Return high address masks correctly in Process (#78379) #7983
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
In https://reviews.llvm.org/D151292 I added the ability to track address masks separately for high and low memory addresses, a capability of AArch64. I did my testing with manual address mask settings (via target.process.highmem-virtual-addressable-bits) but didn't have a real corefile that included this metadata and required it. My intention is that when the high address mask isn't specified, by the user (via the setting) or the Process plugin, we fall back to using the low address mask. The low and high address mask is the same for almost all environments. But the patch I wrote never uses the Process plugin high address mask if it was set, e.g. from corefile metadata. This patch corrects that. I also have an old patch in Phabractor that was approved to add FixAddress methods to SBProcess; I need to pick that patch up and finish it (I wanted to add an enum to specify which mask is being requested iirc), so I can do address masks tests in API tests. rdar://120926000 (cherry picked from commit 54d8193)
|
@swift-ci test |
jasonmolenda
deleted the
r120926000-correctly-use-high-memory-process-plugin-address-masks
branch
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
In https://reviews.llvm.org/D151292 I added the ability to track address masks separately for high and low memory addresses, a capability of AArch64. I did my testing with manual address mask settings (via target.process.highmem-virtual-addressable-bits) but didn't have a real corefile that included this metadata and required it.
My intention is that when the high address mask isn't specified, by the user (via the setting) or the Process plugin, we fall back to using the low address mask. The low and high address mask is the same for almost all environments.
But the patch I wrote never uses the Process plugin high address mask if it was set, e.g. from corefile metadata. This patch corrects that.
I also have an old patch in Phabractor that was approved to add FixAddress methods to SBProcess; I need to pick that patch up and finish it (I wanted to add an enum to specify which mask is being requested iirc), so I can do address masks tests in API tests.
rdar://120926000
(cherry picked from commit 54d8193)