Author: kevans
Date: Thu Oct 24 03:01:40 2019
New Revision: 353983
URL: https://svnweb.freebsd.org/changeset/base/353983

Log:
  MFC r345066, r347219-r347220, r347223, r347388-r347389, r347391, r347393,
  r347553, r348040
  
  r345066:
  stand: Improve some debugging experience
  
  Some of these files using <FOO>_DEBUG defined a DEBUG() macro to serve as a
  debug-printf. -DDEBUG is useful to enable some debugging output across
  multiple ELF/common parts, so switch the DEBUG-as-printf macros over to
  something more like DPRINTF that is more commonly used for this kind of
  thing and less likely to conflict.
  
  userboot/elf64_freebsd debugging also assumed %llx for uint64; use PRIx64
  instead.
  
  r347219:
  loader: use safer DPRINTF body for non-debug case
  
  r347220:
  loader: bcache code does not need to check argument for free()
  
  r347223:
  command_bcache() does not use argv
  
  Therefore mark argv __unused.
  
  r347388:
  loader: implement proper 8 char tab stops
  
  The current console code is printing out 8 spaces for tab, calculate
  the amount of spaces based on tab stops.
  
  r347389:
  loader: ptable_print() needs two tabs sometimes
  
  Since the partition/slice names do vary in length, check the length
  of the fixed part of the line against 3 * 8, if the lenth is less than
  3 tab stops, print out extra tab.
  
  use snprintf() instead of sprintf.
  
  r347391:
  loader: no-TERM_EMU is broken now
  
  If TERM_EMU is not defined, we do not have curx variable. Use conout mode
  for efi and expose get_pos() for i386.
  
  r347393:
  loader: use DPRINTF in biosdisk.c and define safe DPRINTF
  
  r345066 did miss biosdisk.c.
  
  Also define DPRINTF as ((void)0) for case we do not want debug printouts.
  
  r347553:
  loader: fix memory handling errors in module.c
  
  file_loadraw():
  check for file_alloc() and strdup() results.
  we leak 'name'.
  
  mod_load() does leak 'filename'.
  
  mod_loadkld() does not need to check fp, file_discard() does check.
  
  r348040:
  stand: TARGET_ARCH is spelled MACHINE_ARCH in Makefiles

Modified:
  stable/12/stand/common/bcache.c
  stable/12/stand/common/disk.c
  stable/12/stand/common/interp_forth.c
  stable/12/stand/common/module.c
  stable/12/stand/common/part.c
  stable/12/stand/efi/libefi/efi_console.c
  stable/12/stand/i386/libi386/biosdisk.c
  stable/12/stand/i386/libi386/vidconsole.c
  stable/12/stand/powerpc/Makefile
  stable/12/stand/userboot/userboot/elf64_freebsd.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/stand/common/bcache.c
==============================================================================
--- stable/12/stand/common/bcache.c     Thu Oct 24 02:53:07 2019        
(r353982)
+++ stable/12/stand/common/bcache.c     Thu Oct 24 03:01:40 2019        
(r353983)
@@ -44,9 +44,9 @@ __FBSDID("$FreeBSD$");
 /* #define BCACHE_DEBUG */
 
 #ifdef BCACHE_DEBUG
-# define DEBUG(fmt, args...)   printf("%s: " fmt "\n" , __func__ , ## args)
+# define DPRINTF(fmt, args...) printf("%s: " fmt "\n" , __func__ , ## args)
 #else
-# define DEBUG(fmt, args...)
+# define DPRINTF(fmt, args...) ((void)0)
 #endif
 
 struct bcachectl
@@ -384,7 +384,7 @@ bcache_strategy(void *devdata, int rw, daddr_t blk, si
     /* bypass large requests, or when the cache is inactive */
     if (bc == NULL ||
        ((size * 2 / bcache_blksize) > bcache_nblks)) {
-       DEBUG("bypass %zu from %qu", size / bcache_blksize, blk);
+       DPRINTF("bypass %zu from %qu", size / bcache_blksize, blk);
        bcache_bypasses++;
        rw &= F_MASK;
        return (dd->dv_strategy(dd->dv_devdata, rw, blk, size, buf, rsize));
@@ -441,10 +441,8 @@ static void
 bcache_free_instance(struct bcache *bc)
 {
     if (bc != NULL) {
-       if (bc->bcache_ctl)
-           free(bc->bcache_ctl);
-       if (bc->bcache_data)
-           free(bc->bcache_data);
+       free(bc->bcache_ctl);
+       free(bc->bcache_data);
        free(bc);
     }
 }
@@ -459,7 +457,7 @@ bcache_insert(struct bcache *bc, daddr_t blkno)
     
     cand = BHASH(bc, blkno);
 
