| /* Definitions of target machine for GNU compiler, for HPs using the |
| 64bit runtime model. |
| Copyright (C) 1999, 2000 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 "/opt/langtools/bin" |
| #endif |
| |
| /* Under hpux11 the normal location of the various *crt*.o files is the |
| /usr/ccs/lib directory. */ |
| |
| #ifndef CROSS_COMPILE |
| #undef MD_STARTFILE_PREFIX |
| #define MD_STARTFILE_PREFIX "/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. */ |
| #define NEW_HP_ASSEMBLER |
| |
| /* The default sizes for basic datatypes provided by GCC are not |
| correct for the PA64 runtime architecture. |
| |
| In PA64, basic types have the following sizes |
| |
| char 1 byte |
| short 2 bytes |
| int 4 bytes |
| long 8 bytes |
| long long 8 bytes |
| pointer 8 bytes |
| float 4 bytes |
| double 8 bytes |
| long double 16 bytes |
| size_t 8 bytes |
| ptrdiff_t 8 bytes |
| wchar 4 bytes |
| |
| Make GCC agree with types.h. */ |
| #undef SIZE_TYPE |
| #undef PTRDIFF_TYPE |
| |
| #define SIZE_TYPE "long unsigned int" |
| #define PTRDIFF_TYPE "long int" |
| |
| /* If it is not listed here, then the default selected by GCC is OK. */ |
| #define SHORT_TYPE_SIZE 16 |
| #define INT_TYPE_SIZE 32 |
| #define MAX_LONG_TYPE_SIZE 64 |
| #define LONG_TYPE_SIZE 64 |
| #define LONG_LONG_TYPE_SIZE 64 |
| #define FLOAT_TYPE_SIZE 32 |
| #define DOUBLE_TYPE_SIZE 64 |
| /* This should be 128, but until we work out the ABI for the 128bit |
| FP codes supplied by HP we'll keep it at 64 bits. */ |
| #undef LONG_DOUBLE_TYPE_SIZE |
| #define LONG_DOUBLE_TYPE_SIZE 64 |
| #define MAX_WCHAR_TYPE_SIZE 32 |
| |
| #undef ASM_FILE_START |
| #define ASM_FILE_START(FILE) \ |
| do { \ |
| if (TARGET_64BIT) \ |
| fputs("\t.LEVEL 2.0w\n", FILE); \ |
| else if (TARGET_PA_11) \ |
| 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) |
| |
| /* Temporary until we figure out what to do with those *(&@$ 32bit |
| relocs which appear in stabs. */ |
| #undef DBX_DEBUGGING_INFO |
| |
| /* We want the compiler to select a suitable secondary memory location. |
| ?!? This may not work reliably. Keep an eye out for problems. */ |
| #undef SECONDARY_MEMORY_NEEDED_RTX |
| |
| |
| /* ?!? This needs to be made compile-time selectable. |
| |
| The PA64 runtime model has arguments that grow to higher addresses |
| (like most other targets). The older runtime model has arguments |
| that grow to lower addresses. What fun. */ |
| #undef ARGS_GROW_DOWNWARD |
| #undef ARG_POINTER_REGNUM |
| #define ARG_POINTER_REGNUM 29 |
| #undef STATIC_CHAIN_REGNUM |
| #define STATIC_CHAIN_REGNUM 31 |
| |
| /* This is not needed for correct operation in 32bit mode, and since |
| older versions of gas and the hpux assembler do not accept .dword |
| we put this here instead of the more logical location, pa.h. */ |
| #define ASM_OUTPUT_DOUBLE_INT(FILE,VALUE) \ |
| { fputs ("\t.dword ", FILE); \ |
| if (function_label_operand (VALUE, VOIDmode)) \ |
| fputs ("P%", FILE); \ |
| output_addr_const (FILE, (VALUE)); \ |
| fputs ("\n", FILE);} |
| |
| /* 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_FORMAT 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 |
| |
| |
| /* Nonzero if we do not know how to pass TYPE solely in registers. */ |
| #define MUST_PASS_IN_STACK(MODE,TYPE) \ |
| ((TYPE) != 0 \ |
| && (TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST \ |
| || TREE_ADDRESSABLE (TYPE))) |
