1/* SPDX-License-Identifier: GPL-2.0-only */ 2 3/* Macro to initialize stack, perform seeding if required and finally call the 4 * function provided 5 * @stack_top : First address above the stack 6 * @stack_bottom : Lowest address on the stack 7 * @seed : Stack seeding required (1=yes/otherwise=no) 8 * @func : Function to call after initializing stack 9 */ 10.macro stack_init stack_top, stack_bottom, seed, func 11 /* Check if stack seeding is required */ 12 mov r0, #\seed 13 cmp r0, #1 14 bne call_func 15 /* Stack seeding */ 16 ldr r0, =\stack_bottom 17 ldr r1, =\stack_top 18 ldr r2, =0xdeadbeef 19init_stack_loop: 20 str r2, [r0] 21 add r0, #4 22 cmp r0, r1 23 bne init_stack_loop 24 25call_func: 26 ldr sp, =\stack_top /* Set up stack pointer */ 27 bl \func 28.endm 29