/* Definitions of target machine for GNU compiler, for DEC Alpha w/ELF.
- Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2007, 2008,
+ 2009, 2010 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. */
-
-/* This is used on Alpha platforms that use the ELF format.
-Currently only Linux uses this. */
-
-#undef TARGET_VERSION
-#define TARGET_VERSION fprintf (stderr, " (Alpha Linux/ELF)");
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#undef OBJECT_FORMAT_COFF
#undef EXTENDED_COFF
#define OBJECT_FORMAT_ELF
-#define SDB_DEBUGGING_INFO
-
-#undef ASM_FINAL_SPEC
-
-#undef CPP_PREDEFINES
-#define CPP_PREDEFINES "\
--D__alpha -D__alpha__ -D__linux__ -D__linux -D_LONGLONG -Dlinux -Dunix \
--Asystem(linux) -Acpu(alpha) -Amachine(alpha) -D__ELF__"
-
-#undef LINK_SPEC
-#ifdef USE_GNULIBC_1
-#define LINK_SPEC "-m elf64alpha -G 8 %{O*:-O3} %{!O*:-O1} \
- %{shared:-shared} \
- %{!shared: \
- %{!static: \
- %{rdynamic:-export-dynamic} \
- %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}} \
- %{static:-static}}"
-#else
-#define LINK_SPEC "-m elf64alpha -G 8 %{O*:-O3} %{!O*:-O1} \
- %{shared:-shared} \
- %{!shared: \
- %{!static: \
- %{rdynamic:-export-dynamic} \
- %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}} \
- %{static:-static}}"
-#endif
-
-/* Output at beginning of assembler file. */
+/* ??? Move all SDB stuff from alpha.h to osf.h. */
+#undef SDB_DEBUGGING_INFO
+#undef MIPS_DEBUGGING_INFO
+#undef DBX_DEBUGGING_INFO
-#undef ASM_FILE_START
-#define ASM_FILE_START(FILE) \
-{ \
- alpha_write_verstamp (FILE); \
- output_file_directive (FILE, main_input_filename); \
- fprintf (FILE, "\t.version\t\"01.01\"\n"); \
- fprintf (FILE, "\t.set noat\n"); \
-}
+#define DWARF2_DEBUGGING_INFO 1
-#define ASM_OUTPUT_SOURCE_LINE(STREAM, LINE) \
- alpha_output_lineno (STREAM, LINE)
-extern void alpha_output_lineno ();
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
-extern void output_file_directive ();
+#undef ASM_FINAL_SPEC
-/* Attach a special .ident directive to the end of the file to identify
- the version of GCC which compiled this code. The format of the
- .ident string is patterned after the ones produced by native svr4
- C compilers. */
+/* alpha/ doesn't use elfos.h for some reason. */
+#define TARGET_OBJFMT_CPP_BUILTINS() \
+ do \
+ { \
+ builtin_define ("__ELF__"); \
+ } \
+ while (0)
-#define IDENT_ASM_OP ".ident"
+#undef CC1_SPEC
+#define CC1_SPEC "%{G*}"
-#ifdef IDENTIFY_WITH_IDENT
-#define ASM_IDENTIFY_GCC(FILE) /* nothing */
-#define ASM_IDENTIFY_LANGUAGE(FILE) \
- fprintf(FILE, "\t%s \"GCC (%s) %s\"\n", IDENT_ASM_OP, \
- lang_identify(), version_string)
-#else
-#define ASM_FILE_END(FILE) \
-do { \
- fprintf ((FILE), "\t%s\t\"GCC: (GNU) %s\"\n", \
- IDENT_ASM_OP, version_string); \
- } while (0)
-#endif
+#undef ASM_SPEC
+#define ASM_SPEC "%{G*} %{relax:-relax} %{!gstabs*:-no-mdebug}%{gstabs*:-mdebug}"
-/* Allow #sccs in preprocessor. */
-
-#define SCCS_DIRECTIVE
+#undef IDENT_ASM_OP
+#define IDENT_ASM_OP "\t.ident\t"
/* Output #ident as a .ident. */
-
+#undef ASM_OUTPUT_IDENT
#define ASM_OUTPUT_IDENT(FILE, NAME) \
- fprintf (FILE, "\t%s\t\"%s\"\n", IDENT_ASM_OP, NAME);
+ fprintf (FILE, "%s\"%s\"\n", IDENT_ASM_OP, NAME);
/* This is how to allocate empty space in some section. The .zero
pseudo-op is used for this on most svr4 assemblers. */
-#define SKIP_ASM_OP ".zero"
+#undef SKIP_ASM_OP
+#define SKIP_ASM_OP "\t.zero\t"
