mirror of https://gitee.com/openkylin/linux.git
116 lines
2.9 KiB
C
116 lines
2.9 KiB
C
/*
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* include/asm-xtensa/platform-iss/simcall.h
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2001 Tensilica Inc.
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*/
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#ifndef _XTENSA_PLATFORM_ISS_SIMCALL_H
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#define _XTENSA_PLATFORM_ISS_SIMCALL_H
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/*
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* System call like services offered by the simulator host.
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*/
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#define SYS_nop 0 /* unused */
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#define SYS_exit 1 /*x*/
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#define SYS_fork 2
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#define SYS_read 3 /*x*/
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#define SYS_write 4 /*x*/
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#define SYS_open 5 /*x*/
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#define SYS_close 6 /*x*/
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#define SYS_rename 7 /*x 38 - waitpid */
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#define SYS_creat 8 /*x*/
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#define SYS_link 9 /*x (not implemented on WIN32) */
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#define SYS_unlink 10 /*x*/
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#define SYS_execv 11 /* n/a - execve */
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#define SYS_execve 12 /* 11 - chdir */
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#define SYS_pipe 13 /* 42 - time */
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#define SYS_stat 14 /* 106 - mknod */
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#define SYS_chmod 15
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#define SYS_chown 16 /* 202 - lchown */
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#define SYS_utime 17 /* 30 - break */
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#define SYS_wait 18 /* n/a - oldstat */
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#define SYS_lseek 19 /*x*/
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#define SYS_getpid 20
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#define SYS_isatty 21 /* n/a - mount */
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#define SYS_fstat 22 /* 108 - oldumount */
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#define SYS_time 23 /* 13 - setuid */
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#define SYS_gettimeofday 24 /*x 78 - getuid (not implemented on WIN32) */
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#define SYS_times 25 /*X 43 - stime (Xtensa-specific implementation) */
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#define SYS_socket 26
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#define SYS_sendto 27
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#define SYS_recvfrom 28
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#define SYS_select_one 29 /* not compitible select, one file descriptor at the time */
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#define SYS_bind 30
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#define SYS_ioctl 31
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/*
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* SYS_select_one specifiers
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*/
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#define XTISS_SELECT_ONE_READ 1
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#define XTISS_SELECT_ONE_WRITE 2
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#define XTISS_SELECT_ONE_EXCEPT 3
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static int errno;
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static inline int __simc(int a, int b, int c, int d, int e, int f)
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{
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int ret;
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register int a1 asm("a2") = a;
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register int b1 asm("a3") = b;
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register int c1 asm("a4") = c;
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register int d1 asm("a5") = d;
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register int e1 asm("a6") = e;
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register int f1 asm("a7") = f;
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__asm__ __volatile__ (
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"simcall\n"
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"mov %0, a2\n"
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"mov %1, a3\n"
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: "=a" (ret), "=a" (errno), "+r"(a1), "+r"(b1)
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: "r"(c1), "r"(d1), "r"(e1), "r"(f1)
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: "memory");
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return ret;
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}
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static inline int simc_open(const char *file, int flags, int mode)
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{
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return __simc(SYS_open, (int) file, flags, mode, 0, 0);
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}
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static inline int simc_close(int fd)
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{
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return __simc(SYS_close, fd, 0, 0, 0, 0);
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}
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static inline int simc_ioctl(int fd, int request, void *arg)
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{
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return __simc(SYS_ioctl, fd, request, (int) arg, 0, 0);
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}
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static inline int simc_read(int fd, void *buf, size_t count)
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{
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return __simc(SYS_read, fd, (int) buf, count, 0, 0);
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}
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static inline int simc_write(int fd, const void *buf, size_t count)
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{
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return __simc(SYS_write, fd, (int) buf, count, 0, 0);
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}
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static inline int simc_poll(int fd)
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{
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struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
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return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&tv,
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0, 0);
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}
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#endif /* _XTENSA_PLATFORM_ISS_SIMCALL_H */
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