forked from pool/syslinux
62 lines
1.3 KiB
Diff
62 lines
1.3 KiB
Diff
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diff --git a/core/ui.inc b/core/ui.inc
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index 0a4bb56..97945c9 100644
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--- a/core/ui.inc
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+++ b/core/ui.inc
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@@ -529,30 +529,36 @@ kernel_corrupt: mov si,err_notkernel
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; which can be adjusted by the caller based on the corresponding
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; master variables; on return they're updated.
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;
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-; This cheats. If we say "no timeout" we actually get a timeout of
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-; 7.5 years.
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-;
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getchar_timeout:
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call vgashowcursor
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call reset_idle
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.loop:
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- push word [__jiffies]
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+ push dword [__jiffies]
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call pollchar
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jnz .got_char
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call do_idle
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- pop ax
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- cmp ax,[__jiffies] ; Has the timer advanced?
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+ pop eax
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+ sub eax,[__jiffies] ; Has the timer advanced?
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je .loop
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- dec dword [ThisKbdTo]
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- jz .timeout
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- dec dword [ThisTotalTo]
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- jnz .loop
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+ ; more than one tick may have passed, keep the diff in eax
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+ neg eax
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+
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+ cmp dword [ThisKbdTo],0
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+ jz .chk_total
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+ sub [ThisKbdTo],eax
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+ jbe .timeout
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+
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+.chk_total:
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+ cmp dword [ThisTotalTo],0
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+ jz .loop
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+ sub [ThisTotalTo],eax
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+ ja .loop
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.timeout:
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; Timeout!!!!
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- pop cx ; Discard return address
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+ pop ecx ; Discard return address
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call vgahidecursor
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mov si,Ontimeout ; Copy ontimeout command
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mov di,command_line
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@@ -561,7 +567,7 @@ getchar_timeout:
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jmp command_done
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.got_char:
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- pop cx ; Discard
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+ pop ecx ; Discard
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call getchar
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call vgahidecursor
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ret
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