Don't peek into MD structures from MI code. The getcontext(3) and
setcontext(3) functions check the validify of the mcontext_t structs.
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@ -36,23 +36,15 @@ __FBSDID("$FreeBSD$");
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__weak_reference(__swapcontext, swapcontext);
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#warning "FIX __swapcontext on non i386 please!"
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int
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__swapcontext(ucontext_t *oucp, const ucontext_t *ucp)
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{
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int ret;
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#ifdef __i386__
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/* XXX PLEASE FIX! XXX */
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if ((oucp == NULL) ||
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(oucp->uc_mcontext.mc_len != sizeof(mcontext_t)) ||
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(ucp == NULL) ||
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(ucp->uc_mcontext.mc_len != sizeof(mcontext_t))) {
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if ((oucp == NULL) || (ucp == NULL)) {
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errno = EINVAL;
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return (-1);
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}
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#endif
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oucp->uc_flags &= ~UCF_SWAPPED;
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ret = getcontext(oucp);
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if ((ret == 0) && !(oucp->uc_flags & UCF_SWAPPED)) {
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