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; Structures describing fasm symbol files.

define FAS_SIGNATURE 1A736166h

virtual at 0

fas_header:

.signature      dd      ?       ; Signature 1A736166h.

.major          db      ?       ; Major version of flat assembler.

.minor          db      ?       ; Minor version of flat assembler.

.headersize     dw      ?       ; Length of header.

.input          dd      ?       ; Offset of input file name in the strings table.

.output         dd      ?       ; Offset of output file name in the strings table.

.strings_offs   dd      ?       ; Offset of strings table.

.strings_size   dd      ?       ; Length of strings table.

.symbols_offs   dd      ?       ; Offset of symbols table.

.symbols_size   dd      ?       ; Length of symbols table.

.preproc_offs   dd      ?       ; Offset of preprocessed source.

.preproc_size   dd      ?       ; Length of preprocessed source.

.asm_offs       dd      ?       ; Offset of assembly dump.

.asm_size       dd      ?       ; Length of assembly dump.

.section_offs   dd      ?       ; Offset of section names table.

.section_size   dd      ?       ; Length of section names table.

.symref_offs    dd      ?       ; Offset of symbol references dump.

.symref_size    dd      ?       ; Length of symbol references dump.

.size:

end virtual

virtual at 0

preproc_line_header:

; When the line was loaded from source, this field contains

; either zero (if it is the line from the main input file), or

; an offset inside the preprocessed source to the name of file,

; from which this line was loaded (the name of file is zero-ended

; string).

; When the line was generated by macroinstruction, this field

; contains offset inside the preprocessed source to the

; pascal-style string specifying the name of macroinstruction,

; which generated this line.

.source_name    dd      ?

; Bits 0-30 contain the number of this line.

; If the highest bit is zeroed, this line was loaded from source.

; If the highest bit is set, this line was generated by

; macroinstruction.

.line_number    dd      ?

; If the line was loaded from source, this field contains

; the position of the line inside the source file, from which it

; was loaded.

; If line was generated by macroinstruction, this field contains

; the offset of preprocessed line, which invoked the

; macroinstruction. If line was generated by instantaneous macro,

; this field is equal to the next one.

.line_offset    dd      ?

; If the line was generated by macroinstruction, this field

; contains offset of the preprocessed line inside the definition

; of macro, from which this one was generated.

.line_macro_offs dd     ?

; The tokenized contents of line.

.contents:

end virtual

virtual at 0

asm_row:

.out_offs       dd      ?       ; Offset in output file.

.preproc_offs   dd      ?       ; Offset of line in preprocessed source.

.this           dq      ?       ; Value of $ address.

.extended_sib   dd      ?       ; Extended SIB for the $ address, the first two bytes

                                ; are register codes and the second two bytes are

                                ; corresponding scales.

; If the $ address is relocatable, this field contains

; information about section or external symbol, to which

; it is relative - otherwise this field is zero.

; When the highest bit is cleared, the address is

; relative to a section, and the bits 0-30 contain

; the index (starting from 1) in the table of sections.

; When the highest bit is set, the address is relative

; to an external symbol, and the bits 0-30 contain the

; the offset of the name of this symbol in the strings

; table.

.this_base      dd      ?

.this_type      db      ?       ; Type of $ address value (as in table 2.2).

.code_type      db      ?       ; Type of code - possible values are 16, 32, and 64.

; If the bit 0 is set, then at this point the assembly

; was taking place inside the virtual block, and the

; offset in output file has no meaning here.

; If the bit 1 is set, the line was assembled at the

; point, which was not included in the output file for

; some other reasons (like inside the reserved data at

; the end of section).

.flags          db      ?

.this_high      db      ?       ; The higher bits of value of $ address.

.sizeof:

end virtual