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1a62e9bc00
The header exports the following: - Definition of struct tcb. - Helpers to get/set the tcb for the current thread. - TLS_TCB_SIZE (size of TCB) - TLS_TCB_ALIGN (alignment of TCB) - TLS_VARIANT_I or TLS_VARIANT_II - TLS_DTV_OFFSET (bias of pointers in dtv[]) - TLS_TP_OFFSET (bias of "thread pointer" relative to TCB) Note that TLS_TP_OFFSET does not account for if the unbiased thread pointer points to the start of the TCB (arm and x86) or the end of the TCB (MIPS, PowerPC, and RISC-V). Note also that for amd64, the struct tcb does not include the unused tcb_spare field included in the current structure in libthr. libthr does not use this field, and the existing calls in libc and rtld that allocate a TCB for amd64 assume it is the size of 3 Elf_Addr's (and thus do not allocate room for tcb_spare). A <sys/_tls_variant_i.h> header is used by architectures using Variant I TLS which uses a common struct tcb. Reviewed by: kib (older version of x86/tls.h), jrtc27 Sponsored by: The University of Cambridge, Google Inc. Differential Revision: https://reviews.freebsd.org/D33351 |
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| .. | ||
| xen | ||
| _align.h | ||
| _inttypes.h | ||
| _limits.h | ||
| _stdint.h | ||
| _types.h | ||
| acpica_machdep.h | ||
| apicreg.h | ||
| apicvar.h | ||
| apm_bios.h | ||
| bus.h | ||
| bus_dma.h | ||
| busdma_impl.h | ||
| clock.h | ||
| cputypes.h | ||
| dump.h | ||
| elf.h | ||
| endian.h | ||
| fdt.h | ||
| float.h | ||
| fpu.h | ||
| frame.h | ||
| ifunc.h | ||
| init.h | ||
| intr_machdep.h | ||
| iommu.h | ||
| kvm.h | ||
| legacyvar.h | ||
| mca.h | ||
| metadata.h | ||
| mptable.h | ||
| ofw_machdep.h | ||
| pci_cfgreg.h | ||
| procctl.h | ||
| psl.h | ||
| ptrace.h | ||
| pvclock.h | ||
| reg.h | ||
| segments.h | ||
| setjmp.h | ||
| sigframe.h | ||
| signal.h | ||
| specialreg.h | ||
| stack.h | ||
| stdarg.h | ||
| sysarch.h | ||
| tls.h | ||
| trap.h | ||
| ucode.h | ||
| ucontext.h | ||
| vdso.h | ||
| vmware.h | ||
| x86_ieeefp.h | ||
| x86_smp.h | ||
| x86_var.h | ||