-#undef ASM_OUTPUT_SKIP
-#define ASM_OUTPUT_SKIP(FILE,SIZE) \
- fprintf (FILE, "\t%s\t%u\n", SKIP_ASM_OP, (SIZE))
+#undef ASM_OUTPUT_SKIP
+#define ASM_OUTPUT_SKIP(FILE, 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
make sure that the location counter for the .rodata section gets pro-
perly re-aligned prior to the actual beginning of the jump table. */
-#define ALIGN_ASM_OP ".align"
+#undef ALIGN_ASM_OP
+#define ALIGN_ASM_OP "\t.align\t"
#ifndef ASM_OUTPUT_BEFORE_CASE_LABEL
-#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \
+#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE, PREFIX, NUM, TABLE) \
ASM_OUTPUT_ALIGN ((FILE), 2);
#endif
-#undef ASM_OUTPUT_CASE_LABEL
-#define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,JUMPTABLE) \
+#undef ASM_OUTPUT_CASE_LABEL
+#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
library routines (e.g. .udiv) be explicitly declared as .globl
in each assembly file where they are referenced. */
+#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,
the linker seems to want the alignment of data objects
to depend on their types. We do exactly that here. */
-#define COMMON_ASM_OP ".comm"
+#undef COMMON_ASM_OP
+#define COMMON_ASM_OP "\t.comm\t"
-#undef ASM_OUTPUT_ALIGNED_COMMON
+#undef ASM_OUTPUT_ALIGNED_COMMON
#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
do { \
- fprintf ((FILE), "\t%s\t", COMMON_ASM_OP); \
+ 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
the linker seems to want the alignment of data objects
to depend on their types. We do exactly that here. */
-#define LOCAL_ASM_OP ".local"
-
-#undef ASM_OUTPUT_ALIGNED_LOCAL
+#undef ASM_OUTPUT_ALIGNED_LOCAL
#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
do { \
- fprintf ((FILE), "\t%s\t", LOCAL_ASM_OP); \
- assemble_name ((FILE), (NAME)); \
- fprintf ((FILE), "\n"); \
- ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \
+ if ((SIZE) <= (unsigned HOST_WIDE_INT) g_switch_value) \
+ switch_to_section (sbss_section); \
+ else \
+ switch_to_section (bss_section); \
+ ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
+ if (!flag_inhibit_size_directive) \
+ 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) ? (SIZE) : 1); \
} while (0)
-/* This is the pseudo-op used to generate a 64-bit word of data with a
- specific value in some section. */
-
-#define INT_ASM_OP ".quad"
-
-/* This is the pseudo-op used to generate a contiguous sequence of byte
- values from a double-quoted string WITHOUT HAVING A TERMINATING NUL
- AUTOMATICALLY APPENDED. This is the same for most svr4 assemblers. */
+/* This says how to output assembler code to declare an
+ uninitialized external linkage data object. */
-#undef ASCII_DATA_ASM_OP
-#define ASCII_DATA_ASM_OP ".ascii"
+#undef ASM_OUTPUT_ALIGNED_BSS
+#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
+do { \
+ ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN); \
+} while (0)
-/* Support const sections and the ctors and dtors sections for g++.
- Note that there appears to be two different ways to support const
- sections at the moment. You can either #define the symbol
- READONLY_DATA_SECTION (giving it some code which switches to the
- readonly data section) or else you can #define the symbols
- EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and
- SELECT_RTX_SECTION. We do both here just to be on the safe side. */
+/* 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.