-    DEBUG("insert blk %llu -> %u # %d", blkno, cand, bcache_bcount);
+    DPRINTF("insert blk %llu -> %u # %d", blkno, cand, bcache_bcount);
     bc->bcache_ctl[cand].bc_blkno = blkno;
     bc->bcache_ctl[cand].bc_count = bcache_bcount++;
 }
@@ -476,7 +474,7 @@ bcache_invalidate(struct bcache *bc, daddr_t blkno)
     if (bc->bcache_ctl[i].bc_blkno == blkno) {
        bc->bcache_ctl[i].bc_count = -1;
        bc->bcache_ctl[i].bc_blkno = -1;
-       DEBUG("invalidate blk %llu", blkno);
+       DPRINTF("invalidate blk %llu", blkno);
     }
 }
 
@@ -484,7 +482,7 @@ bcache_invalidate(struct bcache *bc, daddr_t blkno)
 COMMAND_SET(bcachestat, "bcachestat", "get disk block cache stats", 
command_bcache);
 
 static int
-command_bcache(int argc, char *argv[])
+command_bcache(int argc, char *argv[] __unused)
 {
     if (argc != 1) {
        command_errmsg = "wrong number of arguments";

Modified: stable/12/stand/common/disk.c
==============================================================================
--- stable/12/stand/common/disk.c       Thu Oct 24 02:53:07 2019        
(r353982)
+++ stable/12/stand/common/disk.c       Thu Oct 24 03:01:40 2019        
(r353983)
@@ -38,9 +38,9 @@ __FBSDID("$FreeBSD$");
 #include "disk.h"
 
 #ifdef DISK_DEBUG
-# define DEBUG(fmt, args...)   printf("%s: " fmt "\n" , __func__ , ## args)
+# define DPRINTF(fmt, args...) printf("%s: " fmt "\n" , __func__ , ## args)
 #else
-# define DEBUG(fmt, args...)
+# define DPRINTF(fmt, args...) ((void)0)
 #endif
 
 struct open_disk {
@@ -75,7 +75,7 @@ display_size(uint64_t size, u_int sectorsize)
                size /= 1024;
                unit = 'M';
        }
-       sprintf(buf, "%4ld%cB", (long)size, unit);
+       snprintf(buf, sizeof(buf), "%4ld%cB", (long)size, unit);
        return (buf);
 }
 
@@ -118,11 +118,24 @@ ptable_print(void *arg, const char *pname, const struc
        od = (struct open_disk *)pa->dev->dd.d_opendata;
        sectsize = od->sectorsize;
        partsize = part->end - part->start + 1;
-       sprintf(line, "  %s%s: %s\t%s\n", pa->prefix, pname,
-           parttype2str(part->type),
-           pa->verbose ? display_size(partsize, sectsize) : "");
+       snprintf(line, sizeof(line), "  %s%s: %s", pa->prefix, pname,
+           parttype2str(part->type));
        if (pager_output(line))
-               return 1;
+               return (1);
+
+       if (pa->verbose) {
+               /* Emit extra tab when the line is shorter than 3 tab stops */
+               if (strlen(line) < 24)
+                       (void) pager_output("\t");
+
+               snprintf(line, sizeof(line), "\t%s",
+                   display_size(partsize, sectsize));
+               if (pager_output(line))
+                       return (1);
+       }
+       if (pager_output("\n"))
+               return (1);
+
        res = 0;
        if (part->type == PART_FREEBSD) {
                /* Open slice with BSD label */
@@ -140,7 +153,8 @@ ptable_print(void *arg, const char *pname, const struc
                        dev.d_offset = part->start;
                        table = ptable_open(&dev, partsize, sectsize, ptblread);
                        if (table != NULL) {
-                               sprintf(line, "  %s%s", pa->prefix, pname);
+                               snprintf(line, sizeof(line), "  %s%s",
+                                   pa->prefix, pname);
                                bsd.dev = pa->dev;
                                bsd.prefix = line;
                                bsd.verbose = pa->verbose;
@@ -229,13 +243,13 @@ disk_open(struct disk_devdesc *dev, uint64_t mediasize
        int rc, slice, partition;
 
        if (sectorsize == 0) {
-               DEBUG("unknown sector size");
+               DPRINTF("unknown sector size");
                return (ENXIO);
        }
        rc = 0;
        od = (struct open_disk *)malloc(sizeof(struct open_disk));
        if (od == NULL) {
-               DEBUG("no memory");
+               DPRINTF("no memory");
                return (ENOMEM);
        }
        dev->dd.d_opendata = od;
@@ -256,14 +270,14 @@ disk_open(struct disk_devdesc *dev, uint64_t mediasize
        slice = dev->d_slice;
        partition = dev->d_partition;
 
