diff options
Diffstat (limited to 'gas/doc/as.texinfo')
| -rw-r--r-- | gas/doc/as.texinfo | 137 |
1 files changed, 134 insertions, 3 deletions
diff --git a/gas/doc/as.texinfo b/gas/doc/as.texinfo index 7232100..ce88642 100644 --- a/gas/doc/as.texinfo +++ b/gas/doc/as.texinfo @@ -201,6 +201,11 @@ Here is a brief summary of how to invoke @code{@value{AS}}. For details, @ifset A29K @c am29k has no machine-dependent assembler options @end ifset +@c start-sanitize-arc +@ifset ARC + [ -mbig-endian | -mlittle-endian ] +@end ifset +@c end-sanitize-arc @ifset H8 @c Hitachi family chips have no machine-dependent assembler options @end ifset @@ -316,6 +321,25 @@ Standard input, or source files to assemble. @end table +@ifset ARC +The following options are available when @value{AS} is configured for +an ARC processor. + +@table @code + +@cindex ARC endianness +@cindex endianness, ARC +@cindex big endian output, ARC +@item -mbig-endian +Generate ``big endian'' format output. + +@cindex little endian output, ARC +@item -mlittle-endian +Generate ``little endian'' format output. + +@end table +@end ifset + @ifset I960 The following options are available when @value{AS} is configured for the Intel 80960 processor. @@ -920,6 +944,11 @@ target is allowed to redefine the local label prefix. @ifset HPPA On the HPPA local labels begin with @samp{L$}. @end ifset +@c start-sanitize-arc +@ifset ARC +On the ARC local labels begin with @samp{.L}. +@end ifset +@c end-sanitize-arc @node o @section Name the Object File: @code{-o} @@ -1134,6 +1163,11 @@ This means you may not nest these comments. @cindex line comment character Anything from the @dfn{line comment} character to the next newline is considered a comment and is ignored. The line comment character is +@c start-sanitize-arc +@ifset ARC +@samp{;} on the ARC; +@end ifset +@c end-sanitize-arc @ifset VAX @samp{#} on the Vax; @end ifset @@ -1598,6 +1632,11 @@ Hitachi SH, and AMD 29K architectures, the letter must be one of the letters @samp{DFPRSX} (in upper or lower case). +@c start-sanitize-arc +On the ARC, the letter one of the letters @samp{DFRS} +(in upper or lower case). +@c end-sanitize-arc + On the Intel 960 architecture, the letter must be one of the letters @samp{DFT} (in upper or lower case). @@ -1607,6 +1646,11 @@ On the HPPA architecture, the letter must be @samp{E} (upper case only). @ifset A29K One of the letters @samp{DFPRSX} (in upper or lower case). @end ifset +@c start-sanitize-arc +@ifset ARC +One of the letters @samp{DFRS} (in upper or lower case). +@end ifset +@c end-sanitize-arc @ifset H8 One of the letters @samp{DFPRSX} (in upper or lower case). @end ifset @@ -3869,6 +3913,11 @@ include details on any machine's instruction set. For details on that subject, see the hardware manufacturer's manual. @menu +@c start-sanitize-arc +@ifset ARC +* ARC-Dependent:: ARC Dependent Features +@end ifset +@c end-sanitize-arc @ifset VAX * Vax-Dependent:: VAX Dependent Features @end ifset @@ -3917,7 +3966,84 @@ subject, see the hardware manufacturer's manual. @c major node below. Node defaulting in makeinfo requires adjacency of @c node and sectioning commands; hence the repetition of @chapter BLAH @c in both conditional blocks. -@c + +@c start-sanitize-arc +@ifset ARC +@ifset GENERIC +@page +@node ARC-Dependent +@chapter ARC Dependent Features +@end ifset +@ifclear GENERIC +@node Machine Dependencies +@chapter ARC Dependent Features +@end ifclear + +@cindex ARC support +@menu +* ARC-Opts:: Options +* ARC-Float:: Floating Point +* ARC-Directives:: Sparc Machine Directives +@end menu + +@node ARC-Opts +@section Options + +@cindex options for ARC +@cindex ARC options +@cindex architectures, ARC +@cindex ARC architectures +The ARC chip family includes several successive levels (or other +variants) of chip, using the same core instruction set, but including +a few additional instructions at each level. + +By default, @code{@value{AS}} assumes the core instruction set (ARC +base). The @code{.cpu} pseudo-op is used to select a different variant. + +@table @code +@cindex @code{-mbig-endian} option (ARC) +@cindex @code{-mlittle-endian} option (ARC) +@cindex ARC big-endian output +@cindex ARC little-endian output +@cindex big-endian output, ARC +@cindex little-endian output, ARC +@item -mbig-endian +@itemx -mlittle-endian +Any @sc{arc} configuration of @code{@value{AS}} can select big-endian or +little-endian output at run time (unlike most other @sc{gnu} development +tools, which must be configured for one or the other). Use +@samp{-mbig-endian} to select big-endian output, and @samp{-mlittle-endian} +for little-endian. +@end table + +@node ARC-Float +@section Floating Point + +@cindex floating point, ARC (@sc{ieee}) +@cindex ARC floating point (@sc{ieee}) +The ARC cpu family currently does not have hardware floating point +support. Software floating point support is provided by @code{GCC} +and uses @sc{ieee} floating-point numbers. + +@node ARC-Directives +@section ARC Machine Directives + +@cindex ARC machine directives +@cindex machine directives, ARC +The ARC version of @code{@value{AS}} supports the following additional +machine directives: + +@table @code +@item .cpu +@cindex @code{cpu} directive, SPARC +This must be followed by the desired cpu. It must be one of +@code{base}, @code{host}, @code{graphics}, or @code{audio}. + +@end table + +@end ifset +@c end-sanitize-arc + @ifset VAX @ifset GENERIC @node Vax-Dependent @@ -4241,6 +4367,7 @@ Vax bit fields can not be assembled with @code{@value{AS}}. Someone can add the required code if they really need it. @end ifset + @ifset A29K @ifset GENERIC @page @@ -4908,7 +5035,9 @@ Register indirect with post-increment @cindex floating point, H8/500 (@sc{ieee}) @cindex H8/500 floating point (@sc{ieee}) -The H8/500 family uses @sc{ieee} floating-point numbers. +The H8/500 family has no hardware floating point, but the @code{.float} +directive generates @sc{ieee} floating-point numbers for compatibility +with other development tools. @node H8/500 Directives @section H8/500 Machine Directives @@ -5437,7 +5566,9 @@ Immediate data @cindex floating point, SH (@sc{ieee}) @cindex SH floating point (@sc{ieee}) -The SH family uses @sc{ieee} floating-point numbers. +The SH family has no hardware floating point, but the @code{.float} +directive generates @sc{ieee} floating-point numbers for compatibility +with other development tools. @node SH Directives @section SH Machine Directives |