diff options
Diffstat (limited to 'gas/doc/as.texinfo')
| -rw-r--r-- | gas/doc/as.texinfo | 278 |
1 files changed, 19 insertions, 259 deletions
diff --git a/gas/doc/as.texinfo b/gas/doc/as.texinfo index 43286e9..dfd436f 100644 --- a/gas/doc/as.texinfo +++ b/gas/doc/as.texinfo @@ -32,7 +32,7 @@ @set COFF-ELF @end ifset @ifset AOUT -@set aout-bout +@set aout @end ifset @ifset ARM/Thumb @set ARM @@ -40,9 +40,6 @@ @ifset Blackfin @set Blackfin @end ifset -@ifset BOUT -@set aout-bout -@end ifset @ifset H8/300 @set H8 @end ifset @@ -337,14 +334,6 @@ gcc(1), ld(1), and the Info entries for @file{binutils} and @file{ld}. [@b{--32}|@b{--x32}|@b{--64}] [@b{-n}] [@b{-march}=@var{CPU}[+@var{EXTENSION}@dots{}]] [@b{-mtune}=@var{CPU}] @end ifset -@ifset I960 - -@emph{Target i960 options:} -@c see md_parse_option in tc-i960.c - [@b{-ACA}|@b{-ACA_A}|@b{-ACB}|@b{-ACC}|@b{-AKA}|@b{-AKB}| - @b{-AKC}|@b{-AMC}] - [@b{-b}] [@b{-no-relax}] -@end ifset @ifset IA64 @emph{Target IA-64 options:} @@ -1069,24 +1058,6 @@ an i386 processor. @end ifset @c man begin OPTIONS -@ifset I960 -The following options are available when @value{AS} is configured for the -Intel 80960 processor. - -@table @gcctabopt -@item -ACA | -ACA_A | -ACB | -ACC | -AKA | -AKB | -AKC | -AMC -Specify which variant of the 960 architecture is the target. - -@item -b -Add code to collect statistics about branches taken. - -@item -no-relax -Do not alter compare-and-branch instructions for long displacements; -error if necessary. - -@end table -@end ifset - @ifset IP2K The following options are available when @value{AS} is configured for the Ubicom IP2K series. @@ -1995,10 +1966,6 @@ For the @value{TARGET} target, @command{@value{AS}} is configured to produce @value{OBJ-NAME} format object files. @end ifclear @c The following should exhaust all configs that set MULTI-OBJ, ideally -@ifset I960 -On the @value{TARGET}, @command{@value{AS}} can be configured to produce either -@code{b.out} or COFF format object files. -@end ifset @ifset HPPA On the @value{TARGET}, @command{@value{AS}} can be configured to produce either SOM or ELF format object files. @@ -2104,16 +2071,7 @@ is itself synthesized from other files. @command{@value{AS}} understands the @kindex .o Every time you run @command{@value{AS}} it produces an output file, which is your assembly language program translated into numbers. This file -is the object file. Its default name is -@ifclear BOUT -@code{a.out}. -@end ifclear -@ifset BOUT -@ifset GENERIC -@code{a.out}, or -@end ifset -@code{b.out} when @command{@value{AS}} is configured for the Intel 80960. -@end ifset +is the object file. Its default name is @code{a.out}. You can give it another name by using the @option{-o} option. Conventionally, object file names end with @file{.o}. The default name is used for historical reasons: older assemblers were capable of assembling self-contained programs @@ -2447,8 +2405,8 @@ displayed for a given single line of source input. The default value is 4. @cindex MRI compatibility mode The @option{-M} or @option{--mri} option selects MRI compatibility mode. This changes the syntax and pseudo-op handling of @command{@value{AS}} to make it -compatible with the @code{ASM68K} or the @code{ASM960} (depending upon the -configured target) assembler from Microtec Research. The exact nature of the +compatible with the @code{ASM68K} assembler from Microtec Research. +The exact nature of the MRI syntax will not be documented here; see the MRI manuals for more information. Note in particular that the handling of macros and macro arguments is somewhat different. The purpose of this option is to permit @@ -2545,30 +2503,6 @@ The m68k @code{OPT} @code{D} option is the default, unlike the MRI assembler. The m68k @code{XREF} pseudo-op is ignored. -@item @code{.debug} pseudo-op - -The i960 @code{.debug} pseudo-op is not supported. - -@item @code{.extended} pseudo-op - -The i960 @code{.extended} pseudo-op is not supported. - -@item @code{.list} pseudo-op. - -The various options of the i960 @code{.list} pseudo-op are not supported. - -@item @code{.optimize} pseudo-op - -The i960 @code{.optimize} pseudo-op is not supported. - -@item @code{.output} pseudo-op - -The i960 @code{.output} pseudo-op is not supported. - -@item @code{.setreal} pseudo-op - -The i960 @code{.setreal} pseudo-op is not supported. - @end itemize @node MD @@ -2602,23 +2536,7 @@ disable this behaviour. @cindex naming