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+; -*- nasm -*-
+
+; NASM macro file to allow the `bin' output format to generate
+
+; simple .EXE files by constructing the EXE header by hand.
+
+; Adapted from a contribution by Yann Guidon <whygee_corp@hol.fr>
+
+
+
+%define EXE_stack_size EXE_realstacksize
+
+
+
+%macro EXE_begin 0
+
+ ORG 0E0h
+
+ section .text
+
+
+
+header_start:
+
+ db 4Dh,5Ah ; EXE file signature
+
+ dw EXE_allocsize % 512
+
+ dw (EXE_allocsize + 511) / 512
+
+ dw 0 ; relocation information: none
+
+ dw (header_end-header_start)/16 ; header size in paragraphs
+
+ dw (EXE_absssize + EXE_realstacksize) / 16 ; min extra mem
+
+ dw (EXE_absssize + EXE_realstacksize) / 16 ; max extra mem
+
+ dw -10h ; Initial SS (before fixup)
+
+ dw EXE_endbss + EXE_realstacksize ; Initial SP (1K DPMI+1K STACK)
+
+ dw 0 ; (no) Checksum
+
+ dw 100h ; Initial IP - start just after the header
+
+ dw -10h ; Initial CS (before fixup)
+
+ dw 0 ; file offset to relocation table: none
+
+ dw 0 ; (no overlay)
+
+ align 16,db 0
+
+header_end:
+
+
+
+EXE_startcode:
+
+ section .data
+
+EXE_startdata:
+
+ section .bss
+
+EXE_startbss:
+
+%endmacro
+
+
+
+%macro EXE_stack 1
+
+EXE_realstacksize equ %1
+
+%define EXE_stack_size EXE_bogusstacksize ; defeat EQU in EXE_end
+
+%endmacro
+
+
+
+%macro EXE_end 0
+
+ section .text
+
+EXE_endcode:
+
+ section .data
+
+EXE_enddata:
+
+ section .bss
+
+ alignb 4
+
+EXE_endbss:
+
+
+
+EXE_acodesize equ (EXE_endcode-EXE_startcode+3) & (~3)
+
+EXE_datasize equ EXE_enddata-EXE_startdata
+
+EXE_absssize equ (EXE_endbss-EXE_startbss+3) & (~3)
+
+EXE_allocsize equ EXE_acodesize + EXE_datasize
+
+
+
+EXE_stack_size equ 0x800 ; default if nothing else was used
+
+%endmacro
+