* config/i386/gnu-user.h: Copy from linux.h. Update comments.

	(LINK_EMULATION, GLIBC_DYNAMIC_LINKER): Remove.
	(SUBTARGET_EXTRA_SPECS): Use GNU_USER_LINK_EMULATION and
	GNU_USER_DYNAMIC_LINKER.
	(MD_UNWIND_SUPPORT, REG_NAME): Remove.
	* config/i386/gnu-user64.h: Copy from linux64.h.  Update comments.
	(GLIBC_DYNAMIC_LINKER32, GLIBC_DYNAMIC_LINKER64): Remove.
	(LINK_SPEC): Use GNU_USER_DYNAMIC_LINKER32 and
	GNU_USER_DYNAMIC_LINKER64.
	(MD_UNWIND_SUPPORT, REG_NAME): Remove.
	* config/i386/kfreebsd-gnu.h (LINK_EMULATION): Change to
	GNU_USER_LINK_EMULATION.
	* config/i386/linux.h (TARGET_ASM_FILE_START_FILE_DIRECTIVE,
	DEFAULT_PCC_STRUCT_RETURN, TARGET_TLS_DIRECT_SEG_REFS_DEFAULT,
	ASM_COMMENT_START, DBX_REGISTER_NUMBER, NO_PROFILE_COUNTERS,
	MCOUNT_NAME, SUBTARGET_FRAME_POINTER_REQUIRED, SIZE_TYPE,
	PTRDIFF_TYPE, WCHAR_TYPE, WCHAR_TYPE_SIZE, TARGET_OS_CPP_BUILTINS,
	CPP_SPEC, CC1_SPEC): Remove.
	(LINK_EMULATION): Change to GNU_USER_LINK_EMULATION.
	(GNU_USER_DYNAMIC_LINKER): Define.
	(ASM_SPEC, SUBTARGET_EXTRA_SPECS, LINK_SPEC, ENDFILE_SPEC,
	ASM_OUTPUT_ALIGNED_BSS, ASM_OUTPUT_MAX_SKIP_ALIGN,
	ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX, CRT_GET_RFIB_DATA,
	LIBGCC2_HAS_TF_MODE, LIBGCC2_TF_CEXT, TF_SIZE,
	TARGET_ASM_FILE_END, STACK_CHECK_MOVING_SP,
	STACK_CHECK_STATIC_BUILTIN, TARGET_THREAD_SSP_OFFSET,
	TARGET_CAN_SPLIT_STACK, TARGET_THREAD_SPLIT_STACK_OFFSET): Remove.
	* config/i386/linux64.h (TARGET_OS_CPP_BUILTINS, CPP_SPEC,
	CC1_SPEC, DEFAULT_PCC_STRUCT_RETURN,
	TARGET_TLS_DIRECT_SEG_REFS_DEFAULT, SPEC_32, SPEC_64, ASM_SPEC,
	LINK_SPEC, ENDFILE_SPEC, MULTILIB_DEFAULTS, LIBGCC2_HAS_TF_MODE,
	LIBGCC2_TF_CEXT, TF_SIZE, TARGET_ASM_FILE_END): Remove.
	(GNU_USER_DYNAMIC_LINKER32, GNU_USER_DYNAMIC_LINKER64): Define.
	(STACK_CHECK_MOVING_SP, STACK_CHECK_STATIC_BUILTIN,
	TARGET_THREAD_SSP_OFFSET, TARGET_CAN_SPLIT_STACK,
	TARGET_THREAD_SPLIT_STACK_OFFSET): Remove.
	* config/i386/gnu.h (GLIBC_DYNAMIC_LINKER): Change to
	GNU_USER_DYNAMIC_LINKER.
	* config/kfreebsd-gnu.h (GLIBC_DYNAMIC_LINKER): Change to
	GNU_USER_DYNAMIC_LINKER.  Unconditionally undefine and redefine.
	* config/knetbsd-gnu.h (GLIBC_DYNAMIC_LINKER): Change to
	GNU_USER_DYNAMIC_LINKER.  Unconditionally undefine and redefine.
	* config/kopensolaris-gnu.h (GLIBC_DYNAMIC_LINKER): Change to
	GNU_USER_DYNAMIC_LINKER.  Unconditionally undefine and redefine.
