442 lines
11 KiB
C
442 lines
11 KiB
C
/*
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* Mr. 4th Dimention - Allen Webster
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*
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* 20.11.2015
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*
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* DLL loader declarations for 4coder
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*
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*/
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// TOP
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struct DOS_Header {
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char signature[2];
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i16 lastsize;
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i16 nblocks;
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i16 nreloc;
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i16 hdrsize;
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i16 minalloc;
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i16 maxalloc;
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i16 ss;
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i16 sp;
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i16 checksum;
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i16 ip;
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i16 cs;
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i16 relocpos;
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i16 noverlay;
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i16 reserved1[4];
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i16 oem_id;
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i16 oem_info;
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i16 reserved2[10];
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i32 e_lfanew;
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};
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enum Target_Machine_Code{
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intel_i386 = 0x14C,
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intel_i860 = 0x14D,
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mips_r3000 = 0x162,
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mips_little_endian = 0x166,
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mips_r10000 = 0x168,
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old_alpha_axp = 0x183,
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alpha_axp = 0x184,
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hitachi_sh3 = 0x1a2,
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hitachi_sh3_dsp = 0x1a3,
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hitachi_sh4 = 0x1a6,
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hitachi_sh5 = 0x1a8,
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arm_little_endian = 0x1c0,
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thumb = 0x1c2,
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matsushita_am33 = 0x1d3,
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power_pc_little_endian = 0x1f0,
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power_pc_with_floating = 0x1f1,
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intel_ia64 = 0x200,
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mips16 = 0x266,
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motorola_68000_series = 0x268,
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alpha_axp_64_bit = 0x284,
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mips_with_fpu = 0x366,
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mips16_with_fpu = 0x466,
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eft_byte_code = 0xebc,
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amd_amd64 = 0x8664,
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mitsubishi_m32r_little_endian = 0x9041,
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clr_pure_msil = 0xc0ee
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};
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#define file_is_exe 0x2
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#define file_is_non_reloctable 0x200
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#define file_is_dll 0x2000
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struct COFF_Header{
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u16 machine;
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u16 number_of_sections;
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u32 time_date_stamp;
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u32 pointer_to_symbol_table;
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u32 number_of_symbols;
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u16 size_of_optional_header;
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u16 characteristics;
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};
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struct Data_Directory{
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u32 virtual_address;
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u32 size;
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};
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// This version is untested
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struct PE_Opt_Header_32Bit{
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// Universal Portion
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i16 signature;
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i8 major_linker_version;
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i8 minor_linker_version;
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i32 size_of_code;
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i32 size_of_initialized_data;
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i32 size_of_uninitialized_data;
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i32 address_of_entry_point;
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i32 base_of_code;
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i32 base_of_data;
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// Windows Portion
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i32 image_base;
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i32 section_alignment;
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i32 file_alignment;
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i16 major_OS_version;
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i16 minor_OS_version;
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i16 major_image_version;
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i16 minor_image_version;
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i16 major_subsystem_version;
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i16 minor_subsystem_version;
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i32 reserved;
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i32 size_of_image;
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i32 size_of_headers;
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i32 checksum;
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i16 subsystem;
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i16 DLL_characteristics;
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i32 size_of_stack_reserve;
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i32 size_of_stack_commit;
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i32 size_of_heap_reserve;
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i32 size_of_heap_commit;
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i32 loader_flags;
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i32 number_of_rva_and_sizes;
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Data_Directory data_directory[16];
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};
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struct PE_Opt_Header_64Bit{
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// Universal Portion
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u16 signature;
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u8 major_linker_version;
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u8 minor_linker_version;
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u32 size_of_code;
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u32 size_of_initialized_data;
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u32 size_of_uninitialized_data;
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u32 address_of_entry_point;
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u32 base_of_code;
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// Windows Portion
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u64 image_base;
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u32 section_alignment;
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u32 file_alignment;
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u16 major_OS_version;
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u16 minor_OS_version;
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u16 major_image_version;
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u16 minor_image_version;
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u16 major_subsystem_version;
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u16 minor_subsystem_version;
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u32 reserved;
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u32 size_of_image;
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u32 size_of_headers;
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u32 checksum;
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u16 subsystem;
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u16 DLL_characteristics;
