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authorLiam <byteslice@airmail.cc>2022-06-05 05:50:43 +0200
committerLiam <byteslice@airmail.cc>2022-06-05 15:42:05 +0200
commit3c313a43fde6e1f1ef74fd874ca9bf2611be9d95 (patch)
tree89ed86920027a857bcdab5cfc947f220dabd5602 /src/common
parentMerge pull request #8410 from liamwhite/thread-names (diff)
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Diffstat (limited to 'src/common')
-rw-r--r--src/common/CMakeLists.txt1
-rw-r--r--src/common/elf.h333
2 files changed, 334 insertions, 0 deletions
diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
index adf70eb8b..73bf626d4 100644
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -58,6 +58,7 @@ add_library(common STATIC
div_ceil.h
dynamic_library.cpp
dynamic_library.h
+ elf.h
error.cpp
error.h
expected.h
diff --git a/src/common/elf.h b/src/common/elf.h
new file mode 100644
index 000000000..14a5e9597
--- /dev/null
+++ b/src/common/elf.h
@@ -0,0 +1,333 @@
+// SPDX-FileCopyrightText: 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <cstddef>
+
+#include "common_types.h"
+
+namespace Common {
+namespace ELF {
+
+/* Type for a 16-bit quantity. */
+using Elf32_Half = u16;
+using Elf64_Half = u16;
+
+/* Types for signed and unsigned 32-bit quantities. */
+using Elf32_Word = u32;
+using Elf32_Sword = s32;
+using Elf64_Word = u32;
+using Elf64_Sword = s32;
+
+/* Types for signed and unsigned 64-bit quantities. */
+using Elf32_Xword = u64;
+using Elf32_Sxword = s64;
+using Elf64_Xword = u64;
+using Elf64_Sxword = s64;
+
+/* Type of addresses. */
+using Elf32_Addr = u32;
+using Elf64_Addr = u64;
+
+/* Type of file offsets. */
+using Elf32_Off = u32;
+using Elf64_Off = u64;
+
+/* Type for section indices, which are 16-bit quantities. */
+using Elf32_Section = u16;
+using Elf64_Section = u16;
+
+/* Type for version symbol information. */
+using Elf32_Versym = Elf32_Half;
+using Elf64_Versym = Elf64_Half;
+
+constexpr size_t ElfIdentSize = 16;
+
+/* The ELF file header. This appears at the start of every ELF file. */
+
+struct Elf32_Ehdr {
+ std::array<u8, ElfIdentSize> e_ident; /* Magic number and other info */
+ Elf32_Half e_type; /* Object file type */
+ Elf32_Half e_machine; /* Architecture */
+ Elf32_Word e_version; /* Object file version */
+ Elf32_Addr e_entry; /* Entry point virtual address */
+ Elf32_Off e_phoff; /* Program header table file offset */
+ Elf32_Off e_shoff; /* Section header table file offset */
+ Elf32_Word e_flags; /* Processor-specific flags */
+ Elf32_Half e_ehsize; /* ELF header size in bytes */
+ Elf32_Half e_phentsize; /* Program header table entry size */
+ Elf32_Half e_phnum; /* Program header table entry count */
+ Elf32_Half e_shentsize; /* Section header table entry size */
+ Elf32_Half e_shnum; /* Section header table entry count */
+ Elf32_Half e_shstrndx; /* Section header string table index */
+};
+
+struct Elf64_Ehdr {
+ std::array<u8, ElfIdentSize> e_ident; /* Magic number and other info */
+ Elf64_Half e_type; /* Object file type */
+ Elf64_Half e_machine; /* Architecture */
+ Elf64_Word e_version; /* Object file version */
+ Elf64_Addr e_entry; /* Entry point virtual address */
+ Elf64_Off e_phoff; /* Program header table file offset */
+ Elf64_Off e_shoff; /* Section header table file offset */
+ Elf64_Word e_flags; /* Processor-specific flags */
+ Elf64_Half e_ehsize; /* ELF header size in bytes */
