crt0 uses a helper function in a MD src/libexec/ld.so .h file (rather than
reproducing the relevant defines and code in a different place) to perform
minor relocations. If things go very wrong, it would call _dl_exit() --
a locally defined crt0 function which is syscall exit(2). We don't need
to call exit(2) for this obscure case which doesn't happen and provides no
debugging information. An 'abort' is going to provide better information.
So let's change the function name to _dso_abort() and make it a single
illegal instruction.
ok guenther

Nothing depends on archdep.h pulling in other #includes anymore,
so delete the #includes and hide the RELOC_* functions that are
only used by lib/csu behind "#ifdef RCRT0"

these are the ones I tested; kettenis@ was on board with the concept

Delete all the no-op RELOC_GOT() macros and their uses.
Annotate RELOC_DYN() on non-hppa as only used in lib/csu.
Delete some inconsistent comments, adjust whitespace, and reorder
mips64's archdep.h so that the ld.so/*/archdep.h files look
(almost) the same.

ok visa@ kettenis@

Prefer the size-independent ELF identifiers over the size-specific ones.
Strip superfluous parens from return statements while here.

Done programatically with two perl invocations

idea ok kettenis@ drahn@
ok visa@

Use <elf.h> instead of <elf_abi.h>

ok jasper@, jca@, deraadt@

On fatal errors, kill ourselves with thrkill(0,9,NULL) instead of
simply exiting, via helper functions _dl_die(), _dl_diedie(), and
_dl_oom().

prompted by a complaint from jsing@
ok jsing@ deraadt@

_dl_exit() is __dead, so it should return void.
Move _dl_mmap() and _dl_mquery() inlines from archdep.h to syscall.h and
remove pointless casts and unnecessary parens.

ok kettenis@

Delete ancient macros and unnecessary #includes

ok deraadt@

Remove dependency on __got_{start,end} symbols and look at PT_GNU_RELRO
instead. Result in a few more pages that aren't writable on some platforms
(such as hppa). Based on an initial diff from guenther@.

Thanks to deraadt@ for testing.

ok guenther@

fix types for mmap wrappers. A few whitespace cleanups snuck in.
ok guenther

Simplify the relocation code for the ld.so bootstrap and static pie: track
just the dynamic tags are needed instead of reusing the generic elf_object_t
structure.

testing and feedback from miod@
ok kettenis@

Expand Elf_Rel relocations to include DT_JMPREL. Inspect DT_PLTREL value
to determine if DT_JMPREL relocations are REL or RELA and conditionally
perform DT_JMPREL in either REL or RELA as needed (idea from kettenis@).
Remove unneeded i386 RELA implementation. i386 static pie working now.

okay kettenis@

Self-relocation code for i386.

Fix handling of hppa RELOC_IPLT relocations during 'bootstrap relocation'.

ok miod@, deraadt@, jsing@

Change define used to deal with PLT protection, use postive logic not negative.
ok mickey@

Check for RTLD_TEXT_PLT define instead of an architecture specific check.

pefo 3/4 licence cleanups

Change mquery() function call signature to be the same a mmap(). It
needs the prot/flags info and passing the addresses via arg/return allows
it to be traced via ktrace better than an in/out paramter.
This adds a new mquery syscall and renames the old one to omquery.
New kernel _MUST_ be built, booted, and 'make includes' before building
ld.so with this change.

backout mquery change, something broke when not combined with a different diff.

change mquery() function call signature to be the same a mmap(). It
needs the prot/flags info and passing the addresses via arg/return allows
it to be traced via ktrace better than an in/out paramter.
This adds a new mquery syscall and renames the old one to omquery.
New kernel _MUST_ be built and installed before building ld.so with this change.
ok millert@ tedu@

mquery support, currently for i386 only.

After relocation is completed, remove write protection from GOT/PLT in ld.so.

Some small fixes in MI code for mips backport. A new reloc md function,
RELOC_GOT, was added to handle mips got bootstrap reloc.

Also remove workaround used on previous versions of binutils for mips.

Support for i386 ELF. Not an indication that the change is going to be made,
just so that these files are maintained in the tree.

