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rewrite access to control and FPU structures

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This commit is contained in:
Riccardo Mottola 2017-12-16 19:50:27 +01:00
parent dbe31570d0
commit 442bbc38c3
1 changed files with 14 additions and 6 deletions
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20
toolkit/xre/nsSigHandlers.cpp
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@ -37,6 +37,14 @@
#include <ucontext.h>
#endif
#ifdef XP_MACOSX
#ifndef __ppc__
#include <sys/ucontext.h>
#include <mach/mach_types.h>
#include <mach/thread_status.h>
#endif
#endif
static char _progname[1024] = "huh?";
// Note: some tests manipulate this value.
@ -160,14 +168,14 @@ static void fpehandler(int signum, siginfo_t *si, void *context)
ucontext_t *uc = (ucontext_t *)context;
#if defined(__i386__) || defined(__amd64__)
_STRUCT_FP_CONTROL *ctrl = &uc->uc_mcontext->__fs.__fpu_fcw;
ctrl->__invalid = ctrl->__denorm = ctrl->__zdiv = ctrl->__ovrfl = ctrl->__undfl = ctrl->__precis = 1;
fp_control *ctrl = &uc->uc_mcontext->fs.fpu_fcw;
ctrl->invalid = ctrl->denorm = ctrl->zdiv = ctrl->ovrfl = ctrl->undfl = ctrl->precis = 1;
_STRUCT_FP_STATUS *status = &uc->uc_mcontext->__fs.__fpu_fsw;
status->__invalid = status->__denorm = status->__zdiv = status->__ovrfl = status->__undfl =
status->__precis = status->__stkflt = status->__errsumm = 0;
fp_status *status = &uc->uc_mcontext->fs.fpu_fsw;
status->invalid = status->denorm = status->zdiv = status->ovrfl = status->undfl =
status->precis = status->stkflt = status->errsumm = 0;
uint32_t *mxcsr = &uc->uc_mcontext->__fs.__fpu_mxcsr;
uint32_t *mxcsr = &uc->uc_mcontext->fs.fpu_mxcsr;
*mxcsr |= SSE_EXCEPTION_MASK; /* disable all SSE exceptions */
*mxcsr &= ~SSE_STATUS_FLAGS; /* clear all pending SSE exceptions */
#endif