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fixed case where SS != USER_DS (fixes dosemu DPMI emulation)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@256 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-06-21 13:14:12 +00:00
parent 970a87a6bb
commit a52c757c9f
1 changed files with 14 additions and 13 deletions
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21
linux-user/signal.c
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@ -517,10 +517,10 @@ setup_sigcontext(struct target_sigcontext *sc, struct target_fpstate *fpstate,
{
int err = 0;
err |= __put_user(env->segs[R_GS], (unsigned int *)&sc->gs);
err |= __put_user(env->segs[R_FS], (unsigned int *)&sc->fs);
err |= __put_user(env->segs[R_ES], (unsigned int *)&sc->es);
err |= __put_user(env->segs[R_DS], (unsigned int *)&sc->ds);
err |= __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs);
err |= __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs);
err |= __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es);
err |= __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds);
err |= __put_user(env->regs[R_EDI], &sc->edi);
err |= __put_user(env->regs[R_ESI], &sc->esi);
err |= __put_user(env->regs[R_EBP], &sc->ebp);
@ -532,10 +532,10 @@ setup_sigcontext(struct target_sigcontext *sc, struct target_fpstate *fpstate,
err |= __put_user(env->exception_index, &sc->trapno);
err |= __put_user(env->error_code, &sc->err);
err |= __put_user(env->eip, &sc->eip);
err |= __put_user(env->segs[R_CS], (unsigned int *)&sc->cs);
err |= __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs);
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);
err |= __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss);
cpu_x86_fsave(env, (void *)fpstate, 1);
fpstate->status = fpstate->sw;
@ -544,7 +544,7 @@ setup_sigcontext(struct target_sigcontext *sc, struct target_fpstate *fpstate,
/* non-iBCS2 extensions.. */
err |= __put_user(mask, &sc->oldmask);
err |= __put_user(env->cr2, &sc->cr2);
err |= __put_user(env->cr[2], &sc->cr2);
return err;
}
@ -567,12 +567,13 @@ get_sigframe(struct emulated_sigaction *ka, CPUX86State *env, size_t frame_size)
}
/* This is the legacy signal stack switching. */
else if ((regs->xss & 0xffff) != __USER_DS &&
!(ka->sa.sa_flags & SA_RESTORER) &&
else
#endif
if ((env->segs[R_SS].selector & 0xffff) != __USER_DS &&
!(ka->sa.sa_flags & TARGET_SA_RESTORER) &&
ka->sa.sa_restorer) {
esp = (unsigned long) ka->sa.sa_restorer;
}
#endif
return (void *)((esp - frame_size) & -8ul);
}