| |
| /* 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" |
| |
| /* Define the pseudo-ops used to switch to the .ctors and .dtors sections. |
| |
| 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.) */ |
| |
| #define CTORS_SECTION_ASM_OP "\t.section\t.ctors,\"aw\"" |
| #define DTORS_SECTION_ASM_OP "\t.section\t.dtors,\"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 |
| 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. */ |
| #if 0 |
| #define INIT_SECTION_ASM_OP "\t.section\t.init" |
| #define FINI_SECTION_ASM_OP "\t.section\t.fini" |
| #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, 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 |
| |
| #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; \ |
| } \ |
| } |
| |
| #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. |
| |
| 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. |
| |
| If the section has already been defined, we must not |
| emit the attributes here. The SVR4 assembler does not |
| recognize section redefinitions. |
| If DECL is NULL, no attributes are emitted. */ |
| |
| #define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME, RELOC) \ |
| do \ |
| { \ |
| static htab_t htab; \ |
| \ |
| struct section_info \ |
| { \ |
| enum sect_enum {SECT_RW, SECT_RO, SECT_EXEC} type; \ |
| }; \ |
| \ |
| struct section_info *s; \ |
| const char *mode; \ |
| enum sect_enum type; \ |
| PTR* slot; \ |
| \ |
| /* The names we put in the hashtable will always be the unique \ |
| versions gived to us by the stringtable, so we can just use \ |
| their addresses as the keys. */ \ |
| if (!htab) \ |
| htab = htab_create (31, \ |
| htab_hash_pointer, \ |
| htab_eq_pointer, \ |
| NULL); \ |
| \ |
| if (DECL && TREE_CODE (DECL) == FUNCTION_DECL) \ |
| type = SECT_EXEC, mode = "ax"; \ |
| else if (DECL && DECL_READONLY_SECTION (DECL, RELOC)) \ |
| type = SECT_RO, mode = "a"; \ |
| else \ |
| type = SECT_RW, mode = "aw"; \ |
| \ |
| \ |
| /* See if we already have an entry for this section. */ \ |
| slot = htab_find_slot (htab, NAME, INSERT); \ |
| if (!*slot) \ |
| { \ |
| s = (struct section_info *) xmalloc (sizeof (* s)); \ |
| s->type = type; \ |
| *slot = s; \ |
| fprintf (FILE, "\t.section\t%s,\"%s\",@progbits\n", \ |
| NAME, mode); \ |
| } \ |
| else \ |
| { \ |
| s = (struct section_info *) *slot; \ |
| if (DECL && s->type != type) \ |
| error_with_decl (DECL, \ |
| "%s causes a section type conflict"); \ |
| \ |
| fprintf (FILE, "\t.section\t%s\n", NAME); \ |
| } \ |
| } \ |
| while (0) |
| |
| #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1) |
| #define UNIQUE_SECTION_P(DECL) (DECL_ONE_ONLY (DECL)) |
| #define UNIQUE_SECTION(DECL,RELOC) \ |
| do { \ |
| int len; \ |
| char *name, *string, *prefix; \ |
| \ |
| 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 INT_ASM_OP "\t.dword\t" |
| /* 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, "%sP%%", INT_ASM_OP); \ |
| assemble_name (FILE, NAME); \ |
| fprintf (FILE, "\n"); \ |
| } while (0) |
| |
| /* 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, "%sP%%", INT_ASM_OP); \ |
| assemble_name (FILE, NAME); \ |
| fprintf (FILE, "\n"); \ |
| } while (0) |
| |
| /* ??? For the time being, we aren't using .ctors/.dtors sections. */ |
| #undef ASM_OUTPUT_DESTRUCTOR |
| #undef ASM_OUTPUT_CONSTRUCTOR |
| |
| /* 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 |
