diff options
Diffstat (limited to 'gas/doc')
| -rw-r--r-- | gas/doc/Makefile.am | 1 | ||||
| -rw-r--r-- | gas/doc/Makefile.in | 5 | ||||
| -rw-r--r-- | gas/doc/all.texi | 1 | ||||
| -rw-r--r-- | gas/doc/as.texinfo | 7 | ||||
| -rw-r--r-- | gas/doc/c-cr16.texi | 80 |
5 files changed, 92 insertions, 2 deletions
diff --git a/gas/doc/Makefile.am b/gas/doc/Makefile.am index 9616505..4f6ff92 100644 --- a/gas/doc/Makefile.am +++ b/gas/doc/Makefile.am @@ -34,6 +34,7 @@ CPU_DOCS = \ c-arm.texi \ c-avr.texi \ c-bfin.texi \ + c-cr16.texi \ c-d10v.texi \ c-cris.texi \ c-h8300.texi \ diff --git a/gas/doc/Makefile.in b/gas/doc/Makefile.in index 791efb0..2481a50 100644 --- a/gas/doc/Makefile.in +++ b/gas/doc/Makefile.in @@ -237,6 +237,7 @@ CPU_DOCS = \ c-arm.texi \ c-avr.texi \ c-bfin.texi \ + c-cr16.texi \ c-d10v.texi \ c-cris.texi \ c-h8300.texi \ @@ -294,9 +295,9 @@ $(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(am__confi exit 1;; \ esac; \ done; \ - echo ' cd $(top_srcdir) && $(AUTOMAKE) --cygnus doc/Makefile'; \ + echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign doc/Makefile'; \ cd $(top_srcdir) && \ - $(AUTOMAKE) --cygnus doc/Makefile + $(AUTOMAKE) --foreign doc/Makefile .PRECIOUS: Makefile Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status @case '$?' in \ diff --git a/gas/doc/all.texi b/gas/doc/all.texi index ddabb68..b4778bf 100644 --- a/gas/doc/all.texi +++ b/gas/doc/all.texi @@ -31,6 +31,7 @@ @set ARM @set AVR @set BFIN +@set CR16 @set CRIS @set D10V @set D30V diff --git a/gas/doc/as.texinfo b/gas/doc/as.texinfo index 2cc40aa..b6f7f32 100644 --- a/gas/doc/as.texinfo +++ b/gas/doc/as.texinfo @@ -6351,6 +6351,9 @@ subject, see the hardware manufacturer's manual. @ifset BFIN * BFIN-Dependent:: BFIN Dependent Features @end ifset +@ifset CR16 +* CR16-Dependent:: CR16 Dependent Features +@end ifset @ifset CRIS * CRIS-Dependent:: CRIS Dependent Features @end ifset @@ -6472,6 +6475,10 @@ subject, see the hardware manufacturer's manual. @include c-bfin.texi @end ifset +@ifset CR16 +@include c-cr16.texi +@end ifset + @ifset CRIS @include c-cris.texi @end ifset diff --git a/gas/doc/c-cr16.texi b/gas/doc/c-cr16.texi new file mode 100644 index 0000000..4748d56 --- /dev/null +++ b/gas/doc/c-cr16.texi @@ -0,0 +1,80 @@ +@c Copyright 2007 Free Software Foundation, Inc. +@c This is part of the GAS manual. +@c For copying conditions, see the file as.texinfo. + +@ifset GENERIC +@page +@node CR16-Dependent +@chapter CR16 Dependent Features +@end ifset +@ifclear GENERIC +@node Machine Dependencies +@chapter CR16 Dependent Features +@end ifclear + +@cindex CR16 support +@menu +* CR16 Operand Qualifiers:: CR16 Machine Operand Qualifiers +@end menu + +@node CR16 Operand Qualifiers +@section CR16 Operand Qualifiers +@cindex CR16 Operand Qualifiers + +The National Semiconductor CR16 target of @code{@value{AS}} has a few machine dependent operand qualifiers. + +Operand expression type qualifier is an optional field in the instruction operand, to determines the type of the expression field of an operand. The @code{@@} is required. CR16 architecture uses one of the following expression qualifiers: + +@table @code +@item s +- @code{Specifies expression operand type as small} +@item m +- @code{Specifies expression operand type as medium} +@item l +- @code{Specifies expression operand type as large} +@item c +- @code{Specifies the CR16 Assembler generates a relocation entry for the operand, where pc has implied bit, the expression is adjusted accordingly. The linker uses the relocation entry to update the operand address at link time.} +@end table + +CR16 target operand qualifiers and its size (in bits): + +@table @samp +@item Immediate Operand +- s ---- 4 bits +@item +- m ---- 16 bits, for movb and movw instructions. +@item +- m ---- 20 bits, movd instructions. +@item +- l ---- 32 bits + +@item Absolute Operand +- s ---- Illegal specifier for this operand. +@item +- m ---- 20 bits, movd instructions. + +@item Displacement Operand +- s ---- 8 bits +@item +- m ---- 16 bits +@item +- l ---- 24 bits +@end table + +For example: +@example +1 @code{movw $_myfun@@c,r1} + + This loads the address of _myfun, shifted right by 1, into r1. + +2 @code{movd $_myfun@@c,(r2,r1)} + + This loads the address of _myfun, shifted right by 1, into register-pair r2-r1. + +3 @code{_myfun_ptr:} + @code{.long _myfun@@c} + @code{loadd _myfun_ptr, (r1,r0)} + @code{jal (r1,r0)} + + This .long directive, the address of _myfunc, shifted right by 1 at link time. +@end example |