471 lines
10 KiB
PHP
471 lines
10 KiB
PHP
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macro struct? name
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macro end?.struct?!
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end namespace
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esc end struc
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virtual at 0
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name name
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sizeof.name = $
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end virtual
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purge end?.struct?
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end macro
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esc struc name
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label . : sizeof.name
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namespace .
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end macro
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struct SCNHDR
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s_name db 8 dup ?
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s_paddr dd ?
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s_vaddr dd ?
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s_size dd ?
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s_scnptr dd ?
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s_relptr dd ?
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s_lnnoptr dd ?
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s_nreloc dw ?
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s_nlnno dw ?
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s_flags dd ?
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end struct
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SCNHSZ = sizeof SCNHDR
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struct RELOC
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r_vaddr dd ?
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r_symndx dd ?
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r_type dw ?
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end struct
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RELSZ = sizeof RELOC
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struct SYMENT
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e_name db 8 dup ?
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virtual at e_name
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e_zeroes dd ?
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e_offset dd ?
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end virtual
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e_value dd ?
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e_scnum dw ?
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e_type dw ?
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e_sclass db ?
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e_numaux db ?
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end struct
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SYMESZ = sizeof SYMENT
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I386MAGIC = 0x14c
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F_RELFLG = 0x0001
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F_EXEC = 0x0002
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F_LNNO = 0x0004
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F_LSYMS = 0x0008
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F_AR32WR = 0x0100
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STYP_TEXT = 0x0020
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STYP_DATA = 0x0040
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STYP_BSS = 0x0080
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N_UNDEF = 0
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N_ABS = -1
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N_DEBUG = -2
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T_NULL = 0000b
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T_VOID = 0001b
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T_CHAR = 0010b
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T_SHORT = 0011b
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T_INT = 0100b
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T_LONG = 0101b
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T_FLOAT = 0110b
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T_DOUBLE = 0111b
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T_STRUCT = 1000b
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T_UNION = 1001b
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T_ENUM = 1010b
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T_MOE = 1011b
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T_UCHAR = 1100b
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T_USHORT = 1101b
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T_UINT = 1110b
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T_ULONG = 1111b
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T_LNGDBL = 01_0000b
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DT_NON = 00b
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DT_PTR = 01b
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DT_FCN = 10b
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DT_ARY = 11b
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C_NULL = 0
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C_AUTO = 1
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C_EXT = 2
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C_STAT = 3
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C_REG = 4
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C_EXTDEF = 5
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C_LABEL = 6
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C_ULABEL = 7
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C_MOS = 8
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C_ARG = 9
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C_STRTAG = 10
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C_MOU = 11
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C_UNTAG = 12
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C_TPDEF = 13
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C_USTATIC = 14
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C_ENTAG = 15
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C_MOE = 16
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C_REGPARM = 17
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C_FIELD = 18
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C_AUTOARG = 19
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C_LASTENT = 20
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C_BLOCK = 100
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C_FCN = 101
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C_EOS = 102
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C_FILE = 103
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C_LINE = 104
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C_ALIAS = 105
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C_HIDDEN = 106
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C_EFCN = 255
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RELOC_ADDR32 = 6
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RELOC_REL32 = 20
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COFF::
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namespace COFF
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Header:
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f_magic dw I386MAGIC
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f_nscns dw NUMBER_OF_SECTIONS
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f_timdat dd __TIME__
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f_symptr dd SYMBOL_TABLE_OFFSET
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f_nsyms dd NUMBER_OF_SYMBOLS
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f_opthdr dw 0
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f_flags dw F_AR32WR + F_LNNO
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Sections: db NUMBER_OF_SECTIONS * SCNHSZ dup 0
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virtual at 0
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symbol_table:: rb NUMBER_OF_SYMBOLS * SYMESZ
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end virtual
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virtual at 0
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string_table:: dd STRING_TABLE_SIZE
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STRING_POSITION = $
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rb STRING_TABLE_SIZE - $
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end virtual
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virtual at 0
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relocations:: rb NUMBER_OF_RELOCATIONS * RELSZ
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end virtual
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element relocatable?
