374 lines
14 KiB
C++
374 lines
14 KiB
C++
//===- ARMAttributeParser.cpp - ARM Attribute Information Printer ---------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/ARMAttributeParser.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Support/Errc.h"
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#include "llvm/Support/LEB128.h"
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#include "llvm/Support/ScopedPrinter.h"
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using namespace llvm;
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using namespace llvm::ARMBuildAttrs;
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#define ATTRIBUTE_HANDLER(attr) \
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{ ARMBuildAttrs::attr, &ARMAttributeParser::attr }
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const ARMAttributeParser::DisplayHandler ARMAttributeParser::displayRoutines[] =
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{
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{ARMBuildAttrs::CPU_raw_name, &ARMAttributeParser::stringAttribute},
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{ARMBuildAttrs::CPU_name, &ARMAttributeParser::stringAttribute},
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ATTRIBUTE_HANDLER(CPU_arch),
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ATTRIBUTE_HANDLER(CPU_arch_profile),
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ATTRIBUTE_HANDLER(ARM_ISA_use),
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ATTRIBUTE_HANDLER(THUMB_ISA_use),
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ATTRIBUTE_HANDLER(FP_arch),
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ATTRIBUTE_HANDLER(WMMX_arch),
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ATTRIBUTE_HANDLER(Advanced_SIMD_arch),
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ATTRIBUTE_HANDLER(MVE_arch),
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ATTRIBUTE_HANDLER(PCS_config),
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ATTRIBUTE_HANDLER(ABI_PCS_R9_use),
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ATTRIBUTE_HANDLER(ABI_PCS_RW_data),
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ATTRIBUTE_HANDLER(ABI_PCS_RO_data),
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ATTRIBUTE_HANDLER(ABI_PCS_GOT_use),
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ATTRIBUTE_HANDLER(ABI_PCS_wchar_t),
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ATTRIBUTE_HANDLER(ABI_FP_rounding),
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ATTRIBUTE_HANDLER(ABI_FP_denormal),
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ATTRIBUTE_HANDLER(ABI_FP_exceptions),
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ATTRIBUTE_HANDLER(ABI_FP_user_exceptions),
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ATTRIBUTE_HANDLER(ABI_FP_number_model),
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ATTRIBUTE_HANDLER(ABI_align_needed),
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ATTRIBUTE_HANDLER(ABI_align_preserved),
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ATTRIBUTE_HANDLER(ABI_enum_size),
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ATTRIBUTE_HANDLER(ABI_HardFP_use),
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ATTRIBUTE_HANDLER(ABI_VFP_args),
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ATTRIBUTE_HANDLER(ABI_WMMX_args),
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ATTRIBUTE_HANDLER(ABI_optimization_goals),
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ATTRIBUTE_HANDLER(ABI_FP_optimization_goals),
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ATTRIBUTE_HANDLER(compatibility),
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ATTRIBUTE_HANDLER(CPU_unaligned_access),
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ATTRIBUTE_HANDLER(FP_HP_extension),
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ATTRIBUTE_HANDLER(ABI_FP_16bit_format),
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ATTRIBUTE_HANDLER(MPextension_use),
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ATTRIBUTE_HANDLER(DIV_use),
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ATTRIBUTE_HANDLER(DSP_extension),
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ATTRIBUTE_HANDLER(T2EE_use),
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ATTRIBUTE_HANDLER(Virtualization_use),
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ATTRIBUTE_HANDLER(nodefaults),
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};
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#undef ATTRIBUTE_HANDLER
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Error ARMAttributeParser::stringAttribute(AttrType tag) {
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StringRef tagName =
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ELFAttrs::attrTypeAsString(tag, tagToStringMap, /*TagPrefix=*/false);
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StringRef desc = de.getCStrRef(cursor);
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if (sw) {
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DictScope scope(*sw, "Attribute");
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sw->printNumber("Tag", tag);
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if (!tagName.empty())
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sw->printString("TagName", tagName);
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sw->printString("Value", desc);
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}
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return Error::success();
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}
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Error ARMAttributeParser::CPU_arch(AttrType tag) {
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static const char *strings[] = {
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"Pre-v4", "ARM v4", "ARM v4T", "ARM v5T", "ARM v5TE", "ARM v5TEJ", "ARM v6",
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"ARM v6KZ", "ARM v6T2", "ARM v6K", "ARM v7", "ARM v6-M", "ARM v6S-M",
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"ARM v7E-M", "ARM v8", nullptr,
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"ARM v8-M Baseline", "ARM v8-M Mainline", nullptr, nullptr, nullptr,
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"ARM v8.1-M Mainline"
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};
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return parseStringAttribute("CPU_arch", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::CPU_arch_profile(AttrType tag) {
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uint64_t value = de.getULEB128(cursor);
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StringRef profile;
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switch (value) {
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default: profile = "Unknown"; break;
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case 'A': profile = "Application"; break;
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case 'R': profile = "Real-time"; break;
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case 'M': profile = "Microcontroller"; break;
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case 'S': profile = "Classic"; break;
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case 0: profile = "None"; break;
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}
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printAttribute(tag, value, profile);
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return Error::success();
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}
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Error ARMAttributeParser::ARM_ISA_use(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "Permitted"};
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return parseStringAttribute("ARM_ISA_use", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::THUMB_ISA_use(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "Thumb-1", "Thumb-2", "Permitted"};
