c608ada288
Recent change (https://gcc.gnu.org/pipermail/gcc-cvs/2023-December/394915.html) added a generic SME support using `.hidden`, `.type`, and ``.size` pseudo-ops in the assembly sources, `aarch64-w64-mingw32` does not support the pseudo-ops though. This patch wraps usage of those pseudo-ops using macros and ifdefs them for `__ELF__` define. libgcc/ * config/aarch64/aarch64-asm.h (HIDDEN, SYMBOL_SIZE, SYMBOL_TYPE) (ENTRY_ALIGN, GNU_PROPERTY): New macros. * config/aarch64/__arm_sme_state.S: Use them. * config/aarch64/__arm_tpidr2_save.S: Likewise. * config/aarch64/__arm_za_disable.S: Likewise. * config/aarch64/crti.S: Likewise. * config/aarch64/lse.S: Likewise.
70 lines
2.1 KiB
ArmAsm
70 lines
2.1 KiB
ArmAsm
/* Support routine for SME.
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Copyright (C) 2023-2024 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3, or (at your
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option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "aarch64-asm.h"
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/* Disable ZA. Call ABI:
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- Private ZA, streaming-compatible.
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- x0-x13, x19-x29, sp and fp regs are call preserved.
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- Takes no argument.
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- Does not return a value.
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- Can abort on failure (then registers are not preserved). */
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HIDDEN (__aarch64_have_sme)
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HIDDEN (__libgcc_arm_tpidr2_save)
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variant_pcs (__arm_za_disable)
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ENTRY (__arm_za_disable)
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/* Check if SME is available. */
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adrp x14, __aarch64_have_sme
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ldrb w14, [x14, :lo12:__aarch64_have_sme]
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cbz w14, L(end)
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.inst 0xd53bd0ae /* mrs x14, tpidr2_el0 */
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cbz x14, L(end)
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PACIASP
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stp x29, x30, [sp, -16]!
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.cfi_adjust_cfa_offset 16
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.cfi_rel_offset x29, 0
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.cfi_rel_offset x30, 8
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mov x29, sp
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bl __libgcc_arm_tpidr2_save
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.inst 0xd51bd0bf /* msr tpidr2_el0, xzr */
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.inst 0xd503447f /* smstop za */
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ldp x29, x30, [sp], 16
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.cfi_adjust_cfa_offset -16
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.cfi_restore x29
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.cfi_restore x30
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AUTIASP
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L(end):
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ret
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END (__arm_za_disable)
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/* Hidden alias used by the unwinder. */
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.global __libgcc_arm_za_disable
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HIDDEN (__libgcc_arm_za_disable)
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.set __libgcc_arm_za_disable, __arm_za_disable
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