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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2021 Cadence Design Systems Inc. */
#ifndef _XTENSA_PLATFORM_ISS_SIMCALL_ISS_H
#define _XTENSA_PLATFORM_ISS_SIMCALL_ISS_H
/*
* System call like services offered by the simulator host.
*/
#define SYS_nop 0 /* unused */
#define SYS_exit 1 /*x*/
#define SYS_fork 2
#define SYS_read 3 /*x*/
#define SYS_write 4 /*x*/
#define SYS_open 5 /*x*/
#define SYS_close 6 /*x*/
#define SYS_rename 7 /*x 38 - waitpid */
#define SYS_creat 8 /*x*/
#define SYS_link 9 /*x (not implemented on WIN32) */
#define SYS_unlink 10 /*x*/
#define SYS_execv 11 /* n/a - execve */
#define SYS_execve 12 /* 11 - chdir */
#define SYS_pipe 13 /* 42 - time */
#define SYS_stat 14 /* 106 - mknod */
#define SYS_chmod 15
#define SYS_chown 16 /* 202 - lchown */
#define SYS_utime 17 /* 30 - break */
#define SYS_wait 18 /* n/a - oldstat */
#define SYS_lseek 19 /*x*/
#define SYS_getpid 20
#define SYS_isatty 21 /* n/a - mount */
#define SYS_fstat 22 /* 108 - oldumount */
#define SYS_time 23 /* 13 - setuid */
#define SYS_gettimeofday 24 /*x 78 - getuid (not implemented on WIN32) */
#define SYS_times 25 /*X 43 - stime (Xtensa-specific implementation) */
#define SYS_socket 26
#define SYS_sendto 27
#define SYS_recvfrom 28
#define SYS_select_one 29 /* not compatible select, one file descriptor at the time */
#define SYS_bind 30
#define SYS_ioctl 31
#define SYS_iss_argc 1000 /* returns value of argc */
#define SYS_iss_argv_size 1001 /* bytes needed for argv & arg strings */
#define SYS_iss_set_argv 1002 /* saves argv & arg strings at given addr */
/*
* SYS_select_one specifiers
*/
#define XTISS_SELECT_ONE_READ 1
#define XTISS_SELECT_ONE_WRITE 2
#define XTISS_SELECT_ONE_EXCEPT 3
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("a3") = b;
register int c1 asm("a4") = c;
register int d1 asm("a5") = d;
__asm__ __volatile__ (
"simcall\n"
: "+r"(a1), "+r"(b1)
: "r"(c1), "r"(d1)
: "memory");
errno = b1;
return a1;
}
#endif /* _XTENSA_PLATFORM_ISS_SIMCALL_ISS_H */