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return parseStringAttribute("THUMB_ISA_use", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::FP_arch(AttrType tag) {
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static const char *strings[] = {
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"Not Permitted", "VFPv1", "VFPv2", "VFPv3", "VFPv3-D16",
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"VFPv4", "VFPv4-D16", "ARMv8-a FP", "ARMv8-a FP-D16"};
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return parseStringAttribute("FP_arch", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::WMMX_arch(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "WMMXv1", "WMMXv2"};
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return parseStringAttribute("WMMX_arch", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::Advanced_SIMD_arch(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "NEONv1", "NEONv2+FMA",
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"ARMv8-a NEON", "ARMv8.1-a NEON"};
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return parseStringAttribute("Advanced_SIMD_arch", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::MVE_arch(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "MVE integer",
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"MVE integer and float"};
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return parseStringAttribute("MVE_arch", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::PCS_config(AttrType tag) {
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static const char *strings[] = {
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"None", "Bare Platform", "Linux Application", "Linux DSO", "Palm OS 2004",
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"Reserved (Palm OS)", "Symbian OS 2004", "Reserved (Symbian OS)"};
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return parseStringAttribute("PCS_config", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_PCS_R9_use(AttrType tag) {
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static const char *strings[] = {"v6", "Static Base", "TLS", "Unused"};
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return parseStringAttribute("ABI_PCS_R9_use", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_PCS_RW_data(AttrType tag) {
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static const char *strings[] = {"Absolute", "PC-relative", "SB-relative",
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"Not Permitted"};
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return parseStringAttribute("ABI_PCS_RW_data", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_PCS_RO_data(AttrType tag) {
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static const char *strings[] = {"Absolute", "PC-relative", "Not Permitted"};
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return parseStringAttribute("ABI_PCS_RO_data", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_PCS_GOT_use(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "Direct", "GOT-Indirect"};
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return parseStringAttribute("ABI_PCS_GOT_use", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_PCS_wchar_t(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "Unknown", "2-byte",
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"Unknown", "4-byte"};
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return parseStringAttribute("ABI_PCS_wchar_t", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_FP_rounding(AttrType tag) {
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static const char *strings[] = {"IEEE-754", "Runtime"};
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return parseStringAttribute("ABI_FP_rounding", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_FP_denormal(AttrType tag) {
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static const char *strings[] = {"Unsupported", "IEEE-754", "Sign Only"};
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return parseStringAttribute("ABI_FP_denormal", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_FP_exceptions(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "IEEE-754"};
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return parseStringAttribute("ABI_FP_exceptions", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_FP_user_exceptions(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "IEEE-754"};
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return parseStringAttribute("ABI_FP_user_exceptions", tag,
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makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_FP_number_model(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "Finite Only", "RTABI",
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"IEEE-754"};
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return parseStringAttribute("ABI_FP_number_model", tag,
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makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_align_needed(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "8-byte alignment",
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"4-byte alignment", "Reserved"};
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uint64_t value = de.getULEB128(cursor);
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std::string description;
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if (value < array_lengthof(strings))
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description = strings[value];
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else if (value <= 12)
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description = "8-byte alignment, " + utostr(1ULL << value) +
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"-byte extended alignment";
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else
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description = "Invalid";
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printAttribute(tag, value, description);
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return Error::success();
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}
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Error ARMAttributeParser::ABI_align_preserved(AttrType tag) {
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static const char *strings[] = {"Not Required", "8-byte data alignment",
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"8-byte data and code alignment", "Reserved"};
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uint64_t value = de.getULEB128(cursor);
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std::string description;
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if (value < array_lengthof(strings))
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description = std::string(strings[value]);
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else if (value <= 12)
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description = std::string("8-byte stack alignment, ") +
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utostr(1ULL << value) + std::string("-byte data alignment");
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else
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description = "Invalid";
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printAttribute(tag, value, description);
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return Error::success();
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}
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Error ARMAttributeParser::ABI_enum_size(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "Packed", "Int32",
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"External Int32"};
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return parseStringAttribute("ABI_enum_size", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_HardFP_use(AttrType tag) {
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static const char *strings[] = {"Tag_FP_arch", "Single-Precision", "Reserved",
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"Tag_FP_arch (deprecated)"};
