OS_Develop/FreeDOS
OS_Develop/FreeDOS
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Author SHA1 Message Date
Mondgestein
a2ad348ed8 Function 30h (Get DOS Version): Get DOS version from PSP 
- Upon creation, initialize the PSP version field
    to os_setver_minor / os_setver_major.
  - When calling Function 30h, return the contents
    of the current PSP's version field to the caller.
 2019-12-02 12:06:22 -05:00
Lino Mastrodomenico
61499ae6aa Add the full text of the license (GPL v2). (#8) 
* Move the text of the GPLv2 to the top-level directory

This to make it easier to find, it also allows to be autodetectable by github and other automated tools.  Note: this is not a license change, the FreeDOS kernel is already released under the GPL v2.
 2019-12-01 21:08:56 -05:00
lpproj
6be00f83c1 Fix func 36h (Get free disk space) fails in some redirectors: 
- David Maxey's PHANTOM (Undocumented DOS 2nd edition)
  - Novell CD-ROM extension NWCDEX (DR DOS 7.03)
 2019-11-08 18:41:50 -05:00
C. Masloch
61647299c6 dosfns.c: only copy to current_ldt if pointer is valid 2019-11-08 18:19:11 -05:00
C. Masloch
6fbb1d0043 inthndlr.c: in Int21.43FF, dispatch DosMkRmdir on CL not AH 2019-11-08 18:19:11 -05:00
Tee-Kiah Chia
6f9648672e EXEC (func 0x4b): fix: do not crash if exMinAlloc == 0xffff 
Some ancient NE programs set exMinAlloc to 0xffff to signify
that they should not be run as normal MZ programs at all:

00000000  4d 5a 40 00 01 00 00 00  04 00 ff ff ff ff 00 00
00000010  00 00 00 00 00 00 00 00  40 00 00 00 00 00 00 00
00000020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00000030  00 00 00 00 00 00 00 00  00 00 00 00 40 00 00 00
00000040  4e 45 04 00 9b 00 07 00  00 00 00 00 06 40 02 00
...

The kernel should reject these programs, rather than try to
run them (and crash the system).
 2019-11-05 12:49:41 -05:00
Kenneth J Davis
9d5abfe25a
Merge pull request #2 from PerditionC/master 
sync
 2018-10-20 20:58:47 -04:00
Kenneth J Davis
80c1184294
Merge pull request #31 from FDOS/master 
sync
 2018-10-20 20:54:34 -04:00
Andrew Bird
d5b5505013 FCB: Rename return value lost 
Two variables named 'result' were defined, at the outer level a
UBYTE to hold the function return value and the inner a COUNT to
hold returns from 'truename()'. The overall function return value
was always FCB_SUCCESS due to shadowing, however removing the
inner variable definition as a fix does not work due to sign
issues and intermixing of the variable uses, so rename the inner
variable.

Tested this patch using FDPP platform
1/ Simple rename of file with conditions for success (ok)
2/ Simple rename of file with conditions for failure - source missing (ok)
3/ Simple rename of file with conditions for failure - target exists (ok)

