diff options
| -rw-r--r-- | gas/ChangeLog | 7 | ||||
| -rw-r--r-- | gas/doc/Makefile.am | 1 | ||||
| -rw-r--r-- | gas/doc/Makefile.in | 1 | ||||
| -rw-r--r-- | gas/doc/all.texi | 1 | ||||
| -rw-r--r-- | gas/doc/c-xstormy16.texi | 104 |
5 files changed, 114 insertions, 0 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index 32cd61f..1d13136 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,10 @@ +2011-06-20 Nick Clifton <nickc@redhat.com> + + * doc/Makefile.am: (CPU_DOCS): Add c-xstormy16.texi. + * doc/Makefile.in: Regenerate. + * doc/all.texi: Set XSTORMY16. + * doc/c-xstormy16.texi: New file. + 2011-06-19 H.J. Lu <hongjiu.lu@intel.com> * configure.tgt: Support x32. diff --git a/gas/doc/Makefile.am b/gas/doc/Makefile.am index 6af117f..87017fc 100644 --- a/gas/doc/Makefile.am +++ b/gas/doc/Makefile.am @@ -70,6 +70,7 @@ CPU_DOCS = \ c-tilepro.texi \ c-vax.texi \ c-v850.texi \ + c-xstormy16.texi \ c-xtensa.texi \ c-z80.texi \ c-z8k.texi diff --git a/gas/doc/Makefile.in b/gas/doc/Makefile.in index d6ecb02..d7d0247 100644 --- a/gas/doc/Makefile.in +++ b/gas/doc/Makefile.in @@ -310,6 +310,7 @@ CPU_DOCS = \ c-tilepro.texi \ c-vax.texi \ c-v850.texi \ + c-xstormy16.texi \ c-xtensa.texi \ c-z80.texi \ c-z8k.texi diff --git a/gas/doc/all.texi b/gas/doc/all.texi index efea936..6f935ad 100644 --- a/gas/doc/all.texi +++ b/gas/doc/all.texi @@ -70,6 +70,7 @@ @set TILEPRO @set V850 @set VAX +@set XSTORMY16 @set XTENSA @set Z80 @set Z8000 diff --git a/gas/doc/c-xstormy16.texi b/gas/doc/c-xstormy16.texi new file mode 100644 index 0000000..31ba6f9 --- /dev/null +++ b/gas/doc/c-xstormy16.texi @@ -0,0 +1,104 @@ +@c Copyright 2010, 2011 Free Software Foundation, Inc. +@c This is part of the GAS manual. +@c For copying conditions, see the file as.texinfo. + +@node XSTORMY16-Dependent +@chapter XStormy16 Dependent Features + +@cindex XStormy16 support +@menu +* XStormy16 Syntax:: Syntax +* XStormy16 Directives:: Machine Directives +* XStormy16 Opcodes:: Pseudo-Opcodes +@end menu + +@node XStormy16 Syntax +@section Syntax +@menu +* XStormy16-Chars:: Special Characters +@end menu + +@node XStormy16-Chars +@subsection Special Characters + +@cindex line comment character, XStormy16 +@cindex XStormy16 line comment character +@samp{#} is the line comment character. If a @samp{#} appears as the +first character of a line, the whole line is treated as a comment, but +in this case the line can also be a logical line number directive +(@pxref{Comments}) or a preprocessor control command +(@pxref{Preprocessing}). + +@cindex comment character, XStormy16 +@cindex XStormy16 comment character +A semicolon (@samp{;}) can be used to start a comment that extends +from wherever the character appears on the line up to the end of the +line. + +@cindex line separator, XStormy16 +@cindex statement separator, XStormy16 +@cindex XStormy16 line separator + +The @samp{|} character can be used to separate statements on the same +line. + + +@node XStormy16 Directives +@section XStormy16 Machine Directives + +@cindex machine directives, XStormy16 +@cindex XStormy16 machine directives +@table @code + +@cindex @code{16bit_pointers} directive, XStormy16 +@item .16bit_pointers +Like the @option{--16bit-pointers} command line option this directive +indicates that the assembly code makes use of 16-bit pointers. + +@cindex @code{32bit_pointers} directive, XStormy16 +@item .32bit_pointers +Like the @option{--32bit-pointers} command line option this directive +indicates that the assembly code makes use of 32-bit pointers. + +@cindex @code{.no_pointers} directive, XStormy16 +@item .no_pointers +Like the @option{--no-pointers} command line option this directive +indicates that the assembly code does not makes use pointers. + +@end table + +@node XStormy16 Opcodes +@section XStormy16 Pseudo-Opcodes + +@cindex XStormy16 pseudo-opcodes +@cindex pseudo-opcodes for XStormy16 +@code{@value{AS}} implements all the standard XStormy16 opcodes. + +@code{@value{AS}} also implements the following pseudo ops: + +@table @code + +@cindex @code{@@lo} pseudo-op, XStormy16 +@item @@lo() +Computes the lower 16 bits of the given expression and stores it into +the immediate operand field of the given instruction. For example: + + @samp{add r6, @@lo(here - there)} + +computes the difference between the address of labels 'here' and +'there', takes the lower 16 bits of this difference and adds it to +register 6. + +@cindex @code{@@hi} pseudo-op, XStormy16 +@item @@hi() +Computes the higher 16 bits of the given expression and stores it into +the immediate operand field of the given instruction. For example: + + @samp{addc r7, @@hi(here - there)} + +computes the difference between the address of labels 'here' and +'there', takes the upper 16 bits of this difference, shifts it down 16 +bits and then adds it, along with the carry bit, to the value in +register 7. + +@end table |