179 lines
5.7 KiB
C
179 lines
5.7 KiB
C
/* Definitions for Sun SPARC64 running FreeBSD using the ELF format
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Copyright (C) 2001, 2002, 2004, 2005, 2006 Free Software Foundation, Inc.
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Contributed by David E. O'Brien <obrien@FreeBSD.org> and BSDi.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to
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the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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/* $FreeBSD$ */
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#undef SUBTARGET_EXTRA_SPECS
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#define SUBTARGET_EXTRA_SPECS \
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{ "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }
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/* FreeBSD needs the platform name (sparc64) defined.
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Emacs needs to know if the arch is 64 or 32-bits.
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This also selects which targets are available via -mcpu. */
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#undef FBSD_TARGET_CPU_CPP_BUILTINS
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#define FBSD_TARGET_CPU_CPP_BUILTINS() \
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do \
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{ \
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builtin_define ("__LP64__"); \
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builtin_define ("__sparc64__"); \
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builtin_define ("__sparc_v9__"); \
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builtin_define ("__sparcv9"); \
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builtin_define ("__sparc__"); \
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builtin_define ("__arch64__"); \
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} \
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while (0)
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#define LINK_SPEC "%(link_arch) \
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%{!mno-relax:%{!r:-relax}} \
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%{p:%nconsider using `-pg' instead of `-p' with gprof(1)} \
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%{assert*} %{R*} %{rpath*} %{defsym*} \
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%{shared:-Bshareable %{h*} %{soname*}} \
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%{symbolic:-Bsymbolic} \
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%{!shared: \
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%{!static: \
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%{rdynamic:-export-dynamic} \
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%{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \
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%{static:-Bstatic}}"
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/************************[ Target stuff ]***********************************/
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/* Define the actual types of some ANSI-mandated types.
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Needs to agree with <machine/ansi.h>. GCC defaults come from c-decl.c,
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c-common.c, and config/<arch>/<arch>.h. */
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/* Earlier headers may get this wrong for FreeBSD.
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We use the GCC defaults instead. */
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#undef WCHAR_TYPE
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE 32
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/* Define for support of TFmode long double.
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SPARC ABI says that long double is 4 words. */
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#undef LONG_DOUBLE_TYPE_SIZE
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#define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
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/* Define this to set long double type size to use in libgcc2.c, which can
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not depend on target_flags. */
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#if defined(__arch64__) || defined(__LONG_DOUBLE_128__)
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#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
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#else
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#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
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#endif
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/* Definitions for 64-bit SPARC running systems with ELF. */
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#undef TARGET_VERSION
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#define TARGET_VERSION fprintf (stderr, " (FreeBSD/sparc64 ELF)");
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#define TARGET_ELF 1
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/* XXX */
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/* A 64 bit v9 compiler with stack-bias,
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in a Medium/mid code model environment. */
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT \
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(MASK_V9 + MASK_64BIT + MASK_PTR64 /* + MASK_FASTER_STRUCTS */ \
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+ MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU \
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+ MASK_LONG_DOUBLE_128 /* + MASK_HARD_QUAD */)
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/* The default code model. */
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#undef SPARC_DEFAULT_CMODEL
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#define SPARC_DEFAULT_CMODEL CM_MEDLOW
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#define ENABLE_EXECUTE_STACK \
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static int need_enable_exec_stack; \
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static void check_enabling(void) __attribute__ ((constructor)); \
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static void check_enabling(void) \
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{ \
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extern int sysctlbyname(const char *, void *, size_t *, void *, size_t);\
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int prot = 0; \
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size_t len = sizeof(prot); \
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\
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sysctlbyname ("kern.stackprot", &prot, &len, NULL, 0); \
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if (prot != 7) \
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need_enable_exec_stack = 1; \
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} \
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extern void __enable_execute_stack (void *); \
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void __enable_execute_stack (void *addr) \
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{ \
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if (!need_enable_exec_stack) \
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return; \
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else { \
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/* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ \
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if (mprotect (addr, TRAMPOLINE_SIZE, 7) < 0) \
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perror ("mprotect of trampoline code"); \
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} \
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}
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/************************[ Assembler stuff ]********************************/
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#undef LOCAL_LABEL_PREFIX
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#define LOCAL_LABEL_PREFIX "."
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/* XXX2 */
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/* This is how to store into the string LABEL
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the symbol_ref name of an internal numbered label where
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PREFIX is the class of label and NUM is the number within the class.
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This is suitable for output with `assemble_name'. */
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#undef ASM_GENERATE_INTERNAL_LABEL
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#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
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sprintf (LABEL, "*.L%s%lu", PREFIX, (unsigned long)(NUM))
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/************************[ Debugger stuff ]*********************************/
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/* This is the char to use for continuation (in case we need to turn
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continuation back on). */
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#undef DBX_CONTIN_CHAR
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#define DBX_CONTIN_CHAR '?'
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/* DWARF bits. */
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/* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets.
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Obviously the Dwarf2 folks havn't tried to actually build systems
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with their spec. On a 64-bit system, only 64-bit relocs become
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RELATIVE relocations. */
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/* #define DWARF_OFFSET_SIZE PTR_SIZE */
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#ifdef HAVE_AS_TLS
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#undef TARGET_SUN_TLS
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#undef TARGET_GNU_TLS
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#define TARGET_SUN_TLS 0
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#define TARGET_GNU_TLS 1
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#endif
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC \
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"%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} " \
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FBSD_ENDFILE_SPEC
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/* We use GNU ld so undefine this so that attribute((init_priority)) works. */
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#undef CTORS_SECTION_ASM_OP
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#undef DTORS_SECTION_ASM_OP
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