-       DEBUG("%s unit %d, slice %d, partition %d => %p",
+       DPRINTF("%s unit %d, slice %d, partition %d => %p",
            disk_fmtdev(dev), dev->dd.d_unit, dev->d_slice, dev->d_partition, 
od);
 
        /* Determine disk layout. */
        od->table = ptable_open(&partdev, mediasize / sectorsize, sectorsize,
            ptblread);
        if (od->table == NULL) {
-               DEBUG("Can't read partition table");
+               DPRINTF("Can't read partition table");
                rc = ENXIO;
                goto out;
        }
@@ -319,7 +333,7 @@ disk_open(struct disk_devdesc *dev, uint64_t mediasize
                table = ptable_open(dev, part.end - part.start + 1,
                    od->sectorsize, ptblread);
                if (table == NULL) {
-                       DEBUG("Can't read BSD label");
+                       DPRINTF("Can't read BSD label");
                        rc = ENXIO;
                        goto out;
                }
@@ -347,12 +361,12 @@ out:
                if (od->table != NULL)
                        ptable_close(od->table);
                free(od);
-               DEBUG("%s could not open", disk_fmtdev(dev));
+               DPRINTF("%s could not open", disk_fmtdev(dev));
        } else {
                /* Save the slice and partition number to the dev */
                dev->d_slice = slice;
                dev->d_partition = partition;
-               DEBUG("%s offset %lld => %p", disk_fmtdev(dev),
+               DPRINTF("%s offset %lld => %p", disk_fmtdev(dev),
                    (long long)dev->d_offset, od);
        }
        return (rc);
@@ -364,7 +378,7 @@ disk_close(struct disk_devdesc *dev)
        struct open_disk *od;
 
        od = (struct open_disk *)dev->dd.d_opendata;
-       DEBUG("%s closed => %p", disk_fmtdev(dev), od);
+       DPRINTF("%s closed => %p", disk_fmtdev(dev), od);
        ptable_close(od->table);
        free(od);
        return (0);

Modified: stable/12/stand/common/interp_forth.c
==============================================================================
--- stable/12/stand/common/interp_forth.c       Thu Oct 24 02:53:07 2019        
(r353982)
+++ stable/12/stand/common/interp_forth.c       Thu Oct 24 03:01:40 2019        
(r353983)
@@ -39,9 +39,9 @@ INTERP_DEFINE("4th");
 /* #define BFORTH_DEBUG */
 
 #ifdef BFORTH_DEBUG
-#define        DEBUG(fmt, args...)     printf("%s: " fmt "\n" , __func__ , ## 
args)
+#define        DPRINTF(fmt, args...)   printf("%s: " fmt "\n" , __func__ , ## 
args)
 #else
-#define        DEBUG(fmt, args...)
+#define        DPRINTF(fmt, args...)   ((void)0)
 #endif
 
 /*
@@ -128,7 +128,7 @@ bf_command(FICL_VM *vm)
                        vmUpdateTib(vm, tail + len);
                }
        }
-       DEBUG("cmd '%s'", line);
+       DPRINTF("cmd '%s'", line);
 
        command_errmsg = command_errbuf;
        command_errbuf[0] = 0;
@@ -310,7 +310,7 @@ bf_run(const char *line)
         */
        result = ficlExec(bf_vm, __DECONST(char *, line));
 
-       DEBUG("ficlExec '%s' = %d", line, result);
+       DPRINTF("ficlExec '%s' = %d", line, result);
        switch (result) {
        case VM_OUTOFTEXT:
        case VM_ABORTQ:

Modified: stable/12/stand/common/module.c
==============================================================================
--- stable/12/stand/common/module.c     Thu Oct 24 02:53:07 2019        
(r353982)
+++ stable/12/stand/common/module.c     Thu Oct 24 03:01:40 2019        
(r353983)
@@ -499,7 +499,14 @@ file_loadraw(const char *fname, char *type, int insert
 
        /* Looks OK so far; create & populate control structure */
        fp = file_alloc();
-       fp->f_name = strdup(name);
+       if (fp == NULL) {
+               snprintf(command_errbuf, sizeof (command_errbuf),
+                   "no memory to load %s", name);
+               free(name);
+               close(fd);
+               return (NULL);
+       }
+       fp->f_name = name;
        fp->f_type = strdup(type);
        fp->f_args = NULL;
        fp->f_metadata = NULL;
@@ -507,6 +514,13 @@ file_loadraw(const char *fname, char *type, int insert
        fp->f_addr = loadaddr;
        fp->f_size = laddr - loadaddr;
 
