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Diffstat (limited to 'libgloss/msp430/crt_movedata.S')
-rw-r--r-- | libgloss/msp430/crt_movedata.S | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/libgloss/msp430/crt_movedata.S b/libgloss/msp430/crt_movedata.S new file mode 100644 index 000000000..ad9fa2799 --- /dev/null +++ b/libgloss/msp430/crt_movedata.S @@ -0,0 +1,50 @@ +/* Copyright (c) 2012-2013 Red Hat Incorporated. + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + + Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + The name of Red Hat Incorporated may not be used to endorse + or promote products derived from this software without specific + prior written permission. + + This software is provided by the copyright holders and contributors + "AS IS" and any express or implied warranties, including, but not + limited to, the implied warranties of merchantability and fitness for + a particular purpose are disclaimed. In no event shall Red Hat + incorporated be liable for any direct, indirect, incidental, special, + exemplary, or consequential damages (including, but not limited to, + procurement of substitute goods or services; loss of use, data, or + profits; or business interruption) however caused and on any theory of + liability, whether in contract, strict liability, or tort (including + negligence or otherwise) arising in any way out of the use of this + software, even if advised of the possibility of such damage. */ + +#include "memmodel.h" + + .section ".crt_movedata", "ax", @progbits + + .global __crt0_movedata +__crt0_movedata: + + mov_ #__datastart, R12 + mov_ #__romdatastart, R13 + + ;; memmove and memcpy do not currently work when src == dst + cmp_ R12, R13 + jeq 1f + + mov.w #__romdatacopysize, R14 +#ifdef __MSP430X_LARGE__ + clr.w R15 ; We assume that __romdatacopysize is never > 64M +#endif + call_ #memmove +1: |