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save FPU state in signal handler

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@201 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-05-29 20:06:27 +00:00
parent 4304763ba2
commit ed2dcdf68e
1 changed files with 11 additions and 32 deletions
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43
linux-user/signal.c
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@ -536,15 +536,12 @@ setup_sigcontext(struct target_sigcontext *sc, struct target_fpstate *fpstate,
err |= __put_user(env->eflags, &sc->eflags);
err |= __put_user(env->regs[R_ESP], &sc->esp_at_signal);
err |= __put_user(env->segs[R_SS], (unsigned int *)&sc->ss);
#if 0
tmp = save_i387(fpstate);
if (tmp < 0)
err = 1;
else
err |= __put_user(tmp ? fpstate : NULL, &sc->fpstate);
#else
err |= __put_user(0, &sc->fpstate);
#endif
cpu_x86_fsave(env, (void *)fpstate, 1);
fpstate->status = fpstate->sw;
err |= __put_user(0xffff, &fpstate->magic);
err |= __put_user(fpstate, &sc->fpstate);
/* non-iBCS2 extensions.. */
err |= __put_user(mask, &sc->oldmask);
err |= __put_user(env->cr2, &sc->cr2);
@ -721,25 +718,6 @@ restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc, int *peax)
{
unsigned int err = 0;
#define COPY(x) err |= __get_user(regs->x, &sc->x)
#define COPY_SEG(seg) \
{ unsigned short tmp; \
err |= __get_user(tmp, &sc->seg); \
regs->x##seg = tmp; }
#define COPY_SEG_STRICT(seg) \
{ unsigned short tmp; \
err |= __get_user(tmp, &sc->seg); \
regs->x##seg = tmp|3; }
#define GET_SEG(seg) \
{ unsigned short tmp; \
err |= __get_user(tmp, &sc->seg); \
loadsegment(seg,tmp); }
cpu_x86_load_seg(env, R_GS, lduw(&sc->gs));
cpu_x86_load_seg(env, R_FS, lduw(&sc->fs));
cpu_x86_load_seg(env, R_ES, lduw(&sc->es));
@ -764,17 +742,18 @@ restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc, int *peax)
// regs->orig_eax = -1; /* disable syscall checks */
}
#if 0
{
struct _fpstate * buf;
err |= __get_user(buf, &sc->fpstate);
buf = (void *)ldl(&sc->fpstate);
if (buf) {
#if 0
if (verify_area(VERIFY_READ, buf, sizeof(*buf)))
goto badframe;
err |= restore_i387(buf);
#endif
cpu_x86_frstor(env, (void *)buf, 1);
}
}
#endif
*peax = ldl(&sc->eax);
return err;
#if 0