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author | Marcel Moolenaar <marcel@FreeBSD.org> | 1999-09-29 15:06:27 +0000 |
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committer | Marcel Moolenaar <marcel@FreeBSD.org> | 1999-09-29 15:06:27 +0000 |
commit | 91078fca0cb2bb1d02316eeb7d2dd5ab422f00e4 (patch) | |
tree | 3e581f8215e3a25ccde812ff415444a7bdbabaf0 /sys/amd64/include/frame.h | |
parent | 2c42a1460203c03abbbcefec9fc4d720423a36f9 (diff) | |
download | src-91078fca0cb2bb1d02316eeb7d2dd5ab422f00e4.tar.gz src-91078fca0cb2bb1d02316eeb7d2dd5ab422f00e4.zip |
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.
Notes
Notes:
svn path=/head/; revision=51792
Diffstat (limited to 'sys/amd64/include/frame.h')
-rw-r--r-- | sys/amd64/include/frame.h | 38 |
1 files changed, 0 insertions, 38 deletions
diff --git a/sys/amd64/include/frame.h b/sys/amd64/include/frame.h index b212d6c7b77f..634e6909e908 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 *)); |