Bananymous
5ad7d7edb1
DynamicLoader: Fix TLS on 32 bit platform
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There were two problems with my previous implementation
- TLS was not allocated if nothing used it. There is a fallback
initialization in _init_libc, but this was not enough if one of the
init functions tried to access errno.
- __tls_get_addr was not resolved. If __tls_get_addr was called through
a plt entry, everything would just break :(
2025-06-06 16:27:07 +03:00
Bananymous
1c882ea361
DynamicLoader: Don't print TODOs on PT_GNU_ headers
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These should be either handled by kernel or just used as optimizations.
There is no requirement to handle them in dynamic loader
2025-06-01 13:48:03 +03:00
Bananymous
2cbfe70a28
DynamicLoader: Don't leak fds
2025-04-20 18:18:32 +03:00
Bananymous
ac90800c3c
Kernel/LibC/DynamicLoader: Implement thread local storage
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For some reason this does not work on 32 bit version, so it is disabled
on that platform. I'll have to look into it later to find the bug :)
2025-04-15 23:33:39 +03:00
Bananymous
254fd80088
DynamicLoader: Cleanup and prepare for TLS
2025-04-15 23:31:17 +03:00
Bananymous
36baf7b0af
Kernel/LibC/DynamicLoader: Update process start ABI
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We now use SysV abi for process startup
2025-04-15 23:05:52 +03:00
Bananymous
e6026cb0b8
DynamicLoader: Handle circular dependencies
2025-04-15 23:05:52 +03:00
Bananymous
4f49d60e4a
DynamicLoader/LibC: lazy malloc environ
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This allows DynamicLoader to just set the value of global environ symbol
without libc needing to malloc it at startup
2025-04-15 23:05:52 +03:00
Bananymous
c6cd185cb5
DynamicLoader: Fix copy relocations
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Weak symbols are now actually resolved to the same strong symbol between
shared objects and copy relocations now work!
2025-01-24 19:23:33 +02:00
Bananymous
3a465cb94f
DynamicLoader: Don't write to pltgot if it does not exist
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This makes `tcc` compile runnable executables
2024-12-04 21:11:43 +02:00
Bananymous
708a720d9d
Kernel: Remove SYS_OPEN
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This can be done with SYS_OPENAT with fd set to AT_FDCWD
2024-09-17 16:16:47 +03:00
Bananymous
4006a04817
DynamicLoader: Don't do file backed mapping over file bounds
2024-09-11 19:30:35 +03:00
Bananymous
19d16620a6
DynamicLoader: Don't do file backed mapping for filesz == 0
2024-09-05 14:50:05 +03:00
Bananymous
e8bcebfb8e
DynamicLoader: Use file backed mmap when possible
2024-09-05 13:59:39 +03:00
Bananymous
aa7e92b275
Userspace: Write a dynamic loader
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This allows running executing dynamically linked executables!
2024-09-05 12:58:21 +03:00
Bananymous