+       if (fp->f_type == NULL) {
+               snprintf(command_errbuf, sizeof (command_errbuf),
+                   "no memory to load %s", name);
+               free(name);
+               close(fd);
+               return (NULL);
+       }
        /* recognise space consumption */
        loadaddr = laddr;
 
@@ -552,6 +566,7 @@ mod_load(char *modname, struct mod_depend *verinfo, in
                return (ENOENT);
        }
        err = mod_loadkld(filename, argc, argv);
+       free(filename);
        return (err);
 }
 
@@ -607,7 +622,7 @@ mod_loadkld(const char *kldname, int argc, char *argv[
                snprintf(command_errbuf, sizeof(command_errbuf),
                  "don't know how to load module '%s'", filename);
        }
-       if (err && fp)
+       if (err)
                file_discard(fp);
        free(filename);
        return (err);

Modified: stable/12/stand/common/part.c
==============================================================================
--- stable/12/stand/common/part.c       Thu Oct 24 02:53:07 2019        
(r353982)
+++ stable/12/stand/common/part.c       Thu Oct 24 03:01:40 2019        
(r353983)
@@ -44,9 +44,9 @@ __FBSDID("$FreeBSD$");
 #include <uuid.h>
 
 #ifdef PART_DEBUG
-#define        DEBUG(fmt, args...) printf("%s: " fmt "\n", __func__, ## args)
+#define        DPRINTF(fmt, args...) printf("%s: " fmt "\n", __func__, ## args)
 #else
-#define        DEBUG(fmt, args...)
+#define        DPRINTF(fmt, args...)   ((void)0)
 #endif
 
 #ifdef LOADER_GPT_SUPPORT
@@ -155,34 +155,34 @@ gpt_checkhdr(struct gpt_hdr *hdr, uint64_t lba_self, u
        uint32_t sz, crc;
 
        if (memcmp(hdr->hdr_sig, GPT_HDR_SIG, sizeof(hdr->hdr_sig)) != 0) {
-               DEBUG("no GPT signature");
+               DPRINTF("no GPT signature");
                return (NULL);
        }
        sz = le32toh(hdr->hdr_size);
        if (sz < 92 || sz > sectorsize) {
-               DEBUG("invalid GPT header size: %d", sz);
+               DPRINTF("invalid GPT header size: %d", sz);
                return (NULL);
        }
        crc = le32toh(hdr->hdr_crc_self);
        hdr->hdr_crc_self = 0;
        if (crc32(hdr, sz) != crc) {
-               DEBUG("GPT header's CRC doesn't match");
+               DPRINTF("GPT header's CRC doesn't match");
                return (NULL);
        }
        hdr->hdr_crc_self = crc;
        hdr->hdr_revision = le32toh(hdr->hdr_revision);
        if (hdr->hdr_revision < GPT_HDR_REVISION) {
-               DEBUG("unsupported GPT revision %d", hdr->hdr_revision);
+               DPRINTF("unsupported GPT revision %d", hdr->hdr_revision);
                return (NULL);
        }
        hdr->hdr_lba_self = le64toh(hdr->hdr_lba_self);
        if (hdr->hdr_lba_self != lba_self) {
-               DEBUG("self LBA doesn't match");
+               DPRINTF("self LBA doesn't match");
                return (NULL);
        }
        hdr->hdr_lba_alt = le64toh(hdr->hdr_lba_alt);
        if (hdr->hdr_lba_alt == hdr->hdr_lba_self) {
-               DEBUG("invalid alternate LBA");
+               DPRINTF("invalid alternate LBA");
                return (NULL);
        }
        hdr->hdr_entries = le32toh(hdr->hdr_entries);
@@ -190,7 +190,7 @@ gpt_checkhdr(struct gpt_hdr *hdr, uint64_t lba_self, u
        if (hdr->hdr_entries == 0 ||
            hdr->hdr_entsz < sizeof(struct gpt_ent) ||
            sectorsize % hdr->hdr_entsz != 0) {
-               DEBUG("invalid entry size or number of entries");
+               DPRINTF("invalid entry size or number of entries");
                return (NULL);
        }
        hdr->hdr_lba_start = le64toh(hdr->hdr_lba_start);
@@ -214,7 +214,7 @@ gpt_checktbl(const struct gpt_hdr *hdr, uint8_t *tbl, 
                /* Check CRC only when buffer size is enough for table. */
                if (hdr->hdr_crc_table !=
                    crc32(tbl, hdr->hdr_entries * hdr->hdr_entsz)) {
-                       DEBUG("GPT table's CRC doesn't match");
+                       DPRINTF("GPT table's CRC doesn't match");
                        return (-1);
                }
        }
@@ -310,7 +310,7 @@ ptable_gptread(struct ptable *table, void *dev, diskre
                table->type = PTABLE_NONE;
                goto out;
        }
-       DEBUG("GPT detected");
+       DPRINTF("GPT detected");
        size = MIN(hdr.hdr_entries * hdr.hdr_entsz,
            MAXTBLSZ * table->sectorsize);
 
