As of today generic _irq_vector_table is used only on 32bit
architectures and 64bit architectures have their own implementation.
Make vectors size adjustable by using uintptr_t instead of uint32_t
for vectors.
The ARCv3 64 bit HS6x processors are going to be first users for
that.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
We should not be initializing/starting/stoping timing functions
multiple times. So this changes how the timing functions are
structured to allow only one initialization, only start when
stopped, and only stop when started.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
gen_isr_tables.py generates C-code which initializes a table with
values, and these values are structs with members cast to
(const void *) and (void *), respectively.
The actual struct definition has a member of type (const void *)
and another of type void (*)(const void *).
In order to avoid a large amount of reported issues in Coverity,
cast this to the exact type.
Signed-off-by: Torstein Grindvik <torstein.grindvik@nordicsemi.no>
This code had one purpose only, feed timing information into a test and
was not used by anything else. The custom trace points unfortunatly were
not accurate and this test was delivering informatin that conflicted
with other tests we have due to placement of such trace points in the
architecture and kernel code.
For such measurements we are planning to use the tracing functionality
in a special mode that would be used for metrics without polluting the
architecture and kernel code with additional tracing and timing code.
Furthermore, much of the assembly code used had issues.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
As of today we have a bit weird situation with generated
sw_isr_table / irq_vector_table tables.
On the final linkage stage we pass two files which content
section with sw_isr_table / irq_vector_table. They are
* libarch__common.a (with an outdated tables from the first
linkage stage)
* isr_tables.c.obj (with an actual tables)
The sections where tables are located are marked with
".gnu.linkonce" prefix. That means:
<<<As a GNU extension, if the name begins with .gnu.linkonce,
we only link a single copy of the section.>>>
However the "libarch__common.a" is passed to linker with
"--whole-archive" option which means <<<include every object
file in the archive in the link, rather than searching the archive
for the required object files>>>
That combination confuses MWDT linker and breaks linkage with
MWDT toolchain.
As a simple fix we can move the sw_isr_table / irq_vector_table
sections to their own library and link this library with
"--no-whole-archive" option.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
All ISRs are meant to take a const struct device pointer, but to
simplify the change let's just move the parameter to constant and that
should be fine.
Fixes#27399
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
The `TEXT_SECTION_OFFSET` symbol is used to specify the offset between
the beginning of the ROM area and the address of the first ROM section.
This commit renames `TEXT_SECTION_OFFSET` to `ROM_START_OFFSET` because
the first ROM section is not always the `.text` section.
Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
Random readability improvements:
- avoid a stack trace on error by using sys.exit()
- include "error:" in the error() output, for grep
- print conflicting addresses on multiple IRQ registration
Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
Currently, the Cortex-M SysTick-based timing info implementation is
incorrectly specified for all 32-bit ARM architectures.
This commit fixes that by restricting the SysTick-based implementation
to the ARM Cortex-M architectures only; in addition, it removes the
ARM64 timing info implementation as it is identical to the default
generic implementation and was previously added only as a workaround
for the aforementioned problem.
Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
z_isr_install is not suited to handle multi-level interrupt formats.
This update allows z_isr_install to accept irq numbers in zephyr format
and place them in the isr table appropriately.
Fixes issue #22145
Signed-off-by: Jaron Kelleher <jkelleher@fb.com>
The timer counter for ticks on MEC1501 SoC is based on the RTOS
timer which runs at 32kHz. This is too slow for timing benchmarks
as most cases can be finished within one or two ticks. Since
the SoC has higher frequency timers running at 48MHz, add
the necessary bits to use these for timing benchmarks.
Fix#23414
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
The current `z_isr_install` implementation asserts that the IRQ to
which the ISR will be installed must be disabled.
This commit disables that assertion for the ARM GIC because the SGI-
type IRQs can never be disabled as per the specifications and this
causes the assertion to fail for them.
Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
The existing isr_tables implementation does not allow enabling only
hardware interrupt vector table without software isr table.
This commit ensures that CONFIG_GEN_IRQ_VECTOR_TABLE can be used
without setting CONFIG_GEN_SW_ISR_TABLE.
Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
To be able to pass the unit test we need to add a set of defines for the
ARM64 architecture. Fix this.
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
Users are reportedly not able to understand how to debug the following
error message from gen_isr_tables:
gen_isr_tables.py: multiple registrations at table_index 8 for irq 8
Debugging issues these kinds of issues is difficult so we need to give
users as much information as possible.
To make it clearer that it could be an abuse of the 'IRQ_CONNECT' API
that is causing the issue we add this to the error message.
Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
In zephyr_linker_sources().
This is done since the point of the location is to place things at given
offsets. This can only be done consistenly if the linker code is placed
into the _first_ section.
All uses of TEXT_START are replaced with ROM_START.
ROM_START is only supported in some arches, as some arches have several
custom sections before text. These don't currently have ROM_START or
TEXT_START available, but that could be added with a bit of refactoring
in their linker script.
No SORT_KEYs are changed.
This also fixes an error introduced when TEXT_START was added, where
TEXT_SECTION_OFFSET was applied to riscv's common linker.ld instead of
to openisa_rv32m1's specific linker.ld.
Signed-off-by: Øyvind Rønningstad <oyvind.ronningstad@nordicsemi.no>
Before introducing the code for ARM64 (AArch64) we need to relocate the
current ARM code to a new AArch32 sub-directory. For now we can assume
that no code is shared between ARM and ARM64.
There are no functional changes. The code is moved to the new location
and the file paths are fixed to reflect this change.
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
to its own linker file snippet so snippets can be placed before it.
Using zephyr_linker_sources().
Signed-off-by: Øyvind Rønningstad <oyvind.ronningstad@nordicsemi.no>
Promote the private z_arch_* namespace, which specifies
the interface between the core kernel and the
architecture code, to a new top-level namespace named
arch_*.
This allows our documentation generation to create
online documentation for this set of interfaces,
and this set of interfaces is worth treating in a
more formal way anyway.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
When compiling the components under the arch directory, the compiler
include paths for arch and kernel private headers need to be specified.
This was previously done by adding 'zephyr_library_include_directories'
to CMakeLists.txt file for every component under the arch directory,
and this resulted in a significant amount of duplicate code.
This commit uses the CMake 'include_directories' command in the root
CMakeLists.txt to simplify specification of the private header include
paths for all the arch components.
Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
This commit refactors kernel and arch headers to establish a boundary
between private and public interface headers.
The refactoring strategy used in this commit is detailed in the issue
This commit introduces the following major changes:
1. Establish a clear boundary between private and public headers by
removing "kernel/include" and "arch/*/include" from the global
include paths. Ideally, only kernel/ and arch/*/ source files should
reference the headers in these directories. If these headers must be
used by a component, these include paths shall be manually added to
the CMakeLists.txt file of the component. This is intended to
discourage applications from including private kernel and arch
headers either knowingly and unknowingly.
- kernel/include/ (PRIVATE)
This directory contains the private headers that provide private
kernel definitions which should not be visible outside the kernel
and arch source code. All public kernel definitions must be added
to an appropriate header located under include/.
- arch/*/include/ (PRIVATE)
This directory contains the private headers that provide private
architecture-specific definitions which should not be visible
outside the arch and kernel source code. All public architecture-
specific definitions must be added to an appropriate header located
under include/arch/*/.
- include/ AND include/sys/ (PUBLIC)
This directory contains the public headers that provide public
kernel definitions which can be referenced by both kernel and
application code.
- include/arch/*/ (PUBLIC)
This directory contains the public headers that provide public
architecture-specific definitions which can be referenced by both
kernel and application code.
2. Split arch_interface.h into "kernel-to-arch interface" and "public
arch interface" divisions.
