Commit Graph

16 Commits

Author SHA1 Message Date
Bruce Evans
cacd1f6aa9 Cast to `const char *' instead of to c_caddr_t. This is part of
terminating c_caddr_t with extreme prejudice.  Here we depended
on the "opaque" type c_caddr_t being precisely `const char *'
to do unportable pointer arithmetic.
1999-01-29 09:04:27 +00:00
Matthew Dillon
8aef171243 Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile
1999-01-28 00:57:57 +00:00
Matthew Dillon
fe08c21a53 Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile.

    This commit includes significant work to proper handle const arguments
    for the DDB symbol routines.
1999-01-27 23:45:44 +00:00
Matthew Dillon
d254af07a1 Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile
1999-01-27 21:50:00 +00:00
Doug Rabson
149a155c3b Don't try to call SYSUNINIT functions if there was a link error.
Reviewed by: Peter Wemm <peter@netplex.com.au>
1999-01-25 08:42:24 +00:00
Peter Wemm
a13ddfb633 When loading something that has undefined symbols, it would be helpful to
know what they were..
1998-12-31 09:17:20 +00:00
Peter Wemm
caab6e909e Don't put aggregate structs 4K large on the kernel stack, especially when
we can recurse when loading dependencies and that the kstack is limited
to something like 6 or 7KB.  Having a single dependency caused an instant
double panic, and I stronly suspect some of the other strange "events"
that I have seen are possibly as a result of taking a couple of interrupts
with a large chunk of the stack already in use.

While here, fix a minor logic hiccup in a sanity check.
1998-11-06 15:16:07 +00:00
Peter Wemm
84e40f5627 The handle for the kernel is common. With this fix, ELF kernels can load
a.out kld modules, and a.out kernels can load ELF kld modules.
1998-11-04 15:20:58 +00:00
Poul-Henning Kamp
f5ef029e92 Nitpicking and dusting performed on a train. Removes trivial warnings
about unused variables, labels and other lint.
1998-10-25 17:44:59 +00:00
Peter Wemm
aa855a598d *gulp*. Jordan specifically OK'ed this..
This is the bulk of the support for doing kld modules.  Two linker_sets
were replaced by SYSINIT()'s.  VFS's and exec handlers are self registered.
kld is now a superset of lkm.  I have converted most of them, they will
follow as a seperate commit as samples.
This all still works as a static a.out kernel using LKM's.
1998-10-16 03:55:01 +00:00
Peter Wemm
434bf653d2 - bzero() after malloc() bug fix
- look up relocation symbol names in correct table bugfix.
- remove unused (initialized to 0) variable and conditional free() of it.
1998-10-15 17:16:24 +00:00
Peter Wemm
ca65d5c714 Load the full symbol tables if they are present. This means that ddb
and tracebacks have access to local symbols.  This is particularly
important for the Alpha.
1998-10-13 09:27:00 +00:00
Peter Wemm
2d636ab077 Only print kernel entry point during load.
Drastically quieten down the verbose load progress messages.  They were
more useful for debugging than anything, but are beyond a joke when loading
a few dozen modules.
Simplify the ELF extended symbol table load format.  Just take the main
symbol table and the string table that corresponds.  This is what we will
be getting local symbols from.  (needed for the alpha stack tracebacks).
Use the (optional) full symbol tables in lookups.  This means we have to
furhter distinguish between symbols that can come from the dynamic linking
table and the complete table.
The alpha boot code now needs to be adapted as ddb/db_elf.c cannot use
the simpler format.
I have not implemented loading the extended symbol tables from the syscall
interface yet, just for preloaded modules.
I am not sure about the symbol resolution.  I *think* it's possible that
a local symbol can be found in preference to a global, depending on the
search sequence and dependency tree.
1998-10-12 09:13:50 +00:00
Peter Wemm
de78ca7e63 Fully implement KLD and preloading.
- seperate unload for preloaded linker objects.
- Don't build a kernel object if running as an a.out kernel.
- extract the real kernel name rather than hardwiring "kernel" for kldstat.
  (sysctl kern.bootfile getst the full name via bootinfo)
- use real addresses on the kernel "module" rather than fictitious ones.
- preloaded module support
- search module path for file modules.
- symbols are checked to see if they are in the right containing file
  before using their indexes into string tables.  This is to help ddb
  since it only supplies a pointer to an opaque symbol and there is no
  telling which file/object/module/whatever it came from.
1998-10-09 23:55:31 +00:00
Doug Rabson
fe3db7c7c7 Implement dynamic loading for ELF. 1998-09-11 08:46:15 +00:00
Doug Rabson
a4f6773848 Add partial KLD support for ELF. The module loading is not written yet. 1998-08-24 08:25:26 +00:00