This commit accepts unusual parameters like EcdsaP384Sha256.
Some certifictes(below certs are in /etc/ssl/certs/ca-certificates.crt on Ubuntu 22.04) use EcdsaP384Sha256 to sign itself.
- Subject: C=GR, L=Athens, O=Hellenic Academic and Research Institutions Cert. Authority, CN=Hellenic Academic and Research Institutions ECC RootCA 2015
- Subject: C=US, ST=Texas, L=Houston, O=SSL Corporation, CN=SSL.com EV Root Certification Authority ECC
- Subject: C=US, ST=Texas, L=Houston, O=SSL Corporation, CN=SSL.com Root Certification Authority ECC
In verify(), hash array `h` is allocated to be larger than the scalar.encoded_length.
The array is regarded as big-endian.
Hash values are filled in the back of the array and the rest bytes in front are filled with zero.
In sign(), the hash array is allocated and filled as same as verify().
In deterministicScalar(), hash bytes are insufficient to generate `k`
To generate `k` without narrowing its value range,
this commit uses algorithm stage h. in "Section 3.2 Generation of k" in RFC6979.
Considering all possible features are known by the linker during
compile-time, we can create arrays on the stack instead of
dynamically allocating hash maps. We use a simple bitset to determine
whether a feature is enabled or not, and from which object file
it originates. This allows us to make feature validation slightly
faster and use less runtime memory.
In the future this could be enhanced further by having a single
array instead with a more sophisticated bitset.
The list of features a Wasm object/binary file can emit can differ
from the list of cpu features. The reason for this is because the
"target_features" section also contains linker features. An example
of this is the "shared-mem" feature, which is a feature for the linker
and not that of the cpu target as defined by LLVM.
Adds a test for inferring features based on a different object file.
Also provides a test case where cpu features are explicitly set on
a library where the end result will output said target features.
When an object file or binary contains the target_features section
we can now parse and then dump its contents in string format so
we can use them in our linker tests to verify the features section.
When the result is not being stripped, we emit the `target_features`
section based on all the used features. This includes features
inferred from linked object files.
Considering we know all possible features upfront, we can use an
array and therefore do not have to dynamically allocate memory.
Using this trick we can also easily order all features based
the same ordering as found in `std.Target.wasm` which is the same
ordering used by LLVM and the like.
Verifies disallowed and used/required features. After verifying,
all errors will be emit to notify the user about incompatible
features. When the user did not define any featureset, we infer
the features from the linked objects instead.
These ifs were missing a case for f80 which should have shifted by one,
but we can just compute the correct value instead. Also, we want the
fractional bits to be a multiple of four, not the mantissa bits, since
the mantissa could have a leading one which we want to be separated.
This makes it easier to understand how control flow should happen in
various cases; already just by doing this it is revealed that
UndefinedSymbol and UndefinedSymbolReference should be merged, and that
MissingMainEntrypoint should be removed in favor of the ErrorFlags
mechanism thath we already have for missing the main entrypoint.
The main motivation for this change, however, is preventing a compile
error when there is conditional compilation inside linker
implementations, causing the flush() error set to depend on compilation
options. With this change, the error set is fixed, and, notably, the
`-Donly-c` flag no longer has compilation errors due to this error set.
This option can be used to produce a C backend build of the self-hosted
compiler, which only has the C backend enabled. Once the C backend is
capable of self-hosting, this will be a way for us to replace our stage1
codebase with a C backend build of self-hosted, which we can then use
for bootstrapping. See #5246 for more details.
Using this option right now results in a crash because the C backend is
not yet passing all the behavior tests.
CMake recognizes the CMAKE_PREFIX_PATH environment variable for some
things, and also the CMAKE_PREFIX_PATH cache variable for other things.
However, it does not relate these two things, i.e. if the environment
variable is set, CMake does not populate the cache variable in a
corresponding manner. Some package systems, such as Homebrew, set the
environment variable but not the cache variable. Furthermore, the
environment variable follows the system path separator, such as ':' on
POSIX and ';' on Windows, but the cache variable follows CMake's array
behavior, i.e. always ';' for a separator.
Closes#13242
This documents status of routines and adds the next work item
"Decimal float library routines", which are only recommended for
binary data. Complete absence of tests is also documented.
This does not document the various aliases, e.g. those for ARM.
Missing Integer library routines:
- __addvsi3
- __addvdi3
- __addvti3
- __addvdi3
- __addvti3
- __subvsi3
- __subvdi3
- __subvti3
- __subvdi3
- __subvti3
- __mulvsi3
- __mulvdi3
- __mulvti3
- __mulvdi3
- __mulvti3
Missing floating library routines:
- __powisf2
- __powidf2
- __powitf2
- __powixf2
Missing routines for symbol-level compatibility to gcc:
- __ashlsi3
- __ashrsi3
- __lshrsi3
cmp.zig was accidently being referenced twice, rather than importing
memcmp.zig. This means that its symbols were also not included in
the generated compiler-rt output.
1. If an object file was not compiled with `MH_SUBSECTIONS_VIA_SYMBOLS`
such a hand-written ASM on x86_64, treat the entire object file as
not suitable for dead code stripping aka a GC root.
2. If there are non-extern relocs within a section, treat the entire
section as a root, at least temporarily until we work out the exact
conditions for marking the atoms live.
