;-------------------------------------------------------------------------- ; crtxpopbits.asm - C run-time: pop bits and other registers from xstack ; ; Copyright (C) 2009, Maarten Brock ; ; This library is free software; you can redistribute it and/or modify it ; under the terms of the GNU General Public License as published by the ; Free Software Foundation; either version 2, or (at your option) any ; later version. ; ; This library is distributed in the hope that it will be useful, ; but WITHOUT ANY WARRANTY; without even the implied warranty of ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ; GNU General Public License for more details. ; ; You should have received a copy of the GNU General Public License ; along with this library; see the file COPYING. If not, write to the ; Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, ; MA 02110-1301, USA. ; ; As a special exception, if you link this library with other files, ; some of which are compiled with SDCC, to produce an executable, ; this library does not by itself cause the resulting executable to ; be covered by the GNU General Public License. This exception does ; not however invalidate any other reasons why the executable file ; might be covered by the GNU General Public License. ;-------------------------------------------------------------------------- ;-------------------------------------------------------- ; overlayable bit register bank ;-------------------------------------------------------- .area BIT_BANK (REL,OVR,DATA) bits: .ds 1 ar0 = 0x00 ar1 = 0x01 .area HOME (CODE) ; Pop registers r0..r7 & bits from xstack (r0 always) ; Expect mask in B ___sdcc_xpop_regs_r0:: mov r0,_spx dec r0 movx a,@r0 ;pop R0 ljmp ___sdcc_xpop