Age | Commit message (Collapse) | Author |
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Some ABIs (including 32 bit ARM, 64 bit x86) allocate their argument
registers differently depending on their return value. For instance,
if the value needs to be returned in memory because it's too big,
the caller could pass a pointer to where the result should be stored
when the function returns. This pointer acts like an invisible first
argument, offsetting where all the normal arguments actually live.
This change adds a mechanism to handle that case. The Result templates
can now declare an allocate() static method which is given a
ThreadContext *, and a reference to the Position object. It can perform
any adjustment it needs to before the normal argument extraction
starts.
Change-Id: Ibda9095f0e8c9882742d24f5effe309ccb514188
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23747
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
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This dumps a signature for a simcall as if it was going to be invoked,
and can be used for debugging.
Change-Id: I6262b94ad4186bac8dc5a1469e9bb3b8ae9d34e1
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23460
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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Jira Issue: https://gem5.atlassian.net/browse/GEM5-187
Change-Id: I76934d94b4c61570a4ca603388012c65280e2b7c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23197
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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