source: rtems/c/PROBLEMS @ 6ae41fd

4.104.114.84.95
Last change on this file since 6ae41fd was 6ae41fd, checked in by Joel Sherrill <joel.sherrill@…>, on Sep 30, 1996 at 8:07:07 PM

updated for Release 3.6.0 to reflect status of posix threads.

  • Property mode set to 100644
File size: 3.3 KB
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1#
2#  $Id$
3#
4
5This is the list of outstanding problems in this release.
6
7+   The POSIX threads and real-time extensions are tested but this is
8    the first release with them included.  They are not enabled by
9    default.  The environment variable RTEMS_HAS_POSIX_API must be
10    set to "yes" and the C language macro RTEMS_POSIX_API must be defined
11    before this api is included in the build.
12
13+   The shell scripts runtest and difftest do not work properly when
14    testing "debug" executables.
15
16+   AMD 29k port is based on a non-GNU toolset.
17 
18+   The test spfatal is out of date and as a result will NOT execute
19    correctly.  The addition of POSIX and consequent ongoing initialization
20    reorganization makes it pointless to fix this until the POSIX support
21    is completely in place.
22
23+   The m68k family has become quite large and an understanding of the
24    compatibility of the peripherals on the various members of the 683xx
25    family would allow someone to designate some of the drivers submitted
26    for the gen683xx BSPs as useful on other members.
27
28+   The only supported i960 family member is the CA.  No support for the
29    floating point support found in other family members is present.
30    This also implies that RTEMS may "think" of something as generic
31    across the i960 family when in fact it is specific to the CA.
32    To make matters worse, the i960 target board owned by the RTEMS Project
33    is now broken and as a result even the i960CA is a "compile only" port.
34
35+   Some of the BSPs still define RAM_START and RAM_END in the bsp.h file.
36    It is better to define these in the linkcmds file.  It is also nice
37    to use the linkcmds file to place overlays for on-board hardware.
38
39+   The __read(), __write(), etc. routines should be renamed __rtems_read(),
40    etc. to avoid potential naming conflicts.  [NOTE: This is already
41    necessary under some versions of Linux with the unix port.]
42
43+   The __read() system call in all of the BSPs using single
44    character input/output needs to be smarter.  The following
45    issues need to be addressed:
46
47       + echoing of characters on input
48       + CR/NL echoing
49       + backspaces
50       + tabs
51
52+   UNIX port notes:
53
54       + sometimes a stray SIGALRM is reported as spfatal completes.
55
56       + There are conflicts between the names of native library routines
57         which MUST be used and those in the POSIX support.  This must
58         be addressed.
59
60+   Some of the tests may execute correctly and not produce the exact
61    ordering of lines in the screen file.  This appears to be a combination
62    of a number of factors including buffering, processor speed, IO
63    device overhead, and clock interrupt rate.
64
65+   The compiler configuration files (c/make/gcc-XYZ.cfg) are largely
66    the same when the different targets have the same CPU.  It would
67    be desirable to have a gcc-CPU.cfg or gcc-CPU_MODEL.cfg (e.g.
68    gcc-m68k.cfg or gcc-m68020.cfg) and have the file gcc-TARGET.cfg
69    include this and possibly override default settings.
70 
71+   The clock device drivers should really avoid doing the division
72    by 1000 in the clock tick ISR to convert microseconds into
73    milliseconds.  This only applies to clock drivers which generate
74    an ISR each millisecond and only call rtems_clock_tick every
75    so many ISRs.
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