Nothing depends on archdep.h pulling in other #includes anymore,
so delete the #includes and hide the RELOC_* functions that are
only used by lib/csu behind "#ifdef RCRT0"

these are the ones I tested; kettenis@ was on board with the concept

Delete all the no-op RELOC_GOT() macros and their uses.
Annotate RELOC_DYN() on non-hppa as only used in lib/csu.
Delete some inconsistent comments, adjust whitespace, and reorder
mips64's archdep.h so that the ld.so/*/archdep.h files look
(almost) the same.

ok visa@ kettenis@

Prefer the size-independent ELF identifiers over the size-specific ones.
Strip superfluous parens from return statements while here.

Done programatically with two perl invocations

idea ok kettenis@ drahn@
ok visa@

Use <elf.h> instead of <elf_abi.h>

ok jasper@, jca@, deraadt@

On fatal errors, kill ourselves with thrkill(0,9,NULL) instead of
simply exiting, via helper functions _dl_die(), _dl_diedie(), and
_dl_oom().

prompted by a complaint from jsing@
ok jsing@ deraadt@

_dl_exit() is __dead, so it should return void.
Move _dl_mmap() and _dl_mquery() inlines from archdep.h to syscall.h and
remove pointless casts and unnecessary parens.

ok kettenis@

Delete ancient macros and unnecessary #includes

ok deraadt@

Remove dependency on __got_{start,end} symbols and look at PT_GNU_RELRO
instead. Result in a few more pages that aren't writable on some platforms
(such as hppa). Based on an initial diff from guenther@.

Thanks to deraadt@ for testing.

ok guenther@

fix types for mmap wrappers. A few whitespace cleanups snuck in.
ok guenther

Simplify the relocation code for the ld.so bootstrap and static pie: track
just the dynamic tags are needed instead of reusing the generic elf_object_t
structure.

testing and feedback from miod@
ok kettenis@

Expand Elf_Rel relocations to include DT_JMPREL. Inspect DT_PLTREL value
to determine if DT_JMPREL relocations are REL or RELA and conditionally
perform DT_JMPREL in either REL or RELA as needed (idea from kettenis@).
Remove unneeded i386 RELA implementation. i386 static pie working now.

okay kettenis@

Self-relocation code for i386.

Fix handling of hppa RELOC_IPLT relocations during 'bootstrap relocation'.

ok miod@, deraadt@, jsing@

Change define used to deal with PLT protection, use postive logic not negative.
ok mickey@

Check for RTLD_TEXT_PLT define instead of an architecture specific check.

pefo 3/4 licence cleanups

Change mquery() function call signature to be the same a mmap(). It
needs the prot/flags info and passing the addresses via arg/return allows
it to be traced via ktrace better than an in/out paramter.
This adds a new mquery syscall and renames the old one to omquery.
New kernel _MUST_ be built, booted, and 'make includes' before building
ld.so with this change.

backout mquery change, something broke when not combined with a different diff.

change mquery() function call signature to be the same a mmap(). It
needs the prot/flags info and passing the addresses via arg/return allows
it to be traced via ktrace better than an in/out paramter.
This adds a new mquery syscall and renames the old one to omquery.
New kernel _MUST_ be built and installed before building ld.so with this change.
ok millert@ tedu@

mquery support, currently for i386 only.

After relocation is completed, remove write protection from GOT/PLT in ld.so.

Some small fixes in MI code for mips backport. A new reloc md function,
RELOC_GOT, was added to handle mips got bootstrap reloc.

Also remove workaround used on previous versions of binutils for mips.

Support for i386 ELF. Not an indication that the change is going to be made,
just so that these files are maintained in the tree.

Delete all the no-op RELOC_GOT() macros and their uses.
Annotate RELOC_DYN() on non-hppa as only used in lib/csu.
Delete some inconsistent comments, adjust whitespace, and reorder
mips64's archdep.h so that the ld.so/*/archdep.h files look
(almost) the same.

ok visa@ kettenis@

Prefer the size-independent ELF identifiers over the size-specific ones.
Strip superfluous parens from return statements while here.