-#define USE_CONST_SECTION 1
+ This value is really 2^63. Since gcc figures the alignment in bits,
+ 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. */
-#define CONST_SECTION_ASM_OP ".section\t.rodata"
+#undef MAX_OFILE_ALIGNMENT
+#define MAX_OFILE_ALIGNMENT (((unsigned int) 1 << 28) * 8)
-/* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
+/* This is the pseudo-op used to generate a contiguous sequence of byte
+ values from a double-quoted string WITHOUT HAVING A TERMINATING NUL
+ AUTOMATICALLY APPENDED. This is the same for most svr4 assemblers. */
- Note that we want to give these sections the SHF_WRITE attribute
- because these sections will actually contain data (i.e. tables of
- addresses of functions in the current root executable or shared library
- file) and, in the case of a shared library, the relocatable addresses
- will have to be properly resolved/relocated (and then written into) by
- the dynamic linker when it actually attaches the given shared library
- to the executing process. (Note that on SVR4, you may wish to use the
- `-z text' option to the ELF linker, when building a shared library, as
- an additional check that you are doing everything right. But if you do
- use the `-z text' option when building a shared library, you will get
- errors unless the .ctors and .dtors sections are marked as writable
- via the SHF_WRITE attribute.) */
+#undef ASCII_DATA_ASM_OP
+#define ASCII_DATA_ASM_OP "\t.ascii\t"
-#define CTORS_SECTION_ASM_OP ".section\t.ctors,\"aw\""
-#define DTORS_SECTION_ASM_OP ".section\t.dtors,\"aw\""
+#undef READONLY_DATA_SECTION_ASM_OP
+#define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rodata"
+#undef BSS_SECTION_ASM_OP
+#define BSS_SECTION_ASM_OP "\t.section\t.bss"
+#undef SBSS_SECTION_ASM_OP
+#define SBSS_SECTION_ASM_OP "\t.section\t.sbss,\"aw\""
+#undef SDATA_SECTION_ASM_OP
+#define SDATA_SECTION_ASM_OP "\t.section\t.sdata,\"aw\""
/* On svr4, we *do* have support for the .init and .fini sections, and we
can put stuff in there to be executed before and after `main'. We let
The definitions say how to change sections to the .init and .fini
sections. This is the same for all known svr4 assemblers. */
-#define INIT_SECTION_ASM_OP ".section\t.init"
-#define FINI_SECTION_ASM_OP ".section\t.fini"
-
-/* 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_const, in_ctors, in_dtors
-
-/* 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 \
- CONST_SECTION_FUNCTION \
- CTORS_SECTION_FUNCTION \
- DTORS_SECTION_FUNCTION
-
-#undef READONLY_DATA_SECTION
-#define READONLY_DATA_SECTION() const_section ()
-
-extern void text_section ();
-
-#define CONST_SECTION_FUNCTION \
-void \
-const_section () \
-{ \
- if (!USE_CONST_SECTION) \
- text_section(); \
- else if (in_section != in_const) \
- { \
- fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \
- in_section = in_const; \
- } \
-}
-
-#define CTORS_SECTION_FUNCTION \
-void \
-ctors_section () \
-{ \
- if (in_section != in_ctors) \
- { \
- fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \
- in_section = in_ctors; \
- } \
-}
-
-#define DTORS_SECTION_FUNCTION \
-void \
-dtors_section () \
-{ \
- if (in_section != in_dtors) \
- { \
- fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \
- in_section = in_dtors; \
- } \
-}
-
-/* Switch into a generic section.
- This is currently only used to support section attributes.
-
- We make the section read-only and executable for a function decl,
- read-only for a const data decl, and writable for a non-const data decl. */
-#define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME, RELOC) \
- fprintf (FILE, ".section\t%s,\"%s\",@progbits\n", NAME, \
- (DECL) && TREE_CODE (DECL) == FUNCTION_DECL ? "ax" : \
- (DECL) && DECL_READONLY_SECTION (DECL, RELOC) ? "a" : "aw")
-
-
-/* A C statement (sans semicolon) to output an element in the table of
- global constructors. */
-#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
- do { \
- ctors_section (); \
- fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
- assemble_name (FILE, NAME); \
- fprintf (FILE, "\n"); \
- } while (0)
+#undef INIT_SECTION_ASM_OP
+#define INIT_SECTION_ASM_OP "\t.section\t.init"
+#undef FINI_SECTION_ASM_OP
+#define FINI_SECTION_ASM_OP "\t.section\t.fini"
-/* A C statement (sans semicolon) to output an element in the table of
- global destructors. */
-#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
- do { \
- dtors_section (); \
- fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
- assemble_name (FILE, NAME); \
- fprintf (FILE, "\n"); \
- } while (0)
+#ifdef HAVE_GAS_SUBSECTION_ORDERING
-/* A C statement or statements to switch to the appropriate
- section for output of DECL. DECL is either a `VAR_DECL' node
- or a constant of some sort. RELOC indicates whether forming
- the initial value of DECL requires link-time relocations. */
-
-#define SELECT_SECTION(DECL,RELOC) \
-{ \
- if (TREE_CODE (DECL) == STRING_CST) \
- { \
- if (! flag_writable_strings) \
- const_section (); \
- else \
- data_section (); \
- } \
- else if (TREE_CODE (DECL) == VAR_DECL) \
- { \
- if ((flag_pic && RELOC) \
- || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \
- || !DECL_INITIAL (DECL) \
- || (DECL_INITIAL (DECL) != error_mark_node \
- && !TREE_CONSTANT (DECL_INITIAL (DECL)))) \
- data_section (); \
- else \
- const_section (); \
- } \
- else \
- const_section (); \
-}
+#define ASM_SECTION_START_OP "\t.subsection\t-1"
+
+/* Output assembly directive to move to the beginning of current section. */
+#define ASM_OUTPUT_SECTION_START(FILE) \
+ fprintf ((FILE), "%s\n", ASM_SECTION_START_OP)
-/* 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. */
+#endif
-#undef SELECT_RTX_SECTION
-#define SELECT_RTX_SECTION(MODE,RTX) const_section()
+/* 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)
/* Define the strings used for the special svr4 .type and .size directives.
