K 10
svn:author
V 3
imp
K 8
svn:date
V 27
2021-07-21T16:19:41.619806Z
K 7
svn:log
V 899
Fix pmbr issues > 2TB

These issues have low impact because they require precise circumstances
to trigger one of them. The disk must be > 2 TiB in size and either:
- The primary GPT header is dammaged.
- The freebsd-boot partiton is located farther than the first 2 TiB of
  the disc and one of its sectors takes place at a lba value that makes
  the higher 32 bits of this very value change.
Errors and corrections folow:
- decl and incl don't affect CF, so replace with subl/addl $1
- repe uses %cx, so move size to it with movw
- moving a 64-bit value with %cx of 2 (should be 4) so addresses
  > 2TB will work.

PR:			233180
Reviewed by:		imp@ (applied patch using description in bug)
Differential Revision:	https://reviews.freebsd.org/D31100

(cherry picked from commit 0ca9f1d4a3b772036309fb1c14262ec77c674c5d)

Git Hash:   3cd395b3b9d2ab70d589d27203904238f138442f
Git Author: kmachine@free.fr
END