ONE_ARG_DOWNCALL art_quick_resolve_string, artResolveStringFromCode, RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
// Generate the allocation entrypoints for each allocator.
-GENERATE_ALLOC_ENTRYPOINTS_FOR_EACH_ALLOCATOR
+GENERATE_ALLOC_ENTRYPOINTS_FOR_NON_REGION_TLAB_ALLOCATORS
+// Comment out allocators that have arm64 specific asm.
+// GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_region_tlab, RegionTLAB) implemented in asm
+// GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_region_tlab, RegionTLAB)
+// GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_region_tlab, RegionTLAB)
+// GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_region_tlab, RegionTLAB) implemented in asm
+// GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_region_tlab, RegionTLAB)
// A hand-written override for GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_rosalloc, RosAlloc).
ENTRY art_quick_alloc_object_rosalloc
RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
END art_quick_alloc_object_rosalloc
+
+// The common fast path code for art_quick_alloc_array_region_tlab.
+.macro ALLOC_ARRAY_TLAB_FAST_PATH slowPathLabel, xClass, wClass, xCount, wCount, xTemp0, wTemp0, xTemp1, wTemp1, xTemp2, wTemp2
+ // Check null class
+ cbz \wClass, \slowPathLabel
+ ALLOC_ARRAY_TLAB_FAST_PATH_RESOLVED \slowPathLabel, \xClass, \wClass, \xCount, \wCount, \xTemp0, \wTemp0, \xTemp1, \wTemp1, \xTemp2, \wTemp2
+.endm
+
+// The common fast path code for art_quick_alloc_array_region_tlab.
+.macro ALLOC_ARRAY_TLAB_FAST_PATH_RESOLVED slowPathLabel, xClass, wClass, xCount, wCount, xTemp0, wTemp0, xTemp1, wTemp1, xTemp2, wTemp2
+ // Array classes are never finalizable or uninitialized, no need to check.
+ ldr \wTemp0, [\xClass, #MIRROR_CLASS_COMPONENT_TYPE_OFFSET] // Load component type
+ UNPOISON_HEAP_REF \wTemp0
+ ldr \wTemp0, [\xTemp0, #MIRROR_CLASS_OBJECT_PRIMITIVE_TYPE_OFFSET]
+ lsr \xTemp0, \xTemp0, #PRIMITIVE_TYPE_SIZE_SHIFT_SHIFT // Component size shift is in high 16
+ // bits.
+ // xCount is holding a 32 bit value,
+ // it can not overflow.
+ lsl \xTemp1, \xCount, \xTemp0 // Calculate data size
+ // Add array data offset and alignment.
+ add \xTemp1, \xTemp1, #(MIRROR_INT_ARRAY_DATA_OFFSET + OBJECT_ALIGNMENT_MASK)
+#if MIRROR_LONG_ARRAY_DATA_OFFSET != MIRROR_INT_ARRAY_DATA_OFFSET + 4
+#error Long array data offset must be 4 greater than int array data offset.
+#endif
+
+ add \xTemp0, \xTemp0, #1 // Add 4 to the length only if the
+ // component size shift is 3
+ // (for 64 bit alignment).
+ and \xTemp0, \xTemp0, #4
+ add \xTemp1, \xTemp1, \xTemp0
+ and \xTemp1, \xTemp1, #OBJECT_ALIGNMENT_MASK_TOGGLED // Round up the object size by the
+ // object alignment. (addr + 7) & ~7.
+ // Add by 7 is done above.
+
+ cmp \xTemp1, #MIN_LARGE_OBJECT_THRESHOLD // Possibly a large object, go slow
+ bhs \slowPathLabel // path.
+
+ ldr \xTemp0, [xSELF, #THREAD_LOCAL_POS_OFFSET] // Check tlab for space, note that
+ // we use (end - begin) to handle
+ // negative size arrays. It is
+ // assumed that a negative size will
+ // always be greater unsigned than
+ // region size.
+ ldr \xTemp2, [xSELF, #THREAD_LOCAL_END_OFFSET]
+ sub \xTemp2, \xTemp2, \xTemp0
+ cmp \xTemp1, \xTemp2
+ bhi \slowPathLabel
+
+ // "Point of no slow path". Won't go to the slow path from here on. OK to clobber x0 and x1.