These strings generally do not vary from one system running svr4 to
different pseudo-op names for these, they may be overridden in the
file which includes this one. */
-#define TYPE_ASM_OP ".type"
-#define SIZE_ASM_OP ".size"
+#undef TYPE_ASM_OP
+#define TYPE_ASM_OP "\t.type\t"
+#undef SIZE_ASM_OP
+#define SIZE_ASM_OP "\t.size\t"
/* This is how we tell the assembler that a symbol is weak. */
-#define ASM_WEAKEN_LABEL(FILE,NAME) \
+#undef ASM_WEAKEN_LABEL
+#define ASM_WEAKEN_LABEL(FILE, NAME) \
do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
fputc ('\n', FILE); } while (0)
/* This is how we tell the assembler that two symbols have the same value. */
-#define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \
- do { assemble_name(FILE, NAME1); \
- fputs(" = ", FILE); \
- assemble_name(FILE, NAME2); \
- fputc('\n', FILE); } while (0)
+#undef ASM_OUTPUT_DEF
+#define ASM_OUTPUT_DEF(FILE, ALIAS, NAME) \
+ do { \
+ assemble_name(FILE, ALIAS); \
+ fputs(" = ", FILE); \
+ assemble_name(FILE, NAME); \
+ fputc('\n', FILE); \
+ } while (0)
+
+#undef ASM_OUTPUT_DEF_FROM_DECLS
+#define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET) \
+ do { \
+ const char *alias = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
+ const char *name = IDENTIFIER_POINTER (TARGET); \
+ if (TREE_CODE (DECL) == FUNCTION_DECL) \
+ { \
+ fputc ('$', FILE); \
+ assemble_name (FILE, alias); \
+ fputs ("..ng = $", FILE); \
+ assemble_name (FILE, name); \
+ fputs ("..ng\n", FILE); \
+ } \
+ assemble_name(FILE, alias); \
+ fputs(" = ", FILE); \
+ assemble_name(FILE, name); \
+ fputc('\n', FILE); \
+ } while (0)
/* The following macro defines the format used to output the second
operand of the .type assembler directive. Different svr4 assemblers
is just a default. You may need to override it in your machine-
specific tm.h file (depending upon the particulars of your assembler). */
+#undef TYPE_OPERAND_FMT
#define TYPE_OPERAND_FMT "@%s"
/* Write the extra assembler code needed to declare a function's result.
/* 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 { \
- fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
- assemble_name (FILE, NAME); \
- putc (',', FILE); \
- fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
- putc ('\n', FILE); \
+ HOST_WIDE_INT size; \
+ \
+ /* For template static data member instantiations or \
+ inline fn local statics and their guard variables, use \
+ gnu_unique_object so that they will be combined even under \
+ RTLD_LOCAL. Don't use gnu_unique_object for typeinfo, \
+ vtables and other read-only artificial decls. */ \
+ if (USE_GNU_UNIQUE_OBJECT && DECL_ONE_ONLY (DECL) \
+ && (!DECL_ARTIFICIAL (DECL) || !TREE_READONLY (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_SIZE (DECL)) \
+ if (!flag_inhibit_size_directive \
+ && (DECL) && DECL_SIZE (DECL)) \
{ \
size_directive_output = 1; \
- fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
- assemble_name (FILE, NAME); \
- fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
+ size = int_size_in_bytes (TREE_TYPE (DECL)); \
+ ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size); \
} \
- ASM_OUTPUT_LABEL(FILE, NAME); \
+ \
+ ASM_OUTPUT_LABEL (FILE, NAME); \
} while (0)
/* Output the size directive for a decl in rest_of_decl_compilation
size_directive_output was set
by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
-#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
-do { \
- char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
- if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
- && ! AT_END && TOP_LEVEL \
- && DECL_INITIAL (DECL) == error_mark_node \
- && !size_directive_output) \
- { \
- size_directive_output = 1; \
- fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
- assemble_name (FILE, name); \
- fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
- } \
- } while (0)
+#undef ASM_FINISH_DECLARE_OBJECT
+#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
+ do { \
+ const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
+ HOST_WIDE_INT size; \
+ if (!flag_inhibit_size_directive \
+ && DECL_SIZE (DECL) \
+ && ! AT_END && TOP_LEVEL \
+ && DECL_INITIAL (DECL) == error_mark_node \
+ && !size_directive_output \
+ && (size = int_size_in_bytes (TREE_TYPE (DECL))) > 0) \
+ { \
+ size_directive_output = 1; \
+ ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size); \
+ } \
+ } while (0)
/* A table of bytes codes used by the ASM_OUTPUT_ASCII and
ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table
the i386) don't know about that. Also, we don't use \v
since some versions of gas, such as 2.2 did not accept it. */
-#define ESCAPES \
+#undef ELF_ASCII_ESCAPES
+#define ELF_ASCII_ESCAPES \
"\1\1\1\1\1\1\1\1btn\1fr\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
\0\0\"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\\\0\0\0\
escape sequence like \377 would count as four bytes.