- kernel/include/kernel_arch_interface.h
* provides private "kernel-to-arch interface" definition.
* includes arch/*/include/kernel_arch_func.h to ensure that the
interface function implementations are always available.
* includes sys/arch_interface.h so that public arch interface
definitions are automatically included when including this file.
- arch/*/include/kernel_arch_func.h
* provides architecture-specific "kernel-to-arch interface"
implementation.
* only the functions that will be used in kernel and arch source
files are defined here.
- include/sys/arch_interface.h
* provides "public arch interface" definition.
* includes include/arch/arch_inlines.h to ensure that the
architecture-specific public inline interface function
implementations are always available.
- include/arch/arch_inlines.h
* includes architecture-specific arch_inlines.h in
include/arch/*/arch_inline.h.
- include/arch/*/arch_inline.h
* provides architecture-specific "public arch interface" inline
function implementation.
* supersedes include/sys/arch_inline.h.
3. Refactor kernel and the existing architecture implementations.
- Remove circular dependency of kernel and arch headers. The
following general rules should be observed:
* Never include any private headers from public headers
* Never include kernel_internal.h in kernel_arch_data.h
* Always include kernel_arch_data.h from kernel_arch_func.h
* Never include kernel.h from kernel_struct.h either directly or
indirectly. Only add the kernel structures that must be referenced
from public arch headers in this file.
- Relocate syscall_handler.h to include/ so it can be used in the
public code. This is necessary because many user-mode public codes
reference the functions defined in this header.
- Relocate kernel_arch_thread.h to include/arch/*/thread.h. This is
necessary to provide architecture-specific thread definition for
'struct k_thread' in kernel.h.
- Remove any private header dependencies from public headers using
the following methods:
* If dependency is not required, simply omit
* If dependency is required,
- Relocate a portion of the required dependencies from the
private header to an appropriate public header OR
- Relocate the required private header to make it public.
This commit supersedes #20047, addresses #19666, and fixes#3056.
Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
Global variables related to timing information have been
renamed to be prefixed with z_arch, with naming arranged
in increasing order of specificity.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
- Remove redundant inclusions in irq_init.c
- Remove comment about thread_abort function,
which does not belong in this file (probably
left-out during code refactoring)
- Include arm cmsis.h only under #ifdef CONFIG_ARM
Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
Fix this warning, as a preparation for a CI check:
arch/common/gen_isr_tables.py:167:11: C0123: Using type() instead of
isinstance() for a typecheck. (unidiomatic-typecheck)
isinstance() has the advantage that it also handles inheritance, though
it doesn't really matter here. It's more common at least.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Reported by pylint's 'bad-whitespace' warning.
Not gonna enable this warning in the CI check, because it flags stuff
like deliberately aligning assignments and gets too cultish. Just a
cleanup pass.
For whatever reason, the common convention in Python is to skip spaces
around '=' when passing keyword arguments and giving default arguments:
f(x=3, y=4)
def f(x, y=8):
...
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
It was discovered that the xtensa version of
z_arch_irq_connect_dynamic() was being removed along with the old
xtensa architecture support, because it was never included in the asm2
builds.
But there's no xtensa-specific code in it at all. Architectures that
use the existing sw_isr_table mechanism and don't (or can't, in the
case of xtensa which has fixed interrupt priority) interpret the other
parameters might as well have access to a working generic
implementation.
Fixes#18272
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
move misc/__assert.h to sys/__assert.h and
create a shim for backward-compatibility.
No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.
Related to #16539
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
No-cache SRAM section is currently used for ARM-only builds
with support for no-cacheable memory sections (i.e.
CONFIG_ARCH_HAS_NOCACHE_MEMORY_SUPPORT) and it holds
uninitialized data. This commit properly defines the
corresponding linker section using SECTION_DATA_PROLOGUE
and GROUP_DATA_LINK_IN macros.
Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
This is the generic symbol to select or otherwise test for when 64-bit
compilation is desired. Two trivial usages of this symbol are also
included.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Update the files which contain no license information with the
'Apache-2.0' SPDX license identifier. Many source files in the tree are
missing licensing information, which makes it harder for compliance
tools to determine the correct license.
By default all files without license information are under the default
license of Zephyr, which is Apache version 2.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
The results were incorrect because the timer was firing the
interrupts before the measurement was made.
Fixes: GH-14556
Signed-off-by: Adithya Baglody <adithya.nagaraj.baglody@intel.com>
Discovered with pylint3.
Use the placeholder name '_' for unproblematic unused variables. It's
what I'm used to, and pylint knows not to flag it.
Python tip:
for i in range(n):
some_list.append(0)
can be replaced with
some_list += n*[0]
Similarly, 3*'\t' gives '\t\t\t'.
(Relevant here because pylint flagged the loop index as unused.)
To do integer division in Python 3, use // instead of /.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Not needed in Python. Detected by check C0325 in pylint3.
Also replace an
if len(tag):
with just
if tag:
Empty strings, byte strings, lists, etc., are falsy in Python.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Update reserved function names starting with one underscore, replacing
them as follows:
'_k_' with 'z_'
'_K_' with 'Z_'
'_handler_' with 'z_handl_'
'_Cstart' with 'z_cstart'
'_Swap' with 'z_swap'
This renaming is done on both global and those static function names
in kernel/include and include/. Other static function names in kernel/
are renamed by removing the leading underscore. Other function names
not starting with any prefix listed above are renamed starting with
a 'z_' or 'Z_' prefix.
Function names starting with two or three leading underscores are not
automatcally renamed since these names will collide with the variants
with two or three leading underscores.
Various generator scripts have also been updated as well as perf,
linker and usb files. These are
drivers/serial/uart_handlers.c
include/linker/kobject-text.ld
kernel/include/syscall_handler.h
scripts/gen_kobject_list.py
scripts/gen_syscall_header.py
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
The commit 77cb942a97 broke the generation of sw_isr_table for
multi-level IRQs. This patch fixes it.
Fixes#13082.
Signed-off-by: Rajavardhan Gundi <rajavardhan.gundi@intel.com>
It's incorrect behavior to call IRQ_CONNECT() on the
same IRQ line more than once, but only x86 was catching
this.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
The script looks for CONFIG_3RD_LEVEL_INTR_xx_OFFSET while
the config is actually CONFIG_3RD_LVL_INTR_xx_OFFSET.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Some extensions to the multi-level interrupt controller are required
to support SoCs with more than four level 2 interrupt "aggregators".
Extend existing support to allow at most 8 level 2 or level 3
aggregators. Use Kconfig macro templates to cut down on boilerplate.
Try to clarify some aspects of the Kconfig help while we're at it, and
change the type of options which count things or are table offsets
from "hex" to "int", so that the generated .config is easier to read.
Finally, make some improvements to gen_isr_tables.py while we are
here. In particular, move some assignments around to cut down on
duplicated work, don't check for symbols we know must exist, and
improve the debug logging output's readability.
Signed-off-by: Marti Bolivar <marti@foundries.io>
It's worth using custom timing information on a few systems to save
cycles or gain precision. But make the use of k_cycle_get_32() a
proper default instead of hardcoding all the platforms and failing to
build on new ones. On Xtensa and RISC-V (and now x86_64) the cycle
informatoin from that call is a very fast wrapper around the native
counters anyway -- all you would save would be the function call
overhead.
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
This reverts commit 140863f6a7.
This was found to be causing problems with certain linkers which
generate different code depending on whether a symbol is weak or
not.
