(0.41) AArch64: Add space for outgoing JNI argument to J9CInterpreterStackFrame #18484
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…StackFrame This commit adds outgoingArguments array to J9CInterpreterStackFrame for AArch64 VM to avoid overwriting preservedGPRs and preservedFPRs when calling out to jitReleaseVMAccess helper from JNI invocation sequence. This commit also updates ARM64JNILinkage to store JNI method arguments that are passed by stack to the area where the outgoingArguments array resides. Adding outgoingArguments makes the size of J9CInterpreterStackFrame large and some slots are not accessible with ldp/stp instructions using sp as a base register. Thus, this commit also updates m4 macros in arm64helpers.m4. They use the start of slots for saving JIT GPRs as the base address and x16 as the base register. Issue: eclipse-openj9#18149 Signed-off-by: Akira Saitoh <saiaki@jp.ibm.com>
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What about #18233, does this also need to be included? |
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I guess that's a side affect of #18212, which showed up in the head stream testing but doesn't directly impact this fix. |
pshipton
approved these changes
Nov 20, 2023
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This commit adds outgoingArguments array to J9CInterpreterStackFrame for AArch64 VM to avoid overwriting preservedGPRs and preservedFPRs when calling out to jitReleaseVMAccess helper from JNI invocation sequence.
This commit also updates ARM64JNILinkage to store JNI method arguments that are passed by stack to the area where the outgoingArguments array resides.
Adding outgoingArguments makes the size of J9CInterpreterStackFrame large and some slots are not accessible with ldp/stp instructions using sp as a base register. Thus, this commit also updates m4 macros in arm64helpers.m4. They use the start of slots for saving JIT GPRs as the base address and x16 as the base register.
Issue: #18149, #18480
Master PR: #18227