/*
* Copyright (c) 2020, Google Inc. All rights reserved
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <asm.h>
.macro smc8_hvc8, instr
/* Save stack location where r3-r7 smc/hvc arguments are stored */
mov r12, sp
/* Save original r4-r7 values as caller expects these to be preserved */
push {r4-r7}
/* Save return value pointer and return address */
push {r0, lr}
/* arm abi shifts arguments when returning a struct, shift them back */
mov r0, r1
mov r1, r2
mov r2, r3
/* Load stack based arguments */
ldmia r12, {r3-r7}
\instr #0
/* Restore return address and get return value pointer */
pop {r12, lr}
/* Copy 8-register smc return value to struct smc_ret8 return value */
stmia r12, {r0-r7}
/* Restore original r4-r7 values */
pop {r4-r7}
/* Return */
bx lr
.endm
FUNCTION(smc8)
smc8_hvc8 smc
FUNCTION(hvc8)
smc8_hvc8 hvc
FUNCTION(arm_smccc_invoke8)
#if ARM_SMCCC_CONDUIT_IS_HVC
smc8_hvc8 hvc
#else
smc8_hvc8 smc
#endif
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