extend.texi: Add ip2k port to description of attribute naked.

	* doc/extend.texi: Add ip2k port to description of attribute
	naked.
	* doc/install.texi (Specific): Add ip2k description.
	* doc/install-old.texi (Configurations): Add ip2k to possible
	cpu types.
	* doc/md.texi: Document ip2k constraints.
	* config/ip2k/crt0.S: New file.
	* config/ip2k/ip2k-protos.h: New file.
	* config/ip2k/ip2k.c: New file.
	* config/ip2k/ip2k.h: New file.
	* config/ip2k/ip2k.md: New file.
	* config/ip2k/libgcc.S: New file.
	* config/ip2k/t-ip2k: New file.

Co-Authored-By: Alan Lehotsky <apl@alum.mit.edu>
Co-Authored-By: Bernd Schmidt <bernds@redhat.com>
Co-Authored-By: Dave Hudson <dave.hudson@ubicom.com>
Co-Authored-By: Frank Ch. Eigler <fche@redhat.com>
Co-Authored-By: Graham Stott <grahams@redhat.com>
Co-Authored-By: Jeff Johnston <jjohnstn@redhat.com>
Co-Authored-By: Matthew Green <mrg@redhat.com>
Co-Authored-By: Richard Henderson <rth@redhat.com>

From-SVN: r55122

gcc/ChangeLog

+Fri Jun 28 17:22:37 2002  Denis Chertykov  <denisc@overta.ru>
+			  Frank Ch. Eigler  <fche@redhat.com>
+	                  Matthew Green  <mrg@redhat.com>
+			  Richard Henderson <rtl@redhat.com>
+			  Dave Hudson  <dave.hudson@ubicom.com>
+			  Jeff Johnston  <jjohnstn@redhat.com>
+			  Alan Lehotsky <apl@alum.mit.edu>
+			  Bernd Schmidt  <bernds@redhat.com>
+			  Graham Stott  <grahams@redhat.com>
+			  
+	* doc/extend.texi: Add ip2k port to description of attribute
+	naked.
+	* doc/install.texi (Specific): Add ip2k description.
+	* doc/install-old.texi (Configurations): Add ip2k to possible
+	cpu types.
+	* doc/md.texi: Document ip2k constraints.
+	* config/ip2k/crt0.S: New file.
+	* config/ip2k/ip2k-protos.h: New file.
+	* config/ip2k/ip2k.c: New file.
+	* config/ip2k/ip2k.h: New file.
+	* config/ip2k/ip2k.md: New file.
+	* config/ip2k/libgcc.S: New file.
+	* config/ip2k/t-ip2k: New file.
+
 2002-06-30  Hans-Peter Nilsson  <hp@bitrange.com>
 
 	* config/mmix/mmix.md ("return"): New pattern.

gcc/config/ip2k/crt0.S

+;
+;   Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+;   Contributed by Red Hat, Inc.
+;
+; This file is part of GNU CC.
+;
+; GNU CC is free software; you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 2, or (at your option)
+; any later version.
+;
+; In addition to the permissions in the GNU General Public License, the
+; Free Software Foundation gives you unlimited permission to link the
+; compiled version of this file with other programs, and to distribute
+; those programs without any restriction coming from the use of this
+; file.  (The General Public License restrictions do apply in other
+; respects; for example, they cover modification of the file, and
+; distribution when not linked into another program.)
+;
+; GNU CC is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with GNU CC; see the file COPYING.  If not, write to
+; the Free Software Foundation, 59 Temple Place - Suite 330,
+; Boston, MA 02111-1307, USA.
+;
+	
+	.file	"crt0.S"
+	.text
+	.global	__start
+	.func	__start
+__start:
+	clr	$ff		; Insure we have a zero available
+	mov	w,#%hi8data(__stack) ; set up stack
+	mov	sph,w		;  
+	mov	w,#%lo8data(__stack)
+	mov	spl,w
+
+	push	#0		; Set argc/argv.
+	push	#0		; Only required for testing
+	push	#0		;  purposes and "ansi" main.
+	push	#0
+	page	_main
+	call	_main
+	push	$81		; use return value to call exit()
+	push	$80
+	page	_exit
+	call	_exit
+	break			; Should never return
+	.endfunc

