/* Definitions for Intel 386 running FreeBSD with ELF format   Copyright (C) 1996 Free Software Foundation, Inc.   Contributed by Eric Youngdale.   Modified for stabs-in-ELF by H.J. Lu.   Adapted from GNU/Linux version by John Polstra.   Continued development by David O'Brien <obrien@freebsd.org>This file is part of GNU CC.GNU CC is free software; you can redistribute it and/or modifyit under the terms of the GNU General Public License as published bythe 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 ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See theGNU General Public License for more details.You should have received a copy of the GNU General Public Licensealong with GNU CC; see the file COPYING.  If not, write tothe Free Software Foundation, 59 Temple Place - Suite 330,Boston, MA 02111-1307, USA.  */#undef TARGET_VERSION#define TARGET_VERSION fprintf (stderr, " (i386 FreeBSD/ELF)");/* The svr4 ABI for the i386 says that records and unions are returned   in memory.  *//* On FreeBSD, we do not. */#undef DEFAULT_PCC_STRUCT_RETURN#define DEFAULT_PCC_STRUCT_RETURN 0/* This gets defined in tm.h->linux.h->svr4.h, and keeps us from using   libraries compiled with the native cc, so undef it. */#undef NO_DOLLAR_IN_LABEL/* Use more efficient ``thunks'' to implement C++ vtables. */#undef DEFAULT_VTABLE_THUNKS#define DEFAULT_VTABLE_THUNKS 1/* Override the default comment-starter of "/".  */#undef ASM_COMMENT_START#define ASM_COMMENT_START "#"#undef ASM_APP_ON#define ASM_APP_ON "#APP\n"#undef ASM_APP_OFF#define ASM_APP_OFF "#NO_APP\n"#undef SET_ASM_OP#define SET_ASM_OP	".set"/* This is how to output an element of a case-vector that is relative.   This is only used for PIC code.  See comments by the `casesi' insn in   i386.md for an explanation of the expression this outputs. */#undef ASM_OUTPUT_ADDR_DIFF_ELT#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \  fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE)/* Indicate that jump tables go in the text section.  This is   necessary when compiling PIC code.  */#define JUMP_TABLES_IN_TEXT_SECTION (flag_pic)/* Use stabs instead of DWARF debug format.  */#undef PREFERRED_DEBUGGING_TYPE#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG/* Copy this from the svr4 specifications... *//* Define the register numbers to be used in Dwarf debugging information.   The SVR4 reference port C compiler uses the following register numbers   in its Dwarf output code:	0 for %eax (gnu regno = 0)	1 for %ecx (gnu regno = 2)	2 for %edx (gnu regno = 1)	3 for %ebx (gnu regno = 3)	4 for %esp (gnu regno = 7)	5 for %ebp (gnu regno = 6)	6 for %esi (gnu regno = 4)	7 for %edi (gnu regno = 5)   The following three DWARF register numbers are never generated by   the SVR4 C compiler or by the GNU compilers, but SDB on x86/svr4   believes these numbers have these meanings.	8  for %eip    (no gnu equivalent)	9  for %eflags (no gnu equivalent)	10 for %trapno (no gnu equivalent)   It is not at all clear how we should number the FP stack registers   for the x86 architecture.  If the version of SDB on x86/svr4 were   a bit less brain dead with respect to floating-point then we would   have a precedent to follow with respect to DWARF register numbers   for x86 FP registers, but the SDB on x86/svr4 is so completely   broken with respect to FP registers that it is hardly worth thinking   of it as something to strive for compatibility with.   The version of x86/svr4 SDB I have at the moment does (partially)   seem to believe that DWARF register number 11 is associated with   the x86 register %st(0), but that's about all.  Higher DWARF   register numbers don't seem to be associated with anything in   particular, and even for DWARF regno 11, SDB only seems to under-   stand that it should say that a variable lives in %st(0) (when   asked via an `=' command) if we said it was in DWARF regno 11,   but SDB still prints garbage when asked for the value of the   variable in question (via a `/' command).   (Also note that the labels SDB prints for various FP stack regs   when doing an `x' command are all wrong.)   Note that these problems generally don't affect the native SVR4   C compiler because it doesn't allow the use of -O with -g and   because when it is *not* optimizing, it allocates a memory   location for each floating-point variable, and the memory   location is what gets described in the DWARF AT_location   attribute for the variable in question.   