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/*
* include/asm-xtensa/platform-iss/simcall.h
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2001 Tensilica Inc.
*/
#ifndef _XTENSA_PLATFORM_ISS_SIMCALL_H
#define _XTENSA_PLATFORM_ISS_SIMCALL_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 compitible select, one file descriptor at the time */
#define SYS_bind 30
#define SYS_ioctl 31
/*
* 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)
{
int ret;
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"
"mov %0, a2\n"
"mov %1, a3\n"
: "=a" (ret), "=a" (errno), "+r"(a1), "+r"(b1)
: "r"(c1), "r"(d1)
: "memory");
return ret;
}
static inline int simc_open(const char *file, int flags, int mode)
{
return __simc(SYS_open, (int) file, flags, mode);
}
static inline int simc_close(int fd)
{
return __simc(SYS_close, fd, 0, 0);
}
static inline int simc_ioctl(int fd, int request, void *arg)
{
return __simc(SYS_ioctl, fd, request, (int) arg);
}
static inline int simc_read(int fd, void *buf, size_t count)
{
return __simc(SYS_read, fd, (int) buf, count);
}
static inline int simc_write(int fd, const void *buf, size_t count)
{
return __simc(SYS_write, fd, (int) buf, count);
}
static inline int simc_poll(int fd)
{
struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&tv);
}
static inline int simc_lseek(int fd, uint32_t off, int whence)
{
return __simc(SYS_lseek, fd, off, whence);
}
#endif /* _XTENSA_PLATFORM_ISS_SIMCALL_H */