crtfastmath.c: Include <signal.h>, <ucontext.h>.
gcc: * config/i386/crtfastmath.c [!__x86_64__ && __sun__ && __svr4__]: Include <signal.h>, <ucontext.h>. (sigill_caught): Define. (sigill_hdlr): New function. (set_fast_math) [!__x86_64__ && __sun__ && __svr4__]: Check if SSE insns can be executed. * config/sol2.h (ENDFILE_SPEC): Use crtfastmath.o if -ffast-math etc. * config/sparc/sol2.h (ENDFILE_SPEC): Remove. libgcc: * config.host (i[34567]86-*-solaris2*): Add i386/t-crtfm to tmake_file. Add crtfastmath.o to extra_parts. From-SVN: r174532
This commit is contained in:
Rainer Orth
Rainer Orth
parent
a3fab9c2a9
commit
0699e415bc
|
|
@ -1,3 +1,15 @@
|
|||
2011-06-01 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
|
||||
|
||||
* config/i386/crtfastmath.c [!__x86_64__ && __sun__ && __svr4__]:
|
||||
Include <signal.h>, <ucontext.h>.
|
||||
(sigill_caught): Define.
|
||||
(sigill_hdlr): New function.
|
||||
(set_fast_math) [!__x86_64__ && __sun__ && __svr4__]: Check if SSE
|
||||
insns can be executed.
|
||||
* config/sol2.h (ENDFILE_SPEC): Use crtfastmath.o if -ffast-math
|
||||
etc.
|
||||
* config/sparc/sol2.h (ENDFILE_SPEC): Remove.
|
||||
|
||||
2011-06-01 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
|
||||
|
||||
* config/t-slibgcc-darwin: Move to ...
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
* Copyright (C) 2005, 2007, 2009 Free Software Foundation, Inc.
|
||||
* Copyright (C) 2005, 2007, 2009, 2011 Free Software Foundation, Inc.
|
||||
*
|
||||
* This file is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the
|
||||
|
|
@ -30,6 +30,26 @@
|
|||
#include "cpuid.h"
|
||||
#endif
|
||||
|
||||
#if !defined __x86_64 && defined __sun__ && defined __svr4__
|
||||
#include <signal.h>
|
||||
#include <ucontext.h>
|
||||
|
||||
static volatile sig_atomic_t sigill_caught;
|
||||
|
||||
static void
|
||||
sigill_hdlr (int sig __attribute((unused)),
|
||||
siginfo_t *sip __attribute__((unused)),
|
||||
ucontext_t *ucp)
|
||||
{
|
||||
sigill_caught = 1;
|
||||
/* Set PC to the instruction after the faulting one to skip over it,
|
||||
otherwise we enter an infinite loop. 4 is the size of the stmxcsr
|
||||
instruction. */
|
||||
ucp->uc_mcontext.gregs[EIP] += 4;
|
||||
setcontext (ucp);
|
||||
}
|
||||
#endif
|
||||
|
||||
static void __attribute__((constructor))
|
||||
#ifndef __x86_64__
|
||||
/* The i386 ABI only requires 4-byte stack alignment, so this is necessary
|
||||
|
|
@ -47,9 +67,31 @@ set_fast_math (void)
|
|||
|
||||
if (edx & bit_SSE)
|
||||
{
|
||||
unsigned int mxcsr = __builtin_ia32_stmxcsr ();
|
||||
unsigned int mxcsr;
|
||||
|
||||
mxcsr |= MXCSR_FTZ;
|
||||
#if defined __sun__ && defined __svr4__
|
||||
/* Solaris 2 before Solaris 9 4/04 cannot execute SSE instructions even
|
||||
if the CPU supports them. Programs receive SIGILL instead, so check
|
||||
for that at runtime. */
|
||||
struct sigaction act, oact;
|
||||
|
||||
act.sa_handler = sigill_hdlr;
|
||||
sigemptyset (&act.sa_mask);
|
||||
/* Need to set SA_SIGINFO so a ucontext_t * is passed to the handler. */
|
||||
act.sa_flags = SA_SIGINFO;
|
||||
sigaction (SIGILL, &act, &oact);
|
||||
|
||||
/* We need a single SSE instruction here so the handler can safely skip
|
||||
over it. */
|
||||
__asm__ volatile ("movss %xmm2,%xmm1");
|
||||
|
||||
sigaction (SIGILL, &oact, NULL);
|
||||
|
||||
if (sigill_caught)
|
||||
return;
|
||||
#endif /* __sun__ && __svr4__ */
|
||||
|
||||
mxcsr = __builtin_ia32_stmxcsr () | MXCSR_FTZ;
|
||||
|
||||
if (edx & bit_FXSAVE)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -141,7 +141,9 @@ along with GCC; see the file COPYING3. If not see
|
|||
%{p|pg:-ldl} -lc}"
|
||||
|
||||
#undef ENDFILE_SPEC
|
||||
#define ENDFILE_SPEC "crtend.o%s crtn.o%s"
|
||||
#define ENDFILE_SPEC \
|
||||
"%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
|
||||
crtend.o%s crtn.o%s"
|
||||
|
||||
/* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us. */
|
||||
#undef STARTFILE_SPEC
|
||||
|
|
|
|||
|
|
@ -117,11 +117,6 @@ along with GCC; see the file COPYING3. If not see
|
|||
#define NO_DBX_BNSYM_ENSYM 1
|
||||
|
||||
|
||||
#undef ENDFILE_SPEC
|
||||
#define ENDFILE_SPEC \
|
||||
"%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
|
||||
crtend.o%s crtn.o%s"
|
||||
|
||||
/* Select a format to encode pointers in exception handling data. CODE
|
||||
is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
|
||||
true if the symbol may be affected by dynamic relocations.
|
||||
|
|
|
|||
|
|
@ -1,3 +1,9 @@
|
|||
2011-06-01 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
|
||||
|
||||
* config.host (i[34567]86-*-solaris2*): Add i386/t-crtfm to
|
||||
tmake_file.
|
||||
Add crtfastmath.o to extra_parts.
|
||||
|
||||
2011-06-01 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
|
||||
|
||||
* config/gmon-sol2.c: Reindent.
|
||||
|
|
|
|||
|
|
@ -338,6 +338,8 @@ i[34567]86-*-rtems*)
|
|||
tmake_file="${tmake_file} t-crtin i386/t-softfp i386/t-crtstuff t-rtems"
|
||||
;;
|
||||
i[34567]86-*-solaris2*)
|
||||
tmake_file="$tmake_file i386/t-crtfm"
|
||||
extra_parts="$extra_parts crtfastmath.o"
|
||||
;;
|
||||
i[4567]86-wrs-vxworks|i[4567]86-wrs-vxworksae)
|
||||
;;
|
||||
|
|
|
|||
Loading…
Reference in New Issue