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macro section_start
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local sym
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element sym : relocatable * (1+SECTION_INDEX) + SYMBOL_INDEX
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SECTION_BASE = sym
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org sym
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if DEFINED_SECTION | defined DEFAULT_SECTION
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store SECTION_NAME : 8 at symbol_table : SYMBOL_INDEX * SYMESZ + SYMENT.e_name
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store C_STAT at symbol_table : SYMBOL_INDEX * SYMESZ + SYMENT.e_sclass
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store 1+SECTION_INDEX at symbol_table : SYMBOL_INDEX * SYMESZ + SYMENT.e_scnum
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SYMBOL_INDEX = SYMBOL_INDEX + 1
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end if
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end macro
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RELOCATION_INDEX = 0
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SECTION_INDEX = 0
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SECTION_RELOCATION_INDEX = RELOCATION_INDEX
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SYMBOL_INDEX = 0
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SECTION_OFFSET = $%
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SECTION_ALIGN = 4
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SECTION_NAME = '.flat'
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SECTION_FLAGS = STYP_TEXT + STYP_DATA
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DEFINED_SECTION = 0
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section_start
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end namespace
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macro section?
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namespace COFF
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SECTION_SIZE = $% - SECTION_OFFSET
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if DEFINED_SECTION | SECTION_SIZE > 0
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if ~ DEFINED_SECTION
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DEFAULT_SECTION := 1
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end if
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if $%% = SECTION_OFFSET
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SECTION_FLAGS = SECTION_FLAGS or STYP_BSS
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SECTION_OFFSET = 0
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section $
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else
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UNINITIALIZED_LENGTH = $% - $%%
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section $
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db UNINITIALIZED_LENGTH dup 0
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end if
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store SECTION_NAME : 8 at COFF:Sections + SECTION_INDEX * SCNHSZ + SCNHDR.s_name
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store SECTION_OFFSET at COFF:Sections + SECTION_INDEX * SCNHSZ + SCNHDR.s_scnptr
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store SECTION_SIZE at COFF:Sections + SECTION_INDEX * SCNHSZ + SCNHDR.s_size
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store SECTION_FLAGS at COFF:Sections + SECTION_INDEX * SCNHSZ + SCNHDR.s_flags
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if RELOCATION_INDEX > SECTION_RELOCATION_INDEX
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store RELOCATION_INDEX - SECTION_RELOCATION_INDEX at COFF:Sections + SECTION_INDEX * SCNHSZ + SCNHDR.s_nreloc
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store RELOCATIONS_OFFSET + SECTION_RELOCATION_INDEX * RELSZ at COFF:Sections + SECTION_INDEX * SCNHSZ + SCNHDR.s_relptr
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end if
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SECTION_INDEX = SECTION_INDEX + 1
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end if
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end namespace
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end macro
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macro section? declaration*
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namespace COFF
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section
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DEFINED_SECTION = 1
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SECTION_FLAGS = 0
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SECTION_OFFSET = $%
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SECTION_ALIGN = 4
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match name attributes, declaration
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SECTION_NAME = name
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local seq,list
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define seq attributes
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while 1
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match car cdr, seq
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define list car
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define seq cdr
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else
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match any, seq
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define list any
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end match
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break
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end match
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end while
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irpv attribute, list
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match =code?, attribute
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SECTION_FLAGS = SECTION_FLAGS or STYP_TEXT
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else match =data?, attribute
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SECTION_FLAGS = SECTION_FLAGS or STYP_DATA
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else
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err 'unknown attribute "',`attribute,'"'
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end match
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end irpv
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else
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SECTION_NAME = declaration
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end match
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section_start
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SECTION_RELOCATION_INDEX = RELOCATION_INDEX
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end namespace
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end macro
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calminstruction align? boundary,value:?
