Merge dump_machdep.c i386/amd64 under the x86 subtree.

Sponsored by:	Sandvine Incorporated
Tested by:	gianni

1 files changed, 0 insertions, 363 deletions

diff --git a/sys/i386/i386/dump_machdep.c b/sys/i386/i386/dump_machdep.c
deleted file mode 100644
index d0c6ba7..0000000
--- a/sys/i386/i386/dump_machdep.c
+++ /dev/null
@@ -1,363 +0,0 @@
-/*-
- * Copyright (c) 2002 Marcel Moolenaar
- * All rights reserved.
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/conf.h>
-#include <sys/cons.h>
-#include <sys/sysctl.h>
-#include <sys/kernel.h>
-#include <sys/kerneldump.h>
-#include <vm/vm.h>
-#include <vm/pmap.h>
-#include <machine/elf.h>
-#include <machine/md_var.h>
-
-CTASSERT(sizeof(struct kerneldumpheader) == 512);
-
-int do_minidump = 1;
-TUNABLE_INT("debug.minidump", &do_minidump);
-SYSCTL_INT(_debug, OID_AUTO, minidump, CTLFLAG_RW, &do_minidump, 0,
-    "Enable mini crash dumps");
-
-/*
- * Don't touch the first SIZEOF_METADATA bytes on the dump device. This
- * is to protect us from metadata and to protect metadata from us.
- */
-#define	SIZEOF_METADATA		(64*1024)
-
-#define	MD_ALIGN(x)	(((off_t)(x) + PAGE_MASK) & ~PAGE_MASK)
-#define	DEV_ALIGN(x)	(((off_t)(x) + (DEV_BSIZE-1)) & ~(DEV_BSIZE-1))
-
-struct md_pa {
-	vm_paddr_t md_start;
-	vm_paddr_t md_size;
-};
-
-typedef int callback_t(struct md_pa *, int, void *);
-
-static struct kerneldumpheader kdh;
-static off_t dumplo, fileofs;
-
-/* Handle buffered writes. */
-static char buffer[DEV_BSIZE];
-static size_t fragsz;
-
-/* 20 phys_avail entry pairs correspond to 10 md_pa's */
-static struct md_pa dump_map[10];
-
-static void
-md_pa_init(void)
-{
-	int n, idx;
-
-	bzero(dump_map, sizeof(dump_map));
-	for (n = 0; n < sizeof(dump_map) / sizeof(dump_map[0]); n++) {
-		idx = n * 2;
-		if (dump_avail[idx] == 0 && dump_avail[idx + 1] == 0)
-			break;
-		dump_map[n].md_start = dump_avail[idx];
-		dump_map[n].md_size = dump_avail[idx + 1] - dump_avail[idx];
-	}
-}
-
-static struct md_pa *
-md_pa_first(void)
-{
-
-	return (&dump_map[0]);
-}
-
-static struct md_pa *
-md_pa_next(struct md_pa *mdp)
-{
-
-	mdp++;
-	if (mdp->md_size == 0)
-		mdp = NULL;
-	return (mdp);
-}
-
-static int
-buf_write(struct dumperinfo *di, char *ptr, size_t sz)
-{
-	size_t len;
-	int error;
-
-	while (sz) {
-		len = DEV_BSIZE - fragsz;
-		if (len > sz)
-			len = sz;
-		bcopy(ptr, buffer + fragsz, len);
-		fragsz += len;
-		ptr += len;
-		sz -= len;
-		if (fragsz == DEV_BSIZE) {
-			error = dump_write(di, buffer, 0, dumplo,
-			    DEV_BSIZE);
-			if (error)
-				return error;
-			dumplo += DEV_BSIZE;
-			fragsz = 0;
-		}
-	}
-
-	return (0);
-}
-
-static int
-buf_flush(struct dumperinfo *di)
-{
