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- /*
- * Copyright (c) 2014 Samsung Electronics Co., Ltd.
- *
- * This program 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 of the License, or
- * (at your option) any later version.
- *
- * This program 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.
- *
- */
- #include <linux/linkage.h>
- #include <linux/uh.h>
- SYM_CODE_START(uh_call)
- entry:
- stp x1, x0, [sp, #-16]!
- stp x3, x2, [sp, #-16]!
- stp x5, x4, [sp, #-16]!
- stp x7, x6, [sp, #-16]!
- back:
- smc #0x0
- /* save smc return result to x8 */
- mov x8, x0
- /* interrupted case does not need x0-x7 be restored */
- cmp x8, #0x1
- b.eq back
- ldp x7, x6, [sp], #16
- ldp x5, x4, [sp], #16
- ldp x3, x2, [sp], #16
- ldp x1, x0, [sp], #16
- cmp x8, #0x0
- /* busy return case does need x0-x7 be restored */
- b.ne entry
- ret
- SYM_CODE_END(uh_call)
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