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| author | Michael Brown | 2007-07-09 20:02:41 +0200 |
|---|---|---|
| committer | Michael Brown | 2007-07-09 20:02:41 +0200 |
| commit | 8bce52d348c5fd740d00ccb826baf0f341e9885e (patch) | |
| tree | 47e087a27a474aebc4c2067b6ce67c6575516849 /src/arch/i386/interface/pcbios/int13.c | |
| parent | Remove xfer_ready() (it has been replaced by xfer_window()) (diff) | |
| download | ipxe-8bce52d348c5fd740d00ccb826baf0f341e9885e.tar.gz ipxe-8bce52d348c5fd740d00ccb826baf0f341e9885e.tar.xz ipxe-8bce52d348c5fd740d00ccb826baf0f341e9885e.zip | |
Set CF by default, clear on success (rather than clearing and setting
on failure).
Diffstat (limited to 'src/arch/i386/interface/pcbios/int13.c')
| -rw-r--r-- | src/arch/i386/interface/pcbios/int13.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/arch/i386/interface/pcbios/int13.c b/src/arch/i386/interface/pcbios/int13.c index b97d066c..aeb66ade 100644 --- a/src/arch/i386/interface/pcbios/int13.c +++ b/src/arch/i386/interface/pcbios/int13.c @@ -409,9 +409,10 @@ static void int13 ( struct i386_all_regs *ix86 ) { /* Negative status indicates an error */ if ( status < 0 ) { - ix86->flags |= CF; status = -status; DBG ( "INT13 failed with status %x\n", status ); + } else { + ix86->flags &= ~CF; } ix86->regs.ah = status; @@ -433,7 +434,8 @@ static void hook_int13 ( void ) { */ __asm__ __volatile__ ( TEXT16_CODE ( "\nint13_wrapper:\n\t" - "orb $0, %%al\n\t" /* clear CF and OF */ + "orb $0, %%al\n\t" /* clear OF */ + "stc\n\t" "pushl %0\n\t" /* call int13() */ "pushw %%cs\n\t" "call prot_call\n\t" |