object file @cindex object file name There is always one object file output when you run @command{@value{AS}}. By -default it has the name -@ifset GENERIC -@ifset I960 -@file{a.out} (or @file{b.out}, for Intel 960 targets only). -@end ifset -@ifclear I960 -@file{a.out}. -@end ifclear -@end ifset -@ifclear GENERIC -@ifset I960 -@file{b.out}. -@end ifset -@ifclear I960 -@file{a.out}. -@end ifclear -@end ifclear +default it has the name @file{a.out}. You use this option (which takes exactly one filename) to give the object file a different name. @@ -3153,9 +3071,6 @@ are floating point numbers, described below. * Bignums:: Bignums * Flonums:: Flonums @ifclear GENERIC -@ifset I960 -* Bit Fields:: Bit Fields -@end ifset @end ifclear @end menu @@ -3230,16 +3145,12 @@ A letter, to tell @command{@value{AS}} the rest of the number is a flonum. 4.2 assembler seems to allow any of @samp{defghDEFGH}.) @end ignore -On the H8/300, Renesas / SuperH SH, -and AMD 29K architectures, the letter must be +On the H8/300 and Renesas / SuperH SH architectures, the letter must be one of the letters @samp{DFPRSX} (in upper or lower case). On the ARC, the letter must be one of the letters @samp{DFRS} (in upper or lower case). -On the Intel 960 architecture, the letter must be -one of the letters @samp{DFT} (in upper or lower case). - On the HPPA architecture, the letter must be @samp{E} (upper case only). @end ifset @ifclear GENERIC @@ -3252,9 +3163,6 @@ One of the letters @samp{DFPRSX} (in upper or lower case). @ifset HPPA The letter @samp{E} (upper case only). @end ifset -@ifset I960 -One of the letters @samp{DFT} (in upper or lower case). -@end ifset @end ifclear @item @@ -3290,41 +3198,6 @@ present. The floating point number has the usual base-10 value. independently of any floating point hardware in the computer running @command{@value{AS}}. -@ifclear GENERIC -@ifset I960 -@c Bit fields are written as a general facility but are also controlled -@c by a conditional-compilation flag---which is as of now (21mar91) -@c turned on only by the i960 config of GAS. -@node Bit Fields -@subsubsection Bit Fields - -@cindex bit fields -@cindex constants, bit field -You can also define numeric constants as @dfn{bit fields}. -Specify two numbers separated by a colon--- -@example -@var{mask}:@var{value} -@end example -@noindent -@command{@value{AS}} applies a bitwise @sc{and} between @var{mask} and -@var{value}. - -The resulting number is then packed -@ifset GENERIC -@c this conditional paren in case bit fields turned on elsewhere than 960 -(in host-dependent byte order) -@end ifset -into a field whose width depends on which assembler directive has the -bit-field as its argument. Overflow (a result from the bitwise and -requiring more binary digits to represent) is not an error; instead, -more constants are generated, of the specified width, beginning with the -least significant digits.@refill - -The directives @code{.byte}, @code{.hword}, @code{.int}, @code{.long}, -@code{.short}, and @code{.word} accept bit-field arguments. -@end ifset -@end ifclear - @node Sections @chapter Sections and Relocation @cindex sections @@ -3486,7 +3359,7 @@ use of @command{@value{AS}} and have no meaning except during assembly. @cindex sections, named @item named sections @end ifset -@ifset aout-bout +@ifset aout @cindex text section @cindex data section @itemx text section @@ -3495,7 +3368,7 @@ use of @command{@value{AS}} and have no meaning except during assembly. These sections hold your program. @command{@value{AS}} and @code{@value{LD}} treat them as separate but equal sections. Anything you can say of one section is true of another. -@c @ifset aout-bout +@c @ifset aout When the program is running, however, it is customary for the text section to be unalterable. The text section is often shared among processes: it contains @@ -3615,7 +3488,7 @@ it in the expr section. @cindex numbered subsections @cindex grouping data -@ifset aout-bout +@ifset aout Assembled bytes @ifset COFF-ELF conventionally @@ -3627,10 +3500,10 @@ You may have separate groups of data in named sections @end ifset @ifclear GENERIC -@ifclear aout-bout +@ifclear aout data in named sections @end ifclear -@ifset aout-bout +@ifset aout text or data @end ifset @end ifclear @@ -3659,14 +3532,6 @@ On the H8/300 platform, each subsection is zero-padded to a word boundary (two bytes). The same is true on the Renesas SH. @end ifset -@ifset