If your target assembler doesn't support the .string directive, you
- should define this to zero.
-*/
+ should define this to zero. */
-#define STRING_LIMIT ((unsigned) 256)
+#undef ELF_STRING_LIMIT
+#define ELF_STRING_LIMIT ((unsigned) 256)
-#define STRING_ASM_OP ".string"
+#undef STRING_ASM_OP
+#define STRING_ASM_OP "\t.string\t"
-/*
- * We always use gas here, so we don't worry about ECOFF assembler problems.
- */
-#undef TARGET_GAS
+/* GAS is the only Alpha/ELF assembler. */
+#undef TARGET_GAS
#define TARGET_GAS (1)
-#undef PREFERRED_DEBUGGING_TYPE
-#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
+/* 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'. */
-/* Provide a STARTFILE_SPEC appropriate for Linux. Here we add
- the Linux magical crtbegin.o file (see crtstuff.c) which
- provides part of the support for getting C++ file-scope static
- object constructed before entering `main'. */
-
#undef STARTFILE_SPEC
+#ifdef HAVE_LD_PIE
#define STARTFILE_SPEC \
- "%{!shared: \
- %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
- crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
+ "%{!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|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 Linux. Here we tack on
- the Linux magical crtend.o file (see crtstuff.c) which
- provides part of the support for getting C++ file-scope static
- object constructed before entering `main', followed by a normal
- Linux "finalizer" file, `crtn.o'. */
+/* Provide a ENDFILE_SPEC appropriate for ELF. Here we tack on the
+ magical crtend.o file which provides part of the support for
+ getting C++ file-scope static object constructed before entering
+ `main', followed by a normal ELF "finalizer" file, `crtn.o'. */
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
- "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
+ "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
+ %{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
+
+/* 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
+ true if the symbol may be affected by dynamic relocations.
+
+ Since application size is already constrained to <2GB by the form of
+ the ldgp relocation, we can use a 32-bit pc-relative relocation to
+ static data. Dynamic data is accessed indirectly to allow for read
+ only EH sections. */
+#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
+ (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4)
+
+/* If defined, a C statement to be executed just prior to the output of
+ assembler code for INSN. */
+#define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) \
+ (alpha_this_literal_sequence_number = 0, \
+ alpha_this_gpdisp_sequence_number = 0)
+extern int alpha_this_literal_sequence_number;
+extern int alpha_this_gpdisp_sequence_number;
+
+/* Since the bits of the _init and _fini function is spread across
+ many object files, each potentially with its own GP, we must assume
+ we need to load our GP. Further, the .init/.fini section can
+ easily be more than 4MB away from the function to call so we can't
+ use bsr. */
+#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
+ asm (SECTION_OP "\n" \
+" br $29,1f\n" \
+"1: ldgp $29,0($29)\n" \
+" unop\n" \
+" jsr $26," USER_LABEL_PREFIX #FUNC "\n" \
+" .align 3\n" \
+" .previous");
+
+/* If we have the capability create headers for efficient EH lookup.
+ As of Jan 2002, only glibc 2.2.4 can actually make use of this, but
+ I imagine that other systems will catch up. In the meantime, it
+ doesn't harm to make sure that the data exists to be used later. */
+#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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