-	int error;
-
-	if (fragsz == 0)
-		return (0);
-
-	error = dump_write(di, buffer, 0, dumplo, DEV_BSIZE);
-	dumplo += DEV_BSIZE;
-	fragsz = 0;
-	return (error);
-}
-
-#define PG2MB(pgs) ((pgs + (1 << 8) - 1) >> 8)
-
-static int
-cb_dumpdata(struct md_pa *mdp, int seqnr, void *arg)
-{
-	struct dumperinfo *di = (struct dumperinfo*)arg;
-	vm_paddr_t a, pa;
-	void *va;
-	uint64_t pgs;
-	size_t counter, sz, chunk;
-	int i, c, error, twiddle;
-	u_int maxdumppgs;
-
-	error = 0;	/* catch case in which chunk size is 0 */
-	counter = 0;	/* Update twiddle every 16MB */
-	twiddle = 0;
-	va = 0;
-	pgs = mdp->md_size / PAGE_SIZE;
-	pa = mdp->md_start;
-	maxdumppgs = min(di->maxiosize / PAGE_SIZE, MAXDUMPPGS);
-	if (maxdumppgs == 0)	/* seatbelt */
-		maxdumppgs = 1;
-
-	printf("  chunk %d: %lldMB (%lld pages)", seqnr, PG2MB(pgs), pgs);
-
-	while (pgs) {
-		chunk = pgs;
-		if (chunk > maxdumppgs)
-			chunk = maxdumppgs;
-		sz = chunk << PAGE_SHIFT;
-		counter += sz;
-		if (counter >> 24) {
-			printf(" %lld", PG2MB(pgs));
-			counter &= (1<<24) - 1;
-		}
-		for (i = 0; i < chunk; i++) {
-			a = pa + i * PAGE_SIZE;
-			va = pmap_kenter_temporary(trunc_page(a), i);
-		}
-		error = dump_write(di, va, 0, dumplo, sz);
-		if (error)
-			break;
-		dumplo += sz;
-		pgs -= chunk;
-		pa += sz;
-
-		/* Check for user abort. */
-		c = cncheckc();
-		if (c == 0x03)
-			return (ECANCELED);
-		if (c != -1)
-			printf(" (CTRL-C to abort) ");
-	}
-	printf(" ... %s\n", (error) ? "fail" : "ok");
-	return (error);
-}
-
-static int
-cb_dumphdr(struct md_pa *mdp, int seqnr, void *arg)
-{
-	struct dumperinfo *di = (struct dumperinfo*)arg;
-	Elf_Phdr phdr;
-	uint64_t size;
-	int error;
-
-	size = mdp->md_size;
-	bzero(&phdr, sizeof(phdr));
-	phdr.p_type = PT_LOAD;
-	phdr.p_flags = PF_R;			/* XXX */
-	phdr.p_offset = fileofs;
-	phdr.p_vaddr = mdp->md_start;
-	phdr.p_paddr = mdp->md_start;
-	phdr.p_filesz = size;
-	phdr.p_memsz = size;
-	phdr.p_align = PAGE_SIZE;
-
-	error = buf_write(di, (char*)&phdr, sizeof(phdr));
-	fileofs += phdr.p_filesz;
-	return (error);
-}
-
-static int
-cb_size(struct md_pa *mdp, int seqnr, void *arg)
-{
-	uint64_t *sz = (uint64_t*)arg;
-
-	*sz += (uint64_t)mdp->md_size;
-	return (0);
-}
-
-static int
-foreach_chunk(callback_t cb, void *arg)
-{
-	struct md_pa *mdp;
-	int error, seqnr;
-
-	seqnr = 0;
-	mdp = md_pa_first();
-	while (mdp != NULL) {
-		error = (*cb)(mdp, seqnr++, arg);
-		if (error)
-			return (-error);
-		mdp = md_pa_next(mdp);
-	}
-	return (seqnr);
-}
-
-void
-dumpsys(struct dumperinfo *di)
-{
-	Elf_Ehdr ehdr;
-	uint64_t dumpsize;
-	off_t hdrgap;
-	size_t hdrsz;
-	int error;
-
-	if (do_minidump) {
-		minidumpsys(di);
