| /* Target definitions for GNU compiler for Intel 80386 running Interix |
| Parts Copyright (C) 1991, 1999, 2000 Free Software Foundation, Inc. |
| |
| Parts: |
| by Douglas B. Rupp (drupp@cs.washington.edu). |
| by Ron Guilmette (rfg@netcom.com). |
| by Donn Terry (donn@softway.com). |
| by Mumit Khan (khan@xraylith.wisc.edu). |
| |
| 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 |
| |
| /* YES_UNDERSCORES must precede gas.h */ |
| #include <i386/gas.h> |
| /* The rest must follow. */ |
| |
| #define DBX_DEBUGGING_INFO |
| #define SDB_DEBUGGING_INFO |
| #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG |
| |
| #define HANDLE_SYSV_PRAGMA |
| #undef HANDLE_PRAGMA_WEAK /* until the link format can handle it */ |
| |
| /* By default, target has a 80387, uses IEEE compatible arithmetic, |
| and returns float values in the 387 and needs stack probes |
| We also align doubles to 64-bits for MSVC default compatibility */ |
| #undef TARGET_SUBTARGET_DEFAULT |
| #define TARGET_SUBTARGET_DEFAULT \ |
| (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_STACK_PROBE | \ |
| MASK_ALIGN_DOUBLE) |
| |
| #undef TARGET_CPU_DEFAULT |
| #define TARGET_CPU_DEFAULT 2 /* 486 */ |
| |
| #define WCHAR_UNSIGNED 1 |
| #define WCHAR_TYPE_SIZE 16 |
| #define WCHAR_TYPE "short unsigned int" |
| |
| /* WinNT (and thus Interix) use unsigned int */ |
| #define SIZE_TYPE "unsigned int" |
| |
| #define ASM_LOAD_ADDR(loc, reg) " leal " #loc "," #reg "\n" |
| |
| /* cpp handles __STDC__ */ |
| #undef CPP_PREDEFINES |
| #define CPP_PREDEFINES " \ |
| -D__INTERIX \ |
| -D__OPENNT \ |
| -D_M_IX86=300 -D_X86_=1 \ |
| -D__stdcall=__attribute__((__stdcall__)) \ |
| -D__cdecl=__attribute__((__cdecl__)) \ |
| -Asystem=unix -Asystem=interix" |
| |
| #undef CPP_SPEC |
| /* Write out the correct language type definition for the header files. |
| Unless we have assembler language, write out the symbols for C. |
| cpp_cpu is an Intel specific variant. See i386.h |
| mieee is an Alpha specific variant. Cross polination a bad idea. |
| */ |
| #define CPP_SPEC "\ |
| %{!.S: -D__LANGUAGE_C__ -D__LANGUAGE_C %{!ansi:-DLANGUAGE_C}} \ |
| %{.S: -D__LANGUAGE_ASSEMBLY__ -D__LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \ |
| %{.cc: -D__LANGUAGE_C_PLUS_PLUS__ -D__LANGUAGE_C_PLUS_PLUS -D__cplusplus} \ |
| %{.cxx: -D__LANGUAGE_C_PLUS_PLUS__ -D__LANGUAGE_C_PLUS_PLUS -D__cplusplus} \ |
| %{.C: -D__LANGUAGE_C_PLUS_PLUS__ -D__LANGUAGE_C_PLUS_PLUS -D__cplusplus} \ |
| %{.m: -D__LANGUAGE_OBJECTIVE_C__ -D__LANGUAGE_OBJECTIVE_C} \ |
| -remap \ |
| %(cpp_cpu) \ |
| %{posix:-D_POSIX_SOURCE} \ |
| -isystem %$INTERIX_ROOT/usr/include" |
| |
| #undef TARGET_VERSION |
| #define TARGET_VERSION fprintf (stderr, " (i386 Interix)"); |
| |
| /* The global __fltused is necessary to cause the printf/scanf routines |
| for outputting/inputting floating point numbers to be loaded. Since this |
| is kind of hard to detect, we just do it all the time. */ |
| |
| #ifdef ASM_FILE_START |
| #undef ASM_FILE_START |
| #endif |
| #define ASM_FILE_START(FILE) \ |
| do { fprintf (FILE, "\t.file\t"); \ |
| output_quoted_string (FILE, dump_base_name); \ |
| fprintf (FILE, "\n"); \ |
| fprintf (FILE, ".global\t__fltused\n"); \ |
| } while (0) |
| |
| /* A table of bytes codes used by the ASM_OUTPUT_ASCII and |
| ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table |
| corresponds to a particular byte value [0..255]. For any |
| given byte value, if the value in the corresponding table |
| position is zero, the given character can be output directly. |
| If the table value is 1, the byte must be output as a \ooo |
| octal escape. If the tables value is anything else, then the |
| byte value should be output as a \ followed by the value |
| in the table. Note that we can use standard UN*X escape |
| sequences for many control characters, but we don't use |
| \a to represent BEL because some svr4 assemblers (e.g. on |
| 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 \ |
| "\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\ |