+ Elf64_Half e_phentsize; /* Program header table entry size */
+ Elf64_Half e_phnum; /* Program header table entry count */
+ Elf64_Half e_shentsize; /* Section header table entry size */
+ Elf64_Half e_shnum; /* Section header table entry count */
+ Elf64_Half e_shstrndx; /* Section header string table index */
+};
+
+constexpr u8 ElfClass32 = 1; /* 32-bit objects */
+constexpr u8 ElfClass64 = 2; /* 64-bit objects */
+constexpr u8 ElfData2Lsb = 1; /* 2's complement, little endian */
+constexpr u8 ElfVersionCurrent = 1; /* EV_CURRENT */
+constexpr u8 ElfOsAbiNone = 0; /* System V ABI */
+
+constexpr u16 ElfTypeNone = 0; /* No file type */
+constexpr u16 ElfTypeRel = 0; /* Relocatable file */
+constexpr u16 ElfTypeExec = 0; /* Executable file */
+constexpr u16 ElfTypeDyn = 0; /* Shared object file */
+
+constexpr u16 ElfMachineArm = 40; /* ARM */
+constexpr u16 ElfMachineAArch64 = 183; /* ARM AARCH64 */
+
+constexpr std::array<u8, ElfIdentSize> Elf32Ident{
+ 0x7f, 'E', 'L', 'F', ElfClass32, ElfData2Lsb, ElfVersionCurrent, ElfOsAbiNone};
+
+constexpr std::array<u8, ElfIdentSize> Elf64Ident{
+ 0x7f, 'E', 'L', 'F', ElfClass64, ElfData2Lsb, ElfVersionCurrent, ElfOsAbiNone};
+
+/* Section header. */
+
+struct Elf32_Shdr {
+ Elf32_Word sh_name; /* Section name (string tbl index) */
+ Elf32_Word sh_type; /* Section type */
+ Elf32_Word sh_flags; /* Section flags */
+ Elf32_Addr sh_addr; /* Section virtual addr at execution */
+ Elf32_Off sh_offset; /* Section file offset */
+ Elf32_Word sh_size; /* Section size in bytes */
+ Elf32_Word sh_link; /* Link to another section */
+ Elf32_Word sh_info; /* Additional section information */
+ Elf32_Word sh_addralign; /* Section alignment */
+ Elf32_Word sh_entsize; /* Entry size if section holds table */
+};
+
+struct Elf64_Shdr {
+ Elf64_Word sh_name; /* Section name (string tbl index) */
+ Elf64_Word sh_type; /* Section type */
+ Elf64_Xword sh_flags; /* Section flags */
+ Elf64_Addr sh_addr; /* Section virtual addr at execution */
+ Elf64_Off sh_offset; /* Section file offset */
+ Elf64_Xword sh_size; /* Section size in bytes */
+ Elf64_Word sh_link; /* Link to another section */
+ Elf64_Word sh_info; /* Additional section information */
+ Elf64_Xword sh_addralign; /* Section alignment */
+ Elf64_Xword sh_entsize; /* Entry size if section holds table */
+};
+
+constexpr u32 ElfShnUndef = 0; /* Undefined section */
+
+constexpr u32 ElfShtNull = 0; /* Section header table entry unused */
+constexpr u32 ElfShtProgBits = 1; /* Program data */
+constexpr u32 ElfShtSymtab = 2; /* Symbol table */
+constexpr u32 ElfShtStrtab = 3; /* String table */
+constexpr u32 ElfShtRela = 4; /* Relocation entries with addends */
+constexpr u32 ElfShtDynamic = 6; /* Dynamic linking information */
+constexpr u32 ElfShtNobits = 7; /* Program space with no data (bss) */
+constexpr u32 ElfShtRel = 9; /* Relocation entries, no addends */
+constexpr u32 ElfShtDynsym = 11; /* Dynamic linker symbol table */
+
+/* Symbol table entry. */
+
+struct Elf32_Sym {
+ Elf32_Word st_name; /* Symbol name (string tbl index) */
+ Elf32_Addr st_value; /* Symbol value */
+ Elf32_Word st_size; /* Symbol size */
+ u8 st_info; /* Symbol type and binding */
+ u8 st_other; /* Symbol visibility */
+ Elf32_Section st_shndx; /* Section index */
+};
+
+struct Elf64_Sym {
+ Elf64_Word st_name; /* Symbol name (string tbl index) */
+ u8 st_info; /* Symbol type and binding */
