/* Definitions of target machine for GNU compiler, for DEC Alpha w/ELF.
- Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002
- Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2007, 2008,
+ 2009 Free Software Foundation, Inc.
Contributed by Richard Henderson (rth@tamu.edu).
-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
+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)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
-GNU CC is distributed in the hope that it will be useful,
+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 COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#undef OBJECT_FORMAT_COFF
#undef EXTENDED_COFF
/* ??? Move all SDB stuff from alpha.h to osf.h. */
#undef SDB_DEBUGGING_INFO
-#define DBX_DEBUGGING_INFO
-#define DWARF2_DEBUGGING_INFO
+#define DBX_DEBUGGING_INFO 1
+#define DWARF2_DEBUGGING_INFO 1
#undef PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
#undef ASM_FINAL_SPEC
-#undef CPP_SUBTARGET_SPEC
-#define CPP_SUBTARGET_SPEC "-D__ELF__"
+/* alpha/ doesn't use elfos.h for some reason. */
+#define TARGET_OBJFMT_CPP_BUILTINS() \
+ do \
+ { \
+ builtin_define ("__ELF__"); \
+ } \
+ while (0)
#undef CC1_SPEC
#define CC1_SPEC "%{G*}"
#undef ASM_SPEC
#define ASM_SPEC "%{G*} %{relax:-relax} %{!gstabs*:-no-mdebug}%{gstabs*:-mdebug}"
-/* Output at beginning of assembler file. */
-#undef ASM_FILE_START
-#define ASM_FILE_START(FILE) \
-do { \
- if (write_symbols == DBX_DEBUG) \
- { \
- alpha_write_verstamp (FILE); \
- output_file_directive (FILE, main_input_filename); \
- } \
- fprintf (FILE, "\t.set noat\n"); \
- fprintf (FILE, "\t.set noreorder\n"); \
- if (TARGET_EXPLICIT_RELOCS) \
- fprintf (FILE, "\t.set nomacro\n"); \
- if (TARGET_BWX | TARGET_MAX | TARGET_FIX | TARGET_CIX) \
- { \
- fprintf (FILE, "\t.arch %s\n", \
- (TARGET_CPU_EV6 ? "ev6" \
- : TARGET_MAX ? "pca56" : "ev56")); \
- } \
-} while (0)
-
#undef IDENT_ASM_OP
#define IDENT_ASM_OP "\t.ident\t"
-/* Allow #sccs in preprocessor. */
-#define SCCS_DIRECTIVE
-
/* Output #ident as a .ident. */
#undef ASM_OUTPUT_IDENT
#define ASM_OUTPUT_IDENT(FILE, NAME) \
#undef ASM_OUTPUT_SKIP
#define ASM_OUTPUT_SKIP(FILE, SIZE) \
- fprintf (FILE, "%s%u\n", SKIP_ASM_OP, (SIZE))
+ fprintf (FILE, "%s"HOST_WIDE_INT_PRINT_UNSIGNED"\n", SKIP_ASM_OP, (SIZE))
/* Output the label which precedes a jumptable. Note that for all svr4
systems where we actually generate jumptables (which is to say every
#define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, JUMPTABLE) \
do { \
ASM_OUTPUT_BEFORE_CASE_LABEL (FILE, PREFIX, NUM, JUMPTABLE) \
- ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \
+ (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM); \
} while (0)
/* The standard SVR4 assembler seems to require that certain builtin
#undef ASM_OUTPUT_EXTERNAL_LIBCALL
#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
- ASM_GLOBALIZE_LABEL (FILE, XSTR (FUN, 0))
+ (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0))
/* This says how to output assembler code to declare an
uninitialized external linkage data object. Under SVR4,
do { \
fprintf ((FILE), "%s", COMMON_ASM_OP); \
assemble_name ((FILE), (NAME)); \
- fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \
+ fprintf ((FILE), "," HOST_WIDE_INT_PRINT_UNSIGNED ",%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \
} while (0)
/* This says how to output assembler code to declare an
#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
do { \
if ((SIZE) <= g_switch_value) \
- sbss_section(); \
+ switch_to_section (sbss_section); \
else \
- bss_section(); \
- fprintf (FILE, "%s", TYPE_ASM_OP); \
- assemble_name (FILE, NAME); \
- putc (',', FILE); \
- fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
- putc ('\n', FILE); \
+ switch_to_section (bss_section); \
+ ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
if (!flag_inhibit_size_directive) \
- { \
- fprintf (FILE, "%s", SIZE_ASM_OP); \
- assemble_name (FILE, NAME); \
- fprintf (FILE, ",%d\n", (SIZE)); \
- } \
+ ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, SIZE); \
ASM_OUTPUT_ALIGN ((FILE), exact_log2((ALIGN) / BITS_PER_UNIT)); \
ASM_OUTPUT_LABEL(FILE, NAME); \
- ASM_OUTPUT_SKIP((FILE), (SIZE)); \
+ ASM_OUTPUT_SKIP((FILE), (SIZE) ? (SIZE) : 1); \
} while (0)
/* This says how to output assembler code to declare an
#undef ASM_OUTPUT_ALIGNED_BSS
#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
do { \
- ASM_GLOBALIZE_LABEL (FILE, NAME); \
ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN); \
} while (0)
-/* Biggest alignment supported by the object file format of this
- machine. Use this macro to limit the alignment which can be
- specified using the `__attribute__ ((aligned (N)))' construct. If
- not defined, the default value is `BIGGEST_ALIGNMENT'.
