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Diffstat (limited to 'gcc/config/rs6000/linux64.h')
| -rw-r--r-- | gcc/config/rs6000/linux64.h | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/gcc/config/rs6000/linux64.h b/gcc/config/rs6000/linux64.h new file mode 100644 index 00000000000..9fba46efaa1 --- /dev/null +++ b/gcc/config/rs6000/linux64.h @@ -0,0 +1,307 @@ +/* Definitions of target machine for GNU compiler, + for 64 bit powerpc linux. + Copyright (C) 2000, 2001 Free Software Foundation, 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. */ + +/* Yes! We are AIX! Err. Wait. We're Linux!. No, wait, we're a + combo of both!*/ +#undef DEFAULT_ABI +#define DEFAULT_ABI ABI_AIX + +#undef TARGET_AIX +#define TARGET_AIX 1 + +#undef TARGET_DEFAULT +#define TARGET_DEFAULT (MASK_POWERPC | MASK_POWERPC64 | MASK_64BIT | MASK_NEW_MNEMONICS) + +/* AIX does not have any init/fini or ctor/dtor sections, so create + static constructors and destructors as normal functions. */ +/* #define ASM_OUTPUT_CONSTRUCTOR(file, name) */ +/* #define ASM_OUTPUT_DESTRUCTOR(file, name) */ +#define USER_LABEL_PREFIX "" + +/* Tell the assembler to assume that all undefined names are external. + + Don't do this until the fixed IBM assembler is more generally available. + When this becomes permanently defined, the ASM_OUTPUT_EXTERNAL, + ASM_OUTPUT_EXTERNAL_LIBCALL, and RS6000_OUTPUT_BASENAME macros will no + longer be needed. Also, the extern declaration of mcount in ASM_FILE_START + will no longer be needed. */ + +/* #define ASM_SPEC "-u %(asm_cpu)" */ + +/* AIX word-aligns FP doubles but doubleword-aligns 64-bit ints. */ +#define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \ + (TYPE_MODE (TREE_CODE (TREE_TYPE (FIELD)) == ARRAY_TYPE \ + ? get_inner_array_type (FIELD) \ + : TREE_TYPE (FIELD)) == DFmode \ + ? MIN ((COMPUTED), 32) : (COMPUTED)) + +/* AIX increases natural record alignment to doubleword if the first + field is an FP double while the FP fields remain word aligned. */ +#define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ + ((TREE_CODE (STRUCT) == RECORD_TYPE \ + || TREE_CODE (STRUCT) == UNION_TYPE \ + || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ + && TYPE_FIELDS (STRUCT) != 0 \ + && DECL_MODE (TYPE_FIELDS (STRUCT)) == DFmode \ + ? MAX (MAX ((COMPUTED), (SPECIFIED)), BIGGEST_ALIGNMENT) \ + : MAX ((COMPUTED), (SPECIFIED))) + +/* Indicate that jump tables go in the text section. */ +#undef JUMP_TABLES_IN_TEXT_SECTION +#define JUMP_TABLES_IN_TEXT_SECTION 1 + +/* Define cutoff for using external functions to save floating point. */ +#undef FP_SAVE_INLINE +#define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) == 62 || (FIRST_REG) == 63) + +#undef TARGET_NO_TOC +#undef TARGET_TOC + +/* 64-bit PowerPC Linux always has a TOC. */ +#define TARGET_NO_TOC 0 +#define TARGET_TOC 1 + +/* 64-bit PowerPC Linux always has GPR13 fixed. */ +#define FIXED_R13 1 + +/* __throw will restore its own return address to be the same as the + return address of the function that the throw is being made to. + This is unfortunate, because we want to check the original + return address to see if we need to restore the TOC. + So we have to squirrel it away with this. */ +#define SETUP_FRAME_ADDRESSES() rs6000_aix_emit_builtin_unwind_init () + +#define PROFILE_HOOK(LABEL) output_profile_hook (LABEL) +/* Don't assume anything about the header files. */ +#define NO_IMPLICIT_EXTERN_C + +#undef MD_EXEC_PREFIX +#undef MD_STARTFILE_PREFIX + +#undef CPP_PREDEFINES +#define CPP_PREDEFINES \ + "-D_PPC_ -D__PPC__ -D_PPC64_ -D__PPC64__ -D__powerpc__ -D__powerpc64__ \ + -D_PIC_ -D__PIC__ -D_BIG_ENDIAN -D__BIG_ENDIAN__ -D__ELF__ \ + -D__LONG_MAX__=9223372036854775807L \ + -Acpu=powerpc64 -Amachine=powerpc64" + +#undef CPP_OS_DEFAULT_SPEC +#define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)" + +/* The GNU C++ standard library currently requires _GNU_SOURCE being + defined on glibc-based systems. This temporary hack accomplishes this, + it should go away as soon as libstdc++-v3 has a real fix. */ +#undef CPLUSPLUS_CPP_SPEC +#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)" + +#undef LINK_SHLIB_SPEC +#define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}" + +#undef LIB_DEFAULT_SPEC +#define LIB_DEFAULT_SPEC "%(lib_linux)" + +#undef STARTFILE_DEFAULT_SPEC +#define STARTFILE_DEFAULT_SPEC "%(startfile_linux)" + +#undef ENDFILE_DEFAULT_SPEC +#define ENDFILE_DEFAULT_SPEC "%(endfile_linux)" + +#undef LINK_START_DEFAULT_SPEC +#define LINK_START_DEFAULT_SPEC "%(link_start_linux)" + +#undef LINK_OS_DEFAULT_SPEC +#define LINK_OS_DEFAULT_SPEC "%(link_os_linux)" + +#undef LINK_OS_LINUX_SPEC +#define LINK_OS_LINUX_SPEC "-m elf64ppc %{!shared: %{!static: \ + %{rdynamic:-export-dynamic} \ + %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}" + +#undef TOC_SECTION_ASM_OP +#define TOC_SECTION_ASM_OP "\t.section\t\".toc\",\"aw\"" + +#undef MINIMAL_TOC_SECTION_ASM_OP +#define MINIMAL_TOC_SECTION_ASM_OP "\t.section\t\".toc1\",\"aw\"\n\t.align 3" + +#undef TARGET_VERSION +#define TARGET_VERSION fprintf (stderr, " (PowerPC64 GNU/Linux)"); + +/* Must be at least as big as our pointer type. */ +#undef SIZE_TYPE +#define SIZE_TYPE "long unsigned int" + +#undef PTRDIFF_TYPE +#define PTRDIFF_TYPE "long int" + +#undef WCHAR_TYPE +#define WCHAR_TYPE "int" +#undef WCHAR_TYPE_SIZE +#define WCHAR_TYPE_SIZE 32 + +/* Override rs6000.h definition. */ +#undef ASM_APP_ON +#define ASM_APP_ON "#APP\n" + +/* Override rs6000.h definition. */ +#undef ASM_APP_OFF +#define ASM_APP_OFF "#NO_APP\n" + +#undef DEFAULT_VTABLE_THUNKS +#ifndef USE_GNULIBC_1 +#define DEFAULT_VTABLE_THUNKS 1 +#endif + +/* PowerPC no-op instruction. */ +#undef RS6000_CALL_GLUE +#define RS6000_CALL_GLUE "nop" + +/* Dwarf2 debugging. */ +#undef PREFERRED_DEBUGGING_TYPE +#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG + +/* This macro gets just the user-specified name + out of the string in a SYMBOL_REF. Discard + a leading * or @. */ +#define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME) \ +do { \ + const char *_name = SYMBOL_NAME; \ + while (*_name == '*' || *_name == '@') \ + _name++; \ + (VAR) = _name; \ +} while (0) + +/* This is how to output a reference to a user-level label named NAME. + `assemble_name' uses this. */ + +/* Override elfos.h definition. */ +#undef ASM_OUTPUT_LABELREF +#define ASM_OUTPUT_LABELREF(FILE,NAME) \ +do { \ + const char *_name = NAME; \ + if (*_name == '@') \ + _name++; \ + \ + if (*_name == '*') \ + fprintf (FILE, "%s", _name + 1); \ + else \ + asm_fprintf (FILE, "%U%s", _name); \ +} while (0) + +#undef ASM_DECLARE_FUNCTION_NAME +#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ + do { \ + if (TARGET_RELOCATABLE && (get_pool_size () != 0 || profile_flag) \ + && uses_TOC()) \ + { \ + char buf[256]; \ + \ + ASM_OUTPUT_INTERNAL_LABEL (FILE, "LCL", rs6000_pic_labelno); \ + \ + ASM_GENERATE_INTERNAL_LABEL (buf, "LCTOC", 1); \ + fputs ("\t.quad ", FILE); \ + assemble_name (FILE, buf); \ + putc ('-', FILE); \ + ASM_GENERATE_INTERNAL_LABEL (buf, "LCF", rs6000_pic_labelno); \ + assemble_name (FILE, buf); \ + putc ('\n', FILE); \ + } \ + \ + fprintf (FILE, "%s", TYPE_ASM_OP); \ + assemble_name (FILE, NAME); \ + putc (',', FILE); \ + fprintf (FILE, TYPE_OPERAND_FMT, "function"); \ + putc ('\n', FILE); \ + ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \ + \ + if (DEFAULT_ABI == ABI_AIX) \ + { \ + const char *desc_name, *orig_name; \ + \ + STRIP_NAME_ENCODING (orig_name, NAME); \ + desc_name = orig_name; \ + while (*desc_name == '.') \ + desc_name++; \ + \ + if (TREE_PUBLIC (DECL)) \ + fprintf (FILE, "\t.globl %s\n", desc_name); \ + \ + fputs ("\t.section\t\".opd\",\"aw\"\n", FILE); \ + fprintf (FILE, "%s:\n", desc_name); \ + fprintf (FILE, "\t.quad %s\n", orig_name); \ + fputs ("\t.quad .TOC.@tocbase\n", FILE); \ + if (DEFAULT_ABI == ABI_AIX) \ + fputs ("\t.quad 0\n", FILE); \ + fprintf (FILE, "\t.previous\n"); \ + } \ + ASM_OUTPUT_LABEL (FILE, NAME); \ + } while (0) + +/* Return non-zero if this entry is to be written into the constant + pool in a special way. We do so if this is a SYMBOL_REF, LABEL_REF + or a CONST containing one of them. If -mfp-in-toc (the default), + we also do this for floating-point constants. We actually can only + do this if the FP formats of the target and host machines are the + same, but we can't check that since not every file that uses + GO_IF_LEGITIMATE_ADDRESS_P includes real.h. We also do this when + we can write the entry into the TOC and the entry is not larger + than a TOC entry. */ + +#undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P +#define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \ + (TARGET_TOC \ + && (GET_CODE (X) == SYMBOL_REF \ + || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \ + && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \ + || GET_CODE (X) == LABEL_REF \ + || (GET_CODE (X) == CONST_INT \ + && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \ + || (GET_CODE (X) == CONST_DOUBLE \ + && (TARGET_POWERPC64 \ + || TARGET_MINIMAL_TOC \ + || (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ + && ! TARGET_NO_FP_IN_TOC))))) + +/* This is how to output an assembler line defining an `int' + constant. */ +#undef ASM_OUTPUT_INT +#define ASM_OUTPUT_INT(FILE, VALUE) \ + do \ + { \ + fputs ("\t.long ", (FILE)); \ + output_addr_const ((FILE), (VALUE)); \ + putc ('\n', (FILE)); \ + } \ + while (0) + +/* This is how to output an assembler line defining a `double int' + constant. */ +#undef ASM_OUTPUT_DOUBLE_INT +#define ASM_OUTPUT_DOUBLE_INT(FILE, VALUE) \ + do \ + { \ + fputs (DOUBLE_INT_ASM_OP, (FILE)); \ + output_addr_const ((FILE), (VALUE)); \ + putc ('\n', (FILE)); \ + } \ + while (0) + +#undef ASM_DEFAULT_SPEC +#define ASM_DEFAULT_SPEC "-mppc64" |