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u64 size_of_stack_reserve;
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u64 size_of_stack_commit;
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u64 size_of_heap_reserve;
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u64 size_of_heap_commit;
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u32 loader_flags;
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u32 number_of_rva_and_sizes;
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Data_Directory data_directory[16];
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};
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#define bitsig_32bit 267
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#define bitsig_64bit 523
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#define image_dir_entry_export 0
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#define image_dir_entry_import 1
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#define image_dir_entry_resource 2
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#define image_dir_base_reloc_table 5
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#define image_dir_entry_bound_import 11
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struct PE_Section_Definition{
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char name[8];
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u32 loaded_size;
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u32 loaded_location;
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u32 disk_size;
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u32 disk_location;
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u32 disk_relocs;
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u32 reserved1;
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u16 number_of_relocs;
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u16 reserved2;
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u32 flags;
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};
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#define image_scn_type_no_pad 0x00000008
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#define image_scn_cnt_code 0x00000020
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#define image_scn_cnt_initialized_data 0x00000040
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#define image_scn_cnt_uninitialized_data 0x00000080
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#define image_scn_lnk_other 0x00000100
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#define image_scn_lnk_info 0x00000200
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#define image_scn_lnk_remove 0x00000800
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#define image_scn_lnk_comdat 0x00001000
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#define image_scn_no_defer_spec_exc 0x00004000
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#define image_scn_gprel 0x00008000
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#define image_scn_mem_fardata 0x00008000
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#define image_scn_mem_purgeable 0x00020000
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#define image_scn_mem_16BIT 0x00020000
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#define image_scn_mem_locked 0x00040000
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#define image_scn_mem_preload 0x00080000
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#define image_scn_align_1bytes 0x00100000
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#define image_scn_align_2bytes 0x00200000
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#define image_scn_align_4bytes 0x00300000
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#define image_scn_align_8bytes 0x00400000
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#define image_scn_align_16bytes 0x00500000
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#define image_scn_align_32bytes 0x00600000
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#define image_scn_align_64bytes 0x00700000
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#define image_scn_align_128bytes 0x00800000
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#define image_scn_align_256bytes 0x00900000
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#define image_scn_align_512bytes 0x00A00000
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#define image_scn_align_1024bytes 0x00B00000
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#define image_scn_align_2048bytes 0x00C00000
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#define image_scn_align_4096bytes 0x00D00000
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#define image_scn_align_8192bytes 0x00E00000
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#define image_scn_align_mask 0x00F00000
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#define image_scn_lnk_nreloc_ovfl 0x01000000
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#define image_scn_mem_discardable 0x02000000
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#define image_scn_mem_not_cached 0x04000000
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#define image_scn_mem_not_paged 0x08000000
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#define image_scn_mem_shared 0x10000000
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#define image_scn_mem_execute 0x20000000
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#define image_scn_mem_read 0x40000000
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#define image_scn_mem_write 0x80000000
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#pragma pack(push, 1)
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struct COFF_Relocation{
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u32 virtual_address;
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u32 symbol_table_index;
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u16 type;
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};
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#pragma pack(pop)
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enum Image_Rel_Amd64{
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image_rel_amd64_absolute = 0x00,
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image_rel_amd64_addr64 = 0x01,
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image_rel_amd64_addr32 = 0x02,
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image_rel_amd64_addr32nb = 0x03,
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image_rel_amd64_rel32 = 0x04,
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image_rel_amd64_rel32_1 = 0x05,
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image_rel_amd64_rel32_2 = 0x06,
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image_rel_amd64_rel32_3 = 0x07,
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image_rel_amd64_rel32_4 = 0x08,
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image_rel_amd64_rel32_5 = 0x09,
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image_rel_amd64_section = 0x0A,
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image_rel_amd64_secrel = 0x0B,
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image_rel_amd64_secrel7 = 0x0C,
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image_rel_amd64_token = 0x0D,
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image_rel_amd64_srel32 = 0x0E,
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image_rel_amd64_pair = 0x0F,
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image_rel_amd64_sspan32 = 0x10
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};
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enum Image_Rel_Arm{
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image_rel_arm_absolute = 0x0,
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image_rel_arm_addr32 = 0x1,
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image_rel_arm_addr32nb = 0x2,
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image_rel_arm_branch24 = 0x3,
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image_rel_arm_branch11 = 0x4,
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image_rel_arm_token = 0x5,
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image_rel_arm_blx24 = 0x6,
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image_rel_arm_blx11 = 0x7,
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image_rel_arm_section = 0x8,
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image_rel_arm_secrel = 0x9,
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image_rel_arm_mov32a = 0xA,
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image_rel_arm_mov32t = 0xB,
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image_rel_arm_branch20t = 0xC,
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image_rel_arm_branch24t = 0xD,
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image_rel_arm_blx32t = 0xE
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};
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enum Image_Rel_Arm64{
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image_rel_arm64_absolute = 0x0,
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image_rel_arm64_addr32 = 0x1,
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image_rel_arm64_addr32nb = 0x2,
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image_rel_arm64_branch26 = 0x3,
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image_rel_arm64_pagebase_rel21 = 0x4,
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image_rel_arm64_rel21 = 0x5,
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image_rel_arm64_pageoffset_12a = 0x6,
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image_rel_arm64_pageoffset_12l = 0x7,
