9b7fa2880f
- reorganize exception vectors placement; - small cleanups (drop unused functions/headers/defconfig entries, spelling fixes). -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEK2eFS5jlMn3N6xfYUfnMkfg/oEQFAl48XNkTHGpjbXZia2Jj QGdtYWlsLmNvbQAKCRBR+cyR+D+gREb7D/kBxtOyNtf6Y2hw5OVHiAP/S5lUBN6f I+kRwBWoWF8YbRqCQTg8o7FyuUVW9M7x+eZmqRk7R5ea7e1dnVCWLjZThpdIITBm 520s04vElfCdcxwSRQtEHWFcppUqzix0b3hdNBgzwirV1HlwFy1ymjaj7muLppFw 7iL5JpOLVHz8Oc1JPwgjXsNJiFQ5tucC6mj+KZTcdjps3sDs9wnnTy0GwkY+oHhy RZsjT+ETK5BquhqpDGm1/02bqgYudGjOYIhalzuxToxGQSk2ejk9UQJK/VzYiG0t PB/xYJJiR2k/TP0w99E1Y3SwV3g+60T6EQ3524RS3xqcZcj1E/GGUHjLt5Ktevti rZdYuWeDsALvFxcAuRerB/vNC7R60I6h+GctnkXfXvdQ4d1Wzw9tCNbsbEDUTvI1 I9O6wmavukzDFq8QXv47iWYgsMwEgJUwLt6em8PIP3ek+hOMCPg42BSy8spfLhfT 2q23BrrrC0CseG8MtikNl6mNChWfDvhHB5mTaQ2eNvHx7JVzrrBLkN2Rap7aUpb5 Sl6A+GWizIJyylruhTTnUShkd+4b7SwWP4dTH0KxvxDB5Z1au7yP4bhpHrRzQ5EY iCOYOVW7hLziZbtejF2UvtMuw+KTBgftmLlERlpbh3jKqA5eKyuErpfzBL1p7VeN nCE6DXCvC72euA== =GGAT -----END PGP SIGNATURE----- Merge tag 'xtensa-20200206' of git://github.com/jcmvbkbc/linux-xtensa Pull xtensa updates from Max Filippov: - reorganize exception vectors placement - small cleanups (drop unused functions/headers/defconfig entries, spelling fixes) * tag 'xtensa-20200206' of git://github.com/jcmvbkbc/linux-xtensa: xtensa: ISS: improve simcall assembly xtensa: reorganize vectors placement xtensa: separate SMP and XIP support xtensa: move fast exception handlers close to vectors arch/xtensa: fix Kconfig typos for HAVE_SMP xtensa: clean up optional XCHAL_* definitions xtensa: drop unused function fast_coprocessor_double xtensa: drop empty platform_* functions from platforms xtensa: clean up platform headers xtensa: drop set_except_vector declaration xtensa: configs: Cleanup old Kconfig IO scheduler options
141 lines
3.4 KiB
C
141 lines
3.4 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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* Copyright (C) 2017 Cadence Design Systems 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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#define SYS_iss_argc 1000 /* returns value of argc */
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#define SYS_iss_argv_size 1001 /* bytes needed for argv & arg strings */
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#define SYS_iss_set_argv 1002 /* saves argv & arg strings at given addr */
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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)
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{
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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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__asm__ __volatile__ (
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"simcall\n"
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: "+r"(a1), "+r"(b1)
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: "r"(c1), "r"(d1)
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: "memory");
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errno = b1;
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return a1;
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}
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static inline int simc_exit(int exit_code)
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{
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return __simc(SYS_exit, exit_code, 0, 0);
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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);
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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);
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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);
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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);
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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);
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}
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static inline int simc_poll(int fd)
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{
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long timeval[2] = { 0, 0 };
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return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&timeval);
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}
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static inline int simc_lseek(int fd, uint32_t off, int whence)
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{
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return __simc(SYS_lseek, fd, off, whence);
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}
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static inline int simc_argc(void)
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{
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return __simc(SYS_iss_argc, 0, 0, 0);
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}
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static inline int simc_argv_size(void)
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{
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return __simc(SYS_iss_argv_size, 0, 0, 0);
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}
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static inline void simc_argv(void *buf)
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{
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__simc(SYS_iss_set_argv, (int)buf, 0, 0);
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}
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#endif /* _XTENSA_PLATFORM_ISS_SIMCALL_H */
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