/* Definitions for Linux for S/390. Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc. Contributed by Hartmut Penner (hpenner@de.ibm.com) and Ulrich Weigand (uweigand@de.ibm.com). 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. */ #ifndef _LINUX_H #define _LINUX_H /* Target specific version string. */ #ifdef DEFAULT_TARGET_64BIT #undef TARGET_VERSION #define TARGET_VERSION fprintf (stderr, " (Linux for zSeries)"); #else #undef TARGET_VERSION #define TARGET_VERSION fprintf (stderr, " (Linux for S/390)"); #endif /* Target specific type definitions. */ /* ??? Do we really want long as size_t on 31-bit? */ #undef SIZE_TYPE #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "long unsigned int") #undef PTRDIFF_TYPE #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") #undef WCHAR_TYPE #define WCHAR_TYPE "int" #undef WCHAR_TYPE_SIZE #define WCHAR_TYPE_SIZE 32 /* Target specific preprocessor settings. */ #define NO_BUILTIN_SIZE_TYPE #define NO_BUILTIN_PTRDIFF_TYPE #define CPP_PREDEFINES \ "-Dunix -Asystem(unix) -Dlinux -Asystem(linux) -D__ELF__ \ -Acpu(s390) -Amachine(s390) -D__s390__" #define CPP_ARCH31_SPEC \ "-D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=int" #define CPP_ARCH64_SPEC \ "-D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int \ -D__s390x__ -D__LONG_MAX__=9223372036854775807L" #ifdef DEFAULT_TARGET_64BIT #undef CPP_SPEC #define CPP_SPEC "%{m31:%(cpp_arch31)} %{!m31:%(cpp_arch64)}" #else #undef CPP_SPEC #define CPP_SPEC "%{m64:%(cpp_arch64)} %{!m64:%(cpp_arch31)}" #endif /* Target specific compiler settings. */ /* ??? -fcaller-saves sometimes doesn't work. Fix this! */ #undef CC1_SPEC #define CC1_SPEC "-fno-caller-saves" #undef CC1PLUS_SPEC #define CC1PLUS_SPEC "-fno-caller-saves" /* Target specific assembler settings. */ #ifdef DEFAULT_TARGET_64BIT #undef ASM_SPEC #define ASM_SPEC "%{m31:-m31 -Aesa}" #else #undef ASM_SPEC #define ASM_SPEC "%{m64:-m64 -Aesame}" #endif /* Target specific linker settings. */ #define LINK_ARCH31_SPEC \ "-m elf_s390 \ %{shared:-shared} \ %{!shared: \ %{static:-static} \ %{!static: \ %{rdynamic:-export-dynamic} \ %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}" #define LINK_ARCH64_SPEC \ "-m elf64_s390 \ %{shared:-shared} \ %{!shared: \ %{static:-static} \ %{!static: \ %{rdynamic:-export-dynamic} \ %{!dynamic-linker:-dynamic-linker /lib/ld64.so.1}}}" #ifdef DEFAULT_TARGET_64BIT #undef LINK_SPEC #define LINK_SPEC "%{m31:%(link_arch31)} %{!m31:%(link_arch64)}" #else #undef LINK_SPEC #define LINK_SPEC "%{m64:%(link_arch64)} %{!m64:%(link_arch31)}" #endif /* This macro defines names of additional specifications to put in the specs that can be used in various specifications like CC1_SPEC. Its definition is an initializer with a subgrouping for each command option. */ #define EXTRA_SPECS \ { "cpp_arch31", CPP_ARCH31_SPEC }, \ { "cpp_arch64", CPP_ARCH64_SPEC }, \ { "link_arch31", LINK_ARCH31_SPEC }, \ { "link_arch64", LINK_ARCH64_SPEC }, \ /* Character to start a comment. */ #define ASM_COMMENT_START "#" /* Assembler pseudos to introduce constants of various size. */ #define ASM_DOUBLE "\t.double" /* Prefix for internally generated assembler labels. */ #define LPREFIX ".L" /* This is how to output the definition of a user-level label named NAME, such as the label on a static function or variable NAME. */ #undef ASM_OUTPUT_LABEL #define ASM_OUTPUT_LABEL(FILE, NAME) \ (assemble_name (FILE, NAME), fputs (":\n", FILE)) /* Store in OUTPUT a string (made with alloca) containing an assembler-name for a local static variable named NAME. LABELNO is an integer which is different for each call. */ #undef ASM_FORMAT_PRIVATE_NAME #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \ ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \ sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO))) /* internal macro to output long */ #define _ASM_OUTPUT_LONG(FILE, VALUE) \ fprintf (FILE, "\t.long\t0x%lX\n", VALUE); /* This is how to output an element of a case-vector that is absolute. */ #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ fprintf (FILE, "%s%s%d\n", integer_asm_op (UNITS_PER_WORD, TRUE), \ LPREFIX, VALUE) /* This is how to output an element of a case-vector that is relative. */ #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ fprintf (FILE, "%s%s%d-%s%d\n", integer_asm_op (UNITS_PER_WORD, TRUE), \ LPREFIX, VALUE, LPREFIX, REL) /* 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) \ if ((LOG)!