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author | Kartik K. Agaram <vc@akkartik.com> | 2021-03-03 22:09:50 -0800 |
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committer | Kartik K. Agaram <vc@akkartik.com> | 2021-03-03 22:21:03 -0800 |
commit | 71e4f3812982dba2efb471283d310224e8db363e (patch) | |
tree | ea111a1acb8b8845dbda39c0e1b4bac1d198143b /tools/iso/kernel.soso/elf.h | |
parent | c6b928be29ac8cdb4e4d6e1eaa20420ff03e5a4c (diff) | |
download | mu-71e4f3812982dba2efb471283d310224e8db363e.tar.gz |
7842 - new directory organization
Baremetal is now the default build target and therefore has its sources at the top-level. Baremetal programs build using the phase-2 Mu toolchain that requires a Linux kernel. This phase-2 codebase which used to be at the top-level is now under the linux/ directory. Finally, the phase-2 toolchain, while self-hosting, has a way to bootstrap from a C implementation, which is now stored in linux/bootstrap. The bootstrap C implementation uses some literate programming tools that are now in linux/bootstrap/tools. So the whole thing has gotten inverted. Each directory should build one artifact and include the main sources (along with standard library). Tools used for building it are relegated to sub-directories, even though those tools are often useful in their own right, and have had lots of interesting programs written using them. A couple of things have gotten dropped in this process: - I had old ways to run on just a Linux kernel, or with a Soso kernel. No more. - I had some old tooling for running a single test at the cursor. I haven't used that lately. Maybe I'll bring it back one day. The reorg isn't done yet. Still to do: - redo documentation everywhere. All the README files, all other markdown, particularly vocabulary.md. - clean up how-to-run comments at the start of programs everywhere - rethink what to do with the html/ directory. Do we even want to keep supporting it? In spite of these shortcomings, all the scripts at the top-level, linux/ and linux/bootstrap are working. The names of the scripts also feel reasonable. This is a good milestone to take stock at.
Diffstat (limited to 'tools/iso/kernel.soso/elf.h')
-rw-r--r-- | tools/iso/kernel.soso/elf.h | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/tools/iso/kernel.soso/elf.h b/tools/iso/kernel.soso/elf.h deleted file mode 100644 index 984d6023..00000000 --- a/tools/iso/kernel.soso/elf.h +++ /dev/null @@ -1,184 +0,0 @@ -#ifndef ELF_H -#define ELF_H - -#include "common.h" - -/* - * ELF HEADER - */ -typedef struct { - unsigned char e_ident[16]; /* ELF identification */ - uint16 e_type; /* 2 (exec file) */ - uint16 e_machine; /* 3 (intel architecture) */ - uint32 e_version; /* 1 */ - uint32 e_entry; /* starting point */ - uint32 e_phoff; /* program header table offset */ - uint32 e_shoff; /* section header table offset */ - uint32 e_flags; /* various flags */ - uint16 e_ehsize; /* ELF header (this) size */ - - uint16 e_phentsize; /* program header table entry size */ - uint16 e_phnum; /* number of entries */ - - uint16 e_shentsize; /* section header table entry size */ - uint16 e_shnum; /* number of entries */ - - uint16 e_shstrndx; /* index of the section name string table */ -} Elf32_Ehdr; - -/* - * ELF identification - */ -#define EI_MAG0 0 -#define EI_MAG1 1 -#define EI_MAG2 2 -#define EI_MAG3 3 -#define EI_CLASS 4 -#define EI_DATA 5 -#define EI_VERSION 6 -#define