contrib.texi: Mention crx.

* doc/contrib.texi: Mention crx.
	* doc/extend.texi: Document crx extensions.
	* doc/install.texi: Document crx install.
	* doc/invoke.texi: Document crx options.
	* doc/md.texi: Document crx constraints.

From-SVN: r102700

gcc/doc/contrib.texi

@@ -961,6 +961,9 @@ Jim Wilson for his direction via the steering committee, tackling hard
 problems in various places that nobody else wanted to work on, strength
 reduction and other loop optimizations.
 
+@item
+Paul Woegerer and Tal Agmon for the CRX port.
+
 @item
 Carlo Wood for various fixes.
 

gcc/doc/extend.texi

@@ -1887,7 +1887,7 @@ this attribute to work correctly.
 
 @item interrupt
 @cindex interrupt handler functions
-Use this attribute on the ARM, AVR, C4x, M32C, M32R/D and Xstormy16
+Use this attribute on the ARM, AVR, C4x, CRX, M32C, M32R/D and Xstormy16
 ports to indicate that the specified function is an interrupt handler.
 The compiler will generate function entry and exit sequences suitable
 for use in an interrupt handler when this attribute is present.

gcc/doc/install.texi

@@ -2626,6 +2626,32 @@ Pre-packaged tools can be obtained from
 information about this platform is available at
 @uref{http://developer.axis.com/}.
 
+@html
+<hr />
+@end html
+@heading @anchor{crx}CRX
+
+The CRX CompactRISC architecture is a low-power 32-bit architecture with
+fast context switching and architectural extensibility features.
+
+@ifnothtml
+@xref{CRX Options,, CRX Options, gcc, Using and Porting the GNU Compiler
+Collection (GCC)},
+@end ifnothtml
+
+@ifhtml
+See ``CRX Options'' in the main manual for a list of CRX-specific options.
+@end ifhtml
+
+Use @samp{configure --target=crx-elf --enable-languages=c,c++} to configure
+GCC@ for building a CRX cross-compiler. The option @samp{--target=crx-elf}
+is also used to build the @samp{newlib} C library for CRX.
+
+It is also possible to build libstdc++-v3 for the CRX architecture. This
+needs to be done in a sepearate step with the following configure settings:
+@samp{gcc/libstdc++-v3/configure --host=crx-elf --with-newlib
+--enable-sjlj-exceptions --enable-cxx-flags='-fexceptions -frtti'}
+
 @html
 <hr />
 @end html

gcc/doc/invoke.texi

@@ -431,6 +431,9 @@ Objective-C and Objective-C++ Dialects}.
 -melf  -maout  -melinux  -mlinux  -sim  -sim2 @gol
 -mmul-bug-workaround  -mno-mul-bug-workaround}
 
+@emph{CRX Options}
+@gccoptlist{-mmac -mpush-args}
+
 @emph{Darwin Options}
 @gccoptlist{-all_load  -allowable_client  -arch  -arch_errors_fatal @gol
 -arch_only  -bind_at_load  -bundle  -bundle_loader @gol
@@ -6986,6 +6989,7 @@ platform.
 * AVR Options::
 * Blackfin Options::
 * CRIS Options::
+* CRX Options::
 * Darwin Options::
 * DEC Alpha Options::
 * DEC Alpha/VMS Options::
@@ -7657,6 +7661,24 @@ Like @option{-sim}, but pass linker options to locate initialized data at
 0x40000000 and zero-initialized data at 0x80000000.
 @end table
 
+@node CRX Options
+@subsection CRX Options
+@cindex CRX Options
+
+These options are defined specifically for the CRX ports.
+
+@table @gcctabopt
+
+@item -mmac
+@opindex mmac
+Enable the use of multiply-accumulate instructions. Disabled by default.
+
+@item -mpush-args
+@opindex mpush-args
+Push instructions will be used to pass outgoing arguments when functions
+are called. Enabled by default.
+@end table
+
 @node Darwin Options
 @subsection Darwin Options
 @cindex Darwin options

gcc/doc/md.texi

@@ -1746,6 +1746,37 @@ Constant integer 1
 A floating point constant 0.0
 @end table
 
+@item CRX Architecture---@file{crx.h}
+@table @code
+
+@item b
+Registers from r0 to r14 (registers without stack pointer)
+
+@item l
+Register r16 (64-bit accumulator lo register)
+
+@item h
+Register r17 (64-bit accumulator hi register)
+
+@item k
+Register pair r16-r17. (64-bit accumulator lo-hi pair)
+
+@item I
+Constant that fits in 3 bits
+
+@item J
+Constant that fits in 4 bits
+
+@item K
+Constant that fits in 5 bits
+
+@item L
+Constant that is one of -1, 4, -4, 7, 8, 12, 16, 20, 32, 48
+
+@item G
+Floating point constant that is legal for store immediate
+@end table
+
 @item PowerPC and IBM RS6000---@file{rs6000.h}
 @table @code
 @item b