diff options
Diffstat (limited to '')
-rwxr-xr-x | src/VBox/Additions/3D/win/VBoxICD/icd_forwarders.py | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/src/VBox/Additions/3D/win/VBoxICD/icd_forwarders.py b/src/VBox/Additions/3D/win/VBoxICD/icd_forwarders.py new file mode 100755 index 00000000..c9ffe2f5 --- /dev/null +++ b/src/VBox/Additions/3D/win/VBoxICD/icd_forwarders.py @@ -0,0 +1,105 @@ +""" +Copyright (C) 2018-2023 Oracle and/or its affiliates. + +This file is part of VirtualBox base platform packages, as +available from https://www.virtualbox.org. + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License +as published by the Free Software Foundation, in version 3 of the +License. + +This program is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, see <https://www.gnu.org/licenses>. + +SPDX-License-Identifier: GPL-3.0-only +""" + +import sys + +def GenerateForwarders(): + + # Get list of functions. + exports_file = open(sys.argv[1], "r") + if not exports_file: + print("Error: couldn't open %s file!" % filename) + sys.exit() + + names = [] + cbArgs = [] + for line in exports_file.readlines(): + line = line.strip() + if len(line) > 0 and line[0] != ';' and line != 'EXPORTS': + # Parse 'glAccum = glAccum@8' + words = line.split('=', 1) + + # Function name + names.append(words[0].strip()) + + # Size of arguments in bytes + words = words[1].split('@') + cbArgs.append(words[1].strip()) + + exports_file.close() + + + # + # Assembler forwarders + # + asm_file = open(sys.argv[2], "w") + if not asm_file: + print("Error: couldn't open %s file!" % filename) + sys.exit() + + asm_file.write('%include "iprt/asmdefs.mac"\n') + asm_file.write('\n') + asm_file.write(';;;; Enable ICD_LAZY_LOAD to lazy load the ICD DLL (does not work on Win64)\n') + asm_file.write('; %define ICD_LAZY_LOAD 1\n') + asm_file.write('\n') + asm_file.write('%ifdef RT_ARCH_AMD64\n') + asm_file.write('%define PTR_SIZE_PREFIX qword\n') + asm_file.write('%else ; X86\n') + asm_file.write('%define PTR_SIZE_PREFIX dword\n') + asm_file.write('%endif\n') + asm_file.write('\n') + asm_file.write('%ifdef ICD_LAZY_LOAD\n') + asm_file.write('extern NAME(VBoxLoadICD)\n') + asm_file.write('%endif\n') + asm_file.write('extern NAME(g_hmodICD)\n') + + for index in range(len(names)): + fn = names[index] + cbRet = cbArgs[index] + asm_file.write('\n') + asm_file.write('BEGINPROC_EXPORTED %s\n' % fn) + asm_file.write(' extern NAME(pfn_%s)\n' % fn) + asm_file.write('; int3\n') + asm_file.write('%ifdef ICD_LAZY_LOAD\n') + asm_file.write(' mov xAX, PTR_SIZE_PREFIX NAME(g_hmodICD)\n') + asm_file.write(' mov xAX, [xAX]\n') + asm_file.write(' or xAX, xAX\n') + asm_file.write(' jnz l_icd_loaded_%s\n' % fn) + asm_file.write(' call NAME(VBoxLoadICD)\n') + asm_file.write('l_icd_loaded_%s:\n' % fn) + asm_file.write('%endif\n') + asm_file.write(' mov xAX, PTR_SIZE_PREFIX NAME(pfn_%s)\n' % fn) + asm_file.write(' mov xAX, [xAX]\n') + asm_file.write(' or xAX, xAX\n') + asm_file.write(' jnz l_jmp_to_%s\n' % fn) + asm_file.write('%ifdef RT_ARCH_AMD64\n') + asm_file.write(' ret\n') + asm_file.write('%else ; X86\n') + asm_file.write(' ret %s\n' % cbRet) + asm_file.write('%endif\n') + asm_file.write('l_jmp_to_%s:\n' % fn) + asm_file.write(' jmp xAX\n') + asm_file.write('ENDPROC %s\n' % fn) + + asm_file.close() + +GenerateForwarders() |