gcc/config/ip2k/ip2k-protos.h

+/* Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
+   Contributed by Red Hat, Inc and Ubicom, Inc.
+
+   This file is part of GNU CC.
+
+   GNU CC is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   GNU CC is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GNU CC; see the file COPYING.  If not, write to
+   the Free Software Foundation, 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+extern void asm_file_start PARAMS ((FILE *));
+extern void asm_file_end PARAMS ((FILE *));
+
+extern void function_prologue PARAMS ((FILE *, int));
+extern void function_epilogue PARAMS ((FILE *, int));
+extern int find_one_set_bit_p PARAMS ((HOST_WIDE_INT));
+extern int find_one_clear_bit_p PARAMS ((HOST_WIDE_INT));
+
+#ifdef TREE_CODE
+extern void unique_section PARAMS ((tree, int));
+extern void encode_section_info PARAMS ((tree));
+extern void asm_output_section_name PARAMS ((FILE *, tree, const char *,
+					     int));
+extern int valid_machine_type_attribute PARAMS ((tree, tree, tree, tree));
+extern int valid_machine_decl_attribute PARAMS ((tree, tree, tree, tree));
+extern int ip2k_return_pops_args PARAMS ((tree, tree, int));
+#endif /* TREE_CODE */
+
+#ifdef RTX_CODE
+extern int legitimate_address_p PARAMS ((enum machine_mode, rtx, int));
+extern void machine_dependent_reorg PARAMS ((rtx));
+extern int ip2k_address_cost PARAMS ((rtx));
+extern int ip2k_extra_constraint PARAMS ((rtx, int));
+extern rtx legitimize_address PARAMS ((rtx, rtx, enum machine_mode, rtx));
+extern int adjust_insn_length PARAMS ((rtx insn, int len));
+extern int default_rtx_costs PARAMS ((rtx, enum rtx_code, enum rtx_code));
+extern void asm_output_char PARAMS ((FILE *, rtx));
+extern void asm_output_short PARAMS ((FILE *, rtx));
+extern void asm_output_byte PARAMS ((FILE *, int));
+extern void print_operand PARAMS ((FILE *, rtx, int));
+extern void print_operand_address PARAMS ((FILE *, rtx));
+extern int ip2k_jump_mode PARAMS ((rtx, rtx));
+extern void ip2k_split_words PARAMS ((enum machine_mode, enum machine_mode,
+				      rtx *));
+extern rtx ip2k_get_low_half PARAMS ((rtx, enum machine_mode));
+extern rtx ip2k_get_high_half PARAMS ((rtx, enum machine_mode));
+extern int ip2k_nonptr_operand PARAMS ((rtx, enum machine_mode));
+extern int ip2k_ptr_operand PARAMS ((rtx, enum machine_mode));
+extern int ip2k_ip_operand PARAMS ((rtx, enum machine_mode));
+extern int ip2k_short_operand PARAMS ((rtx, enum machine_mode));
+extern int ip2k_gen_operand PARAMS ((rtx, enum machine_mode));
+extern int ip2k_nonsp_reg_operand PARAMS ((rtx, enum machine_mode));
+extern int ip2k_symbol_ref_operand PARAMS ((rtx, enum machine_mode));
+extern const char *ip2k_set_compare PARAMS ((rtx, rtx));
+extern const char *ip2k_gen_sCOND PARAMS ((rtx, enum rtx_code, rtx));
+extern const char *ip2k_gen_signed_comp_branch PARAMS ((rtx,
+							enum rtx_code,
+							rtx));
+extern const char *ip2k_gen_unsigned_comp_branch PARAMS ((rtx,
+							  enum rtx_code,
+							  rtx));
+extern int is_regfile_address PARAMS ((rtx));
+extern int ip2k_mode_dependent_address PARAMS ((rtx));
+extern int ip2k_address_uses_reg_p PARAMS ((rtx, unsigned int));
+extern int ip2k_xexp_not_uses_reg_p PARAMS ((rtx, unsigned int, int));
+extern int ip2k_composite_xexp_not_uses_reg_p PARAMS ((rtx, unsigned int, int));
+extern int ip2k_composite_xexp_not_uses_cc0_p PARAMS ((rtx));
+extern int ip2k_signed_comparison_operator PARAMS ((rtx,
+						    enum machine_mode));
+extern int ip2k_unsigned_comparison_operator PARAMS ((rtx,
+						      enum machine_mode));
+extern int ip2k_unary_operator PARAMS ((rtx, enum machine_mode));
+extern int ip2k_binary_operator PARAMS ((rtx, enum machine_mode));
+
+extern rtx ip2k_compare_operands[3];
+#endif /* RTX_CODE */
+
+#ifdef HAVE_MACHINE_MODES
+extern int class_max_nregs PARAMS ((enum reg_class, enum machine_mode));
+extern enum reg_class class_likely_spilled_p PARAMS ((int c));
+#endif /* HAVE_MACHINE_MODES */
+
+#ifdef REAL_VALUE_TYPE
+extern void asm_output_float PARAMS ((FILE *, REAL_VALUE_TYPE));
+#endif 
+
+extern int ip2k_init_elim_offset PARAMS ((int, int));
+extern void ip2k_init_local_alloc PARAMS ((int *));
+

