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| author | rnordier <rnordier@FreeBSD.org> | 1999-06-19 20:40:32 +0000 |
|---|---|---|
| committer | rnordier <rnordier@FreeBSD.org> | 1999-06-19 20:40:32 +0000 |
| commit | 5f25113ddbd88d3d21cd829269b9676c78bbaade (patch) | |
| tree | a9a3e7b012e8ff24d14dcd67ce9476248a2d56e1 /sys/boot/i386/mbr | |
| parent | 1daacd7eaafe3c64ff231732d0fdc13b805a586c (diff) | |
| download | FreeBSD-src-5f25113ddbd88d3d21cd829269b9676c78bbaade.zip FreeBSD-src-5f25113ddbd88d3d21cd829269b9676c78bbaade.tar.gz | |
Correct and clarify some comments.
Diffstat (limited to 'sys/boot/i386/mbr')
| -rw-r--r-- | sys/boot/i386/mbr/mbr.s | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/sys/boot/i386/mbr/mbr.s b/sys/boot/i386/mbr/mbr.s index 9bdb5d5..f849fb2 100644 --- a/sys/boot/i386/mbr/mbr.s +++ b/sys/boot/i386/mbr/mbr.s @@ -13,7 +13,7 @@ # purpose. # -# $Id: $ +# $Id: mbr.s,v 1.1.1.1 1999/05/24 22:36:24 rnordier Exp $ # Master boot record @@ -36,20 +36,20 @@ start: cld # String ops inc sti # Enable interrupts movwir(main-EXEC+LOAD,_si) # Source movwir(main,_di) # Destination - movwir(0x200-(main-start),_cx) # Word count + movwir(0x200-(main-start),_cx) # Byte count rep # Relocate movsb # code jmpnwi(main-LOAD+EXEC) # To relocated code -main: xorl %esi,%esi # No active found +main: xorl %esi,%esi # No active partition movwir(partbl,_bx) # Partition table - movb $0x4,%cl # Entries + movb $0x4,%cl # Number of entries main.1: cmpbr0(_ch,_bx_) # Null entry? je main.2 # Yes - jg err_pt # If bit 7 unset - testl %esi,%esi # Active found? + jg err_pt # If 0x1..0x7f + testl %esi,%esi # Active already found? jnz err_pt # Yes - movl %ebx,%esi # Keep place + movl %ebx,%esi # Point to active main.2: addb $0x10,%bl # Till loop main.1 # done testl %esi,%esi # Active found? |
