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[vm/ffi] FFI callbacks on ARM32.

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Please see go/dart-ffi-callbacks for design context and motivation.

Change-Id: Ie5edcb8837157c679954a670fb19d545e22fec69
Cq-Include-Trybots: luci.dart.try:vm-kernel-linux-debug-simdbc64-try, vm-kernel-linux-release-simdbc64-try, vm-kernel-mac-debug-simdbc64-try, vm-kernel-mac-release-simdbc64-try, vm-kernel-reload-mac-debug-simdbc64-try, vm-kernel-reload-mac-release-simdbc64-try, vm-kernel-linux-debug-ia32-try, vm-dartkb-linux-debug-simarm64-try, vm-kernel-win-debug-ia32-try, vm-ffi-android-debug-arm-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/101828
Commit-Queue: Samir Jindel <sjindel@google.com>
Reviewed-by: Aart Bik <ajcbik@google.com>
Reviewed-by: Daco Harkes <dacoharkes@google.com>
This commit is contained in:
Samir Jindel
2019-06-03 14:36:04 +00:00
committed by commit-bot@chromium.org
parent a6bbc58d09
commit 8cbb11cc55
14 changed files with 282 additions and 59 deletions
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runtime/vm/stack_frame.h
-8
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@@ -470,14 +470,6 @@ DART_FORCE_INLINE static uword LocalVarAddress(uword fp, intptr_t index) {
return fp + LocalVarIndex(0, index) * kWordSize;
}
#if !defined(TARGET_ARCH_X64) && !defined(TARGET_ARCH_IA32) && \
!defined(TARGET_ARCH_ARM64)
// For FFI native -> Dart callbacks, the number of stack slots between arguments
// passed on stack and arguments saved in callback prologue. This placeholder
// here is for unsupported architectures.
constexpr intptr_t kCallbackSlotsBeforeSavedArguments = -1;
#endif
} // namespace dart
#endif // RUNTIME_VM_STACK_FRAME_H_