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- /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
- /*
- * Copyright (c) 1992, 1993 NeXT Computer, Inc.
- *
- * HISTORY
- *
- * Machine specific signal information.
- *
- * HISTORY
- * 25-MAR-97 Umesh Vaishampayan (umeshv@NeXT.com)
- * Ported from m98k and hppa.
- *
- * 13-Jan-92 Peter King (king) at NeXT Computer, Inc.
- * Filled out struct sigcontext to hold all registers.
- * Added regs_saved_t to specify which regs stored in the
- * sigcontext are valid.
- *
- * 09-Nov-92 Ben Fathi (benf) at NeXT, Inc.
- * Ported to m98k.
- *
- * 09-May-91 Mike DeMoney (mike) at NeXT, Inc.
- * Ported to m88k.
- */
-
- #ifndef _PPC_SIGNAL_
- #define _PPC_SIGNAL_ 1
-
- typedef int sig_atomic_t;
-
- /*
- * Machine-dependant flags used in sigvec call.
- */
- #define SV_SAVE_REGS 0x1000 /* Save all regs in sigcontext */
-
- /*
- * regs_saved_t -- Describes which registers beyond what the kernel cares
- * about are saved to and restored from this sigcontext.
- *
- * The default is REGS_SAVED_CALLER, only the caller saved registers
- * are saved. If the SV_SAVE_REGS flag was set when the signal
- * handler was registered with sigvec() then all the registers will be
- * saved in the sigcontext, and REGS_SAVED_ALL will be set. The C
- * library uses REGS_SAVED_NONE in order to quickly restore kernel
- * state during a longjmp().
- */
- typedef enum {
- REGS_SAVED_NONE, /* Only kernel managed regs restored */
- REGS_SAVED_CALLER, /* "Caller saved" regs: rpc, a0-a7,
- t0-t4, at, lk0-lk1, xt1-xt20,
- xr0-xr1 */
- REGS_SAVED_ALL /* All registers */
- } regs_saved_t;
-
-
- /*
- * 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 properly restore state if
- * a non-standard exit is performed.
- */
- struct sigcontext {
- int sc_onstack; /* sigstack state to restore */
- int sc_mask; /* signal mask to restore */
- int sc_ir; /* pc */
- int sc_psw; /* processor status word */
- int sc_sp; /* stack pointer if sc_regs == NULL */
- void *sc_regs; /* (kernel private) saved state */
- };
-
- #endif /* _PPC_SIGNAL_ */
-
-