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CVS log for src/libexec/ld.elf_so/README.TLS

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Default branch: MAIN


Revision 1.5.2.1 / (download) - annotate - [select for diffs], Fri Aug 4 12:55:45 2023 UTC (7 months, 3 weeks ago) by martin
Branch: netbsd-9
Changes since 1.5: +3 -2 lines
Diff to previous 1.5 (colored) next main 1.6 (colored) to selected 1.4.44.1 (colored)

Pull up following revision(s), all via patch,
(requested by riastradh in ticket #1699):

	distrib/sets/lists/tests/shl.mi: revision 1.14
	distrib/sets/lists/tests/shl.mi: revision 1.15
	distrib/sets/lists/tests/shl.mi: revision 1.16
	tests/libexec/ld.elf_so/helper_def_static/h_def_static.c: revision 1.1
	tests/libexec/ld.elf_so/helper_def_dynamic/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_def_dynamic/Makefile: revision 1.2
	tests/libexec/ld.elf_so/helper_onlyuse_static/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_onlyuse_static/Makefile: revision 1.2
	libexec/ld.elf_so/arch/mips/mips_reloc.c: revision 1.75
	distrib/sets/lists/tests/mi: revision 1.1265
	libexec/ld.elf_so/arch/sh3/mdreloc.c: revision 1.36
	libexec/ld.elf_so/rtld.c: revision 1.214
	tests/libexec/ld.elf_so/helper_onlydef_static/Makefile: revision 1.1
	distrib/sets/lists/debug/mi: revision 1.400
	tests/libexec/ld.elf_so/helper_onlydef_static/Makefile: revision 1.2
	distrib/sets/lists/debug/mi: revision 1.401
	distrib/sets/lists/debug/mi: revision 1.402
	tests/libexec/ld.elf_so/helper_dso2/Makefile: revision 1.2
	distrib/sets/lists/debug/mi: revision 1.403
	tests/libexec/ld.elf_so/helper_symver_dso0/Makefile: revision 1.2
	libexec/ld.elf_so/arch/x86_64/mdreloc.c: revision 1.48
	distrib/sets/lists/debug/mi: revision 1.406
	tests/libexec/ld.elf_so/helper_use_dynamic/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_use_dynamic/Makefile: revision 1.2
	tests/libexec/ld.elf_so/helper_ifunc_dso/Makefile: revision 1.2
	libexec/ld.elf_so/arch/sparc64/mdreloc.c: revision 1.70
	libexec/ld.elf_so/arch/aarch64/mdreloc.c: revision 1.18
	tests/libexec/ld.elf_so/helper_abuse_dynamic/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_abuse_dynamic/Makefile: revision 1.2
	tests/libexec/ld.elf_so/Makefile: revision 1.13
	libexec/ld.elf_so/arch/arm/mdreloc.c: revision 1.46
	libexec/ld.elf_so/rtld.h: revision 1.146
	tests/libexec/ld.elf_so/Makefile: revision 1.14
	distrib/sets/lists/debug/shl.mi: revision 1.306
	tests/libexec/ld.elf_so/Makefile: revision 1.15
	tests/libexec/ld.elf_so/helper_abuse_static/Makefile: revision 1.1
	distrib/sets/lists/debug/shl.mi: revision 1.307
	tests/libexec/ld.elf_so/Makefile: revision 1.16
	tests/libexec/ld.elf_so/helper_abuse_static/Makefile: revision 1.2
	distrib/sets/lists/debug/shl.mi: revision 1.308
	tests/libexec/ld.elf_so/Makefile: revision 1.17
	distrib/sets/lists/debug/shl.mi: revision 1.309
	tests/libexec/ld.elf_so/Makefile: revision 1.18
	tests/libexec/ld.elf_so/Makefile: revision 1.19
	libexec/ld.elf_so/tls.c: revision 1.16
	libexec/ld.elf_so/tls.c: revision 1.17
	libexec/ld.elf_so/tls.c: revision 1.18
	libexec/ld.elf_so/tls.c: revision 1.19
	tests/libexec/ld.elf_so/helper_onlydef_static/h_onlydef_static.c: revision 1.1
	tests/libexec/ld.elf_so/helper_use_static/h_use_static.c: revision 1.1
	tests/libexec/ld.elf_so/helper_use_static/h_use_static.c: revision 1.2
	tests/libexec/ld.elf_so/helper_def_static/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_def_static/Makefile: revision 1.2
