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Diffstat (limited to 'include/common/asm_macros.S')
| -rw-r--r-- | include/common/asm_macros.S | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/include/common/asm_macros.S b/include/common/asm_macros.S new file mode 100644 index 00000000..8bcb7d28 --- /dev/null +++ b/include/common/asm_macros.S @@ -0,0 +1,133 @@ +/* + * 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 |