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diff --git a/binutils-2.24/gas/doc/c-hppa.texi b/binutils-2.24/gas/doc/c-hppa.texi deleted file mode 100644 index 2bb1ae4f..00000000 --- a/binutils-2.24/gas/doc/c-hppa.texi +++ /dev/null @@ -1,301 +0,0 @@ -@c Copyright 1991, 1992, 1993, 1994, 1995, 1998, 2004, 2011 -@c Free Software Foundation, Inc. -@c This is part of the GAS manual. -@c For copying conditions, see the file as.texinfo. -@page -@node HPPA-Dependent -@chapter HPPA Dependent Features - -@cindex support -@menu -* HPPA Notes:: Notes -* HPPA Options:: Options -* HPPA Syntax:: Syntax -* HPPA Floating Point:: Floating Point -* HPPA Directives:: HPPA Machine Directives -* HPPA Opcodes:: Opcodes -@end menu - -@node HPPA Notes -@section Notes -As a back end for @sc{gnu} @sc{cc} @code{@value{AS}} has been throughly tested and should -work extremely well. We have tested it only minimally on hand written assembly -code and no one has tested it much on the assembly output from the HP -compilers. - -The format of the debugging sections has changed since the original -@code{@value{AS}} port (version 1.3X) was released; therefore, -you must rebuild all HPPA objects and libraries with the new -assembler so that you can debug the final executable. - -The HPPA @code{@value{AS}} port generates a small subset of the relocations -available in the SOM and ELF object file formats. Additional relocation -support will be added as it becomes necessary. - -@node HPPA Options -@section Options -@code{@value{AS}} has no machine-dependent command-line options for the HPPA. - -@cindex HPPA Syntax -@node HPPA Syntax -@section Syntax -The assembler syntax closely follows the HPPA instruction set -reference manual; assembler directives and general syntax closely follow the -HPPA assembly language reference manual, with a few noteworthy differences. - -First, a colon may immediately follow a label definition. This is -simply for compatibility with how most assembly language programmers -write code. - -Some obscure expression parsing problems may affect hand written code which -uses the @code{spop} instructions, or code which makes significant -use of the @code{!} line separator. - -@code{@value{AS}} is much less forgiving about missing arguments and other -similar oversights than the HP assembler. @code{@value{AS}} notifies you -of missing arguments as syntax errors; this is regarded as a feature, not a -bug. - -Finally, @code{@value{AS}} allows you to use an external symbol without -explicitly importing the symbol. @emph{Warning:} in the future this will be -an error for HPPA targets. - -Special characters for HPPA targets include: - -@samp{;} is the line comment character. - -@samp{!} can be used instead of a newline to separate statements. - -Since @samp{$} has no special meaning, you may use it in symbol names. - -@node HPPA Floating Point -@section Floating Point -@cindex floating point, HPPA (@sc{ieee}) -@cindex HPPA floating point (@sc{ieee}) -The HPPA family uses @sc{ieee} floating-point numbers. - -@node HPPA Directives -@section HPPA Assembler Directives - -@code{@value{AS}} for the HPPA supports many additional directives for -compatibility with the native assembler. This section describes them only -briefly. For detailed information on HPPA-specific assembler directives, see -@cite{HP9000 Series 800 Assembly Language Reference Manual} (HP 92432-90001). - -@cindex HPPA directives not supported -@code{@value{AS}} does @emph{not} support the following assembler directives -described in the HP manual: - -@example -.endm .liston -.enter .locct -.leave .macro -.listoff -@end example - -@cindex @code{.param} on HPPA -Beyond those implemented for compatibility, @code{@value{AS}} supports one -additional assembler directive for the HPPA: @code{.param}. It conveys -register argument locations for static functions. Its syntax closely follows -the @code{.export} directive. - -@cindex HPPA-only directives -These are the additional directives in @code{@value{AS}} for the HPPA: - -@table @code -@item .block @var{n} -@itemx .blockz @var{n} -Reserve @var{n} bytes of storage, and initialize them to zero. - -@item .call -Mark the beginning of a procedure call. Only the special case with @emph{no -arguments} is