eefacd1dfe
This patch adds VDSO support. The VDSO code is currently used for sys_rt_sigreturn() and optimised gettimeofday() (using the SoC timer counter). Signed-off-by: Vincent Chen <vincentc@andestech.com> Signed-off-by: Greentime Hu <greentime@andestech.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
22 lines
472 B
ArmAsm
22 lines
472 B
ArmAsm
// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) 2005-2017 Andes Technology Corporation
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#include <linux/linkage.h>
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#include <asm/page.h>
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ENTRY(__get_timerpage)
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sethi $r0, hi20(. + PAGE_SIZE + 8)
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ori $r0, $r0, lo12(. + PAGE_SIZE + 4)
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mfusr $r1, $pc
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sub $r0, $r1, $r0
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ret
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ENDPROC(__get_timerpage)
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ENTRY(__get_datapage)
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sethi $r0, hi20(. + 2*PAGE_SIZE + 8)
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ori $r0, $r0, lo12(. + 2*PAGE_SIZE + 4)
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mfusr $r1, $pc
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sub $r0, $r1, $r0
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ret
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ENDPROC(__get_datapage)
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