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check COFF.SECTION_ALIGN mod (boundary) = 0
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jyes allowed
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err 'section not aligned enough'
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exit
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allowed:
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compute boundary, (boundary-1)-($-COFF.SECTION_BASE+boundary-1) mod boundary
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arrange value, =db boundary =dup value
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assemble value
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end calminstruction
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macro public? declaration*
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namespace COFF
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match =static? value =as? str, declaration
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SYMBOL_VALUE = value
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SYMBOL_NAME = string str
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SYMBOL_CLASS = C_STAT
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else match value =as? str, declaration
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SYMBOL_VALUE = value
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SYMBOL_NAME = string str
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SYMBOL_CLASS = C_EXT
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else match =static? value, declaration
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SYMBOL_VALUE = value
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SYMBOL_NAME = `value
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SYMBOL_CLASS = C_STAT
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else
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SYMBOL_VALUE = declaration
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SYMBOL_NAME = `declaration
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SYMBOL_CLASS = C_EXT
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end match
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if SYMBOL_VALUE relativeto 1 elementof SYMBOL_VALUE & 1 elementof (1 metadataof SYMBOL_VALUE) relativeto relocatable & 1 scaleof (1 metadataof SYMBOL_VALUE) > 0
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SYMBOL_SECTION_INDEX = 1 scaleof (1 metadataof SYMBOL_VALUE)
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SYMBOL_VALUE = SYMBOL_VALUE - 1 elementof SYMBOL_VALUE
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else
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SYMBOL_SECTION_INDEX = N_ABS
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end if
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if lengthof SYMBOL_NAME > 8
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store 0 at symbol_table : SYMBOL_INDEX * SYMESZ + SYMENT.e_zeroes
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store STRING_POSITION at symbol_table : SYMBOL_INDEX * SYMESZ + SYMENT.e_offset
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store SYMBOL_NAME : lengthof SYMBOL_NAME at string_table:STRING_POSITION
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STRING_POSITION = STRING_POSITION + lengthof SYMBOL_NAME + 1
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else
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store SYMBOL_NAME : 8 at symbol_table : SYMBOL_INDEX * SYMESZ + SYMENT.e_name
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end if
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store SYMBOL_VALUE at symbol_table : SYMBOL_INDEX * SYMESZ + SYMENT.e_value
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store SYMBOL_SECTION_INDEX at symbol_table : SYMBOL_INDEX * SYMESZ + SYMENT.e_scnum
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store SYMBOL_CLASS at symbol_table : SYMBOL_INDEX * SYMESZ + SYMENT.e_sclass
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SYMBOL_INDEX = SYMBOL_INDEX + 1
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end namespace
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end macro
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macro extrn? declaration*
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namespace COFF
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local sym,psym
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element sym : relocatable * (-1) + SYMBOL_INDEX
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match str =as? name:size, declaration
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label name:size at sym
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SYMBOL_NAME = string str
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else match name:size, declaration
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label name:size at sym
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SYMBOL_NAME = `name
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else match str =as? name, declaration
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label name at sym
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SYMBOL_NAME = string str
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else
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label declaration at sym
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SYMBOL_NAME = `declaration
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end match
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if lengthof SYMBOL_NAME > 8
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store 0 at symbol_table : SYMBOL_INDEX * SYMESZ + SYMENT.e_zeroes
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store STRING_POSITION at symbol_table : SYMBOL_INDEX * SYMESZ + SYMENT.e_offset
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store SYMBOL_NAME : lengthof SYMBOL_NAME at string_table:STRING_POSITION
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STRING_POSITION = STRING_POSITION + lengthof SYMBOL_NAME + 1
