summaryrefslogtreecommitdiffstats
path: root/sw/z80/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'sw/z80/kernel')
-rw-r--r--sw/z80/kernel/crt0.s103
-rw-r--r--sw/z80/kernel/fs/fd.c255
-rw-r--r--sw/z80/kernel/fs/fs.c236
-rw-r--r--sw/z80/kernel/include/devices.h15
-rw-r--r--sw/z80/kernel/include/errno.h35
-rw-r--r--sw/z80/kernel/include/fs/dev.h29
-rw-r--r--sw/z80/kernel/include/fs/dirent.h17
-rw-r--r--sw/z80/kernel/include/fs/fd.h102
-rw-r--r--sw/z80/kernel/include/fs/fdop.h140
-rw-r--r--sw/z80/kernel/include/fs/fs.h63
-rw-r--r--sw/z80/kernel/include/fs/iter.h17
-rw-r--r--sw/z80/kernel/include/fs/users.h21
-rw-r--r--sw/z80/kernel/include/memory.h50
-rw-r--r--sw/z80/kernel/include/process.h43
-rw-r--r--sw/z80/kernel/include/sio.h43
-rw-r--r--sw/z80/kernel/include/stat.h24
-rw-r--r--sw/z80/kernel/include/types.h62
-rw-r--r--sw/z80/kernel/kernel.c7
-rw-r--r--sw/z80/kernel/makefile53
-rw-r--r--sw/z80/kernel/memory.c94
-rw-r--r--sw/z80/kernel/process.c58
21 files changed, 0 insertions, 1467 deletions
diff --git a/sw/z80/kernel/crt0.s b/sw/z80/kernel/crt0.s
deleted file mode 100644
index 00c7da1..0000000
--- a/sw/z80/kernel/crt0.s
+++ /dev/null
@@ -1,103 +0,0 @@
-;--------------------------------------------------------------------------
-; crt0.s - Generic crt0.s for a Z80
-;
-; Copyright (C) 2000, Michael Hope
-;
-; This library is free software; you can redistribute it and/or modify it
-; under the terms of the GNU General Public License as published by the
-; Free Software Foundation; either version 2, or (at your option) any
-; later version.
-;
-; This library is distributed in the hope that it will be useful,
-; but WITHOUT ANY WARRANTY; without even the implied warranty of
-; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-; GNU General Public License for more details.
-;
-; You should have received a copy of the GNU General Public License
-; along with this library; see the file COPYING. If not, write to the
-; Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
-; MA 02110-1301, USA.
-;
-; As a special exception, if you link this library with other files,
-; some of which are compiled with SDCC, to produce an executable,
-; this library does not by itself cause the resulting executable to
-; be covered by the GNU General Public License. This exception does
-; not however invalidate any other reasons why the executable file
-; might be covered by the GNU General Public License.
-;--------------------------------------------------------------------------
-
- .module crt0
- .globl _kmain
-
- .area _HEADER (ABS)
- ;; Reset vector
- .org 0
- jp init
-
- .org 0x08
- reti
- .org 0x10
- reti
- .org 0x18
- reti
- .org 0x20
- reti
- .org 0x28
- reti
- .org 0x30
- reti
- .org 0x38
- reti
-
- .org 0x100
-init:
- ;; Set stack pointer directly above top of memory.
- ld sp,#0xFFFF
-
- ;; Initialise global variables
- call gsinit
- call _kmain
- jp _exit
-
- ;; Ordering of segments for the linker.
- .area _HOME
- .area _CODE
- .area _INITIALIZER
- .area _GSINIT
- .area _GSFINAL
-
- .area _DATA
- .area _INITIALIZED
- .area _BSEG
- .area _BSS
- .area _HEAP
-
- .area _CODE
-
-__clock::
- ld a,#2
- rst 0x08
- ret
-
-_exit::
- ;; Exit - special code to the emulator
- ld a,#0
- rst 0x08
-1$:
- halt
- jr 1$
-
- .area _GSINIT
-gsinit::
- ; ld bc, #l__INITIALIZER
- ld a, b
- or a, c
- jr Z, gsinit_next
- ; ld de, #s__INITIALIZED
- ; ld hl, #s__INITIALIZER
- ldir
-gsinit_next:
-
- .area _GSFINAL
- ret
-
diff --git a/sw/z80/kernel/fs/fd.c b/sw/z80/kernel/fs/fd.c
deleted file mode 100644
index 96603ad..0000000
--- a/sw/z80/kernel/fs/fd.c
+++ /dev/null
@@ -1,255 +0,0 @@
-#include "fs/fd.h"
-#include "fs/fdop.h"
-#include "fs/fs.h"
-
-/* from fd.h */
-struct file_desc fd_table[FD_TABLE_SIZE];
-struct uint8_t fd_bmap[FD_TABLE_SIZE / 8];
-
-/* File descriptors implementation */
-
-int8_t open(const char *path, uint8_t flags)
-{
- // TODO
- return 0;
-}
-
-size_t ls(int8_t fd, struct dirent *buf, uint8_t all)
-{
- // TODO
- return 0;
-}
-
-size_t find(int8_t fd, struct dirent *buf, const char *name)
-{
- // TODO
- return 0;
-}
-
-int8_t mkdir(int8_t fd, const char *name)
-{
- // TODO
- return 0;
-}
-
-int8_t touch(int8_t fd, const char *name)
-{
- // TODO
- return 0;
-}
-
-int8_t ln(int8_t fd, const char *name)
