| 1 | //===- ArmSMEStub.cpp - ArmSME ABI routine stubs --------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "llvm/Support/Compiler.h" |
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| 10 | #include <cstdint> |
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| 11 | #include <iostream> |
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| 12 | |
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| 13 | #if (defined(_WIN32) || defined(__CYGWIN__)) |
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| 14 | #ifndef MLIR_ARMSMEABISTUBS_EXPORTED |
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| 15 | #ifdef mlir_arm_sme_abi_stubs_EXPORTS |
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| 16 | // We are building this library |
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| 17 | #define MLIR_ARMSMEABISTUBS_EXPORTED __declspec(dllexport) |
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| 18 | #else |
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| 19 | // We are using this library |
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| 20 | #define MLIR_ARMSMEABISTUBS_EXPORTED __declspec(dllimport) |
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| 21 | #endif // mlir_arm_sme_abi_stubs_EXPORTS |
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| 22 | #endif // MLIR_ARMSMEABISTUBS_EXPORTED |
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| 23 | #else |
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| 24 | #define MLIR_ARMSMEABISTUBS_EXPORTED \ |
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| 25 | __attribute__((visibility("default"))) LLVM_ATTRIBUTE_WEAK |
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| 26 | #endif // (defined(_WIN32) || defined(__CYGWIN__)) |
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| 27 | |
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| 28 | // The actual implementation of these routines is in: |
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| 29 | // compiler-rt/lib/builtins/aarch64/sme-abi.S. These stubs allow the current |
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| 30 | // ArmSME tests to run without depending on compiler-rt. This works as we don't |
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| 31 | // rely on nested ZA-enabled calls at the moment. The use of these stubs can be |
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| 32 | // overridden by setting the ARM_SME_ABI_ROUTINES_SHLIB CMake cache variable to |
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| 33 | // a path to an alternate implementation. |
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| 34 | |
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| 35 | extern "C" { |
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| 36 | |
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| 37 | bool MLIR_ARMSMEABISTUBS_EXPORTED __aarch64_sme_accessible() { |
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| 38 | // The ArmSME tests are run within an emulator so we assume SME is available. |
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| 39 | return true; |
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| 40 | } |
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| 41 | |
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| 42 | struct sme_state { |
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| 43 | int64_t x0; |
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| 44 | int64_t x1; |
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| 45 | }; |
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| 46 | |
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| 47 | sme_state MLIR_ARMSMEABISTUBS_EXPORTED __arm_sme_state() { |
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| 48 | std::cerr << "[warning] __arm_sme_state() stubbed!\n" ; |
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| 49 | return sme_state{}; |
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| 50 | } |
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| 51 | |
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| 52 | void MLIR_ARMSMEABISTUBS_EXPORTED __arm_tpidr2_restore() { |
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| 53 | std::cerr << "[warning] __arm_tpidr2_restore() stubbed!\n" ; |
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| 54 | } |
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| 55 | |
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| 56 | void MLIR_ARMSMEABISTUBS_EXPORTED __arm_tpidr2_save() { |
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| 57 | std::cerr << "[warning] __arm_tpidr2_save() stubbed!\n" ; |
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| 58 | } |
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| 59 | |
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| 60 | void MLIR_ARMSMEABISTUBS_EXPORTED __arm_za_disable() { |
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| 61 | std::cerr << "[warning] __arm_za_disable() stubbed!\n" ; |
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| 62 | } |
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| 63 | } |
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| 64 | |
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