diff options
| author | deischen <deischen@FreeBSD.org> | 2002-01-10 02:36:30 +0000 |
|---|---|---|
| committer | deischen <deischen@FreeBSD.org> | 2002-01-10 02:36:30 +0000 |
| commit | b11ad1474409669c5f7ff5cf0ea388966e0f1780 (patch) | |
| tree | 2a93239f79207893ae0f93f4ff6b447555b16b84 /sys/alpha | |
| parent | f70fe994fa68e0808a81a45ceac9ac601ec99b40 (diff) | |
| download | FreeBSD-src-b11ad1474409669c5f7ff5cf0ea388966e0f1780.zip FreeBSD-src-b11ad1474409669c5f7ff5cf0ea388966e0f1780.tar.gz | |
Use a spare slot in the machine context to identify the context format
and to inherently verify its validity. Alpha signal frames and trap
frames are different; this field identifies which format the context
is
Set the machine context format (signal frame) before copying it out
when sending a signal.
Approved by: -arch
Diffstat (limited to 'sys/alpha')
| -rw-r--r-- | sys/alpha/alpha/machdep.c | 1 | ||||
| -rw-r--r-- | sys/alpha/include/ucontext.h | 5 |
2 files changed, 5 insertions, 1 deletions
diff --git a/sys/alpha/alpha/machdep.c b/sys/alpha/alpha/machdep.c index 6680425..d43b841 100644 --- a/sys/alpha/alpha/machdep.c +++ b/sys/alpha/alpha/machdep.c @@ -1329,6 +1329,7 @@ sendsig(sig_t catcher, int sig, sigset_t *mask, u_long code) frame->tf_regs[FRAME_TRAPARG_A1]; sf.sf_uc.uc_mcontext.mc_regs[R_TRAPARG_A2] = frame->tf_regs[FRAME_TRAPARG_A2]; + sf.sf_uc.uc_mcontext.mc_format = __UC_REV0_SIGFRAME; /* * Allocate and validate space for the signal handler diff --git a/sys/alpha/include/ucontext.h b/sys/alpha/include/ucontext.h index 50b1418..3e88881 100644 --- a/sys/alpha/include/ucontext.h +++ b/sys/alpha/include/ucontext.h @@ -44,7 +44,10 @@ typedef struct __mcontext { unsigned long mc_fpcr; unsigned long mc_fp_control; long mc_ownedfp; - long __spare__[7]; +#define __UC_REV0_SIGFRAME 1 /* context is a signal frame */ +#define __UC_REV0_TRAPFRAME 2 /* context is a trap frame */ + long mc_format; + long __spare__[6]; } mcontext_t; #endif /* !_MACHINE_UCONTEXT_H_ */ |