@@ -346,7 +346,7 @@ ptable_gptread(struct ptable *table, void *dev, diskre
                entry->flags = le64toh(ent->ent_attr);
                memcpy(&entry->type.gpt, &ent->ent_type, sizeof(uuid_t));
                STAILQ_INSERT_TAIL(&table->entries, entry, entry);
-               DEBUG("new GPT partition added");
+               DPRINTF("new GPT partition added");
        }
 out:
        free(buf);
@@ -402,7 +402,7 @@ ptable_ebrread(struct ptable *table, void *dev, diskre
        buf = malloc(table->sectorsize);
        if (buf == NULL)
                return (table);
-       DEBUG("EBR detected");
+       DPRINTF("EBR detected");
        for (i = 0; i < MAXEBRENTRIES; i++) {
 #if 0  /* Some BIOSes return an incorrect number of sectors */
                if (offset >= table->sectors)
@@ -430,7 +430,7 @@ ptable_ebrread(struct ptable *table, void *dev, diskre
                entry->flags = dp[0].dp_flag;
                entry->type.mbr = dp[0].dp_typ;
                STAILQ_INSERT_TAIL(&table->entries, entry, entry);
-               DEBUG("new EBR partition added");
+               DPRINTF("new EBR partition added");
                if (dp[1].dp_typ == 0)
                        break;
                offset = e1->part.start + le32toh(dp[1].dp_start);
@@ -470,14 +470,14 @@ ptable_bsdread(struct ptable *table, void *dev, diskre
        int i;
 
        if (table->sectorsize < sizeof(struct disklabel)) {
-               DEBUG("Too small sectorsize");
+               DPRINTF("Too small sectorsize");
                return (table);
        }
        buf = malloc(table->sectorsize);
        if (buf == NULL)
                return (table);
        if (dread(dev, buf, 1, 1) != 0) {
-               DEBUG("read failed");
+               DPRINTF("read failed");
                ptable_close(table);
                table = NULL;
                goto out;
@@ -487,15 +487,15 @@ ptable_bsdread(struct ptable *table, void *dev, diskre
            le32toh(dl->d_magic2) != DISKMAGIC)
                goto out;
        if (le32toh(dl->d_secsize) != table->sectorsize) {
-               DEBUG("unsupported sector size");
+               DPRINTF("unsupported sector size");
                goto out;
        }
        dl->d_npartitions = le16toh(dl->d_npartitions);
        if (dl->d_npartitions > 20 || dl->d_npartitions < 8) {
-               DEBUG("invalid number of partitions");
+               DPRINTF("invalid number of partitions");
                goto out;
        }
-       DEBUG("BSD detected");
+       DPRINTF("BSD detected");
        part = &dl->d_partitions[0];
        raw_offset = le32toh(part[RAW_PART].p_offset);
        for (i = 0; i < dl->d_npartitions; i++, part++) {
@@ -513,7 +513,7 @@ ptable_bsdread(struct ptable *table, void *dev, diskre
                entry->part.index = i; /* starts from zero */
                entry->type.bsd = part->p_fstype;
                STAILQ_INSERT_TAIL(&table->entries, entry, entry);
-               DEBUG("new BSD partition added");
+               DPRINTF("new BSD partition added");
        }
        table->type = PTABLE_BSD;
 out:
@@ -556,7 +556,7 @@ ptable_vtoc8read(struct ptable *table, void *dev, disk
        if (buf == NULL)
                return (table);
        if (dread(dev, buf, 1, 0) != 0) {
-               DEBUG("read failed");
+               DPRINTF("read failed");
                ptable_close(table);
                table = NULL;
                goto out;
@@ -566,20 +566,20 @@ ptable_vtoc8read(struct ptable *table, void *dev, disk
        for (i = sum = 0; i < sizeof(struct vtoc8); i += sizeof(sum))
                sum ^= be16dec(buf + i);
        if (sum != 0) {
-               DEBUG("incorrect checksum");
+               DPRINTF("incorrect checksum");
                goto out;
        }
        if (be16toh(dl->nparts) != VTOC8_NPARTS) {
-               DEBUG("invalid number of entries");
+               DPRINTF("invalid number of entries");
                goto out;
        }
        sectors = be16toh(dl->nsecs);
        heads = be16toh(dl->nheads);
        if (sectors * heads == 0) {
-               DEBUG("invalid geometry");
+               DPRINTF("invalid geometry");
                goto out;
        }
-       DEBUG("VTOC8 detected");
+       DPRINTF("VTOC8 detected");
        for (i = 0; i < VTOC8_NPARTS; i++) {
                dl->part[i].tag = be16toh(dl->part[i].tag);
                if (i == VTOC_RAW_PART ||
@@ -595,7 +595,7 @@ ptable_vtoc8read(struct ptable *table, void *dev, disk
                entry->part.index = i; /* starts from zero */
                entry->type.vtoc8 = dl->part[i].tag;
                STAILQ_INSERT_TAIL(&table->entries, entry, entry);
-               DEBUG("new VTOC8 partition added");
+               DPRINTF("new VTOC8 partition added");
        }
        table->type = PTABLE_VTOC8;
 out:
@@ -619,7 +619,7 @@ ptable_iso9660read(struct ptable *table, void *dev, di
                return (table);
                