| \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\1\ |
| \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\ |
| \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\ |
| \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\ |
| \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1" |
| |
| /* Some svr4 assemblers have a limit on the number of characters which |
| can appear in the operand of a .string directive. If your assembler |
| has such a limitation, you should define STRING_LIMIT to reflect that |
| limit. Note that at least some svr4 assemblers have a limit on the |
| actual number of bytes in the double-quoted string, and that they |
| count each character in an escape sequence as one byte. Thus, an |
| 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. |
| */ |
| |
| #define STRING_LIMIT ((unsigned) 256) |
| |
| #define STRING_ASM_OP "\t.string\t" |
| |
| /* The routine used to output NUL terminated strings. We use a special |
| version of this for most svr4 targets because doing so makes the |
| generated assembly code more compact (and thus faster to assemble) |
| as well as more readable, especially for targets like the i386 |
| (where the only alternative is to output character sequences as |
| comma separated lists of numbers). */ |
| |
| #define ASM_OUTPUT_LIMITED_STRING(FILE, STR) \ |
| do \ |
| { \ |
| register const unsigned char *_limited_str = \ |
| (const unsigned char *) (STR); \ |
| register unsigned ch; \ |
| fprintf ((FILE), "%s\"", STRING_ASM_OP); \ |
| for (; (ch = *_limited_str); _limited_str++) \ |
| { \ |
| register int escape = ESCAPES[ch]; \ |
| switch (escape) \ |
| { \ |
| case 0: \ |
| putc (ch, (FILE)); \ |
| break; \ |
| case 1: \ |
| fprintf ((FILE), "\\%03o", ch); \ |
| break; \ |
| default: \ |
| putc ('\\', (FILE)); \ |
| putc (escape, (FILE)); \ |
| break; \ |
| } \ |
| } \ |
| fprintf ((FILE), "\"\n"); \ |
| } \ |
| while (0) |
| |
| /* The routine used to output sequences of byte values. We use a special |
| version of this for most svr4 targets because doing so makes the |
| generated assembly code more compact (and thus faster to assemble) |
| as well as more readable. Note that if we find subparts of the |
| character sequence which end with NUL (and which are shorter than |
| STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */ |
| |
| #undef ASM_OUTPUT_ASCII |
| #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \ |
| do \ |
| { \ |
| register const unsigned char *_ascii_bytes = \ |
| (const unsigned char *) (STR); \ |
| register const unsigned char *limit = _ascii_bytes + (LENGTH); \ |
| register unsigned bytes_in_chunk = 0; \ |
| for (; _ascii_bytes < limit; _ascii_bytes++) \ |
| { \ |
| register const unsigned char *p; \ |
| if (bytes_in_chunk >= 64) \ |
| { \ |
| fputc ('\n', (FILE)); \ |
| bytes_in_chunk = 0; \ |
| } \ |
| for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \ |
| continue; \ |
| if (p < limit && (p - _ascii_bytes) <= (long) STRING_LIMIT) \ |
| { \ |
| if (bytes_in_chunk > 0) \ |
| { \ |
| fputc ('\n', (FILE)); \ |
| bytes_in_chunk = 0; \ |
| } \ |
| ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \ |
| _ascii_bytes = p; \ |
| } \ |
| else \ |
| { \ |
| if (bytes_in_chunk == 0) \ |
| fprintf ((FILE), "\t.byte\t"); \ |
| else \ |
| fputc (',', (FILE)); \ |
| fprintf ((FILE), "0x%02x", *_ascii_bytes); \ |
| bytes_in_chunk += 5; \ |
| } \ |
| } \ |
| if (bytes_in_chunk > 0) \ |
| fprintf ((FILE), "\n"); \ |
| } \ |
| while (0) |
| |
| /* Emit code to check the stack when allocating more that 4000 |
| bytes in one go. */ |
| |
| #define CHECK_STACK_LIMIT 0x1000 |
| |
| /* the following are OSF linker (not gld) specific... we don't want them */ |
| #undef HAS_INIT_SECTION |
| #undef LD_INIT_SWITCH |
| #undef LD_FINI_SWITCH |
| |
| |
| /* 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.rdata,\"r\"" |
| |
| /* 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 |
| |
| #undef READONLY_DATA_SECTION |
| #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; \ |
| } \ |
| } |
| |