	libexec/ld.elf_so/arch/hppa/hppa_reloc.c: revision 1.50
	distrib/sets/lists/debug/shl.mi: revision 1.310
	libexec/ld.elf_so/README.TLS: revision 1.6
	distrib/sets/lists/debug/shl.mi: revision 1.311
	distrib/sets/lists/debug/shl.mi: revision 1.314
	tests/libexec/ld.elf_so/helper_dso3/Makefile: revision 1.2
	tests/libexec/ld.elf_so/helper_symver_dso1/Makefile: revision 1.4
	libexec/ld.elf_so/arch/powerpc/ppc_reloc.c: revision 1.63
	tests/libexec/ld.elf_so/helper_def_dynamic/h_def_dynamic.c: revision 1.1
	tests/libexec/ld.elf_so/helper_onlydef/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_onlydef/Makefile: revision 1.2
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.10
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.11
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.12
	libexec/ld.elf_so/map_object.c: revision 1.66
	tests/libexec/ld.elf_so/helper.mk: revision 1.1
	libexec/ld.elf_so/arch/sparc/mdreloc.c: revision 1.57
	libexec/ld.elf_so/map_object.c: revision 1.67
	tests/libexec/ld.elf_so/helper_onlydef/h_onlydef.c: revision 1.1
	tests/libexec/ld.elf_so/helper_symver_dso2/Makefile: revision 1.4
	tests/libexec/ld.elf_so/helper_use_static/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_use_static/Makefile: revision 1.2
	tests/libexec/ld.elf_so/helper_use_static/Makefile: revision 1.3
	tests/libexec/ld.elf_so/helper_use_dynamic/h_use_dynamic.c: revision 1.1
	tests/libexec/ld.elf_so/helper_abuse_static/h_abuse_static.c: revision 1.1
	libexec/ld.elf_so/arch/riscv/mdreloc.c: revision 1.9
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.1
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.2
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.3
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.4
	tests/libexec/ld.elf_so/helper_onlyctor_dynamic/Makefile: revision 1.1
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.5
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.6
	libexec/ld.elf_so/arch/m68k/mdreloc.c: revision 1.34
	tests/libexec/ld.elf_so/helper_onlyctor_dynamic/Makefile: revision 1.2
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.7
	libexec/ld.elf_so/arch/i386/mdreloc.c: revision 1.42
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.8
	libexec/ld.elf_so/arch/i386/mdreloc.c: revision 1.43
	libexec/ld.elf_so/arch/or1k/mdreloc.c: revision 1.4
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.9
	tests/libexec/ld.elf_so/helper_onlyuse_dynamic/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_onlyuse_dynamic/Makefile: revision 1.2
	tests/libexec/ld.elf_so/helper_abuse_dynamic/h_abuse_dynamic.c: revision 1.1
	tests/libexec/ld.elf_so/helper_onlyctor_dynamic/h_onlyctor_dynamic.c: revision 1.1
	tests/libexec/ld.elf_so/helper_onlyuse_static/h_onlyuse_static.c: revision 1.1
	tests/libexec/ld.elf_so/helper_onlyuse_dynamic/h_onlyuse_dynamic.c: revision 1.1
	tests/libexec/ld.elf_so/helper_dso1/Makefile: revision 1.2
	distrib/sets/lists/tests/shl.mi: revision 1.12
	distrib/sets/lists/tests/shl.mi: revision 1.13
	libexec/ld.elf_so/arch/alpha/alpha_reloc.c: revision 1.44

ld.elf_so: New test for extern initial-exec TLS, PR toolchain/50277.

ld.elf_so: Fix extern TLS test to match PR toolchain/50277.
Now it's actually testing the problem.
ld.elf_so: Nix inadvertently committed private test program.
ld.elf_so: Fix set lists for MKDEBUG=yes builds with t_tls_extern.

