#include "syscall.h" .sect .text; .sect .rom; .sect .data; .sect .bss; .sect .text .define _sbrk,_brk _sbrk: move.l 4(sp),d0 add.l #3,d0 move.l #~3,d1 and.l d1,d0 move.l d0,a0 move.l curbrk,d0 add.l #3,d0 and.l d1,d0 move.l d0,curbrk add.l d0,a0 move.l a0,4(sp) pea 17 ! not SYS_sbrk trap #0 bcs 1f move.l curbrk,d0 move.l 4(sp),curbrk rts 1: jmp cerror _brk: move.l 4(sp),d0 add.l #3,d0 move.l #~3,d1 and.l d1,d0 move.l d0,4(sp) pea 17 trap #0 bcs 1b move.l 4(sp),curbrk clr.l d0 rts .sect .data curbrk: .data4 endbss