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Diffstat (limited to 'cpu/cpu-sysdeps.h')
| -rw-r--r-- | cpu/cpu-sysdeps.h | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/cpu/cpu-sysdeps.h b/cpu/cpu-sysdeps.h new file mode 100644 index 0000000..81bb926 --- /dev/null +++ b/cpu/cpu-sysdeps.h @@ -0,0 +1,288 @@ +/*************************************************************** + __CPU_SYSDEPS.H + + This file contains HOST-dependent system call wrapper + declarations and internal MCPU syscall ABI constants. + + PART OF : CPU - library . + + USAGE : Internal only . + + NOTE : Include "libmcpu.h" before this FILE . + + Copyright (C) 2026 by Andrew V.Kosteltsev. + All Rights Reserved. + ***************************************************************/ + +#ifndef __CPU_SYSDEPS_H +#define __CPU_SYSDEPS_H + +#include <cpu-errno.h> + +#ifdef __cplusplus +extern "C" { +#endif + + +/* MCPU open(2) ABI. These values are HOST-independent. */ +#define __CPU_O_ACCMODE 00000003U +#define __CPU_O_RDONLY 00000000U +#define __CPU_O_WRONLY 00000001U +#define __CPU_O_RDWR 00000002U +#define __CPU_O_CREAT 00000100U +#define __CPU_O_EXCL 00000200U +#define __CPU_O_NOCTTY 00000400U +#define __CPU_O_TRUNC 00001000U +#define __CPU_O_APPEND 00002000U +#define __CPU_O_NONBLOCK 00004000U + +#define __CPU_O_SUPPORTED ( __CPU_O_ACCMODE | __CPU_O_CREAT | __CPU_O_EXCL | \ + __CPU_O_NOCTTY | __CPU_O_TRUNC | __CPU_O_APPEND | \ + __CPU_O_NONBLOCK ) + +/* MCPU fcntl(2) ABI. Commands and descriptor flags are guest values. */ +#define __CPU_F_DUPFD 0U +#define __CPU_F_GETFD 1U +#define __CPU_F_SETFD 2U +#define __CPU_F_GETFL 3U +#define __CPU_F_SETFL 4U + +#define __CPU_FD_CLOEXEC 1U +#define __CPU_FD_SUPPORTED __CPU_FD_CLOEXEC + +/* F_SETFL accepts access-mode bits for the conventional GETFL/SETFL cycle, + but only APPEND and NONBLOCK are mutable file-status flags. */ +#define __CPU_F_SETFL_SUPPORTED \ + ( __CPU_O_ACCMODE | __CPU_O_APPEND | __CPU_O_NONBLOCK ) + +/* MCPU pipe2(2) ABI. O_CLOEXEC is guest descriptor state; only + O_NONBLOCK is translated to a HOST file-status flag. */ +#define __CPU_O_CLOEXEC 02000000U +#define __CPU_PIPE2_SUPPORTED ( __CPU_O_NONBLOCK | __CPU_O_CLOEXEC ) +#define __CPU_PIPEFD_SIZE 16U +#define __CPU_PIPEFD_READ 0U +#define __CPU_PIPEFD_WRITE 8U + +/* MCPU mode bits used by open(2) when O_CREAT is present. */ +#define __CPU_S_ISUID 00004000U +#define __CPU_S_ISGID 00002000U +#define __CPU_S_ISVTX 00001000U +#define __CPU_S_IRUSR 00000400U +#define __CPU_S_IWUSR 00000200U +#define __CPU_S_IXUSR 00000100U +#define __CPU_S_IRGRP 00000040U +#define __CPU_S_IWGRP 00000020U +#define __CPU_S_IXGRP 00000010U +#define __CPU_S_IROTH 00000004U +#define __CPU_S_IWOTH 00000002U +#define __CPU_S_IXOTH 00000001U +#define __CPU_S_SUPPORTED 00007777U + +/* MCPU chown(2) ABI. UINT64_MAX means "leave this ID unchanged". */ +#define __CPU_ID_NO_CHANGE ((__mpu_uint64_t)-1) + +#define __CPU_SEEK_SET 0U +#define __CPU_SEEK_CUR 1U +#define __CPU_SEEK_END 2U + +/* MCPU access(2) ABI. These values are HOST-independent. */ +#define __CPU_F_OK 0U +#define __CPU_X_OK 1U +#define __CPU_W_OK 2U +#define __CPU_R_OK 4U +#define __CPU_ACCESS_SUPPORTED (__CPU_X_OK | __CPU_W_OK | __CPU_R_OK) + +/* MCPU time ABI. All time values use signed 