' # FRC: Rsrc1_EXTRA3
+ # should be for fcmp
+ elif regs == ['FRA', 'FRB', '', '', '', 'BF']:
+ res['0'] = 'd:BF' # BF: Rdest1_EXTRA3
+ res['1'] = 's:FRA' # FRA: Rsrc1_EXTRA3
+ res['2'] = 's:FRB' # FRB: Rsrc1_EXTRA3
+ elif regs == ['FRA', 'FRB', '', 'FRT', '', '']:
+ res['0'] = 'd:FRT' # FRT: Rdest1_EXTRA3
+ res['1'] = 's:FRA' # FRA: Rsrc1_EXTRA3
+ res['2'] = 's:FRB' # FRB: Rsrc1_EXTRA3
+ elif regs == ['FRA', 'FRB', '', 'FRT', '', 'CR1']:
+ res['0'] = 'd:FRT;d:CR1' # FRT,CR1: Rdest1_EXTRA3
+ res['1'] = 's:FRA' # FRA: Rsrc1_EXTRA3
+ res['2'] = 's:FRB' # FRB: Rsrc1_EXTRA3
+ elif regs == ['FRA', 'RB', '', 'FRT', '', 'CR1']:
+ res['0'] = 'd:FRT;d:CR1' # FRT,CR1: Rdest1_EXTRA3
+ res['1'] = 's:FRA' # FRA: Rsrc1_EXTRA3
+ res['2'] = 's:RB' # RB: Rsrc1_EXTRA3
+ elif name == '2R-1W' or insn_name == 'cmpb': # cmpb
+ if insn_name in ['bpermd', 'cmpb']:
+ res['0'] = 'd:RA' # RA: Rdest1_EXTRA3
+ res['1'] = 's:RS' # RS: Rsrc1_EXTRA3
+ else:
+ res['0'] = 'd:RT' # RT: Rdest1_EXTRA3
+ res['1'] = 's:RA' # RA: Rsrc1_EXTRA3
+ res['2'] = 's:RB' # RB: Rsrc1_EXTRA3
+ elif insn_name.startswith('cmp'): # cmp
+ res['0'] = 'd:BF' # BF: Rdest1_EXTRA3
+ res['1'] = 's:RA' # RA: Rsrc1_EXTRA3
+ res['2'] = 's:RB' # RB: Rsrc1_EXTRA3
+ elif (regs == ['', 'RB', 'RS', 'RA', '', 'CR0'] or
+ regs == ['RS', 'RB', '', 'RA', '', 'CR0']):
+ res['0'] = 'd:RA;d:CR0' # RA,CR0: Rdest1_EXTRA3
+ res['1'] = 's:RB' # RB: Rsrc1_EXTRA3
+ res['2'] = 's:RS' # RS: Rsrc1_EXTRA3
+ elif regs == ['RA', 'RB', '', 'RT', '', 'CR0']:
+ res['0'] = 'd:RT;d:CR0' # RT,CR0: Rdest1_EXTRA3
+ res['1'] = 's:RA' # RA: Rsrc1_EXTRA3
+ res['2'] = 's:RB' # RB: Rsrc1_EXTRA3
+ elif regs == ['RA', '', 'RS', 'RA', '', 'CR0']:
+ res['0'] = 'd:RA;d:CR0' # RA,CR0: Rdest1_EXTRA3
+ res['1'] = 's:RA' # RA: Rsrc1_EXTRA3
+ res['2'] = 's:RS' # RS: Rsrc1_EXTRA3
+ else:
+ res['0'] = 'TODO'
+
+ elif value == 'RM-2P-2S1D':
+ res['Etype'] = 'EXTRA2' # RM EXTRA2 type
+ if insn_name.startswith('mt'): # mtcrf
+ res['0'] = 'd:CR' # CR: Rdest1_EXTRA2
+ res['1'] = 's:RS' # RS: Rsrc1_EXTRA2
+ res['2'] = 's:CR' # CR: Rsrc2_EXTRA2
+ else:
+ res['0'] = 'TODO'
+
+ elif value == 'RM-1P-3S1D':
+ res['Etype'] = 'EXTRA2' # RM EXTRA2 type
+ if regs == ['RA', 'RB', 'RC', 'RT', '', '']: # madd*
+ res['0'] = 'd:RT' # RT,CR0: Rdest1_EXTRA2
+ res['1'] = 's:RA' # RA: Rsrc1_EXTRA2
+ res['2'] = 's:RB' # RT: Rsrc2_EXTRA2
+ res['3'] = 's:RC' # RT: Rsrc3_EXTRA2
+ elif regs == ['RA', 'RB', 'RC', 'RT', '', 'CR0']: # pcdec
+ res['0'] = 'd:RT;d:CR0' # RT,CR0: Rdest1_EXTRA2
+ res['1'] = 's:RA' # RA: Rsrc1_EXTRA2
+ res['2'] = 's:RB' # RT: Rsrc2_EXTRA2
+ res['3'] = 's:RC' # RT: Rsrc3_EXTRA2
+ elif regs == ['RA', 'RB', 'RT', 'RT', '', 'CR0']: # overwrite 3-in
+ res['0'] = 'd:RT;d:CR0' # RT,CR0: Rdest1_EXTRA2
+ res['1'] = 's:RA' # RA: Rsrc1_EXTRA2
+ res['2'] = 's:RB' # RT: Rsrc2_EXTRA2
+ res['3'] = 's:RT' # RT: Rsrc3_EXTRA2
+ elif insn_name == 'isel':
+ res['0'] = 'd:RT' # RT: Rdest1_EXTRA2
+ res['1'] = 's:RA' # RA: Rsrc1_EXTRA2
+ res['2'] = 's:RB' # RT: Rsrc2_EXTRA2
+ res['3'] = 's:BC' # BC: Rsrc3_EXTRA2
+ else: # fmadd*
+ res['0'] = 'd:FRT;d:CR1' # FRT, CR1: Rdest1_EXTRA2
+ res['1'] = 's:FRA' # FRA: Rsrc1_EXTRA2
+ res['2'] = 's:FRB' # FRB: Rsrc2_EXTRA2
+ res['3'] = 's:FRC' # FRC: Rsrc3_EXTRA2
+
+ elif value == 'RM-1P-1D':
+ res['Etype'] = 'EXTRA3' # RM EXTRA3 type
+ if insn_name == 'svstep':
+ res['0'] = 'd:RT;d:CR0' # RT,CR0: Rdest1_EXTRA3
+ if insn_name == 'fmvis':
+ res['0'] = 'd:FRS' # FRS: Rdest1_EXTRA3
+
+ # HACK! thos should be RM-1P-1S butvthere is a bug with sv.bc
+ elif value == 'RM-2P-1S':
+ res['Etype'] = 'EXTRA3' # RM EXTRA3 type
+ if insn_name.startswith('bc'):
+ res['0'] = 's:BI' # BI: Rsrc1_EXTRA3
+
+
+def process_csvs(format):
+
+ print("# Draft SVP64 Power ISA register 'profile's")
+ print('')
+ print("this page is auto-generated, do not edit")
+ print("created by http://libre-soc.org/openpower/sv_analysis.py")
+ print('')
+
+ (csvs, csvs_svp64, primarykeys, bykey, insn_to_csv, insns,
+ dictkeys, immediates) = read_csvs()
+