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IABSD.fr/xenocara/lib/mesa/src/gfxstream/codegen/scripts/cereal/subdecode.py
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- lib/mesa/src/gfxstream/codegen/scripts/cereal/subdecode.py
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# Copyright 2018 Google LLC # SPDX-License-Identifier: MIT from .common.codegen import CodeGen, VulkanWrapperGenerator from .common.vulkantypes import VulkanAPI, iterateVulkanType, VulkanType from .reservedmarshaling import VulkanReservedMarshalingCodegen from .transform import TransformCodegen from .wrapperdefs import API_PREFIX_RESERVEDUNMARSHAL from .wrapperdefs import MAX_PACKET_LENGTH from .wrapperdefs import ROOT_TYPE_DEFAULT_VALUE decoder_decl_preamble = """ """ decoder_impl_preamble = """ """ global_state_prefix = "this->on_" READ_STREAM = "readStream" WRITE_STREAM = "vkStream" # Driver workarounds for APIs that don't work well multithreaded driver_workarounds_global_lock_apis = [ "vkCreatePipelineLayout", "vkDestroyPipelineLayout", ] MAX_STACK_ITEMS = "16" def emit_param_decl_for_reading(param, cgen): if param.staticArrExpr: cgen.stmt( cgen.makeRichCTypeDecl(param.getForNonConstAccess())) else: cgen.stmt( cgen.makeRichCTypeDecl(param)) if param.pointerIndirectionLevels > 0: lenAccess = cgen.generalLengthAccess(param) if not lenAccess: lenAccess = "1" arrSize = "1" if "1" == lenAccess else "MAX_STACK_ITEMS" typeHere = "uint8_t*" if "void" == param.typeName else param.typeName cgen.stmt("%s%s stack_%s[%s]" % ( typeHere, "*" * (param.pointerIndirectionLevels - 1), param.paramName, arrSize)) def emit_unmarshal(typeInfo, param, cgen, output=False, destroy=False, noUnbox=False): if destroy: iterateVulkanType(typeInfo, param, VulkanReservedMarshalingCodegen( cgen, "host", READ_STREAM, ROOT_TYPE_DEFAULT_VALUE, param.paramName, "readStreamPtrPtr", API_PREFIX_RESERVEDUNMARSHAL, "", direction="read", dynAlloc=True)) lenAccess = cgen.generalLengthAccess(param) lenAccessGuard = cgen.generalLengthAccessGuard(param) if None == lenAccess or "1" == lenAccess: cgen.stmt("boxed_%s_preserve = %s" % (param.paramName, param.paramName)) cgen.stmt("%s = unbox_%s(%s)" % (param.paramName, param.typeName, param.paramName)) else: if lenAccessGuard is not None: self.cgen.beginIf(lenAccessGuard) cgen.beginFor("uint32_t i = 0", "i < %s" % lenAccess, "++i") cgen.stmt("boxed_%s_preserve[i] = %s[i]" % (param.paramName, param.paramName)) cgen.stmt("((%s*)(%s))[i] = unbox_%s(%s[i])" % (param.typeName, param.paramName, param.typeName, param.paramName)) cgen.endFor() if lenAccessGuard is not None: self.cgen.endIf() else: if noUnbox: cgen.line("// No unbox for %s" % (param.paramName)) lenAccess = cgen.generalLengthAccess(param) if not lenAccess: lenAccess = "1" arrSize = "1" if "1" == lenAccess else "MAX_STACK_ITEMS" iterateVulkanType(typeInfo, param, VulkanReservedMarshalingCodegen( cgen, "host", READ_STREAM, ROOT_TYPE_DEFAULT_VALUE, param.paramName, "readStreamPtrPtr", API_PREFIX_RESERVEDUNMARSHAL, "" if (output or noUnbox) else "unbox_", direction="read", dynAlloc=True, stackVar="stack_%s" % param.paramName, stackArrSize=arrSize)) def emit_dispatch_unmarshal(typeInfo, param, cgen, globalWrapped): if globalWrapped: cgen.stmt( "// Begin global wrapped dispatchable handle unboxing for %s" % param.paramName) iterateVulkanType(typeInfo, param, VulkanReservedMarshalingCodegen( cgen, "host", READ_STREAM, ROOT_TYPE_DEFAULT_VALUE, param.paramName, "readStreamPtrPtr", API_PREFIX_RESERVEDUNMARSHAL, "", direction="read", dynAlloc=True)) else: cgen.stmt( "// Begin non wrapped dispatchable handle unboxing for %s" % param.paramName) # cgen.stmt("%s->unsetHandleMapping()" % READ_STREAM) iterateVulkanType(typeInfo, param, VulkanReservedMarshalingCodegen( cgen, "host", READ_STREAM, ROOT_TYPE_DEFAULT_VALUE, param.paramName, "readStreamPtrPtr", API_PREFIX_RESERVEDUNMARSHAL, "", direction="read", dynAlloc=True)) cgen.stmt("auto unboxed_%s = unbox_%s(%s)" % (param.paramName, param.typeName, param.paramName)) cgen.stmt("auto vk = dispatch_%s(%s)" % (param.typeName, param.paramName)) cgen.stmt("// End manual dispatchable handle unboxing for %s" % param.paramName) def emit_transform(typeInfo, param, cgen, variant="tohost"): res = \ iterateVulkanType(typeInfo, param, TransformCodegen( cgen, param.paramName, "globalstate", "transform_%s_" % variant, variant)) if not res: cgen.stmt("(void)%s" % param.paramName) # Everything here elides the initial arg class DecodingParameters(object): def __init__(self, api: VulkanAPI): self.params: list[VulkanType] = [] self.toRead: list[VulkanType] = [] self.toWrite: list[VulkanType] = [] for i, param in enumerate(api.parameters[1:]): if i == 0 and param.isDispatchableHandleType(): param.dispatchHandle = True if param.isNonDispatchableHandleType() and param.isCreatedBy(api): param.nonDispatchableHandleCreate = True if param.isNonDispatchableHandleType() and param.isDestroyedBy(api): param.nonDispatchableHandleDestroy = True if param.isDispatchableHandleType() and param.isCreatedBy(api): param.dispatchableHandleCreate = True if param.isDispatchableHandleType() and param.isDestroyedBy(api): param.dispatchableHandleDestroy = True self.toRead.append(param) if param.possiblyOutput(): self.toWrite.append(param) self.params.append(param) def emit_call_log(api, cgen): decodingParams = DecodingParameters(api) paramsToRead = decodingParams.toRead # cgen.beginIf("m_logCalls") paramLogFormat = "%p" paramLogArgs = ["(void*)boxed_dispatchHandle"] for p in paramsToRead: paramLogFormat += "0x%llx " for p in paramsToRead: paramLogArgs.append("(unsigned long long)%s" % (p.paramName)) # cgen.stmt("fprintf(stderr, \"substream %%p: call %s %s\\n\", readStream, %s)" % (api.name, paramLogFormat, ", ".join(paramLogArgs))) # cgen.endIf() def emit_decode_parameters(typeInfo, api, cgen, globalWrapped=False): decodingParams = DecodingParameters(api) paramsToRead = decodingParams.toRead for p in paramsToRead: emit_param_decl_for_reading(p, cgen) i = 0 for p in paramsToRead: lenAccess = cgen.generalLengthAccess(p) if p.dispatchHandle: emit_dispatch_unmarshal(typeInfo, p, cgen, globalWrapped) else: destroy = p.nonDispatchableHandleDestroy or p.dispatchableHandleDestroy noUnbox = False if p.nonDispatchableHandleDestroy or p.dispatchableHandleDestroy: destroy = True cgen.stmt( "// Begin manual non dispatchable handle destroy unboxing for %s" % p.paramName) if None == lenAccess or "1" == lenAccess: cgen.stmt("%s boxed_%s_preserve" % (p.typeName, p.paramName)) else: cgen.stmt("%s* boxed_%s_preserve; %s->alloc((void**)&boxed_%s_preserve, %s * sizeof(%s))" % (p.typeName, p.paramName, READ_STREAM, p.paramName, lenAccess, p.typeName)) if