I960 -@c FIXME section padding (alignment)? -@c Rich Pixley says padding here depends on target obj code format; that -@c doesn't seem particularly useful to say without further elaboration, -@c so for now I say nothing about it. If this is a generic BFD issue, -@c these paragraphs might need to vanish from this manual, and be -@c discussed in BFD chapter of binutils (or some such). -@end ifset @end ifclear Subsections appear in your object file in numeric order, lowest numbered @@ -3990,19 +3855,9 @@ would want. @menu * Symbol Value:: Value * Symbol Type:: Type -@ifset aout-bout -@ifset GENERIC +@ifset aout * a.out Symbols:: Symbol Attributes: @code{a.out} @end ifset -@ifclear GENERIC -@ifclear BOUT -* a.out Symbols:: Symbol Attributes: @code{a.out} -@end ifclear -@ifset BOUT -* a.out Symbols:: Symbol Attributes: @code{a.out}, @code{b.out} -@end ifset -@end ifclear -@end ifset @ifset COFF * COFF Symbols:: Symbol Attributes for COFF @end ifset @@ -4043,39 +3898,13 @@ information, any flag settings indicating that a symbol is external, and (optionally), other information for linkers and debuggers. The exact format depends on the object-code output format in use. -@ifset aout-bout -@ifclear GENERIC -@ifset BOUT -@c The following avoids a "widow" subsection title. @group would be -@c better if it were available outside examples. -@need 1000 -@node a.out Symbols -@subsection Symbol Attributes: @code{a.out}, @code{b.out} - -@cindex @code{b.out} symbol attributes -@cindex symbol attributes, @code{b.out} -These symbol attributes appear only when @command{@value{AS}} is configured for -one of the Berkeley-descended object output formats---@code{a.out} or -@code{b.out}. - -@end ifset -@ifclear BOUT -@node a.out Symbols -@subsection Symbol Attributes: @code{a.out} - -@cindex @code{a.out} symbol attributes -@cindex symbol attributes, @code{a.out} - -@end ifclear -@end ifclear -@ifset GENERIC +@ifset aout @node a.out Symbols @subsection Symbol Attributes: @code{a.out} @cindex @code{a.out} symbol attributes @cindex symbol attributes, @code{a.out} -@end ifset @menu * Symbol Desc:: Descriptor * Symbol Other:: Other @@ -4410,7 +4239,7 @@ Some machine configurations provide additional directives. @ifset COFF * Def:: @code{.def @var{name}} @end ifset -@ifset aout-bout +@ifset aout * Desc:: @code{.desc @var{symbol}, @var{abs-expression}} @end ifset @ifset COFF @@ -4594,10 +4423,6 @@ quit also. One day @code{.abort} will not be supported. When producing COFF output, @command{@value{AS}} accepts this directive as a synonym for @samp{.abort}. -@ifset BOUT -When producing @code{b.out} output, @command{@value{AS}} accepts this directive, -but ignores it. -@end ifset @end ifset @node Align @@ -4624,7 +4449,7 @@ required alignment; this can be useful if you want the alignment to be filled with no-op instructions when appropriate. The way the required alignment is specified varies from system to system. -For the arc, hppa, i386 using ELF, i860, iq2000, m68k, or1k, +For the arc, hppa, i386 using ELF, iq2000, m68k, or1k, s390, sparc, tic4x, tic80 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 @@ -5163,15 +4988,9 @@ The byte ordering is target dependent. @cindex debugging COFF symbols Begin defining debugging information for a symbol @var{name}; the definition extends until the @code{.endef} directive is encountered. -@ifset BOUT - -This directive is only observed when @command{@value{AS}} is configured for COFF -format output; when producing @code{b.out}, @samp{.def} is recognized, -but ignored. -@end ifset @end ifset -@ifset aout-bout +@ifset aout @node Desc @section @code{.desc @var{symbol}, @var{abs-expression}} @@ -5199,12 +5018,6 @@ it, but produces no output, when configured for COFF. This directive is generated by compilers to include auxiliary debugging information in the symbol table. It is only permitted inside @code{.def}/@code{.endef} pairs. -@ifset BOUT - -@samp{.dim} is only meaningful when generating COFF format output; when -@command{@value{AS}} is generating @code{b.out}, it accepts this directive but -ignores it. -@end ifset @end ifset @node Double @@ -5265,12 +5078,6 @@ process anything in the file past the @code{.end} directive. @cindex @code{endef} directive This directive flags the end of a symbol definition begun with @code{.def}. -@ifset BOUT - -@samp{.endef} is only meaningful when generating COFF format output; if -@command{@value{AS}} is