+ u8 st_other; /* Symbol visibility */
+ Elf64_Section st_shndx; /* Section index */
+ Elf64_Addr st_value; /* Symbol value */
+ Elf64_Xword st_size; /* Symbol size */
+};
+
+/* How to extract and insert information held in the st_info field. */
+
+static inline u8 ElfStBind(u8 st_info) {
+ return st_info >> 4;
+}
+static inline u8 ElfStType(u8 st_info) {
+ return st_info & 0xf;
+}
+static inline u8 ElfStInfo(u8 st_bind, u8 st_type) {
+ return static_cast<u8>((st_bind << 4) + (st_type & 0xf));
+}
+
+constexpr u8 ElfBindLocal = 0; /* Local symbol */
+constexpr u8 ElfBindGlobal = 1; /* Global symbol */
+constexpr u8 ElfBindWeak = 2; /* Weak symbol */
+
+constexpr u8 ElfTypeUnspec = 0; /* Symbol type is unspecified */
+constexpr u8 ElfTypeObject = 1; /* Symbol is a data object */
+constexpr u8 ElfTypeFunc = 2; /* Symbol is a code object */
+
+static inline u8 ElfStVisibility(u8 st_other) {
+ return static_cast<u8>(st_other & 0x3);
+}
+
+constexpr u8 ElfVisibilityDefault = 0; /* Default symbol visibility rules */
+constexpr u8 ElfVisibilityInternal = 1; /* Processor specific hidden class */
+constexpr u8 ElfVisibilityHidden = 2; /* Sym unavailable in other modules */
+constexpr u8 ElfVisibilityProtected = 3; /* Not preemptible, not exported */
+
+/* Relocation table entry without addend (in section of type ShtRel). */
+
+struct Elf32_Rel {
+ Elf32_Addr r_offset; /* Address */
+ Elf32_Word r_info; /* Relocation type and symbol index */
+};
+
+/* Relocation table entry with addend (in section of type ShtRela). */
+
+struct Elf32_Rela {
+ Elf32_Addr r_offset; /* Address */
+ Elf32_Word r_info; /* Relocation type and symbol index */
+ Elf32_Sword r_addend; /* Addend */
+};
+
+struct Elf64_Rela {
+ Elf64_Addr r_offset; /* Address */
+ Elf64_Xword r_info; /* Relocation type and symbol index */
+ Elf64_Sxword r_addend; /* Addend */
+};
+
+/* How to extract and insert information held in the r_info field. */
+
+static inline u32 Elf32RelSymIndex(Elf32_Word r_info) {
+ return r_info >> 8;
+}
+static inline u8 Elf32RelType(Elf32_Word r_info) {
+ return static_cast<u8>(r_info & 0xff);
+}
+static inline Elf32_Word Elf32RelInfo(u32 sym_index, u8 type) {
+ return (sym_index << 8) + type;
+}
+static inline u32 Elf64RelSymIndex(Elf64_Xword r_info) {
+ return static_cast<u32>(r_info >> 32);
+}
+static inline u32 Elf64RelType(Elf64_Xword r_info) {
+ return r_info & 0xffffffff;
+}
+static inline Elf64_Xword Elf64RelInfo(u32 sym_index, u32 type) {
+ return (static_cast<Elf64_Xword>(sym_index) << 32) + type;
+}
+
+constexpr u32 ElfArmCopy = 20; /* Copy symbol at runtime */
+constexpr u32 ElfArmGlobDat = 21; /* Create GOT entry */
+constexpr u32 ElfArmJumpSlot = 22; /* Create PLT entry */
+constexpr u32 ElfArmRelative = 23; /* Adjust by program base */
+
+constexpr u32 ElfAArch64Copy = 1024; /* Copy symbol at runtime */
+constexpr u32 ElfAArch64GlobDat = 1025; /* Create GOT entry */
+constexpr u32 ElfAArch64JumpSlot = 1026; /* Create PLT entry */
+constexpr u32 ElfAArch64Relative = 1027; /* Adjust by program base */
+
+/* Program segment header. */
+
+struct Elf32_Phdr {
+ Elf32_Word p_type; /* Segment type */
+ Elf32_Off p_offset; /* Segment file offset */
+ Elf32_Addr p_vaddr; /* Segment virtual address */
+ Elf32_Addr p_paddr; /* Segment physical address */
+ Elf32_Word p_filesz; /* Segment size in file */
+ Elf32_Word p_memsz; /* Segment size in memory */