Regardless of the severe mental illness of the x86/svr4 SDB, we   do something sensible here and we use the following DWARF   register numbers.  Note that these are all stack-top-relative   numbers.	11 for %st(0) (gnu regno = 8)	12 for %st(1) (gnu regno = 9)	13 for %st(2) (gnu regno = 10)	14 for %st(3) (gnu regno = 11)	15 for %st(4) (gnu regno = 12)	16 for %st(5) (gnu regno = 13)	17 for %st(6) (gnu regno = 14)	18 for %st(7) (gnu regno = 15)*/#undef DBX_REGISTER_NUMBER#define DBX_REGISTER_NUMBER(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)+3 \ : (-1))/* Tell final.c that we don't need a label passed to mcount.  */#undef FUNCTION_PROFILER#define FUNCTION_PROFILER(FILE, LABELNO)  \{									\  if (flag_pic)								\      fprintf (FILE, "\tcall *.mcount@GOT(%%ebx)\n");			\  else									\      fprintf (FILE, "\tcall .mcount\n");				\}#undef SIZE_TYPE#define SIZE_TYPE "unsigned int" #undef PTRDIFF_TYPE#define PTRDIFF_TYPE "int"  #undef WCHAR_TYPE#define WCHAR_TYPE "int"#undef WCHAR_UNSIGNED#define WCHAR_UNSIGNED 0   #undef WCHAR_TYPE_SIZE#define WCHAR_TYPE_SIZE BITS_PER_WORD    #undef CPP_PREDEFINES#define CPP_PREDEFINES "-Di386 -Dunix -D__ELF__ -D__FreeBSD__ -Asystem(unix) -Asystem(FreeBSD) -Acpu(i386) -Amachine(i386)"#undef CPP_SPEC#define CPP_SPEC "%(cpp_cpu) %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE}"/* This defines which switch letters take arguments.  On FreeBSD, most of   the normal cases (defined in gcc.c) apply, and we also have -h* and   -z* options (for the linker) (comming from svr4).   We also have -R (alias --rpath), no -z, --soname (-h), --assert etc. */#undef SWITCH_TAKES_ARG#define SWITCH_TAKES_ARG(CHAR) \  (DEFAULT_SWITCH_TAKES_ARG (CHAR) \   || (CHAR) == 'h' \   || (CHAR) == 'z' \   || (CHAR) == 'R')/* Provide a STARTFILE_SPEC appropriate for FreeBSD.  Here we add   the magical crtbegin.o file (see crtstuff.c) which provides part 	of the support for getting C++ file-scope static object constructed 	before entering `main'. */   #undef	STARTFILE_SPEC#define STARTFILE_SPEC \  "%{!shared: \     %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \		       %{!p:%{profile:gcrt1.o%s} \			 %{!profile:crt1.o%s}}}} \   crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"/* Provide a ENDFILE_SPEC appropriate for FreeBSD.  Here we tack on   the magical crtend.o file (see crtstuff.c) which provides part of 	the support for getting C++ file-scope static object constructed 	before entering `main', followed by a normal "finalizer" file, 	`crtn.o'.  */#undef	ENDFILE_SPEC#define ENDFILE_SPEC \  "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"/* Provide a LIB_SPEC appropriate for FreeBSD.  Just select the appropriate   libc, depending on whether we're doing profiling or need threads support.   (simular to the default, except no -lg, and no -p.  */#undef LIB_SPEC#define LIB_SPEC "%{!shared: \   %{!pg:%{!pthread:%{!kthread:-lc} \     %{kthread:-lpthread -lc}} \     %{pthread:-lc_r}} \   %{pg:%{!pthread:%{!kthread:-lc_p} \     %{kthread:-lpthread_p -lc_p}} \     %{pthread:-lc_r_p}}}"/* Provide a LINK_SPEC appropriate for FreeBSD.  Here we provide support   for the special GCC options -static and -shared, which allow us to   link things in one of these three modes by applying the appropriate   combinations of options at link-time. We like to support here for   as many of the other GNU linker options as possible. But I don't   have the time to search for those flags. I am sure how to add   support for -soname shared_object_name. H.J.   I took out %{v:%{!V:-V}}. It is too much :-(. They can use   -Wl,-V.   When the -shared link option is used a final link is not being   done.  */#undef	LINK_SPEC#define LINK_SPEC "-m elf_i386 \  %{Wl,*:%*} \  %{v:-V} \  %{assert*} %{R*} %{rpath*} %{defsym*} \  %{shared:-Bshareable %{h*} %{soname*}} \    %{!shared: \      %{!static: \        %{rdynamic:-export-dynamic} \	%{!dynamic-linker:-dynamic-linker /usr/libexec/ld-elf.so.1}} \    %{static:-Bstatic}} \  %{symbolic:-Bsymbolic}"/* A C statement to output to the stdio stream FILE an assembler   command to advance the location counter to a multiple of 1<<LOG   bytes if it is within MAX_SKIP bytes.   This is used to align code labels according to Intel recommendations.  */#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \  if ((LOG) != 0) {\    if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \    else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \  }#endif