Rather than having a single bool to conditionally detect haswell-level
instruction features. The granularity is increased with a new
`x64_extension_mask` where individual features within the x64 backend
can be turned on or off in a bit-mask manner. Since we have an ARM
backend on the horizon, I've added this to the new `x64`
configuration-group rather than `CPU`. This new pattern will hopefully
allow for testing to be more targetted to certain processor features and
allows the user to determine if they want certain features to be enabled
or disabled(such as avoiding BMI2 on certain AMD processors due to
pdep/pext being incredibly slow). The default configuration is to detect
and utilize all available features.
This directory contains the test assets used by the automated codegen test
runner.
Each test is structured as a source [name].s PPC assembly file and the
generated outputs. The outputs are made using the custom build of binutils
setup when xenia-build gentests is called and are checked in to make it easier
to run the tests on Windows.
Tests are run using the xenia-test app or via xenia-build test.
Execution
On Xenia: The test binary is placed into memory at 0x82010000 and all other
memory is zeroed.
All registers are reset to zero. In order to provide useful inputs tests can
specify #_ REGISTER_IN values.
The code is jumped into at the starting address and executed until a blr
instruction is encountered.
After all instructions complete any #_ REGISTER_OUT values are checked and if
they do not match the test is failed.
Registers
All registers except lr, r1, and r13 are available for usage by tests.
Annotations
Annotations can appear at any line in a file. If a number is required it can
be in either hex or decimal form, or IEEE if floating-point.
REGISTER_IN
#_ REGISTER_IN [register name] [register value]
Sets the value of a register prior to executing the instructions.
Examples:
#_ REGISTER_IN r4 0x1234
#_ REGISTER_IN r4 5678
REGISTER_OUT
#_ REGISTER_OUT [register name] [register value]
Defines the expected register value when the instructions have executed.
If after all instructions have completed the register value does not match
the value given here the test will fail.
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