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diff --git a/gas/doc/c-z8k.texi b/gas/doc/c-z8k.texi new file mode 100644 index 00000000000..1fb10e3b2ca --- /dev/null +++ b/gas/doc/c-z8k.texi @@ -0,0 +1,380 @@ +@c Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. +@c This is part of the GAS manual. +@c For copying conditions, see the file as.texinfo. +@ifset GENERIC +@page +@node Z8000-Dependent +@chapter Z8000 Dependent Features +@end ifset +@ifclear GENERIC +@node Machine Dependencies +@chapter Z8000 Dependent Features +@end ifclear + +@cindex Z8000 support +The Z8000 @value{AS} supports both members of the Z8000 family: the +unsegmented Z8002, with 16 bit addresses, and the segmented Z8001 with +24 bit addresses. + +When the assembler is in unsegmented mode (specified with the +@code{unsegm} directive), an address takes up one word (16 bit) +sized register. When the assembler is in segmented mode (specified with +the @code{segm} directive), a 24-bit address takes up a long (32 bit) +register. @xref{Z8000 Directives,,Assembler Directives for the Z8000}, +for a list of other Z8000 specific assembler directives. + +@menu +* Z8000 Options:: No special command-line options for Z8000 +* Z8000 Syntax:: Assembler syntax for the Z8000 +* Z8000 Directives:: Special directives for the Z8000 +* Z8000 Opcodes:: Opcodes +@end menu + +@node Z8000 Options +@section Options + +@cindex Z8000 options +@cindex options, Z8000 +@code{@value{AS}} has no additional command-line options for the Zilog +Z8000 family. + +@node Z8000 Syntax +@section Syntax +@menu +* Z8000-Chars:: Special Characters +* Z8000-Regs:: Register Names +* Z8000-Addressing:: Addressing Modes +@end menu + +@node Z8000-Chars +@subsection Special Characters + +@cindex line comment character, Z8000 +@cindex Z8000 line comment character +@samp{!} is the line comment character. + +@cindex line separator, Z8000 +@cindex statement separator, Z8000 +@cindex Z8000 line separator +You can use @samp{;} instead of a newline to separate statements. + +@node Z8000-Regs +@subsection Register Names + +@cindex Z8000 registers +@cindex registers, Z8000 +The Z8000 has sixteen 16 bit registers, numbered 0 to 15. You can refer +to different sized groups of registers by register number, with the +prefix @samp{r} for 16 bit registers, @samp{rr} for 32 bit registers and +@samp{rq} for 64 bit registers. You can also refer to the contents of +the first eight (of the sixteen 16 bit registers) by bytes. They are +named @samp{r@var{n}h} and @samp{r@var{n}l}. + +@smallexample +@exdent @emph{byte registers} +r0l r0h r1h r1l r2h r2l r3h r3l +r4h r4l r5h r5l r6h r6l r7h r7l + +@exdent @emph{word registers} +r0 r1 r2 r3 r4 r5 r6 r7 r8 r9 r10 r11 r12 r13 r14 r15 + +@exdent @emph{long word registers} +rr0 rr2 rr4 rr6 rr8 rr10 rr12 rr14 + +@exdent @emph{quad word registers} +rq0 rq4 rq8 rq12 +@end smallexample + +@node Z8000-Addressing +@subsection Addressing Modes + +@cindex addressing modes, Z8000 +@cindex Z800 addressing modes +@value{AS} understands the following addressing modes for the Z8000: + +@table @code +@item r@var{n} +Register direct + +@item @@r@var{n} +Indirect register + +@item @var{addr} +Direct: the 16 bit or 24 bit address (depending on whether the assembler +is in segmented or unsegmented mode) of the operand is in the instruction. + +@item address(r@var{n}) +Indexed: the 16 or 24 bit address is added to the 16 bit register to produce +the final address in memory of the operand. + +@item r@var{n}(#@var{imm}) +Base Address: the 16 or 24 bit register is added to the 16 bit sign +extended immediate displacement to produce the final address in memory +of the operand. + +@item r@var{n}(r@var{m}) +Base Index: the 16 or 24 bit register r@var{n} is added to the sign +extended 16 bit index register r@var{m} to produce the final address in +memory of the operand. + +@item #@var{xx} +Immediate data @var{xx}. +@end table + +@node Z8000 Directives +@section Assembler Directives for the Z8000 + +@cindex Z8000 directives +@cindex directives, Z8000 +The Z8000 port of @value{AS} includes these additional assembler directives, +for compatibility with other Z8000 assemblers. As shown, these do not +begin with @samp{.} (unlike the ordinary @value{AS} directives). + +@table @code +@kindex segm +@item segm +Generates code for the segmented Z8001. + +@kindex unsegm +@item unsegm +Generates code for the unsegmented Z8002. + +@kindex name +@item name +Synonym for @code{.file} + +@kindex global +@item global +Synonym for @code{.global} + +@kindex wval +@item wval +Synonym for @code{.word} + +@kindex lval +@item lval +Synonym for @code{.long} + +@kindex bval +@item bval +Synonym for @code{.byte} + +@kindex sval +@item sval +Assemble a string. @code{sval} expects one string literal, delimited by +single quotes. It assembles each byte of the string into consecutive +addresses. You can use the escape sequence @samp{%@var{xx}} (where +@var{xx} represents a two-digit hexadecimal number) to represent the +character whose @sc{ascii} value is @var{xx}. Use this feature to +describe single quote and other characters that may not appear in string +literals as themselves. For example, the C statement @w{@samp{char *a = +"he said \"it's 50% off\"";}} is represented in Z8000 assembly language +(shown with the assembler output in hex at the left) as + +@iftex +@begingroup +@let@nonarrowing=@comment +@end iftex +@smallexample +68652073 sval 'he said %22it%27s 50%25 off%22%00' +61696420 +22697427 +73203530 +25206F66 +662200 +@end smallexample +@iftex +@endgroup +@end iftex + +@kindex rsect +@item rsect +synonym for @code{.section} + +@kindex block +@item block +synonym for @code{.space} + +@kindex even +@item even +special case of @code{.align}; aligns output to even byte boundary. +@end table + +@node Z8000 Opcodes +@section Opcodes + +@cindex Z8000 opcode summary +@cindex opcode summary, Z8000 +@cindex mnemonics, Z8000 +@cindex instruction summary, Z8000 +For detailed information on the Z8000 machine instruction set, see +@cite{Z8000 Technical Manual}. + +@ifset SMALL +@c this table, due to the multi-col faking and hardcoded order, looks silly +@c except in smallbook. See comments below "@set SMALL" near top of this file. + +The following table summarizes the opcodes and their arguments: +@iftex +@begingroup +@let@nonarrowing=@comment +@end