armmacros.inc

来自「ARM9基于WINDOWSCE的BSP源代码」· INC 代码 · 共 87 行

;
;   The content of this file or document is CONFIDENTIAL and PROPRIETARY
;   to Jade Technologies Co., Ltd.  It is subjected to the terms of a
;   License Agreement between Licensee and Jade Technologies Co., Ltd.
;   restricting among other things, the use, reproduction, distribution
;   and transfer.  Each of the embodiments, including this information 
;   and any derivative work shall retain this copyright notice.
; 
;   Copyright (c) 2004 - 2005 Jade Technologies Co., Ltd. 
;   All rights reserved.
;
; ----------------------------------------------------------------
; File:     armmacros.inc,v
; Revision: 1.0
; ----------------------------------------------------------------
; $

;/***********************************************************************
; NOTE: The CALL and CALLEQ macros shouldn't be used in OS startup code
;       before the MMU is enabled since in the Thumbing case it relies
;       on an absolute address which will be virtual in the case of the
;       OS code and if the MMU isn't enabled, all branches should be
;       relative (or a computed physical address).
;***********************************************************************/

  IF Interworking :LOR: Thumbing

    MACRO
    CALL $Fn
    ldr     r12, =$Fn
    mov     lr, pc
    bx      r12
    MEND

    MACRO
    CALLEQ $Fn
    ldreq   r12, =$Fn
    moveq   lr, pc
    bxeq    r12
    MEND

    MACRO
    RETURN
    bx      lr
    MEND

    MACRO
    RETURN_EQ
    bxeq    lr
    MEND

    MACRO
    RETURN_NE
    bxne    lr
    MEND

  ELSE

    MACRO
    CALL $Fn
    bl      $Fn
    MEND

    MACRO
    CALLEQ $Fn
    bleq    $Fn
    MEND

    MACRO
    RETURN
    mov     pc, lr
    MEND

    MACRO
    RETURN_EQ
    moveq   pc, lr
    MEND

    MACRO
    RETURN_NE
    movne   pc, lr
    MEND

  ENDIF

    END