| /* | |
| * Semihosting Tests - ARM Helper | |
| * | |
| * Copyright (c) 2019 | |
| * Written by Alex Bennée <alex.bennee@linaro.org> | |
| * | |
| * SPDX-License-Identifier: GPL-3.0-or-later | |
| */ | |
| uintptr_t __semi_call(uintptr_t type, uintptr_t arg0) | |
| { | |
| register uintptr_t t asm("r0") = type; | |
| register uintptr_t a0 asm("r1") = arg0; | |
| #ifdef __thumb__ | |
| # define SVC "svc 0xab" | |
| #else | |
| # define SVC "svc 0x123456" | |
| #endif | |
| asm(SVC : "=r" (t) | |
| : "r" (t), "r" (a0)); | |
| return t; | |
| } |