diff options
Diffstat (limited to 'newlib/libc/sys/go32/getkey.s')
| -rw-r--r-- | newlib/libc/sys/go32/getkey.s | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/newlib/libc/sys/go32/getkey.s b/newlib/libc/sys/go32/getkey.s new file mode 100644 index 00000000000..876483ea946 --- /dev/null +++ b/newlib/libc/sys/go32/getkey.s @@ -0,0 +1,59 @@ +/* This is file GETKEY.S */ +/* +** Copyright (C) 1993 DJ Delorie, 24 Kirsten Ave, Rochester NH 03867-2954 +** +** This file is distributed under the terms listed in the document +** "copying.dj", available from DJ Delorie at the address above. +** A copy of "copying.dj" should accompany this file; if not, a copy +** should be available from where this file was obtained. This file +** may not be distributed without a verbatim copy of "copying.dj". +** +** This file is distributed WITHOUT ANY WARRANTY; without even the implied +** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + +Modified by J. Alan Eldridge, Liberty Brokerage, 77 Water St, NYC 10005 + +Changed handling of characters starting with 0xE0: + Now calls interrupt 16, function 10 + if leading byte was 0x00, ah = 0x01 + if leading byte was 0xE0, ah = 0x02 + + The main function is now called getxkey()... + getkey is provided to maintain compatibility with + already written software +*/ + + .globl _getxkey +_getxkey: + pushl %ebx + pushl %esi + pushl %edi + movb $0x10,%ah + int $0x16 + mov $1,%bl + cmpb $0,%al + je L0 + cmpb $0xE0,%al + jne L1 + inc %bl +L0: + movb %ah,%al + movb %bl,%ah + jmp L2 +L1: + movb $0,%ah +L2: + andl $0xffff,%eax + popl %edi + popl %esi + popl %ebx + ret + + .globl _getkey +_getkey: + call _getxkey + testb $0x02,%ah + jz L3 + movb $0x01,%ah +L3: + ret |