	* config.gcc (i[34567]86-*-linux* | i[34567]86-*-kfreebsd*-gnu |
	i[34567]86-*-knetbsd*-gnu | i[34567]86-*-gnu* |
	i[34567]86-*-kopensolaris*-gnu, x86_64-*-linux* |
	x86_64-*-kfreebsd*-gnu | x86_64-*-knetbsd*-gnu): Use the new
	headers.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@172271 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 204 insertions, 0 deletions

diff --git a/gcc/config/i386/gnu-user.h b/gcc/config/i386/gnu-user.h
new file mode 100644
index 00000000000..76a18acfe78
--- /dev/null
+++ b/gcc/config/i386/gnu-user.h
@@ -0,0 +1,204 @@
+/* Definitions for Intel 386 systems using GNU userspace.
+   Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2004, 2005,
+   2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+   Contributed by Eric Youngdale.
+   Modified for stabs-in-ELF by H.J. Lu.
+
+This file is part of GCC.
+
+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 3, or (at your option)
+any later version.
+
+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 GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+/* Output at beginning of assembler file.  */
+/* The .file command should always begin the output.  */
+#define TARGET_ASM_FILE_START_FILE_DIRECTIVE true
+
+/* The svr4 ABI for the i386 says that records and unions are returned
+   in memory.  */
+#undef DEFAULT_PCC_STRUCT_RETURN
+#define DEFAULT_PCC_STRUCT_RETURN 1
+
+/* We arrange for the whole %gs segment to map the tls area.  */
+#undef TARGET_TLS_DIRECT_SEG_REFS_DEFAULT
+#define TARGET_TLS_DIRECT_SEG_REFS_DEFAULT MASK_TLS_DIRECT_SEG_REFS
+
+#undef ASM_COMMENT_START
+#define ASM_COMMENT_START "#"
+
+#undef DBX_REGISTER_NUMBER
+#define DBX_REGISTER_NUMBER(n) \
+  (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
+
+/* Output assembler code to FILE to call the profiler.
+   To the best of my knowledge, no GNU userspace libc has required the label
+   argument to mcount.  */
+
+#define NO_PROFILE_COUNTERS	1
+
+#undef MCOUNT_NAME
+#define MCOUNT_NAME "mcount"
+
+/* The GLIBC version of mcount for the x86 assumes that there is a
+   frame, so we cannot allow profiling without a frame pointer.  */
+
+#undef SUBTARGET_FRAME_POINTER_REQUIRED
+#define SUBTARGET_FRAME_POINTER_REQUIRED crtl->profile
+
+#undef SIZE_TYPE
+#define SIZE_TYPE "unsigned int"
+ 
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE "int"
+  
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "long int"
+   
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE BITS_PER_WORD
+    
+#define TARGET_OS_CPP_BUILTINS()		\
+  do						\
+    {						\
+	LINUX_TARGET_OS_CPP_BUILTINS();		\
+    }						\
+  while (0)
+
+#undef CPP_SPEC
+#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
+
+#undef CC1_SPEC
+#define CC1_SPEC "%(cc1_cpu) %{profile:-p}"
+
+/* Provide a LINK_SPEC appropriate for GNU userspace.  Here we provide support
+   for the special GCC options -static and -shared, which allow us to
+   link things in one of these three modes by applying the appropriate
+   combinations of options at link-time.
+
+   When the -shared link option is used a final link is not being
+   done.  */
+
+#undef  ASM_SPEC
+#define ASM_SPEC \
+  "--32 %{!mno-sse2avx:%{mavx:-msse2avx}} %{msse2avx:%{!mavx:-msse2avx}}"
+
+#undef  SUBTARGET_EXTRA_SPECS
+#define SUBTARGET_EXTRA_SPECS \
+  { "link_emulation", GNU_USER_LINK_EMULATION },\
+  { "dynamic_linker", GNU_USER_DYNAMIC_LINKER }
+
+#undef	LINK_SPEC
+#define LINK_SPEC "-m %(link_emulation) %{shared:-shared} \
+  %{!shared: \
+    %{!static: \
+      %{rdynamic:-export-dynamic} \
+      -dynamic-linker %(dynamic_linker)} \
+      %{static:-static}}"
+
+/* Similar to standard GNU userspace, but adding -ffast-math support.  */
+#undef  ENDFILE_SPEC
+#define ENDFILE_SPEC \
+  "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
+   %{mpc32:crtprec32.o%s} \
+   %{mpc64:crtprec64.o%s} \
+   %{mpc80:crtprec80.o%s} \
+   %{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
+
+/* A C statement (sans semicolon) to output to the stdio stream
+   FILE the assembler definition of uninitialized global DECL named
+   NAME whose size is SIZE bytes and alignment is ALIGN bytes.