+ // Move old thread_local_pos to x0
+ // for the return value.
+ mov x0, \xTemp0
+ add \xTemp0, \xTemp0, \xTemp1
+ str \xTemp0, [xSELF, #THREAD_LOCAL_POS_OFFSET] // Store new thread_local_pos.
+ ldr \xTemp0, [xSELF, #THREAD_LOCAL_OBJECTS_OFFSET] // Increment thread_local_objects.
+ add \xTemp0, \xTemp0, #1
+ str \xTemp0, [xSELF, #THREAD_LOCAL_OBJECTS_OFFSET]
+ POISON_HEAP_REF \wClass
+ str \wClass, [x0, #MIRROR_OBJECT_CLASS_OFFSET] // Store the class pointer.
+ str \wCount, [x0, #MIRROR_ARRAY_LENGTH_OFFSET] // Store the array length.
+ // Fence.
+ dmb ishst
+ ret
+.endm
+
// The common fast path code for art_quick_alloc_object_tlab and art_quick_alloc_object_region_tlab.
//
// x0: type_idx/return value, x1: ArtMethod*, x2: Class*, xSELF(x19): Thread::Current
// Need to preserve x0 and x1 to the slow path.
.macro ALLOC_OBJECT_TLAB_FAST_PATH slowPathLabel
cbz x2, \slowPathLabel // Check null class
- // Check class status.
- ldr w3, [x2, #MIRROR_CLASS_STATUS_OFFSET]
+ ALLOC_OBJECT_TLAB_FAST_PATH_RESOLVED \slowPathLabel
+.endm
+
+.macro ALLOC_OBJECT_TLAB_FAST_PATH_RESOLVED slowPathLabel
+ ldr w3, [x2, #MIRROR_CLASS_STATUS_OFFSET] // Check class status.
cmp x3, #MIRROR_CLASS_STATUS_INITIALIZED
bne \slowPathLabel
// Add a fake dependence from the
// a load-acquire for the status).
eor x3, x3, x3
add x2, x2, x3
+ ALLOC_OBJECT_TLAB_FAST_PATH_INITIALIZED \slowPathLabel
+.endm
+
+.macro ALLOC_OBJECT_TLAB_FAST_PATH_INITIALIZED slowPathLabel
// Check access flags has
// kAccClassIsFinalizable.
ldr w3, [x2, #MIRROR_CLASS_ACCESS_FLAGS_OFFSET]
RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
END art_quick_alloc_object_tlab
-// A hand-written override for GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_region_tlab, RegionTLAB)
-ENTRY art_quick_alloc_object_region_tlab
+// The common code for art_quick_alloc_object_*region_tlab
+.macro GENERATE_ALLOC_OBJECT_REGION_TLAB name, entrypoint, fast_path, is_resolved
+ENTRY \name
// Fast path region tlab allocation.
- // x0: type_idx/return value, x1: ArtMethod*, xSELF(x19): Thread::Current
+ // x0: type_idx/resolved class/return value, x1: ArtMethod*, xSELF(x19): Thread::Current
+ // If is_resolved is 1 then x0 is the resolved type, otherwise it is the index.
// x2-x7: free.
#if !defined(USE_READ_BARRIER)
mvn x0, xzr // Read barrier must be enabled here.
ret // Return -1.
#endif
+.if \is_resolved
+ mov x2, x0 // class is actually stored in x0 already
+.else
ldr x2, [x1, #ART_METHOD_DEX_CACHE_TYPES_OFFSET_64] // Load dex cache resolved types array
// Load the class (x2)
ldr w2, [x2, x0, lsl #COMPRESSED_REFERENCE_SIZE_SHIFT]
-
+.endif
// Most common case: GC is not marking.
ldr w3, [xSELF, #THREAD_IS_GC_MARKING_OFFSET]
- cbnz x3, .Lart_quick_alloc_object_region_tlab_marking
-.Lart_quick_alloc_object_region_tlab_do_allocation:
- ALLOC_OBJECT_TLAB_FAST_PATH .Lart_quick_alloc_object_region_tlab_slow_path
-.Lart_quick_alloc_object_region_tlab_marking:
+ cbnz x3, .Lmarking\name
+.Ldo_allocation\name:
+ \fast_path .Lslow_path\name
+.Lmarking\name:
// GC is marking, check the lock word of the class for the mark bit.
