75 lines
1.8 KiB
ArmAsm
75 lines
1.8 KiB
ArmAsm
/*
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* Copyright (c) 2014-2016, NVIDIA Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include <asm/asm-offsets.h>
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#include <asm/ptrace.h>
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#include <linux/linkage.h>
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#include <linux/init.h>
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#ifdef CONFIG_ARM64
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/* uint32_t tlk_generic_smc(uint32_t arg0, uint32_t arg1, uint32_t arg2) */
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ENTRY(_tlk_generic_smc)
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smc #0
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ret
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ENDPROC(_tlk_generic_smc)
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ENTRY(tlk_fiq_glue_aarch64)
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sub sp, sp, #S_FRAME_SIZE
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stp x0, x1, [sp, #16 * 0]
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stp x2, x3, [sp, #16 * 1]
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stp x4, x5, [sp, #16 * 2]
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stp x6, x7, [sp, #16 * 3]
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stp x8, x9, [sp, #16 * 4]
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stp x10, x11, [sp, #16 * 5]
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stp x12, x13, [sp, #16 * 6]
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stp x14, x15, [sp, #16 * 7]
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stp x16, x17, [sp, #16 * 8]
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stp x18, x19, [sp, #16 * 9]
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stp x20, x21, [sp, #16 * 10]
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stp x22, x23, [sp, #16 * 11]
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stp x24, x25, [sp, #16 * 12]
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stp x26, x27, [sp, #16 * 13]
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stp x28, x29, [sp, #16 * 14]
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ldr x0, =0x82000006 /* get FIQ regs */
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smc #0
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stp x0, x1, [sp, #S_PC] /* original pc, cpsr */
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tst x1, PSR_MODE_MASK
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csel x2, x2, x3, eq /* sp el0, sp el1 */
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stp x30, x2, [sp, #S_LR] /* lr, original sp */
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mov x0, sp
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mov x1, x3
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bl tlk_fiq_handler /* handle FIQ exception */
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b .
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ENDPROC(tlk_fiq_glue_aarch64)
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ENTRY(_tlk_get_mair)
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mrs x0, mair_el1
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ret
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ENDPROC(_tlk_get_mair)
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#else
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ENTRY(_tlk_generic_smc)
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smc #0
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mov pc, lr
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ENDPROC(_tlk_generic_smc)
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ENTRY(_tlk_get_mair)
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mrc p15, 0, r0, c10, c2, 0
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mrc p15, 0, r1, c10, c2, 1
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mov pc, lr
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ENDPROC(_tlk_get_mair)
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#endif
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