ld.elf_so: Sprinkle tls debug messages.

ld.elf_so: Make tls alloc debug messages more detailed and greppable.

ld.elf_so: Test variations on PR toolchain/50277.

ld.elf_so: Test extern dynamic TLS too.

ld.elf_so: Factor out logic in TLS tests to make writing more easier.
No functional change intended.

ld.elf_so: Test TLS abuse of static def, dynamic use and vice versa.

ld.elf_so: Shorter test names.
No functional non-cosmetic change intended.

ld.elf_so: Separately test eager and lazy resolution of def tls ptr.
eager: before loading use library
lazy: after loading use library

Add recent ld.elf_so test helpers debug info
ld.elf_so: Add new files to debug/shl.mi.

ld.elf_so: tls_extern dynamic_defabuse_eager must xfail differently.
If a symbol has already been resolved as dynamic TLS, any library
that tries to use it as static TLS cannot be dlopened.

ld.elf_so: Test another edge case of mismatched TLS models.
One library defines a symbol and _doesn't_ use it, so it has no
indication of whether the symbol is for static TLS or dynamic TLS,
and then two other libraries use it in different ways.

ld.elf_so: Test dynamic-then-static abuse via ctor.

ld.elf_so: Fix missing tab in debug/shl.mi in last change.

Fix interactions of initial-exec TLS model and dlopen

(1) If an initial-exec relocation was used for a non-local symbol
(i.e. the definition of the symbol is in a different DSO), the
computation of the static TLS offset used the wrong DSO.

This would effectively mean the wrong address was computed
(PR toolchain/50277, PR pkg/57445).
Fix this by forcing the computation of the correct DSO (the one defining
the symbol).
This code uses __UNCONST to avoid the vast interface changes for this
special case.

(2) If symbols from a DSO loaded via dlopen are used with both
global-dynamic/local-dynamic and initial-exec relocations AND
a initial-exec relocation was resolved first in a thread, a split brain
situation could exist where the dynamic relocations would use one memory
block (separate allocation) and the initial-exec relocations the static
per-thread TLS space.

(3) If the initial-exec relocation in (2) is seen after any thread has
already used a GD/LD allocation, bail out. Since IE relocations are used
only in the GOT, this will prevent the dlopen. This is a bit more
aggressive than necessary, but a full blown reference counting doesn't
seem to be justified.
Avoid using uninitialized variable "symnum" when building with DEBUG
enabled by borrowing the rdbg_symname() macro from arch/x86_64.
ld.elf_so: Sprinkle more debug messages on dlopen and error.

PR pkg/57445

Fix MKDEBUGLIB build by adding these installed files to the debug
set list.

One could argue that these files are not of any use, so why install
them?  I don't have a good argument either way, and this is (for
now) a simple work-around for PR bin/57455   Please feel free to
commit a different fix to avoid installing these files at all.

Fix markup of libh_ MKDEBUGLIB=yes only files

TLS variant I archs need to fudge the offset by the size of the TCB.
tests/libexec/ld.elf_so: Fix helper library makefiles.
1. Consolidate logic into a single helper.mk to reduce duplication.
2. Set NO* variables, not MK* variables which are reserved for user.
3. Avoid eager X!= in favour of lazy ${X:sh}.
4. Mark _g.a set list entries obsolete.  Never should've been built!
PR misc/57462

Revision 1.5.10.1 / (download) - annotate - [select for diffs], Tue Aug 1 16:34:56 2023 UTC (7 months, 4 weeks ago) by martin
Branch: netbsd-10
CVS Tags: netbsd-10-0-RELEASE, netbsd-10-0-RC6, netbsd-10-0-RC5, netbsd-10-0-RC4, netbsd-10-0-RC3, netbsd-10-0-RC2, netbsd-10-0-RC1
Changes since 1.5: +3 -2 lines
Diff to previous 1.5 (colored) next main 1.6 (colored) to selected 1.4.44.1 (colored)