-{
- // TODO
- return 0;
-}
-
-int8_t seek(int8_t fd, fsize_t pos)
-{
- // TODO
- return 0;
-}
-
-size_t readline(int8_t fd, char *buf, char term)
-{
- // TODO
- return 0;
-}
-
-int8_t print(int8_t fd, const char *str)
-{
- // TODO
- return 0;
-}
-
-size_t read(int8_t fd, void *buf, size_t n)
-{
- // TODO
- return 0;
-}
-
-int8_t write(int8_t fd, const void *buf, size_t n)
-{
- // TODO
- return 0;
-}
-
-void close(int8_t fd)
-{
- // TODO
- return 0;
-}
-
-/* Set of file descriptors operations */
-/* Determines if to use the serial interface or the address space */
-
-/* Address space section */
-
-/* File functions */
-
-size_t as_readline(inode_t inode, fsize_t seek, char *buf, char term)
-{
- // TODO
- return 0;
-}
-
-size_t as_print(inode_t inode, fsize_t seek, const char *str)
-{
- // TODO
- return 0;
-}
-
-size_t as_append(inode_t inode, fsize_t *seek_ptr, const char *str)
-{
- // TODO
- return 0;
-}
-
-size_t as_read(inode_t inode, fsize_t seek, void *buf, size_t n)
-{
- // TODO
- return 0;
-}
-
-size_t as_write(inode_t inode, fsize_t seek, const void *buf, size_t n)
-{
- // TODO
- return 0;
-}
-
-size_t as_bin_append(inode_t inode, fsize_t *seek_ptr, const void *buf, size_t
-n)
-{
- // TODO
- return 0;
-}
-
-/* Directory functions */
-
-size_t as_ls(inode_t inode, struct dirent *buf, uint8_t all)
-{
- // TODO
- return 0;
-}
-
-size_t as_find(inode_t inode, struct dirent *buf, const char *name)
-{
- // TODO
- return 0;
-}
-
-int8_t as_mkdir(inode_t inode, const char *name)
-{
- // TODO
- return 0;
-}
-
-int8_t as_rmdir(inode_t inode, const char *name)
-{
- // TODO
- return 0;
-}
-
-int8_t as_touch(inode_t inode, const char *name)
-{
- // TODO
- return 0;
-}
-
-int8_t as_rm(inode_t inode, const char *name)
-{
- // TODO
- return 0;
-}
-
-int8_t as_ln(inode_t inode, const char *path, const char *name)
-{
- // TODO
- return 0;
-}
-
-/* Serial Space section */
-/* Warning, it doesn't switch to the right driver */
-
-/* File functions */
-
-size_t ss_readline(inode_t inode, fsize_t seek, char *buf, char term)
-{
- // TODO
- return 0;
-}
-
-size_t ss_print(inode_t inode, fsize_t seek, const char *str)
-{
- // TODO
- return 0;
-}
-
-size_t ss_append(inode_t inode, fsize_t *seek_ptr, const char *str)
-{
- // TODO
- return 0;
-}
-
-size_t ss_read(inode_t inode, fsize_t seek, void *buf, size_t n)
-{
- // TODO
- return 0;
-}
-
-size_t ss_write(inode_t inode, fsize_t seek, const void *buf, size_t n)
-{
- // TODO
- return 0;
-}
-
-size_t ss_bin_append(inode_t inode, fsize_t *seek_ptr, const void *buf, size_t
-n)
-{
- // TODO
- return 0;
-}
-
-/* Directory functions */
-
-size_t ss_ls(inode_t inode, struct dirent *buf, uint8_t all)
-{
- // TODO
- return 0;
-}
-
-size_t ss_find(inode_t inode, struct dirent *buf, const char *name)
-{
- // TODO
- return 0;
-}
-
-int8_t ss_mkdir(inode_t inode, const char *name)
-{
- // TODO
- return 0;
-}
-
-int8_t ss_rmdir(inode_t inode, const char *name)
-{
- // TODO
- return 0;
-}
-
-int8_t ss_touch(inode_t inode, const char *name)
-{
- // TODO
- return 0;
-}
-
-int8_t ss_rm(inode_t inode, const char *name)
-{
- // TODO
- return 0;
-}
-
-int8_t ss_ln(inode_t, const char *path, const char *name)
-{
- // TODO
- return 0;
-}
diff --git a/sw/z80/kernel/fs/fs.c b/sw/z80/kernel/fs/fs.c
deleted file mode 100644
index 584f934..0000000
--- a/sw/z80/kernel/fs/fs.c
+++ /dev/null
@@ -1,236 +0,0 @@
-#include "fs/fs.h"
-#include "fs/users.h"
-#include "fs/dev.h"
-
-/* from users.h */
-struct fs_user c_user;
-
-/* from inode.h */
-inode_t c_inode;
-
-struct fs_dev devices[FS_MOUNT_LIMIT];
-
-/* filesystem basic implementation */
-
-devsize_t fs_block(blk_t block)
-{
- // TODO
- return 0;
-}
-
-devsize_t fs_inode(struct fs_inode *buf)
-{
- struct fs_superblock * sb;
- devsize_t seek;
-
- if (FS_USE_ROM(c_inode))
- {
- seek = FS_ROM_SPACE;
- sb = (struct fs_superblock*) seek;
-
- } else {
-
- seek = 0;
-
- if (c_inode.dev > 0x7)
- panic("Invalid device"); // TODO, still to implement
-
- sb = &devices[c_inode.dev].superblock;
- }
-
- if (c_inode.inode >= sb->imap_size)
- {
- // TODO, set errno
- return 0; // inode doesn't exist
- }
-
- seek += sizeof(struct fs_superblock) +
- sizeof(struct fs_inode) * c_inode.inode;
-
- if (FS_USE_ROM(c_inode))
- *buf = *(struct fs_inode*)seek;
