diff options
Diffstat (limited to 'exebin.mac')
| -rw-r--r-- | exebin.mac | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/exebin.mac b/exebin.mac new file mode 100644 index 00000000..8d1eaf8c --- /dev/null +++ b/exebin.mac @@ -0,0 +1,57 @@ +; -*- 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 |