+   Try to use asm_output_aligned_bss to implement this macro.  */
+
+#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
+  asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
+
+/* A C statement to output to the stdio stream FILE an assembler
+   command to advance the location counter to a multiple of 1<<LOG
+   bytes if it is within MAX_SKIP bytes.
+
+   This is used to align code labels according to Intel recommendations.  */
+
+#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
+#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP)			\
+  do {									\
+    if ((LOG) != 0) {							\
+      if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG));	\
+      else {								\
+	fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP));	\
+	/* Make sure that we have at least 8 byte alignment if > 8 byte \
+	   alignment is preferred.  */					\
+	if ((LOG) > 3							\
+	    && (1 << (LOG)) > ((MAX_SKIP) + 1)				\
+	    && (MAX_SKIP) >= 7)						\
+	  fputs ("\t.p2align 3\n", (FILE));				\
+      }									\
+    }									\
+  } while (0)
+#endif
+
+/* Handle special EH pointer encodings.  Absolute, pc-relative, and
+   indirect are handled automatically.  */
+#define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \
+  do {									\
+    if ((SIZE) == 4 && ((ENCODING) & 0x70) == DW_EH_PE_datarel)		\
+      {									\
+        fputs (ASM_LONG, FILE);			\
+        assemble_name (FILE, XSTR (ADDR, 0));				\
+	fputs (((ENCODING) & DW_EH_PE_indirect ? "@GOT" : "@GOTOFF"), FILE); \
+        goto DONE;							\
+      }									\
+  } while (0)
+
+/* Used by crtstuff.c to initialize the base of data-relative relocations.
+   These are GOT relative on x86, so return the pic register.  */
+#ifdef __PIC__
+#define CRT_GET_RFIB_DATA(BASE)			\
+  {						\
+    register void *ebx_ __asm__("ebx");		\
+    BASE = ebx_;				\
+  }
+#else
+#define CRT_GET_RFIB_DATA(BASE)						\
+  __asm__ ("call\t.LPR%=\n"						\
+	   ".LPR%=:\n\t"						\
+	   "pop{l}\t%0\n\t"						\
+	   /* Due to a GAS bug, this cannot use EAX.  That encodes	\
+	      smaller than the traditional EBX, which results in the	\
+	      offset being off by one.  */				\
+	   "add{l}\t{$_GLOBAL_OFFSET_TABLE_+[.-.LPR%=],%0"		\
+		   "|%0,_GLOBAL_OFFSET_TABLE_+(.-.LPR%=)}"		\
+	   : "=d"(BASE))
+#endif
+
+/* Put all *tf routines in libgcc.  */
+#undef LIBGCC2_HAS_TF_MODE
+#define LIBGCC2_HAS_TF_MODE 1
+#define LIBGCC2_TF_CEXT q
+#define TF_SIZE 113
+
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+
+/* The stack pointer needs to be moved while checking the stack.  */
+#define STACK_CHECK_MOVING_SP 1
+
+/* Static stack checking is supported by means of probes.  */
+#define STACK_CHECK_STATIC_BUILTIN 1
+
+#ifdef TARGET_LIBC_PROVIDES_SSP
+/* i386 glibc provides __stack_chk_guard in %gs:0x14.  */
+#define TARGET_THREAD_SSP_OFFSET	0x14
+
+/* We steal the last transactional memory word.  */
+#define TARGET_CAN_SPLIT_STACK
+#define TARGET_THREAD_SPLIT_STACK_OFFSET 0x30
+#endif