Done programatically with two perl invocations

idea ok kettenis@ drahn@
ok visa@

Use <elf.h> instead of <elf_abi.h>

ok jasper@, jca@, deraadt@

On fatal errors, kill ourselves with thrkill(0,9,NULL) instead of
simply exiting, via helper functions _dl_die(), _dl_diedie(), and
_dl_oom().

prompted by a complaint from jsing@
ok jsing@ deraadt@

_dl_exit() is __dead, so it should return void.
Move _dl_mmap() and _dl_mquery() inlines from archdep.h to syscall.h and
remove pointless casts and unnecessary parens.

ok kettenis@

Delete ancient macros and unnecessary #includes

ok deraadt@

Remove dependency on __got_{start,end} symbols and look at PT_GNU_RELRO
instead. Result in a few more pages that aren't writable on some platforms
(such as hppa). Based on an initial diff from guenther@.

Thanks to deraadt@ for testing.

ok guenther@

fix types for mmap wrappers. A few whitespace cleanups snuck in.
ok guenther

Simplify the relocation code for the ld.so bootstrap and static pie: track
just the dynamic tags are needed instead of reusing the generic elf_object_t
structure.

testing and feedback from miod@
ok kettenis@

Expand Elf_Rel relocations to include DT_JMPREL. Inspect DT_PLTREL value
to determine if DT_JMPREL relocations are REL or RELA and conditionally
perform DT_JMPREL in either REL or RELA as needed (idea from kettenis@).
Remove unneeded i386 RELA implementation. i386 static pie working now.

okay kettenis@

Self-relocation code for i386.

Fix handling of hppa RELOC_IPLT relocations during 'bootstrap relocation'.

ok miod@, deraadt@, jsing@

Change define used to deal with PLT protection, use postive logic not negative.
ok mickey@

Check for RTLD_TEXT_PLT define instead of an architecture specific check.

pefo 3/4 licence cleanups

Change mquery() function call signature to be the same a mmap(). It
needs the prot/flags info and passing the addresses via arg/return allows
it to be traced via ktrace better than an in/out paramter.
This adds a new mquery syscall and renames the old one to omquery.
New kernel _MUST_ be built, booted, and 'make includes' before building
ld.so with this change.

backout mquery change, something broke when not combined with a different diff.

change mquery() function call signature to be the same a mmap(). It
needs the prot/flags info and passing the addresses via arg/return allows
it to be traced via ktrace better than an in/out paramter.
This adds a new mquery syscall and renames the old one to omquery.
New kernel _MUST_ be built and installed before building ld.so with this change.
ok millert@ tedu@

mquery support, currently for i386 only.

After relocation is completed, remove write protection from GOT/PLT in ld.so.

Some small fixes in MI code for mips backport. A new reloc md function,
RELOC_GOT, was added to handle mips got bootstrap reloc.

Also remove workaround used on previous versions of binutils for mips.

Support for i386 ELF. Not an indication that the change is going to be made,
just so that these files are maintained in the tree.

Prefer the size-independent ELF identifiers over the size-specific ones.
Strip superfluous parens from return statements while here.

Done programatically with two perl invocations

idea ok kettenis@ drahn@
ok visa@

Use <elf.h> instead of <elf_abi.h>

ok jasper@, jca@, deraadt@

On fatal errors, kill ourselves with thrkill(0,9,NULL) instead of
simply exiting, via helper functions _dl_die(), _dl_diedie(), and
_dl_oom().

prompted by a complaint from jsing@
ok jsing@ deraadt@

_dl_exit() is __dead, so it should return void.
Move _dl_mmap() and _dl_mquery() inlines from archdep.h to syscall.h and
remove pointless casts and unnecessary parens.

ok kettenis@

Delete ancient macros and unnecessary #includes

ok deraadt@

Remove dependency on __got_{start,end} symbols and look at PT_GNU_RELRO
instead. Result in a few more pages that aren't writable on some platforms
(such as hppa). Based on an initial diff from guenther@.

Thanks to deraadt@ for testing.

ok guenther@

fix types for mmap wrappers. A few whitespace cleanups snuck in.
ok guenther

Simplify the relocation code for the ld.so bootstrap and static pie: track
just the dynamic tags are needed instead of reusing the generic elf_object_t
structure.

testing and feedback from miod@
ok kettenis@

Expand Elf_Rel relocations to include DT_JMPREL. Inspect DT_PLTREL value
to determine if DT_JMPREL relocations are REL or RELA and conditionally
perform DT_JMPREL in either REL or RELA as needed (idea from kettenis@).
Remove unneeded i386 RELA implementation. i386 static pie working now.

okay kettenis@

Self-relocation code for i386.

