diff options
Diffstat (limited to 'gcc-4.9/gcc/config/m68k/m68kelf.h')
| -rw-r--r-- | gcc-4.9/gcc/config/m68k/m68kelf.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/config/m68k/m68kelf.h b/gcc-4.9/gcc/config/m68k/m68kelf.h new file mode 100644 index 000000000..8b571daef --- /dev/null +++ b/gcc-4.9/gcc/config/m68k/m68kelf.h @@ -0,0 +1,148 @@ +/* m68kelf support, derived from m68kv4.h */ + +/* Target definitions for GNU compiler for mc680x0 running System V.4 + Copyright (C) 1991-2014 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 +<http://www.gnu.org/licenses/>. */ + + +#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 |