64-bit seconds and a separate + signed 64-bit fractional field. Clock IDs are HOST-independent. */ +#define __CPU_CLOCK_REALTIME 0U +#define __CPU_CLOCK_MONOTONIC 1U +#define __CPU_TIMER_ABSTIME 1U + +#define __CPU_TIMEVAL_SIZE 16U +#define __CPU_TIMEVAL_TV_SEC 0U +#define __CPU_TIMEVAL_TV_USEC 8U + +#define __CPU_TIMESPEC_SIZE 16U +#define __CPU_TIMESPEC_TV_SEC 0U +#define __CPU_TIMESPEC_TV_NSEC 8U + +struct __cpu_timeval +{ + __mpu_int64_t tv_sec; + __mpu_int64_t tv_usec; +}; + +struct __cpu_timespec +{ + __mpu_int64_t tv_sec; + __mpu_int64_t tv_nsec; +}; + +/* MCPU select(2) ABI. Descriptor sets contain four target-order u64 + words, for a total of 256 guest descriptor bits. The timeout is input-only. */ +#define __CPU_FD_SETSIZE 256U +#define __CPU_FD_SET_WORDS 4U +#define __CPU_FD_SET_SIZE 32U + +#define __CPU_SELECT_READ 0x01U +#define __CPU_SELECT_WRITE 0x02U +#define __CPU_SELECT_EXCEPT 0x04U + +struct __cpu_select_entry +{ + unsigned int guest_fd; + int host_fd; + unsigned int events; + unsigned int revents; +}; + +/* MCPU stat(2) ABI. The structure is always exactly 128 bytes. */ +#define __CPU_STAT_SIZE 128U +#define __CPU_STAT_ST_DEV 0U +#define __CPU_STAT_ST_INO 8U +#define __CPU_STAT_ST_MODE 16U +#define __CPU_STAT_ST_NLINK 24U +#define __CPU_STAT_ST_UID 32U +#define __CPU_STAT_ST_GID 40U +#define __CPU_STAT_ST_RDEV 48U +#define __CPU_STAT_ST_SIZE 56U +#define __CPU_STAT_ST_BLKSIZE 64U +#define __CPU_STAT_ST_BLOCKS 72U +#define __CPU_STAT_ST_ATIME_SEC 80U +#define __CPU_STAT_ST_ATIME_NSEC 88U +#define __CPU_STAT_ST_MTIME_SEC 96U +#define __CPU_STAT_ST_MTIME_NSEC 104U +#define __CPU_STAT_ST_CTIME_SEC 112U +#define __CPU_STAT_ST_CTIME_NSEC 120U + +#define __CPU_S_IFMT 000170000U +#define __CPU_S_IFIFO 000010000U +#define __CPU_S_IFCHR 000020000U +#define __CPU_S_IFDIR 000040000U +#define __CPU_S_IFBLK 000060000U +#define __CPU_S_IFREG 000100000U +#define __CPU_S_IFLNK 000120000U +#define __CPU_S_IFSOCK 000140000U + +/* MCPU getdents(2) ABI. Records are fixed at 288 bytes. */ +#define __CPU_DIRENT_SIZE 288U +#define __CPU_DIRENT_D_INO 0U +#define __CPU_DIRENT_D_OFF 8U +#define __CPU_DIRENT_D_RECLEN 16U +#define __CPU_DIRENT_D_TYPE 24U +#define __CPU_DIRENT_D_NAME 32U +#define __CPU_DIRENT_NAME_SIZE 256U + +#define __CPU_DT_UNKNOWN 0U +#define __CPU_DT_FIFO 1U +#define __CPU_DT_CHR 2U +#define __CPU_DT_DIR 4U +#define __CPU_DT_BLK 6U +#define __CPU_DT_REG 8U +#define __CPU_DT_LNK 10U +#define __CPU_DT_SOCK 12U + +struct __cpu_dirent +{ + __mpu_uint64_t d_ino; + __mpu_int64_t d_off; + __mpu_uint64_t d_reclen; + __mpu_uint64_t d_type; + unsigned char d_name[__CPU_DIRENT_NAME_SIZE]; +}; + +struct __cpu_stat +{ + __mpu_uint64_t st_dev; + __mpu_uint64_t st_ino; + __mpu_uint64_t st_mode; + __mpu_uint64_t st_nlink; + __mpu_uint64_t st_uid; + __mpu_uint64_t st_gid; + __mpu_uint64_t st_rdev; + __mpu_int64_t st_size; + __mpu_int64_t st_blksize; + __mpu_int64_t st_blocks; + __mpu_int64_t st_atime_sec; + __mpu_uint64_t st_atime_nsec; + __mpu_int64_t st_mtime_sec; + __mpu_uint64_t st_mtime_nsec; + __mpu_int64_t st_ctime_sec; + __mpu_uint64_t st_ctime_nsec; +}; + + + +/* Translate a positive HOST errno value into the stable positive MCPU errno + namespace. Zero maps to zero; unknown values map to __MCPU_EUNKNOWN. */ +extern int __cpu_errno_from_host( int errnum ); + +extern __mpu_int64_t __cpu_sys_cwd_init( void ); +extern __mpu_int64_t __cpu_sys_chdir( int dirfd, const char *path ); +extern __mpu_int64_t __cpu_sys_fchdir( int fd ); + +extern __mpu_int64_t __cpu_sys_open ( int dirfd, const char *path, + __mpu_uint64_t flags, + __mpu_uint64_t mode ); +extern __mpu_int64_t __cpu_sys_creat( int dirfd, const char *path, + __mpu_uint64_t mode ); +extern __mpu_int64_t __cpu_sys_close( int fd ); +extern __mpu_int64_t __cpu_sys_dup ( int fd ); +extern __mpu_int64_t __cpu_sys_read ( int fd, void *buf, __mpu_uint64_t count ); +extern __mpu_int64_t __cpu_sys_write( int fd, const void *buf, __mpu_uint64_t count ); +extern __mpu_int64_t __cpu_sys_lseek( int fd, __mpu_int64_t offset, + __mpu_uint64_t whence ); +extern __mpu_int64_t __cpu_sys_link ( int dirfd, const char *oldpath, + const char *newpath ); +extern __mpu_int64_t __cpu_sys_unlink( int dirfd, const char *path ); +extern __mpu_int64_t __cpu_sys_rename( int dirfd, const char *oldpath, + const char *newpath ); +extern __mpu_int64_t __cpu_sys_symlink( int dirfd, const char *target, + const char *linkpath ); +extern __mpu_int64_t __cpu_sys_readlink( int dirfd, const char *path, + void *buf, __mpu_uint64_t count ); +extern __mpu_int64_t __cpu_sys_mkdir ( int dirfd, const char *path, + __mpu_uint64_t mode ); +extern __mpu_int64_t __cpu_sys_chmod ( int dirfd, const char *path, + __mpu_uint64_t mode ); +extern __mpu_int64_t __cpu_sys_chown ( int dirfd, const char *path, + __mpu_uint64_t uid, + __mpu_uint64_t gid ); +extern __mpu_int64_t __cpu_sys_rmdir ( int dirfd, const char *path ); +extern __mpu_int64_t __cpu_sys_access( int dirfd, const char *path, + __mpu_uint64_t mode ); + +extern __mpu_int64_t __cpu_sys_stat ( int dirfd, const char *path, + struct __cpu_stat *st ); +extern __mpu_int64_t __cpu_sys_fstat( int fd, struct __cpu_stat *st ); +extern __mpu_int64_t __cpu_sys_lstat( int dirfd, const char *path, + struct __cpu_stat *st ); +extern __mpu_int64_t __cpu_sys_getdents( int fd, struct __cpu_dirent *dirp, + __mpu_uint64_t count ); +extern __mpu_int64_t __cpu_sys_fsync( int fd ); +extern __mpu_int64_t __cpu_sys_truncate( int dirfd, const char *path, + __mpu_int64_t length ); +extern __mpu_int64_t __cpu_sys_ftruncate( int fd, __mpu_int64_t length ); +extern __mpu_int64_t __cpu_sys_fchmod( int fd, __mpu_uint64_t mode ); +extern __mpu_int64_t __cpu_sys_fchown( int fd, __mpu_uint64_t uid, + __mpu_uint64_t gid ); +extern __mpu_int64_t __cpu_sys_fcntl( int fd, __mpu_uint64_t cmd, + __mpu_uint64_t arg ); +extern __mpu_int64_t __cpu_sys_pipe2( int pipefd[2], __mpu_uint64_t flags ); +extern __mpu_int64_t __cpu_sys_select( struct __cpu_select_entry *entries, + __mpu_uint64_t count, + const struct __cpu_timeval *timeout ); +extern __mpu_int64_t __cpu_sys_clock_gettime( __mpu_uint64_t clockid, + struct __cpu_timespec *tp ); +extern __mpu_int64_t __cpu_sys_clock_getres( __mpu_uint64_t clockid, + struct __cpu_timespec *res ); +extern __mpu_int64_t __cpu_sys_clock_nanosleep( __mpu_uint64_t clockid, + __mpu_uint64_t flags, + const struct __cpu_timespec *req, + struct __cpu_timespec *rem ); + +#ifdef __cplusplus +} /* ... extern "C" */ +#endif + +#endif /* __CPU_SYSDEPS_H */ |