For the moment, use the same code that we use in the pmax port to generate

core files.  This may change again as the gdb port progresses, but is my
best current guess.  Core files generated by OpenBSD/arc with this
change are now known by the file command as being core files.

diff --git a/sys/arch/arc/arc/vm_machdep.c b/sys/arch/arc/arc/vm_machdep.c
index d27e6b7..4fc85e4 100644 (file)
--- a/sys/arch/arc/arc/vm_machdep.c
+++ b/sys/arch/arc/arc/vm_machdep.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: vm_machdep.c,v 1.2 1996/08/26 11:11:57 pefo Exp $     */
+/*     $OpenBSD: vm_machdep.c,v 1.3 1996/12/09 00:13:49 imp Exp $      */
 /*
  * Copyright (c) 1988 University of Utah.
  * Copyright (c) 1992, 1993
@@ -39,11 +39,9 @@
  * from: Utah Hdr: vm_machdep.c 1.21 91/04/06
  *
  *     from: @(#)vm_machdep.c  8.3 (Berkeley) 1/4/94
- *      $Id: vm_machdep.c,v 1.2 1996/08/26 11:11:57 pefo Exp $
+ *      $Id: vm_machdep.c,v 1.3 1996/12/09 00:13:49 imp Exp $
  */
 
-
-
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/proc.h>
@@ -51,6 +49,8 @@
 #include <sys/buf.h>
 #include <sys/vnode.h>
 #include <sys/user.h>
+#include <sys/core.h>
+#include <sys/exec.h>
 
 #include <vm/vm.h>
 #include <vm/vm_kern.h>
@@ -181,14 +181,22 @@ void cpu_exit(p)
 /*
  * Dump the machine specific header information at the start of a core dump.
  */
-cpu_coredump(p, vp, cred, core)
+cpu_coredump(p, vp, cred, chdr)
        struct proc *p;
        struct vnode *vp;
        struct ucred *cred;
-       struct core *core;
+       struct core *chdr;
 {
+       int error;
+       /*register struct user *up = p->p_addr;*/
+       struct coreseg cseg;
        extern struct proc *machFPCurProcPtr;
 
+       CORE_SETMAGIC(*chdr, COREMAGIC, MID_MIPS, 0);
+       chdr->c_hdrsize = ALIGN(sizeof(*chdr));
+       chdr->c_seghdrsize = ALIGN(sizeof(cseg));
+       chdr->c_cpusize = sizeof (p -> p_addr -> u_pcb.pcb_regs);
+
        /*
         * Copy floating point state from the FP chip if this process
         * has state stored there.
@@ -196,9 +204,27 @@ cpu_coredump(p, vp, cred, core)
        if (p == machFPCurProcPtr)
                MachSaveCurFPState(p);
 
-       return (vn_rdwr(UIO_WRITE, vp, (caddr_t)p->p_addr, ctob(UPAGES),
-           (off_t)0, UIO_SYSSPACE, IO_NODELOCKED|IO_UNIT, cred, (int *)NULL,
-           p));
+       CORE_SETMAGIC(cseg, CORESEGMAGIC, MID_MIPS, CORE_CPU);
+       cseg.c_addr = 0;
+       cseg.c_size = chdr->c_cpusize;
+
+       error = vn_rdwr(UIO_WRITE, vp, (caddr_t)&cseg, chdr->c_seghdrsize,
+           (off_t)chdr->c_hdrsize, UIO_SYSSPACE,
+           IO_NODELOCKED|IO_UNIT, cred, (int *)NULL, p);
+       if (error)
+               return error;
+
+       error = vn_rdwr(UIO_WRITE, vp,
+                       (caddr_t)(&(p -> p_addr -> u_pcb.pcb_regs)),
+                       (off_t)chdr -> c_cpusize,
+                       (off_t)(chdr->c_hdrsize + chdr->c_seghdrsize),
+                       UIO_SYSSPACE, IO_NODELOCKED|IO_UNIT,
+                       cred, (int *)NULL, p);
+
+       if (!error)
+               chdr->c_nseg++;
+
+       return error;
 }
 
 /*