// If the class is null, go slow path. The check is required to read the lock word.
- cbz w2, .Lart_quick_alloc_object_region_tlab_slow_path
+ cbz w2, .Lslow_path\name
// Class is not null, check mark bit in lock word.
ldr w3, [x2, #MIRROR_OBJECT_LOCK_WORD_OFFSET]
// If the bit is not zero, do the allocation.
- tbnz w3, #LOCK_WORD_MARK_BIT_SHIFT, .Lart_quick_alloc_object_region_tlab_do_allocation
+ tbnz w3, #LOCK_WORD_MARK_BIT_SHIFT, .Ldo_allocation\name
// The read barrier slow path. Mark
// the class.
stp x0, x1, [sp, #-32]! // Save registers (x0, x1, lr).
ldp x0, x1, [sp, #0] // Restore registers.
ldr xLR, [sp, #16]
add sp, sp, #32
- b .Lart_quick_alloc_object_region_tlab_do_allocation
-.Lart_quick_alloc_object_region_tlab_slow_path:
+ b .Ldo_allocation\name
+.Lslow_path\name:
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME // Save callee saves in case of GC.
mov x2, xSELF // Pass Thread::Current.
- bl artAllocObjectFromCodeRegionTLAB // (uint32_t type_idx, Method* method, Thread*)
+ bl \entrypoint // (uint32_t type_idx, Method* method, Thread*)
RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME
RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
-END art_quick_alloc_object_region_tlab
+END \name
+.endm
+
+GENERATE_ALLOC_OBJECT_REGION_TLAB art_quick_alloc_object_region_tlab, artAllocObjectFromCodeRegionTLAB, ALLOC_OBJECT_TLAB_FAST_PATH, 0
+GENERATE_ALLOC_OBJECT_REGION_TLAB art_quick_alloc_object_resolved_region_tlab, artAllocObjectFromCodeResolvedRegionTLAB, ALLOC_OBJECT_TLAB_FAST_PATH_RESOLVED, 1
+GENERATE_ALLOC_OBJECT_REGION_TLAB art_quick_alloc_object_initialized_region_tlab, artAllocObjectFromCodeInitializedRegionTLAB, ALLOC_OBJECT_TLAB_FAST_PATH_INITIALIZED, 1
+
+// The common code for art_quick_alloc_array_*region_tlab
+.macro GENERATE_ALLOC_ARRAY_REGION_TLAB name, entrypoint, fast_path, is_resolved
+ENTRY \name
+ // Fast path array allocation for region tlab allocation.
+ // x0: uint32_t type_idx
+ // x1: int32_t component_count
+ // x2: ArtMethod* method
+ // x3-x7: free.
+#if !defined(USE_READ_BARRIER)
+ mvn x0, xzr // Read barrier must be enabled here.
+ ret // Return -1.
+#endif
+.if \is_resolved
+ mov x3, x0
+ // If already resolved, class is stored in x0
+.else
+ ldr x3, [x2, #ART_METHOD_DEX_CACHE_TYPES_OFFSET_64] // Load dex cache resolved types array
+ // Load the class (x2)
+ ldr w3, [x3, x0, lsl #COMPRESSED_REFERENCE_SIZE_SHIFT]
+.endif
+ // Most common case: GC is not marking.
+ ldr w4, [xSELF, #THREAD_IS_GC_MARKING_OFFSET]
+ cbnz x4, .Lmarking\name
+.Ldo_allocation\name:
+ \fast_path .Lslow_path\name, x3, w3, x1, w1, x4, w4, x5, w5, x6, w6
+.Lmarking\name:
+ // GC is marking, check the lock word of the class for the mark bit.
+ // If the class is null, go slow path. The check is required to read the lock word.
+ cbz w3, .Lslow_path\name
+ // Class is not null, check mark bit in lock word.
+ ldr w4, [x3, #MIRROR_OBJECT_LOCK_WORD_OFFSET]
+ // If the bit is not zero, do the allocation.
+ tbnz w4, #LOCK_WORD_MARK_BIT_SHIFT, .Ldo_allocation\name
+ // The read barrier slow path. Mark
+ // the class.