gcc/config/ip2k/t-ip2k

+CROSS_LIBGCC1 = libgcc1-asm.a
+LIB1ASMSRC = ip2k/libgcc.S
+
+LIB1ASMFUNCS = \
+	_indcall \
+	_mulhi3 \
+	_mulsi3 \
+	_muldi3 \
+	_udivmodhi4 \
+	_divmodhi4 \
+	_udivmodsi4 \
+	_divmodsi4 \
+	_udivmoddi4 \
+	_divmoddi4 \
+	_cmpqi2 \
+	_cmphi2 \
+	_cmpsi2 \
+	_cmpdi2 \
+	_cmpdi2_dp \
+	_fp_pop_args_ret \
+	_leaf_fp_pop_args_ret \
+	_fp_pop2_args_ret \
+	_leaf_fp_pop2_args_ret \
+	_movstrhi_countqi \
+	_movstrhi_counthi \
+	abort \
+	_exit
+
+# libgcc...
+LIBGCC1_TEST =
+
+# libgcc2.h thinks that nobody would have SI mode when
+# MIN_UNITS_PER_WORD == 1, so lie to keep from major compiler errors.
+
+TARGET_LIBGCC2_CFLAGS = -Dinhibit_libc -DDF=SF -g -DMIN_UNITS_PER_WORD=2
+
+fp-bit.c: $(srcdir)/config/fp-bit.c $(srcdir)/config/ip2k/t-ip2k crt0.o
+	echo '#define FLOAT' > fp-bit.c
+	echo '#define FLOAT_ONLY' >> fp-bit.c
+	echo '#define DF SF' >> fp-bit.c
+	echo '#define DI SI' >> fp-bit.c
+	echo '#define CMPtype QItype' >> fp-bit.c
+	echo '#define SMALL_MACHINE' >> fp-bit.c
+	echo 'typedef int QItype __attribute__ ((mode (QI)));' >> fp-bit.c
+	cat $(srcdir)/config/fp-bit.c >> fp-bit.c
+
+
+FPBIT = fp-bit.c
+
+# Our crt0 is written in assembler and we don't really support profiling.
+
+CRT0_S = $(srcdir)/config/ip2k/crt0.S
+MCRT0_S = $(CRT0_S)
+

gcc/doc/extend.texi

@@ -2444,9 +2444,9 @@ attribute is present.  Interrupts will be disabled inside function.
 
