35 lines
738 B
C
35 lines
738 B
C
|
/* 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 */
|