Mercurial > hg > CbC > CbC_gcc
diff gcc/config/i386/freebsd.h @ 0:a06113de4d67
first commit
author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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children | f6334be47118 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/config/i386/freebsd.h Fri Jul 17 14:47:48 2009 +0900 @@ -0,0 +1,140 @@ +/* Definitions for Intel 386 running FreeBSD with ELF format + Copyright (C) 1996, 2000, 2002, 2004, 2007 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 GCC. + +GCC 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 3, or (at your option) +any later version. + +GCC 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 GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + + +#define TARGET_VERSION fprintf (stderr, " (i386 FreeBSD/ELF)"); + +/* 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 DBX_REGISTER_NUMBER +#define DBX_REGISTER_NUMBER(n) \ + (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n]) + +#undef NO_PROFILE_COUNTERS +#define NO_PROFILE_COUNTERS 1 + +/* Tell final.c that we don't need a label passed to mcount. */ + +#undef MCOUNT_NAME +#define MCOUNT_NAME ".mcount" + +/* Make gcc agree with <machine/ansi.h>. */ + +#undef SIZE_TYPE +#define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int") + +#undef PTRDIFF_TYPE +#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") + +#undef WCHAR_TYPE_SIZE +#define WCHAR_TYPE_SIZE (TARGET_64BIT ? 32 : BITS_PER_WORD) + +#undef SUBTARGET_EXTRA_SPECS /* i386.h bogusly defines it. */ +#define SUBTARGET_EXTRA_SPECS \ + { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER } + +/* 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 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 "\ + %{p:%nconsider using `-pg' instead of `-p' with gprof(1)} \ + %{v:-V} \ + %{assert*} %{R*} %{rpath*} %{defsym*} \ + %{shared:-Bshareable %{h*} %{soname*}} \ + %{!shared: \ + %{!static: \ + %{rdynamic:-export-dynamic} \ + %{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \ + %{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 +#undef ASM_OUTPUT_MAX_SKIP_ALIGN +#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 + +/* Don't default to pcc-struct-return, we want to retain compatibility with + older gcc versions AND pcc-struct-return is nonreentrant. + (even though the SVR4 ABI for the i386 says that records and unions are + returned in memory). */ + +#undef DEFAULT_PCC_STRUCT_RETURN +#define DEFAULT_PCC_STRUCT_RETURN 0 + +/* FreeBSD sets the rounding precision of the FPU to 53 bits. Let the + compiler get the contents of <float.h> and std::numeric_limits correct. */ +#undef TARGET_96_ROUND_53_LONG_DOUBLE +#define TARGET_96_ROUND_53_LONG_DOUBLE (!TARGET_64BIT)