add lestub.nasm
This commit is contained in:
Lucia Ceionia
parent
4b7f25c798
commit
5c29ef41ff
148
src/lestub.nasm
Normal file
148
src/lestub.nasm
Normal file
@ -0,0 +1,148 @@
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[MAP ALL]
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[SECTION MZ start=0x0000]
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dw 'MZ' ; 00 magic num
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dw 0x0000 ; 02 bytes in last block
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dw 0x0006 ; 04 blocks in EXE
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dw 0x0000 ; 06 relocations
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dw 0x0004 ; 08 paragraphs in header
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dw 0x0000 ; 0A paragraphs of additional memory (BSS)
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dw 0xffff ; 0C max extra mem
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dw 0x0000 ; 0E stack segment relative value
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dw 0x0500 ; 10 inital value of SP
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dw 0x0000 ; 12 checksum (0)
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dw 0x0000 ; 14 inital value of IP
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dw 0x0000 ; 16 inital value of CS
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dw 0x0040 ; 18 offset of first relocation (0x40 for LE)
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dw 0x0000 ; 1A overlay num, 0 for main program
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TIMES 0x3C - ($ - $$) db 0
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dd 0x00000080 ; 3C LE header offset
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[SECTION MSDOS start=0x0040 vstart=0x0000]
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; MS-DOS Stub
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[BITS 16]
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push cs
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pop ds
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mov dx,stubtext
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mov ah,0x9
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int 0x21
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mov ax,0x4c01
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int 0x21
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stubtext: db `This program cannot be run in DOS mode. (idiot)\r\n$`
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[SECTION LE start=0x0080]
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; LE header
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LE_HEADER:
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dw 'LE' ; 00 LE signature
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db 0x00 ; 02 Byte order (little-endian)
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db 0x00 ; 03 Word order (little-endian)
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dd 0x00000000 ; 04 executable format level
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dw 0x0002 ; 08 CPU type (i386)
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dw 0x0001 ; 0A Target OS (OS/2)
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dd 0x00000000 ; 0C Module version
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dd 0x00000200 ; 10 Module type flags
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dd 0x00000002 ; 14 Number of memory pages
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dd 0x00000001 ; 18 Inital object CS number
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dd 0x00000000 ; 1C Inital EIP
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dd 0x00000002 ; 20 Inital object SS number
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dd 0x00080008 ; 24 Inital ESP
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dd 0x00001000 ; 28 Memory page size
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dd 0x00001000 ; 2C Bytes on last page
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dd 0x00000100 ; 30 Fix-up section size
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dd 0x00000000 ; 34 Fix-up section checksum
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dd 0x00000000 ; 38 Loader section size
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dd 0x00000000 ; 3C Loader section checksum
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dd 0x000000c4 ; 40 Offset of object table
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dd 0x00000002 ; 44 Object table entries
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dd 0x000000f4 ; 48 Object page map offset
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dd 0x00000000 ; 4C Object iterate data map offset
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dd 0x000000fc ; 50 Resource table offset
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dd 0x00000000 ; 54 Resource table entries
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dd 0x000000fc ; 58 Resident name tables offset
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dd 0x00000105 ; 5C Entry table offset
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dd 0x00000000 ; 60 Module directives table offset
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dd 0x00000000 ; 64 Module directives entry
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dd 0x00000106 ; 68 Fix-up page table offset
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dd 0x00000112 ; 6C Fix-up record table offset
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dd 0x00000000 ; 70 Imported modules name table offset
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dd 0x00000000 ; 74 Imported modules count
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dd 0x00000000 ; 78 Imported procedure name table offset
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dd 0x00000000 ; 7C Per-page checksum table offset
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dd 0x00001000 ; 80 Data pages offset from top of file
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dd 0x00000000 ; 84 Preload page count
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dd 0x00000000 ; 88 Non-resident names table offset from top of file
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dd 0x00000000 ; 8C Non-resident names table length
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dd 0x00000000 ; 90 Non-resident names table checksum
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dd 0x00000000 ; 94 Automatic data object
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dd 0x00000000 ; 98 Debug information offset
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dd 0x00000000 ; 9C Debug information length
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dd 0x00000000 ; A0 Preload instance pages number
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dd 0x00000000 ; A4 Demand instance pages number
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dd 0x00000000 ; A8 Extra heap allocation
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dd 0x00000000 ; AC ???
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TIMES 0xC4 - ($ - LE_HEADER) db 0
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; Object Table
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; CS @ C4h
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dd 0x00080000 ; 00 Virtual segment size
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dd 0x00000000 ; 04 Relocation base address
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dd 0x00002045 ; 08 Object flags
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dd 0x00000001 ; 0C Page map index
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dd 0x00000001 ; 10 Page map entries
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dd 0x00000000 ; 14 ???
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; SS @ DCh
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dd 0x00080080 ; 00 Virtual segment size
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dd 0x00070000 ; 04 Relocation base address
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dd 0x00002043 ; 08 Object flags
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dd 0x00000002 ; 0C Page map index
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dd 0x00000001 ; 10 Page map entries
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dd 0x00000000 ; 14 ???
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; Page Map @ F4
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; 3 byte Page Number, 1 byte Flags
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; 1, Code
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db 0x00, 0x00, 0x01 ; 3 byte Page Number
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db 0x00 ; Flags
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db 0x00, 0x00, 0x02 ; 3 byte Page Number
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db 0x00 ; Flags
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; Resource Table (0) & Resident Name Table
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db 5 ; String Length
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db 'hello' ; ASCII string
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dw 0x0000 ; Ordinal Number
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db 0x00 ; ???
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; 105h Entry Table?
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db 0x00
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; 106h Fixup Page Table
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dd 0x00000000 ; Record Offset of Page 1
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dd 0x00000007 ; Record Offset of Page 2
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dd 0x0000000E ; End of Records
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; 112h Fixup Record Table
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fixup_table_start:
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db 0x07, 0x00 ; 32-bit internal relocation
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dw 0x0000 ; source offset in page
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db 0x01 ; target object
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dw 0x0000 ; text - entry ; target offset
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db 0x07, 0x00 ; 32-bit internal relocation
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dw 0x0000 ; source offset in page
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db 0x02 ; target object
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dw 0x0000 ; target offset
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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db 0x07, 0x00, 0xff, 0x00, 0x01, 0x01, 0x00
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fixup_table_end:
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