- else
- {
- /* set sio port */
- sio_port = devices[c_inode.dev].port_no;
- sio_seek = seek;
-
- if (sio_read((void *)buf, INODE_META_SIZE) < INODE_META_SIZE)
- {
- // TODO, set errno
- return 0; // cannot read to device
- }
- }
-
- return seek + INODE_META_SIZE;
-}
-
-/* from fd.h */
-int8_t __fd_new()
-{
- int8_t fd;
- for (int8_t = 0; i < FD_TABLE_SIZE / 8; i++)
- {
- for (uint8_t bit = 0x80, j = 0; bit > 0; bit >>= 1, j++)
- {
- if (!(bit & fd_bmap[i]))
- return i * 8 + j;
- }
- }
-
- return -1;
-}
-
-/* from fd.h */
-int8_t __open_c_inode(uint8_t flags)
-{
- /* read meta data */
- struct fs_inode inode;
-
- /* init file_desc buffer */
- struct file_desc desc = {c_inode, 0};
-
- desc.begin = fs_inode(&inode);
-
- /* bind operations */
-
- if (flags & OPEN_DIR)
- {
- /* dir handler */
-
- if (inode.type == INODE_TYPE_DIR)
- {
- /* bind dir functions */
- if (FS_USE_ROM(c_inode))
- /* bind address space functions */
- FD_BIND_AS_DIR(desc.opers)
- else
- /* bind serial space functions */
- FD_BIND_SS_DIR(desc.opers)
-
- } else {
-
- // TODO, set errno
- return -1; // not a directory
- }
-
- } else if (flags & OPEN_LINK) {
-
- /* link handler */
-
- if (inode.type == INODE_TYPE_LINK)
- {
- if (FS_USE_ROM(c_inode))
- FD_BIND_AS_FILE(desc.opers, flags)
- else
- FD_BIND_SS_FILE(desc.opers, flags)
-
- if (flags & OPEN_ERASE)
- /* empty file content */
- __inode_empty(desc.begin);
-
- } else {
-
- // TODO, set errno
- return -1; // not a link
- }
-
- } else {
-
- /* file */
-
- if (inode.type == INODE_TYPE_FILE)
- ; // do nothing
- else if (inode.type == INODE_TYPE_SPECIAL) {
-
- // TODO, bind special callbacks
-
- } else {
-
- // TODO, set errno
- return -1;
- }
-
- /* bind operations */
-
- if (FS_USE_ROM(c_inode))
- {
- if (flags & OPEN_BIN)
- FD_BIND_AS_BINFILE(desc.opers, flags)
- else
- FD_BIND_AS_FILE(desc.opers, flags)
-
- } else {
-
- if (flags & OPEN_BIN)
- FD_BIND_SS_BINFILE(desc.opers, flags)
- else
- FD_BIND_SS_FILE(desc.opers, flags)
- }
- }
-
- /* find a free fd space */
-
- int8_t fd = __fd_new();
-
- if (fd < 0)
- {
- // TODO, set errno, fd not available
-
- } else
- fd_table[fd] = desc; // copy buffer into the table
-
- return fd;
-}
-
-inode_t fs_rec_path(const char *path);
-
-inode_t fs_parse_path(const char *path)
-{
- inode_t ino, cwd = c_inode;
-
- switch (path[0])
- {
- case '0':
- FS_INODE_NULL(ino)
- return ino;
-
- case '/':
- FS_INODE_ROOT(ino)
- c_inode = ino; // set cwd to root
- path++;
- break;
-
- case '~':
-
- if (path[1] = '/')
- {
- c_inode.dev = FS_DEV_ROM;
- c_inode.inode = c_user.home; // set cwd to home
- path += 2;
- }
-
- break;
- }
-
- ino = fs_rec_path(path);
- c_inode = cwd;
- return ino;
-}
-
-inode_t fs_rec_path(const char *path)
-{
- devsize_t inode = fs_inode(c_inode.inode);
- inode_t rel;
-
- if (!inode) // if not exists
- {
- FS_INODE_NULL(rel)
- return rel;
- }
-
- // TODO, check if dir or file
- // TODO, if dir, find name
- // TODO, set fs_cwd to new inode
- // TODO, recall fs_rec_path
-}
diff --git a/sw/z80/kernel/include/devices.h b/sw/z80/kernel/include/devices.h
deleted file mode 100644
index a846f9b..0000000
--- a/sw/z80/kernel/include/devices.h
+++ /dev/null
@@ -1,15 +0,0 @@
-#ifndef __DEVICES_H__
-#define __DEVICES_H__
-
-#define ADDR_DEV_ROM_L 0x0000
-#define ADDR_DEV_ROM_H 0x2000
-
-#define ADDR_DEV_USART 0x4000
-#define ADDR_DEV_CTC 0x4100
-#define ADDR_DEV_PIO 0x4200
-
-#define ADDR_DEV_MMU
-
-#define ADDR_DEV_RAM 0x8000
-
-#endif
diff --git a/sw/z80/kernel/include/errno.h b/sw/z80/kernel/include/errno.h
deleted file mode 100644
index 7632269..0000000
--- a/sw/z80/kernel/include/errno.h
+++ /dev/null
@@ -1,35 +0,0 @@
-#ifndef ERRNO_H
-#define ERRNO_H
-
-extern int errno;
-
-#define EPERM 1 /* Operation not permitted */
-#define ENOENT 2 /* No such file or directory */
-#define ESRCH 3 /* No such process */
-#define EINTR 4 /* Interrupted system call */
-#define EIO 5 /* Input/output error */
-#define ENXIO 6 /* Device not configured */
-#define E2BIG 7 /* Argument list too long */
-#define ENOEXEC 8 /* Exec format error */
-#define EBADF 9 /* Bad file descriptor */
-#define ECHILD 10 /* No child processes */
-#define EDEADLK 11 /* Resource deadlock avoided */
-
-#define ENOMEM 12 /* Cannot allocate memory */
