mirror of
https://github.com/openharmony/third_party_vulkan-loader.git
synced 2026-07-18 16:14:33 -04:00
andrew0229
3f7fe7b7b4
Signed-off-by: andrew0229 <zhangzhao62@huawei.com> Change-Id: Ifc4224db2c6ea7c159d3cabe8f075475d47a41a8
102 lines
3.8 KiB
Python
102 lines
3.8 KiB
Python
#!/usr/bin/python3 -i
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#
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# Copyright (c) 2022 The Khronos Group Inc.
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# Copyright (c) 2022 LunarG, Inc.
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# Author: Charles Giessen <charles@lunarg.com>
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# This script reads in the 'intermediate output' of a compiler to look for sizeof/offsetof information
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# necessary for the assembler portions of the loader. This is achieved by forcing the compiler to output
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# the intermediate assembly output and looking for specific patterns which contain the relevant information
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import sys
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import os.path
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from os.path import exists
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import re
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# Where to write the "gen_defines.asm" file
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destination_file = sys.argv[1]
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# The location the build system puts the intermediate asm file which depends on the compiler
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source_asm_file = sys.argv[2]
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# Whether we are using "MASM" or "GAS" for the assembler
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assembler_type = sys.argv[3]
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# Whether we are using gcc, clang, or msvc
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compiler = sys.argv[4]
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# taken from CMAKE_SYSTEM_PROCESSOR - x86_64, aarch64, or x86
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# Only used with GAS - MASM doesn't need this, as it has its own way to determine x86 vs x64
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arch = sys.argv[5]
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POSIX_COMPILERS = ["GNU", "Clang", "AppleClang"]
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if destination_file is None or source_asm_file is None or assembler_type is None or compiler is None or arch is None:
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print("Required command line arguments were not provided")
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sys.exit(1)
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defines = ["VULKAN_LOADER_ERROR_BIT",
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"PTR_SIZE",
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"CHAR_PTR_SIZE",
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"FUNCTION_OFFSET_INSTANCE",
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"PHYS_DEV_OFFSET_INST_DISPATCH",
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"PHYS_DEV_OFFSET_PHYS_DEV_TRAMP",
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"ICD_TERM_OFFSET_PHYS_DEV_TERM",
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"PHYS_DEV_OFFSET_PHYS_DEV_TERM",
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"INSTANCE_OFFSET_ICD_TERM",
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"DISPATCH_OFFSET_ICD_TERM",
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"EXT_OFFSET_DEVICE_DISPATCH" ]
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try:
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with open(source_asm_file, 'r') as f:
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asm_intermediate_file = f.read()
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except IOError:
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print("Could not open assembler file:", source_asm_file)
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sys.exit(1)
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with open(destination_file, "w", encoding="utf-8") as dest:
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if assembler_type == "MASM":
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# special case vulkan error bit due to it not appearing in the asm - its defined in the header as 8 so it shouldn't change
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dest.write("VULKAN_LOADER_ERROR_BIT equ 8;\n")
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elif assembler_type == "GAS":
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# let the assembler know which platform to use
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if arch == "x86_64":
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dest.write(".set X86_64, 1\n")
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elif arch == "aarch64" or arch == "arm64":
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dest.write(".set AARCH_64, 1\n")
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# Nothing to write in the x86 case
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for d in defines:
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match = None
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if compiler == "MSVC":
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if d == "VULKAN_LOADER_ERROR_BIT":
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continue # skip due to special case
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match = re.search(d + " DD [ ]*([0-9a-f]+)H", asm_intermediate_file)
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elif compiler in POSIX_COMPILERS:
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match = re.search(d + " = ([0-9]+)", asm_intermediate_file)
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if match:
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if compiler == "MSVC":
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value = str(int(match.group(1), 16))
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elif compiler in POSIX_COMPILERS:
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value = match.group(1)
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if assembler_type == "MASM":
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# MASM uses hex values, decode them here
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dest.write(d + " equ " + value +";\n")
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elif assembler_type == "GAS":
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dest.write(".set " + d + ", " + value + "\n")
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else:
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print("Couldn't find ", d)
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sys.exit(1)
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