/* Definitions for Linux for S/390.
- Copyright (C) 1999, 2000, 2001, 2002 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
/* Target specific preprocessor settings. */
-#define CPP_PREDEFINES \
- "-Dunix -Asystem(unix) -D__gnu_linux__ -Dlinux -Asystem(linux) -D__ELF__ \
- -Acpu(s390) -Amachine(s390) -D__s390__"
+#define TARGET_OS_CPP_BUILTINS() \
+ do \
+ { \
+ LINUX_TARGET_OS_CPP_BUILTINS(); \
+ } \
+ while (0)
-#define CPP_ARCH31_SPEC ""
-#define CPP_ARCH64_SPEC "-D__s390x__ -D__LONG_MAX__=9223372036854775807L"
-#undef CPP_SPEC
-#ifdef DEFAULT_TARGET_64BIT
-#define CPP_SPEC "%{!m31:%(cpp_arch64)}"
-#else
-#define CPP_SPEC "%{m64:%(cpp_arch64)}"
-#endif
-
-/* Target specific compiler settings. */
+/* Target specific assembler 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"
+#undef ASM_SPEC
+#define ASM_SPEC "%{m31&m64}%{mesa&mzarch}%{march=*}"
-/* Target specific assembler settings. */
+/* Target specific linker settings. */
#ifdef DEFAULT_TARGET_64BIT
-#undef ASM_SPEC
-#define ASM_SPEC "%{m31:-m31 -Aesa}"
+#define MULTILIB_DEFAULTS { "m64" }
#else
-#undef ASM_SPEC
-#define ASM_SPEC "%{m64:-m64 -Aesame}"
+#define MULTILIB_DEFAULTS { "m31" }
#endif
+#define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1"
+#define GLIBC_DYNAMIC_LINKER64 "/lib/ld64.so.1"
-/* 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 \
+#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:-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 "#"
+ %{!dynamic-linker: \
+ %{m31:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "} \
+ %{m64:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}}}"
+#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
-/* Assembler pseudos to introduce constants of various size. */
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
-#define ASM_DOUBLE "\t.double"
+#define MD_UNWIND_SUPPORT "config/s390/linux-unwind.h"
-/* The LOCAL_LABEL_PREFIX variable is used by dbxelf.h. */
-#define LOCAL_LABEL_PREFIX "."
-
-/* 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))
-\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 "); \
- 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)
-
-/* Do code reading to identify a signal frame, and set the frame
- state data appropriately. See unwind-dw2.c for the structs. */
+#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
-#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
- do { \
- unsigned char *pc_ = (CONTEXT)->ra; \
- long new_cfa_; \
- int i_; \
- \
- typedef struct \
- { \
- unsigned long psw_mask; \
- unsigned long psw_addr; \
- unsigned long gprs[16]; \
- unsigned int acrs[16]; \
- unsigned int fpc; \
- unsigned int __pad; \
- double fprs[16]; \
- } __attribute__ ((__aligned__ (8))) sigregs_; \
- \
- sigregs_ *regs_; \
- \
- /* svc $__NR_sigreturn or svc $__NR_rt_sigreturn */ \
- if (pc_[0] != 0x0a || (pc_[1] != 119 && pc_[1] != 173)) \
- break; \
- \
- /* New-style RT frame: \
- retcode + alignment (8 bytes) \
- siginfo (128 bytes) \
- ucontext (contains sigregs) */ \
- if ((CONTEXT)->ra == (CONTEXT)->cfa) \
- { \
- struct ucontext_ \
- { \
- unsigned long uc_flags; \
- struct ucontext_ *uc_link; \
- unsigned long uc_stack[3]; \
- sigregs_ uc_mcontext; \
- } *uc_ = (CONTEXT)->cfa + 8 + 128; \
- \
- regs_ = &uc_->uc_mcontext; \
- } \
- \
- /* Old-style RT frame and all non-RT frames: \
- old signal mask (8 bytes) \
- pointer to sigregs */ \
- else \
- { \
- regs_ = *(sigregs_ **)((CONTEXT)->cfa + 8); \
- } \
- \
- new_cfa_ = regs_->gprs[15] + 16*sizeof(long) + 32; \
- (FS)->cfa_how = CFA_REG_OFFSET; \
- (FS)->cfa_reg = 15; \
- (FS)->cfa_offset = \
- new_cfa_ - (long) (CONTEXT)->cfa + 16*sizeof(long) + 32; \
- \
- for (i_ = 0; i_ < 16; i_++) \
- { \
- (FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[i_].loc.offset = \
- (long)®s_->gprs[i_] - new_cfa_; \
- } \
- for (i_ = 0; i_ < 16; i_++) \
- { \
- (FS)->regs.reg[16+i_].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[16+i_].loc.offset = \
- (long)®s_->fprs[i_] - new_cfa_; \
- } \
- \
- /* Load return addr from PSW into dummy register 32. */ \
- (FS)->regs.reg[32].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[32].loc.offset = (long)®s_->psw_addr - new_cfa_; \
- (FS)->retaddr_column = 32; \
- \
- goto SUCCESS; \
- } while (0)
+/* Define if long doubles should be mangled as 'g'. */
+#define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING
#endif
OSDN Git Service