+ Elf32_Word p_flags; /* Segment flags */
+ Elf32_Word p_align; /* Segment alignment */
+};
+
+struct Elf64_Phdr {
+ Elf64_Word p_type; /* Segment type */
+ Elf64_Word p_flags; /* Segment flags */
+ Elf64_Off p_offset; /* Segment file offset */
+ Elf64_Addr p_vaddr; /* Segment virtual address */
+ Elf64_Addr p_paddr; /* Segment physical address */
+ Elf64_Xword p_filesz; /* Segment size in file */
+ Elf64_Xword p_memsz; /* Segment size in memory */
+ Elf64_Xword p_align; /* Segment alignment */
+};
+
+/* Legal values for p_type (segment type). */
+
+constexpr u32 ElfPtNull = 0; /* Program header table entry unused */
+constexpr u32 ElfPtLoad = 1; /* Loadable program segment */
+constexpr u32 ElfPtDynamic = 2; /* Dynamic linking information */
+constexpr u32 ElfPtInterp = 3; /* Program interpreter */
+constexpr u32 ElfPtNote = 4; /* Auxiliary information */
+constexpr u32 ElfPtPhdr = 6; /* Entry for header table itself */
+constexpr u32 ElfPtTls = 7; /* Thread-local storage segment */
+
+/* Legal values for p_flags (segment flags). */
+
+constexpr u32 ElfPfExec = 0; /* Segment is executable */
+constexpr u32 ElfPfWrite = 1; /* Segment is writable */
+constexpr u32 ElfPfRead = 2; /* Segment is readable */
+
+/* Dynamic section entry. */
+
+struct Elf32_Dyn {
+ Elf32_Sword d_tag; /* Dynamic entry type */
+ union {
+ Elf32_Word d_val; /* Integer value */
+ Elf32_Addr d_ptr; /* Address value */
+ } d_un;
+};
+
+struct Elf64_Dyn {
+ Elf64_Sxword d_tag; /* Dynamic entry type */
+ union {
+ Elf64_Xword d_val; /* Integer value */
+ Elf64_Addr d_ptr; /* Address value */
+ } d_un;
+};
+
+/* Legal values for d_tag (dynamic entry type). */
+
+constexpr u32 ElfDtNull = 0; /* Marks end of dynamic section */
+constexpr u32 ElfDtNeeded = 1; /* Name of needed library */
+constexpr u32 ElfDtPltRelSz = 2; /* Size in bytes of PLT relocs */
+constexpr u32 ElfDtPltGot = 3; /* Processor defined value */
+constexpr u32 ElfDtHash = 4; /* Address of symbol hash table */
+constexpr u32 ElfDtStrtab = 5; /* Address of string table */
+constexpr u32 ElfDtSymtab = 6; /* Address of symbol table */
+constexpr u32 ElfDtRela = 7; /* Address of Rela relocs */
+constexpr u32 ElfDtRelasz = 8; /* Total size of Rela relocs */
+constexpr u32 ElfDtRelaent = 9; /* Size of one Rela reloc */
+constexpr u32 ElfDtStrsz = 10; /* Size of string table */
+constexpr u32 ElfDtSyment = 11; /* Size of one symbol table entry */
+constexpr u32 ElfDtInit = 12; /* Address of init function */
+constexpr u32 ElfDtFini = 13; /* Address of termination function */
+constexpr u32 ElfDtRel = 17; /* Address of Rel relocs */
+constexpr u32 ElfDtRelsz = 18; /* Total size of Rel relocs */
+constexpr u32 ElfDtRelent = 19; /* Size of one Rel reloc */
+constexpr u32 ElfDtPltRel = 20; /* Type of reloc in PLT */
+constexpr u32 ElfDtTextRel = 22; /* Reloc might modify .text */
+constexpr u32 ElfDtJmpRel = 23; /* Address of PLT relocs */
+constexpr u32 ElfDtBindNow = 24; /* Process relocations of object */
+constexpr u32 ElfDtInitArray = 25; /* Array with addresses of init fct */
+constexpr u32 ElfDtFiniArray = 26; /* Array with addresses of fini fct */
+constexpr u32 ElfDtInitArraySz = 27; /* Size in bytes of DT_INIT_ARRAY */
+constexpr u32 ElfDtFiniArraySz = 28; /* Size in bytes of DT_FINI_ARRAY */
+constexpr u32 ElfDtSymtabShndx = 34; /* Address of SYMTAB_SHNDX section */
+
+} // namespace ELF
+} // namespace Common