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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_align.h | ||
_bus.h | ||
_inttypes.h | ||
_limits.h | ||
_stdint.h | ||
_types.h | ||
asm.h | ||
atomic.h | ||
bus_dma_impl.h | ||
bus_dma.h | ||
bus.h | ||
clock.h | ||
counter.h | ||
cpu.h | ||
cpufunc.h | ||
db_machdep.h | ||
dump.h | ||
efi.h | ||
elf.h | ||
encoding.h | ||
endian.h | ||
exec.h | ||
float.h | ||
floatingpoint.h | ||
fpe.h | ||
frame.h | ||
ieeefp.h | ||
in_cksum.h | ||
intr.h | ||
kdb.h | ||
machdep.h | ||
md_var.h | ||
memdev.h | ||
metadata.h | ||
minidump.h | ||
ofw_machdep.h | ||
param.h | ||
pcb.h | ||
pcpu_aux.h | ||
pcpu.h | ||
pmap.h | ||
pmc_mdep.h | ||
proc.h | ||
procctl.h | ||
profile.h | ||
psl.h | ||
pte.h | ||
ptrace.h | ||
reg.h | ||
reloc.h | ||
resource.h | ||
riscvreg.h | ||
runq.h | ||
sbi.h | ||
setjmp.h | ||
sf_buf.h | ||
sigframe.h | ||
signal.h | ||
smp.h | ||
stack.h | ||
stdarg.h | ||
sysarch.h | ||
tls.h | ||
trap.h | ||
ucontext.h | ||
vdso.h | ||
vm.h | ||
vmparam.h |