        if (dread(dev, buf, 1, cdb2devb(16)) != 0) {
-               DEBUG("read failed");
+               DPRINTF("read failed");
                ptable_close(table);
                table = NULL;
                goto out;
@@ -663,7 +663,7 @@ ptable_open(void *dev, uint64_t sectors, uint16_t sect
                return (NULL);
        /* First, read the MBR. */
        if (dread(dev, buf, 1, DOSBBSECTOR) != 0) {
-               DEBUG("read failed");
+               DPRINTF("read failed");
                goto out;
        }
 
@@ -703,7 +703,7 @@ ptable_open(void *dev, uint64_t sectors, uint16_t sect
        /* Check the MBR magic. */
        if (buf[DOSMAGICOFFSET] != 0x55 ||
            buf[DOSMAGICOFFSET + 1] != 0xaa) {
-               DEBUG("magic sequence not found");
+               DPRINTF("magic sequence not found");
 #if defined(LOADER_GPT_SUPPORT)
                /* There is no PMBR, check that we have backup GPT */
                table->type = PTABLE_GPT;
@@ -715,13 +715,13 @@ ptable_open(void *dev, uint64_t sectors, uint16_t sect
        dp = (struct dos_partition *)(buf + DOSPARTOFF);
        for (i = 0, count = 0; i < NDOSPART; i++) {
                if (dp[i].dp_flag != 0 && dp[i].dp_flag != 0x80) {
-                       DEBUG("invalid partition flag %x", dp[i].dp_flag);
+                       DPRINTF("invalid partition flag %x", dp[i].dp_flag);
                        goto out;
                }
 #ifdef LOADER_GPT_SUPPORT
                if (dp[i].dp_typ == DOSPTYP_PMBR) {
                        table->type = PTABLE_GPT;
-                       DEBUG("PMBR detected");
+                       DPRINTF("PMBR detected");
                }
 #endif
                if (dp[i].dp_typ != 0)
@@ -731,9 +731,9 @@ ptable_open(void *dev, uint64_t sectors, uint16_t sect
        if (table->type == PTABLE_GPT && count > 1) {
                if (dp[1].dp_typ != DOSPTYP_HFS) {
                        table->type = PTABLE_NONE;
-                       DEBUG("Incorrect PMBR, ignore it");
+                       DPRINTF("Incorrect PMBR, ignore it");
                } else {
-                       DEBUG("Bootcamp detected");
+                       DPRINTF("Bootcamp detected");
                }
        }
 #ifdef LOADER_GPT_SUPPORT
@@ -744,7 +744,7 @@ ptable_open(void *dev, uint64_t sectors, uint16_t sect
 #endif
 #ifdef LOADER_MBR_SUPPORT
        /* Read MBR. */
-       DEBUG("MBR detected");
+       DPRINTF("MBR detected");
        table->type = PTABLE_MBR;
        for (i = has_ext = 0; i < NDOSPART; i++) {
                if (dp[i].dp_typ == 0)
@@ -770,7 +770,7 @@ ptable_open(void *dev, uint64_t sectors, uint16_t sect
                entry->flags = dp[i].dp_flag;
                entry->type.mbr = dp[i].dp_typ;
                STAILQ_INSERT_TAIL(&table->entries, entry, entry);
-               DEBUG("new MBR partition added");
+               DPRINTF("new MBR partition added");
        }
        if (has_ext) {
                table = ptable_ebrread(table, dev, dread);

Modified: stable/12/stand/efi/libefi/efi_console.c
==============================================================================
--- stable/12/stand/efi/libefi/efi_console.c    Thu Oct 24 02:53:07 2019        
(r353982)
+++ stable/12/stand/efi/libefi/efi_console.c    Thu Oct 24 03:01:40 2019        
(r353983)
@@ -135,11 +135,13 @@ efi_cons_rawputchar(int c)
        UINTN x, y;
        conout->QueryMode(conout, conout->Mode->Mode, &x, &y);
 
