tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef SIMCALL_INCLUDED
2#define SIMCALL_INCLUDED
3
4/*
5 * THIS FILE IS GENERATED -- DO NOT MODIFY BY HAND
6 *
7 * include/asm-xtensa/xtensa/simcall.h - Simulator call numbers
8 *
9 * This file is subject to the terms and conditions of the GNU General
10 * Public License. See the file "COPYING" in the main directory of
11 * this archive for more details.
12 *
13 * Copyright (C) 2002 Tensilica Inc.
14 */
15
16
17/*
18 * System call like services offered by the simulator host.
19 * These are modeled after the Linux 2.4 kernel system calls
20 * for Xtensa processors. However not all system calls and
21 * not all functionality of a given system call are implemented,
22 * or necessarily have well defined or equivalent semantics in
23 * the context of a simulation (as opposed to a Unix kernel).
24 *
25 * These services behave largely as if they had been invoked
26 * as a task in the simulator host's operating system
27 * (eg. files accessed are those of the simulator host).
28 * However, these SIMCALLs model a virtual operating system
29 * so that various definitions, bit assignments etc
30 * (eg. open mode bits, errno values, etc) are independent
31 * of the host operating system used to run the simulation.
32 * Rather these definitions are specific to the Xtensa ISS.
33 * This way Xtensa ISA code written to use these SIMCALLs
34 * can (in principle) be simulated on any host.
35 *
36 * Up to 6 parameters are passed in registers a3 to a8
37 * (note the 6th parameter isn't passed on the stack,
38 * unlike windowed function calling conventions).
39 * The return value is in a2. A negative value in the
40 * range -4096 to -1 indicates a negated error code to be
41 * reported in errno with a return value of -1, otherwise
42 * the value in a2 is returned as is.
43 */
44
45/* These #defines need to match what's in Xtensa/OS/vxworks/xtiss/simcalls.c */
46
47#define SYS_nop 0 /* n/a - setup; used to flush register windows */
48#define SYS_exit 1 /*x*/
49#define SYS_fork 2
50#define SYS_read 3 /*x*/
51#define SYS_write 4 /*x*/
52#define SYS_open 5 /*x*/
53#define SYS_close 6 /*x*/
54#define SYS_rename 7 /*x 38 - waitpid */
55#define SYS_creat 8 /*x*/
56#define SYS_link 9 /*x (not implemented on WIN32) */
57#define SYS_unlink 10 /*x*/
58#define SYS_execv 11 /* n/a - execve */
59#define SYS_execve 12 /* 11 - chdir */
60#define SYS_pipe 13 /* 42 - time */
61#define SYS_stat 14 /* 106 - mknod */
62#define SYS_chmod 15
63#define SYS_chown 16 /* 202 - lchown */
64#define SYS_utime 17 /* 30 - break */
65#define SYS_wait 18 /* n/a - oldstat */
66#define SYS_lseek 19 /*x*/
67#define SYS_getpid 20
68#define SYS_isatty 21 /* n/a - mount */
69#define SYS_fstat 22 /* 108 - oldumount */
70#define SYS_time 23 /* 13 - setuid */
71#define SYS_gettimeofday 24 /*x 78 - getuid (not implemented on WIN32) */
72#define SYS_times 25 /*X 43 - stime (Xtensa-specific implementation) */
73#define SYS_socket 26
74#define SYS_sendto 27
75#define SYS_recvfrom 28
76#define SYS_select_one 29 /* not compitible select, one file descriptor at the time */
77#define SYS_bind 30
78#define SYS_ioctl 31
79
80/*
81 * Other...
82 */
83#define SYS_iss_argc 1000 /* returns value of argc */
84#define SYS_iss_argv_size 1001 /* bytes needed for argv & arg strings */
85#define SYS_iss_set_argv 1002 /* saves argv & arg strings at given addr */
86
87/*
88 * SIMCALLs for the ferret memory debugger. All are invoked by
89 * libferret.a ... ( Xtensa/Target-Libs/ferret )
90 */
91#define SYS_ferret 1010
92#define SYS_malloc 1011
93#define SYS_free 1012
94#define SYS_more_heap 1013
95#define SYS_no_heap 1014
96
97
98/*
99 * Extra SIMCALLs for GDB:
100 */
101#define SYS_gdb_break -1 /* invoked by XTOS on user exceptions if EPC points
102 to a break.n/break, regardless of cause! */
103#define SYS_xmon_out -2 /* invoked by XMON: ... */
104#define SYS_xmon_in -3 /* invoked by XMON: ... */
105#define SYS_xmon_flush -4 /* invoked by XMON: ... */
106#define SYS_gdb_abort -5 /* invoked by XTOS in _xtos_panic() */
107#define SYS_gdb_illegal_inst -6 /* invoked by XTOS for illegal instructions (too deeply) */
108#define SYS_xmon_init -7 /* invoked by XMON: ... */
109#define SYS_gdb_enter_sktloop -8 /* invoked by XTOS on debug exceptions */
110
111/*
112 * SIMCALLs for vxWorks xtiss BSP:
113 */
114#define SYS_setup_ppp_pipes -83
115#define SYS_log_msg -84
116
117/*
118 * Test SIMCALLs:
119 */
120#define SYS_test_write_state -100
121#define SYS_test_read_state -101
122
123/*
124 * SYS_select_one specifiers
125 */
126#define XTISS_SELECT_ONE_READ 1
127#define XTISS_SELECT_ONE_WRITE 2
128#define XTISS_SELECT_ONE_EXCEPT 3
129
130#endif /* !SIMCALL_INCLUDED */