Pull up following revision(s) (requested by riastradh in ticket #297):

	distrib/sets/lists/tests/shl.mi: revision 1.14
	distrib/sets/lists/tests/shl.mi: revision 1.15
	distrib/sets/lists/tests/shl.mi: revision 1.16
	tests/libexec/ld.elf_so/helper_def_static/h_def_static.c: revision 1.1
	tests/libexec/ld.elf_so/helper_def_dynamic/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_def_dynamic/Makefile: revision 1.2
	tests/libexec/ld.elf_so/helper_onlyuse_static/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_onlyuse_static/Makefile: revision 1.2
	libexec/ld.elf_so/arch/mips/mips_reloc.c: revision 1.75
	distrib/sets/lists/tests/mi: revision 1.1265
	libexec/ld.elf_so/arch/sh3/mdreloc.c: revision 1.36
	libexec/ld.elf_so/rtld.c: revision 1.214
	tests/libexec/ld.elf_so/helper_onlydef_static/Makefile: revision 1.1
	distrib/sets/lists/debug/mi: revision 1.400
	tests/libexec/ld.elf_so/helper_onlydef_static/Makefile: revision 1.2
	distrib/sets/lists/debug/mi: revision 1.401
	distrib/sets/lists/debug/mi: revision 1.402
	tests/libexec/ld.elf_so/helper_dso2/Makefile: revision 1.2
	distrib/sets/lists/debug/mi: revision 1.403
	tests/libexec/ld.elf_so/helper_symver_dso0/Makefile: revision 1.2
	libexec/ld.elf_so/arch/x86_64/mdreloc.c: revision 1.48
	distrib/sets/lists/debug/mi: revision 1.406
	tests/libexec/ld.elf_so/helper_use_dynamic/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_use_dynamic/Makefile: revision 1.2
	tests/libexec/ld.elf_so/helper_ifunc_dso/Makefile: revision 1.2
	libexec/ld.elf_so/arch/sparc64/mdreloc.c: revision 1.70
	libexec/ld.elf_so/arch/aarch64/mdreloc.c: revision 1.18
	tests/libexec/ld.elf_so/helper_abuse_dynamic/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_abuse_dynamic/Makefile: revision 1.2
	tests/libexec/ld.elf_so/Makefile: revision 1.13
	libexec/ld.elf_so/arch/arm/mdreloc.c: revision 1.46
	libexec/ld.elf_so/rtld.h: revision 1.146
	tests/libexec/ld.elf_so/Makefile: revision 1.14
	distrib/sets/lists/debug/shl.mi: revision 1.306
	tests/libexec/ld.elf_so/Makefile: revision 1.15
	tests/libexec/ld.elf_so/helper_abuse_static/Makefile: revision 1.1
	distrib/sets/lists/debug/shl.mi: revision 1.307
	tests/libexec/ld.elf_so/Makefile: revision 1.16
	tests/libexec/ld.elf_so/helper_abuse_static/Makefile: revision 1.2
	distrib/sets/lists/debug/shl.mi: revision 1.308
	tests/libexec/ld.elf_so/Makefile: revision 1.17
	distrib/sets/lists/debug/shl.mi: revision 1.309
	tests/libexec/ld.elf_so/Makefile: revision 1.18
	tests/libexec/ld.elf_so/Makefile: revision 1.19
	libexec/ld.elf_so/tls.c: revision 1.16
	libexec/ld.elf_so/tls.c: revision 1.17
	libexec/ld.elf_so/tls.c: revision 1.18
	libexec/ld.elf_so/tls.c: revision 1.19
	tests/libexec/ld.elf_so/helper_onlydef_static/h_onlydef_static.c: revision 1.1
	tests/libexec/ld.elf_so/helper_use_static/h_use_static.c: revision 1.1
	tests/libexec/ld.elf_so/helper_use_static/h_use_static.c: revision 1.2
	tests/libexec/ld.elf_so/helper_def_static/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_def_static/Makefile: revision 1.2
