/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2021 Cadence Design Systems Inc. */ #ifndef _XTENSA_PLATFORM_ISS_SIMCALL_GDBIO_H #define _XTENSA_PLATFORM_ISS_SIMCALL_GDBIO_H /* * System call like services offered by the GDBIO host. */ #define SYS_open -2 #define SYS_close -3 #define SYS_read -4 #define SYS_write -5 #define SYS_lseek -6 static int errno; static inline int __simc(int a, int b, int c, int d) { register int a1 asm("a2") = a; register int b1 asm("a6") = b; register int c1 asm("a3") = c; register int d1 asm("a4") = d; __asm__ __volatile__ ( "break 1, 14\n" : "+r"(a1), "+r"(c1) : "r"(b1), "r"(d1) : "memory"); errno = c1; return a1; } #endif /* _XTENSA_PLATFORM_ISS_SIMCALL_GDBIO_H */