/* Definitions for Sun SPARC64 running FreeBSD using the ELF format Copyright (C) 2001, 2002 Free Software Foundation, Inc. Contributed by David E. O'Brien <obrien@FreeBSD.org> and BSDi. 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, 675 Mass Ave, Cambridge, MA 02139, USA. */ /* FreeBSD needs the platform name (sparc64) defined. Emacs needs to know if the arch is 64 or 32-bits. */ #undef CPP_CPU64_DEFAULT_SPEC #define CPP_CPU64_DEFAULT_SPEC "-D__sparc64__ -D__sparc_v9__ -D__arch64__" /* Because we include sparc/sysv4.h. */ #undef CPP_PREDEFINES #define CPP_PREDEFINES FBSD_CPP_PREDEFINES #define LINK_SPEC "%(link_arch) \ %{!mno-relax:%{!r:-relax}} \ %{p:%e`-p' not supported; use `-pg' and gprof(1)} \ %{Wl,*:%*} \ %{assert*} %{R*} %{rpath*} %{defsym*} \ %{shared:-Bshareable %{h*} %{soname*}} \ %{symbolic:-Bsymbolic} \ %{!shared: \ %{!static: \ %{rdynamic:-export-dynamic} \ %{!dynamic-linker:-dynamic-linker /usr/libexec/ld-elf.so.1}} \ %{static:-Bstatic}}" /************************[ Target stuff ]***********************************/ /* Define the actual types of some ANSI-mandated types. Needs to agree with <machine/ansi.h>. GCC defaults come from c-decl.c, c-common.c, and config/<arch>/<arch>.h. */ /* Earlier headers may get this wrong for FreeBSD. We use the GCC defaults instead. */ #undef WCHAR_TYPE #undef WCHAR_TYPE_SIZE #define WCHAR_TYPE_SIZE 32 /* Define for support of TFmode long double. SPARC ABI says that long double is 4 words. */ #undef LONG_DOUBLE_TYPE_SIZE #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64) /* Constant which presents upper bound of the above value. */ #undef MAX_LONG_DOUBLE_TYPE_SIZE #define MAX_LONG_DOUBLE_TYPE_SIZE 128 /* Define this to set long double type size to use in libgcc2.c, which can not depend on target_flags. */ #if defined(__arch64__) || defined(__LONG_DOUBLE_128__) #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128 #else #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64 #endif /* Definitions for 64-bit SPARC running systems with ELF. */ #undef SUBTARGET_SWITCHES #define SUBTARGET_SWITCHES \ {"long-double-64", -MASK_LONG_DOUBLE_128, N_("Use 64 bit long doubles") }, \ {"long-double-128", MASK_LONG_DOUBLE_128, N_("Use 128 bit long doubles") }, #undef TARGET_VERSION #define TARGET_VERSION fprintf (stderr, " (FreeBSD/sparc64 ELF)"); #define TARGET_ELF 1 /* XXX */ /* A 64 bit v9 compiler with stack-bias, in a Medium/mid code model environment. */ #undef TARGET_DEFAULT #define TARGET_DEFAULT \ (MASK_V9 + MASK_64BIT + MASK_PTR64 /* + MASK_FASTER_STRUCTS */ \ + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU \ + MASK_LONG_DOUBLE_128 /* + MASK_HARD_QUAD */) /* The default code model. */ #undef SPARC_DEFAULT_CMODEL #define SPARC_DEFAULT_CMODEL CM_MEDLOW #define TRANSFER_FROM_TRAMPOLINE \ static int need_enable_exec_stack; \ static void check_enabling(void) __attribute__ ((constructor)); \ static void check_enabling(void) \ { \ extern int sysctlbyname(const char *, void *, size_t *, void *, size_t);\ int prot = 0; \ size_t len = sizeof(prot); \ \ sysctlbyname ("kern.stackprot", &prot, &len, NULL, 0); \ if (prot != 7) \ need_enable_exec_stack = 1; \ } \ extern void __enable_execute_stack (void *); \ void __enable_execute_stack (void *addr) \ { \ if (!need_enable_exec_stack) \ return; \ else { \ /* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ \ if (mprotect (addr, TRAMPOLINE_SIZE, 7) < 0) \ perror ("mprotect of trampoline code"); \ } \ } /************************[ Assembler stuff ]********************************/ #undef LOCAL_LABEL_PREFIX #define LOCAL_LABEL_PREFIX "." /* XXX2 */ /* This is how to output a definition of an internal numbered label where PREFIX is the class of label and NUM is the number within the class. */ #undef ASM_OUTPUT_INTERNAL_LABEL #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \ fprintf (FILE, ".L%s%d:\n", PREFIX, NUM) /* XXX2 */ /* This is how to output a reference to an internal numbered label where PREFIX is the class of label and NUM is the number within the class. */ #undef ASM_OUTPUT_INTERNAL_LABELREF #define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM) \ fprintf (FILE, ".L%s%d", PREFIX, NUM) /* XXX2 */ /* This is how to store into the string LABEL the symbol_ref name of an internal numbered label where PREFIX is the class of label and NUM is the number within the class. This is suitable for output with `assemble_name'. */ #undef ASM_GENERATE_INTERNAL_LABEL #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ sprintf (LABEL, "*.L%s%d", PREFIX, NUM) /************************[ Debugger stuff ]*********************************/ /* This is the char to use for continuation (in case we need to turn continuation back on). */ #undef DBX_CONTIN_CHAR #define DBX_CONTIN_CHAR '?' /* DWARF bits. */ /* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets. Obviously the Dwarf2 folks havn't tried to actually build systems with their spec. On a 64-bit system, only 64-bit relocs become RELATIVE relocations. */ /* #define DWARF_OFFSET_SIZE PTR_SIZE */ #undef ENDFILE_SPEC #define ENDFILE_SPEC \ "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s}" \ FBSD_ENDFILE_SPEC /* We use GNU ld so undefine this so that attribute((init_priority)) works. */ #undef CTORS_SECTION_ASM_OP #undef DTORS_SECTION_ASM_OP