23 lines
524 B
C
23 lines
524 B
C
/*
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* Semihosting Tests - RiscV64 Helper
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*
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* Copyright (c) 2021
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* Written by Alex Bennée <alex.bennee@linaro.org>
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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uintptr_t __semi_call(uintptr_t type, uintptr_t arg0)
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{
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register uintptr_t t asm("a0") = type;
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register uintptr_t a0 asm("a1") = arg0;
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asm(".option norvc\n\t"
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".balign 16\n\t"
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"slli zero, zero, 0x1f\n\t"
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"ebreak\n\t"
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"srai zero, zero, 0x7\n\t"
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: "=r" (t)
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: "r" (t), "r" (a0));
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return t;
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}
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