-       if (c == '\t')
-               /* XXX lame tab expansion */
-               for (i = 0; i < 8; i++)
+       if (c == '\t') {
+               int n;
+
+               n = 8 - ((conout->Mode->CursorColumn + 8) % 8);
+               for (i = 0; i < n; i++)
                        efi_cons_rawputchar(' ');
-       else {
+       } else {
 #ifndef        TERM_EMU
                if (c == '\n')
                        efi_cons_efiputchar('\r');

Modified: stable/12/stand/i386/libi386/biosdisk.c
==============================================================================
--- stable/12/stand/i386/libi386/biosdisk.c     Thu Oct 24 02:53:07 2019        
(r353982)
+++ stable/12/stand/i386/libi386/biosdisk.c     Thu Oct 24 03:01:40 2019        
(r353983)
@@ -65,9 +65,9 @@ __FBSDID("$FreeBSD$");
 #define        CDMAJOR         15
 
 #ifdef DISK_DEBUG
-#define        DEBUG(fmt, args...)     printf("%s: " fmt "\n", __func__, ## 
args)
+#define        DPRINTF(fmt, args...)   printf("%s: " fmt "\n", __func__, ## 
args)
 #else
-#define        DEBUG(fmt, args...)
+#define        DPRINTF(fmt, args...)   ((void)0)
 #endif
 
 struct specification_packet {
@@ -218,12 +218,12 @@ bd_bios2unit(int biosdev)
        bdinfo_t *bd;
        int i, unit;
 
-       DEBUG("looking for bios device 0x%x", biosdev);
+       DPRINTF("looking for bios device 0x%x", biosdev);
        for (i = 0; bdi[i] != NULL; i++) {
                unit = 0;
                STAILQ_FOREACH(bd, bdi[i], bd_link) {
                        if (bd->bd_unit == biosdev) {
-                               DEBUG("bd unit %d is BIOS device 0x%x", unit,
+                               DPRINTF("bd unit %d is BIOS device 0x%x", unit,
                                    bd->bd_unit);
                                return (unit);
                        }
@@ -620,7 +620,7 @@ bd_int13probe(bdinfo_t *bd)
        if (bd->bd_sectors == 0)
                bd->bd_sectors = (uint64_t)bd->bd_cyl * bd->bd_hds * bd->bd_sec;
 
-       DEBUG("unit 0x%x geometry %d/%d/%d\n", bd->bd_unit, bd->bd_cyl,
+       DPRINTF("unit 0x%x geometry %d/%d/%d\n", bd->bd_unit, bd->bd_cyl,
            bd->bd_hds, bd->bd_sec);
 
        return (true);
@@ -919,7 +919,7 @@ bd_realstrategy(void *devdata, int rw, daddr_t dblk, s
                return (EIO);
        }
 
-       DEBUG("open_disk %p", dev);
+       DPRINTF("open_disk %p", dev);
 
        offset = dblk * BIOSDISK_SECSIZE;
        dblk = offset / bd->bd_sectorsize;
@@ -932,7 +932,7 @@ bd_realstrategy(void *devdata, int rw, daddr_t dblk, s
         * while translating block count to bytes.
         */
        if (size > INT_MAX) {
-               DEBUG("too large I/O: %zu bytes", size);
+               DPRINTF("too large I/O: %zu bytes", size);
                return (EIO);
        }
 
@@ -972,7 +972,7 @@ bd_realstrategy(void *devdata, int rw, daddr_t dblk, s
        if (dblk + blks >= d_offset + disk_blocks) {
                blks = d_offset + disk_blocks - dblk;
                size = blks * bd->bd_sectorsize;
-               DEBUG("short I/O %d", blks);
+               DPRINTF("short I/O %d", blks);
        }
 
        bio_size = min(BIO_BUFFER_SIZE, size);
@@ -997,7 +997,7 @@ bd_realstrategy(void *devdata, int rw, daddr_t dblk, s
 
                switch (rw & F_MASK) {
                case F_READ:
-                       DEBUG("read %d from %lld to %p", x, dblk, buf);
+                       DPRINTF("read %d from %lld to %p", x, dblk, buf);
                        bsize = bd->bd_sectorsize * x - blkoff;
                        if (rest < bsize)
                                bsize = rest;
@@ -1010,7 +1010,7 @@ bd_realstrategy(void *devdata, int rw, daddr_t dblk, s
                        bcopy(bbuf + blkoff, buf, bsize);
                        break;
                case F_WRITE :
-                       DEBUG("write %d from %lld to %p", x, dblk, buf);
+                       DPRINTF("write %d from %lld to %p", x, dblk, buf);
                        if (blkoff != 0) {
                                /*
                                 * We got offset to sector, read 1 sector to
@@ -1259,7 +1259,7 @@ bd_getdev(struct i386_devdesc *d)
                return (-1);
 
        biosdev = bd_unit2bios(d);
-       DEBUG("unit %d BIOS device %d", dev->dd.d_unit, biosdev);
+       DPRINTF("unit %d BIOS device %d", dev->dd.d_unit, biosdev);
        if (biosdev == -1)                      /* not a BIOS device */
                return (-1);
 
