Initial revision
2002-12-27  Yoshinori K. Okuji  <okuji@enbug.org>

	* Makefile.in (BUILD_CC): CC -> BUILD_CC.
2002-12-27  Yoshinori K. Okuji  <okuji@enbug.org>

	* configure.ac: Check ld.
	Replace CFLAGS and CPPFLAGS with BUILD_CFLAGS and BUILD_CPPFLAGS
	respectively, before checking endianness and sizes.

	* Makefile.in (LD): New variable.
2002-12-28  Yoshinori K. Okuji  <okuji@enbug.org>

	Use -mrtd and -mregparm=3 to reduce the generated code sizes.
	This means that any missing prototypes could be fatal. Also, you
	must take care when writing assembly code. See the comments at
	the beginning of startup.S, for more details.

	* kern/i386/pc/startup.S (pupa_halt): Modified for the new
	compilation mechanism.
	(pupa_chainloader_real_boot): Likewise.
	(pupa_biosdisk_rw_int13_extensions): Likewise.
	(pupa_biosdisk_rw_standard): Likewise.
	(pupa_biosdisk_check_int13_extensions): Likewise.
	(pupa_biosdisk_get_diskinfo_int13_extensions): Likewise.
	(pupa_biosdisk_get_diskinfo_standard): Likewise.
	(pupa_get_memsize): Likewise.
	(pupa_get_mmap_entry): Likewise.
	(pupa_console_putchar): Likewise.
	(pupa_console_setcursor): Likewise.
	(pupa_getrtsecs): Use pushl instead of push.

	* kern/i386/pc/init.c (pupa_machine_init): Use the scratch
	memory instead of the stack for a mmap entry, because some
	BIOSes may ignore the maximum size and overflow.

	* conf/i386-pc.rmk (COMMON_CFLAGS): Added -mrtd and -mregparm=3.

	* genmk.rb (PModule#rule): Compile automatically generated
	sources with module-specific CFLAGS as well as other sources.
2002-12-28  Yoshinori K. Okuji  <okuji@enbug.org>

	* kern/i386/pc/startup.S (push_get_mmap_entry): Revert to a
	bunch of pushl's from pusha, because this destroys the return
	value.
2003-01-03  Yoshinori K. Okuji  <okuji@enbug.org>

	* include/i386/pc/util/biosdisk.h: New file.
	* util/i386/pc/biosdisk.c: Likewise.
	* util/i386/pc/pupa-setup.c: Likewise.

	* Makefile.in (INCLUDE_DISTFILES): Added
	include/pupa/i386/pc/util/biosdisk.h.
	(UTIL_DISTFILES): Added biosdisk.c and pupa-setup.c under the
	directory util/i386/pc.
	(install-local): Added a rule for sbin_UTILITIES.
	(uninstall): Likewise.

	* util/i386/pc/pupa-mkimage.c (usage): Fix a typo in the doc.

	* util/misc.c (xrealloc): New function.
	(pupa_malloc): Likewise.
	(pupa_free): Likewise.
	(pupa_realloc): Likewise.
	(pupa_stop): Likewise.
	(pupa_putchar): Likewise.

	* kern/disk.c (pupa_disk_read): Prevent L from underflowing.

	* include/pupa/util/misc.h (xrealloc): Declared.

	* include/pupa/i386/pc/boot.h (PUPA_BOOT_MACHINE_BPB_START): New
	macro.
	(PUPA_BOOT_MACHINE_BPBEND): Renamed to ...
	(PUPA_BOOT_MACHINE_BPB_END): ... this.

	* include/pupa/fs.h [PUPA_UTIL] (pupa_fat_init): Declared.
	[PUPA_UTIL] (pupa_fat_fini): Likewise.

	* fs/fat.c [PUPA_UTIL] (pupa_fat_init): Defined. Maybe a better
	way should be implemented.
	[PUPA_UTIL] (pupa_fat_fini): Likewise.

	* disk/i386/pc/biosdisk.c (pupa_biosdisk_call_hook): Increase
	the size of NAME for safety.
	(pupa_biosdisk_iterate): Search hard disks to 0x90 instead of
	0x88.

	* conf/i386-pc.rmk (sbin_UTILITIES): New variable.
	(pupa_setup_SOURCES): Likewise.