Fixes #16
 2018-10-20 20:45:24 -04:00
Bart Oldeman
8c45af38c7 Implement suggested instead of minimal fix for ludivmul. 
See https://sourceforge.net/p/freedos/bugs/106/
(Gerd Grosse)
 2018-10-20 19:47:09 -04:00
Bart Oldeman
5e31e7fe58 Fix division for some large numbers such as 0xFFFF01FF/0x10101FF 
See also https://sourceforge.net/p/freedos/bugs/106/
(Gerd Grosse)
 2018-10-20 19:47:09 -04:00
Bart Oldeman
c4d18100e7 Fix comments (Gerd Grosse, https://sourceforge.net/p/freedos/bugs/106/) 2018-10-20 19:47:09 -04:00
Bart Oldeman
761582ec0d ia16-elf-gcc: eliminate DOSDATA, DOSTEXT and C use of TGROUP. 
Now that it understands relocations those are no longer necessary.
 2018-10-20 19:47:09 -04:00
Bart Oldeman
204c2d5ba9 ia16-elf-gcc: eliminate _EnableA20 and _DisableA20 wrappers. 2018-10-20 19:47:09 -04:00
Bart Oldeman
384c5d302f ia16-elf-gcc: eliminate wrapper for init_call_p_0 and make it "noreturn". 2018-10-20 19:47:09 -04:00
Bart Oldeman
112f0fea42 ia16-elf-gcc port: use CDECL = __attribute__((cdecl)) instead of varargs. 2018-10-20 19:47:09 -04:00
Tee-Kiah Chia
656afa7873 ia16-elf-gcc: remove need for far function wrappers 2018-10-20 19:47:09 -04:00
Tee-Kiah Chia
a4e7d1bf08 ia16-elf-gcc: remove some DOSDATA(.) & DOSTEXT(.) uses; replace 
with actual __far declarations which ia16-elf-gcc now supports
 2018-10-20 19:47:09 -04:00
Tee-Kiah Chia
41cb3a9dc1 ia16-elf-gcc: use special .msdos_mz_{hdr, reloc} section names 
recognized by my recent (post-20 Mar 2018) binutils-ia16 patches
 2018-10-20 19:47:09 -04:00
Tee-Kiah Chia
ab6a76d049 Fix minor issues in diagnostic messages in utils/exeflat.c 2018-10-20 19:47:09 -04:00
Tee-Kiah Chia
2b96ed38d9 ia16-elf-gcc: use ia16-elf-objcopy instead of host objcopy 
to process the ia16-elf object files
 2018-10-20 19:47:09 -04:00
Tee-Kiah Chia
955cfc6df1 ia16-elf-gcc: update docs.: pkgs. for Ubuntu Trusty now avail. 2018-10-20 19:47:09 -04:00
Andrew Bird
7ec9c456ea FCB: Rename return value lost 
Two variables named 'result' were defined, at the outer level a
UBYTE to hold the function return value and the inner a COUNT to
hold returns from 'truename()'. The overall function return value
was always FCB_SUCCESS due to shadowing, however removing the
inner variable definition as a fix does not work due to sign
issues and intermixing of the variable uses, so rename the inner
variable.

Tested this patch using FDPP platform
1/ Simple rename of file with conditions for success (ok)
2/ Simple rename of file with conditions for failure - source missing (ok)
3/ Simple rename of file with conditions for failure - target exists (ok)