 @item naked
 @cindex function without a prologue/epilogue code
-Use this attribute on the ARM or AVR ports to indicate that the specified
-function do not need prologue/epilogue sequences generated by the
-compiler.  It is up to the programmer to provide these sequences.
+Use this attribute on the ARM, AVR and IP2K ports to indicate that the
+specified function do not need prologue/epilogue sequences generated by
+the compiler.  It is up to the programmer to provide these sequences.
 
 @item model (@var{model-name})
 @cindex function addressability on the M32R/D

gcc/doc/install-old.texi

-@c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+@c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
 @c This is part of the GCC manual.
 @c For copying conditions, see the file install.texi.
 
@@ -107,7 +107,7 @@ Here are the possible CPU types:
 @quotation
 @c gmicro, fx80, spur and tahoe omitted since they don't work.
 1750a, a29k, alpha, arm, avr, c@var{n}, clipper, dsp16xx, elxsi, fr30, h8300,
-hppa1.0, hppa1.1, i370, i386, i486, i586, i686, i786, i860, i960, m32r,
+hppa1.0, hppa1.1, i370, i386, i486, i586, i686, i786, i860, i960, ip2k, m32r,
 m68000, m68k, m6811, m6812, m88k, mcore, mips, mipsel, mips64, mips64el,
 mn10200, mn10300, ns32k, pdp11, powerpc, powerpcle, romp, rs6000, sh, sparc,
 sparclite, sparc64, v850, vax, we32k.

gcc/doc/install.texi

@@ -1543,6 +1543,8 @@ GNU Compiler Collection on your machine.
 @item
 @uref{#*-ibm-aix*,,*-ibm-aix*}
 @item
+@uref{#ip2k-*-elf,,ip2k-*-elf}
+@item
 @uref{#m32r-*-elf,,m32r-*-elf}
 @item
 @uref{#m68000-hp-bsd,,m68000-hp-bsd}
@@ -2383,6 +2385,17 @@ switch and using the configure option @option{--with-cpu-@var{cpu_type}}.
 </p>
 <hr>
 @end html
+@heading @anchor{ip2k-*-elf}ip2k-*-elf
+Ubicom IP2022 micro controller.
+This configuration is intended for embedded systems.
+There are no standard Unix configurations.
+
+Use @samp{configure --target=ip2k-elf --enable-languages=c} to configure GCC@.
+
+@html
+</p>
+<hr>
+@end html
 @heading @anchor{m32r-*-elf}m32r-*-elf
 Mitsubishi M32R processor.
 This configuration is intended for embedded systems.

gcc/doc/md.texi

@@ -1808,6 +1808,76 @@ Memory reference in external OSF/rose PIC format
 (@samp{m} is preferable for @code{asm} statements)
 @end table
 
+@item IP2K---@file{ip2k.h}
+@table @code
+@item a
+@samp{DP} or @samp{IP} registers (general address)
+
+@item f
+@samp{IP} register
+
+@item j
+@samp{IPL} register
+
+@item k
+@samp{IPH} register
+
+@item b
+@samp{DP} register
+
+@item y
+@samp{DPH} register
+
+@item z
+@samp{DPL} register
+
+@item q
+@samp{SP} register
+
+@item c
+@samp{DP} or @samp{SP} registers (offsettable address)
+
+@item d
+Non-pointer registers (not @samp{SP}, @samp{DP}, @samp{IP})
+
+@item u
+Non-SP registers (everything except @samp{SP})
+
+@item R
+Indirect thru @samp{IP} - Avoid this except for @code{QImode}, since we
+can't access extra bytes
+
+@item S
+Indirect thru @samp{SP} or @samp{DP} with short displacement (0..127)
+
+@item T
+Data-section immediate value
+
+@item I
+Integers from @minus{}255 to @minus{}1
+
+@item J
+Integers from 0 to 7---valid bit number in a register
+
+@item K
+Integers from 0 to 127---valid displacement for addressing mode
+
+@item L
+Integers from 1 to 127
+
+@item M
+Integer @minus{}1
+
+@item N
+Integer 1
+
+@item O
+Zero
+
+@item P
+Integers from 0 to 255
+@end table
+
 @item Motorola 680x0---@file{m68k.h}
 @table @code
 @item a