Avoid repeatedly initializing the shared memory data when creating the child
thread in lib-pthread or lib-wasi-threads.
Add shared memory lock when accessing some fields of the memory instance
if the memory instance is shared.
Init shared memory's memory_data_size/memory_data_end fields according to
the current page count but not max page count.
Add wasm_runtime_set_mem_bound_check_bytes, and refine the error message
when shared memory flag is found but the feature isn't enabled.
Fixes the Cosmopolitan Libc platform attempting to use `/dev/urandom`
on operating systems that do not have it.
Signed-off-by: G4Vi <gavin@dylibso.com>
This patch enables mapping host directories to guest directories by parsing
the `map_dir_list` argument in API `wasm_runtime_init_wasi` for libc-wasi. It
follows the format `<guest-path>::<host-path>`.
It also adds argument `--map-dir=<guest::host>` argument for `iwasm`
common line tool, and allows to add multiple mappings:
```bash
iwasm --map-dir=<guest-path1::host-path1> --map-dir=<guest-path2::host-path2> ...
```
When labels-as-values is enabled in a target which doesn't support
unaligned address access, 16-bit offset is used to store the relative
offset between two opcode labels. But it is a little small and the loader
may report "pre-compiled label offset out of range" error.
Emitting 32-bit data instead to resolve the issue: emit label address in
32-bit target and emit 32-bit relative offset in 64-bit target.
See also:
https://github.com/bytecodealliance/wasm-micro-runtime/issues/2635
When doing more investigations related to this PR:
https://github.com/bytecodealliance/wasm-micro-runtime/pull/2619
We found that in some scenarios the constant might not be directly
available to the LLVM IR builder, e.g.:
```
(func $const_ret (result i32)
i32.const -5
)
(func $foo
(i32.shr_u (i32.const -1) (call $const_ret))
(i32.const 31)
)
```
In that case, the right parameter to `i32.shr_u` is not constant, therefore
the `SHIFT_COUNT_MASK` isn't applied. However, when the optimization
is enabled (`--opt-level` is 2 or 3), the optimization passes resolve the
call into constant, and that constant is poisoned, causing the compiler to
resolve the whole function to an exception.
According to the description of `buildPerModuleDefaultPipeline()` and
`buildLTOPreLinkDefaultPipeline()`, it is not allowed to call them with `O0` level.
Use `buildO0DefaultPipeline` instead when the opt-level is 0.
The LLVM zext IR may be inserted after the terminator of a basic block
when popping the arguments of a wasm block. Change to insert the
zext IR before the terminator of the basic block to resolve the issue.
Reported in #2620.
This PR adds the Cosmopolitan Libc platform enabling compatibility with multiple
x86_64 operating systems with the same binary. The platform is similar to the
Linux platform, but for now only x86_64 with interpreter modes are supported.
The only major change to the core is `posix.c/convert_errno()` was rewritten to use
a switch statement. With Cosmopolitan errno values depend on the currently
running operating system, and so they are non-constant and cannot be used in array
designators. However, the `cosmocc` compiler allows non-constant case labels in
switch statements, enabling the new version.
And updated wamr-test-suites script to add `-j <platform>` option. The spec tests
can be ran via `CC=cosmocc ./test_wamr.sh -j cosmopolitan -t classic-interp`
or `CC=cosmocc ./test_wamr.sh -j cosmopolitan -t fast-interp`.
To make it clearer to users when synchronization behaviour is not
supported, return ENOTSUP when O_RSYNC, O_DSYNC or O_SYNC are
respectively not defined. Linux also doesn't support O_RSYNC despite the
O_RSYNC flag being defined.
Fixed a bug in the processing of the br_table_cache opcode that caused out-of-range
references when the label index was greater than the length of the label.
Avoid the stack traces getting mixed up together when multi-threading is enabled
by using exception_lock/unlock in dumping the call stacks.
And remove duplicated call stack dump in wasm_application.c.
Also update coding guideline CI to fix the clang-format-12 not found issue.
According to the specification,
- fNxM_pmin/max returns v1 or v2 based on flt(v1,v2) result
- fNxM_min/max returns +/-NaN, +/-Inf, v1 or v2 based on more than
flt(v1,v2) result
Fixes issue #2561.
Only when the value kind is LLVMConstantIntValueKind and the value
is not undef and not poison can we extract the value of a constant int.
Fixes#2557 and #2559.
Support muti-module for AOT mode, currently only implement the
multi-module's function import feature for AOT, the memory/table/
global import are not implemented yet.
And update wamr-test-suites scripts, multi-module sample and some
CIs accordingly.
