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| author | H. Peter Anvin <hpa@zytor.com> | 2008-02-25 15:02:04 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-02-25 15:02:04 -0800 |
| commit | 303d00101fe01c3da23e9d99d9cc15532e43a698 (patch) | |
| tree | bde26b5230de62f8f6cb163812a65e3859e25178 /mbr | |
| parent | f88d07e8da591b285a164b770d5bd1373556d3d2 (diff) | |
| download | syslinux-303d00101fe01c3da23e9d99d9cc15532e43a698.tar.gz | |
gptmbr: move advancing %bx into read_sector
Move the advancing of %bx into read_sector, saving 3 bytes.
Diffstat (limited to 'mbr')
| -rw-r--r-- | mbr/gptmbr.S | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/mbr/gptmbr.S b/mbr/gptmbr.S index 7b5fb97a..b042cbf3 100644 --- a/mbr/gptmbr.S +++ b/mbr/gptmbr.S @@ -35,10 +35,10 @@ sectors = (stack-8) secpercyl = (stack-12) /* Partition table header here */ -phdr = _start + 512 +phdr = 0x7e00 /* Above the boot sector and stack */ /* Partition table sector here */ /* To handle > 32K we need to play segment tricks... */ -psec = 0x8000 /* Above the boot sector and stack */ +psec = _phdr + 512 /* BootGUID */ bootguid = _start + 0x1a8 @@ -135,11 +135,9 @@ next: movl (phdr+0x72),%eax movl (phdr+0x76),%edx - movw $psec,%bx pushw %bx get_ptab: call read_sector - addw $512,%bx call inc64 loopw get_ptab @@ -258,6 +256,7 @@ read_common: addw $16, %sp /* Drop DAPA */ popal jc disk_error + addw $512, %bx /* POint to the next buffer */ ret disk_error: |