-		return;
-	}
-	bzero(&ehdr, sizeof(ehdr));
-	ehdr.e_ident[EI_MAG0] = ELFMAG0;
-	ehdr.e_ident[EI_MAG1] = ELFMAG1;
-	ehdr.e_ident[EI_MAG2] = ELFMAG2;
-	ehdr.e_ident[EI_MAG3] = ELFMAG3;
-	ehdr.e_ident[EI_CLASS] = ELF_CLASS;
-#if BYTE_ORDER == LITTLE_ENDIAN
-	ehdr.e_ident[EI_DATA] = ELFDATA2LSB;
-#else
-	ehdr.e_ident[EI_DATA] = ELFDATA2MSB;
-#endif
-	ehdr.e_ident[EI_VERSION] = EV_CURRENT;
-	ehdr.e_ident[EI_OSABI] = ELFOSABI_STANDALONE;	/* XXX big picture? */
-	ehdr.e_type = ET_CORE;
-	ehdr.e_machine = EM_386;
-	ehdr.e_phoff = sizeof(ehdr);
-	ehdr.e_flags = 0;
-	ehdr.e_ehsize = sizeof(ehdr);
-	ehdr.e_phentsize = sizeof(Elf_Phdr);
-	ehdr.e_shentsize = sizeof(Elf_Shdr);
-
-	md_pa_init();
-
-	/* Calculate dump size. */
-	dumpsize = 0L;
-	ehdr.e_phnum = foreach_chunk(cb_size, &dumpsize);
-	hdrsz = ehdr.e_phoff + ehdr.e_phnum * ehdr.e_phentsize;
-	fileofs = MD_ALIGN(hdrsz);
-	dumpsize += fileofs;
-	hdrgap = fileofs - DEV_ALIGN(hdrsz);
-
-	/* Determine dump offset on device. */
-	if (di->mediasize < SIZEOF_METADATA + dumpsize + sizeof(kdh) * 2) {
-		error = ENOSPC;
-		goto fail;
-	}
-	dumplo = di->mediaoffset + di->mediasize - dumpsize;
-	dumplo -= sizeof(kdh) * 2;
-
-	mkdumpheader(&kdh, KERNELDUMPMAGIC, KERNELDUMP_I386_VERSION, dumpsize, di->blocksize);
-
-	printf("Dumping %llu MB (%d chunks)\n", (long long)dumpsize >> 20,
-	    ehdr.e_phnum);
-
-	/* Dump leader */
-	error = dump_write(di, &kdh, 0, dumplo, sizeof(kdh));
-	if (error)
-		goto fail;
-	dumplo += sizeof(kdh);
-
-	/* Dump ELF header */
-	error = buf_write(di, (char*)&ehdr, sizeof(ehdr));
-	if (error)
-		goto fail;
-
-	/* Dump program headers */
-	error = foreach_chunk(cb_dumphdr, di);
-	if (error < 0)
-		goto fail;
-	buf_flush(di);
-
-	/*
-	 * All headers are written using blocked I/O, so we know the
-	 * current offset is (still) block aligned. Skip the alignement
-	 * in the file to have the segment contents aligned at page
-	 * boundary. We cannot use MD_ALIGN on dumplo, because we don't
-	 * care and may very well be unaligned within the dump device.
-	 */
-	dumplo += hdrgap;
-
-	/* Dump memory chunks (updates dumplo) */
-	error = foreach_chunk(cb_dumpdata, di);
-	if (error < 0)
-		goto fail;
-
-	/* Dump trailer */
-	error = dump_write(di, &kdh, 0, dumplo, sizeof(kdh));
-	if (error)
-		goto fail;
-
-	/* Signal completion, signoff and exit stage left. */
-	dump_write(di, NULL, 0, 0, 0);
-	printf("\nDump complete\n");
-	return;
-
- fail:
-	if (error < 0)
-		error = -error;
-
-	if (error == ECANCELED)
-		printf("\nDump aborted\n");
-	else if (error == ENOSPC)
-		printf("\nDump failed. Partition too small.\n");
-	else
-		printf("\n** DUMP FAILED (ERROR %d) **\n", error);
-}