allowed. - -@item .callinfo [ @var{param}=@var{value}, @dots{} ] [ @var{flag}, @dots{} ] -Specify a number of parameters and flags that define the environment for a -procedure. - -@var{param} may be any of @samp{frame} (frame size), @samp{entry_gr} (end of -general register range), @samp{entry_fr} (end of float register range), -@samp{entry_sr} (end of space register range). - -The values for @var{flag} are @samp{calls} or @samp{caller} (proc has -subroutines), @samp{no_calls} (proc does not call subroutines), @samp{save_rp} -(preserve return pointer), @samp{save_sp} (proc preserves stack pointer), -@samp{no_unwind} (do not unwind this proc), @samp{hpux_int} (proc is interrupt -routine). - -@item .code -Assemble into the standard section called @samp{$TEXT$}, subsection -@samp{$CODE$}. - -@ifset SOM -@item .copyright "@var{string}" -In the SOM object format, insert @var{string} into the object code, marked as a -copyright string. -@end ifset - -@ifset ELF -@item .copyright "@var{string}" -In the ELF object format, insert @var{string} into the object code, marked as a -version string. -@end ifset - -@item .enter -Not yet supported; the assembler rejects programs containing this directive. - -@item .entry -Mark the beginning of a procedure. - -@item .exit -Mark the end of a procedure. - -@item .export @var{name} [ ,@var{typ} ] [ ,@var{param}=@var{r} ] -Make a procedure @var{name} available to callers. @var{typ}, if present, must -be one of @samp{absolute}, @samp{code} (ELF only, not SOM), @samp{data}, -@samp{entry}, @samp{data}, @samp{entry}, @samp{millicode}, @samp{plabel}, -@samp{pri_prog}, or @samp{sec_prog}. - -@var{param}, if present, provides either relocation information for the -procedure arguments and result, or a privilege level. @var{param} may be -@samp{argw@var{n}} (where @var{n} ranges from @code{0} to @code{3}, and -indicates one of four one-word arguments); @samp{rtnval} (the procedure's -result); or @samp{priv_lev} (privilege level). For arguments or the result, -@var{r} specifies how to relocate, and must be one of @samp{no} (not -relocatable), @samp{gr} (argument is in general register), @samp{fr} (in -floating point register), or @samp{fu} (upper half of float register). -For @samp{priv_lev}, @var{r} is an integer. - -@item .half @var{n} -Define a two-byte integer constant @var{n}; synonym for the portable -@code{@value{AS}} directive @code{.short}. - -@item .import @var{name} [ ,@var{typ} ] -Converse of @code{.export}; make a procedure available to call. The arguments -use the same conventions as the first two arguments for @code{.export}. - -@item .label @var{name} -Define @var{name} as a label for the current assembly location. - -@item .leave -Not yet supported; the assembler rejects programs containing this directive. - -@item .origin @var{lc} -Advance location counter to @var{lc}. Synonym for the @code{@value{AS}} -portable directive @code{.org}. - -@item .param @var{name} [ ,@var{typ} ] [ ,@var{param}=@var{r} ] -@c Not in HP manual; @sc{gnu} HPPA extension -Similar to @code{.export}, but used for static procedures. - -@item .proc -Use preceding the first statement of a procedure. - -@item .procend -Use following the last statement of a procedure. - -@item @var{label} .reg @var{expr} -@c ?? Not in HP manual (Jan 1988 vn) -Synonym for @code{.equ}; define @var{label} with the absolute expression -@var{expr} as its value. - -@item .space @var{secname} [ ,@var{params} ] -Switch to section @var{secname}, creating a new section by that name if -necessary. You may only use @var{params} when creating a new section, not -when switching to an existing one. @var{secname} may identify a section by -number rather than by name. - -If specified, the list @var{params} declares attributes of the section, -identified by keywords. The keywords recognized are @samp{spnum=@var{exp}} -(identify this section by the number @var{exp}, an absolute expression), -@samp{sort=@var{exp}} (order sections according to this sort key when linking; -@var{exp} is an absolute expression), @samp{unloadable} (section contains no -loadable data), @samp{notdefined} (this section defined elsewhere), and -@samp{private} (data in this section not available to other programs). - -@item .spnum @var{secnam} -@c ?? Not in HP manual (Jan 1988) -Allocate four bytes of storage, and initialize them with the section number of -the section named @var{secnam}. (You can define the section number with the -HPPA @code{.space} directive.) - -@cindex @code{string} directive on HPPA -@item .string "@var{str}" -Copy the characters in the string @var{str} to the object file. -@xref{Strings,,Strings}, for information on escape sequences you can use in -@code{@value{AS}} strings. - -@emph{Warning!