+/* The biggest alignment supported by ELF in bits. 32-bit ELF
+ supports section alignment up to (0x80000000 * 8), while
+ 64-bit ELF supports (0x8000000000000000 * 8). If this macro
+ is not defined, the default is the largest alignment supported
+ by 32-bit ELF and representable on a 32-bit host. Use this
+ macro to limit the alignment which can be specified using
+ the `__attribute__ ((aligned (N)))' construct.
This value is really 2^63. Since gcc figures the alignment in bits,
- we could only potentially get to 2^60 on suitible hosts. Due to other
+ we could only potentially get to 2^60 on suitable hosts. Due to other
considerations in varasm, we must restrict this to what fits in an int. */
#undef MAX_OFILE_ALIGNMENT
-#define MAX_OFILE_ALIGNMENT \
- (1 << (HOST_BITS_PER_INT < 64 ? HOST_BITS_PER_INT - 2 : 62))
+#define MAX_OFILE_ALIGNMENT (((unsigned int) 1 << 28) * 8)
/* This is the pseudo-op used to generate a contiguous sequence of byte
values from a double-quoted string WITHOUT HAVING A TERMINATING NUL
#endif
-/* A default list of other sections which we might be "in" at any given
- time. For targets that use additional sections (e.g. .tdesc) you
- should override this definition in the target-specific file which
- includes this file. */
-
-#undef EXTRA_SECTIONS
-#define EXTRA_SECTIONS in_sbss, in_sdata
-
-/* A default list of extra section function definitions. For targets
- that use additional sections (e.g. .tdesc) you should override this
- definition in the target-specific file which includes this file. */
-
-#undef EXTRA_SECTION_FUNCTIONS
-#define EXTRA_SECTION_FUNCTIONS \
- SECTION_FUNCTION_TEMPLATE(sbss_section, in_sbss, SBSS_SECTION_ASM_OP) \
- SECTION_FUNCTION_TEMPLATE(sdata_section, in_sdata, SDATA_SECTION_ASM_OP)
-
-extern void sbss_section PARAMS ((void));
-extern void sdata_section PARAMS ((void));
-
-#undef SECTION_FUNCTION_TEMPLATE
-#define SECTION_FUNCTION_TEMPLATE(FN, ENUM, OP) \
-void FN () \
-{ \
- if (in_section != ENUM) \
- { \
- fprintf (asm_out_file, "%s\n", OP); \
- in_section = ENUM; \
- } \
-}
-
/* Switch into a generic section. */
#define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
#define TARGET_ASM_SELECT_SECTION default_elf_select_section
#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
-/* A C statement or statements to switch to the appropriate
- section for output of RTX in mode MODE. RTX is some kind
- of constant in RTL. The argument MODE is redundant except
- in the case of a `const_int' rtx. Currently, these always
- go into the const section. */
-
-#undef SELECT_RTX_SECTION
-#define SELECT_RTX_SECTION(MODE, RTX, ALIGN) \
-do { \
- if (TARGET_SMALL_DATA && GET_MODE_SIZE (MODE) <= g_switch_value) \
- /* ??? Consider .sdata.{lit4,lit8} as SHF_MERGE|SHF_ALPHA_GPREL. */ \
- sdata_section (); \
- else \
- mergeable_constant_section((MODE), (ALIGN), 0); \
-} while (0)
-
/* Define the strings used for the special svr4 .type and .size directives.
