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Diffstat (limited to 'ortho/mcode/elf32.ads')
| -rw-r--r-- | ortho/mcode/elf32.ads | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/ortho/mcode/elf32.ads b/ortho/mcode/elf32.ads new file mode 100644 index 0000000..5afd317 --- /dev/null +++ b/ortho/mcode/elf32.ads @@ -0,0 +1,124 @@ +-- ELF32 definitions. +-- Copyright (C) 2006 Tristan Gingold +-- +-- GHDL is free software; you can redistribute it and/or modify it under +-- the terms of the GNU General Public License as published by the Free +-- Software Foundation; either version 2, or (at your option) any later +-- version. +-- +-- GHDL is distributed in the hope that it will be useful, but WITHOUT ANY +-- WARRANTY; without even the implied warranty of MERCHANTABILITY or +-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +-- for more details. +-- +-- You should have received a copy of the GNU General Public License +-- along with GCC; see the file COPYING. If not, write to the Free +-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA +-- 02111-1307, USA. +with Interfaces; use Interfaces; +with System; +with Elf_Common; use Elf_Common; + +package Elf32 is + subtype Elf32_Addr is Unsigned_32; + subtype Elf32_Half is Unsigned_16; + subtype Elf32_Off is Unsigned_32; + subtype Elf32_Sword is Integer_32; + subtype Elf32_Word is Unsigned_32; + subtype Elf32_Uchar is Unsigned_8; + + type Elf32_Ehdr is record + E_Ident : E_Ident_Type; + E_Type : Elf32_Half; + E_Machine : Elf32_Half; + E_Version : Elf32_Word; + E_Entry : Elf32_Addr; + E_Phoff : Elf32_Off; + E_Shoff : Elf32_Off; + E_Flags : Elf32_Word; + E_Ehsize : Elf32_Half; + E_Phentsize : Elf32_Half; + E_Phnum : Elf32_Half; + E_Shentsize : Elf32_Half; + E_Shnum : Elf32_Half; + E_Shstrndx : Elf32_Half; + end record; + + Elf32_Ehdr_Size : constant Natural := Elf32_Ehdr'Size / System.Storage_Unit; + + type Elf32_Shdr is record + Sh_Name : Elf32_Word; + Sh_Type : Elf32_Word; + Sh_Flags : Elf32_Word; + Sh_Addr : Elf32_Addr; + Sh_Offset : Elf32_Off; + Sh_Size : Elf32_Word; + Sh_Link : Elf32_Word; + Sh_Info : Elf32_Word; + Sh_Addralign : Elf32_Word; + Sh_Entsize : Elf32_Word; + end record; + Elf32_Shdr_Size : constant Natural := Elf32_Shdr'Size / System.Storage_Unit; + + -- Symbol table. + type Elf32_Sym is record + St_Name : Elf32_Word; + St_Value : Elf32_Addr; + St_Size : Elf32_Word; + St_Info : Elf32_Uchar; + St_Other : Elf32_Uchar; + St_Shndx : Elf32_Half; + end record; + Elf32_Sym_Size : constant Natural := Elf32_Sym'Size / System.Storage_Unit; + + function Elf32_St_Bind (Info : Elf32_Uchar) return Elf32_Uchar; + function Elf32_St_Type (Info : Elf32_Uchar) return Elf32_Uchar; + function Elf32_St_Info (B, T : Elf32_Uchar) return Elf32_Uchar; + pragma Inline (Elf32_St_Bind); + pragma Inline (Elf32_St_Type); + pragma Inline (Elf32_St_Info); + + -- Relocation. + type Elf32_Rel is record + R_Offset : Elf32_Addr; + R_Info : Elf32_Word; + end record; + Elf32_Rel_Size : constant Natural := Elf32_Rel'Size / System.Storage_Unit; + + type Elf32_Rela is record + R_Offset : Elf32_Addr; + R_Info : Elf32_Word; + R_Addend : Elf32_Sword; + end record; + Elf32_Rela_Size : constant Natural := Elf32_Rela'Size / System.Storage_Unit; + + function Elf32_R_Sym (I : Elf32_Word) return Elf32_Word; + function Elf32_R_Type (I : Elf32_Word) return Elf32_Word; + function Elf32_R_Info (S, T : Elf32_Word) return Elf32_Word; + + -- For i386 + R_386_NONE : constant Elf32_Word := 0; -- none none + R_386_32 : constant Elf32_Word := 1; -- word32 S+A + R_386_PC32 : constant Elf32_Word := 2; -- word32 S+A-P + + -- For sparc + R_SPARC_NONE : constant Elf32_Word := 0; -- none + R_SPARC_32 : constant Elf32_Word := 3; -- (S + A) + R_SPARC_WDISP30 : constant Elf32_Word := 7; -- (S + A - P) >> 2 + R_SPARC_WDISP22 : constant Elf32_Word := 8; -- (S + A - P) >> 2 + R_SPARC_HI22 : constant Elf32_Word := 9; -- (S + A) >> 10 + R_SPARC_LO10 : constant Elf32_Word := 12; -- (S + A) & 0x3ff + R_SPARC_UA32 : constant Elf32_Word := 23; -- (S + A) + + type Elf32_Phdr is record + P_Type : Elf32_Word; + P_Offset : Elf32_Off; + P_Vaddr : Elf32_Addr; + P_Paddr : Elf32_Addr; + P_Filesz : Elf32_Word; + P_Memsz : Elf32_Word; + P_Flags : Elf32_Word; + P_Align : Elf32_Word; + end record; + Elf32_Phdr_Size : constant Natural := Elf32_Phdr'Size / System.Storage_Unit; +end Elf32; |