arch/xtensa/platforms/iss/include/platform/simcall.h

Source file repositories/reference/linux-study-clean/arch/xtensa/platforms/iss/include/platform/simcall.h

File Facts

System
Linux kernel
Corpus path
arch/xtensa/platforms/iss/include/platform/simcall.h
Extension
.h
Size
2343 bytes
Lines
111
Domain
Architecture Layer
Bucket
arch/xtensa
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _XTENSA_PLATFORM_ISS_SIMCALL_H
#define _XTENSA_PLATFORM_ISS_SIMCALL_H

#include <linux/bug.h>

#ifdef CONFIG_XTENSA_SIMCALL_ISS
#include <platform/simcall-iss.h>
#endif
#ifdef CONFIG_XTENSA_SIMCALL_GDBIO
#include <platform/simcall-gdbio.h>
#endif

static inline int simc_exit(int exit_code)
{
#ifdef SYS_exit
	return __simc(SYS_exit, exit_code, 0, 0);
#else
	WARN_ONCE(1, "%s: not implemented\n", __func__);
	return -1;
#endif
}

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)
{
#ifdef SYS_ioctl
	return __simc(SYS_ioctl, fd, request, (int) arg);
#else
	WARN_ONCE(1, "%s: not implemented\n", __func__);
	return -1;
#endif
}

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)
{
#ifdef SYS_select_one
	long timeval[2] = { 0, 0 };

	return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&timeval);
#else
	WARN_ONCE(1, "%s: not implemented\n", __func__);
	return -1;
#endif
}

static inline int simc_lseek(int fd, uint32_t off, int whence)
{
	return __simc(SYS_lseek, fd, off, whence);
}

static inline int simc_argc(void)
{
#ifdef SYS_iss_argc
	return __simc(SYS_iss_argc, 0, 0, 0);
#else
	WARN_ONCE(1, "%s: not implemented\n", __func__);
	return 0;
#endif
}

static inline int simc_argv_size(void)
{
#ifdef SYS_iss_argv_size
	return __simc(SYS_iss_argv_size, 0, 0, 0);
#else
	WARN_ONCE(1, "%s: not implemented\n", __func__);
	return 0;
#endif
}

static inline void simc_argv(void *buf)

Annotation

Implementation Notes