EI_PAD 7 - -/* EI_MAG */ -#define ELFMAG0 0x7f -#define ELFMAG1 'E' -#define ELFMAG2 'L' -#define ELFMAG3 'F' - -/* EI_CLASS */ -#define ELFCLASSNONE 0 /* invalid class */ -#define ELFCLASS32 1 /* 32-bit objects */ -#define ELFCLASS64 2 /* 64-bit objects */ - -/* EI_DATA */ -#define ELFDATANONE 0 /* invalide data encoding */ -#define ELFDATA2LSB 1 /* least significant byte first (0x01020304 is 0x04 0x03 0x02 0x01) */ -#define ELFDATA2MSB 2 /* most significant byte first (0x01020304 is 0x01 0x02 0x03 0x04) */ - -/* EI_VERSION */ -#define EV_CURRENT 1 -#define ELFVERSION EV_CURRENT - -/* - * PROGRAM HEADER - */ -typedef struct { - uint32 p_type; /* type of segment */ - uint32 p_offset; - uint32 p_vaddr; - uint32 p_paddr; - uint32 p_filesz; - uint32 p_memsz; - uint32 p_flags; - uint32 p_align; -} Elf32_Phdr; - -/* p_type */ -#define PT_NULL 0 -#define PT_LOAD 1 -#define PT_DYNAMIC 2 -#define PT_INTERP 3 -#define PT_NOTE 4 -#define PT_SHLIB 5 -#define PT_PHDR 6 -#define PT_LOPROC 0x70000000 -#define PT_HIPROC 0x7fffffff - -/* p_flags */ -#define PF_X 0x1 -#define PF_W 0x2 -#define PF_R 0x4 - - - -enum eElfSectionTypes { - SHT_NULL, //0 - SHT_PROGBITS, //1 - SHT_SYMTAB, //2 - SHT_STRTAB, //3 - SHT_RELA, //4 - SHT_HASH, //5 - SHT_DYNAMIC, //6 - SHT_NOTE, //7 - SHT_NOBITS, //8 - SHT_REL, //9 - SHT_SHLIB, //A - SHT_DYNSYM, //B - SHT_LAST, //C - SHT_LOPROC = 0x70000000, - SHT_HIPROC = 0x7fffffff, - SHT_LOUSER = 0x80000000, - SHT_HIUSER = 0xffffffff -}; - - -typedef struct { - uint32 name; - uint32 type; - uint32 flags; - uint32 address; - uint32 offset; - uint32 size; - uint32 link; - uint32 info; - uint32 addralign; - uint32 entsize; -} Elf32_Scdr; - - - - - -enum { - R_386_NONE=0, // none - R_386_32, // S+A - R_386_PC32, // S+A-P - R_386_GOT32, // G+A-P - R_386_PLT32, // L+A-P - R_386_COPY, // none - R_386_GLOB_DAT, // S - R_386_JMP_SLOT, // S - R_386_RELATIVE, // B+A - R_386_GOTOFF, // S+A-GOT - R_386_GOTPC, // GOT+A-P - R_386_LAST // none -}; - -typedef struct { - uint16 d_tag; - uint32 d_val; //Also d_ptr -} Elf32_dyn; - - -enum { - DT_NULL, //!< Marks End of list - DT_NEEDED, //!< Offset in strtab to needed library - DT_PLTRELSZ, //!< Size in bytes of PLT - DT_PLTGOT, //!< Address of PLT/GOT - DT_HASH, //!< Address of symbol hash table - DT_STRTAB, //!< String Table address - DT_SYMTAB, //!< Symbol Table address - DT_RELA, //!< Relocation table address - DT_RELASZ, //!< Size of relocation table - DT_RELAENT, //!< Size of entry in relocation table - DT_STRSZ, //!< Size of string table - DT_SYMENT, //!< Size of symbol table entry - DT_INIT, //!< Address of initialisation function - DT_FINI, //!< Address of termination function - DT_SONAME, //!< String table offset of so name - DT_RPATH, //!< String table offset of library path - DT_SYMBOLIC,//!< Reverse order of symbol searching for library, search libs first then executable - DT_REL, //!< Relocation Entries (Elf32_Rel instead of Elf32_Rela) - DT_RELSZ, //!< Size of above table (bytes) - DT_RELENT, //!< Size of entry in above table - DT_PLTREL, //!< Relocation entry of PLT - DT_DEBUG, //!< Debugging Entry - Unknown contents - DT_TEXTREL, //!< Indicates that modifcations to a non-writeable segment may occur - DT_JMPREL, //!< Address of PLT only relocation entries - DT_LOPROC = 0x70000000, //!< Low Definable - DT_HIPROC = 0x7FFFFFFF //!< High Definable -}; - -BOOL isElf(char *elfData); -uint32 loadElf(char *elfData); - -#endif // ELF_H |