@@ -1312,6 +1312,6 @@ bd_getdev(struct i386_devdesc *d)
        }
 
        rootdev = MAKEBOOTDEV(major, slice, unit, partition);
-       DEBUG("dev is 0x%x\n", rootdev);
+       DPRINTF("dev is 0x%x\n", rootdev);
        return (rootdev);
 }

Modified: stable/12/stand/i386/libi386/vidconsole.c
==============================================================================
--- stable/12/stand/i386/libi386/vidconsole.c   Thu Oct 24 02:53:07 2019        
(r353982)
+++ stable/12/stand/i386/libi386/vidconsole.c   Thu Oct 24 03:01:40 2019        
(r353983)
@@ -49,6 +49,8 @@ static int    vidc_ischar(void);
 
 static int     vidc_started;
 
+void           get_pos(int *x, int *y);
+
 #ifdef TERM_EMU
 #define MAXARGS                8
 #define DEFAULT_FGCOLOR        7
@@ -57,7 +59,6 @@ static int    vidc_started;
 void           end_term(void);
 void           bail_out(int c);
 void           vidc_term_emu(int c);
-void           get_pos(int *x, int *y);
 void           curs_move(int *_x, int *_y, int x, int y);
 void           write_char(int c, int fg, int bg);
 void           scroll_up(int rows, int fg, int bg);
@@ -136,11 +137,18 @@ vidc_rawputchar(int c)
 {
     int                i;
 
-    if (c == '\t')
-       /* lame tab expansion */
-       for (i = 0; i < 8; i++)
+    if (c == '\t') {
+       int n;
+#ifndef TERM_EMU
+       int curx, cury;
+
+       get_pos(&curx, %cury);
+#endif
+
+       n = 8 - ((curx + 8) % 8);
+       for (i = 0; i < n; i++)
            vidc_rawputchar(' ');
-    else {
+    } else {
 #ifndef TERM_EMU
         vidc_biosputchar(c);
 #else
@@ -188,8 +196,6 @@ vidc_rawputchar(int c)
     }
 }
 
-#ifdef TERM_EMU
-
 /* Get cursor position on the screen. Result is in edx. Sets
  * curx and cury appropriately.
  */
@@ -205,6 +211,8 @@ get_pos(int *x, int *y)
     *x = v86.edx & 0x00ff;
     *y = (v86.edx & 0xff00) >> 8;
 }
+
+#ifdef TERM_EMU
 
 /* Move cursor to x rows and y cols (0-based). */
 void

Modified: stable/12/stand/powerpc/Makefile
==============================================================================
--- stable/12/stand/powerpc/Makefile    Thu Oct 24 02:53:07 2019        
(r353982)
+++ stable/12/stand/powerpc/Makefile    Thu Oct 24 03:01:40 2019        
(r353983)
@@ -6,7 +6,7 @@ NO_OBJ=t
 
 SUBDIR.yes=            boot1.chrp ofw uboot
 
-.if "${TARGET_ARCH}" == "powerpc64"
+.if "${MACHINE_ARCH}" == "powerpc64"
 SUBDIR.${MK_FDT}+=     kboot
 .endif
 

Modified: stable/12/stand/userboot/userboot/elf64_freebsd.c
==============================================================================
--- stable/12/stand/userboot/userboot/elf64_freebsd.c   Thu Oct 24 02:53:07 
2019        (r353982)
+++ stable/12/stand/userboot/userboot/elf64_freebsd.c   Thu Oct 24 03:01:40 
2019        (r353983)
@@ -31,6 +31,9 @@ __FBSDID("$FreeBSD$");
 #include <sys/param.h>
 #include <sys/exec.h>
 #include <sys/linker.h>
+#ifdef DEBUG
+#include <machine/_inttypes.h>
+#endif
 #include <string.h>
 #include <i386/include/bootinfo.h>
 #include <machine/elf.h>
@@ -136,7 +139,7 @@ elf64_exec(struct preloaded_file *fp)
        }
 
 #ifdef DEBUG
-       printf("Start @ %#llx ...\n", ehdr->e_entry);
+       printf("Start @ %#"PRIx64" ...\n", ehdr->e_entry);
 #endif
 
        dev_cleanup();
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