1 files changed, 0 insertions, 96 deletions
diff --git a/qemu/roms/seabios/scripts/vgafixup.py b/qemu/roms/seabios/scripts/vgafixup.py
deleted file mode 100644
index 2053cd5d7..000000000
--- a/qemu/roms/seabios/scripts/vgafixup.py
+++ /dev/null
@@ -1,96 +0,0 @@
-#!/usr/bin/env python
-# Work around x86emu bugs by replacing problematic instructions.
-#
-# Copyright (C) 2012  Kevin O'Connor <kevin@koconnor.net>
-#
-# This file may be distributed under the terms of the GNU GPLv3 license.
-
-# The x86emu code widely used in Linux distributions when running Xorg
-# in vesamode is known to have issues with "retl", "leavel", "entryl",
-# "leal", and some variants of "calll".  This code modifies those
-# instructions that are known to be generated by gcc to avoid
-# triggering the x86emu bugs.
-
-# It is also known that the Windows vgabios emulator has issues with
-# addressing negative offsets to the %esp register.  That has been
-# worked around by not using the gcc parameter "-fomit-frame-pointer"
-# when compiling.
-
-import sys, re
-
-# leal parameter regex - example string: -3(%edx,%eax,8), %eax
-re_leal = re.compile(
-    r'^\s*(?P<offset>[^(]*?)\s*'
-    r'\(\s*(?P<base>[^,)]*?)\s*(?:,\s*(?P<index>[^,)]*?)\s*)?'
-    r'(?:,\s*(?P<scale>[^,)]*?)\s*)?\)\s*'
-    r',\s*(?P<dest>.*?)\s*$')
-
-# Find an alternate set of instructions for a given "leal" instruction
-def handle_leal(sline):
-    m = re_leal.match(sline[5:])
-    if m is None or m.group('index') == '%esp':
-        print("Unable to fixup leal instruction: %s" % (sline,))
-        sys.exit(-1)
-    offset, base, index, scale, dest = m.group(
-        'offset', 'base', 'index', 'scale', 'dest')
-    if dest == '%esp':
-        # If destination is %esp then just use 16bit leaw instead
-        return 'leaw %s\n' % (sline[5:].replace('%e', '%'),)
-    if not scale:
-        scale = '1'
-    scale = {1: 0, 2: 1, 4: 2, 8: 3}[int(scale, 0)]
-    # Try to rearrange arguments to simplify 'base' (to improve code gen)
-    if not scale and base == index:
-        base, index, scale = '', index, 1
-    elif not index or (not scale and base in (dest, '%esp') and index != dest):
-        base, index, scale = index, base, 0
-    # Produce instructions to calculate "leal"
-    insns = ['pushfw']
-    if base != dest:
-        # Calculate "leal" directly in dest register
-        if index != dest:
-            insns.insert(0, 'movl %s, %s' % (index, dest))
-        if scale:
-            insns.append('shll $%d, %s' % (scale, dest))
-        if base:
-            if base == '%esp':
-                offset += '+2'
-            insns.append('addl %s, %s' % (base, dest))
-    elif base == index:
-        # Use "imull" method
-        insns.append('imull $%d, %s' % ((1<<scale)+1, dest))
-    else:
-        # Backup/restore index register and do scaling in index register
-        insns.append('pushl %s' % (index,))
-        insns.append('shll $%d, %s' % (scale, index))
-        insns.append('addl %s, %s' % (index, dest))
-        insns.append('popl %s' % (index,))
-    if offset and offset != '0':
-        insns.append('addl $%s, %s' % (offset, dest))
-    insns.append('popfw\n')
-    return ' ; '.join(insns)
-
-def main():
-    infilename, outfilename = sys.argv[1:]
-    infile = open(infilename, 'r')
-    out = []
-    for line in infile:
-        sline = line.strip()
-        if sline == 'ret':
-            out.append('retw $2\n')
-        elif sline == 'leave':
-            out.append('movl %ebp, %esp ; popl %ebp\n')
-        elif sline.startswith('call'):
-            out.append('pushw %ax ; callw' + sline[4:] + '\n')
-        elif sline.startswith('leal'):
-            out.append(handle_leal(sline))
-            #print("-> %s\n   %s" % (sline, out[-1].strip()))
-        else:
-            out.append(line)
-    infile.close()
-    outfile = open(outfilename, 'w')
-    outfile.write(''.join(out))
-    outfile.close()
-
-if __name__ == '__main__':
-    main()