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179 lines
6.2 KiB
179 lines
6.2 KiB
%def op_aget(load="movl", shift="4", data_offset="MIRROR_INT_ARRAY_DATA_OFFSET", wide="0"):
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/*
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* Array get, 32 bits or less. vAA <- vBB[vCC].
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*
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* for: aget, aget-boolean, aget-byte, aget-char, aget-short, aget-wide
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*
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*/
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/* op vAA, vBB, vCC */
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movzbq 2(rPC), %rax # eax <- BB
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movzbq 3(rPC), %rcx # ecx <- CC
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GET_VREG %eax, %rax # eax <- vBB (array object)
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GET_VREG %ecx, %rcx # ecx <- vCC (requested index)
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testl %eax, %eax # null array object?
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je common_errNullObject # bail if so
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cmpl MIRROR_ARRAY_LENGTH_OFFSET(%eax), %ecx
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jae common_errArrayIndex # index >= length, bail.
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.if $wide
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movq $data_offset(%rax,%rcx,8), %rax
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SET_WIDE_VREG %rax, rINSTq
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.else
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$load $data_offset(%rax,%rcx,$shift), %eax
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SET_VREG %eax, rINSTq
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.endif
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ADVANCE_PC_FETCH_AND_GOTO_NEXT 2
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%def op_aget_boolean():
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% op_aget(load="movzbl", shift="1", data_offset="MIRROR_BOOLEAN_ARRAY_DATA_OFFSET")
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%def op_aget_byte():
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% op_aget(load="movsbl", shift="1", data_offset="MIRROR_BYTE_ARRAY_DATA_OFFSET")
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%def op_aget_char():
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% op_aget(load="movzwl", shift="2", data_offset="MIRROR_CHAR_ARRAY_DATA_OFFSET")
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%def op_aget_object():
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/*
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* Array object get. vAA <- vBB[vCC].
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*
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* for: aget-object
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*/
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/* op vAA, vBB, vCC */
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movzbq 2(rPC), %rax # rax <- BB
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movzbq 3(rPC), %rcx # rcx <- CC
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GET_VREG OUT_32_ARG0, %rax # eax <- vBB (array object)
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GET_VREG OUT_32_ARG1, %rcx # ecx <- vCC (requested index)
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EXPORT_PC
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call SYMBOL(artAGetObjectFromMterp) # (array, index)
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movq rSELF, %rcx
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cmpq $$0, THREAD_EXCEPTION_OFFSET(%rcx)
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jnz MterpException
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SET_VREG_OBJECT %eax, rINSTq
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ADVANCE_PC_FETCH_AND_GOTO_NEXT 2
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%def op_aget_short():
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% op_aget(load="movswl", shift="2", data_offset="MIRROR_SHORT_ARRAY_DATA_OFFSET")
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%def op_aget_wide():
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% op_aget(load="movq", shift="8", data_offset="MIRROR_WIDE_ARRAY_DATA_OFFSET", wide="1")
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%def op_aput(reg="rINST", store="movl", shift="4", data_offset="MIRROR_INT_ARRAY_DATA_OFFSET", wide="0"):
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/*
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* Array put, 32 bits or less. vBB[vCC] <- vAA.
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*
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* for: aput, aput-boolean, aput-byte, aput-char, aput-short, aput-wide
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*
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*/
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/* op vAA, vBB, vCC */
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movzbq 2(rPC), %rax # rax <- BB
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movzbq 3(rPC), %rcx # rcx <- CC
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GET_VREG %eax, %rax # eax <- vBB (array object)
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GET_VREG %ecx, %rcx # ecx <- vCC (requested index)
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testl %eax, %eax # null array object?
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je common_errNullObject # bail if so
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cmpl MIRROR_ARRAY_LENGTH_OFFSET(%eax), %ecx
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jae common_errArrayIndex # index >= length, bail.
