/* m68kelf support, derived from m68kv4.h */ /* Target definitions for GNU compiler for mc680x0 running System V.4 Copyright (C) 1991, 1993, 2000, 2002, 2003, 2004, 2007, 2010, 2011 Free Software Foundation, Inc. Written by Ron Guilmette (rfg@netcom.com) and Fred Fish (fnf@cygnus.com). This file is part of GCC. GCC 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 3, or (at your option) any later version. GCC 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 GCC; see the file COPYING3. If not see . */ #ifndef SWBEG_ASM_OP #define SWBEG_ASM_OP "\t.swbeg\t" #endif /* Here are three prefixes that are used by asm_fprintf to facilitate customization for alternate assembler syntaxes. Machines with no likelihood of an alternate syntax need not define these and need not use asm_fprintf. */ /* The prefix for register names. Note that REGISTER_NAMES is supposed to include this prefix. Also note that this is NOT an fprintf format string, it is a literal string */ #undef REGISTER_PREFIX #define REGISTER_PREFIX "%" /* The prefix for local (compiler generated) labels. These labels will not appear in the symbol table. */ #undef LOCAL_LABEL_PREFIX #define LOCAL_LABEL_PREFIX "." /* The prefix to add to user-visible assembler symbols. */ #undef USER_LABEL_PREFIX #define USER_LABEL_PREFIX "" /* config/m68k.md has an explicit reference to the program counter, prefix this by the register prefix. */ #define ASM_RETURN_CASE_JUMP \ do { \ if (TARGET_COLDFIRE) \ { \ if (ADDRESS_REG_P (operands[0])) \ return "jmp %%pc@(2,%0:l)"; \ else \ return "ext%.l %0\n\tjmp %%pc@(2,%0:l)"; \ } \ else \ return "jmp %%pc@(2,%0:w)"; \ } while (0) /* This is how to output an assembler line that says to advance the location counter to a multiple of 2**LOG bytes. */ #undef ASM_OUTPUT_ALIGN #define ASM_OUTPUT_ALIGN(FILE,LOG) \ do { \ if ((LOG) > 0) \ fprintf ((FILE), "%s%u\n", ALIGN_ASM_OP, 1 << (LOG)); \ } while (0) /* Register in which address to store a structure value is passed to a function. The default in m68k.h is a1. For m68k/SVR4 it is a0. */ #undef M68K_STRUCT_VALUE_REGNUM #define M68K_STRUCT_VALUE_REGNUM A0_REG /* The static chain regnum defaults to a0, but we use that for structure return, so have to use a1 for the static chain. */ #undef STATIC_CHAIN_REGNUM #define STATIC_CHAIN_REGNUM A1_REG #undef M68K_STATIC_CHAIN_REG_NAME #define M68K_STATIC_CHAIN_REG_NAME REGISTER_PREFIX "a1" #define ASM_COMMENT_START "|" /* Define how the m68k registers should be numbered for Dwarf output. The numbering provided here should be compatible with the native SVR4 SDB debugger in the m68k/SVR4 reference port, where d0-d7 are 0-7, a0-a8 are 8-15, and fp0-fp7 are 16-23. */ #undef DBX_REGISTER_NUMBER #define DBX_REGISTER_NUMBER(REGNO) (REGNO) #if 0 /* SVR4 m68k assembler is bitching on the `comm i,1,1' which askes for 1 byte alignment. Don't generate alignment for COMMON seems to be safer until we the assembler is fixed. */ #undef ASM_OUTPUT_ALIGNED_COMMON /* Same problem with this one. */ #undef ASM_OUTPUT_ALIGNED_LOCAL #endif #undef ASM_OUTPUT_COMMON #undef ASM_OUTPUT_LOCAL #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ ( fputs (".comm ", (FILE)), \ assemble_name ((FILE), (NAME)), \ fprintf ((FILE), ",%u\n", (int)(SIZE))) #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ ( fputs (".lcomm ", (FILE)), \ assemble_name ((FILE), (NAME)), \ fprintf ((FILE), ",%u\n", (int)(SIZE))) /* Currently, JUMP_TABLES_IN_TEXT_SECTION must be defined in order to keep switch tables in the text section. */ #define JUMP_TABLES_IN_TEXT_SECTION 1 /* In m68k svr4, using swbeg is the standard way to do switch table. */ #undef ASM_OUTPUT_BEFORE_CASE_LABEL #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \ fprintf ((FILE), "%s&%d\n", SWBEG_ASM_OP, XVECLEN (PATTERN (TABLE), 1)); /* end of stuff from m68kv4.h */ #undef ENDFILE_SPEC #define ENDFILE_SPEC "crtend.o%s" #undef STARTFILE_SPEC #define STARTFILE_SPEC "crtbegin.o%s" #ifndef BSS_SECTION_ASM_OP #define BSS_SECTION_ASM_OP "\t.section\t.bss" #endif #ifndef ASM_OUTPUT_ALIGNED_BSS #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) #endif