Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
57af6bd854
NetBSD/sys/arch/sparc/include/signal.h
bjh21 4be7a2dcf3 Add a new feature-test macro, _NETBSD_SOURCE. If this is defined 
by the application, all NetBSD interfaces are made visible, even
if some other feature-test macro (like _POSIX_C_SOURCE) is defined.
<sys/featuretest.h> defined _NETBSD_SOURCE if none of _ANSI_SOURCE,
_POSIX_C_SOURCE and _XOPEN_SOURCE is defined, so as to preserve
existing behaviour.

This has two major advantages:
+ Programs that require non-POSIX facilities but define _POSIX_C_SOURCE
  can trivially be overruled by putting -D_NETBSD_SOURCE in their CFLAGS.
+ It makes most of the #ifs simpler, in that they're all now ORs of the
  various macros, rather than having checks for (!defined(_ANSI_SOURCE) ||
  !defined(_POSIX_C_SOURCE) || !defined(_XOPEN_SOURCE)) all over the place.

I've tried not to change the semantics of the headers in any case where
_NETBSD_SOURCE wasn't defined, but there were some places where the
current semantics were clearly mad, and retaining them was harder than
correcting them.  In particular, I've mostly normalised things so that
_ANSI_SOURCE gets you the smallest set of stuff, then _POSIX_C_SOURCE,
_XOPEN_SOURCE and _NETBSD_SOURCE in that order.

Tested by building for vax, encouraged by thorpej, and uncontested in
tech-userlevel for a week.
2003-04-28 23:16:11 +00:00