Fixes#11916
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
In the MULTI_LEVEL_INTERRUPTS Kconfig we have a symbol for defining
the maximum IRQ per aggregator: MAX_IRQ_PER_AGGREGATOR
Instead of using a hard-coded value of 32 max irq per level,
let's use the value of MAX_IRQ_PER_AGGREGATOR
Signed-off-by: Michael Scott <mike@foundries.io>
If CONFIG_3RD_LEVEL_INTERRUPTS is not enabled then we see the following
error during sw_isr_table generation:
Traceback (most recent call last):
File "zephyr/arch/common/gen_isr_tables.py", line 291, in <module>
main()
File "zephyr/arch/common/gen_isr_tables.py", line 199, in main
if syms["CONFIG_3RD_LEVEL_INTERRUPTS"]:
KeyError: 'CONFIG_3RD_LEVEL_INTERRUPTS'
ninja: build stopped: subcommand failed.
Fix the logic to look for the symbol instead of referencing it.
Signed-off-by: Michael Scott <mike@foundries.io>
.gnu.linkonce is an internal undocumented ld feature.
Just use __weak, which does the same thing we want.
This is only done for _sw_isr_table. _irq_vector_table
is left alone due to unwanted interactions between
__weak and the ld KEEP() directive.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This patch provides support needed to get timing related
information from riscv32 based SOC.
Signed-off-by: Adithya Baglody <adithya.nagaraj.baglody@intel.com>
This patch provides support needed to get timing related
information from nios2 based SOC.
Signed-off-by: Adithya Baglody <adithya.nagaraj.baglody@intel.com>
This patch provides support needed to get timing related
information from xtensa based SOC.
Signed-off-by: Adithya Baglody <adithya.nagaraj.baglody@intel.com>
This patch provides support needed to get timing related
information from ARC based SOC.
Signed-off-by: Adithya Baglody <adithya.nagaraj.baglody@intel.com>
intList has been populated with the number of isrs, aka interrupts,
but nothing has not been using this information so we drop it and
everything used to construct it.
Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
This is a migration from using code generation to using the C language
which we in the general case we should aways strive towards.
It is equivalent to the simplification that was done with
_irq_spurious here:
https://github.com/zephyrproject-rtos/zephyr/pull/7574
Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
Instead of finding the address of the spurious irq function in the
intList section we now rely on the linker to find the address in the
_irq_spurious symbol.
This is a migration from using code generation to using the C language
which we in the general case we should aways strive towards.
In this specific case it makes the generated code 'irq_tables.c'
easier to read as we replace magic numbers with the &_irq_spurious
token.
Also, the path through the build system that _irq_spurious makes is
much shorter, so it is much easier for a user to understand how it is
used.
Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
In a scenario where a platform harbours multiple interrupts to the
extent the core cannot support it, an interrupt controller is added
as an additional level of interrupt. It typically combines several
sources of interrupt into one line that is then routed to the parent
controller.
Signed-off-by: Rajavardhan Gundi <rajavardhan.gundi@intel.com>
Introducing CMake is an important step in a larger effort to make
Zephyr easy to use for application developers working on different
platforms with different development environment needs.
Simplified, this change retains Kconfig as-is, and replaces all
Makefiles with CMakeLists.txt. The DSL-like Make language that KBuild
offers is replaced by a set of CMake extentions. These extentions have
either provided simple one-to-one translations of KBuild features or
introduced new concepts that replace KBuild concepts.
This is a breaking change for existing test infrastructure and build
scripts that are maintained out-of-tree. But for FW itself, no porting
should be necessary.
For users that just want to continue their work with minimal
disruption the following should suffice:
Install CMake 3.8.2+
Port any out-of-tree Makefiles to CMake.
Learn the absolute minimum about the new command line interface:
$ cd samples/hello_world
$ mkdir build && cd build
$ cmake -DBOARD=nrf52_pca10040 ..
$ cd build
$ make
PR: zephyrproject-rtos#4692
docs: http://docs.zephyrproject.org/getting_started/getting_started.html
Signed-off-by: Sebastian Boe <sebastian.boe@nordicsemi.no>
All system calls made from userspace which involve pointers to kernel
objects (including device drivers) will need to have those pointers
validated; userspace should never be able to crash the kernel by passing
it garbage.