-#define EACCES 13 /* Permission denied */
-#define EFAULT 14 /* Bad address */
-
-#define ENOTBLK 15 /* Block device required */
-#define EBUSY 16 /* Device busy */
-#define EEXIST 17 /* File exists */
-
-#define EXDEV 18 /* Cross-device link */
-#define ENODEV 19 /* Operation not supported by device */
-#define ENOTDIR 20 /* Not a directory */
-#define EISDIR 21 /* Is a directory */
-#define EINVAL 22 /* Invalid argument */
-#define ENFILE 23 /* Too many open files in system */
-#define EMFILE 24 /* Too many open files */
-#define ENOTTY 25 /* Inappropriate ioctl for device */
-
-#endif
diff --git a/sw/z80/kernel/include/fs/dev.h b/sw/z80/kernel/include/fs/dev.h
deleted file mode 100644
index 8e550f3..0000000
--- a/sw/z80/kernel/include/fs/dev.h
+++ /dev/null
@@ -1,29 +0,0 @@
-#ifndef DEV_H
-#define DEV_H
-
-#include "types.h"
-
-#define FS_MOUNT_LIMIT 16
-
-struct fs_superblock
-{
- uint8_t magic; // identifier
-
- size_t blk_size; // size of a single block
- size_t imap_size; // quantity of inodes
- size_t dmap_size; // quantity of blocks
-};
-
-struct fs_dev
-{
- uint enabled :1; // in use
- uint port_no :3; // serial port number
- uint :4;
- inode_t inode; // dir mounted
- struct fs_superblock superblock; // block informations
-};
-
-/* list of devices */
-extern struct fs_dev devices[FS_MOUNT_LIMIT];
-
-#endif
diff --git a/sw/z80/kernel/include/fs/dirent.h b/sw/z80/kernel/include/fs/dirent.h
deleted file mode 100644
index 2fd224a..0000000
--- a/sw/z80/kernel/include/fs/dirent.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#ifndef __DIRENT_H__
-#define __DIRENT_H__
-
-#include "types.h"
-
-struct dirent
-{
- ino_t inode; // inode referred
- uint8_t name_size; // size of the name
- char name[]; // name of the referred inode
-};
-
-/* if inode is FS_INO_NULL, then the dirent is a memory leak */
-/* Warning: dirent leaks are generated by rm or rmdir operations */
-/* Filesystem must be periodically checked and cleaned */
-
-#endif // __DIRENT_H__
diff --git a/sw/z80/kernel/include/fs/fd.h b/sw/z80/kernel/include/fs/fd.h
deleted file mode 100644
index d2fea2a..0000000
--- a/sw/z80/kernel/include/fs/fd.h
+++ /dev/null
@@ -1,102 +0,0 @@
-#ifndef __FD_H__
-#define __FD_H__
-
-#include "types.h"
-
-#define FD_MAX 32
-
-#define OPEN_READ 0x1
-#define OPEN_WRITE 0x2
-#define OPEN_BIN 0x4
-#define OPEN_APPEND 0x8
-#define OPEN_ERASE 0x10
-#define OPEN_DIR 0x20
-#define OPEN_LINK 0x40
-
-#define LS_ALL 0x1
-
-/* declare dirent, not include */
-#ifndef __DIRENT_H__
-struct dirent;
-#endif
-
-/* set of operations callback for fd */
-struct fd_operations
-{
- size_t (*readline)(inode_t, fsize_t, char *, char term);
- size_t (*print)(inode_t, fsize_t, const char *);
- size_t (*append)(inode_t, fsize_t*, const char *);
-
- size_t (*read)(inode_t, fsize_t, void *, size_t);
- size_t (*write)(inode_t, fsize_t, const void *, size_t);
- size_t (*bin_append)(inode_t, fsize_t*, const void *, size_t);
-
- size_t (*ls)(inode_t, struct dirent *, uint8_t);
- size_t (*find)(inode_t, struct dirent *, const char *);
- int8_t (*mkdir)(inode_t, const char *);
- int8_t (*rmdir)(inode_t, const char *);
- int8_t (*touch)(inode_t, const char *);
- int8_t (*rm)(inode_t, const char *);
- int8_t (*ln)(inode_t, const char *, const char *);
-
- int8_t (*special)(inode_t, void *, size_t);
-};
-
-/* file descriptor */
-struct file_desc
-{
- inode_t inode; // inode pointed
- fsize_t seek; // virtual seek
- devsize_t begin; // beginning of blocks
- struct fd_operations opers; // bound operations
-};
-
-/* bitmap of used file descriptors */
-extern struct uint8_t fd_bmap[FD_TABLE_SIZE / 8];
-
-/* table of file descriptors */
-extern struct file_desc fd_table[FD_TABLE_SIZE];
-
-/* returns a free file descriptor */
-int8_t __fd_new();
-
-/* opens a file streaming of the cwd */
-int8_t __open_c_inode(uint8_t flags);
-
-/* opens a file streaming by a path */
-int8_t open(const char *path, uint8_t flags);
-
-/* list content of directory */
-size_t ls(int8_t fd, struct dirent *buf, uint8_t all);
-
-/* find name through the directory entries */
-size_t find(int8_t fd, struct dirent *buf, const char *name);
-
-/* creates a new directory inside fd with the specified name */
-int8_t mkdir(int8_t fd, const char *name);
-
-/* creates a new file inside fd with the specified name */