p.possiblyOutput(): cgen.stmt( "// Begin manual dispatchable handle unboxing for %s" % p.paramName) cgen.stmt("%s->unsetHandleMapping()" % READ_STREAM) emit_unmarshal(typeInfo, p, cgen, output=p.possiblyOutput( ), destroy=destroy, noUnbox=noUnbox) i += 1 for p in paramsToRead: emit_transform(typeInfo, p, cgen, variant="tohost") emit_call_log(api, cgen) def emit_dispatch_call(api, cgen): decodingParams = DecodingParameters(api) customParams = ["(VkCommandBuffer)dispatchHandle"] for (i, p) in enumerate(api.parameters[1:]): customParam = p.paramName if decodingParams.params[i].dispatchHandle: customParam = "unboxed_%s" % p.paramName customParams.append(customParam) if api.name in driver_workarounds_global_lock_apis: cgen.stmt("lock()") cgen.vkApiCall(api, customPrefix="vk->", customParameters=customParams, checkForDeviceLost=True, globalStatePrefix=global_state_prefix, checkForOutOfMemory=True) if api.name in driver_workarounds_global_lock_apis: cgen.stmt("unlock()") def emit_global_state_wrapped_call(api, cgen, context=False): customParams = ["pool", "nullptr", "(VkCommandBuffer)(boxed_dispatchHandle)"] + \ list(map(lambda p: p.paramName, api.parameters[1:])) if context: customParams += ["context"]; cgen.vkApiCall(api, customPrefix=global_state_prefix, customParameters=customParams, checkForDeviceLost=True, checkForOutOfMemory=True, globalStatePrefix=global_state_prefix) def emit_default_decoding(typeInfo, api, cgen): emit_decode_parameters(typeInfo, api, cgen) emit_dispatch_call(api, cgen) def emit_global_state_wrapped_decoding(typeInfo, api, cgen): emit_decode_parameters(typeInfo, api, cgen, globalWrapped=True) emit_global_state_wrapped_call(api, cgen) def emit_global_state_wrapped_decoding_with_context(typeInfo, api, cgen): emit_decode_parameters(typeInfo, api, cgen, globalWrapped=True) emit_global_state_wrapped_call(api, cgen, context=True) custom_decodes = { "vkCmdCopyBufferToImage": emit_global_state_wrapped_decoding_with_context, "vkCmdCopyImage": emit_global_state_wrapped_decoding, "vkCmdCopyImageToBuffer": emit_global_state_wrapped_decoding, "vkCmdCopyBufferToImage2": emit_global_state_wrapped_decoding_with_context, "vkCmdCopyImage2": emit_global_state_wrapped_decoding, "vkCmdCopyImageToBuffer2": emit_global_state_wrapped_decoding, "vkCmdCopyBufferToImage2KHR": emit_global_state_wrapped_decoding_with_context, "vkCmdCopyImage2KHR": emit_global_state_wrapped_decoding, "vkCmdCopyImageToBuffer2KHR": emit_global_state_wrapped_decoding, "vkCmdExecuteCommands": emit_global_state_wrapped_decoding, "vkBeginCommandBuffer": emit_global_state_wrapped_decoding_with_context, "vkEndCommandBuffer": emit_global_state_wrapped_decoding_with_context, "vkResetCommandBuffer": emit_global_state_wrapped_decoding, "vkCmdPipelineBarrier": emit_global_state_wrapped_decoding, "vkCmdPipelineBarrier2": emit_global_state_wrapped_decoding, "vkCmdBindPipeline": emit_global_state_wrapped_decoding, "vkCmdBindDescriptorSets": emit_global_state_wrapped_decoding, "vkCmdCopyQueryPoolResults": emit_global_state_wrapped_decoding, "vkBeginCommandBufferAsyncGOOGLE": emit_global_state_wrapped_decoding_with_context, "vkEndCommandBufferAsyncGOOGLE": emit_global_state_wrapped_decoding_with_context, "vkResetCommandBufferAsyncGOOGLE": emit_global_state_wrapped_decoding, "vkCommandBufferHostSyncGOOGLE": emit_global_state_wrapped_decoding, "vkCmdBeginRenderPass" : emit_global_state_wrapped_decoding, "vkCmdBeginRenderPass2" : emit_global_state_wrapped_decoding, "vkCmdBeginRenderPass2KHR" : emit_global_state_wrapped_decoding, } class VulkanSubDecoder(VulkanWrapperGenerator): def __init__(self, module, typeInfo): VulkanWrapperGenerator.