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b7e5135427
It is able to handle 16-bit code as well, and comes with an own assembler and loader. (They are already known from Minix and Linux as the `bin86' package.) With a bit of `dd' magic, bcc can be used to compile messdos programs.
159 lines
3.0 KiB
Groff
159 lines
3.0 KiB
Groff
.\"
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.\" This manual page has been assembled after Bruce's original bcc.doc
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.\" file by Jörg Wunsch <joerg@FreeBSD.org>.
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.\" It is redistributed under the same conditions as the whole bcc
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.\" package itself.
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.\"
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.Dd March 26, 1995
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.Os
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.Dt AS86 1
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.Sh NAME
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.Nm as86
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.Nd assembler for 8086/80386
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.Sh SYNOPSIS
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.Nm as86
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.Op Fl 03agjuw
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.Op Fl b Op Ar bin
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.Op Fl lm Op Ar list
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.Op Fl n Ar name
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.Op Fl o Ar obj
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.Op Fl s Ar sym
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.Ar src
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.Sh DESCRIPTION
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.Ss Overview
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.Nm As86
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is an assembler for 8086 or 80386 CPUs. Its syntax resembles rather
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the usual 8086 assembler syntax than the AT&T-like syntax as used by
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the system's assembler
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.Xr as 1 .
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It can also be compiled to support the Motorola 6809 CPU. The name
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.Nm as86
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has only been chosen to make it distinct from the system's assembler.
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.Ss Options
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.Bl -tag -width indent -compact
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.It Fl 0
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.Pq the digit 0
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start with 16-bit code segment
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.It Fl 3
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start with 32-bit code segment
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.It Fl a
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enable partial compatibility with asld
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.It Fl b
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produce binary file, filename may follow
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.Pq obsolete
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.It Fl g
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only put global symbols in object file
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.It Fl j
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force all jumps to be long
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.It Fl l
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produce list file, filename may follow
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.It Fl m
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print macro expansions in listing
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.It Fl n
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name of module follows
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.Pq goes in object instead of source name
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.It Fl o
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produce object file, filename follows
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.It Fl s
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produce symbol file, filename follows
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.Pq obsolete
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.It Fl u
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take undefined symbols as imported-with-unspecified segment
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.It Fl w
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don't print warnings
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.El
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The 6809 version does not support
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.Fl 0 ,
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.Fl 3 ,
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.Fl a
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or
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.Fl j .
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.Ss Defaults
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Off or none except for these; no output is produced without a flag:
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.Bl -tag -width indenct -compact
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.It Fl 0 | Fl 3
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native, i.\& e. 80386
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.It Ar list
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stdout
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.Pq beware of clobbering next arg
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.It Ar name
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basename of the source name
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.El
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.Ss Input syntax
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The following lists all acceptable names except the CPU instructions:
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.Bl -tag -width "XXXXXXX" -compact -offset indent
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.It Register names
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bp, bx, di, si, eax, ebp, ecx, edi, edx, esi, esp,
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ax, cx, dx, sp, ah, al, bh, bl, ch, cl, dh, dl,
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cs, ds, es, fs, gs, ss, cr0, cr2, cr3, dr0, dr1,
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dr3, dr6, dr7, tr3, tr4, tr5, tr6, tr7, st.
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.It Type sizes
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byte, dword, fword, far, ptr, pword, qword, tbyte, word.
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.It Pseudo-operations
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else, elseif, elseifc, endif, if, ifc;
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\&.align, .ascii, .blkb, .blkw, block, .bss, .byte, comm, .comm,
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\&.data, .data1, .data2, .data4, db, dd, .define, dw, end, endb,
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enter, entry, equ, .even, export, extern, .extern, extrn, fail, .fail,
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fcb, fcc, fdb, get, .globl, ident, import, include, lcomm, .lcomm,
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\&.list, loc, .long, .maclist, macro, .map, org, .org, public,
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rmb, .rom, .sect, set, setdp, .short, .space, .text, use16,
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use32, .warn, .word, .zero.
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.El
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.Sh SEE ALSO
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.Xr as 1 ;
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.Xr ld86 1 ,
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.Xr bcc 1 .
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.Sh AUTHORS
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This program has been developed by Bruce Evans.
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.Sh BUGS
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The
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.Fl u
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and
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.Fl w
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options are perhaps back to front because they are needed for cc1
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output and Minix's make does the wrong thing with .s files left
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around. However, all assembler code not written by compilers should
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assemble with them turned off.
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