-int8_t touch(int8_t fd, const char *name);
-
-/* creates a new symlink inside fd with the specified name */
-int8_t ln(int8_t fd, const char *name);
-
-/* change virtual seek position of the fd */
-int8_t seek(int8_t fd, fsize_t pos);
-
-/* reads a string from the fd until the terminator is reached */
-size_t readline(int8_t fd, char *buf, char term);
-
-/* writes a string into the fd */
-int8_t print(int8_t fd, const char *str);
-
-/* reads n bytes from the fd */
-size_t read(int8_t fd, void *buf, size_t n);
-
-/* writes n bytes into the fd */
-int8_t write(int8_t fd, const void *buf, size_t n);
-
-/* frees fd space */
-void close(int8_t fd);
-
-#endif // __FD_H__
diff --git a/sw/z80/kernel/include/fs/fdop.h b/sw/z80/kernel/include/fs/fdop.h
deleted file mode 100644
index d4b1b77..0000000
--- a/sw/z80/kernel/include/fs/fdop.h
+++ /dev/null
@@ -1,140 +0,0 @@
-#ifndef __FDOP_H__
-#define __FDOP_H__
-
-#include "types.h"
-
-#ifndef __DIRENT_H__
-struct dirent;
-#endif
-
-/* macro for direct binding */
-
-#define FD_BIND_AS_DIR(oper) { \
- oper.ls = &as_ls; \
- oper.find = &as_find; \
- oper.mkdir = &as_mkdir; \
- oper.rmdir = &as_rmdir; \
- oper.touch = &as_touch; \
- oper.rm = &as_rm; \
- oper.ln = &as_ln; \
- }
-
-#define FD_BIND_SS_DIR(oper) { \
- oper.ls = &ss_ls; \
- oper.find = &ss_find; \
- oper.mkdir = &ss_mkdir; \
- oper.rmdir = &ss_rmdir; \
- oper.touch = &ss_touch; \
- oper.rm = &ss_rm; \
- oper.ln = &ss_ln; \
- }
-
-#define FD_BIND_AS_FILE(opers, flags) { \
- if (flags & OPEN_READ) \
- opers.readline = as_readline; \
- if (flags & OPEN_APPEND) \
- opers.append = as_append; \
- else if (flags & OPEN_WRITE) \
- opers.print = as_print; \
- }
-
-#define FD_BIND_SS_FILE(opers, flags) { \
- if (flags & OPEN_READ) \
- opers.readline = ss_readline; \
- if (flags & OPEN_APPEND) \
- opers.append = ss_append; \
- else if (flags & OPEN_WRITE) \
- opers.print = ss_print; \
- }
-
-#define FD_BIND_AS_BINFILE(opers, flags) { \
- if (flags & OPEN_READ) \
- opers.read = as_read; \
- if (flags & OPEN_APPEND) \
- opers.bin_append = as_bin_append; \
- else if (flags & OPEN_WRITE) \
- opers.write = as_write; \
- }
-
-#define FD_BIND_SS_BINFILE(opers, flags) { \
- if (flags & OPEN_READ) \
- opers.read = ss_read; \
- if (flags & OPEN_APPEND) \
- opers.bin_append = ss_bin_append; \
- else if (flags & OPEN_WRITE) \
- opers.write = ss_write; \
- }
-
-/* Set of file descriptors operations */
-/* Determines if to use the serial interface or the address space */
-
-/* Address space section */
-
-/* File functions */
-
-size_t as_readline(inode_t inode, fsize_t seek, char *buf, char term);
-
-size_t as_print(inode_t inode, fsize_t seek, const char *str);
-
-size_t as_append(inode_t inode, fsize_t *seek_ptr, const char *str);
-
-
-size_t as_read(inode_t inode, fsize_t seek, void *buf, size_t n);
-
-size_t as_write(inode_t inode, fsize_t seek, const void *buf, size_t n);
-
-size_t as_bin_append(inode_t inode, fsize_t *seek_ptr, const void *buf, size_t
-n);
-
-/* Directory functions */
-
-size_t as_ls(inode_t inode, struct dirent *buf, uint8_t all);
-
-size_t as_find(inode_t inode, struct dirent *buf, const char *name);
-
-int8_t as_mkdir(inode_t inode, const char *name);
-
-int8_t as_rmdir(inode_t inode, const char *name);
-
-int8_t as_touch(inode_t inode, const char *name);
-
-int8_t as_rm(inode_t inode, const char *name);
-
-int8_t as_ln(inode_t inode, const char *path, const char *name);
-
-/* Serial Space section */
-/* Warning, it doesn't switch to the right driver */
-
-/* File functions */
-
-size_t ss_readline(inode_t inode, fsize_t seek, char *buf, char term);
-
-size_t ss_print(inode_t inode, fsize_t seek, const char *str);
-
-size_t ss_append(inode_t inode, fsize_t *seek_ptr, const char *str);
-
-
-size_t ss_read(inode_t inode, fsize_t seek, void *buf, size_t n);
-
-size_t ss_write(inode_t inode, fsize_t seek, const void *buf, size_t n);
-
-size_t ss_bin_append(inode_t inode, fsize_t *seek_ptr, const void *buf, size_t
-n);
-
-/* Directory functions */
-
-size_t ss_ls(inode_t inode, struct dirent *buf, uint8_t all);
-
-size_t ss_find(inode_t inode, struct dirent *buf, const char *name);
-
-int8_t ss_mkdir(inode_t inode, const char *name);
-
-int8_t ss_rmdir(inode_t inode, const char *name);