__init__(self, module, typeInfo) self.typeInfo = typeInfo self.cgen = CodeGen() def onBegin(self,): self.module.appendImpl( "#define MAX_STACK_ITEMS %s\n" % MAX_STACK_ITEMS) self.module.appendImpl( "#define MAX_PACKET_LENGTH %s\n" % MAX_PACKET_LENGTH) self.module.appendImpl( "size_t subDecode(VulkanMemReadingStream* readStream, VulkanDispatch* vk, void* boxed_dispatchHandle, void* dispatchHandle, VkDeviceSize dataSize, const void* pData, const VkDecoderContext& context)\n") self.cgen.beginBlock() # function body self.cgen.stmt("auto& metricsLogger = *context.metricsLogger") self.cgen.stmt("uint32_t count = 0") self.cgen.stmt("unsigned char *buf = (unsigned char *)pData") self.cgen.stmt("android::base::BumpPool* pool = readStream->pool()") self.cgen.stmt("unsigned char *ptr = (unsigned char *)pData") self.cgen.stmt( "const unsigned char* const end = (const unsigned char*)buf + dataSize") self.cgen.stmt( "VkDecoderGlobalState* globalstate = VkDecoderGlobalState::get()") self.cgen.line("while (end - ptr >= 8)") self.cgen.beginBlock() # while loop self.cgen.stmt("uint32_t opcode = *(uint32_t *)ptr") self.cgen.stmt("uint32_t packetLen = *(uint32_t *)(ptr + 4)") self.cgen.line(""" // packetLen should be at least 8 (op code and packet length) and should not be excessively large if (packetLen < 8 || packetLen > MAX_PACKET_LENGTH) { WARN("Bad packet length %d detected, subdecode may fail", packetLen); metricsLogger.logMetricEvent(MetricEventBadPacketLength{ .len = packetLen }); } """) self.cgen.stmt("if (end - ptr < packetLen) return ptr - (unsigned char*)buf") self.cgen.stmt("%s->setBuf((uint8_t*)(ptr + 8))" % READ_STREAM) self.cgen.stmt( "uint8_t* readStreamPtr = %s->getBuf(); uint8_t** readStreamPtrPtr = &readStreamPtr" % READ_STREAM) self.cgen.line("switch (opcode)") self.cgen.beginBlock() # switch stmt self.module.appendImpl(self.cgen.swapCode()) def onGenCmd(self, cmdinfo, name, alias): typeInfo = self.typeInfo cgen = self.cgen api = typeInfo.apis[name] if "commandBuffer" != api.parameters[0].paramName: return cgen.line("case OP_%s:" % name) cgen.beginBlock() cgen.stmt("GFXSTREAM_TRACE_EVENT(GFXSTREAM_TRACE_DECODER_CATEGORY, \"VkSubDecoder %s\")" % name) if api.name in custom_decodes.keys(): custom_decodes[api.name](typeInfo, api, cgen) else: emit_default_decoding(typeInfo, api, cgen) cgen.stmt("break") cgen.endBlock() self.module.appendImpl(self.cgen.swapCode()) def onEnd(self,): self.cgen.line("default:") self.cgen.beginBlock() self.cgen.stmt( "GFXSTREAM_ABORT(::emugl::FatalError(::emugl::ABORT_REASON_OTHER)) << \"Unrecognized opcode \" << opcode") self.cgen.endBlock() self.cgen.endBlock() # switch stmt self.cgen.stmt("++count; if (count % 1000 == 0) { pool->freeAll(); }") self.cgen.stmt("ptr += packetLen") self.cgen.endBlock() # while loop self.cgen.stmt("pool->freeAll()") self.cgen.stmt("return ptr - (unsigned char*)buf;") self.cgen.endBlock() # function body self.module.appendImpl(self.cgen.swapCode())