sigset_t change (part 3 of 5)

-----------------------------

By introducing a new sigframe so that the signal handler operates
on the new siginfo_t and on ucontext_t instead of sigcontext, we
now need two version of sendsig and sigreturn.

A flag in struct proc determines whether the process expects an
old sigframe or a new sigframe. The signal trampoline handles
which sigreturn to call. It does this by testing for a magic
cookie in the frame.

The alpha uses osigreturn to implement longjmp. This means that
osigreturn is not only used for compatibility with existing
binaries. To handle the new sigset_t, setjmp saves it in
sc_reserved (see NOTE).

the struct sigframe has been moved from frame.h to sigframe.h
to handle the complex header dependencies that was caused by
the new sigframe.

NOTE: For the i386, the size of jmp_buf has been increased to hold
      the new sigset_t. On the alpha this has been prevented by
      using sc_reserved in sigcontext.

1 files changed, 0 insertions, 38 deletions

diff --git a/sys/amd64/include/frame.h b/sys/amd64/include/frame.h
index b212d6c..634e690 100644
--- a/sys/amd64/include/frame.h
+++ b/sys/amd64/include/frame.h
@@ -40,8 +40,6 @@
 #ifndef _MACHINE_FRAME_H_
 #define _MACHINE_FRAME_H_ 1
 
-#include <sys/signal.h>
-
 /*
  * System stack frames.
  */
@@ -157,42 +155,6 @@ struct clockframe {
 	int	cf_ss;
 };
 
-/*
- * Signal frame, arguments passed to application signal handlers.
- */
-struct sigframe {
-	/* 
-	 * The first three members may be used by applications.
-	 */
-
-	register_t sf_signum;
-
-	/* 
-	 * Either 'int' for old-style FreeBSD handler or 'siginfo_t *'
-	 * pointing to sf_siginfo for SA_SIGINFO handlers. 
-	 */
-	register_t sf_arg2;
-
-	/* Points to sf_siginfo.si_sc. */
-	register_t sf_scp;
-
-	/* 
-	 * The following arguments are not constrained  by the 
-	 * function call protocol.
-	 * Applications are not supposed to access these members,
-	 * except using the pointers we provide in the first three
-	 * arguments. 
-	 */
-	char    *sf_addr;
-	union {
-		__siginfohandler_t *sf_action;
-		__sighandler_t     *sf_handler;
-	} sf_ahu;
-
-	/* In the SA_SIGINFO case, sf_arg2 points here. */
-	siginfo_t  sf_siginfo;
-};
-
 int	kdb_trap __P((int, int, struct trapframe *));
 extern  int (*pmath_emulate) __P((struct trapframe *));