215 lines
7.4 KiB
C
215 lines
7.4 KiB
C
/* Definitions of target machine for GNU compiler, for HPs running
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HPUX using the 64bit runtime model.
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Copyright (C) 1999, 2000 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* We can debug dynamically linked executables on hpux11; we also
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want dereferencing of a NULL pointer to cause a SEGV. */
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#undef LINK_SPEC
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#define LINK_SPEC \
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"-E %{mlinker-opt:-O} %{!shared:-u main} %{static:-a archive} %{shared:-shared}"
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/* Like the default, except no -lg. */
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#undef LIB_SPEC
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#define LIB_SPEC \
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"%{!shared:\
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%{!p:\
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%{!pg:\
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%{!threads:-lc}\
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%{threads:-lcma -lc_r}}\
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%{p: -L/lib/libp/ -lc}\
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%{pg: -L/lib/libp/ -lc}}} /usr/lib/pa20_64/milli.a"
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/* Under hpux11, the normal location of the `ld' and `as' programs is the
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/usr/ccs/bin directory. */
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#ifndef CROSS_COMPILE
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#undef MD_EXEC_PREFIX
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#define MD_EXEC_PREFIX "/opt/langtools/bin"
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#endif
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/* Under hpux11 the normal location of the various *crt*.o files is the
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/usr/ccs/lib directory. */
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#ifndef CROSS_COMPILE
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#undef MD_STARTFILE_PREFIX
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#define MD_STARTFILE_PREFIX "/opt/langtools/lib/pa20_64/"
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#endif
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/* hpux11 has the new HP assembler. It's still lousy, but it's a whole lot
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better than the assembler shipped with older versions of hpux. */
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#undef NEW_HP_ASSEMBLER
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#define NEW_HP_ASSEMBLER 1
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#undef ASM_FILE_START
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#define ASM_FILE_START(FILE) \
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do { \
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if (TARGET_64BIT) \
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fputs("\t.LEVEL 2.0w\n", FILE); \
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else if (TARGET_PA_20) \
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fputs("\t.LEVEL 2.0\n", FILE); \
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else if (TARGET_PA_11) \
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fputs("\t.LEVEL 1.1\n", FILE); \
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else \
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fputs("\t.LEVEL 1.0\n", FILE); \
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if (profile_flag)\
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fprintf (FILE, "\t.IMPORT _mcount, CODE\n");\
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if (write_symbols != NO_DEBUG) \
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output_file_directive ((FILE), main_input_filename); \
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} while (0)
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/* It looks like DWARF2 will be the easiest debug format to handle on this
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platform. */
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#define OBJECT_FORMAT_ELF
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#define DWARF2_DEBUGGING_INFO
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#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
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/* This isn't quite ready yet. I'm seeing it mess up some line
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tables. For example, we're getting lines starting/ending at
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impossible addresses. */
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#define DWARF2_ASM_LINE_DEBUG_INFO 1
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/* The rest of this file is copied from the generic svr4.h. One day we
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would like to simply include svr4.h instead of copying all these
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definitions. */
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/* Support const sections and the ctors and dtors sections for g++.
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Note that there appears to be two different ways to support const
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sections at the moment. You can either #define the symbol
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READONLY_DATA_SECTION (giving it some code which switches to the
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readonly data section) or else you can #define the symbols
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EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and
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SELECT_RTX_SECTION. We do both here just to be on the safe side. */
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#define USE_CONST_SECTION 1
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#define CONST_SECTION_ASM_OP "\t.section\t.rodata"
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/* On svr4, we *do* have support for the .init and .fini sections, and we
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can put stuff in there to be executed before and after `main'. We let
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crtstuff.c and other files know this by defining the following symbols.
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The definitions say how to change sections to the .init and .fini
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sections. This is the same for all known svr4 assemblers. */
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/* ??? For the time being, we aren't using init sections. */
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#if 0
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#define INIT_SECTION_ASM_OP "\t.section\t.init"
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#define FINI_SECTION_ASM_OP "\t.section\t.fini"
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#endif
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/* A default list of other sections which we might be "in" at any given
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time. For targets that use additional sections (e.g. .tdesc) you
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should override this definition in the target-specific file which
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includes this file. */
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#undef EXTRA_SECTIONS
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#define EXTRA_SECTIONS in_const
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/* A default list of extra section function definitions. For targets
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that use additional sections (e.g. .tdesc) you should override this
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definition in the target-specific file which includes this file. */
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#undef EXTRA_SECTION_FUNCTIONS
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#define EXTRA_SECTION_FUNCTIONS \
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CONST_SECTION_FUNCTION
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#define READONLY_DATA_SECTION() const_section ()
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#define CONST_SECTION_FUNCTION \
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void \
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const_section () \
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{ \
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if (!USE_CONST_SECTION) \
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text_section(); \
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else if (in_section != in_const) \
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{ \
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fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \
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in_section = in_const; \
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} \
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}
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/* Switch into a generic section. */
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#define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
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#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
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#define UNIQUE_SECTION(DECL,RELOC) \
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do { \
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int len; \
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char *name, *string, *prefix; \
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\
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name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
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\
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if (! DECL_ONE_ONLY (DECL)) \
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{ \
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prefix = "."; \
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if (TREE_CODE (DECL) == FUNCTION_DECL) \
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prefix = ".text."; \
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else if (DECL_READONLY_SECTION (DECL, RELOC)) \
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prefix = ".rodata."; \
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else \
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prefix = ".data."; \
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} \
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else if (TREE_CODE (DECL) == FUNCTION_DECL) \
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prefix = ".gnu.linkonce.t."; \
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else if (DECL_READONLY_SECTION (DECL, RELOC)) \
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prefix = ".gnu.linkonce.r."; \
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else \
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prefix = ".gnu.linkonce.d."; \
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\
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len = strlen (name) + strlen (prefix); \
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string = alloca (len + 1); \
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sprintf (string, "%s%s", prefix, name); \
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\
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DECL_SECTION_NAME (DECL) = build_string (len, string); \
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} while (0)
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#define INT_ASM_OP "\t.dword\t"
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/* Define the strings used for the special svr4 .type and .size directives.
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These strings generally do not vary from one system running svr4 to
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another, but if a given system (e.g. m88k running svr) needs to use
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different pseudo-op names for these, they may be overridden in the
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file which includes this one. */
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#define TYPE_ASM_OP "\t.type\t"
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#define SIZE_ASM_OP "\t.size\t"
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/* This is how we tell the assembler that a symbol is weak. */
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#define ASM_WEAKEN_LABEL(FILE,NAME) \
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do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
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fputc ('\n', FILE); } while (0)
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/* The following macro defines the format used to output the second
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operand of the .type assembler directive. Different svr4 assemblers
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expect various different forms for this operand. The one given here
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is just a default. You may need to override it in your machine-
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specific tm.h file (depending upon the particulars of your assembler). */
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#define TYPE_OPERAND_FMT "@%s"
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/* Write the extra assembler code needed to declare a function's result.
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Most svr4 assemblers don't require any special declaration of the
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result value, but there are exceptions. */
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#ifndef ASM_DECLARE_RESULT
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#define ASM_DECLARE_RESULT(FILE, RESULT)
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#endif
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