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else
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store SYMBOL_NAME : 8 at symbol_table : SYMBOL_INDEX * SYMESZ + SYMENT.e_name
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end if
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store C_EXT at symbol_table : SYMBOL_INDEX * SYMESZ + SYMENT.e_sclass
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SYMBOL_INDEX = SYMBOL_INDEX + 1
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end namespace
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end macro
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calminstruction calminstruction?.initsym? var*, val&
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publish var, val
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end calminstruction
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calminstruction calminstruction?.asm? line&
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local name, i
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initsym name, name.0
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match name.i, name
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compute i, i+1
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arrange name, name.i
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publish name, line
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arrange line, =assemble name
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assemble line
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end calminstruction
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calminstruction dword? value
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compute value, value
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check ~ value relativeto 0 & value relativeto 1 elementof value & 1 elementof (1 metadataof value) relativeto COFF.relocatable
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jyes addr32
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check ~ value relativeto 0 & (value + COFF.SECTION_BASE) relativeto 1 elementof (value + COFF.SECTION_BASE)
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jno plain
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check 1 elementof (1 metadataof (value + COFF.SECTION_BASE)) relativeto COFF.relocatable
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jyes rel32
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plain:
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emit 4, value
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exit
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local offset, symndx, type
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addr32:
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compute symndx, 0 scaleof (1 metadataof value)
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compute type, RELOC_ADDR32
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jump add_relocation
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rel32:
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compute value, value + COFF.SECTION_BASE
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compute symndx, 0 scaleof (1 metadataof value)
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compute type, RELOC_REL32
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jump add_relocation
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add_relocation:
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compute offset, $%
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emit 4, 0 scaleof value
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check $% > offset
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jno done
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compute offset, offset - COFF.SECTION_OFFSET
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local reloc
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compute reloc, COFF.RELOCATION_INDEX * RELSZ
|
||
|
|
asm store offset at COFF.relocations : reloc + RELOC.r_vaddr
|
||
|
|
asm store symndx at COFF.relocations : reloc + RELOC.r_symndx
|
||
|
|
asm store type at COFF.relocations : reloc + RELOC.r_type
|
||
|
|
compute COFF.RELOCATION_INDEX, COFF.RELOCATION_INDEX + 1
|
||
|
|
done:
|
||
|
|
end calminstruction
|
||
|
|
|
||
|
|
calminstruction dd? definitions&
|
||
|
|
local value, n
|
||
|
|
start:
|
||
|
|
match value=,definitions, definitions, ()
|
||
|
|
jyes recognize
|
||
|
|
match value, definitions
|
||
|
|
arrange definitions,
|
||
|
|
recognize:
|
||
|
|
match n =dup? value, value, ()
|
||
|
|
jyes duplicate
|
||
|
|
match ?, value
|
||
|
|
jyes reserve
|
||
|
|
call dword, value
|
||
|
|
next:
|
||
|
|
match , definitions
|
||
|
|
jno start
|
||
|
|
take , definitions
|
||
|
|
take definitions, definitions
|
||
|
|
jyes next
|
||
|
|
exit
|
||
|
|
reserve:
|
||
|
|
emit dword
|
||
|
|
jump next
|
||
|
|
duplicate:
|
||
|
|
match (value), value
|
||
|
|
stack:
|
||
|
|
check n
|
||
|
|
jno next
|
||
|
|
take definitions, value
|
||
|
|
arrange value, definitions
|
||
|
|
compute n, n - 1
|
||
|
|
jump stack
|
||
|
|
end calminstruction
|
||
|
|
|
||
|
|
calminstruction (label) dd? definitions&
|
||
|
|
local cmd
|
||
|
|
arrange cmd, =label label : =dword
|
||
|
|
assemble cmd
|
||
|
|
arrange cmd, =dd definitions
|
||
|
|
assemble cmd
|
||
|
|
end calminstruction
|
||
|
|
|
||
|
|
postpone
|
||
|
|
purge section?
|
||
|
|
section
|
||
|
|
namespace COFF
|
||
|
|
|
||
|
|
NUMBER_OF_SECTIONS := SECTION_INDEX
|
||
|
|
STRING_TABLE_SIZE := STRING_POSITION
|
||
|
|
NUMBER_OF_SYMBOLS := SYMBOL_INDEX
|
||
|
|
NUMBER_OF_RELOCATIONS := RELOCATION_INDEX
|
||
|
|
|
||
|
|
RELOCATIONS_OFFSET = $%
|
||
|
|
load byte_sequence : NUMBER_OF_RELOCATIONS * RELSZ from relocations:0
|
||
|
|
db byte_sequence
|
||
|
|
|
||
|
|
SYMBOL_TABLE_OFFSET = $%
|
||
|
|
load byte_sequence : NUMBER_OF_SYMBOLS * SYMESZ from symbol_table:0
|
||
|
|
db byte_sequence
|
||
|
|
|
||
|
|
load byte_sequence : STRING_TABLE_SIZE from string_table:0
|
||
|
|
db byte_sequence
|
||
|
|
|
||
|
|
end namespace
|
||
|
|
end postpone
|