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2009-06-12 Vladimir Serbinenko <phcoder@gmail.com>

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* commands/i386/pc/drivemap_int13h.S: add more comments
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phcoder 2009-06-12 18:22:38 +00:00
parent 3daba08cfa
commit 3a1acfe21d
2 changed files with 7 additions and 2 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2009-06-12 Vladimir Serbinenko <phcoder@gmail.com>
* commands/i386/pc/drivemap_int13h.S: add more comments
2009-06-11 Pavel Roskin <proski@gnu.org> 2009-06-11 Pavel Roskin <proski@gnu.org>
* Makefile.in (uninstall): Uninstall manuals. * Makefile.in (uninstall): Uninstall manuals.

5
commands/i386/pc/drivemap_int13h.S
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@ -56,6 +56,7 @@ not_found:
pop %bx pop %bx
pop %ax pop %ax
/* If the call isn't ah=0x8 or ah=0x15 we must restore %dx. */
cmpb $0x8, %ah cmpb $0x8, %ah
jz norestore jz norestore
cmpb $0x15, %ah cmpb $0x15, %ah
@ -71,7 +72,7 @@ not_found:
mov %sp, %bp mov %sp, %bp
tail: tail:
/* Save new flags below %esp so the caller will recieve new flags. */
pushf pushf
pop %dx pop %dx
mov %dx, 8(%bp) mov %dx, 8(%bp)
@ -93,7 +94,7 @@ norestore:
push %bp push %bp
mov %sp, %bp mov %sp, %bp
/* Save %dx. */ /* Save %dx. So it won't be restored to original value. */
mov %dx, 2(%bp) mov %dx, 2(%bp)
jmp tail jmp tail