-/* Definitions of target machine for GNU compiler for Intel 80386
- running FreeBSD.
- Copyright (C) 1988, 1992, 1994 Free Software Foundation, Inc.
- Contributed by Poul-Henning Kamp <phk@login.dkuug.dk>
+/* Definitions for Intel 386 running FreeBSD with ELF format
+ Copyright (C) 1996, 2000, 2002 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.
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, 675 Mass Ave, Cambridge, MA 02139, USA. */
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
-/* This goes away when the math-emulator is fixed */
-#define TARGET_CPU_DEFAULT 0400 /* TARGET_NO_FANCY_MATH_387 */
-/* This is tested by i386gas.h. */
-#define YES_UNDERSCORES
+#define TARGET_VERSION fprintf (stderr, " (i386 FreeBSD/ELF)");
-#include "i386/gstabs.h"
+/* Override the default comment-starter of "/". */
+#undef ASM_COMMENT_START
+#define ASM_COMMENT_START "#"
-/* Get perform_* macros to build libgcc.a. */
-#include "i386/perform.h"
-
-#undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-Dunix -Di386 -D__FreeBSD__ -D__386BSD__ -Asystem(unix) -Asystem(FreeBSD) -Acpu(i386) -Amachine(i386)"
-
-/* Like the default, except no -lg. */
-#define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
-
-#undef SIZE_TYPE
-#define SIZE_TYPE "unsigned int"
-
-#undef PTRDIFF_TYPE
-#define PTRDIFF_TYPE "int"
-
-#undef WCHAR_TYPE
-#define WCHAR_TYPE "short unsigned int"
-
-#define WCHAR_UNSIGNED 1
-
-#undef WCHAR_TYPE_SIZE
-#define WCHAR_TYPE_SIZE 16
-
-#define HAVE_ATEXIT
-
-/* There are conflicting reports about whether this system uses
- a different assembler syntax. wilson@cygnus.com says # is right. */
-#undef COMMENT_BEGIN
-#define COMMENT_BEGIN "#"
-
-#undef ASM_APP_ON
+#undef ASM_APP_ON
#define ASM_APP_ON "#APP\n"
-#undef ASM_APP_OFF
+#undef ASM_APP_OFF
#define ASM_APP_OFF "#NO_APP\n"
-\f
-/* The following macros are stolen from i386v4.h */
-/* These have to be defined to get PIC code correct */
-/* 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 DBX_REGISTER_NUMBER
+#define DBX_REGISTER_NUMBER(n) \
+ (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
-#undef ASM_OUTPUT_ADDR_DIFF_ELT
-#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
- fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE)
+#undef NO_PROFILE_COUNTERS
+#define NO_PROFILE_COUNTERS 1
-/* Indicate that jump tables go in the text section. This is
- necessary when compiling PIC code. */
+/* Tell final.c that we don't need a label passed to mcount. */
-#define JUMP_TABLES_IN_TEXT_SECTION
+#undef MCOUNT_NAME
+#define MCOUNT_NAME ".mcount"
-/* Don't default to pcc-struct-return, because gcc is the only compiler, and
- we want to retain compatibility with older gcc versions. */
-#define DEFAULT_PCC_STRUCT_RETURN 0
-\f
-/* Profiling routines, partially copied from i386/osfrose.h. */
-
-/* Redefine this to use %eax instead of %edx. */
-#undef FUNCTION_PROFILER
-#define FUNCTION_PROFILER(FILE, LABELNO) \
-{ \
- if (flag_pic) \
- { \
- fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%eax\n", \
- LPREFIX, (LABELNO)); \
- fprintf (FILE, "\tcall *mcount@GOT(%%ebx)\n"); \
- } \
- else \
- { \
- fprintf (FILE, "\tmovl $%sP%d,%%eax\n", LPREFIX, (LABELNO)); \
- fprintf (FILE, "\tcall mcount\n"); \
- } \
-}
-
-/*
- * Some imports from svr4.h in support of shared libraries.
- * Currently, we need the DECLARE_OBJECT_SIZE stuff.
