1/* 2 * Copyright (c) 2020, Google Inc. All rights reserved 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining 5 * a copy of this software and associated documentation files 6 * (the "Software"), to deal in the Software without restriction, 7 * including without limitation the rights to use, copy, modify, merge, 8 * publish, distribute, sublicense, and/or sell copies of the Software, 9 * and to permit persons to whom the Software is furnished to do so, 10 * subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be 13 * included in all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 22 */ 23 24#include <asm.h> 25#include <arch/asm_macros.h> 26 27.macro smc8_hvc8, instr 28 /* 29 * Save x8 (return value ptr) and lr. The SMC calling convention says el3 30 * does not need to preserve x8. The normal ABI does not require either x8 31 * or lr to be preserved. 32 */ 33 push x8, lr 34 \instr #0 35 pop x8, lr 36 37 /* Copy 8-register smc return value to struct smc_ret8 return value */ 38 stp x0, x1, [x8], #16 39 stp x2, x3, [x8], #16 40 stp x4, x5, [x8], #16 41 stp x6, x7, [x8], #16 42 43 ret 44.endm 45 46FUNCTION(smc8) 47 smc8_hvc8 smc 48 49FUNCTION(hvc8) 50 smc8_hvc8 hvc 51