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/* Definitions of target machine for GNU compiler, for SPARC running Solaris 2
Copyright 1992, 1995-8, 1999 Free Software Foundation, Inc.
Contributed by Ron Guilmette (rfg@netcom.com).
Additional changes by David V. Henkel-Wallace (gumby@cygnus.com).
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, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Supposedly the same as vanilla sparc svr4, except for the stuff below: */
#include "sparc/sysv4.h"
#undef CPP_PREDEFINES
#define CPP_PREDEFINES \
"-Dsparc -Dsun -Dunix -D__svr4__ -D__SVR4 \
-Asystem(unix) -Asystem(svr4)"
#undef CPP_SUBTARGET_SPEC
#define CPP_SUBTARGET_SPEC "\
%{pthreads:-D_REENTRANT -D_PTHREADS} \
%{!pthreads:%{threads:-D_REENTRANT -D_SOLARIS_THREADS}} \
%{compat-bsd:-iwithprefixbefore ucbinclude -I/usr/ucbinclude} \
"
/* The sun bundled assembler doesn't accept -Yd, (and neither does gas).
It's safe to pass -s always, even if -g is not used. */
#undef ASM_SPEC
#define ASM_SPEC "\
%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \
%{fpic:-K PIC} %{fPIC:-K PIC} \
%(asm_cpu) \
"
/* This is here rather than in sparc.h because it's not known what
other assemblers will accept. */
#if TARGET_CPU_DEFAULT == TARGET_CPU_v9
#undef ASM_CPU_DEFAULT_SPEC
#define ASM_CPU_DEFAULT_SPEC "-xarch=v8plus"
#endif
#if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
#undef ASM_CPU_DEFAULT_SPEC
#define ASM_CPU_DEFAULT_SPEC "-xarch=v8plusa"
#endif
#undef ASM_CPU_SPEC
#define ASM_CPU_SPEC "\
%{mcpu=v8plus:-xarch=v8plus} \
%{mcpu=ultrasparc:-xarch=v8plusa} \
%{!mcpu*:%(asm_cpu_default)} \
"
/* However it appears that Solaris 2.0 uses the same reg numbering as
the old BSD-style system did. */
#undef DBX_REGISTER_NUMBER
/* Same as sparc.h */
#define DBX_REGISTER_NUMBER(REGNO) \
(TARGET_FLAT && REGNO == FRAME_POINTER_REGNUM ? 31 : REGNO)
/* We use stabs-in-elf for debugging, because that is what the native
toolchain uses. */
#undef PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
/* The Solaris 2 assembler uses .skip, not .zero, so put this back. */
#undef ASM_OUTPUT_SKIP
#define ASM_OUTPUT_SKIP(FILE,SIZE) \
fprintf (FILE, "\t.skip %u\n", (SIZE))
/* Use .uahalf/.uaword so packed structure members don't generate
assembler errors when using the native assembler. */
#undef ASM_SHORT
#define ASM_SHORT ".uahalf"
#undef ASM_LONG
#define ASM_LONG ".uaword"
/* 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)
/* 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)
/* 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%ld", (PREFIX), (long)(NUM))
/* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us.
We don't use the standard LIB_SPEC only because we don't yet support c++ */
#undef STARTFILE_SPEC
#define STARTFILE_SPEC "%{!shared: \
%{!symbolic: \
%{p:mcrt1.o%s} \
%{!p: \
%{pg:gcrt1.o%s gmon.o%s} \
%{!pg:crt1.o%s}}}} \
crti.o%s \
%{ansi:values-Xc.o%s} \
%{!ansi: \
%{traditional:values-Xt.o%s} \
%{!traditional:values-Xa.o%s}} \
crtbegin.o%s"
/* ??? Note: in order for -compat-bsd to work fully,
we must somehow arrange to fixincludes /usr/ucbinclude
and put the result in $(libsubdir)/ucbinclude. */
#undef LIB_SPEC
#define LIB_SPEC \
"%{compat-bsd:-lucb -lsocket -lnsl -lelf -laio} \
%{!shared:\
%{!symbolic:\
%{pthreads:-lpthread} \
%{!pthreads:%{threads:-lthread}} \
%{p|pg:-ldl} -lc}}"
#undef ENDFILE_SPEC
#define ENDFILE_SPEC "crtend.o%s crtn.o%s"
/* This should be the same as in svr4.h, except with -R added. */
#undef LINK_SPEC
#define LINK_SPEC \
"%{h*} %{v:-V} \
%{b} %{Wl,*:%*} \
%{static:-dn -Bstatic} \
%{shared:-G -dy %{!mimpure-text:-z text}} \
%{symbolic:-Bsymbolic -G -dy -z text} \
%{G:-G} \
%{YP,*} \
%{R*} \
%{compat-bsd: \
%{!YP,*:%{pg:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
%{!pg:%{p:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
%{!p:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}}} \
-R /usr/ucblib} \
%{!compat-bsd: \
%{!YP,*:%{pg:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
%{!pg:%{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
%{!p:-Y P,/usr/ccs/lib:/usr/lib}}}} \
%{Qy:} %{!Qn:-Qy}"
/* This defines which switch letters take arguments.