-
-int8_t ss_touch(inode_t inode, const char *name);
-
-int8_t ss_rm(inode_t inode, const char *name);
-
-int8_t ss_ln(inode_t, const char *path, const char *name);
-
-#endif // __FDOP_H__
diff --git a/sw/z80/kernel/include/fs/fs.h b/sw/z80/kernel/include/fs/fs.h
deleted file mode 100644
index ad20adb..0000000
--- a/sw/z80/kernel/include/fs/fs.h
+++ /dev/null
@@ -1,63 +0,0 @@
-#ifndef __FS_H__
-#define __FS_H__
-
-#include "types.h"
-
-#define FS_OFFSET 0x1000
-
-#define FS_BLOCKS_SIZE 512
-#define FS_BLOCKS_N 8
-#define FS_BLOCKS_IND 6
-
-#define INODE_TYPE_FILE 0x0
-#define INODE_TYPE_DIR 0x1
-#define INODE_TYPE_SLINK 0x2
-#define INODE_TYPE_SPECIAL 0x3
-
-#define INODE_META_SIZE 8
-
-/* inode basic structure */
-struct fs_inode
-{
- /* inode meta data */
-
- uint mode :3; // chmod
- uint uid :3; // chown
- uint type :2; // file, dir, sym-link, special
-
- time_t ctime; // creation time
-
- uint24_t size; // inode size
-
- /* data storage informations */
- /* it doesn't allocate memory, virtual size FS_BLOCKS_N */
- blk_t blocks[];
-};
-
-#define FS_DEV_ROM 0x7f /* 01111111 */
-#define FS_DEV_NULL 0x80 /* 10000000 */
-
-#define FS_ROM_SPACE 0x2000 // second rom
-
-#define FS_INO_ROOT 0x0 // first inode
-
-#define FS_INODE_ROOT(inode) {inode.dev = 0xff; inode.inode = 0x0}
-#define FS_INODE_NULL(inode) {inode.dev = 0x80; inode.inode = 0x0}
-
-#define FS_USE_ROM(inode) {inode.dev == 0x7f}
-
-/* get block seek in current device */
-devsize_t fs_block(blk_t block);
-
-/* get common inode seek in current device */
-/* c_inode must be set first */
-/* returns seek at the beginning of blocks field */
-devsize_t fs_inode(struct fs_inode *buf);
-
-/* common inode for syscalls */
-extern inode_t c_inode;
-
-/* parse a path, absolute or relative to c_inode */
-inode_t fs_parse_path(const char *path);
-
-#endif // __FS_H__
diff --git a/sw/z80/kernel/include/fs/iter.h b/sw/z80/kernel/include/fs/iter.h
deleted file mode 100644
index 41f011d..0000000
--- a/sw/z80/kernel/include/fs/iter.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#ifndef __ITER_H__
-#define __ITER_H__
-
-struct inode_iter
-{
- devsize_t dev_seek; /* seek position in the volume */
- devsize_t blk_end; /* end of the block */
-
- int16_t blk_index; /* index of the block */
-
- int8_t blk_level; /* recursion level, indirect blocks */
-
- fsize_t fseek; /* virtual seek in the file */
- fsize_t size; /* file size */
-};
-
-#endif // __ITER_H__
diff --git a/sw/z80/kernel/include/fs/users.h b/sw/z80/kernel/include/fs/users.h
deleted file mode 100644
index 83980e5..0000000
--- a/sw/z80/kernel/include/fs/users.h
+++ /dev/null
@@ -1,21 +0,0 @@
-#ifndef USERS_H
-#define USERS_H
-
-#include "types.h"
-
-#define USERS_MAX 8
-#define USER_ROOT 0
-
-/* current user in use */
-extern struct fs_user c_user;
-
-struct fs_user
-{
- char name[32];
- ino_t home;
- uint8_t perm; // TODO, permissions
-};
-
-/* all users are in rom device */
-
-#endif
diff --git a/sw/z80/kernel/include/memory.h b/sw/z80/kernel/include/memory.h
deleted file mode 100644
index 67c4b88..0000000
--- a/sw/z80/kernel/include/memory.h
+++ /dev/null
@@ -1,50 +0,0 @@
-#ifndef __MEMORY_H__
-#define __MEMORY_H__
-
-#include "types.h"
-#include "devices.h"
-
-/* maximum number of pages on the system */
-#define PAGES_MAX_COUNT 32
-#define PAGE_SIZE 1000
-
-/* in our system there are only 16 pages since only 64KB can be addressed
- * to optimize the memory management in ROM and RAM only pages from this set
- * shall be used
- */
-// ROM
-#define ADDR_PAGE_0 0x0000
-#define ADDR_PAGE_1 0x1000
-#define ADDR_PAGE_2 0x2000
-#define ADDR_PAGE_3 0x3000
-// IOSPACE
-#define ADDR_PAGE_4 0x4000
-#define ADDR_PAGE_5 0x5000
-#define ADDR_PAGE_6 0x6000
-#define ADDR_PAGE_7 0x7000
-// RAM
-#define ADDR_PAGE_8 0x8000
-#define ADDR_PAGE_9 0x9000
-#define ADDR_PAGE_10 0xA000
-#define ADDR_PAGE_11 0xB000
-#define ADDR_PAGE_12 0xC000
-#define ADDR_PAGE_13 0xD000
-#define ADDR_PAGE_14 0xE000
-#define ADDR_PAGE_15 0xF000
-
-#define ADDR_PAGE_FIRST ADDR_PAGE_8
-#define ADDR_PAGE_LAST ADDR_PAGE_15
-
-struct page
-{
- pid_t pid; // process owner of the page (0 if free)
- uint16_t addr; // physical address
-};
-
-int mmu_write_table(void);
-
-int page_new(void);