The CI might use clang-17 to build iwasm for Android platform and it may
report compilation error:
https://github.com/bytecodealliance/wasm-micro-runtime/actions/runs/6308980430/job/17128073777
/home/runner/work/wasm-micro-runtime/wasm-micro-runtime/core/iwasm/libraries/libc-wasi/sandboxed-system-primitives/src/blocking_op.c:45:19: error: call to undeclared function 'preadv'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
ssize_t ret = preadv(fd, iov, iovcnt, offset);
^
Explicitly declare preadv and pwritev in android platform header file to resolve it.
`wasm_loader_push_pop_frame_offset` may pop n operands by using
`loader_ctx->stack_cell_num` to check whether the operand can be
popped or not. While `loader_ctx->stack_cell_num` is updated in the
later `wasm_loader_push_pop_frame_ref`, the check may fail if the stack
is in polymorphic state and lead to `ctx->frame_offset` underflow.
Fix issue #2577 and #2586.
There doesn't appear to be a clear reason not to support this behavior.
It seems it was disallowed previously as a precaution. See
67e2e57b02
for more context.
Adapt API usage to new interfaces where applicable, including LLVM function
usage, obsoleted llvm::Optional type and removal of unavailable headers.
Know issues:
- AOT static PGO isn't enabled
- LLVM JIT may run failed due to llvm_orc_registerEHFrameSectionWrapper
isn't linked into iwasm
Return a WASI error code (rather than a host POSIX one). In addition,
there is no need to return an error in the case that the provided buffer
is too large.
Unaligned store v128 value to the AOT function argument of the pointer for
the extra return value may cause segmentation fault.
Fix the issue reported in #2556.
The WASI docs allow for fewer rights to be applied to an fd than requested but
not more. This behavior is also asserted in the rust WASI tests, so it's necessary
for those to pass as well.
Send a signal whose handler is no-op to a blocking thread to wake up
the blocking syscall with either EINTR equivalent or partial success.
Unlike the approach taken in the `dev/interrupt_block_insn` branch (that is,
signal + longjmp similarly to `OS_ENABLE_HW_BOUND_CHECK`), this PR
does not use longjmp because:
* longjmp from signal handler doesn't work on nuttx
refer to https://github.com/apache/nuttx/issues/10326
* the singal+longjmp approach may be too difficult for average programmers
who might implement host functions to deal with
See also https://github.com/bytecodealliance/wasm-micro-runtime/issues/1910
Remove thread local attribute of prev_sig_act_SIGSEGV/SIGBUS to allow using
custom signal handler from non-main thread since in a thread spawned by
embedder, embedder may be unable to call wasm_runtime_init_thread_env to
initialize them.
And fix the handling of prev_sig_act when its sa_handler is SIG_DFL, SIG_IGN,
or a user customized handler.
Add API wasm_runtime_terminate to terminate a module instance
by setting "terminated by user" exception to the module instance.
And update the product-mini of posix platforms.
Note: this doesn't work for some situations like blocking system calls.
Preserve errno because this function is often used like
the following. The caller wants to report the error from the main
operation (`lseek` in this example), not from fd_object_release.
```
off_t ret = lseek(fd_number(fo), offset, nwhence);
fd_object_release(fo);
if (ret < 0)
return convert_errno(errno);
```
This fixes a few test cases in wasi-threads testsuite like wasi_threads_return_main_block.
And also move the special handling for "wasi proc exit" to a more appropriate place.
Introduce module instance context APIs which can set one or more contexts created
by the embedder for a wasm module instance:
```C
wasm_runtime_create_context_key
wasm_runtime_destroy_context_key
wasm_runtime_set_context
wasm_runtime_set_context_spread
wasm_runtime_get_context
```
And make libc-wasi use it and set wasi context as the first context bound to the wasm
module instance.
Also add samples.
Refer to https://github.com/bytecodealliance/wasm-micro-runtime/issues/2460.
When embedding WAMR, this PR allows to register a callback that is
invoked when memory.grow fails.
In case of memory allocation failures, some languages allow to handle
the error (e.g. by checking the return code of malloc/calloc in C), some
others (e.g. Rust) just panic.
While wasi proc exit is not a real trap, what the runtime does on it is mostly same as
real traps. That is, kill the siblings threads and represent the exit/trap as the result of
the "process" to the user api. There seems no reason to distinguish it from real traps
here.
Note that:
- The target thread either doesn't care the specific exception type or ignore wasi
proc exit by themselves. (clear_wasi_proc_exit_exception)
- clear_wasi_proc_exit_exception only clears local exception.
Add simple infrastructure to add more unit tests in the future. At the moment tests
are only executed on Linux, but can be extended to other platforms if needed.
Use https://github.com/google/googletest/ as a framework.