iftex +@smallexample + + rs @r{16 bit source register} + rd @r{16 bit destination register} + rbs @r{8 bit source register} + rbd @r{8 bit destination register} + rrs @r{32 bit source register} + rrd @r{32 bit destination register} + rqs @r{64 bit source register} + rqd @r{64 bit destination register} + addr @r{16/24 bit address} + imm @r{immediate data} + +adc rd,rs clrb addr cpsir @@rd,@@rs,rr,cc +adcb rbd,rbs clrb addr(rd) cpsirb @@rd,@@rs,rr,cc +add rd,@@rs clrb rbd dab rbd +add rd,addr com @@rd dbjnz rbd,disp7 +add rd,addr(rs) com addr dec @@rd,imm4m1 +add rd,imm16 com addr(rd) dec addr(rd),imm4m1 +add rd,rs com rd dec addr,imm4m1 +addb rbd,@@rs comb @@rd dec rd,imm4m1 +addb rbd,addr comb addr decb @@rd,imm4m1 +addb rbd,addr(rs) comb addr(rd) decb addr(rd),imm4m1 +addb rbd,imm8 comb rbd decb addr,imm4m1 +addb rbd,rbs comflg flags decb rbd,imm4m1 +addl rrd,@@rs cp @@rd,imm16 di i2 +addl rrd,addr cp addr(rd),imm16 div rrd,@@rs +addl rrd,addr(rs) cp addr,imm16 div rrd,addr +addl rrd,imm32 cp rd,@@rs div rrd,addr(rs) +addl rrd,rrs cp rd,addr div rrd,imm16 +and rd,@@rs cp rd,addr(rs) div rrd,rs +and rd,addr cp rd,imm16 divl rqd,@@rs +and rd,addr(rs) cp rd,rs divl rqd,addr +and rd,imm16 cpb @@rd,imm8 divl rqd,addr(rs) +and rd,rs cpb addr(rd),imm8 divl rqd,imm32 +andb rbd,@@rs cpb addr,imm8 divl rqd,rrs +andb rbd,addr cpb rbd,@@rs djnz rd,disp7 +andb rbd,addr(rs) cpb rbd,addr ei i2 +andb rbd,imm8 cpb rbd,addr(rs) ex rd,@@rs +andb rbd,rbs cpb rbd,imm8 ex rd,addr +bit @@rd,imm4 cpb rbd,rbs ex rd,addr(rs) +bit addr(rd),imm4 cpd rd,@@rs,rr,cc ex rd,rs +bit addr,imm4 cpdb rbd,@@rs,rr,cc exb rbd,@@rs +bit rd,imm4 cpdr rd,@@rs,rr,cc exb rbd,addr +bit rd,rs cpdrb rbd,@@rs,rr,cc exb rbd,addr(rs) +bitb @@rd,imm4 cpi rd,@@rs,rr,cc exb rbd,rbs +bitb addr(rd),imm4 cpib rbd,@@rs,rr,cc ext0e imm8 +bitb addr,imm4 cpir rd,@@rs,rr,cc ext0f imm8 +bitb rbd,imm4 cpirb rbd,@@rs,rr,cc ext8e imm8 +bitb rbd,rs cpl rrd,@@rs ext8f imm8 +bpt cpl rrd,addr exts rrd +call @@rd cpl rrd,addr(rs) extsb rd +call addr cpl rrd,imm32 extsl rqd +call addr(rd) cpl rrd,rrs halt +calr disp12 cpsd @@rd,@@rs,rr,cc in rd,@@rs +clr @@rd cpsdb @@rd,@@rs,rr,cc in rd,imm16 +clr addr cpsdr @@rd,@@rs,rr,cc inb rbd,@@rs +clr addr(rd) cpsdrb @@rd,@@rs,rr,cc inb rbd,imm16 +clr rd cpsi @@rd,@@rs,rr,cc inc @@rd,imm4m1 +clrb @@rd cpsib @@rd,@@rs,rr,cc inc addr(rd),imm4m1 +inc addr,imm4m1 ldb rbd,rs(rx) mult rrd,addr(rs) +inc rd,imm4m1 ldb rd(imm16),rbs mult rrd,imm16 +incb @@rd,imm4m1 ldb rd(rx),rbs mult rrd,rs +incb addr(rd),imm4m1 ldctl ctrl,rs multl rqd,@@rs +incb addr,imm4m1 ldctl rd,ctrl multl rqd,addr +incb rbd,imm4m1 ldd @@rs,@@rd,rr multl rqd,addr(rs) +ind @@rd,@@rs,ra lddb @@rs,@@rd,rr multl rqd,imm32 +indb @@rd,@@rs,rba lddr @@rs,@@rd,rr multl rqd,rrs +inib @@rd,@@rs,ra lddrb @@rs,@@rd,rr neg @@rd +inibr @@rd,@@rs,ra ldi @@rd,@@rs,rr neg addr +iret ldib @@rd,@@rs,rr neg addr(rd) +jp cc,@@rd ldir @@rd,@@rs,rr neg rd +jp cc,addr ldirb @@rd,@@rs,rr negb @@rd +jp cc,addr(rd) ldk rd,imm4 negb addr +jr cc,disp8 ldl @@rd,rrs negb addr(rd) +ld @@rd,imm16 ldl addr(rd),rrs negb rbd +ld @@rd,rs ldl addr,rrs nop +ld addr(rd),imm16 ldl rd(imm16),rrs or rd,@@rs +ld addr(rd),rs ldl