OSDN Git Service

2007-05-04 Andreas Krebbel <krebbel1@de.ibm.com>
[pf3gnuchains/gcc-fork.git] / gcc / config / s390 / linux.h
index e4b3453..fd8ef0b 100644 (file)
@@ -1,24 +1,25 @@
 /* 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
@@ -53,29 +54,15 @@ Boston, MA 02111-1307, USA.  */
 #define TARGET_OS_CPP_BUILTINS()               \
   do                                           \
     {                                          \
-      builtin_define_std ("linux");            \
-      builtin_define_std ("unix");             \
-      builtin_assert ("system=linux");         \
-      builtin_assert ("system=unix");          \
-      builtin_define ("__gnu_linux__");                \
-      if (flag_pic)                            \
-        {                                      \
-          builtin_define ("__PIC__");          \
-          builtin_define ("__pic__");          \
-        }                                      \
+      LINUX_TARGET_OS_CPP_BUILTINS();          \
     }                                          \
   while (0)
 
 
 /* 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
+#define ASM_SPEC "%{m31&m64}%{mesa&mzarch}%{march=*}"
 
 
 /* Target specific linker settings.  */
@@ -86,124 +73,34 @@ Boston, MA 02111-1307, USA.  */
 #define MULTILIB_DEFAULTS { "m31" }
 #endif
 
-#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 GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1"
+#define GLIBC_DYNAMIC_LINKER64 "/lib/ld64.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}}}"
+       %{!dynamic-linker: \
+          %{m31:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "} \
+          %{m64:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}}}"
 
-#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
+#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
+
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
 
+#define MD_UNWIND_SUPPORT "config/s390/linux-unwind.h"
+
+#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
 
-/* 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 \
-  { "link_arch31",     LINK_ARCH31_SPEC },     \
-  { "link_arch64",     LINK_ARCH64_SPEC },     \
-
-#define ASM_FILE_END(FILE) \
-  do {                                                                 \
-    named_section_flags (".note.GNU-stack",                            \
-                        SECTION_DEBUG                                  \
-                        | (trampolines_created ? SECTION_CODE : 0));   \
-  } while (0)
-
-/* Do code reading to identify a signal frame, and set the frame
-   state data appropriately.  See unwind-dw2.c for the structs.  */
-
-#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)&regs_->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)&regs_->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)&regs_->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