23 lines
465 B
C
23 lines
465 B
C
/*
|
|
* 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;
|
|
}
|