	libexec/ld.elf_so/arch/hppa/hppa_reloc.c: revision 1.50
	distrib/sets/lists/debug/shl.mi: revision 1.310
	libexec/ld.elf_so/README.TLS: revision 1.6
	distrib/sets/lists/debug/shl.mi: revision 1.311
	distrib/sets/lists/debug/shl.mi: revision 1.314
	tests/libexec/ld.elf_so/helper_dso3/Makefile: revision 1.2
	tests/libexec/ld.elf_so/helper_symver_dso1/Makefile: revision 1.4
	libexec/ld.elf_so/arch/powerpc/ppc_reloc.c: revision 1.63
	tests/libexec/ld.elf_so/helper_def_dynamic/h_def_dynamic.c: revision 1.1
	tests/libexec/ld.elf_so/helper_onlydef/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_onlydef/Makefile: revision 1.2
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.10
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.11
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.12
	libexec/ld.elf_so/map_object.c: revision 1.66
	tests/libexec/ld.elf_so/helper.mk: revision 1.1
	libexec/ld.elf_so/arch/sparc/mdreloc.c: revision 1.57
	libexec/ld.elf_so/map_object.c: revision 1.67
	tests/libexec/ld.elf_so/helper_onlydef/h_onlydef.c: revision 1.1
	tests/libexec/ld.elf_so/helper_symver_dso2/Makefile: revision 1.4
	tests/libexec/ld.elf_so/helper_use_static/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_use_static/Makefile: revision 1.2
	tests/libexec/ld.elf_so/helper_use_static/Makefile: revision 1.3
	tests/libexec/ld.elf_so/helper_use_dynamic/h_use_dynamic.c: revision 1.1
	tests/libexec/ld.elf_so/helper_abuse_static/h_abuse_static.c: revision 1.1
	libexec/ld.elf_so/arch/riscv/mdreloc.c: revision 1.9
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.1
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.2
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.3
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.4
	tests/libexec/ld.elf_so/helper_onlyctor_dynamic/Makefile: revision 1.1
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.5
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.6
	libexec/ld.elf_so/arch/m68k/mdreloc.c: revision 1.34
	tests/libexec/ld.elf_so/helper_onlyctor_dynamic/Makefile: revision 1.2
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.7
	libexec/ld.elf_so/arch/i386/mdreloc.c: revision 1.42
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.8
	libexec/ld.elf_so/arch/i386/mdreloc.c: revision 1.43
	libexec/ld.elf_so/arch/or1k/mdreloc.c: revision 1.4
	tests/libexec/ld.elf_so/t_tls_extern.c: revision 1.9
	tests/libexec/ld.elf_so/helper_onlyuse_dynamic/Makefile: revision 1.1
	tests/libexec/ld.elf_so/helper_onlyuse_dynamic/Makefile: revision 1.2
	tests/libexec/ld.elf_so/helper_abuse_dynamic/h_abuse_dynamic.c: revision 1.1
	tests/libexec/ld.elf_so/helper_onlyctor_dynamic/h_onlyctor_dynamic.c: revision 1.1
	tests/libexec/ld.elf_so/helper_onlyuse_static/h_onlyuse_static.c: revision 1.1
	tests/libexec/ld.elf_so/helper_onlyuse_dynamic/h_onlyuse_dynamic.c: revision 1.1
	tests/libexec/ld.elf_so/helper_dso1/Makefile: revision 1.2
	distrib/sets/lists/tests/shl.mi: revision 1.12
	distrib/sets/lists/tests/shl.mi: revision 1.13
	libexec/ld.elf_so/arch/alpha/alpha_reloc.c: revision 1.44
	(all via patch)

