6a8eb99e13
Add GDBIO implementation for the xtensa semihosting interface. It offers less functions than the simcall interface, so make some semihosting functions optional and return error when implementation is not available. Add Kconfig menu to select semihosting implementation and add simcall and GDBIO choices there. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
111 lines
2.3 KiB
C
111 lines
2.3 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 - 2021 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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#include <linux/bug.h>
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#ifdef CONFIG_XTENSA_SIMCALL_ISS
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#include <platform/simcall-iss.h>
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#endif
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#ifdef CONFIG_XTENSA_SIMCALL_GDBIO
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#include <platform/simcall-gdbio.h>
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#endif
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static inline int simc_exit(int exit_code)
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{
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#ifdef SYS_exit
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return __simc(SYS_exit, exit_code, 0, 0);
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#else
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WARN_ONCE(1, "%s: not implemented\n", __func__);
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return -1;
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#endif
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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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#ifdef SYS_ioctl
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return __simc(SYS_ioctl, fd, request, (int) arg);
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#else
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WARN_ONCE(1, "%s: not implemented\n", __func__);
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return -1;
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#endif
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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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#ifdef SYS_select_one
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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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#else
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WARN_ONCE(1, "%s: not implemented\n", __func__);
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return -1;
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#endif
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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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#ifdef SYS_iss_argc
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return __simc(SYS_iss_argc, 0, 0, 0);
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#else
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WARN_ONCE(1, "%s: not implemented\n", __func__);
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return 0;
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#endif
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}
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static inline int simc_argv_size(void)
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{
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#ifdef SYS_iss_argv_size
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return __simc(SYS_iss_argv_size, 0, 0, 0);
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#else
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WARN_ONCE(1, "%s: not implemented\n", __func__);
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return 0;
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#endif
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}
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static inline void simc_argv(void *buf)
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{
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#ifdef SYS_iss_set_argv
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__simc(SYS_iss_set_argv, (int)buf, 0, 0);
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#else
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WARN_ONCE(1, "%s: not implemented\n", __func__);
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#endif
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}
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#endif /* _XTENSA_PLATFORM_ISS_SIMCALL_H */
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