| /* The MS compilers take alignment as a number of bytes, so we do as well */ |
| #undef ASM_OUTPUT_ALIGN |
| #define ASM_OUTPUT_ALIGN(FILE,LOG) \ |
| if ((LOG)!=0) fprintf ((FILE), "\t.balign %d\n", 1<<(LOG)) |
| |
| /* The linker will take care of this, and having them causes problems with |
| ld -r (specifically -rU). */ |
| #define CTOR_LISTS_DEFINED_EXTERNALLY 1 |
| |
| #define SET_ASM_OP "\t.set\t" |
| /* Output a definition (implements alias) */ |
| #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \ |
| do \ |
| { \ |
| fprintf ((FILE), "%s", SET_ASM_OP); \ |
| assemble_name (FILE, LABEL1); \ |
| fprintf (FILE, ","); \ |
| assemble_name (FILE, LABEL2); \ |
| fprintf (FILE, "\n"); \ |
| } \ |
| while (0) |
| |
| #define HOST_PTR_PRINTF "%p" |
| #define HOST_PTR_AS_INT unsigned long |
| |
| #define PCC_BITFIELD_TYPE_MATTERS 1 |
| #define PCC_BITFIELD_TYPE_TEST TYPE_NATIVE(rec) |
| #define GROUP_BITFIELDS_BY_ALIGN TYPE_NATIVE(rec) |
| |
| /* The following two flags are usually "off" for i386, because some non-gnu |
| tools (for the i386) don't handle them. However, we don't have that |
| problem, so.... */ |
| |
| /* Forward references to tags are allowed. */ |
| #define SDB_ALLOW_FORWARD_REFERENCES |
| |
| /* Unknown tags are also allowed. */ |
| #define SDB_ALLOW_UNKNOWN_REFERENCES |
| |
| /* The integer half of this list needs to be constant. However, there's |
| a lot of disagreement about what the floating point adjustments should |
| be. We pick one that works with gdb. (The underlying problem is |
| what to do about the segment registers. Since we have access to them |
| from /proc, we'll allow them to be accessed in gdb, even tho the |
| gcc compiler can't generate them. (There's some evidence that |
| MSVC does, but possibly only for certain special "canned" sequences.) */ |
| |
| #undef DBX_REGISTER_NUMBER |
| #define DBX_REGISTER_NUMBER(n) \ |
| (TARGET_64BIT ? dbx64_register_map[n] \ |
| : (n) == 0 ? 0 \ |
| : (n) == 1 ? 2 \ |
| : (n) == 2 ? 1 \ |
| : (n) == 3 ? 3 \ |
| : (n) == 4 ? 6 \ |
| : (n) == 5 ? 7 \ |
| : (n) == 6 ? 5 \ |
| : (n) == 7 ? 4 \ |
| : ((n) >= FIRST_STACK_REG && (n) <= LAST_STACK_REG) ? (n)+8 \ |
| : (-1)) |
| |
| /* 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). |
| |
| Apply stddef, handle (as yet unimplemented) pic. |
| |
| stddef renaming does NOT apply to Alpha. */ |
| |
| union tree_node; |
| const char *gen_stdcall_suffix PARAMS ((union tree_node *)); |
| |
| #undef ENCODE_SECTION_INFO |
| #define ENCODE_SECTION_INFO(DECL) \ |
| do \ |
| { \ |
| if (flag_pic) \ |
| { \ |
| rtx rtl = (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \ |
| ? TREE_CST_RTL (DECL) : DECL_RTL (DECL)); \ |
| SYMBOL_REF_FLAG (XEXP (rtl, 0)) \ |
| = (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \ |
| || ! TREE_PUBLIC (DECL)); \ |
| } \ |
| if (TREE_CODE (DECL) == FUNCTION_DECL) \ |
| if (lookup_attribute ("stdcall", \ |
| TYPE_ATTRIBUTES (TREE_TYPE (DECL)))) \ |
| XEXP (DECL_RTL (DECL), 0) = \ |
| gen_rtx (SYMBOL_REF, Pmode, gen_stdcall_suffix (DECL)); \ |
| } \ |
| while (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 { \ |
| const char *_p; \ |
| const char *_name = SYMBOL_NAME; \ |
| for (_p = _name; *_p && *_p != '@'; ++_p) \ |
| ; \ |
| if (*_p == '@') \ |
| { \ |
| int _len = _p - _name; \ |
| char *_new_name = (char *) alloca (_len + 1); \ |
| strncpy (_new_name, _name, _len); \ |
| _new_name[_len] = '\0'; \ |
| (VAR) = _new_name; \ |
| } \ |
| else \ |
| (VAR) = _name; \ |
| } while (0) |
| |
| #if 0 |
| /* Turn this back on when the linker is updated to handle grouped |
| .data$ sections correctly. See corresponding note in i386/interix.c. |
| MK. */ |
| |
| /* 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 |
| |
| extern void i386_pe_unique_section (); |
| #define UNIQUE_SECTION(DECL,RELOC) i386_pe_unique_section (DECL, RELOC) |
| |
| #define SUPPORTS_ONE_ONLY 1 |
| |
| /* Switch into a generic section. */ |
| #define TARGET_ASM_NAMED_SECTION default_pe_asm_named_section |
| #endif /* 0 */ |
| |
| /* 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 |
| |