174 lines
6.4 KiB
C
Raw Blame History

/* $NetBSD: signal.h,v 1.11 2003/04/28 23:16:24 bjh21 Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)signal.h 8.1 (Berkeley) 6/11/93
*/
#ifndef _SPARC_SIGNAL_H_
#define _SPARC_SIGNAL_H_
#include <sys/featuretest.h>
#ifndef _LOCORE
typedef int sig_atomic_t;
#endif
#if defined(_NETBSD_SOURCE)
#ifndef _LOCORE
/*
* Information pushed on stack when a signal is delivered.
* This is used by the kernel to restore state following
* execution of the signal handler. It is also made available
* to the handler to allow it to restore state properly if
* a non-standard exit is performed.
*
* All machines must have an sc_onstack and sc_mask.
*/
#if defined(__LIBC12_SOURCE__) || defined(_KERNEL)
struct sigcontext13 {
int sc_onstack; /* sigstack state to restore */
int sc_mask; /* signal mask to restore (old style) */
/* begin machine dependent portion */
long sc_sp; /* %sp to restore */
long sc_pc; /* pc to restore */
long sc_npc; /* npc to restore */
#ifdef __arch64__
long sc_tstate; /* tstate to restore */
#else
long sc_psr; /* psr to restore */
#endif
long sc_g1; /* %g1 to restore */
long sc_o0; /* %o0 to restore */
};
#endif /* __LIBC12_SOURCE__ || _KERNEL */
struct sigcontext {
int sc_onstack; /* sigstack state to restore */
int __sc_mask13; /* signal mask to restore (old style) */
/* begin machine dependent portion */
long sc_sp; /* %sp to restore */
long sc_pc; /* pc to restore */
long sc_npc; /* npc to restore */
#ifdef __arch64__
long sc_tstate; /* tstate to restore */
#else
long sc_psr; /* psr to restore */
#endif
long sc_g1; /* %g1 to restore */
long sc_o0; /* %o0 to restore */
sigset_t sc_mask; /* signal mask to restore (new style) */
};
#ifdef __arch64__
#define _MCONTEXT_TO_SIGCONTEXT_32_64(uc, sc) \
do { \
(sc)->sc_tstate = \
((uc)->uc_mcontext.__gregs[_REG_CCR] << TSTATE_CCR_SHIFT) | \
((uc)->uc_mcontext.__gregs[_REG_ASI] << TSTATE_ASI_SHIFT); \
} while (/*CONSTCOND*/0)
#define _SIGCONTEXT_TO_MCONTEXT_32_64(sc, uc) \
do { \
(uc)->uc_mcontext.__gregs[_REG_CCR] = \
((sc)->sc_tstate & TSTATE_CCR) >> TSTATE_CCR_SHIFT; \
(uc)->uc_mcontext.__gregs[_REG_ASI] = \
((sc)->sc_tstate & TSTATE_ASI) >> TSTATE_ASI_SHIFT; \
} while (/*CONSTCOND*/0)
#else /* ! __arch64__ */
#define _MCONTEXT_TO_SIGCONTEXT_32_64(uc, sc) \
do { \
(sc)->sc_psr = (uc)->uc_mcontext.__gregs[_REG_PSR]; \
} while (/*CONSTCOND*/0)
#define _SIGCONTEXT_TO_MCONTEXT_32_64(sc, uc) \
do { \
(uc)->uc_mcontext.__gregs[_REG_PSR] = (sc)->sc_psr; \
} while (/*CONSTCOND*/0)
#endif /* __arch64__ */
#define _MCONTEXT_TO_SIGCONTEXT(uc, sc) \
do { \
(sc)->sc_sp = (uc)->uc_mcontext.__gregs[_REG_O6]; \
(sc)->sc_pc = (uc)->uc_mcontext.__gregs[_REG_PC]; \
(sc)->sc_npc = (uc)->uc_mcontext.__gregs[_REG_nPC]; \
_MCONTEXT_TO_SIGCONTEXT_32_64((uc), (sc)); \
(sc)->sc_g1 = (uc)->uc_mcontext.__gregs[_REG_G1]; \
(sc)->sc_o0 = (uc)->uc_mcontext.__gregs[_REG_O0]; \
} while (/*CONSTCOND*/0)
#define _SIGCONTEXT_TO_MCONTEXT(sc, uc) \
do { \
(uc)->uc_mcontext.__gregs[_REG_O6] = (sc)->sc_sp; \
(uc)->uc_mcontext.__gregs[_REG_PC] = (sc)->sc_pc; \
(uc)->uc_mcontext.__gregs[_REG_nPC] = (sc)->sc_npc; \
_SIGCONTEXT_TO_MCONTEXT_32_64((sc), (uc)); \
(uc)->uc_mcontext.__gregs[_REG_G1] = (sc)->sc_g1; \
(uc)->uc_mcontext.__gregs[_REG_O0] = (sc)->sc_o0; \
} while (/*CONSTCOND*/0)
#else /* _LOCORE */
/* XXXXX These values don't work for _LP64 */
#define SC_SP_OFFSET 8
#define SC_PC_OFFSET 12
#define SC_NPC_OFFSET 16
#define SC_PSR_OFFSET 20
#define SC_G1_OFFSET 24
#define SC_O0_OFFSET 28
#endif /* _LOCORE */
/*
* `Code' arguments to signal handlers. The names, and the funny numbering.
* are defined so as to match up with what SunOS uses; I have no idea why
* they did the numbers that way, except maybe to match up with the 68881.
*/
#define FPE_INTOVF_TRAP 0x01 /* integer overflow */
#define FPE_INTDIV_TRAP 0x14 /* integer divide by zero */
#define FPE_FLTINEX_TRAP 0xc4 /* inexact */
#define FPE_FLTDIV_TRAP 0xc8 /* divide by zero */
#define FPE_FLTUND_TRAP 0xcc /* underflow */
#define FPE_FLTOPERR_TRAP 0xd0 /* operand error */
#define FPE_FLTOVF_TRAP 0xd4 /* overflow */
#endif /* _NETBSD_SOURCE */
#endif /* !_SPARC_SIGNAL_H_ */
Reference in New Issue View Git Blame Copy Permalink