rd(rx),rrs or rd,addr +ld addr,imm16 ldl rrd,@@rs or rd,addr(rs) +ld addr,rs ldl rrd,addr or rd,imm16 +ld rd(imm16),rs ldl rrd,addr(rs) or rd,rs +ld rd(rx),rs ldl rrd,imm32 orb rbd,@@rs +ld rd,@@rs ldl rrd,rrs orb rbd,addr +ld rd,addr ldl rrd,rs(imm16) orb rbd,addr(rs) +ld rd,addr(rs) ldl rrd,rs(rx) orb rbd,imm8 +ld rd,imm16 ldm @@rd,rs,n orb rbd,rbs +ld rd,rs ldm addr(rd),rs,n out @@rd,rs +ld rd,rs(imm16) ldm addr,rs,n out imm16,rs +ld rd,rs(rx) ldm rd,@@rs,n outb @@rd,rbs +lda rd,addr ldm rd,addr(rs),n outb imm16,rbs +lda rd,addr(rs) ldm rd,addr,n outd @@rd,@@rs,ra +lda rd,rs(imm16) ldps @@rs outdb @@rd,@@rs,rba +lda rd,rs(rx) ldps addr outib @@rd,@@rs,ra +ldar rd,disp16 ldps addr(rs) outibr @@rd,@@rs,ra +ldb @@rd,imm8 ldr disp16,rs pop @@rd,@@rs +ldb @@rd,rbs ldr rd,disp16 pop addr(rd),@@rs +ldb addr(rd),imm8 ldrb disp16,rbs pop addr,@@rs +ldb addr(rd),rbs ldrb rbd,disp16 pop rd,@@rs +ldb addr,imm8 ldrl disp16,rrs popl @@rd,@@rs +ldb addr,rbs ldrl rrd,disp16 popl addr(rd),@@rs +ldb rbd,@@rs mbit popl addr,@@rs +ldb rbd,addr mreq rd popl rrd,@@rs +ldb rbd,addr(rs) mres push @@rd,@@rs +ldb rbd,imm8 mset push @@rd,addr +ldb rbd,rbs mult rrd,@@rs push @@rd,addr(rs) +ldb rbd,rs(imm16) mult rrd,addr push @@rd,imm16 +push @@rd,rs set addr,imm4 subl rrd,imm32 +pushl @@rd,@@rs set rd,imm4 subl rrd,rrs +pushl @@rd,addr set rd,rs tcc cc,rd +pushl @@rd,addr(rs) setb @@rd,imm4 tccb cc,rbd +pushl @@rd,rrs setb addr(rd),imm4 test @@rd +res @@rd,imm4 setb addr,imm4 test addr +res addr(rd),imm4 setb rbd,imm4 test addr(rd) +res addr,imm4 setb rbd,rs test rd +res rd,imm4 setflg imm4 testb @@rd +res rd,rs sinb rbd,imm16 testb addr +resb @@rd,imm4 sinb rd,imm16 testb addr(rd) +resb addr(rd),imm4 sind @@rd,@@rs,ra testb rbd +resb addr,imm4 sindb @@rd,@@rs,rba testl @@rd +resb rbd,imm4 sinib @@rd,@@rs,ra testl addr +resb rbd,rs sinibr @@rd,@@rs,ra testl addr(rd) +resflg imm4 sla rd,imm8 testl rrd +ret cc slab rbd,imm8 trdb @@rd,@@rs,rba +rl rd,imm1or2 slal rrd,imm8 trdrb @@rd,@@rs,rba +rlb rbd,imm1or2 sll rd,imm8 trib @@rd,@@rs,rbr +rlc rd,imm1or2 sllb rbd,imm8 trirb @@rd,@@rs,rbr +rlcb rbd,imm1or2 slll rrd,imm8 trtdrb @@ra,@@rb,rbr +rldb rbb,rba sout imm16,rs trtib @@ra,@@rb,rr +rr rd,imm1or2 soutb imm16,rbs trtirb @@ra,@@rb,rbr +rrb rbd,imm1or2 soutd @@rd,@@rs,ra trtrb @@ra,@@rb,rbr +rrc rd,imm1or2 soutdb @@rd,@@rs,rba tset @@rd +rrcb rbd,imm1or2 soutib @@rd,@@rs,ra tset addr +rrdb rbb,rba soutibr @@rd,@@rs,ra tset addr(rd) +rsvd36 sra rd,imm8 tset rd +rsvd38 srab rbd,imm8 tsetb @@rd +rsvd78 sral rrd,imm8 tsetb addr +rsvd7e srl rd,imm8 tsetb addr(rd) +rsvd9d srlb rbd,imm8 tsetb rbd +rsvd9f srll rrd,imm8 xor rd,@@rs +rsvdb9 sub rd,@@rs xor rd,addr +rsvdbf sub rd,addr xor rd,addr(rs) +sbc rd,rs sub rd,addr(rs) xor rd,imm16 +sbcb rbd,rbs sub rd,imm16 xor rd,rs +sc imm8 sub rd,rs xorb rbd,@@rs +sda rd,rs subb rbd,@@rs xorb rbd,addr +sdab rbd,rs subb rbd,addr xorb rbd,addr(rs) +sdal rrd,rs subb rbd,addr(rs) xorb rbd,imm8 +sdl rd,rs subb rbd,imm8 xorb rbd,rbs +sdlb rbd,rs subb rbd,rbs xorb rbd,rbs +sdll rrd,rs subl rrd,@@rs +set @@rd,imm4 subl rrd,addr +set addr(rd),imm4 subl rrd,addr(rs) +@end smallexample +@iftex +@endgroup +@end iftex +@end ifset + |