Fix handling of hppa RELOC_IPLT relocations during 'bootstrap relocation'.

ok miod@, deraadt@, jsing@

Change define used to deal with PLT protection, use postive logic not negative.
ok mickey@

Check for RTLD_TEXT_PLT define instead of an architecture specific check.

pefo 3/4 licence cleanups

Change mquery() function call signature to be the same a mmap(). It
needs the prot/flags info and passing the addresses via arg/return allows
it to be traced via ktrace better than an in/out paramter.
This adds a new mquery syscall and renames the old one to omquery.
New kernel _MUST_ be built, booted, and 'make includes' before building
ld.so with this change.

backout mquery change, something broke when not combined with a different diff.

change mquery() function call signature to be the same a mmap(). It
needs the prot/flags info and passing the addresses via arg/return allows
it to be traced via ktrace better than an in/out paramter.
This adds a new mquery syscall and renames the old one to omquery.
New kernel _MUST_ be built and installed before building ld.so with this change.
ok millert@ tedu@

mquery support, currently for i386 only.

After relocation is completed, remove write protection from GOT/PLT in ld.so.

Some small fixes in MI code for mips backport. A new reloc md function,
RELOC_GOT, was added to handle mips got bootstrap reloc.

Also remove workaround used on previous versions of binutils for mips.

Support for i386 ELF. Not an indication that the change is going to be made,
just so that these files are maintained in the tree.

Use <elf.h> instead of <elf_abi.h>

ok jasper@, jca@, deraadt@

On fatal errors, kill ourselves with thrkill(0,9,NULL) instead of
simply exiting, via helper functions _dl_die(), _dl_diedie(), and
_dl_oom().

prompted by a complaint from jsing@
ok jsing@ deraadt@

_dl_exit() is __dead, so it should return void.
Move _dl_mmap() and _dl_mquery() inlines from archdep.h to syscall.h and
remove pointless casts and unnecessary parens.

ok kettenis@

Delete ancient macros and unnecessary #includes

ok deraadt@

Remove dependency on __got_{start,end} symbols and look at PT_GNU_RELRO
instead. Result in a few more pages that aren't writable on some platforms
(such as hppa). Based on an initial diff from guenther@.

Thanks to deraadt@ for testing.

ok guenther@

fix types for mmap wrappers. A few whitespace cleanups snuck in.
ok guenther

Simplify the relocation code for the ld.so bootstrap and static pie: track
just the dynamic tags are needed instead of reusing the generic elf_object_t
structure.

testing and feedback from miod@
ok kettenis@

Expand Elf_Rel relocations to include DT_JMPREL. Inspect DT_PLTREL value
to determine if DT_JMPREL relocations are REL or RELA and conditionally
perform DT_JMPREL in either REL or RELA as needed (idea from kettenis@).
Remove unneeded i386 RELA implementation. i386 static pie working now.

okay kettenis@

Self-relocation code for i386.

Fix handling of hppa RELOC_IPLT relocations during 'bootstrap relocation'.

ok miod@, deraadt@, jsing@

Change define used to deal with PLT protection, use postive logic not negative.
ok mickey@

Check for RTLD_TEXT_PLT define instead of an architecture specific check.

pefo 3/4 licence cleanups

Change mquery() function call signature to be the same a mmap(). It
needs the prot/flags info and passing the addresses via arg/return allows
it to be traced via ktrace better than an in/out paramter.
This adds a new mquery syscall and renames the old one to omquery.
New kernel _MUST_ be built, booted, and 'make includes' before building
ld.so with this change.

backout mquery change, something broke when not combined with a different diff.

change mquery() function call signature to be the same a mmap(). It
needs the prot/flags info and passing the addresses via arg/return allows
it to be traced via ktrace better than an in/out paramter.
This adds a new mquery syscall and renames the old one to omquery.
New kernel _MUST_ be built and installed before building ld.so with this change.
ok millert@ tedu@

mquery support, currently for i386 only.

After relocation is completed, remove write protection from GOT/PLT in ld.so.

Some small fixes in MI code for mips backport. A new reloc md function,
RELOC_GOT, was added to handle mips got bootstrap reloc.

Also remove workaround used on previous versions of binutils for mips.

Support for i386 ELF. Not an indication that the change is going to be made,
just so that these files are maintained in the tree.