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      1 /*	$NetBSD: core_machdep.c,v 1.11 2020/07/06 11:05:05 rin Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
      5  * Copyright (C) 1995, 1996 TooLs GmbH.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by TooLs GmbH.
     19  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     28  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 __KERNEL_RCSID(0, "$NetBSD: core_machdep.c,v 1.11 2020/07/06 11:05:05 rin Exp $");
     36 
     37 #ifdef _KERNEL_OPT
     38 #include "opt_altivec.h"
     39 #endif
     40 
     41 #include <sys/param.h>
     42 #include <sys/core.h>
     43 #include <sys/exec.h>
     44 #include <sys/proc.h>
     45 #include <sys/systm.h>
     46 #include <sys/vnode.h>
     47 #include <sys/compat_stub.h>
     48 
     49 #include <sys/exec_aout.h>
     50 
     51 #include <uvm/uvm_extern.h>
     52 
     53 #if defined(ALTIVEC) || defined(PPC_HAVE_SPE)
     54 #include <powerpc/altivec.h>
     55 #endif
     56 #include <machine/fpu.h>
     57 #include <machine/pcb.h>
     58 
     59 /*
     60  * Write the machine-dependent part of a core dump.
     61  */
     62 int
     63 cpu_coredump(struct lwp *l, struct coredump_iostate *iocookie,
     64     struct core *chdr)
     65 {
     66 	struct coreseg cseg;
     67 	struct md_coredump md_core;
     68 	struct pcb * const pcb = lwp_getpcb(l);
     69 	int error;
     70 
     71 	if (iocookie == NULL) {
     72 		CORE_SETMAGIC(*chdr, COREMAGIC, MID_POWERPC, 0);
     73 		chdr->c_hdrsize = ALIGN(sizeof *chdr);
     74 		chdr->c_seghdrsize = ALIGN(sizeof cseg);
     75 		chdr->c_cpusize = sizeof md_core;
     76 		chdr->c_nseg++;
     77 		return 0;
     78 	}
     79 
     80 	md_core.frame = *l->l_md.md_utf;
     81 	pcu_save_all(l);
     82 	if (fpu_used_p(l)) {
     83 		md_core.fpstate = pcb->pcb_fpu;
     84 	} else
     85 		memset(&md_core.fpstate, 0, sizeof(md_core.fpstate));
     86 
     87 #if defined(ALTIVEC) || defined(PPC_HAVE_SPE)
     88 	if (vec_used_p(l)) {
     89 		md_core.vstate = pcb->pcb_vr;
     90 	} else
     91 #endif
     92 		memset(&md_core.vstate, 0, sizeof(md_core.vstate));
     93 
     94 	CORE_SETMAGIC(cseg, CORESEGMAGIC, MID_MACHINE, CORE_CPU);
     95 	cseg.c_addr = 0;
     96 	cseg.c_size = chdr->c_cpusize;
     97 
     98 	MODULE_HOOK_CALL(coredump_write_hook, (iocookie, UIO_SYSSPACE, &cseg,
     99 		    chdr->c_seghdrsize), ENOSYS, error);
    100 	if (error)
    101 		return error;
    102 
    103 	MODULE_HOOK_CALL(coredump_write_hook, (iocookie, UIO_SYSSPACE, &md_core,
    104 	    sizeof(md_core)), ENOSYS, error);
    105 
    106 	return error;
    107 }
    108