\input texinfo @c -*-Texinfo-*-
-@c Copyright (C) 1991-2019 Free Software Foundation, Inc.
+@c Copyright (C) 1991-2020 Free Software Foundation, Inc.
@c UPDATE!! On future updates--
@c (1) check for new machine-dep cmdline options in
@c md_parse_option definitions in config/tc-*.c
This file documents the GNU Assembler "@value{AS}".
@c man begin COPYRIGHT
-Copyright @copyright{} 1991-2019 Free Software Foundation, Inc.
+Copyright @copyright{} 1991-2020 Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3
@end tex
@vskip 0pt plus 1filll
-Copyright @copyright{} 1991-2019 Free Software Foundation, Inc.
+Copyright @copyright{} 1991-2020 Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3
@ifset Z80
@emph{Target Z80 options:}
- [@b{-z80}] [@b{-r800}]
+ [@b{-z80}]|[@b{-z180}]|[@b{-r800}]|[@b{-ez80}]|[@b{-ez80-adl}]
+ [@b{-strict}]|[@b{-full}]
+ [@b{-with-inst=@var{INST}[,...]}] [@b{-Wnins @var{INST}[,...]}]
+ [@b{-without-inst=@var{INST}[,...]}] [@b{-Fins @var{INST}[,...]}]
[@b{ -ignore-undocumented-instructions}] [@b{-Wnud}]
[@b{ -ignore-unportable-instructions}] [@b{-Wnup}]
[@b{ -warn-undocumented-instructions}] [@b{-Wud}]
The following options are available when @value{AS} is configured for
a Z80 family processor.
@table @gcctabopt
+
@item -z80
Assemble for Z80 processor.
@item -r800
Assemble for R800 processor.
+@item -z180
+Assemble for Z180 processor.
+@item -ez80
+Assemble for eZ80 processor in Z80 memory mode by default.
+@item -ez80-adl
+Assemble for eZ80 processor in ADL memory mode by default.
+
+@item @code{-colonless}
+Accept colonless labels. All names at line begin are treated as labels.
+@item @code{-sdcc}
+Accept assembler code produces by SDCC.
+
+@item @code{-strict}
+Accept documented instructions only.
+@item @code{-full}
+Accept all known Z80 instructions.
+@item @code{-with-inst=INST[,...]}
+@itemx @code{-Wnins INST[,...]}
+Enable specified undocumented instruction(s).
+@item @code{-without-inst=INST[,...]}
+@itemx @code{-Fins INST[,...]}
+Disable specified undocumented instruction(s).
+
@item -ignore-undocumented-instructions
@itemx -Wnud
Assemble undocumented Z80 instructions that also work on R800 without warning.
@itemx -Fup
Treat undocumented Z80 instructions that do not work on R800 as errors.
@end table
+
+Folowing undocumented instructions may be enabled/disabled by
+@code{-with-inst}/@code{-without-inst}:
+@table @gcctabopt
+@item @code{idx-reg-halves}
+All operations with halves of index registers (IXL, IXH, IYL, IYH).
+@item @code{sli}
+SLI or SLL instruction.
+@item @code{op-ii-ld}
+Istructions like @code{<op> (<ii>+<d>),<r>}, where @code{<op>}
+is shift or bit manipulation instruction (RLC, SLA, SET, RES...).
+@item @code{in-f-c}
+Instruction @code{IN F,(C)}.
+@item @code{out-c-0}
+Instruction @code{OUT (C),0}
+@end table
@end ifset
@c man end
* ABORT (COFF):: @code{.ABORT}
@end ifset
-* Align:: @code{.align @var{abs-expr} , @var{abs-expr}}
+* Align:: @code{.align [@var{abs-expr}[, @var{abs-expr}[, @var{abs-expr}]]]}
* Altmacro:: @code{.altmacro}
* Ascii:: @code{.ascii "@var{string}"}@dots{}
* Asciz:: @code{.asciz "@var{string}"}@dots{}
-* Balign:: @code{.balign @var{abs-expr} , @var{abs-expr}}
+* Balign:: @code{.balign [@var{abs-expr}[, @var{abs-expr}]]}
* Bundle directives:: @code{.bundle_align_mode @var{abs-expr}}, etc
* Byte:: @code{.byte @var{expressions}}
* CFI directives:: @code{.cfi_startproc [simple]}, @code{.cfi_endproc}, etc.
