This creates a new step that can run foreign binaries when
emulation is enabled using options such as `enable_qemu`.
When an incompatible binary is found, the binary will not be executed.
This differs from `RunStep` which will always execute a binary,
regardless of the compatibility.
This is useful for usecases where the user wishes to allow for running the
binary on any supported platform either natively or through emulation,
but not generate an error when met with an incompatibility.
The above is useful when creating test cases that rely on running the binary
and optionally verifying its output.
The addition of this Step was generated by the need for our linker tests.
For that reason, a handy function was created on `CheckObjectStep` to ease
the setup for that.
* test/link: initial wasm support
This adds basic parsing and dumping of wasm section so they
can be tested using the new linker-test infrastructure.
* test/link: all wasm sections parsing and dumping
We now parse and dump all sections for the wasm binary format.
Currently, this only dumps the name of a custom section.
Later this should also dump symbol table, name, linking metadata and relocations.
All of those live within the custom sections.
* Add wasm linker test
This also fixes a parser mistake in reading the flags.
* test/link: implement linker tests wasm & fixes
Adds several test cases to test the wasm self-hosted linker.
This also introduces fixes that were caught during the implementation
of those tests.
* test-runner: obey omit_stage2 for standalone
When a standalone test requires stage2, but stage2 is omit
from the compiler, such test case will not be included as part
of the test suite that is being ran. This is to support CI's
where we omit stage2 to lower the memory usage.
Improve testing MachO binaries by verbose printing of the symtab
which includes segment,section names for defined symbols, and
import (dylib) name for imports.