| /* |
| * Semihosting Tests |
| * |
| * Copyright (c) 2019 |
| * Written by Alex Bennée <alex.bennee@linaro.org> |
| * |
| * SPDX-License-Identifier: GPL-3.0-or-later |
| */ |
| |
| #define SYS_WRITE0 0x04 |
| #define SYS_READC 0x07 |
| #define SYS_REPORTEXC 0x18 |
| |
| uintptr_t __semi_call(uintptr_t type, uintptr_t arg0) |
| { |
| #if defined(__arm__) |
| 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)); |
| #else |
| register uintptr_t t asm("x0") = type; |
| register uintptr_t a0 asm("x1") = arg0; |
| asm("hlt 0xf000" |
| : "=r" (t) |
| : "r" (t), "r" (a0)); |
| #endif |
| |
| return t; |
| } |
