aboutsummaryrefslogtreecommitdiff log msg author committer range
path: root/include/common/asm_macros.S
 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133  /* * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of ARM nor the names of its contributors may be used * to endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ .macro func_prologue stp x29, x30, [sp, #-0x10]! mov x29,sp .endm .macro func_epilogue ldp x29, x30, [sp], #0x10 .endm .macro dcache_line_size reg, tmp mrs \tmp, ctr_el0 ubfx \tmp, \tmp, #16, #4 mov \reg, #4 lsl \reg, \reg, \tmp .endm .macro icache_line_size reg, tmp mrs \tmp, ctr_el0 and \tmp, \tmp, #0xf mov \reg, #4 lsl \reg, \reg, \tmp .endm .macro smc_check label bl read_esr ubfx x0, x0, #ESR_EC_SHIFT, #ESR_EC_LENGTH cmp x0, #EC_AARCH64_SMC b.ne \$label .endm .macro setup_dcsw_op_args start_level, end_level, clidr, shift, fw, ls mrs \clidr, clidr_el1 mov \start_level, xzr ubfx \end_level, \clidr, \shift, \fw lsl \end_level, \end_level, \ls .endm /* * This macro verifies that the a given vector doesn't exceed the * architectural limit of 32 instructions. This is meant to be placed * immedately after the last instruction in the vector. It takes the * vector entry as the parameter */ .macro check_vector_size since .if (. - \since) > (32 * 4) .error "Vector exceeds 32 instructions" .endif .endm /* * This macro is used to create a function label and place the * code into a separate text section based on the function name * to enable elimination of unused code during linking */ .macro func _name .section .text.\_name, "ax" .type \_name, %function \_name: .endm /* * This macro declares an array of 1 or more stacks, properly * aligned and in the requested section */ #define STACK_ALIGN 6 .macro declare_stack _name, _section, _size, _count .if ((\_size & ((1 << STACK_ALIGN) - 1)) <> 0) .error "Stack size not correctly aligned" .endif .section \_section, "aw", %nobits .align STACK_ALIGN \_name: .space ((\_count) * (\_size)), 0 .endm /* * This macro calculates the base address of an MP stack using the * platform_get_core_pos() index, the name of the stack storage and * the size of each stack * In: X0 = MPIDR of CPU whose stack is wanted * Out: X0 = physical address of stack base * Clobber: X30, X1, X2 */ .macro get_mp_stack _name, _size bl platform_get_core_pos ldr x2, =(\_name + \_size) mov x1, #\_size madd x0, x0, x1, x2 .endm /* * This macro calculates the base address of a UP stack using the * name of the stack storage and the size of the stack * Out: X0 = physical address of stack base */ .macro get_up_stack _name, _size ldr x0, =(\_name + \_size) .endm