1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) 2021 Cadence Design Systems Inc. */
3
4 #ifndef _XTENSA_PLATFORM_ISS_SIMCALL_ISS_H
5 #define _XTENSA_PLATFORM_ISS_SIMCALL_ISS_H
6
7 /*
8 * System call like services offered by the simulator host.
9 */
10
11 #define SYS_nop 0 /* unused */
12 #define SYS_exit 1 /*x*/
13 #define SYS_fork 2
14 #define SYS_read 3 /*x*/
15 #define SYS_write 4 /*x*/
16 #define SYS_open 5 /*x*/
17 #define SYS_close 6 /*x*/
18 #define SYS_rename 7 /*x 38 - waitpid */
19 #define SYS_creat 8 /*x*/
20 #define SYS_link 9 /*x (not implemented on WIN32) */
21 #define SYS_unlink 10 /*x*/
22 #define SYS_execv 11 /* n/a - execve */
23 #define SYS_execve 12 /* 11 - chdir */
24 #define SYS_pipe 13 /* 42 - time */
25 #define SYS_stat 14 /* 106 - mknod */
26 #define SYS_chmod 15
27 #define SYS_chown 16 /* 202 - lchown */
28 #define SYS_utime 17 /* 30 - break */
29 #define SYS_wait 18 /* n/a - oldstat */
30 #define SYS_lseek 19 /*x*/
31 #define SYS_getpid 20
32 #define SYS_isatty 21 /* n/a - mount */
33 #define SYS_fstat 22 /* 108 - oldumount */
34 #define SYS_time 23 /* 13 - setuid */
35 #define SYS_gettimeofday 24 /*x 78 - getuid (not implemented on WIN32) */
36 #define SYS_times 25 /*X 43 - stime (Xtensa-specific implementation) */
37 #define SYS_socket 26
38 #define SYS_sendto 27
39 #define SYS_recvfrom 28
40 #define SYS_select_one 29 /* not compatible select, one file descriptor at the time */
41 #define SYS_bind 30
42 #define SYS_ioctl 31
43
44 #define SYS_iss_argc 1000 /* returns value of argc */
45 #define SYS_iss_argv_size 1001 /* bytes needed for argv & arg strings */
46 #define SYS_iss_set_argv 1002 /* saves argv & arg strings at given addr */
47
48 /*
49 * SYS_select_one specifiers
50 */
51
52 #define XTISS_SELECT_ONE_READ 1
53 #define XTISS_SELECT_ONE_WRITE 2
54 #define XTISS_SELECT_ONE_EXCEPT 3
55
56 static int errno;
57
58 static inline int __simc(int a, int b, int c, int d)
59 {
60 register int a1 asm("a2") = a;
61 register int b1 asm("a3") = b;
62 register int c1 asm("a4") = c;
63 register int d1 asm("a5") = d;
64 __asm__ __volatile__ (
65 "simcall\n"
66 : "+r"(a1), "+r"(b1)
67 : "r"(c1), "r"(d1)
68 : "memory");
69 errno = b1;
70 return a1;
71 }
72
73 #endif /* _XTENSA_PLATFORM_ISS_SIMCALL_ISS_H */
74
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