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Diffstat (limited to 'gcc/config/i386/cygwin.h')
| -rw-r--r-- | gcc/config/i386/cygwin.h | 504 |
1 files changed, 504 insertions, 0 deletions
diff --git a/gcc/config/i386/cygwin.h b/gcc/config/i386/cygwin.h new file mode 100644 index 00000000000..af0b25e5917 --- /dev/null +++ b/gcc/config/i386/cygwin.h @@ -0,0 +1,504 @@ +/* Operating system specific defines to be used when targeting GCC for + hosting on Windows NT 3.x, using a Unix style C library and tools, + as distinct from winnt.h, which is used to build GCC for use with a + windows style library and tool set and uses the Microsoft tools. + Copyright (C) 1995, 1996, 1997, 1998 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. */ + +#define YES_UNDERSCORES + +#define DBX_DEBUGGING_INFO +#define SDB_DEBUGGING_INFO +#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG + +#include "i386/gas.h" +#include "dbxcoff.h" + +/* Augment TARGET_SWITCHES with the cygwin/no-cygwin options. */ +#define MASK_WIN32 0x40000000 /* Use -lming32 interface */ +#define MASK_CYGWIN 0x20000000 /* Use -lcygwin interface */ +#define MASK_WINDOWS 0x10000000 /* Use windows interface */ +#define MASK_DLL 0x08000000 /* Use dll interface */ +#define MASK_NOP_FUN_DLLIMPORT 0x20000 /* Ignore dllimport for functions */ + +#define TARGET_WIN32 (target_flags & MASK_WIN32) +#define TARGET_CYGWIN (target_flags & MASK_CYGWIN) +#define TARGET_WINDOWS (target_flags & MASK_WINDOWS) +#define TARGET_DLL (target_flags & MASK_DLL) +#define TARGET_NOP_FUN_DLLIMPORT (target_flags & MASK_NOP_FUN_DLLIMPORT) + +#undef SUBTARGET_SWITCHES +#define SUBTARGET_SWITCHES \ +{ "no-cygwin", MASK_WIN32 }, \ +{ "cygwin", MASK_CYGWIN }, \ +{ "windows", MASK_WINDOWS }, \ +{ "dll", MASK_DLL }, \ +{ "nop-fun-dllimport", MASK_NOP_FUN_DLLIMPORT }, \ +{ "no-nop-fun-dllimport", MASK_NOP_FUN_DLLIMPORT }, + + +/* Support the __declspec keyword by turning them into attributes. + We currently only support: dllimport and dllexport. + Note that the current way we do this may result in a collision with + predefined attributes later on. This can be solved by using one attribute, + say __declspec__, and passing args to it. The problem with that approach + is that args are not accumulated: each new appearance would clobber any + existing args. */ + +#ifdef CPP_PREDEFINES +#undef CPP_PREDEFINES +#endif + +#define CPP_PREDEFINES "-Di386 -D_WIN32 \ + -DWINNT -D_X86_=1 -D__STDC__=1\ + -D__stdcall=__attribute__((__stdcall__)) \ + -D__cdecl=__attribute__((__cdecl__)) \ + -D__declspec(x)=__attribute__((x)) \ + -Asystem(winnt) -Acpu(i386) -Amachine(i386)" + +/* Normally, -lgcc is not needed since everything in it is in the DLL, but we + want to allow things to be added to it when installing new versions of + GCC without making a new CYGWIN.DLL, so we leave it. Profiling is handled + by calling the init function from the prologue. */ + +#undef STARTFILE_SPEC +#define STARTFILE_SPEC "%{mdll: %{!mno-cygwin:dllcrt0%O%s} \ + %{mno-cygwin:dllcrt1%O%s}} \ + %{!mdll: %{!mno-cygwin:crt0%O%s} \ + %{mno-cygwin:crt1%O%s} %{pg:gcrt0%O%s}}" + +#undef CPP_SPEC +#define CPP_SPEC "-remap %(cpp_cpu) %{posix:-D_POSIX_SOURCE} \ + %{!mno-cygwin:-D__CYGWIN32__ -D__CYGWIN__} \ + %{mno-cygwin:-iwithprefixbefore include/mingw32 -D__MINGW32__=0.2}" + +/* We have to dynamic link to get to the system DLLs. All of libc, libm and + the Unix stuff is in cygwin.dll. The import library is called + 'libcygwin.a'. For Windows applications, include more libraries, but + always include kernel32. We'd like to specific subsystem windows to + ld, but that doesn't work just yet. */ + +#undef LIB_SPEC +#define LIB_SPEC "%{pg:-lgmon} \ + %{!mno-cygwin:-lcygwin} \ + %{mno-cygwin:-lmingw32 -lmoldname -lcrtdll} \ + %{mwindows:-luser32 -lgdi32 -lcomdlg32} \ + -lkernel32 -ladvapi32 -lshell32" + +#define LINK_SPEC "%{mwindows:--subsystem windows} \ + %{mdll:--dll -e _DllMainCRTStartup@12}" + + +#define SIZE_TYPE "unsigned int" +#define PTRDIFF_TYPE "int" +#define WCHAR_UNSIGNED 1 +#define WCHAR_TYPE_SIZE 16 +#define WCHAR_TYPE "short unsigned int" + +#define HAVE_ATEXIT 1 + + +/* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop). */ +#define HANDLE_PRAGMA_PACK_PUSH_POP 1 + +/* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS + is a valid machine specific attribute for DECL. + The attributes in ATTRIBUTES have previously been assigned to DECL. */ +extern int i386_pe_valid_decl_attribute_p (); + +#undef VALID_MACHINE_DECL_ATTRIBUTE +#define VALID_MACHINE_DECL_ATTRIBUTE(DECL, ATTRIBUTES, IDENTIFIER, ARGS) \ + i386_pe_valid_decl_attribute_p (DECL, ATTRIBUTES, IDENTIFIER, ARGS) + +/* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS + is a valid machine specific attribute for TYPE. + The attributes in ATTRIBUTES have previously been assigned to TYPE. */ + +#undef VALID_MACHINE_TYPE_ATTRIBUTE +#define VALID_MACHINE_TYPE_ATTRIBUTE(TYPE, ATTRIBUTES, IDENTIFIER, ARGS) \ + i386_pe_valid_type_attribute_p (TYPE, ATTRIBUTES, IDENTIFIER, ARGS) +extern int i386_pe_valid_type_attribute_p (); + +extern union tree_node *i386_pe_merge_decl_attributes (); +#define MERGE_MACHINE_DECL_ATTRIBUTES(OLD, NEW) \ + i386_pe_merge_decl_attributes ((OLD), (NEW)) + +/* Used to implement dllexport overriding dllimport semantics. It's also used + to handle vtables - the first pass won't do anything because + DECL_CONTEXT (DECL) will be 0 so i386_pe_dll{ex,im}port_p will return 0. + It's also used to handle dllimport override semantics. */ +#if 0 +#define REDO_SECTION_INFO_P(DECL) \ + ((DECL_MACHINE_ATTRIBUTES (DECL) != NULL_TREE) \ + || (TREE_CODE (DECL) == VAR_DECL && DECL_VIRTUAL_P (DECL))) +#else +#define REDO_SECTION_INFO_P(DECL) 1 +#endif + + +#undef EXTRA_SECTIONS +#define EXTRA_SECTIONS in_ctor, in_dtor, in_drectve + +#undef EXTRA_SECTION_FUNCTIONS +#define EXTRA_SECTION_FUNCTIONS \ + CTOR_SECTION_FUNCTION \ + DTOR_SECTION_FUNCTION \ + DRECTVE_SECTION_FUNCTION \ + SWITCH_TO_SECTION_FUNCTION + +#define CTOR_SECTION_FUNCTION \ +void \ +ctor_section () \ +{ \ + if (in_section != in_ctor) \ + { \ + fprintf (asm_out_file, "\t.section .ctor\n"); \ + in_section = in_ctor; \ + } \ +} + +#define DTOR_SECTION_FUNCTION \ +void \ +dtor_section () \ +{ \ + if (in_section != in_dtor) \ + { \ + fprintf (asm_out_file, "\t.section .dtor\n"); \ + in_section = in_dtor; \ + } \ +} + +#define DRECTVE_SECTION_FUNCTION \ +void \ +drectve_section () \ +{ \ + if (in_section != in_drectve) \ + { \ + fprintf (asm_out_file, "%s\n", "\t.section .drectve\n"); \ + in_section = in_drectve; \ + } \ +} + +/* Switch to SECTION (an `enum in_section'). + + ??? This facility should be provided by GCC proper. + The problem is that we want to temporarily switch sections in + ASM_DECLARE_OBJECT_NAME and then switch back to the original section + afterwards. */ +#define SWITCH_TO_SECTION_FUNCTION \ +void \ +switch_to_section (section, decl) \ + enum in_section section; \ + tree decl; \ +{ \ + switch (section) \ + { \ + case in_text: text_section (); break; \ + case in_data: data_section (); break; \ + case in_named: named_section (decl, NULL, 0); break; \ + case in_ctor: ctor_section (); break; \ + case in_dtor: dtor_section (); break; \ + case in_drectve: drectve_section (); break; \ + default: abort (); break; \ + } \ +} + +#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \ + do { \ + ctor_section (); \ + fprintf (FILE, "%s\t", ASM_LONG); \ + assemble_name (FILE, NAME); \ + fprintf (FILE, "\n"); \ + } while (0) + +#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \ + do { \ + dtor_section (); \ + fprintf (FILE, "%s\t", ASM_LONG); \ + assemble_name (FILE, NAME); \ + fprintf (FILE, "\n"); \ + } while (0) + +/* Define this macro if references to a symbol must be treated + differently depending on something about the variable or + function named by the symbol (such as what section it is in). + + On i386 running Windows NT, modify the assembler name with a suffix + consisting of an atsign (@) followed by string of digits that represents + the number of bytes of arguments passed to the function, if it has the + attribute STDCALL. + + In addition, we must mark dll symbols specially. Definitions of + dllexport'd objects install some info in the .drectve section. + References to dllimport'd objects are fetched indirectly via + _imp__. If both are declared, dllexport overrides. This is also + needed to implement one-only vtables: they go into their own + section and we need to set DECL_SECTION_NAME so we do that here. + Note that we can be called twice on the same decl. */ + +extern void i386_pe_encode_section_info (); + +#ifdef ENCODE_SECTION_INFO +#undef ENCODE_SECTION_INFO +#endif +#define ENCODE_SECTION_INFO(DECL) i386_pe_encode_section_info (DECL) + +/* Utility used only in this file. */ +#define I386_PE_STRIP_ENCODING(SYM_NAME) \ + ((SYM_NAME) + ((SYM_NAME)[0] == '@' ? 3 : 0)) + +/* This macro gets just the user-specified name + out of the string in a SYMBOL_REF. Discard + trailing @[NUM] encoded by ENCODE_SECTION_INFO. */ +#undef STRIP_NAME_ENCODING +#define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME) \ +do { \ + char *_p; \ + char *_name = I386_PE_STRIP_ENCODING (SYMBOL_NAME); \ + for (_p = _name; *_p && *_p != '@'; ++_p) \ + ; \ + if (*_p == '@') \ + { \ + int _len = _p - _name; \ + (VAR) = (char *) alloca (_len + 1); \ + strncpy ((VAR), _name, _len); \ + (VAR)[_len] = '\0'; \ + } \ + else \ + (VAR) = _name; \ +} while (0) + + +/* Output a reference to a label. */ +#undef ASM_OUTPUT_LABELREF +#define ASM_OUTPUT_LABELREF(STREAM, NAME) \ + fprintf (STREAM, "%s%s", USER_LABEL_PREFIX, \ + I386_PE_STRIP_ENCODING (NAME)) \ + +/* Output a common block. */ +#undef ASM_OUTPUT_COMMON +#define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \ +do { \ + if (i386_pe_dllexport_name_p (NAME)) \ + { \ + drectve_section (); \ + fprintf ((STREAM), "\t.ascii \" -export:%s\"\n", \ + I386_PE_STRIP_ENCODING (NAME)); \ + } \ + if (! i386_pe_dllimport_name_p (NAME)) \ + { \ + fprintf ((STREAM), "\t.comm\t"); \ + assemble_name ((STREAM), (NAME)); \ + fprintf ((STREAM), ", %d\t%s %d\n", \ + (ROUNDED), ASM_COMMENT_START, (SIZE)); \ + } \ +} while (0) + +/* Output the label for an initialized variable. */ +#undef ASM_DECLARE_OBJECT_NAME +#define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \ +do { \ + if (i386_pe_dllexport_name_p (NAME)) \ + { \ + enum in_section save_section = in_section; \ + drectve_section (); \ + fprintf ((STREAM), "\t.ascii \" -export:%s\"\n", \ + I386_PE_STRIP_ENCODING (NAME)); \ + switch_to_section (save_section, (DECL)); \ + } \ + ASM_OUTPUT_LABEL ((STREAM), (NAME)); \ +} while (0) + + +/* Emit code to check the stack when allocating more that 4000 + bytes in one go. */ + +#define CHECK_STACK_LIMIT 4000 + +/* By default, target has a 80387, uses IEEE compatible arithmetic, + and returns float values in the 387 and needs stack probes */ +#undef TARGET_DEFAULT + +#define TARGET_DEFAULT \ + (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_STACK_PROBE) + +/* This is how to output an assembler line + that says to advance the location counter + to a multiple of 2**LOG bytes. */ + +#undef ASM_OUTPUT_ALIGN +#define ASM_OUTPUT_ALIGN(FILE,LOG) \ + if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG)) + +/* Define this macro if in some cases global symbols from one translation + unit may not be bound to undefined symbols in another translation unit + without user intervention. For instance, under Microsoft Windows + symbols must be explicitly imported from shared libraries (DLLs). */ +#define MULTIPLE_SYMBOL_SPACES + +#define UNIQUE_SECTION_P(DECL) DECL_ONE_ONLY (DECL) +extern void i386_pe_unique_section (); +#define UNIQUE_SECTION(DECL,RELOC) i386_pe_unique_section (DECL, RELOC) + +#define SUPPORTS_ONE_ONLY 1 + +/* A C statement to output something to the assembler file to switch to section + NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or + NULL_TREE. Some target formats do not support arbitrary sections. Do not + define this macro in such cases. */ +#undef ASM_OUTPUT_SECTION_NAME +#define ASM_OUTPUT_SECTION_NAME(STREAM, DECL, NAME, RELOC) \ +do { \ + static struct section_info \ + { \ + struct section_info *next; \ + char *name; \ + enum sect_enum {SECT_RW, SECT_RO, SECT_EXEC} type; \ + } *sections; \ + struct section_info *s; \ + char *mode; \ + enum sect_enum type; \ + \ + for (s = sections; s; s = s->next) \ + if (!strcmp (NAME, s->name)) \ + break; \ + \ + if (DECL && TREE_CODE (DECL) == FUNCTION_DECL) \ + type = SECT_EXEC, mode = "x"; \ + else if (DECL && DECL_READONLY_SECTION (DECL, RELOC)) \ + type = SECT_RO, mode = ""; \ + else \ + type = SECT_RW, mode = "w"; \ + \ + if (s == 0) \ + { \ + s = (struct section_info *) xmalloc (sizeof (struct section_info)); \ + s->name = xmalloc ((strlen (NAME) + 1) * sizeof (*NAME)); \ + strcpy (s->name, NAME); \ + s->type = type; \ + s->next = sections; \ + sections = s; \ + fprintf (STREAM, ".section\t%s,\"%s\"\n", NAME, mode); \ + /* Functions may have been compiled at various levels of \ + optimization so we can't use `same_size' here. Instead, \ + have the linker pick one. */ \ + if ((DECL) && DECL_ONE_ONLY (DECL)) \ + fprintf (STREAM, "\t.linkonce %s\n", \ + TREE_CODE (DECL) == FUNCTION_DECL \ + ? "discard" : "same_size"); \ + } \ + else \ + { \ + fprintf (STREAM, ".section\t%s,\"%s\"\n", NAME, mode); \ + } \ +} while (0) + +/* Write the extra assembler code needed to declare a function + properly. If we are generating SDB debugging information, this + will happen automatically, so we only need to handle other cases. */ +#undef ASM_DECLARE_FUNCTION_NAME +#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ + do \ + { \ + if (i386_pe_dllexport_name_p (NAME)) \ + { \ + drectve_section (); \ + fprintf ((FILE), "\t.ascii \" -export:%s\"\n", \ + I386_PE_STRIP_ENCODING (NAME)); \ + function_section (DECL); \ + } \ + if (write_symbols != SDB_DEBUG) \ + i386_pe_declare_function_type (FILE, NAME, TREE_PUBLIC (DECL)); \ + ASM_OUTPUT_LABEL (FILE, NAME); \ + } \ + while (0) + +/* Add an external function to the list of functions to be declared at + the end of the file. */ +#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \ + do \ + { \ + if (TREE_CODE (DECL) == FUNCTION_DECL) \ + i386_pe_record_external_function (NAME); \ + } \ + while (0) + +/* Declare the type properly for any external libcall. */ +#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \ + i386_pe_declare_function_type (FILE, XSTR (FUN, 0), 1) + +/* Output function declarations at the end of the file. */ +#define ASM_FILE_END(FILE) \ + i386_pe_asm_file_end (FILE) + +#undef ASM_COMMENT_START +#define ASM_COMMENT_START " #" + +/* DWARF2 Unwinding doesn't work with exception handling yet. */ +#define DWARF2_UNWIND_INFO 0 + +/* Don't assume anything about the header files. */ +#define NO_IMPLICIT_EXTERN_C + +#define SUBTARGET_PROLOGUE \ + if (profile_flag \ + && strcmp (IDENTIFIER_POINTER (DECL_NAME (current_function_decl)),\ + "main") == 0) \ + { \ + rtx xops[1]; \ + xops[0] = gen_rtx_MEM (FUNCTION_MODE, \ + gen_rtx (SYMBOL_REF, Pmode, "_monstartup")); \ + if (do_rtl) \ + emit_call_insn (gen_rtx (CALL, VOIDmode, xops[0], const0_rtx)); \ + else \ + output_asm_insn (AS1 (call,%P1), xops); \ + } + +/* External function declarations. */ + +#ifndef PROTO +#if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__) +#define PROTO(ARGS) ARGS +#else +#define PROTO(ARGS) () +#endif +#endif + +#ifdef BUFSIZ /* stdio.h has been included, ok to use FILE * */ +#define STDIO_PROTO(ARGS) PROTO(ARGS) +#else +#define STDIO_PROTO(ARGS) () +#endif + +extern void i386_pe_record_external_function PROTO((char *)); +extern void i386_pe_declare_function_type STDIO_PROTO((FILE *, char *, int)); +extern void i386_pe_asm_file_end STDIO_PROTO((FILE *)); + +/* For Win32 ABI compatibility */ +#undef DEFAULT_PCC_STRUCT_RETURN +#define DEFAULT_PCC_STRUCT_RETURN 0 + +/* No data type wants to be aligned rounder than this. */ +#undef BIGGEST_ALIGNMENT +#define BIGGEST_ALIGNMENT 128 + +/* A bitfield declared as `int' forces `int' alignment for the struct. */ +#undef PCC_BITFIELDS_TYPE_MATTERS +#define PCC_BITFIELDS_TYPE_MATTERS 0 + |
