This is normally needed in LDSO and was previously done by the LDSO specific crt0.s.
I forgot to keep it during the unification of the different crt0s.
fix#1077
Check that in every round really all threads are alive on all CPUs. It
happened that only the first round was ok (all alive) and in the next rounds
some were dead. Unfortunately the test claimed to be successful.
The destructor of the Area object uses invalid caps which results in
a wanted abort of the process on nova. This is mainly the case in forked
process in noux.
This function provides a way to request the size of an previously
allocated block. It is useful to to ease the implementation of realloc
functionality based on Allocator_avl.
All the pre- and post-processing of the startup lib around the main
function of a dynamic program is now done by LDSO. Hence LDSO directly
calls the main function of the program.
Issue #1042
This is needed later when eliminating the need for a startup lib in
dynamic programs to enable LDSO to call ctors and dtors of the program.
Issue #1042
After some research we found that the stack pointer on ARM platforms must be
at least double word aligned (See: "Procedure Call Standard for the ARM
Architecture" - 5.2.1.1). Since a 'call' on ARM will not result in a stack pointer
change (like on x86), the current behavior resulted in a 4 Byte aligned stack
only.
Follow up to #1043
This commit generalizes the bit array in 'base/util/bit_array.h',
so that it can be used in a statically, when the array size is known
at compile time, or dynamically. It uses the dynamic approach of the
bit array for a more generalized version of the packet allocator,
formerly only used by NIC session clients. The more generic packet
allocator is used by the block cache to circumvent the allocation
deadlock described in issue #1059.
Fixes#1059
Base libraries are already contained within ldso.lib.so. Remove unnecessary
filtering from 'dep_lib.mk', make ldso depend on base libs.
Issue #1017
Issue #989
As the initial main-thread stack is not used for the whole main-thread life
anymore but only for the initialization of the Genode environment it can be
downsized to 32Kb for all architectures.
ref #989
For a main thread a thread object is created by the CRT0 before _main gets
called so that _main can already run in a generic environment that, e.g.,
catches stack overflows as a page-fault instead of corrupting the BSS.
Additionally dynamic programs have only one CRT0 - the one of the LDSO -
which does the initialization for both LDSO and program.
ref #989
This utility allows for the manual placement of objects without the need
to have a global placement new operation nor the need for type-specific
new operators.
Issue #989
The x86_64 ABI requires the stack pointer to be 16-byte aligned before the
call of a function and decreased by 8 at the function entrypoint (after
the return address has been pushed to the stack).
Currently, when a new Genode thread gets created, the initial stack
pointer is aligned to 16 byte. On Genode/Linux, the thread entry function
is entered by a 'call' instruction, so the stack pointer alignment at the
function entrypoint is correct. On Fiasco.OC and NOVA, however, the thread
entry function gets executed without a return address being pushed to the
stack, so at the function entrypoint the stack pointer is still aligned to
16 byte, which can cause problems with compiler-generated SSE
instructions.
With this patch, the stack pointer given to a new thread gets aligned to
16 bytes and decreased by 8 by default, since most of the currently
supported base platforms execute the thread entry function without pushing
a return address to the stack. For base-linux, the stack pointer gets
realigned to 16 bytes before the thread entry function gets called.
Fixes#1043.
Delete operators with additional allocator reference/pointer parameters
are needed if the constructor of an 'new(allocator)' allocated object
throws an exception. Also, destroy now uses the operator to free memory
and provides variants with allocator reference and pointer.
The commit includes a simple test scripts 'run/new_delete', which
exercises the several 'delete' cases.
Related to #1030.
Use a bit allocator for the allocation management of thread contexts,
instead of holding allocation information within the Thread_base objects,
which lead to race conditions in the past.
Moreover, extend the Thread_base class interface with the ability to
to add additional stacks to a thread, and associate the context they're
located in with the corresponding Thread_base object. Additional stacks
can be used to do user-level scheduling with stack switching, without breaking
Genode's API.
Fixes#1024Fixes#1036
Change the template parameter for Bit_allocator, and Bit_array. Instead of
assigning words to be used by the bit array, you can now tell the count of
items that shall be used.
Moreover, some dead code, previously using the Bit_allocator, was removed.
Related to #1024
Splitting the new Genode::Deallocator interface from the former
Genode::Allocator interface enables us to restrict the accessible
operations for code that is only supposed to release memory, but not
perform any allocations.
Additionally, this patch introduces variants of the 'new' operator
that takes a reference (as opposed to a pointer) to a Genode::Allocator
as argument.
By assigning the file name as label, we may become able to remove the
filename argument in the future by just interpreting the last part of
the label as filename. By keeping only the label, we won't need to
consider conditional routing (via <if-arg>) based on session arguments
other than the label anymore.
Make 'set_program_var' accessible outside of 'rtld.c'. Also, compile
dynamically linked programs with the '-fPIC' option. Doing not so,
yields to program-global symbols being put in the '.symtab' section
(which can be stripped) only. In order to get access to global
variables from the dynamic linker, the symbols need to reside within
the '.dynsym' section additionally. Hence the '-fPIC'.
ref #989fix#1002
I have no idea where the previous default alignment = 2 in the unsynchronized
singleton came from but as at least the Arndale IC-driver in base-hw needs an
alignment of 4 = address width, unmanaged singleton now uses sizeof(addr_t)
as default alignment.
ref #989
An unmanaged singleton is a singleton object that isn't
constructed or destructed implicitly through the C++ runtime
enviroment. The new header provides a helper to create such objects
and is located in src/base/include.
ref #989
