ATMEL AVR microcontroller support.

1 files changed, 118 insertions, 0 deletions

diff --git a/gas/config/tc-avr.h b/gas/config/tc-avr.h
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+/* This file is tc-avr.h
+   Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+
+   Contributed by Denis Chertykov <denisc@overta.ru>
+
+   This file is part of GAS, the GNU Assembler.
+
+   GAS 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.
+
+   GAS 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 GAS; see the file COPYING.  If not, write to the Free
+   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+   02111-1307, USA.  */
+
+#ifndef BFD_ASSEMBLER
+ #error AVR support requires BFD_ASSEMBLER
+#endif
+
+
+#define TC_AVR
+/*   By convention, you should define this macro in the `.h' file.  For
+     example, `tc-m68k.h' defines `TC_M68K'.  You might have to use this
+     if it is necessary to add CPU specific code to the object format
+     file. */
+
+#define TARGET_FORMAT "elf32-avr"
+/*   This macro is the BFD target name to use when creating the output
+     file.  This will normally depend upon the `OBJ_FMT' macro. */
+
+#define TARGET_ARCH bfd_arch_avr
+/*   This macro is the BFD architecture to pass to `bfd_set_arch_mach'. */
+
+#define TARGET_MACH 0
+/*   This macro is the BFD machine number to pass to
+     `bfd_set_arch_mach'.  If it is not defined, GAS will use 0. */
+
+#define TARGET_BYTES_BIG_ENDIAN 0
+/*   You should define this macro to be non-zero if the target is big
+     endian, and zero if the target is little endian. */
+
+#define ONLY_STANDARD_ESCAPES
+/*   If you define this macro, GAS will warn about the use of
+     nonstandard escape sequences in a string. */
+
+#define md_operand(x)
+/*   GAS will call this function for any expression that can not be
+     recognized.  When the function is called, `input_line_pointer'
+     will point to the start of the expression. */
+
+void avr_parse_cons_expression (expressionS *exp, int nbytes);
+
+#define TC_PARSE_CONS_EXPRESSION(EXPR,N) avr_parse_cons_expression (EXPR,N)
+/*
+     You may define this macro to parse an expression used in a data
+     allocation pseudo-op such as `.word'.  You can use this to
+     recognize relocation directives that may appear in such directives.*/
+
+void avr_cons_fix_new(fragS *frag,int where, int nbytes, expressionS *exp);
+
+#define TC_CONS_FIX_NEW(FRAG,WHERE,N,EXP) avr_cons_fix_new(FRAG,WHERE,N,EXP)
+/*   You may define this macro to generate a fixup for a data
+     allocation pseudo-op. */
+
+#define md_number_to_chars number_to_chars_littleendian
+/*   This should just call either `number_to_chars_bigendian' or
+     `number_to_chars_littleendian', whichever is appropriate.  On
+     targets like the MIPS which support options to change the
+     endianness, which function to call is a runtime decision.  On
+     other targets, `md_number_to_chars' can be a simple macro. */
+
+#define WORKING_DOT_WORD
+/*
+`md_short_jump_size'
+`md_long_jump_size'
+`md_create_short_jump'
+`md_create_long_jump'
+     If `WORKING_DOT_WORD' is defined, GAS will not do broken word
+     processing (*note Broken words::.).  Otherwise, you should set
+     `md_short_jump_size' to the size of a short jump (a jump that is
+     just long enough to jump around a long jmp) and
+     `md_long_jump_size' to the size of a long jump (a jump that can go
+     anywhere in the function), You should define
+     `md_create_short_jump' to create a short jump around a long jump,
+     and define `md_create_long_jump' to create a long jump. */
+
+#define MD_APPLY_FIX3
+
+#define TC_HANDLES_FX_DONE
+
+#undef RELOC_EXPANSION_POSSIBLE
+/*   If you define this macro, it means that `tc_gen_reloc' may return
+     multiple relocation entries for a single fixup.  In this case, the
+     return value of `tc_gen_reloc' is a pointer to a null terminated
+     array. */
+
+#define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section(FIXP, SEC)   
+/*   If you define this macro, it should return the offset between the
+     address of a PC relative fixup and the position from which the PC
+     relative adjustment should be made.  On many processors, the base
+     of a PC relative instruction is the next instruction, so this
+     macro would return the length of an instruction. */
+
+#define LISTING_WORD_SIZE 2
+/*   The number of bytes to put into a word in a listing.  This affects
+     the way the bytes are clumped together in the listing.  For
+     example, a value of 2 might print `1234 5678' where a value of 1
+     would print `12 34 56 78'.  The default value is 4. */
+
+#define LEX_DOLLAR 0
+/* AVR port uses `$' as a logical line separator */