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* hurd: Don't migrate reply port into __init1_tcbheadSergey Bugaev2023-04-211-5/+6
| | | | | | | | | | | | | | | Properly differentiate between setting up the real TLS with TLS_INIT_TP, and setting up the early TLS (__init1_tcbhead) in static builds. In the latter case, don't yet migrate the reply port into the TCB, and don't yet set __libc_tls_initialized to 1. This also lets us move the __init1_desc assignment inside _hurd_tls_init (). Fixes cd019ddd892e182277fadd6aedccc57fa3923c8d "hurd: Don't leak __hurd_reply_port0" Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
* hurd: Only check for TLS initialization inside rtld or in static buildsSergey Bugaev2023-04-142-6/+31
| | | | | | | | | | | | | | | | | | | | | When glibc is built as a shared library, TLS is always initialized by the call of TLS_INIT_TP () macro made inside the dynamic loader, prior to running the main program (see dl-call_tls_init_tp.h). We can take advantage of this: we know for sure that __LIBC_NO_TLS () will evaluate to 0 in all other cases, so let the compiler know that explicitly too. Also, only define _hurd_tls_init () and TLS_INIT_TP () under the same conditions (either !SHARED or inside rtld), to statically assert that this is the case. Other than a microoptimization, this also helps with avoiding awkward sharing of the __libc_tls_initialized variable between ld.so and libc.so that we would have to do otherwise -- we know for sure that no sharing is required, simply because __libc_tls_initialized would always be set to true inside libc.so. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-25-bugaevc@gmail.com>
* Revert "hurd: Only check for TLS initialization inside rtld or in static builds"Samuel Thibault2023-04-112-31/+6
| | | | | | | | This reverts commit b37899d34d2190ef4b454283188f22519f096048. Apparently we load libc.so (and thus start using its functions) before calling TLS_INIT_TP, so libc.so functions should not actually assume that TLS is always set up.
* hurd: Don't leak __hurd_reply_port0Sergey Bugaev2023-04-111-1/+8
| | | | | | | | | | | | | Previously, once we set up TLS, we would implicitly switch from using __hurd_reply_port0 to reply_port inside the TCB, leaving the former unused. But we never deallocated it, so it got leaked. Instead, migrate the port into the new TCB's reply_port slot. This avoids both the port leak and an extra syscall to create a new reply port for the TCB. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-28-bugaevc@gmail.com>
* hurd: Only check for TLS initialization inside rtld or in static buildsSergey Bugaev2023-04-102-7/+33
| | | | | | | | | | | | | | | | | | | | | When glibc is built as a shared library, TLS is always initialized by the call of TLS_INIT_TP () macro made inside the dynamic loader, prior to running the main program (see dl-call_tls_init_tp.h). We can take advantage of this: we know for sure that __LIBC_NO_TLS () will evaluate to 0 in all other cases, so let the compiler know that explicitly too. Also, only define _hurd_tls_init () and TLS_INIT_TP () under the same conditions (either !SHARED or inside rtld), to statically assert that this is the case. Other than a microoptimization, this also helps with avoiding awkward sharing of the __libc_tls_initialized variable between ld.so and libc.so that we would have to do otherwise -- we know for sure that no sharing is required, simply because __libc_tls_initialized would always be set to true inside libc.so. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-25-bugaevc@gmail.com>
* hurd: Implement x86_64/intr-msg.hSergey Bugaev2023-04-101-0/+119
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-18-bugaevc@gmail.com>
* hurd: Add sys/ucontext.h and sigcontext.h for x86_64Sergey Bugaev2023-04-102-0/+169
| | | | | | | This is based on the Linux port's version, but laid out to match Mach's struct i386_thread_state, much like the i386 version does. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
* hurd: Add vm_param.h for x86_64Sergey Bugaev2023-04-031-0/+24
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-30-bugaevc@gmail.com>
* hurd: Implement _hurd_longjmp_thread_state for x86_64Sergey Bugaev2023-04-031-0/+41
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-29-bugaevc@gmail.com>
* htl: Implement thread_set_pcsptp for x86_64Sergey Bugaev2023-04-031-0/+73
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-23-bugaevc@gmail.com>
* hurd: Implement TLS for x86_64Sergey Bugaev2023-02-271-0/+215
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230221211932.296459-4-bugaevc@gmail.com>
* hurd, htl: Add some x86_64-specific codeSergey Bugaev2023-02-122-0/+49
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230212111044.610942-12-bugaevc@gmail.com>
* hurd: Set up the basic tree for x86_64-gnuSergey Bugaev2023-02-122-0/+5
And move pt-setup.c to the generic x86 tree. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230212111044.610942-11-bugaevc@gmail.com>
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