* Octa:: @code{.octa @var{bignums}}
* Offset:: @code{.offset @var{loc}}
* Org:: @code{.org @var{new-lc}, @var{fill}}
-* P2align:: @code{.p2align @var{abs-expr}, @var{abs-expr}, @var{abs-expr}}
+* P2align:: @code{.p2align [@var{abs-expr}[, @var{abs-expr}[, @var{abs-expr}]]]}
@ifset ELF
* PopSection:: @code{.popsection}
* Previous:: @code{.previous}
@end ifset
@node Align
-@section @code{.align @var{abs-expr}, @var{abs-expr}, @var{abs-expr}}
+@section @code{.align [@var{abs-expr}[, @var{abs-expr}[, @var{abs-expr}]]]}
@cindex padding the location counter
@cindex @code{align} directive
Pad the location counter (in the current subsection) to a particular storage
boundary. The first expression (which must be absolute) is the alignment
-required, as described below.
+required, as described below. If this expression is omitted then a default
+value of 0 is used, effectively disabling alignment requirements.
The second expression (also absolute) gives the fill value to be stored in the
padding bytes. It (and the comma) may be omitted. If it is omitted, the
The way the required alignment is specified varies from system to system.
For the arc, hppa, i386 using ELF, iq2000, m68k, or1k,
-s390, sparc, tic4x, tic80 and xtensa, the first expression is the
+s390, sparc, tic4x and xtensa, the first expression is the
alignment request in bytes. For example @samp{.align 8} advances
the location counter until it is a multiple of 8. If the location counter
is already a multiple of 8, no change is needed. For the tic54x, the
a zero byte. The ``z'' in @samp{.asciz} stands for ``zero''.
@node Balign
-@section @code{.balign[wl] @var{abs-expr}, @var{abs-expr}, @var{abs-expr}}
+@section @code{.balign[wl] [@var{abs-expr}[, @var{abs-expr}[, @var{abs-expr}]]]}
@cindex padding the location counter given number of bytes
@cindex @code{balign} directive
storage boundary. The first expression (which must be absolute) is the
alignment request in bytes. For example @samp{.balign 8} advances
the location counter until it is a multiple of 8. If the location counter
-is already a multiple of 8, no change is needed.
+is already a multiple of 8, no change is needed. If the expression is omitted
+then a default value of 0 is used, effectively disabling alignment requirements.
The second expression (also absolute) gives the fill value to be stored in the
padding bytes. It (and the comma) may be omitted. If it is omitted, the
@var{fill} defaults to zero.
@node P2align
-@section @code{.p2align[wl] @var{abs-expr}, @var{abs-expr}, @var{abs-expr}}
+@section @code{.p2align[wl] [@var{abs-expr}[, @var{abs-expr}[, @var{abs-expr}]]]}
@cindex padding the location counter given a power of two
@cindex @code{p2align} directive
number of low-order zero bits the location counter must have after
advancement. For example @samp{.p2align 3} advances the location
counter until it is a multiple of 8. If the location counter is already a
-multiple of 8, no change is needed.
+multiple of 8, no change is needed. If the expression is omitted then a
+default value of 0 is used, effectively disabling alignment requirements.
The second expression (also absolute) gives the fill value to be stored in the
padding bytes. It (and the comma) may be omitted. If it is omitted, the
file is the last value stored into it.
@ifset Z80
-On Z80 @code{set} is a real instruction, use
+On Z80 @code{set} is a real instruction, use @code{.set} or
@samp{@var{symbol} defl @var{expression}} instead.
@end ifset
projects / deliverable / binutils-gdb.git / blobdiff