	* genmk.rb (Utility#rule): Add $(BUILD_CFLAGS) into the rules.
2003-01-03  Yoshinori K. Okuji  <okuji@enbug.org>

	* util/i386/pc/pupa-setup.c (setup): Define the internal
	function find_first_partition_start at the top level, because GCC
	3.0.x cannot compile internal functions in deeper scopes
	correctly.
	(find_root_device): Use lstat instead of stat.
	Don't follow symbolic links.
	Fix the path-constructing code.

	* util/i386/pc/biosdisk.c [__linux__] (BLKFLSBUF): New macro.
	(pupa_util_biosdisk_open) [__linux__]: Get the size of a device
	by a BLKGETSIZE ioctl first, because block devices don't fill
	the member st_mode of the structure stat on Linux.
	[__linux__] (linux_find_partition): Use a temporary buffer
	REAL_DEV for the working space. Copy it to DEV before returning.
	(open_device) [__linux__]: Call ioctl with BLKFLSBUF to make the
	buffer cache consistent.
	(get_os_disk) [__linux__]: Use the length 5 instead of 4 for
	strncmp. The previous value was merely wrong.
	(pupa_util_biosdisk_get_pupa_dev): Use stat instead of lstat.

	* fs/fat.c (pupa_fat_read_data): Shift 4 instead of 12 when the
	FAT size is 12. The previous value was merely wrong.

	* kern/main.c (pupa_main): Don't split the starting message from
	newlines.

	* kern/term.c (pupa_putchar): Put CR after LF instead of before
	LF, because BIOS goes crazy about character attributes in this
	case.
2003-01-06  Yoshinori K. Okuji  <okuji@enbug.org>

	* util/i386/pc/pupa-setup.c: Include pupa/machine/kernel.h.
	(setup): Configure the installed partition information and the
	dl prefix.

	* loader/i386/pc/chainloader.c (my_mod): New variable.
	(pupa_chainloader_unload): New function.
	(pupa_rescue_cmd_chainloader): Refer itself.
	(PUPA_MOD_INIT): Save its own module in MY_MOD.

	* kern/i386/pc/startup.S (install_partition): Removed.
	(version_string): Likewise.
	(config_file): Likewise.
	(pupa_install_dos_part): New variable.
	(pupa_install_bsd_part): Likewise.
	(pupa_prefix): Likewise.
	(pupa_chainloader_real_boot): Call pupa_dl_unload_all.

	* kern/i386/pc/init.c: Include pupa/machine/kernel.h, pupa/dl.h
	and pupa/misc.h.
	(make_install_device): New function.
	(pupa_machine_init): Set the dl prefix.

	* kern/rescue.c: Include pupa/rescue.h and pupa/dl.h.
	(buf): Renamed to ...
	(linebuf): ... this.
	(pupa_rescue_cmd_prefix): New function.
	(pupa_rescue_cmd_insmod): Likewise.
	(pupa_rescue_cmd_rmmod): Likewise.
	(pupa_rescue_cmd_lsmod): Likewise.
	(pupa_enter_rescue_mode): Register new commands: prefix, insmod,
	rmmod and lsmod.

	* kern/mm.c (pupa_memalign): If failed even after invalidating
	disk caches, unload unneeded modules and retry.

	* kern/misc.c (pupa_memmove): New function.
	(pupa_memcpy): Removed.
	(pupa_strcpy): New function.
	(pupa_itoa): Made static.

	* kern/dl.c (pupa_dl_iterate): New function.
	(pupa_dl_ref): Likewise.
	(pupa_dl_unref): Likewise.
	(pupa_dl_unload): Return if succeeded or not.
	(pupa_dl_unload_unneeded): New function.
	(pupa_dl_unload_all): Likewise.
	(pupa_dl_init): Renamed to ...
	(pupa_dl_set_prefix): ... this.
	(pupa_dl_get_prefix): New function.

	* include/pupa/i386/pc/kernel.h: Include pupa/types.h.
	(PUPA_KERNEL_MACHINE_INSTALL_DOS_PART): New macro.
	(PUPA_KERNEL_MACHINE_INSTALL_BSD_PART): Likewise.
	(PUPA_KERNEL_MACHINE_PREFIX): Likewise.
	(pupa_install_dos_part): Declared.
	(pupa_install_bsd_part): Likewise.
	(pupa_prefix): Likewise.
	(pupa_boot_drive): Likewise.