-int page_map(int page, int pid, uint16_t addr);
-int page_unmap(int page);
-
-#endif // __MEMORY_H__
diff --git a/sw/z80/kernel/include/process.h b/sw/z80/kernel/include/process.h
deleted file mode 100644
index 3b0c843..0000000
--- a/sw/z80/kernel/include/process.h
+++ /dev/null
@@ -1,43 +0,0 @@
-#ifndef __PROCESS_H__
-#define __PROCESS_H__
-
-#include "types.h"
-#include "memory.h"
-
- /* maximum number of processes (i.e. pages in ram)
- * since each program can use only one page in ram
- */
-#define PROC_COUNT 2
-
-/* the pid is defined with a single byte (pid_t is uint8_t), because of that
- * there cannot be more than 255 processes open at the same time. this is a
- * limitation but for our purposes is more than enough
- */
-#define PID_COUNT_MAX 255
-
-struct executable
-{
- void *text;
- size_t text_size;
- void *bss;
- size_t bss_size;
-};
-
-struct process
-{
- uint blocked :1; // process is waiting for hardware or locked
- uint running :1; // pid is used
- uint pages; // number of pages used by the process
- struct page page[4]; // pages used by the process
-};
-
-pid_t newpid(void);
-
-int fork(void);
-int exec(char *path, char *args);
-int spawn(char *path, char *args);
-
-pid_t getpid(void);
-int kill(pid_t pid);
-
-#endif // __PROCESS_H__
diff --git a/sw/z80/kernel/include/sio.h b/sw/z80/kernel/include/sio.h
deleted file mode 100644
index 276b99c..0000000
--- a/sw/z80/kernel/include/sio.h
+++ /dev/null
@@ -1,43 +0,0 @@
-#ifndef __SIO_H__
-#define __SIO_H__
-
-#include "types.h"
-
-#define SIO_PORT_0 0x0
-#define SIO_PORT_1 0x1
-#define SIO_PORT_2 0x2
-#define SIO_PORT_3 0x3
-#define SIO_PORT_4 0x4
-#define SIO_PORT_5 0x5
-#define SIO_PORT_6 0x6
-#define SIO_PORT_7 0x7
-
-/* current port in use */
-extern uint8_t sio_port;
-
-/* current seek in the device */
-extern devsize_t sio_seek;
-
-struct dev_buffer
-{
- // TODO, bytes needed to the device buffer interface
-};
-
-/* points to the buffers mapped in the I/O space */
-/* to be defined precisely in assembly */
-extern volatile struct dev_buffer sio_buffers[8];
-
-/* initialize serial interface */
-void sio_init();
-
-/* syscall: read one byte from the current device */
-uint8_t sio_recv();
-/* syscall: write one byte into the current device */
-void sio_send(uint8_t value);
-
-/* read n bytes from the current port */
-size_t sio_read(void *buffer, size_t n);
-/* write n bytes into the current port */
-int8_t sio_write(const void *buffer, size_t n);
-
-#endif // __SIO_H__
diff --git a/sw/z80/kernel/include/stat.h b/sw/z80/kernel/include/stat.h
deleted file mode 100644
index 44c0f63..0000000
--- a/sw/z80/kernel/include/stat.h
+++ /dev/null
@@ -1,24 +0,0 @@
-#ifndef __STAT_H__
-#define __STAT_H__
-
-#include "types.h"
-
-struct stat
-{
- inode_t inode; /* inode reference */
-
- uint mode :3; /* mode */
- uint uid :3; /* owner id */
- uint type :2; /* file, dir or link */
-
- devsize_t size; /* file size */
-
- size_t blk_size; /* single block size */
- size_t blk_used; /* blocks used by the file */
-
- time_t ctime; /* creation time */
-}
-
-struct stat * stat(const char *path, struct stat *buffer);
-
-#endif // __STAT_H__
diff --git a/sw/z80/kernel/include/types.h b/sw/z80/kernel/include/types.h
deleted file mode 100644
index c6e620b..0000000
--- a/sw/z80/kernel/include/types.h
+++ /dev/null
@@ -1,62 +0,0 @@
-#ifndef __TYPES_H__
-#define __TYPES_H__
-
-/* only types from primitive types are defined in this file */
-
-typedef volatile unsigned char register_t;
-
-typedef unsigned int uint;
-
-typedef char int8_t;
-typedef unsigned char uint8_t;
-typedef int int16_t;
-typedef unsigned int uint16_t;
-typedef long int int32_t;
-typedef unsigned long int uint32_t;
-
-typedef uint16_t size_t;
-typedef int16_t ssize_t;
-
-typedef uint8_t pid_t;
-typedef uint16_t ino_t;
-
-typedef uint8_t dev_t;
-typedef uint32_t devsize_t;
-typedef uint8_t fd_t;
-typedef uint16_t blk_t;
-typedef uint8_t user_t;
-
-typedef struct {
- uint8_t member[3];
-
-} uint24_t;
-
-typedef uint32_t fsize_t;
-
-typedef struct
-{
- dev_t dev; // device id, global in the fs
- ino_t inode; // inode id relative to the volume
-
-} inode_t;
-
-typedef struct time_s
-{
- struct
- {
- uint minutes :6;
- uint hour :5;
-
- } time;
-
- struct
- {
- uint day :5;
- uint month :4;
- uint year :12;
