/* Definitions for Linux for S/390. Copyright (C) 1999, 2000, 2001 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 #define IEEE_FLOAT 1 #define TARGET_IBM_FLOAT 0 #define TARGET_IEEE_FLOAT 1 #include /* Base s390 target machine definitions*/ #include #undef SIZE_TYPE /* use default */ #undef TARGET_VERSION #define TARGET_VERSION fprintf (stderr, " (Linux for S/390)"); /* Names to predefine in the preprocessor for this target machine. */ #define CPP_PREDEFINES "-Dlinux -Asystem(linux) -Acpu(s390) -Amachine(s390) -D__s390__ -Asystem(unix) -Dunix -D__ELF__" /* * Caller save not (always) working in gcc-2.95.2 */ #undef CC1_SPEC #define CC1_SPEC "-fno-caller-saves" #define CC1PLUS_SPEC "-fno-caller-saves" #undef LINK_SPEC #ifdef CROSS_COMPILE #define LINK_SPEC "-m elf_s390 %{shared:-shared} \ %{!shared: \ %{!ibcs: \ %{!static: \ %{rdynamic:-export-dynamic} \ %{!dynamic-linker:-dynamic-linker /lib/ld.so.1 \ -rpath-link=/usr/local/s390-ibm-linux/lib}} \ %{static:-static}}}" #else #define LINK_SPEC "-m elf_s390 %{shared:-shared} \ %{!shared: \ %{!ibcs: \ %{!static: \ %{rdynamic:-export-dynamic} \ %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}} \ %{static:-static}}}" #endif /* Need to define this. Otherwise define to BITS_PER_WORD in cexp.c. But BITS_PER_WORD depends on target flags, which are not defined in cexpc.c. */ #undef WCHAR_TYPE #define WCHAR_TYPE "int" #undef WCHAR_TYPE_SIZE #define WCHAR_TYPE_SIZE 32 /* Character to start a comment. */ #define ASM_COMMENT_START "#" /* Assembler pseudos to introduce constants of various size. */ #define ASM_SHORT "\t.word" #define ASM_LONG "\t.long" #define ASM_QUAD "\t.quad" #define ASM_DOUBLE "\t.double" /* Prefix for internally generated assembler labels. */ #define LPREFIX ".L" #define ASM_OUTPUT_LABELREF(FILE, NAME) \ fprintf (FILE, "%s", NAME); /* 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)) /* This is how to output an assembler line defining a `double' constant. */ /* This is how to output an assembler line defining a `double' constant. */ #undef ASM_OUTPUT_DOUBLE #define ASM_OUTPUT_DOUBLE(FILE, VALUE) \ { \ long t[2]; \ REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), t); \ fprintf (FILE, "\t.long 0x%lx\n\t.long 0x%lx\n", \ t[0] & 0xffffffff, t[1] & 0xffffffff); \ } /* This is how to output an assembler line defining a `float' constant. */ #undef ASM_OUTPUT_FLOAT #define ASM_OUTPUT_FLOAT(FILE, VALUE) \ { \ long t; \ REAL_VALUE_TO_TARGET_SINGLE ((VALUE), t); \ fprintf (FILE, "\t.long 0x%lx\n", t & 0xffffffff); \ } /* 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))) #define ASM_OUTPUT_DOUBLE_INT(FILE, VALUE) \ do { fprintf ((FILE), "%s\t", ASM_QUAD); \ /* Work around bug in some GNU as versions */ \ if (GET_CODE (VALUE) == CONST_INT && INTVAL (VALUE) < INT_MIN) \ fprintf ((FILE), HOST_WIDE_INT_PRINT_HEX, INTVAL (x)); \ else \ output_addr_const ((FILE), (VALUE)); \ putc ('\n', (FILE)); \ } while (0) /* This is how to output an assembler line defining an `int' constant. */ #undef ASM_OUTPUT_INT #define ASM_OUTPUT_INT(FILE, VALUE) \ do { fprintf (FILE, "%s\t", ASM_LONG); \ output_addr_const (FILE, (VALUE)); \ putc ('\n',FILE); \ } while (0) /* Likewise for `char' and `short' constants. is this supposed to do align too?? */ #define ASM_OUTPUT_SHORT(FILE, VALUE) \ ( fprintf (FILE, "%s ", ASM_SHORT), \ output_addr_const (FILE, (VALUE)), \ putc ('\n',FILE)) #define ASM_OUTPUT_CHAR(FILE, VALUE) \ ( fprintf (FILE, "%s ", ASM_BYTE_OP), \ output_addr_const (FILE, (VALUE)), \ putc ('\n', FILE)) /* This is how to output an assembler line for a numeric constant byte. */ #define ASM_OUTPUT_BYTE(FILE, VALUE) \ fprintf ((FILE), "%s 0x%x\n", ASM_BYTE_OP, (VALUE)) /* 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\t%s%d\n", TARGET_64BIT?ASM_QUAD:ASM_LONG, \ 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\t%s%d-%s%d\n", TARGET_64BIT?ASM_QUAD:ASM_LONG, \ 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. */ #define ASM_OUTPUT_ALIGN(FILE, LOG) \ if ((LOG)!=0) fprintf ((FILE), "\t.align %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 .,.+%u\n", (SIZE)) /* This is how to output an assembler line that says to advance the location counter to a multiple of 2**LOG bytes. */ #define ASM_OUTPUT_ALIGN(FILE, LOG) \ if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG)) /* This is how to output an assembler line that says to advance the location counter by SIZE bytes. */ #define ASM_OUTPUT_SKIP(FILE, SIZE) \ fprintf ((FILE), "\t.set .,.+%u\n", (SIZE)) /* The routine used to output sequences of byte values. We use a special version of this for most svr4 targets because doing so makes the generated assembly code more compact (and thus faster to assemble) as well as more readable. Note that if we find subparts of the character sequence which end with NUL (and which are shorter than STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */ #undef ASM_OUTPUT_ASCII #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \ do { \ register unsigned char *_ascii_bytes = (unsigned char *) (STR); \ register unsigned char *limit = _ascii_bytes + (LENGTH); \ register unsigned bytes_in_chunk = 0; \ for (; _ascii_bytes < limit; _ascii_bytes++) \ { \ register unsigned char *p; \ if (bytes_in_chunk >= 64) \ { \ fputc ('\n', (FILE)); \ bytes_in_chunk = 0; \ } \ for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \ continue; \ if (p < limit && (p - _ascii_bytes) <= STRING_LIMIT) \ { \ if (bytes_in_chunk > 0) \ { \ fputc ('\n', (FILE)); \ bytes_in_chunk = 0; \ } \ ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \ _ascii_bytes = p; \ } \ else \ { \ if (bytes_in_chunk == 0) \ fprintf ((FILE), "%s\t", ASM_BYTE_OP); \ else \ fputc (',', (FILE)); \ fprintf ((FILE), "0x%02x", *_ascii_bytes); \ bytes_in_chunk += 5; \ } \ } \ if (bytes_in_chunk > 0) \ fprintf ((FILE), "\n"); \ } while (0) /* 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)) #define DBX_REGISTER_NUMBER(REGNO) (REGNO) /* 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) /* 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 %d\n",DELTA); \ } \ 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 %d\n",DELTA); \ } \ } \ 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 %d\n",DELTA); \ 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 %d\n",DELTA); \ 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