	* include/pupa/types.h: Fix a typo.

	* include/pupa/misc.h (pupa_memcpy): New macro. Just an alias to
	pupa_memmove.
	(pupa_memmove): Declared.
	(pupa_strcpy): Likewise.

	* include/pupa/dl.h (PUPA_MOD_INIT): Change the prototype. Now
	pupa_mod_init takes one argument, its own module.
	(pupa_dl_unload_unneeded): Declared.
	(pupa_dl_unload_all): Likewise.
	(pupa_dl_ref): Likewise.
	(pupa_dl_unref): Likewise.
	(pupa_dl_iterate): Likewise.
	(pupa_dl_init): Renamed to ...
	(pupa_dl_set_prefix): ... this.
	(pupa_dl_get_prefix): Declared.

	* fs/fat.c [!PUPA_UTIL] (my_mod): New variable.
	(pupa_fat_dir) [!PUPA_UTIL]: Prevent the fat module from being
	unloaded.
	(pupa_fat_open) [!PUPA_UTIL]: Refer itself if succeeded.
	(pupa_fat_close) [!PUPA_UTIL]: Unrefer itself.

	* configure.ac (tmp_CFLAGS): Added -Wshadow, -Wpointer-arith,
	-Wmissing-prototypes, -Wundef and -Wstrict-prototypes.
2003-01-07  Yoshinori K. Okuji  <okuji@enbug.org>

	* util/i386/pc/pupa-setup.c (setup): Convert the endianness of
		the length of a blocklist correctly.

			* util/i386/pc/biosdisk.c (pupa_util_biosdisk_open) [__linux__]:
				Use ioctl only if the OS file is a block device.
					(pupa_util_biosdisk_open): Don't use ST.ST_BLOCKS, because it is
						not very useful for normal files.

							* kern/main.c (pupa_set_root_dev): New function.
								(pupa_load_normal_mode): Likewise.
									(pupa_main): Call those above.

										* include/pupa/types.h (pupa_swap_bytes16): Cast the result to
											pupa_uint16_t.

												* include/pupa/kernel.h (pupa_enter_normal_mode): Removed.
2003-01-17  Yoshinori K. Okuji  <okuji@enbug.org>

	* include/pupa/i386/pc/linux.h: New file.
	* loader/i386/pc/linux.c: Likewise.

	* loader/i386/pc/chainloader.c (pupa_chainloader_boot_sector):
	Removed.
	(pupa_chainloader_unload): Return PUPA_ERR_NONE.
	(pupa_rescue_cmd_chainloader): Read the image to 0x7C00 instead
	of PUPA_CHAINLOADER_BOOT_SECTOR.

	* kern/i386/pc/startup.S: Include pupa/machine/linux.h.
	(pupa_linux_prot_size): New variable.
	(pupa_linux_tmp_addr): Likewise.
	(pupa_linux_real_addr): Likewise.
	(pupa_linux_boot_zimage): New function.
	(pupa_linux_boot_bzimage): Likewise.

	* kern/i386/pc/init.c (struct mem_region): New structure.
	(MAX_REGIONS): New macro.
	(mem_regions): New variable.
	(num_regions): Likewise.
	(pupa_os_area_addr): Likewise.
	(pupa_os_area_size): Likewise.
	(pupa_lower_mem): Likewise.
	(pupa_upper_mem): Likewise.
	(add_mem_region): New function.
	(compact_mem_regions): Likewise.
	(pupa_machine_init): Set PUPA_LOWER_MEM and PUPA_UPPER_MEM to
	the size of the conventional memory and that of so-called upper
	memory (before the first memory hole).
	Instead of adding each found region to free memory, use
	add_mem_region and add them after removing overlaps.
	Also, add only 1/4 of the upper memory to free memory. The rest
	is used for loading OS images. Maybe this is ad hoc, but this
	makes it much easier to relocate OS images when booting.

	* kern/rescue.c (pupa_rescue_cmd_module): Removed.
	(pupa_enter_rescue_mode): Don't register initrd and module.

	* kern/mm.c: Include pupa/dl.h.

	* kern/main.c: Include pupa/file.h and pupa/device.h.