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return parseStringAttribute("ABI_HardFP_use", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_VFP_args(AttrType tag) {
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static const char *strings[] = {"AAPCS", "AAPCS VFP", "Custom",
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"Not Permitted"};
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return parseStringAttribute("ABI_VFP_args", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_WMMX_args(AttrType tag) {
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static const char *strings[] = {"AAPCS", "iWMMX", "Custom"};
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return parseStringAttribute("ABI_WMMX_args", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_optimization_goals(AttrType tag) {
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static const char *strings[] = {
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"None", "Speed", "Aggressive Speed", "Size", "Aggressive Size", "Debugging",
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"Best Debugging"
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};
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return parseStringAttribute("ABI_optimization_goals", tag,
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makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_FP_optimization_goals(AttrType tag) {
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static const char *strings[] = {
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"None", "Speed", "Aggressive Speed", "Size", "Aggressive Size",
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"Accuracy", "Best Accuracy"};
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return parseStringAttribute("ABI_FP_optimization_goals", tag,
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makeArrayRef(strings));
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}
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Error ARMAttributeParser::compatibility(AttrType tag) {
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uint64_t integer = de.getULEB128(cursor);
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StringRef string = de.getCStrRef(cursor);
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if (sw) {
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DictScope scope(*sw, "Attribute");
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sw->printNumber("Tag", tag);
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sw->startLine() << "Value: " << integer << ", " << string << '\n';
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sw->printString("TagName",
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ELFAttrs::attrTypeAsString(tag, tagToStringMap,
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/*hasTagPrefix=*/false));
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switch (integer) {
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case 0:
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sw->printString("Description", StringRef("No Specific Requirements"));
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break;
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case 1:
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sw->printString("Description", StringRef("AEABI Conformant"));
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break;
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default:
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sw->printString("Description", StringRef("AEABI Non-Conformant"));
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break;
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}
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}
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return Error::success();
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}
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Error ARMAttributeParser::CPU_unaligned_access(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "v6-style"};
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return parseStringAttribute("CPU_unaligned_access", tag,
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makeArrayRef(strings));
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}
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Error ARMAttributeParser::FP_HP_extension(AttrType tag) {
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static const char *strings[] = {"If Available", "Permitted"};
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return parseStringAttribute("FP_HP_extension", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::ABI_FP_16bit_format(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "IEEE-754", "VFPv3"};
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return parseStringAttribute("ABI_FP_16bit_format", tag,
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makeArrayRef(strings));
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}
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Error ARMAttributeParser::MPextension_use(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "Permitted"};
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return parseStringAttribute("MPextension_use", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::DIV_use(AttrType tag) {
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static const char *strings[] = {"If Available", "Not Permitted", "Permitted"};
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return parseStringAttribute("DIV_use", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::DSP_extension(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "Permitted"};
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return parseStringAttribute("DSP_extension", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::T2EE_use(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "Permitted"};
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return parseStringAttribute("T2EE_use", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::Virtualization_use(AttrType tag) {
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static const char *strings[] = {"Not Permitted", "TrustZone",
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"Virtualization Extensions",
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"TrustZone + Virtualization Extensions"};
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return parseStringAttribute("Virtualization_use", tag, makeArrayRef(strings));
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}
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Error ARMAttributeParser::nodefaults(AttrType tag) {
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uint64_t value = de.getULEB128(cursor);
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printAttribute(tag, value, "Unspecified Tags UNDEFINED");
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return Error::success();
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}
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Error ARMAttributeParser::handler(uint64_t tag, bool &handled) {
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handled = false;
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for (unsigned AHI = 0, AHE = array_lengthof(displayRoutines); AHI != AHE;
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++AHI) {
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if (uint64_t(displayRoutines[AHI].attribute) == tag) {
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if (Error e =
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(this->*displayRoutines[AHI].routine)(static_cast<AttrType>(tag)))
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return e;
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handled = true;
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break;
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}
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}
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return Error::success();
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}
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