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.if $wide
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GET_WIDE_VREG rINSTq, rINSTq
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.else
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GET_VREG rINST, rINSTq
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.endif
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$store $reg, $data_offset(%rax,%rcx,$shift)
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ADVANCE_PC_FETCH_AND_GOTO_NEXT 2
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%def op_aput_boolean():
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% op_aput(reg="rINSTbl", store="movb", shift="1", data_offset="MIRROR_BOOLEAN_ARRAY_DATA_OFFSET")
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%def op_aput_byte():
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% op_aput(reg="rINSTbl", store="movb", shift="1", data_offset="MIRROR_BYTE_ARRAY_DATA_OFFSET")
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%def op_aput_char():
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% op_aput(reg="rINSTw", store="movw", shift="2", data_offset="MIRROR_CHAR_ARRAY_DATA_OFFSET")
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%def op_aput_object():
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/*
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* Store an object into an array. vBB[vCC] <- vAA.
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*/
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/* op vAA, vBB, vCC */
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EXPORT_PC
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leaq OFF_FP_SHADOWFRAME(rFP), OUT_ARG0
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movq rPC, OUT_ARG1
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REFRESH_INST ${opnum}
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movq rINSTq, OUT_ARG2
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call SYMBOL(MterpAputObject) # (array, index)
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testb %al, %al
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jz MterpPossibleException
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ADVANCE_PC_FETCH_AND_GOTO_NEXT 2
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%def op_aput_short():
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% op_aput(reg="rINSTw", store="movw", shift="2", data_offset="MIRROR_SHORT_ARRAY_DATA_OFFSET")
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%def op_aput_wide():
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% op_aput(reg="rINSTq", store="movq", shift="8", data_offset="MIRROR_WIDE_ARRAY_DATA_OFFSET", wide="1")
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%def op_array_length():
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/*
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* Return the length of an array.
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*/
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movl rINST, %eax # eax <- BA
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sarl $$4, rINST # rINST <- B
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GET_VREG %ecx, rINSTq # ecx <- vB (object ref)
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testl %ecx, %ecx # is null?
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je common_errNullObject
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andb $$0xf, %al # eax <- A
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movl MIRROR_ARRAY_LENGTH_OFFSET(%rcx), rINST
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SET_VREG rINST, %rax
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ADVANCE_PC_FETCH_AND_GOTO_NEXT 1
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%def op_fill_array_data():
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/* fill-array-data vAA, +BBBBBBBB */
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EXPORT_PC
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movslq 2(rPC), %rcx # rcx <- ssssssssBBBBbbbb
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leaq (rPC,%rcx,2), OUT_ARG1 # OUT_ARG1 <- PC + ssssssssBBBBbbbb*2
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GET_VREG OUT_32_ARG0, rINSTq # OUT_ARG0 <- vAA (array object)
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call SYMBOL(MterpFillArrayData) # (obj, payload)
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testb %al, %al # 0 means an exception is thrown
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jz MterpPossibleException
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ADVANCE_PC_FETCH_AND_GOTO_NEXT 3
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%def op_filled_new_array(helper="MterpFilledNewArray"):
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/*
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* Create a new array with elements filled from registers.
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*
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* for: filled-new-array, filled-new-array/range
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*/
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/* op vB, {vD, vE, vF, vG, vA}, class@CCCC */
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/* op {vCCCC..v(CCCC+AA-1)}, type@BBBB */
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.extern $helper
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EXPORT_PC
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leaq OFF_FP_SHADOWFRAME(rFP), OUT_ARG0
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movq rPC, OUT_ARG1
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movq rSELF, OUT_ARG2
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call SYMBOL($helper)
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testb %al, %al # 0 means an exception is thrown
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jz MterpPossibleException
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ADVANCE_PC_FETCH_AND_GOTO_NEXT 3
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%def op_filled_new_array_range():
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% op_filled_new_array(helper="MterpFilledNewArrayRange")
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%def op_new_array():
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/*
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* Allocate an array of objects, specified with the array class
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* and a count.
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*
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* The verifier guarantees that this is an array class, so we don't
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* check for it here.
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*/
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/* new-array vA, vB, class@CCCC */
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EXPORT_PC
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leaq OFF_FP_SHADOWFRAME(rFP), OUT_ARG0
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movq rPC, OUT_ARG1
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REFRESH_INST ${opnum}
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movq rINSTq, OUT_ARG2
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movq rSELF, OUT_ARG3
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call SYMBOL(MterpNewArray)
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testb %al, %al # 0 means an exception is thrown
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jz MterpPossibleException
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ADVANCE_PC_FETCH_AND_GOTO_NEXT 2
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