diff options
Diffstat (limited to 'misc/exebin.mac')
-rw-r--r-- | misc/exebin.mac | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/misc/exebin.mac b/misc/exebin.mac index 8d1eaf8c..89c68898 100644 --- a/misc/exebin.mac +++ b/misc/exebin.mac @@ -1,57 +1,114 @@ ; -*- 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 + |