+ stp x0, x1, [sp, #-32]! // Save registers (x0, x1, x2, lr).
+ stp x2, xLR, [sp, #16]
+ mov x0, x3 // Pass the class as the first param.
+ bl artReadBarrierMark
+ mov x3, x0 // Get the (marked) class back.
+ ldp x2, xLR, [sp, #16]
+ ldp x0, x1, [sp], #32 // Restore registers.
+ b .Ldo_allocation\name
+.Lslow_path\name:
+ // x0: uint32_t type_idx / mirror::Class* klass (if resolved)
+ // x1: int32_t component_count
+ // x2: ArtMethod* method
+ // x3: Thread* self
+ SETUP_REFS_ONLY_CALLEE_SAVE_FRAME // save callee saves in case of GC
+ mov x3, xSELF // pass Thread::Current
+ bl \entrypoint
+ RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME
+ RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
+END \name
+.endm
+
+GENERATE_ALLOC_ARRAY_REGION_TLAB art_quick_alloc_array_region_tlab, artAllocArrayFromCodeRegionTLAB, ALLOC_ARRAY_TLAB_FAST_PATH, 0
+// TODO: art_quick_alloc_array_resolved_region_tlab seems to not get called. Investigate compiler.
+GENERATE_ALLOC_ARRAY_REGION_TLAB art_quick_alloc_array_resolved_region_tlab, artAllocArrayFromCodeResolvedRegionTLAB, ALLOC_ARRAY_TLAB_FAST_PATH_RESOLVED, 1
/*
* Called by managed code when the thread has been asked to suspend.
ONE_ARG_DOWNCALL art_quick_alloc_string_from_string ## c_suffix, artAllocStringFromStringFromCode ## cxx_suffix, RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
.macro GENERATE_ALLOC_ENTRYPOINTS_FOR_EACH_ALLOCATOR
+GENERATE_ALLOC_ENTRYPOINTS_FOR_NON_REGION_TLAB_ALLOCATORS
+GENERATE_ALLOC_ENTRYPOINTS_FOR_REGION_TLAB_ALLOCATOR
+.endm
+
+.macro GENERATE_ALLOC_ENTRYPOINTS_FOR_REGION_TLAB_ALLOCATOR
+// This is to be separately defined for each architecture to allow a hand-written assembly fast path.
+// GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_region_tlab, RegionTLAB)
+GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_region_tlab, RegionTLAB)
+.endm
+
+.macro GENERATE_ALLOC_ENTRYPOINTS_FOR_NON_REGION_TLAB_ALLOCATORS
GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_dlmalloc, DlMalloc)
GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_dlmalloc, DlMalloc)
GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_dlmalloc, DlMalloc)
GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_region_instrumented, RegionInstrumented)
GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_region_instrumented, RegionInstrumented)
-// This is to be separately defined for each architecture to allow a hand-written assembly fast path.
-// GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_region_tlab, RegionTLAB)
-GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_region_tlab, RegionTLAB)
-GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_region_tlab, RegionTLAB)
-GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_WITH_ACCESS_CHECK(_region_tlab, RegionTLAB)
-GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY(_region_tlab, RegionTLAB)
-GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_RESOLVED(_region_tlab, RegionTLAB)
-GENERATE_ALLOC_ENTRYPOINTS_ALLOC_ARRAY_WITH_ACCESS_CHECK(_region_tlab, RegionTLAB)
-GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY(_region_tlab, RegionTLAB)
-GENERATE_ALLOC_ENTRYPOINTS_CHECK_AND_ALLOC_ARRAY_WITH_ACCESS_CHECK(_region_tlab, RegionTLAB)
-GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_BYTES(_region_tlab, RegionTLAB)
-GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_CHARS(_region_tlab, RegionTLAB)
-GENERATE_ALLOC_ENTRYPOINTS_ALLOC_STRING_FROM_STRING(_region_tlab, RegionTLAB)
-
GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_region_tlab_instrumented, RegionTLABInstrumented)
GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_region_tlab_instrumented, RegionTLABInstrumented)
GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_INITIALIZED(_region_tlab_instrumented, RegionTLABInstrumented)
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