=0) fprintf ((FILE), "\t.align\t%d\n", 1<<(LOG)) /* This is how to output an assembler line that says to advance the location counter by SIZE bytes. */ #undef ASM_OUTPUT_SKIP #define ASM_OUTPUT_SKIP(FILE, SIZE) \ fprintf ((FILE), "\t.set\t.,.+%u\n", (SIZE)) /* This is how to output assembler code to declare an uninitialized external linkage data object. */ #undef ASM_OUTPUT_ALIGNED_BSS #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) /* Output before read-only data. */ #define TEXT_SECTION_ASM_OP ".text" /* Output before writable (initialized) data. */ #define DATA_SECTION_ASM_OP ".data" /* Output before writable (uninitialized) data. */ #define BSS_SECTION_ASM_OP ".bss" /* This is how to output a command to make the user-level label named NAME defined for reference from other files. */ #define ASM_GLOBALIZE_LABEL(FILE, NAME) \ (fputs (".globl ", FILE), assemble_name (FILE, NAME), fputs ("\n", FILE)) /* Select section for constant in constant pool. We are in the right section. undef for 64 bit mode (linux64.h). */ #undef SELECT_RTX_SECTION #define SELECT_RTX_SECTION(MODE, X, ALIGN) /* Output code to add DELTA to the first argument, and then jump to FUNCTION. Used for C++ multiple inheritance. */ #define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \ do { \ if (TARGET_64BIT) \ { \ if (flag_pic) \ { \ fprintf (FILE, "\tlarl 1,0f\n"); \ fprintf (FILE, "\tagf %d,0(1)\n", \ aggregate_value_p (TREE_TYPE \ (TREE_TYPE (FUNCTION))) ? 3 :2 ); \ fprintf (FILE, "\tlarl 1,"); \ assemble_name (FILE, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \ fprintf (FILE, "@GOTENT\n"); \ fprintf (FILE, "\tlg 1,0(1)\n"); \ fprintf (FILE, "\tbr 1\n"); \ fprintf (FILE, "0:\t.long "); \ fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, (DELTA)); \ fprintf (FILE, "\n"); \ } \ else \ { \ fprintf (FILE, "\tlarl 1,0f\n"); \ fprintf (FILE, "\tagf %d,0(1)\n", \ aggregate_value_p (TREE_TYPE \ (TREE_TYPE (FUNCTION))) ? 3 :2 ); \ fprintf (FILE, "\tjg "); \ assemble_name (FILE, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \ fprintf (FILE, "\n"); \ fprintf (FILE, "0:\t.long "); \ fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, (DELTA)); \ fprintf (FILE, "\n"); \ } \ } \ else \ { \ if (flag_pic) \ { \ fprintf (FILE, "\tbras 1,0f\n"); \ fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_-.\n"); \ fprintf (FILE, "\t.long "); \ assemble_name (FILE, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \ fprintf (FILE, "@GOT\n"); \ fprintf (FILE, "\t.long "); \ fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, (DELTA)); \ fprintf (FILE, "\n"); \ fprintf (FILE, "0:\tal %d,8(1)\n", \ aggregate_value_p (TREE_TYPE \ (TREE_TYPE (FUNCTION))) ? 3 : 2 ); \ fprintf (FILE, "\tl 0,4(1)\n"); \ fprintf (FILE, "\tal 1,0(1)\n"); \ fprintf (FILE, "\talr 1,0\n"); \ fprintf (FILE, "\tl 1,0(1)\n"); \ fprintf (FILE, "\tbr 1\n"); \ } else { \ fprintf (FILE, "\tbras 1,0f\n"); \ fprintf (FILE, "\t.long "); \ assemble_name (FILE, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \ fprintf (FILE, "-.\n"); \ fprintf (FILE, "\t.long "); \ fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, (DELTA)); \ fprintf (FILE, "\n"); \ fprintf (FILE, "0:\tal %d,4(1)\n", \ aggregate_value_p (TREE_TYPE \ (TREE_TYPE (FUNCTION))) ? 3 : 2 ); \ fprintf (FILE, "\tal 1,0(1)\n"); \ fprintf (FILE, "\tbr 1\n"); \ } \ } \ } while (0) #endif