} The HPPA version of @code{.string} differs from the -usual @code{@value{AS}} definition: it does @emph{not} write a zero byte -after copying @var{str}. - -@item .stringz "@var{str}" -Like @code{.string}, but appends a zero byte after copying @var{str} to object -file. - -@item .subspa @var{name} [ ,@var{params} ] -@itemx .nsubspa @var{name} [ ,@var{params} ] -Similar to @code{.space}, but selects a subsection @var{name} within the -current section. You may only specify @var{params} when you create a -subsection (in the first instance of @code{.subspa} for this @var{name}). - -If specified, the list @var{params} declares attributes of the subsection, -identified by keywords. The keywords recognized are @samp{quad=@var{expr}} -(``quadrant'' for this subsection), @samp{align=@var{expr}} (alignment for -beginning of this subsection; a power of two), @samp{access=@var{expr}} (value -for ``access rights'' field), @samp{sort=@var{expr}} (sorting order for this -subspace in link), @samp{code_only} (subsection contains only code), -@samp{unloadable} (subsection cannot be loaded into memory), @samp{comdat} -(subsection is comdat), @samp{common} (subsection is common block), -@samp{dup_comm} (subsection may have duplicate names), or @samp{zero} -(subsection is all zeros, do not write in object file). - -@code{.nsubspa} always creates a new subspace with the given name, even -if one with the same name already exists. - -@samp{comdat}, @samp{common} and @samp{dup_comm} can be used to implement -various flavors of one-only support when using the SOM linker. The SOM -linker only supports specific combinations of these flags. The details -are not documented. A brief description is provided here. - -@samp{comdat} provides a form of linkonce support. It is useful for -both code and data subspaces. A @samp{comdat} subspace has a key symbol -marked by the @samp{is_comdat} flag or @samp{ST_COMDAT}. Only the first -subspace for any given key is selected. The key symbol becomes universal -in shared links. This is similar to the behavior of @samp{secondary_def} -symbols. - -@samp{common} provides Fortran named common support. It is only useful -for data subspaces. Symbols with the flag @samp{is_common} retain this -flag in shared links. Referencing a @samp{is_common} symbol in a shared -library from outside the library doesn't work. Thus, @samp{is_common} -symbols must be output whenever they are needed. - -@samp{common} and @samp{dup_comm} together provide Cobol common support. -The subspaces in this case must all be the same length. Otherwise, this -support is similar to the Fortran common support. - -@samp{dup_comm} by itself provides a type of one-only support for code. -Only the first @samp{dup_comm} subspace is selected. There is a rather -complex algorithm to compare subspaces. Code symbols marked with the -@samp{dup_common} flag are hidden. This support was intended for "C++ -duplicate inlines". - -A simplified technique is used to mark the flags of symbols based on -the flags of their subspace. A symbol with the scope SS_UNIVERSAL and -type ST_ENTRY, ST_CODE or ST_DATA is marked with the corresponding -settings of @samp{comdat}, @samp{common} and @samp{dup_comm} from the -subspace, respectively. This avoids having to introduce additional -directives to mark these symbols. The HP assembler sets @samp{is_common} -from @samp{common}. However, it doesn't set the @samp{dup_common} from -@samp{dup_comm}. It doesn't have @samp{comdat} support. - -@item .version "@var{str}" -Write @var{str} as version identifier in object code. -@end table - -@node HPPA Opcodes -@section Opcodes -For detailed information on the HPPA machine instruction set, see -@cite{PA-RISC Architecture and Instruction Set Reference Manual} -(HP 09740-90039). |