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Kernel/LibC: Replace SYS_{GET,SET}_TLS with SYS_{SET,GET}_{FS,GS}BASE

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This allows userspace to use both registers
This commit is contained in:
Bananymous
2025-11-10 21:48:38 +02:00
parent 7a68ce7e94
commit 89c0ff1a9d
17 changed files with 165 additions and 46 deletions
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16
userspace/libraries/LibC/unistd.cpp
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@@ -34,7 +34,13 @@ extern "C" void _init_libc(char** environ, init_funcs_t init_funcs, init_funcs_t
if (::environ == nullptr)
::environ = environ;
if (uthread* self = reinterpret_cast<uthread*>(syscall(SYS_GET_TLS)))
#if defined(__x86_64__)
if (uthread* self = reinterpret_cast<uthread*>(syscall(SYS_GET_FSBASE)))
#elif defined(__i686__)
if (uthread* self = reinterpret_cast<uthread*>(syscall(SYS_GET_GSBASE)))
#else
#error
#endif
{
self->cleanup_stack = nullptr;
self->id = syscall(SYS_PTHREAD_SELF);
@@ -61,7 +67,13 @@ extern "C" void _init_libc(char** environ, init_funcs_t init_funcs, init_funcs_t
};
uthread.dtv[0] = 0;
syscall(SYS_SET_TLS, &uthread);
#if defined(__x86_64__)
syscall(SYS_SET_FSBASE, &uthread);
#elif defined(__i686__)
syscall(SYS_SET_GSBASE, &uthread);
#else
#error
#endif
}
// call global constructors