	* kern/loader.c (pupa_loader_load_module_func): Removed.
	(pupa_loader_load_module): Likewise.

	* kern/dl.c (pupa_dl_load): Use the suffix ``.mod'' instead of
	``.o''.

	* include/pupa/i386/pc/loader.h (pupa_linux_prot_size): Declared.
	(pupa_linux_tmp_addr): Likewise.
	(pupa_linux_real_addr): Likewise.
	(pupa_linux_boot_zimage): Likewise.
	(pupa_linux_boot_bzimage): Likewise.

	* include/pupa/i386/pc/init.h (pupa_lower_mem): Declared.
	(pupa_upper_mem): Likewise.
	(pupa_gate_a20): Don't export, because turning off Gate A20 in a
	module is too dangerous.

	* include/pupa/loader.h (pupa_os_area_addr): Declared.
	(pupa_os_area_size): Likewise.
	(pupa_loader_set): Remove the first argument. Loader doesn't
	manage modules or initrd any longer.
	(pupa_loader_load_module): Removed.

	* conf/i386-pc.rmk (pkgdata_MODULES): Added linux.mod.
	(linux_mod_SOURCES): New variable.
	(linux_mod_CFLAGS): Likewise.
Update TODO.
2003-01-20  Yoshinori K. Okuji  <okuji@enbug.org>

	* include/pupa/normal.h: New file.
	* include/pupa/setjmp.h: Likewise.
	* include/pupa/i386/setjmp.h: Likewise.
	* normal/cmdline.c: Likewise.
	* normal/command.c: Likewise.
	* normal/main.c: Likewise.
	* normal/menu.c: Likewise.
	* normal/i386/setjmp.S: Likewise.

	* loader/i386/pc/linux.c (pupa_rescue_cmd_linux): Made global.
	(pupa_rescue_cmd_initrd): Likewise.

	* loader/i386/pc/chainloader.c (pupa_rescue_cmd_chainloader):
	Likewise.

	* kern/i386/pc/startup.S (translation_table): New variable.
	(translate_keycode): New function.
	(pupa_console_getkey): Call translate_keycode.

	* kern/rescue.c (attempt_normal_mode): New function.
	(pupa_enter_rescue_mode): Attempt to execute the normal mode. If
	it failed, print a message.

	* kern/mm.c (pupa_real_malloc): Print more information when a
	free magic is broken.
	(pupa_free): If the first free header is not free actually, set
	it to P.

	* kern/main.c (pupa_load_normal_mode): Just load the module
	"normal".
	(pupa_main): Don't print the message
	"Entering into rescue mode..." here.

	* include/pupa/i386/pc/loader.h (pupa_rescue_cmd_initrd):
	Declared.
	(pupa_rescue_cmd_initrd): Likewise.
	(pupa_rescue_cmd_initrd): Likewise.

	* include/pupa/symbol.h (FUNCTION): Specify the type.
	(VARIABLE): Likewise.

	* include/pupa/err.h (pupa_err_t): Added
	PUPA_ERR_UNKNOWN_COMMAND.

	* include/pupa/dl.h (pupa_dl_set_prefix): Exported.
	(pupa_dl_get_prefix): Likewise.

	* conf/i386-pc.rmk (pkgdata_MODULES): Added normal.mod.
	Added _chain.mod and _linux.mod instead of chain.mod and
	linux.mod.
	(chain_mod_SOURCES): Renamed to ...
	(_chain_mod_SOURCES): ... this.
	(chain_mod_CFLAGS): Renamed to ...
	(_chain_mod_CFLAGS): ... this.
	(linux_mod_SOURCES): Renamed to ...
	(_linux_mod_SOURCES): ... this.
	(linux_mod_CFLAGS): Renamed to ...
	(_linux_mod_CFLAGS): ... this.
	(normal_mod_SOURCES): New variable.
	(normal_mod_CFLAGS): Likewise.
	(normal_mod_ASFLAGS): Likewise.

2003-01-18  Yoshinori K. Okuji  <okuji@enbug.org>

	* kern/rescue.c (pupa_rescue_cmd_rmmod): Call pupa_dl_unload, if
	possible.

