| /* Definitions of target machine for GNU compiler, for HPs running |
| HPUX using the 64bit runtime model. |
| Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc. |
| |
| This file is part of GNU CC. |
| |
| 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. |
| |
| 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. |
| |
| 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. */ |
| |
| /* We can debug dynamically linked executables on hpux11; we also |
| want dereferencing of a NULL pointer to cause a SEGV. */ |
| #undef LINK_SPEC |
| #define LINK_SPEC \ |
| "-E %{mlinker-opt:-O} %{!shared:-u main} %{static:-a archive} %{shared:-shared}" |
| |
| /* Like the default, except no -lg. */ |
| #undef LIB_SPEC |
| #define LIB_SPEC \ |
| "%{!shared:\ |
| %{!p:\ |
| %{!pg:\ |
| %{!threads:-lc}\ |
| %{threads:-lcma -lc_r}}\ |
| %{p: -L/lib/libp/ -lc}\ |
| %{pg: -L/lib/libp/ -lc}}} /usr/lib/pa20_64/milli.a" |
| |
| /* Under hpux11, the normal location of the `ld' and `as' programs is the |
| /usr/ccs/bin directory. */ |
| |
| #ifndef CROSS_COMPILE |
| #undef MD_EXEC_PREFIX |
| #define MD_EXEC_PREFIX "/usr/ccs/bin" |
| #endif |
| |
| /* Under hpux11 the normal location of the various pa20_64 *crt*.o files |
| is the /usr/ccs/lib/pa20_64 directory. Some files may also be in the |
| /opt/langtools/lib/pa20_64 directory. */ |
| |
| #ifndef CROSS_COMPILE |
| #undef MD_STARTFILE_PREFIX |
| #define MD_STARTFILE_PREFIX "/usr/ccs/lib/pa20_64/" |
| #endif |
| |
| #ifndef CROSS_COMPILE |
| #undef MD_STARTFILE_PREFIX_1 |
| #define MD_STARTFILE_PREFIX_1 "/opt/langtools/lib/pa20_64/" |
| #endif |
| |
| /* hpux11 has the new HP assembler. It's still lousy, but it's a whole lot |
| better than the assembler shipped with older versions of hpux. */ |
| #undef NEW_HP_ASSEMBLER |
| #define NEW_HP_ASSEMBLER 1 |
| |
| #undef ASM_FILE_START |
| #define ASM_FILE_START(FILE) \ |
| do { \ |
| if (TARGET_64BIT) \ |
| fputs("\t.LEVEL 2.0w\n", FILE); \ |
| else if (TARGET_PA_20) \ |
| fputs("\t.LEVEL 2.0\n", FILE); \ |
| else if (TARGET_PA_11) \ |
| fputs("\t.LEVEL 1.1\n", FILE); \ |
| else \ |
| fputs("\t.LEVEL 1.0\n", FILE); \ |
| if (profile_flag)\ |
| fprintf (FILE, "\t.IMPORT _mcount, CODE\n");\ |
| if (write_symbols != NO_DEBUG) \ |
| output_file_directive ((FILE), main_input_filename); \ |
| } while (0) |
| |
| /* It looks like DWARF2 will be the easiest debug format to handle on this |
| platform. */ |
| #define OBJECT_FORMAT_ELF |
| #define DWARF2_DEBUGGING_INFO |
| #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG |
| /* This isn't quite ready yet. I'm seeing it mess up some line |
| tables. For example, we're getting lines starting/ending at |
| impossible addresses. */ |
| #define DWARF2_ASM_LINE_DEBUG_INFO 1 |
| |
| |
| /* The rest of this file is copied from the generic svr4.h. One day we |
| would like to simply include svr4.h instead of copying all these |
| definitions. */ |
| |
| /* 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. */ |
| |
| #define USE_CONST_SECTION 1 |
| |
| #define CONST_SECTION_ASM_OP "\t.section\t.rodata" |
| |
| /* 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 |
| crtstuff.c and other files know this by defining the following symbols. |
| The definitions say how to change sections to the .init and .fini |
| sections. This is the same for all known svr4 assemblers. */ |
| |
| /* For the time being, we aren't using init sections. `P' relocations |
| are currently used for function references. However, P relocations are |
| treated as data references and data references are bound by dld.sl |
| immediately at program startup. This causes an abort due to undefined |
| weak symbols in crtbegin.o (e.g., __register_frame_info). Possibly |
| Q relocations might avoid this problem but the GNU assembler doesn't |
| support them. */ |
| #if 0 |
| #define INIT_SECTION_ASM_OP "\t.section\t.init" |
| #define FINI_SECTION_ASM_OP "\t.section\t.fini" |
| #else |
| #define EH_FRAME_IN_DATA_SECTION 1 |
| |
| #undef ENDFILE_SPEC |
| #define ENDFILE_SPEC "" |
| |
| #undef STARTFILE_SPEC |
| #define STARTFILE_SPEC "%{!shared: \ |
| %{!symbolic: \ |
| %{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}}" |
| #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_const |
| |
| /* 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 |
| |
| |
| #define READONLY_DATA_SECTION() const_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; \ |
| } \ |
| } |
| |
| /* Switch into a generic section. */ |
| #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section |
| |
| #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1) |
| #define UNIQUE_SECTION(DECL,RELOC) \ |
| do { \ |
| int len; \ |
| char *string; \ |
| const char *prefix, \ |
| *const name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL));\ |
| \ |
| if (! DECL_ONE_ONLY (DECL)) \ |
| { \ |
| prefix = "."; \ |
| if (TREE_CODE (DECL) == FUNCTION_DECL) \ |
| prefix = ".text."; \ |
| else if (DECL_READONLY_SECTION (DECL, RELOC)) \ |
| prefix = ".rodata."; \ |
| else \ |
| prefix = ".data."; \ |
| } \ |
| else if (TREE_CODE (DECL) == FUNCTION_DECL) \ |
| prefix = ".gnu.linkonce.t."; \ |
| else if (DECL_READONLY_SECTION (DECL, RELOC)) \ |
| prefix = ".gnu.linkonce.r."; \ |
| else \ |
| prefix = ".gnu.linkonce.d."; \ |
| \ |
| len = strlen (name) + strlen (prefix); \ |
| string = alloca (len + 1); \ |
| sprintf (string, "%s%s", prefix, name); \ |
| \ |
| DECL_SECTION_NAME (DECL) = build_string (len, string); \ |
| } 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 |
| different pseudo-op names for these, they may be overridden in the |
| file which includes this one. */ |
| |
| #define TYPE_ASM_OP "\t.type\t" |
| #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) \ |
| do { fputs ("\t.weak\t", 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 |
| expect various different forms for this operand. The one given here |
| is just a default. You may need to override it in your machine- |
| specific tm.h file (depending upon the particulars of your assembler). */ |
| |
| #define TYPE_OPERAND_FMT "@%s" |
| |
| /* Write the extra assembler code needed to declare a function's result. |
| Most svr4 assemblers don't require any special declaration of the |
| result value, but there are exceptions. */ |
| |
| #ifndef ASM_DECLARE_RESULT |
| #define ASM_DECLARE_RESULT(FILE, RESULT) |
| #endif |