- */
-
-/* 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 ".type"
-#define SIZE_ASM_OP ".size"
-#define WEAK_ASM_OP ".weak"
-
-/* 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)
+/* Make gcc agree with <machine/ansi.h>. */
+
+#undef SIZE_TYPE
+#define SIZE_TYPE "unsigned int"
+
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE "int"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE BITS_PER_WORD
+
+/* 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)} \
+ %{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
+#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
-/* These macros generate the special .type and .size directives which
- are used to set the corresponding fields of the linker symbol table
- entries in an ELF object file under SVR4. These macros also output
- the starting labels for the relevant functions/objects. */
-
-/* Write the extra assembler code needed to declare a function properly.
- Some svr4 assemblers need to also have something extra said about the
- function's return value. We allow for that here. */
-
-#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
- do { \
- fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
- assemble_name (FILE, NAME); \
- putc (',', FILE); \
- fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
- putc ('\n', FILE); \
- ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
- ASM_OUTPUT_LABEL(FILE, NAME); \
- } while (0)
+/* 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). */
-/* Write the extra assembler code needed to declare an object properly. */
-
-#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
- do { \
- fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
- assemble_name (FILE, NAME); \
- putc (',', FILE); \
- fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
- putc ('\n', FILE); \
- size_directive_output = 0; \
- if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
- { \
- size_directive_output = 1; \
- fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
- assemble_name (FILE, NAME); \
- fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
- } \
- ASM_OUTPUT_LABEL(FILE, NAME); \
- } while (0)
+#undef DEFAULT_PCC_STRUCT_RETURN
+#define DEFAULT_PCC_STRUCT_RETURN 0
-/* Output the size directive for a decl in rest_of_decl_compilation
- in the case where we did not do so before the initializer.
- Once we find the error_mark_node, we know that the value of
- size_directive_output was set
- by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
-
-#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
-do { \
- char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
- if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
- && ! AT_END && TOP_LEVEL \
- && DECL_INITIAL (DECL) == error_mark_node \
- && !size_directive_output) \
- { \
- fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
- assemble_name (FILE, name); \
- fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL)));\
- } \
- } while (0)
-
-
-/* This is how to declare the size of a function. */
-
-#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
- do { \
- if (!flag_inhibit_size_directive) \
- { \
- char label[256]; \
- static int labelno; \
- labelno++; \
- ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
- ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
- fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
- assemble_name (FILE, (FNAME)); \
- fprintf (FILE, ","); \
- assemble_name (FILE, label); \
- fprintf (FILE, "-"); \
- assemble_name (FILE, (FNAME)); \
- putc ('\n', FILE); \
- } \
+/* 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. */
+#define SUBTARGET_OVERRIDE_OPTIONS \
+ do { \
+ if (!TARGET_64BIT) { \
+ real_format_for_mode[XFmode - QFmode] \
+ = &ieee_extended_intel_96_round_53_format; \
+ real_format_for_mode[TFmode - QFmode] \
+ = &ieee_extended_intel_96_round_53_format; \
+ } \
} while (0)
-
-#define ASM_SPEC " %| %{fpic:-k} %{fPIC:-k}"
-#define LINK_SPEC \
- "%{!nostdlib:%{!r*:%{!e*:-e start}}} -dc -dp %{static:-Bstatic} %{assert*}"
-
-/* This is defined when gcc is compiled in the BSD-directory-tree, and must
- * make up for the gap to all the stuff done in the GNU-makefiles.
- */
-
-#ifdef FREEBSD_NATIVE
-
-#define INCLUDE_DEFAULTS { \
- { "/usr/include", 0 }, \
- { "/usr/include/g++", 1 }, \
- { 0, 0} \
- }
-
-#undef MD_EXEC_PREFIX
-#define MD_EXEC_PREFIX "/usr/libexec/"
-
-#undef STANDARD_STARTFILE_PREFIX
-#define STANDARD_STARTFILE_PREFIX "/usr/lib"
-
-#if 0 /* This is very wrong!!! */
-#define DEFAULT_TARGET_MACHINE "i386-unknown-freebsd_1.0"
-#define GPLUSPLUS_INCLUDE_DIR "/usr/local/lib/gcc-lib/i386-unknown-freebsd_1.0/2.5.8/include"
-#define TOOL_INCLUDE_DIR "/usr/local/i386-unknown-freebsd_1.0/include"
-#define GCC_INCLUDE_DIR "/usr/local/lib/gcc-lib/i386-unknown-freebsd_1.0/2.5.8/include"
-#endif
-
-#endif /* FREEBSD_NATIVE */
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