| Commit message (Collapse) | Author | Age | Files | Lines |
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We need to save/restore bound registers and add a BND prefix before
branches in _dl_runtime_profile so that bound registers for pointer
pass and return are preserved when LD_AUDIT is used.
[BZ #18134]
* sysdeps/i386/configure.ac: Set HAVE_MPX_SUPPORT.
* sysdeps/i386/configure: Regenerated.
* sysdeps/i386/dl-trampoline.S (PRESERVE_BND_REGS_PREFIX): New.
(_dl_runtime_profile): Save and restore Intel MPX return bound
registers when calling _dl_call_pltexit. Add
PRESERVE_BND_REGS_PREFIX before return.
* sysdeps/i386/link-defines.sym (LRV_BND0_OFFSET): New.
(LRV_BND1_OFFSET): Likewise.
* sysdeps/x86/bits/link.h (La_i86_retval): Add lrv_bnd0 and
lrv_bnd1.
* sysdeps/x86_64/dl-trampoline.S (_dl_runtime_profile): Fix
typo in bndmov encoding.
* sysdeps/x86_64/dl-trampoline.h: Properly save and restore
Intel MPX bound registers. Add PRESERVE_BND_REGS_PREFIX before
branch instructions to preserve bounds.
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Define macros for fields in La_i86_regs and La_i86_retval and use them
in dl-trampoline.S, instead of hardcoded values.
* sysdeps/i386/Makefile (gen-as-const-headers)[elf]: Add
link-defines.sym.
* sysdeps/i386/dl-trampoline.S: Include <link-defines.h>.
(_dl_runtime_profile): Use LONG_DOUBLE_SIZE, LRV_SIZE,
LRV_EAX_OFFSET, LRV_EDX_OFFSET, LRV_ST0_OFFSET, LRV_ST1_OFFSET
and LR_SIZE.
* sysdeps/i386/link-defines.sym: New file.
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_dl_runtime_profile function has wrong cfi directive when
rewinding stack back for the pltexit path.
Only 8 bytes - 2 'pop edx' instructions from the pltentry-only
code should be rewinded back.
With attached patch, I'm able to rewind stack correctly
throught the rtld code from audit library callback.
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* sysdeps/i386/dl-trampoline.S (_dl_runtime_profile): Fix a few
more little bugs in creating the stack frame when pltexit has to
be called.
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* sysdeps/i386/dl-trampoline.S (_dl_runtime_profile): Correctly
align for function call in case pltexit has to be called later.
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implicit atomic operation when storing function pointer.
(_dl_runtime_profile): Likewise.
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names not numbers in cfi_*.
ADDR_LIMIT_3GB, PER_LINUX_32BIT, PER_LINUX32_3GB): Add.
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consider_profiling always to zero. Don't count of compiler to
remove unreached if block.
* sysdeps/x86_64/dl-trampoline.S [PROF] (_dl_runtime_profile):
Don't compile.
* sysdeps/i386/dl-trampoline.S [PROF] (_dl_runtime_profile): Likewise.
* sysdeps/ia64/dl-trampoline.S [PROF] (_dl_runtime_profile): Likewise.
* sysdeps/s390/s390-64/dl-trampoline.S [PROF] (_dl_runtime_profile):
Likewise.
* sysdeps/s390/s390-32/dl-trampoline.S [PROF] (_dl_runtime_profile):
Likewise.
* sysdeps/powerpc/powerpc64/dl-trampoline.S [PROF]
(_dl_profile_resolve): Likewise.
* sysdeps/powerpc/powerpc32/dl-trampoline.S [PROF]
(_dl_profile_resolve): Likewise.
* gmon/Makefile: Add rules to build and run tst-profile-static.
* gmon/tst-profile-static.c: New file.
* Makeconfig (+link-static): Allow passing program-specific flags.
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* sysdeps/generic/libc-start.c: Don't register program destructor here.
* dlfcn/Makefile: Add rules to build dlfcn.c.
(LDFLAGS-dl.so): Removed.
* dlfcn/dlclose.c: _dl_close is now in ld.so, use function pointer
table.
* dlfcn/dlmopen.c: Likewise for _dl_open.
* dlfcn/dlopen.c: Likewise.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-libc.c: Likewise for _dl_open and _dl_close.
* elf/Makefile (routines): Remove dl-open and dl-close.
(dl-routines): Add dl-open, dl-close, and dl-trampoline.
Add rules to build and run tst-audit1.
* elf/tst-audit1.c: New file.
