| /* 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 */ |