configured to generate @code{b.out}, it accepts this -directive but ignores it. -@end ifset @end ifset @node Endfunc @@ -5801,7 +5608,7 @@ assemblers, but ignores it. @cindex @code{line} directive @cindex logical line number -@ifset aout-bout +@ifset aout Change the logical line number. @var{line-number} must be an absolute expression. The next line has that logical line number. Therefore any other statements on the current line (after a statement separator character) are @@ -5886,12 +5693,6 @@ must be an absolute expression. The next line has that logical line number, so any other statements on the current line (after a statement separator character @code{;}) are reported as on logical line number @var{line-number} @minus{} 1. -@ifset BOUT - -This directive is accepted, but ignored, when @command{@value{AS}} is -configured for @code{b.out}; its effect is only associated with COFF -output format. -@end ifset @end ifset @node Loc @@ -6220,7 +6021,7 @@ instruction size limit is set to the maximum supported size. @node Octa @section @code{.octa @var{bignums}} -@c FIXME: double size emitted for "octa" on i960, others? Or warn? +@c FIXME: double size emitted for "octa" on some? Or warn? @cindex @code{octa} directive @cindex integer, 16-byte @cindex sixteen byte integer @@ -6535,12 +6336,6 @@ Set the storage-class value for a symbol. This directive may only be used inside a @code{.def}/@code{.endef} pair. Storage class may flag whether a symbol is static or external, or it may record further symbolic debugging information. -@ifset BOUT - -The @samp{.scl} directive is primarily associated with COFF output; when -configured to generate @code{b.out} output format, @command{@value{AS}} -accepts this directive but ignores it. -@end ifset @end ifset @ifset COFF-ELF @@ -6900,11 +6695,6 @@ For COFF targets, the @code{.size} directive is only permitted inside .size @var{expression} @end smallexample -@ifset BOUT -@samp{.size} is only meaningful when generating COFF format output; when -@command{@value{AS}} is generating @code{b.out}, it accepts this directive but -ignores it. -@end ifset @end ifset @ifset ELF @@ -7172,12 +6962,6 @@ This directive is generated by compilers to include auxiliary debugging information in the symbol table. It is only permitted inside @code{.def}/@code{.endef} pairs. Tags are used to link structure definitions in the symbol table with instances of those structures. -@ifset BOUT - -@samp{.tag} is only used when generating COFF format output; when -@command{@value{AS}} is generating @code{b.out}, it accepts this directive but -ignores it. -@end ifset @end ifset @node Text @@ -7225,11 +7009,6 @@ For COFF targets, this directive is permitted only within This records the integer @var{int} as the type attribute of a symbol table entry. -@ifset BOUT -@samp{.type} is associated only with COFF format output; when -@command{@value{AS}} is configured for @code{b.out} output, it accepts this -directive but ignores it. -@end ifset @end ifset @ifset ELF @@ -7328,11 +7107,6 @@ symbolic debugging format. @xref{Sleb128, ,@code{.sleb128}}. This directive, permitted only within @code{.def}/@code{.endef} pairs, records the address @var{addr} as the value attribute of a symbol table entry. -@ifset BOUT - -@samp{.val} is used only for COFF output; when @command{@value{AS}} is -configured for @code{b.out}, it accepts this directive but ignores it. -@end ifset @end ifset @ifset ELF @@ -7422,7 +7196,7 @@ The size of the number emitted, and its byte order, depend on what target computer the assembly is for. @end ifset -@c on amd29k, i960, sparc the "special treatment to support compilers" doesn't +@c on sparc the "special treatment to support compilers" doesn't @c happen---32-bit addressability, period; no long/short jumps. @ifset DIFF-TBL-KLUGE @cindex difference tables altered @@ -7764,12 +7538,6 @@ subject, see the hardware manufacturer's manual. @ifset I80386 * i386-Dependent:: Intel 80386 and AMD x86-64 Dependent Features @end ifset -@ifset I860 -* i860-Dependent:: Intel 80860 Dependent Features -@end ifset -@ifset I960 -* i960-Dependent:: Intel 80960 Dependent Features -@end ifset @ifset IA64 * IA-64-Dependent:: Intel IA-64 Dependent Features @end ifset @@ -7979,14 +7747,6 @@ family. @include c-i386.texi @end ifset -@ifset I860 -@include c-i860.texi -@end ifset - -@ifset I960 -@include c-i960.texi -@end ifset - @ifset IA64 @include c-ia64.texi @end ifset |