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image_rel_arm64_secrel = 0x8,
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image_rel_arm64_secrel_low12a = 0x9,
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image_rel_arm64_secrel_high12a = 0xA,
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image_rel_arm64_secrel_low12l = 0xB,
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image_rel_arm64_token = 0xC,
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image_rel_arm64_section = 0xD,
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image_rel_arm64_addr64 = 0xE
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};
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// NOTE(allen):
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// skipped Hitachi SuperH
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// skiiped IBM PowerPC
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enum Image_Rel_i386{
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image_rel_i386_absolute = 0x0,
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image_rel_i386_dir16 = 0x1,
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image_rel_i386_rel16 = 0x2,
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image_rel_i386_dir32 = 0x3,
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image_rel_i386_dir32nb = 0x4,
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image_rel_i386_seg12 = 0x5,
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image_rel_i386_section = 0x6,
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image_rel_i386_secrel = 0x7,
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image_rel_i386_token = 0x8,
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image_rel_i386_secrel7 = 0x9,
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image_rel_i386_rel32 = 0xA
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};
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// NOTE(allen):
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// skipped ia64
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// skipped MIPS
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// skiiped Mitsubishi
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struct Relocation_Block_Header{
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u32 page_base_offset;
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u32 block_size;
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};
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#define reloc_entry_type_mask 0xF000
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#define reloc_entry_type_shift 12
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#define reloc_entry_offset_mask 0x0FFF
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struct Relocation_Block_Entry{
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u16 entry;
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};
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enum DLL_Relocation_Type{
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image_base_absolute,
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// nothing
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image_base_high,
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// add high 16 bits of diff to 16 bits at offset
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image_base_low,
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// add low 16 bits of diff to 16 bits at offset
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image_base_highlow,
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// adds all 32 bits to 32 bits at offset
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image_base_highadj,
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// consumes two slots: high 16 bits at location, low 16 bits at next location
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image_base_arm_mov32a,
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// mips: jump instruction; arm: MOVW+MOVT
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image_base_reserved1,
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image_base_arm_mov32t,
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// MOVW+MOVT in Thumb mode
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image_base_reserved2,
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image_base_mips_jmpaddr16,
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// mips16 jump instruction
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image_base_dir64
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// adds to 64 bits field
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};
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struct DLL_Data{
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DOS_Header *dos_header;
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COFF_Header *coff_header;
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PE_Opt_Header_32Bit *opt_header_32;
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PE_Opt_Header_64Bit *opt_header_64;
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PE_Section_Definition *section_defs;
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b32 is_64bit;
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};
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struct DLL_Loaded{
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DOS_Header *dos_header;
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COFF_Header *coff_header;
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PE_Opt_Header_32Bit *opt_header_32;
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PE_Opt_Header_64Bit *opt_header_64;
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PE_Section_Definition *section_defs;
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b32 is_64bit;
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Data img;
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u32 export_start;
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u32 text_start;
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u32 text_size;
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};
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struct DLL_Export_Directory_Table{
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u32 export_flags;
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u32 time_date_stamp;
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u16 major_version;
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u16 minor_version;
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u32 name_offset;
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u32 ordinal_base;
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u32 number_of_addresses;
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u32 number_of_name_pointers;
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u32 address_offset;
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u32 name_pointer_offset;
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u32 ordinal_offset;
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};
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struct DLL_Export_Address{
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u32 export_offset;
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};
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struct DLL_Export_Name{
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u32 name_offset;
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};
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struct DLL_Export_Ordinal{
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u16 ordinal;
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};
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struct DLL_Debug_Entry{
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u32 characteristics;
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u32 time_date_stamp;
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u16 major_version;
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u16 minor_version;
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u32 type;
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u32 size_of_data;
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u32 offset_of_data;
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u32 disk_offset_of_data;
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} thingy;
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enum DLL_Debug_Type{
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img_dbg_type_unknown,
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img_dbg_type_coff,
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img_dbg_type_codeview,
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img_dbg_type_fpo,
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img_dbg_type_misc,
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img_dbg_type_exception,
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img_dbg_type_fixup,
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img_dbg_type_omap_to_src,
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img_dbg_type_omap_from_src
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};
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char DOS_error_message[] = "This program cannot be run in DOS mode.";
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i32 DOS_error_offset = 0x4E;
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i32 DOS_error_size = sizeof(DOS_error_message) - 1;
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char PE_header[] = {'P', 'E', 0, 0};
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i32 PE_header_size = 4;
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// BOTTOM
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