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26 Commits

Author SHA1 Message Date
Gregory Nutt
20a86dfc1b binfmt/ and sched/group: Re-architect the way that loadable ELF or NXFLAT modules are unloaded. Memory resources must be recovered when the task loaded into memory exits. The originmal implementatino used the death-of-child SIGCHLD signal to perform the unload. There are several problems with this: It is overly complex, it requires that the parent task stay resident while the loaded task runs, and it has fatal logic flaws in the protected and kernel model builds because the user signal handler attempts to run in the kernel address space. This commit corrects with using a mindlessly simply BINFMT callback when the task exits. 2018-08-05 08:09:54 -06:00
Gregory Nutt
8b4b61f140 fs/cromfs: Fix a error in reading partial compressed blocks. The LZF decompressor does not support that operation. Instead we have to decompress full block into a temporary buffer and copy out the parts that we need. To compensate for the performance hit, a caching mechanism was added so that we do not have to read the same block repeatedly. Unrelated: Also updates some README files. 2018-03-24 11:30:35 -06:00
Gregory Nutt
bc2cded397 Squashed commit of the following: 
binfmt: Fix some compilation issues introduced in previous changes.  Verfied with the STM32F4-Discovery ELF configuration.

    binfmt:  schedule_unload() is an internal OS function and must not alter the errno variable.

    binfmt:  unload_module() is an internal OS function and must not alter the errno variable.

    binfmt:  load_module() is an internal OS function and must not alter the errno variable.

    binfmt:  exec_module() is an internal OS function and must not alter the errno variable.
 2017-10-02 15:30:55 -06:00
Gregory Nutt
a1469a3e95 Add CONFIG_DEBUG_ERROR. Change names of *dbg() * *err() 2016-06-11 15:50:49 -06:00
Gregory Nutt
fc3540cffe Replace all occurrences of vdbg with vinfo 2016-06-11 11:59:51 -06:00
Gregory Nutt
4a7fb2cbc1 binfmt: Cosmetic -- rename binfmt_internal.h to binfmt.h. Move related argument copy logic into new file, binfmt_copyargv.c 2015-11-14 07:29:47 -06:00
Gregory Nutt
7c119ba787 Binfmt no longer depends on a fixed sized argv[] list 2014-11-12 18:31:32 -06:00
Gregory Nutt
62880f60c4 In kernel mode, we have to duplicate the callers argv[] buffer when exec'ing new tasks. When the argv[] buffer is needed, the caller's address environment will not longer be in place 2014-09-14 14:10:23 -06:00
Gregory Nutt
76957599a2 When allocating a stack for a new process using the user-sapce allocator, need to select the address environment first 2014-09-09 17:32:32 -06:00
Gregory Nutt
9ad7dae4c1 Rename kufree to kumm_free for consistency with other naming 2014-08-31 16:15:11 -06:00
Gregory Nutt
2cb9d5c7b0 Add addrenv.h; First cut at Cortex-A address environment structures; Add configuration options to setup address enviornment 2014-08-24 09:57:53 -06:00
Gregory Nutt
1624e2fbcf Change CONFIG_ADDRENV to CONFIG_ARCH_ADDRENV; change how it is selected -- the architecure must first declare support 2014-08-24 06:42:11 -06:00
Gregory Nutt
e18844de32 P-code BINFMT: Add logic to pass information from the binfmt logic to the P-code interpreter. This includes some extension to the binfmt interfaces. 2014-05-08 16:58:10 -06:00
Gregory Nutt
f8024cf409 More trailing whilespace removal 2014-04-13 16:22:22 -06:00
patacongo
1c52dce216 More changes for a kernel-mode allocator (more to be done) 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5724 42af7a65-404d-4744-a932-0658087f49c3
 2013-03-09 21:12:20 +00:00
patacongo
2545f5c1a9 Verify PATH variable in apps/examples/elf 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5445 42af7a65-404d-4744-a932-0658087f49c3
 2012-12-19 22:18:30 +00:00
patacongo
d6f761430c Some minor fixes for CONFIG_ADDRENV=y 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5444 42af7a65-404d-4744-a932-0658087f49c3
 2012-12-19 21:16:03 +00:00
patacongo
a160442b78 Incorporate address environment interfaces in binfmt/ logic 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5443 42af7a65-404d-4744-a932-0658087f49c3
 2012-12-19 17:54:26 +00:00
patacongo
948b57f2af C++ static destructors work with ELF load too now 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5274 42af7a65-404d-4744-a932-0658087f49c3
 2012-10-29 20:43:35 +00:00
patacongo
ef6dcd6f90 C++ constructors work with ELF load now 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5273 42af7a65-404d-4744-a932-0658087f49c3
 2012-10-29 19:32:05 +00:00
patacongo
b8f437ef4b Move binfmt.h, nxflat.h, elf.h, and symtab.h to include/nuttx/binfmt/ 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5252 42af7a65-404d-4744-a932-0658087f49c3
 2012-10-24 20:19:44 +00:00
patacongo
7a9457bb07 Email address change in nuttx/ 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5145 42af7a65-404d-4744-a932-0658087f49c3
 2012-09-13 18:32:24 +00:00
patacongo
99b0163fba Changing NuttX fixed size type names to C99 standard names -- things will be broken for awhile 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2349 42af7a65-404d-4744-a932-0658087f49c3
 2009-12-15 17:06:59 +00:00
patacongo
2ea9e257cd Straighten out conditional compilation 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1896 42af7a65-404d-4744-a932-0658087f49c3
 2009-06-17 21:15:31 +00:00
patacongo
4a1221f35d Add exec_module 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1895 42af7a65-404d-4744-a932-0658087f49c3
 2009-06-17 20:25:27 +00:00
patacongo
8ce89fe17d Add basic module management logic 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1894 42af7a65-404d-4744-a932-0658087f49c3
 2009-06-17 18:45:48 +00:00