	* kern/dl.c (pupa_dl_ref): Refer dependending modules
	recursively.
	(pupa_dl_unref): Unrefer depending modules recursively.
	Don't call pupa_dl_unload implicitly, because PUPA can crash if
	a module is unloaded before one depending on that module is
	unloaded.
	(pupa_dl_unload): Unload depending modules explicitly,
	if possible.
2003-01-31  Yoshinori K. Okuji  <okuji@enbug.org>

	* kern/i386/pc/lzo1x.S: New file.

	* util/i386/pc/pupa-mkimage.c: Include lzo1x.h.
	(compress_kernel): New variable.
	(generate_image): Heavily modified to support compressing a
	large part of the core image.

	* util/misc.c (pupa_util_read_image): Fix a file descriptor
	leak.
	(pupa_util_load_image): New function.

	* kern/i386/pc/startup.S: Include pupa/machine/kernel.h.
	(pupa_compressed_size): New variable.
	(codestart): Enable Gate A20 here.
	Decompress the compressed part of the core image.
	Rearrange the code to put functions and variables which are
	required for initialization in the non-compressed part.
	Include lzo1x.S.

	* kern/i386/pc/init.c (pupa_machine_init): Don't enable Gate A20
	here.

	* include/pupa/util/misc.h (pupa_util_write_image): Declared.

	* include/pupa/i386/pc/kernel.h
	(PUPA_KERNEL_MACHINE_COMPRESSED_SIZE): New macro.
	(PUPA_KERNEL_MACHINE_INSTALL_DOS_PART): Increased by 4.
	(PUPA_KERNEL_MACHINE_INSTALL_BSD_PART): Likewise.
	(PUPA_KERNEL_MACHINE_PREFIX): Likewise.
	(PUPA_KERNEL_MACHINE_RAW_SIZE): New macro.

	* conf/i386-pc.rmk (pupa_mkimage_LDFLAGS): New variable.

	* genmk.rb (Image#rule): Put LDFLAGS at the end of a line.
	(Utility#rule): Likewise.

	* configure.ac: Check if LZO is available.
hello module and bug fix of util/resolve.c
2003-09-25  Yoshinori K. Okuji  <okuji@enbug.org>

	I forgot to check in these changes for a long time. This adds
	incomplete support for VGA console, and this is still very
	buggy. Also, a lot of consideration is required for I18N,
	UNICODE, and VGA font issues. Therefore, assume that this is
	such that "better than nothing".

	* font/manager.c: New file.
	* include/pupa/font.h: Likewise.
	* include/pupa/i386/pc/vga.h: Likewise.
	* term/i386/pc/vga.c: Likewise.
	* util/unifont2pff.rb: Likewise.

	* conf/i386-pc.rmk (kernel_img_HEADERS): Added machine/vga.h.
	(pkgdata_MODULES): Added vga.mod and font.mod.
	(vga_mod_SOURCES): New variables.
	(vga_mod_CFLAGS): Likewise.
	(font_mod_SOURCES): Likewise.
	(font_mod_CFLAGS): Likewise.

	* include/pupa/err.h (PUPA_ERR_BAD_FONT): New constant.

	* include/pupa/term.h: Include pupa/err.h.
	(struct pupa_term): Added init and fini.
	Changed the argument of putchar to pupa_uint32_t.

	* include/pupa/i386/pc/console.h: Include pupa/symbol.h.
	(pupa_console_real_putchar): New prototype.
	(pupa_console_putchar): Removed.
	(pupa_console_checkkey): Exported.
	(pupa_console_getkey): Likewise.

	* kern/misc.c (pupa_vsprintf): Add support for UNICODE
	characters.

	* kern/term.c (pupa_term_set_current): Rewritten.
	(pupa_putchar): Likewise.
	(pupa_putcode): New function.

	* kern/i386/pc/startup.S (pupa_console_putchar): Renamed to ...
	(pupa_console_real_putchar): ... this.
	(pupa_vga_set_mode): New function.
	(pupa_vga_get_font): Likewise.

	* normal/command.c: Include pupa/term.h.
	(terminal_command): New function.
	(pupa_command_init): Register the command "terminal".

	* normal/menu.c (DISP_LEFT): Changed to a UNICODE value.
	(DISP_UP): Likewise.
	(DISP_RIGHT): Likewise.
	(DISP_DOWN): Likewise.
	(DISP_HLINE): Likewise.
	(DISP_VLINE): Likewise.
	(DISP_UL): Likewise.
	(DISP_UR): Likewise.
	(DISP_LL): Likewise.
	(DISP_LR): Likewise.