Fixes #16
 2018-10-18 07:08:30 -04:00
Bart Oldeman
e6d427834f Implement suggested instead of minimal fix for ludivmul. 
See https://sourceforge.net/p/freedos/bugs/106/
(Gerd Grosse)
 2018-09-06 10:30:04 -04:00
Bart Oldeman
eda671d079 Fix division for some large numbers such as 0xFFFF01FF/0x10101FF 
See also https://sourceforge.net/p/freedos/bugs/106/
(Gerd Grosse)
 2018-09-06 10:12:41 -04:00
Bart Oldeman
fa36d8aa25 Fix comments (Gerd Grosse, https://sourceforge.net/p/freedos/bugs/106/) 2018-09-06 10:07:00 -04:00
Bart Oldeman
5ff361314c ia16-elf-gcc: eliminate DOSDATA, DOSTEXT and C use of TGROUP. 
Now that it understands relocations those are no longer necessary.
 2018-07-12 14:27:03 -04:00
Bart Oldeman
1bb9496c48 ia16-elf-gcc: eliminate _EnableA20 and _DisableA20 wrappers. 2018-07-12 12:14:47 -04:00
Bart Oldeman
25071a8df2 ia16-elf-gcc: eliminate wrapper for init_call_p_0 and make it "noreturn". 2018-07-12 11:47:41 -04:00
Bart Oldeman
36e31078ce Merge branch 'ia16-elf-gcc' into fdos_master 2018-07-12 11:01:38 -04:00
Bart Oldeman
8ee8135d4f ia16-elf-gcc port: use CDECL = __attribute__((cdecl)) instead of varargs. 2018-07-12 10:56:26 -04:00
bartoldeman
0954613e2a
Merge pull request #1 from bartoldeman/ia16-elf-gcc 
Ia16 elf gcc
 2018-07-11 16:14:29 -04:00
bartoldeman
fefd37f0dd
Merge branch 'master' into ia16-elf-gcc 2018-07-11 16:14:09 -04:00
bartoldeman
ca7fb8e71b
Merge pull request #4 from tkchia/ia16-elf-gcc-post20180708 
Simplify ia16-elf-gcc port, by taking advantage of recently-added gcc features
 2018-07-11 16:06:59 -04:00
Tee-Kiah Chia
49d1939ed7 ia16-elf-gcc: remove need for far function wrappers 2018-07-08 18:10:18 +08:00
Tee-Kiah Chia
fd770f50df ia16-elf-gcc: remove some DOSDATA(.) & DOSTEXT(.) uses; replace 
with actual __far declarations which ia16-elf-gcc now supports
 2018-04-21 10:36:42 +08:00
Tee-Kiah Chia
fdbea16132 ia16-elf-gcc: use special .msdos_mz_{hdr, reloc} section names 
recognized by my recent (post-20 Mar 2018) binutils-ia16 patches
 2018-04-21 00:13:05 +08:00
bartoldeman
fe57c89061
Merge pull request #3 from tkchia/ia16-elf-gcc 
Minor fixes for mkfiles/gcc.mak and utils/exeflat.c
 2018-04-07 15:42:10 -04:00
Tee-Kiah Chia
2111b543c1 Fix minor issues in diagnostic messages in utils/exeflat.c 2018-04-07 22:22:12 +08:00
Tee-Kiah Chia
7eec989c22 ia16-elf-gcc: use ia16-elf-objcopy instead of host objcopy 
to process the ia16-elf object files
 2018-04-07 22:20:37 +08:00
bartoldeman
a954b21261
Merge pull request #2 from tkchia/ia16-elf-gcc 
ia16-elf-gcc: update documentation to mention (new) ia16-elf-gcc packages for Ubuntu Trusty
 2018-03-05 12:19:55 -05:00
Tee-Kiah Chia
f2bd7233e9 ia16-elf-gcc: update docs.: pkgs. for Ubuntu Trusty now avail. 2018-03-04 23:43:56 +08:00
Bart Oldeman
9c39f76155 Fix ret in LSHLU/LSHRU long shift macros, since they already pop of stack. 2018-02-22 18:44:49 -05:00
Tee-Kiah Chia
7160ff10c2 ia16-elf-gcc: precompiled Ubuntu pkgs. as a way to get toolchain 2018-02-22 18:44:49 -05:00
Bart Oldeman
a3a3c2cfe9 Fix ret in LSHLU/LSHRU long shift macros, since they already pop of stack. 2018-02-22 12:51:20 -05:00
Tee-Kiah Chia
0128621e1f ia16-elf-gcc: precompiled Ubuntu pkgs. as a way to get toolchain 2018-02-22 12:51:20 -05:00
Bart Oldeman
e83ebed451 Add build instructions for ia16-elf-gcc. 2018-01-11 17:50:31 -05:00
Bart Oldeman
a70f31bf61 ia16-elf-gcc: enable and fix basic warnings; don't do strict ptr aliasing for now 2018-01-11 17:50:31 -05:00
Bart Oldeman
ce8e4fd091 Use static for GCC, which makes the kernel smaller (automatic inlining) 2018-01-11 17:50:31 -05:00
Bart Oldeman
d7a05ab6cd For GCC builds use GNU make instead of wmake throughout. 
This eliminates all build-dependencies on Open Watcom.
 2018-01-11 17:50:31 -05:00