These strings generally do not vary from one system running svr4 to
another, but if a given system (e.g. m88k running svr) needs to use
/* Write the extra assembler code needed to declare an object properly. */
+#ifdef HAVE_GAS_GNU_UNIQUE_OBJECT
+#define USE_GNU_UNIQUE_OBJECT 1
+#else
+#define USE_GNU_UNIQUE_OBJECT 0
+#endif
+
#undef ASM_DECLARE_OBJECT_NAME
-#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
- do { \
- HOST_WIDE_INT size; \
- fprintf (FILE, "%s", TYPE_ASM_OP); \
- assemble_name (FILE, NAME); \
- putc (',', FILE); \
- fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
- putc ('\n', FILE); \
- size_directive_output = 0; \
- if (!flag_inhibit_size_directive \
- && DECL_SIZE (DECL) \
- && (size = int_size_in_bytes (TREE_TYPE (DECL))) > 0) \
- { \
- size_directive_output = 1; \
- fprintf (FILE, "%s", SIZE_ASM_OP); \
- assemble_name (FILE, NAME); \
- fputc (',', FILE); \
- fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, size); \
- fputc ('\n', FILE); \
- } \
- ASM_OUTPUT_LABEL(FILE, NAME); \
+#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
+ do { \
+ HOST_WIDE_INT size; \
+ \
+ /* For template static data member instantiations or \
+ inline fn local statics, use gnu_unique_object so that \
+ they will be combined even under RTLD_LOCAL. */ \
+ if (USE_GNU_UNIQUE_OBJECT \
+ && !DECL_ARTIFICIAL (DECL) && DECL_ONE_ONLY (DECL)) \
+ ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "gnu_unique_object"); \
+ else \
+ ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
+ \
+ size_directive_output = 0; \
+ if (!flag_inhibit_size_directive \
+ && (DECL) && DECL_SIZE (DECL)) \
+ { \
+ size_directive_output = 1; \
+ size = int_size_in_bytes (TREE_TYPE (DECL)); \
+ ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size); \
+ } \
+ \
+ ASM_OUTPUT_LABEL (FILE, NAME); \
} while (0)
/* Output the size directive for a decl in rest_of_decl_compilation
&& (size = int_size_in_bytes (TREE_TYPE (DECL))) > 0) \
{ \
size_directive_output = 1; \
- fprintf (FILE, "%s", SIZE_ASM_OP); \
- assemble_name (FILE, name); \
- fputc (',', FILE); \
- fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, size); \
- fputc ('\n', FILE); \
+ ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size); \
} \
} while (0)
/* Provide a STARTFILE_SPEC appropriate for ELF. Here we add the
(even more) magical crtbegin.o file which provides part of the
support for getting C++ file-scope static object constructed
- before entering `main'. */
+ before entering `main'. */
#undef STARTFILE_SPEC
+#ifdef HAVE_LD_PIE
+#define STARTFILE_SPEC \
+ "%{!shared: %{pg|p:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}}\
+ crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
+#else
#define STARTFILE_SPEC \
- "%{!shared: \
- %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
- crti.o%s %{static:crtbeginT.o%s}\
- %{!static:%{shared:crtbeginS.o%s}%{!shared:crtbegin.o%s}}"
+ "%{!shared: %{pg|p:gcrt1.o%s;:crt1.o%s}}\
+ crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
+#endif
/* Provide a ENDFILE_SPEC appropriate for ELF. Here we tack on the
magical crtend.o file which provides part of the support for
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
"%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
- %{shared:crtendS.o%s}%{!shared:crtend.o%s} crtn.o%s"
+ %{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
/* We support #pragma. */
-#define HANDLE_SYSV_PRAGMA
+#define HANDLE_SYSV_PRAGMA 1
/* Select a format to encode pointers in exception handling data. CODE
is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
#if defined(HAVE_LD_EH_FRAME_HDR)
#define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
#endif
+
+/* A C statement (sans semicolon) to output to the stdio stream STREAM
+ any text necessary for declaring the name of an external symbol
+ named NAME which is referenced in this compilation but not defined.
+ It is needed to properly support non-default visibility. */
+
+#ifndef ASM_OUTPUT_EXTERNAL
+#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \
+ default_elf_asm_output_external (FILE, DECL, NAME)
+#endif
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