	* term/i386/pc/console.c (pupa_console_putchar): New function.
2003-09-25  Yoshinori K. Okuji  <okuji@enbug.org>

	* genmk.rb (PModule#rule): Make sure to get only symbol names
	from the output of nm.
	Reported by Robert Millan <zeratul2@wanadoo.es>.
2003-10-27  Marco Gerards  <metgerards@student.han.nl>

	* README: In the pupa-mkimage example use _chain instead of chain
	and ext2 instead of fat.
	* TODO: Replace ext2fs with jfs as an example.  Add an item for
	adding journal playback for ext2fs.
	* conf/i386-pc.rmk (pupa_setup_SOURCES): Added fs/ext2.c.
	(pkgdata_MODULES): Added ext2.mod.
	(ext2_mod_SOURCES): New variable.
	(ext2_mod_CFLAGS): Likewise.
	* include/pupa/err.h (pupa_err_t): Added PUPA_ERR_SYMLINK_LOOP.
	* include/pupa/misc.h (pupa_strncpy): New prototype.
	(pupa_strcat): Likewise.
	(pupa_strncmp): Likewise.
	* kern/misc.c (pupa_strcat): Enable function.
	(pupa_strncpy): New function.
	(pupa_strncmp): Likewise.

	* kern/disk.c (pupa_disk_read): Set pupa_errno to PUPA_ERR_NONE
	when the read failed before retrying.
	* util/i386/pc/biosdisk.c (_LARGEFILE_SOURCE): Removed.
	(_FILE_OFFSET_BITS): Likewise.
	* configure.ac: Added AC_SYS_LARGEFILE.
2003-10-27  Marco Gerards  <metgerards@student.han.nl>

	* README: In the pupa-mkimage example use _chain instead of chain
	and ext2 instead of fat.
	* TODO: Replace ext2fs with jfs as an example.  Add an item for
	adding journal playback for ext2fs.
	* conf/i386-pc.rmk (pupa_setup_SOURCES): Added fs/ext2.c.
	(pkgdata_MODULES): Added ext2.mod.
	(ext2_mod_SOURCES): New variable.
	(ext2_mod_CFLAGS): Likewise.
	* include/pupa/err.h (pupa_err_t): Added PUPA_ERR_SYMLINK_LOOP.
	* include/pupa/misc.h (pupa_strncpy): New prototype.
	(pupa_strcat): Likewise.
	(pupa_strncmp): Likewise.
	* kern/misc.c (pupa_strcat): Enable function.
	(pupa_strncpy): New function.
	(pupa_strncmp): Likewise.
	* fs/ext2.c: New file.

	* kern/disk.c (pupa_disk_read): Set pupa_errno to PUPA_ERR_NONE
	when the read failed before retrying.
	* util/i386/pc/biosdisk.c (_LARGEFILE_SOURCE): Removed.
	(_FILE_OFFSET_BITS): Likewise.
	* configure.ac: Added AC_SYS_LARGEFILE.
2003-11-09  Jeroen Dekkers  <jeroen@dekkers.cx>

	* fs/ext2.c (struct pupa_ext2_inode): Declare struct datablocks
	as blocks.
	(pupa_ext2_get_file_block): Use blocks member.

	* fs/ext2.c (pupa_ext2_read_file): Only set skipfirst for the
	first block. Return -1 instead of pupa_errno on error.
2003-11-12  Marco Gerards  <metgerards@student.han.nl>

	* disk/i386/pc/biosdisk.c (pupa_biosdisk_open): Correctly check
	for available extensions.

	* include/pupa/i386/pc/time.h: New file.
	* kern/disk.c: Include <pupa/machine/time.h>.
	(PUPA_CACHE_TIMEOUT): New macro.
	(pupa_last_time): New variable.
	(pupa_disk_open): Flush the cache when there was a timeout.
	(pupa_disk_close): Reset the timer.
	* kern/i386/pc/startup.S (pupa_get_rtc): Renamed from
	pupa_currticks.
	* util/misc.c: Include <sys/times.h>
	(pupa_get_rtc): New function.