ld.elf_so: New test for extern initial-exec TLS, PR toolchain/50277.

ld.elf_so: Fix extern TLS test to match PR toolchain/50277.
Now it's actually testing the problem.
ld.elf_so: Nix inadvertently committed private test program.
ld.elf_so: Fix set lists for MKDEBUG=yes builds with t_tls_extern.

ld.elf_so: Sprinkle tls debug messages.

ld.elf_so: Make tls alloc debug messages more detailed and greppable.

ld.elf_so: Test variations on PR toolchain/50277.

ld.elf_so: Test extern dynamic TLS too.

ld.elf_so: Factor out logic in TLS tests to make writing more easier.
No functional change intended.

ld.elf_so: Test TLS abuse of static def, dynamic use and vice versa.

ld.elf_so: Shorter test names.
No functional non-cosmetic change intended.

ld.elf_so: Separately test eager and lazy resolution of def tls ptr.
eager: before loading use library
lazy: after loading use library

Add recent ld.elf_so test helpers debug info
ld.elf_so: Add new files to debug/shl.mi.

ld.elf_so: tls_extern dynamic_defabuse_eager must xfail differently.
If a symbol has already been resolved as dynamic TLS, any library
that tries to use it as static TLS cannot be dlopened.

ld.elf_so: Test another edge case of mismatched TLS models.
One library defines a symbol and _doesn't_ use it, so it has no
indication of whether the symbol is for static TLS or dynamic TLS,
and then two other libraries use it in different ways.

ld.elf_so: Test dynamic-then-static abuse via ctor.

ld.elf_so: Fix missing tab in debug/shl.mi in last change.

Fix interactions of initial-exec TLS model and dlopen
(1) If an initial-exec relocation was used for a non-local symbol
(i.e. the definition of the symbol is in a different DSO), the
computation of the static TLS offset used the wrong DSO.
This would effectively mean the wrong address was computed
(PR toolchain/50277, PR pkg/57445).
Fix this by forcing the computation of the correct DSO (the one defining
the symbol).
This code uses __UNCONST to avoid the vast interface changes for this
special case.
(2) If symbols from a DSO loaded via dlopen are used with both
global-dynamic/local-dynamic and initial-exec relocations AND
a initial-exec relocation was resolved first in a thread, a split brain
situation could exist where the dynamic relocations would use one memory
block (separate allocation) and the initial-exec relocations the static
per-thread TLS space.
(3) If the initial-exec relocation in (2) is seen after any thread has
already used a GD/LD allocation, bail out. Since IE relocations are used
only in the GOT, this will prevent the dlopen. This is a bit more
aggressive than necessary, but a full blown reference counting doesn't
seem to be justified.
Avoid using uninitialized variable "symnum" when building with DEBUG
enabled by borrowing the rdbg_symname() macro from arch/x86_64.
ld.elf_so: Sprinkle more debug messages on dlopen and error.
PR pkg/57445
Fix MKDEBUGLIB build by adding these installed files to the debug
set list.
XXX
One could argue that these files are not of any use, so why install
them?  I don't have a good argument either way, and this is (for
now) a simple work-around for PR bin/57455   Please feel free to
commit a different fix to avoid installing these files at all.
Fix markup of libh_ MKDEBUGLIB=yes only files
TLS variant I archs need to fudge the offset by the size of the TCB.
tests/libexec/ld.elf_so: Fix helper library makefiles.
1. Consolidate logic into a single helper.mk to reduce duplication.
2. Set NO* variables, not MK* variables which are reserved for user.
3. Avoid eager X!= in favour of lazy ${X:sh}.
4. Mark _g.a set list entries obsolete.  Never should've been built!
PR misc/57462

Revision 1.6 / (download) - annotate - [select for diffs], Sun Jun 4 01:24:56 2023 UTC (9 months, 3 weeks ago) by joerg
Branch: MAIN
CVS Tags: HEAD
Changes since 1.5: +3 -2 lines
Diff to previous 1.5 (colored) to selected 1.4.44.1 (colored)

Fix interactions of initial-exec TLS model and dlopen

(1) If an initial-exec relocation was used for a non-local symbol
(i.e. the definition of the symbol is in a different DSO), the
computation of the static TLS offset used the wrong DSO.
This would effectively mean the wrong address was computed
(PR toolchain/50277, PR pkg/57445).

Fix this by forcing the computation of the correct DSO (the one defining
the symbol).

This code uses __UNCONST to avoid the vast interface changes for this
special case.

(2) If symbols from a DSO loaded via dlopen are used with both
global-dynamic/local-dynamic and initial-exec relocations AND
a initial-exec relocation was resolved first in a thread, a split brain
situation could exist where the dynamic relocations would use one memory
block (separate allocation) and the initial-exec relocations the static
per-thread TLS space.

(3) If the initial-exec relocation in (2) is seen after any thread has
already used a GD/LD allocation, bail out. Since IE relocations are used
only in the GOT, this will prevent the dlopen. This is a bit more
aggressive than necessary, but a full blown reference counting doesn't
seem to be justified.