The actual validation with _k_object_validate() will be in the system
call receiver code, which doesn't exist yet.
- CONFIG_USERSPACE introduced. We are somewhat far away from having an
end-to-end implementation, but at least need a Kconfig symbol to
guard the incoming code with. Formal documentation doesn't exist yet
either, but will appear later down the road once the implementation is
mostly finalized.
- In the memory region for RAM, the data section has been moved last,
past bss and noinit. This ensures that inserting generated tables
with addresses of kernel objects does not change the addresses of
those objects (which would make the table invalid)
- The DWARF debug information in the generated ELF binary is parsed to
fetch the locations of all kernel objects and pass this to gperf to
create a perfect hash table of their memory addresses.
- The generated gperf code doesn't know that we are exclusively working
with memory addresses and uses memory inefficently. A post-processing
script process_gperf.py adjusts the generated code before it is
compiled to work with pointer values directly and not strings
containing them.
- _k_object_init() calls inserted into the init functions for the set of
kernel object types we are going to support so far
Issue: ZEP-2187
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
The Xtensa port was the only one remaining to be converted to the new
way of connecting interrupts in Zephyr. Some things are still
unconverted, mainly the exception table, and this will be performed
another time.
Of note: _irq_priority_set() isn't called on _ARCH_IRQ_CONNECT(), since
IRQs can't change priority on Xtensa: while the architecture has the
concept of interrupt priority levels, each line has a fixed level and
can't be changed.
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
For various reasons its often necessary to generate certain
complex data structures at build-time by separate tools outside
of the C compiler. Data is populated to these tools by way of
special binary sections not intended to be included in the final
binary. We currently do this to generate interrupt tables, forthcoming
work will also use this to generate MMU page tables.
The way we have been doing this is to generatea "kernel_prebuilt.elf",
extract the metadata sections with objcopy, run the tool, and then
re-link the kernel with the extra data *and* use objcopy to pull
out the unwanted sections.
This doesn't scale well if multiple post-build steps are needed.
Now this is much simpler; in any Makefile, a special
GENERATED_KERNEL_OBJECT_FILES variable may be appended to containing
the filenames to the generated object files, which will be generated
by Make in the usual fashion.
Instead of using objcopy to pull out, we now create a linker-pass2.cmd
which additionally defines LINKER_PASS2. The source linker script
can #ifdef around this to use the special /DISCARD/ section target
to not include metadata sections in the final binary.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Convert code to use u{8,16,32,64}_t and s{8,16,32,64}_t instead of C99
integer types. There are few places we dont convert over to the new
types because of compatiability with ext/HALs or for ease of transition
at this point. Fixup a few of the PRI formatters so we build with newlib.
Jira: ZEP-2051
Change-Id: I7d2d3697cad04f20aaa8f6e77228f502cd9c8286
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
The interrupts would be placed at incorrect offsets on systems where
some interrupt vectors are reserved for exceptions, such as ARC.
Change-Id: I5b1f00eb9e8aecb84ae66e3d0461a734ffb5fbe6
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This is a new mechanism for generating interrupt tables which will
be useful on many architectures. It replaces the old linker-based
mechanism for creating these tables and has a couple advantages:
1) It is now possible to use enums as the IRQ line argument to
IRQ_CONNECT(), which should ease CMSIS integration.
2) The vector table itself is now generated, which lets us place
interrupts directly into the vector table without having to
hard-code them. This is a feature we have long enjoyed on x86
and will enable 'direct' interrupts.
3) More code is common, requiring less arch-specific code to
support.
This patch introduces the common code for this mechanism. Follow-up
patches will enable it on various arches.
Issue: ZEP-1038, ZEP-1165
Change-Id: I9acd6e0de8b438fa9293f2e00563628f7510168a
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
