as: PDP-11-Options
9.33.1 Options
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The PDP-11 version of 'as' has a rich set of machine dependent options.
9.33.1.1 Code Generation Options
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'-mpic | -mno-pic'
Generate position-independent (or position-dependent) code.
The default is to generate position-independent code.
9.33.1.2 Instruction Set Extension Options
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These options enables or disables the use of extensions over the base
line instruction set as introduced by the first PDP-11 CPU: the KA11.
Most options come in two variants: a '-m'EXTENSION that enables
EXTENSION, and a '-mno-'EXTENSION that disables EXTENSION.
The default is to enable all extensions.
'-mall | -mall-extensions'
Enable all instruction set extensions.
'-mno-extensions'
Disable all instruction set extensions.
'-mcis | -mno-cis'
Enable (or disable) the use of the commercial instruction set,
which consists of these instructions: 'ADDNI', 'ADDN', 'ADDPI',
'ADDP', 'ASHNI', 'ASHN', 'ASHPI', 'ASHP', 'CMPCI', 'CMPC', 'CMPNI',
'CMPN', 'CMPPI', 'CMPP', 'CVTLNI', 'CVTLN', 'CVTLPI', 'CVTLP',
'CVTNLI', 'CVTNL', 'CVTNPI', 'CVTNP', 'CVTPLI', 'CVTPL', 'CVTPNI',
'CVTPN', 'DIVPI', 'DIVP', 'L2DR', 'L3DR', 'LOCCI', 'LOCC', 'MATCI',
'MATC', 'MOVCI', 'MOVC', 'MOVRCI', 'MOVRC', 'MOVTCI', 'MOVTC',
'MULPI', 'MULP', 'SCANCI', 'SCANC', 'SKPCI', 'SKPC', 'SPANCI',
'SPANC', 'SUBNI', 'SUBN', 'SUBPI', and 'SUBP'.
'-mcsm | -mno-csm'
Enable (or disable) the use of the 'CSM' instruction.
'-meis | -mno-eis'
Enable (or disable) the use of the extended instruction set, which
consists of these instructions: 'ASHC', 'ASH', 'DIV', 'MARK',
'MUL', 'RTT', 'SOB' 'SXT', and 'XOR'.
'-mfis | -mkev11'
'-mno-fis | -mno-kev11'
Enable (or disable) the use of the KEV11 floating-point
instructions: 'FADD', 'FDIV', 'FMUL', and 'FSUB'.
'-mfpp | -mfpu | -mfp-11'
'-mno-fpp | -mno-fpu | -mno-fp-11'
Enable (or disable) the use of FP-11 floating-point instructions:
'ABSF', 'ADDF', 'CFCC', 'CLRF', 'CMPF', 'DIVF', 'LDCFF', 'LDCIF',
'LDEXP', 'LDF', 'LDFPS', 'MODF', 'MULF', 'NEGF', 'SETD', 'SETF',
'SETI', 'SETL', 'STCFF', 'STCFI', 'STEXP', 'STF', 'STFPS', 'STST',
'SUBF', and 'TSTF'.
'-mlimited-eis | -mno-limited-eis'
Enable (or disable) the use of the limited extended instruction
set: 'MARK', 'RTT', 'SOB', 'SXT', and 'XOR'.
The -mno-limited-eis options also implies -mno-eis.
'-mmfpt | -mno-mfpt'
Enable (or disable) the use of the 'MFPT' instruction.
'-mmultiproc | -mno-multiproc'
Enable (or disable) the use of multiprocessor instructions:
'TSTSET' and 'WRTLCK'.
'-mmxps | -mno-mxps'
Enable (or disable) the use of the 'MFPS' and 'MTPS' instructions.
'-mspl | -mno-spl'
Enable (or disable) the use of the 'SPL' instruction.
Enable (or disable) the use of the microcode instructions: 'LDUB',
'MED', and 'XFC'.
9.33.1.3 CPU Model Options
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These options enable the instruction set extensions supported by a
particular CPU, and disables all other extensions.
'-mka11'
KA11 CPU. Base line instruction set only.
'-mkb11'
KB11 CPU. Enable extended instruction set and 'SPL'.
'-mkd11a'
KD11-A CPU. Enable limited extended instruction set.
'-mkd11b'
KD11-B CPU. Base line instruction set only.
'-mkd11d'
KD11-D CPU. Base line instruction set only.
'-mkd11e'
KD11-E CPU. Enable extended instruction set, 'MFPS', and 'MTPS'.
'-mkd11f | -mkd11h | -mkd11q'
KD11-F, KD11-H, or KD11-Q CPU. Enable limited extended instruction
set, 'MFPS', and 'MTPS'.
'-mkd11k'
KD11-K CPU. Enable extended instruction set, 'LDUB', 'MED', 'MFPS',
'MFPT', 'MTPS', and 'XFC'.
'-mkd11z'
KD11-Z CPU. Enable extended instruction set, 'CSM', 'MFPS', 'MFPT',
'MTPS', and 'SPL'.
'-mf11'
F11 CPU. Enable extended instruction set, 'MFPS', 'MFPT', and
'MTPS'.
'-mj11'
J11 CPU. Enable extended instruction set, 'CSM', 'MFPS', 'MFPT',
'MTPS', 'SPL', 'TSTSET', and 'WRTLCK'.
'-mt11'
T11 CPU. Enable limited extended instruction set, 'MFPS', and
'MTPS'.
9.33.1.4 Machine Model Options
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These options enable the instruction set extensions supported by a
particular machine model, and disables all other extensions.
'-m11/03'
Same as '-mkd11f'.
'-m11/04'
Same as '-mkd11d'.
'-m11/05 | -m11/10'
Same as '-mkd11b'.
'-m11/15 | -m11/20'
Same as '-mka11'.
'-m11/21'
Same as '-mt11'.
'-m11/23 | -m11/24'
Same as '-mf11'.
'-m11/34'
Same as '-mkd11e'.
'-m11/34a'
Ame as '-mkd11e' '-mfpp'.
'-m11/35 | -m11/40'
Same as '-mkd11a'.
'-m11/44'
Same as '-mkd11z'.
'-m11/45 | -m11/50 | -m11/55 | -m11/70'
Same as '-mkb11'.
'-m11/53 | -m11/73 | -m11/83 | -m11/84 | -m11/93 | -m11/94'
Same as '-mj11'.
'-m11/60'
Same as '-mkd11k'.
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