Marcel Moolenaar c5c6b7b38e Re-introduction of sigcontext. ... struct sigcontext and ucontext_t/mcontext_t are defined in such a way that both (ie struct sigcontext and ucontext_t) can be passed on to sigreturn. The signal handler is still given a ucontext_t for maximum flexibility. For backward compatibility sigreturn restores the state for the alternate signal stack from sigcontext.sc_onstack and not from ucontext_t.uc_stack. A good way to determine which value the application has set and thus which value to use, is still open for discussion. NOTE: This change should only affect those binaries that use sigcontext and/or ucontext_t. In the source tree itself this is only doscmd. Recompilation is required for those applications. This commit also fixes a lot of style bugs without hopefully adding new ones. NOTE: struct sigaltstack.ss_size now has type size_t again. For some reason I changed that into unsigned int. Parts submitted by: bde sigaltstack bug found by: bde		1999-10-04 19:33:58 +00:00
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machdep.c	Re-introduction of sigcontext.	1999-10-04 19:33:58 +00:00
userconfig.c	Sync with sys/i386/i386/userconfig.c revision 1.159.	1999-09-22 11:59:14 +00:00