Revision 1.4.44.1 / (download) - annotate - [selected], Mon Jun 10 22:05:29 2019 UTC (4 years, 9 months ago) by christos
Branch: phil-wifi
Changes since 1.4: +2 -2 lines
Diff to previous 1.4 (colored) next main 1.5 (colored)

Sync with HEAD

Revision 1.4.42.1 / (download) - annotate - [select for diffs], Wed Dec 26 14:01:28 2018 UTC (5 years, 3 months ago) by pgoyette
Branch: pgoyette-compat
CVS Tags: pgoyette-compat-merge-20190127
Changes since 1.4: +2 -2 lines
Diff to previous 1.4 (colored) next main 1.5 (colored) to selected 1.4.44.1 (colored)

Sync with HEAD, resolve a few conflicts

Revision 1.5 / (download) - annotate - [select for diffs], Sat Dec 1 13:01:57 2018 UTC (5 years, 3 months ago) by skrll
Branch: MAIN
CVS Tags: phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, phil-wifi-20190609, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, netbsd-9-base, netbsd-9-3-RELEASE, netbsd-9-2-RELEASE, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-10-base, is-mlppp-base, is-mlppp, cjep_sun2x-base1, cjep_sun2x-base, cjep_sun2x, cjep_staticlib_x-base1, cjep_staticlib_x-base, cjep_staticlib_x
Branch point for: netbsd-9, netbsd-10
Changes since 1.4: +2 -2 lines
Diff to previous 1.4 (colored) to selected 1.4.44.1 (colored)

Fix typos

Revision 1.4 / (download) - annotate - [select for diffs], Thu Mar 10 17:38:30 2011 UTC (13 years ago) by joerg
Branch: MAIN
CVS Tags: yamt-pagecache-tag8, yamt-pagecache-base9, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, yamt-pagecache, tls-maxphys-base, tls-maxphys, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-base, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7, netbsd-6-base, netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-6, matt-nb8-mediatek-base, matt-nb8-mediatek, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, localcount-20160914, cherry-xenmp-base, cherry-xenmp, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan, agc-symver-base, agc-symver
Branch point for: phil-wifi, pgoyette-compat
Changes since 1.3: +9 -3 lines
Diff to previous 1.3 (colored) to selected 1.4.44.1 (colored)

Add some clarifications

Revision 1.3 / (download) - annotate - [select for diffs], Thu Mar 10 17:22:17 2011 UTC (13 years ago) by joerg
Branch: MAIN
Changes since 1.2: +4 -3 lines
Diff to previous 1.2 (colored) to selected 1.4.44.1 (colored)

Add source reference for _lwp_makecontext and
__HAVE___LWP_GETPRIVATE_FAST. Fix enumeration.

Revision 1.2 / (download) - annotate - [select for diffs], Thu Mar 10 14:27:31 2011 UTC (13 years ago) by joerg
Branch: MAIN
Changes since 1.1: +7 -28 lines
Diff to previous 1.1 (colored) to selected 1.4.44.1 (colored)

Fix prototype for __tls_get_addr. Add a generic implementation of it
using __tls_get_addr. Update TLS notes.

Revision 1.1 / (download) - annotate - [select for diffs], Wed Mar 9 23:10:07 2011 UTC (13 years ago) by joerg
Branch: MAIN
Diff to selected 1.4.44.1 (colored)

Add TLS support infrastructure. For dynamic binaries, ld.elf_so exports
_rtld_tls_allocate and _rtld_tls_free. libpthread uses this functions to
setup the thread private area of all new threads. ld.elf_so is
responsible for setting up the private area for the initial thread.
Similar functions are called from _libc_init for static binaries, using
dl_iterate_phdr to access the ELF Program Header.

Add test cases to exercise the different TLS storage models. Test cases
are compiled and installed on all platforms, but are skipped on
platforms not marked for TLS support.

This material is based upon work partially supported by
The NetBSD Foundation under a contract with Joerg Sonnenberger.

It is inspired by the TLS support in FreeBSD by Doug Rabson and the
clean ups of the DragonFly port of the original FreeBSD modifications.

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