It is as in svr4.h but with -R added. */
#undef SWITCH_TAKES_ARG
#define SWITCH_TAKES_ARG(CHAR) \
(DEFAULT_SWITCH_TAKES_ARG(CHAR) \
|| (CHAR) == 'R' \
|| (CHAR) == 'h' \
|| (CHAR) == 'x' \
|| (CHAR) == 'z')
/* ??? This does not work in SunOS 4.x, so it is not enabled in sparc.h.
Instead, it is enabled here, because it does work under Solaris. */
/* Define for support of TFmode long double and REAL_ARITHMETIC.
Sparc ABI says that long double is 4 words. */
#define LONG_DOUBLE_TYPE_SIZE 128
/* But indicate that it isn't supported by the hardware. */
#define WIDEST_HARDWARE_FP_SIZE 64
#define STDC_0_IN_SYSTEM_HEADERS
#define MULDI3_LIBCALL "__mul64"
#define DIVDI3_LIBCALL "__div64"
#define UDIVDI3_LIBCALL "__udiv64"
#define MODDI3_LIBCALL "__rem64"
#define UMODDI3_LIBCALL "__urem64"
#undef INIT_SUBTARGET_OPTABS
#define INIT_SUBTARGET_OPTABS \
fixsfdi_libfunc \
= init_one_libfunc (TARGET_ARCH64 ? "__ftol" : "__ftoll"); \
fixunssfdi_libfunc \
= init_one_libfunc (TARGET_ARCH64 ? "__ftoul" : "__ftoull"); \
fixdfdi_libfunc \
= init_one_libfunc (TARGET_ARCH64 ? "__dtol" : "__dtoll"); \
fixunsdfdi_libfunc \
= init_one_libfunc (TARGET_ARCH64 ? "__dtoul" : "__dtoull")
/* No weird SPARC variants on Solaris */
#undef TARGET_LIVE_G0
#define TARGET_LIVE_G0 0
#undef TARGET_BROKEN_SAVERESTORE
#define TARGET_BROKEN_SAVERESTORE 0
/* Solaris allows 64 bit out and global registers in 32 bit mode.
sparc_override_options will disable V8+ if not generating V9 code. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_EPILOGUE + MASK_FPU + MASK_V8PLUS)
#if TARGET_ARCH32
/* Override MACHINE_STATE_{SAVE,RESTORE} because we have special
traps available which can get and set the condition codes
reliably. */
#undef MACHINE_STATE_SAVE
#define MACHINE_STATE_SAVE(ID) \
unsigned long int ms_flags, ms_saveret; \
asm volatile("ta 0x20\n\t" \
"mov %%g1, %0\n\t" \
"mov %%g2, %1\n\t" \
: "=r" (ms_flags), "=r" (ms_saveret));
#undef MACHINE_STATE_RESTORE
#define MACHINE_STATE_RESTORE(ID) \
asm volatile("mov %0, %%g1\n\t" \
"mov %1, %%g2\n\t" \
"ta 0x21\n\t" \
: /* no outputs */ \
: "r" (ms_flags), "r" (ms_saveret));
#endif /* sparc32 */
/*
* Attempt to turn on access permissions for the stack.
*
* This code must be defined when compiling gcc but not when compiling
* libgcc2.a, unless we're generating code for 64 bits SPARC
*
* _SC_STACK_PROT is only defined for post 2.6, but we want this code
* to run always. 2.6 can change the stack protection but has no way to
* query it.
*
*/
#define TRANSFER_FROM_TRAMPOLINE \
static int need_enable_exec_stack; \
\
static void check_enabling(void) __attribute__ ((constructor)); \
static void check_enabling(void) \
{ \
extern long sysconf(int); \
\
int prot = (int) sysconf(515 /*_SC_STACK_PROT */); \
if (prot != 7) \
need_enable_exec_stack = 1; \
} \
\
void \
__enable_execute_stack (addr) \
void *addr; \
{ \
if (!need_enable_exec_stack) \
return; \
else { \
long size = getpagesize (); \
long mask = ~(size-1); \
char *page = (char *) (((long) addr) & mask); \
char *end = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \
\
/* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ \
if (mprotect (page, end - page, 7) < 0) \
perror ("mprotect of trampoline code"); \
} \
}
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