John Baldwin 1a62e9bc00 Add <machine/tls.h> header to hold MD constants and helpers for TLS. ... 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		2021-12-09 13:17:13 -08:00
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pc
xen
_align.h
_bus.h
_inttypes.h
_limits.h
_stdint.h
_types.h
acpica_machdep.h
apm_bios.h
asan.h
asm.h
asmacros.h
atomic.h
bus_dma.h
bus.h
clock.h	x86: Deduplicate clock.h	2021-12-06 10:39:08 -05:00
counter.h
cpu.h
cpufunc.h
cputypes.h
csan.h
db_machdep.h
dump.h
efi.h
elf.h
endian.h
exec.h
fdt.h
float.h
floatingpoint.h
fpu.h
frame.h
gdb_machdep.h
ieeefp.h
in_cksum.h
intr_machdep.h
iodev.h
iommu.h
kdb.h
limits.h
md_var.h
memdev.h
metadata.h
minidump.h
mp_watchdog.h
msan.h
nexusvar.h
npx.h
ofw_machdep.h
param.h
pcb.h
pci_cfgreg.h
pcpu_aux.h
pcpu.h
pmap.h
pmc_mdep.h
ppireg.h
proc.h	Make struct syscall_args machine independent	2021-12-08 18:45:33 +00:00
procctl.h
profile.h
psl.h
ptrace.h
pvclock.h
reg.h
reloc.h
resource.h
runq.h
segments.h
setjmp.h
sf_buf.h
sgx.h
sgxreg.h
sigframe.h
signal.h
smp.h
specialreg.h
stack.h
stdarg.h
sysarch.h
timerreg.h
tls.h	Add <machine/tls.h> header to hold MD constants and helpers for TLS.	2021-12-09 13:17:13 -08:00
trap.h
tss.h
ucontext.h
vdso.h
vm.h
vmm_dev.h
vmm_instruction_emul.h
vmm_snapshot.h
vmm.h
vmparam.h