-
- } date;
-
-} time_t;
-
-#endif
diff --git a/sw/z80/kernel/kernel.c b/sw/z80/kernel/kernel.c
deleted file mode 100644
index 3d5aeb6..0000000
--- a/sw/z80/kernel/kernel.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include "types.h"
-#include "usart.h"
-
-void kmain(void)
-{
- usart_init(USART_BAUDRATE_9600, USART_PARITY_EVEN, USART_STOP_BITS_1);
-}
diff --git a/sw/z80/kernel/makefile b/sw/z80/kernel/makefile
deleted file mode 100644
index be8eed4..0000000
--- a/sw/z80/kernel/makefile
+++ /dev/null
@@ -1,53 +0,0 @@
-####
-# source code settings
-#
-OSNAME := helvetiOS
-
-CSOURCES := $(wildcard *.c) \
- $(wildcard drivers/*.c)
-
-OBJECTS := $(patsubst %.c,build/%.rel,$(CSOURCES))
-HEXFILE := build/$(OSNAME).hex
-BINARY := build/$(OSNAME).bin
-
-###
-# compiler settings
-
-CC := sdcc
-
-CFLAGS := -mz80 \
- -I include \
- -I include/drivers \
- -I libc/include \
- --opt-code-size \
- -DDEBUG
-
-LDFLAGS := -mz80 --no-std-crt0 build/crt0.rel \
- --std-c89 -pedantic \
- --code-loc 0x0800 --data-loc 0x8000
-
-.PHONY: dirs dis clean
-all: $(BINARY)
-
-# build binary
-$(BINARY): $(OBJECTS) dirs
- $(CC) $(LDFLAGS) $(OBJECTS) -o $(HEXFILE)
- makebin -s 16384 $(HEXFILE) $(BINARY)
-
-$(OBJECTS): build/%.rel : %.c $(CSOURCES) dirs build/crt0.rel
- @printf "\n"
- $(CC) $(CFLAGS) -c $< -o $@
-
-build/crt0.rel: crt0.s
- sdasz80 -o $<
- @mv crt0.rel build
-
-dirs:
- mkdir -p build build/kernel build/libc build/kernel/drivers
-
-dis: $(BINARY)
- dz80 -b -n $<
-
-clean:
- - rm -rd build/*
- - rm crt0.rel
diff --git a/sw/z80/kernel/memory.c b/sw/z80/kernel/memory.c
deleted file mode 100644
index 1b2cc76..0000000
--- a/sw/z80/kernel/memory.c
+++ /dev/null
@@ -1,94 +0,0 @@
-#include "memory.h"
-
-static struct page pages_table[PAGES_MAX_COUNT];
-
-int mmu_write_table(void)
-{
- int i;
-
- for (i = 0; i < PAGES_MAX_COUNT; i++) {
- if (pages_table[i].pid != 0) {
- // write to mmu table
- }
- }
-
- return 0;
-}
-
-int page_new(void)
-{
- int i, used;
- uint16_t addr;
-
- for (addr = ADDR_PAGE_FIRST; addr < ADDR_PAGE_LAST; addr += PAGE_SIZE) {
- used = 0;
-
- for (i = 0; i < PAGES_MAX_COUNT; i++) {
- if (pages_table[i].addr == addr) {
- used = 1;
- break;
- }
- }
-
- if (!used)
- return i;
- }
-
- return -1;
-}
-
-int page_map(int page, int pid, uint16_t addr)
-{
- if (page >= PAGES_MAX_COUNT)
- return -1;
-
- if (pages_table[page].pid != 0)
- return -2;
-
- pages_table[page].addr = addr;
- pages_table[page].pid = pid;
-
- return 0;
-}
-
-int page_unmap(int page)
-{
- if (page >= PAGES_MAX_COUNT)
- return -1;
-
- if (pages_table[page].pid == 0)
- return -2;
-
- pages_table[page].pid = 0;
- pages_table[page].addr = 0;
- return 0;
-}
-
-/* k_malloc manager */
-/*
-struct k_buf_entry k_buf_table[K_BUF_MAX_COUNT];
-
-struct k_buf k_buffers[K_BUF_MAX_COUNT];
-
-void * k_malloc()
-{
- for (uint8_t i = 0; i < K_BUF_TABLE_COUNT; i++)
- {
- for (uint8_t bit = 0x80, j = 0; j < 8; bit >>= 1, j++)
- {
- if (bit & k_buf_table[i])
- {
- k_buf_table[i] |= bit;
- return &k_buffers[8 * i + j];
- }
- }
- }
-}
-
-void k_free(void * ptr)
-{
- uint8_t index = (ptr - &k_buffers[0]) / K_BUF_SIZE;
-
- if (index < K_BUF_MAX_COUNT)
- k_buf_table[index / 8] ^= 0x80 >> index % 8;
-}*/
diff --git a/sw/z80/kernel/process.c b/sw/z80/kernel/process.c
deleted file mode 100644
index 7d8db89..0000000
--- a/sw/z80/kernel/process.c
+++ /dev/null
@@ -1,58 +0,0 @@
-#include "process.h"
-
-static struct process proc_table[PID_COUNT_MAX];
-static struct process *current_proc;
-
-pid_t newpid(void)
-{
- int i;
- static pid_t last_pid = 0;
-
- for (i = 0; i < PID_COUNT_MAX; i++, last_pid++) {
- if (last_pid == PID_COUNT_MAX) {
- last_pid = 0;
- continue;
- }
-
- if (!proc_table[last_pid].running)
- break;
- }
-
- if (i >= PID_COUNT_MAX)
- return 0;
-
- return last_pid;
-}
-
-int fork(void)
-{
- int i, p;
- pid_t child_pid = newpid();
-
- if (child_pid == 0)
- return -1;
-
-
- for (i = 0; i < current_proc->pages; i++) {
- p = page_new();
-
- if (p == -1) {
- return -2;
- }
-
- // TODO: use memcpy()
- // SDCC does not allow assignemnts of structs
-
- // proc_table[child_pid].page[i] = p;
- }
-}
-
-int exec(char *path, char *args)
-{
-
-}
-
-int spawn(char *path, char *args)
-{
-
-}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-15 12:17:33 +0100