/* Definitions for Linux for S/390.
- Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005, 2006
+ 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.
+This file is part of GCC.
-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.
+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 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.
+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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
#ifndef _LINUX_H
#define _LINUX_H
-#define IEEE_FLOAT 1
-#define TARGET_IBM_FLOAT 0
-#define TARGET_IEEE_FLOAT 1
+/* Target specific version string. */
-#include <s390/s390.h> /* Base s390 target machine definitions*/
-
-#include <linux.h>
-
-#undef SIZE_TYPE /* use default */
-
-#undef TARGET_VERSION
+#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
-/* 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
+/* Target specific type definitions. */
-/* 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. */
+/* ??? 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
-/* 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)))
+/* Target specific preprocessor settings. */
+#define TARGET_OS_CPP_BUILTINS() \
+ do \
+ { \
+ LINUX_TARGET_OS_CPP_BUILTINS(); \
+ } \
+ while (0)
-#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)
+/* Target specific assembler settings. */
-/* This is how to output an assembler line defining an `int' constant. */
+#undef ASM_SPEC
+#define ASM_SPEC "%{m31&m64}%{mesa&mzarch}%{march=*}"
-#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?? */
+/* Target specific linker settings. */
-#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. */
+#ifdef DEFAULT_TARGET_64BIT
+#define MULTILIB_DEFAULTS { "m64" }
+#else
+#define MULTILIB_DEFAULTS { "m31" }
+#endif
-#define BSS_SECTION_ASM_OP ".bss"
+#define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1"
+#define GLIBC_DYNAMIC_LINKER64 "/lib/ld64.so.1"
-/* This is how to output a command to make the user-level label named NAME
- defined for reference from other files. */
+#undef LINK_SPEC
+#define LINK_SPEC \
+ "%{m31:-m elf_s390}%{m64:-m elf64_s390} \
+ %{shared:-shared} \
+ %{!shared: \
+ %{static:-static} \
+ %{!static: \
+ %{rdynamic:-export-dynamic} \
+ %{!dynamic-linker: \
+ %{m31:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "} \
+ %{m64:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}}}"
-#define ASM_GLOBALIZE_LABEL(FILE, NAME) \
- (fputs (".globl ", FILE), assemble_name (FILE, NAME), fputs ("\n", FILE))
+#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
-#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
-/* Select section for constant in constant pool.
- We are in the right section.
- undef for 64 bit mode (linux64.h).
- */
+#define MD_UNWIND_SUPPORT "config/s390/linux-unwind.h"
-#undef SELECT_RTX_SECTION
-#define SELECT_RTX_SECTION(MODE, X)
+#ifdef TARGET_LIBC_PROVIDES_SSP
+/* s390 glibc provides __stack_chk_guard in 0x14(tp),
+ s390x glibc provides it at 0x28(tp). */
+#define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? 0x28 : 0x14)
+#endif
-\f
-/* 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)
+/* Define if long doubles should be mangled as 'g'. */
+#define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING
#endif
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