* elf/tst-auditmod1.c: New file.
* elf/Versions [libc]: Remove _dl_open and _dl_close.
* elf/dl-close.c: Change for use inside ld.so instead of libc.so.
* elf/dl-open.c: Likewise.
* elf/dl-debug.c (_dl_debug_initialize): Allow reinitialization,
signaled by nonzero parameter.
* elf/dl-init.c: Fix use of r_state.
* elf/dl-load.c: Likewise.
* elf/dl-close.c: Add auditing checkpoints.
* elf/dl-open.c: Likewise.
* elf/dl-fini.c: Likewise.
* elf/dl-load.c: Likewise.
* elf/dl-sym.c: Likewise.
* sysdeps/generic/libc-start.c: Likewise.
* elf/dl-object.c: Allocate memory for auditing information.
* elf/dl-reloc.c: Remove RESOLV. We now always need the map.
Correctly initialize slotinfo.
* elf/dynamic-link.h: Adjust after removal of RESOLV.
* sysdeps/hppa/dl-lookupcfg.h: Likewise.
* sysdeps/ia64/dl-lookupcfg.h: Likewise.
* sysdeps/powerpc/powerpc64/dl-lookupcfg.h: Removed.
* elf/dl-runtime.c (_dl_fixup): Little cleanup.
(_dl_profile_fixup): New parameters to point to register struct and
variable for frame size.
Add auditing checkpoints.
(_dl_call_pltexit): New function.
Don't define trampoline code here.
* elf/rtld.c: Recognize LD_AUDIT. Load modules on startup.
Remove all the functions from _rtld_global_ro which only _dl_open
and _dl_close needed.
Add auditing checkpoints.
* elf/link.h: Define symbols for auditing interfaces.
* include/link.h: Likewise.
* include/dlfcn.h: Define __RTLD_AUDIT.
Remove prototypes for _dl_open and _dl_close.
Adjust access to argc and argv in libdl.
* dlfcn/dlfcn.c: New file.
* sysdeps/generic/dl-lookupcfg.h: Remove all content now that RESOLVE
is gone.
* sysdeps/generic/ldsodefs.h: Add definitions for auditing interfaces.
* sysdeps/generic/unsecvars.h: Add LD_AUDIT.
* sysdeps/i386/dl-machine.h: Remove trampoline code here.
Adjust for removal of RESOLVE.
* sysdeps/x86_64/dl-machine.h: Likewise.
* sysdeps/generic/dl-trampoline.c: New file.
* sysdeps/i386/dl-trampoline.c: New file.
* sysdeps/x86_64/dl-trampoline.c: New file.
* sysdeps/generic/dl-tls.c: Cleanups. Fixup for dtv_t change.
Fix updating of DTV.
* sysdeps/generic/libc-tls.c: Likewise.
* sysdeps/arm/bits/link.h: Renamed to ...
* sysdeps/arm/buts/linkmap.h: ...this.
* sysdeps/generic/bits/link.h: Renamed to...
* sysdeps/generic/bits/linkmap.h: ...this.
* sysdeps/hppa/bits/link.h: Renamed to...
* sysdeps/hppa/bits/linkmap.h: ...this.
* sysdeps/hppa/i386/link.h: Renamed to...
* sysdeps/hppa/i386/linkmap.h: ...this.
* sysdeps/hppa/ia64/link.h: Renamed to...
* sysdeps/hppa/ia64/linkmap.h: ...this.
* sysdeps/hppa/s390/link.h: Renamed to...
* sysdeps/hppa/s390/linkmap.h: ...this.
* sysdeps/hppa/sh/link.h: Renamed to...
* sysdeps/hppa/sh/linkmap.h: ...this.
* sysdeps/hppa/x86_64/link.h: Renamed to...
* sysdeps/hppa/x86_64/linkmap.h: ...this.
2005-01-06 Ulrich Drepper <drepper@redhat.com>
* allocatestack.c (init_one_static_tls): Adjust initialization of DTV
entry for static tls deallocation fix.
* sysdeps/alpha/tls.h (dtv_t): Change pointer type to be struct which
also contains information whether the memory pointed to is static
TLS or not.
* sysdeps/i386/tls.h: Likewise.
* sysdeps/ia64/tls.h: Likewise.
* sysdeps/powerpc/tls.h: Likewise.
* sysdeps/s390/tls.h: Likewise.
* sysdeps/sh/tls.h: Likewise.
* sysdeps/sparc/tls.h: Likewise.
* sysdeps/x86_64/tls.h: Likewise.
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