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%def field(helper=""):
/*
* General field read / write (iget-* iput-* sget-* sput-*).
*/
.extern $helper
REFRESH_INST ${opnum} # fix rINST to include opcode
movl rPC, OUT_ARG0(%esp) # arg0: Instruction* inst
movl rINST, OUT_ARG1(%esp) # arg1: uint16_t inst_data
leal OFF_FP_SHADOWFRAME(rFP), %eax
movl %eax, OUT_ARG2(%esp) # arg2: ShadowFrame* sf
movl rSELF, %eax
movl %eax, OUT_ARG3(%esp) # arg3: Thread* self
call SYMBOL($helper)
testb %al, %al
jz MterpPossibleException
RESTORE_IBASE
ADVANCE_PC_FETCH_AND_GOTO_NEXT 2
%def op_check_cast():
/*
* Check to see if a cast from one class to another is allowed.
*/
/* check-cast vAA, class@BBBB */
EXPORT_PC
movzwl 2(rPC), %eax # eax <- BBBB
movl %eax, OUT_ARG0(%esp)
leal VREG_ADDRESS(rINST), %ecx
movl %ecx, OUT_ARG1(%esp)
movl OFF_FP_METHOD(rFP),%eax
movl %eax, OUT_ARG2(%esp)
movl rSELF, %ecx
movl %ecx, OUT_ARG3(%esp)
call SYMBOL(MterpCheckCast) # (index, &obj, method, self)
RESTORE_IBASE
testb %al, %al
jnz MterpPossibleException
ADVANCE_PC_FETCH_AND_GOTO_NEXT 2
%def op_iget(is_object="0", helper="MterpIGetU32"):
% field(helper=helper)
%def op_iget_boolean():
% op_iget(helper="MterpIGetU8")
%def op_iget_byte():
% op_iget(helper="MterpIGetI8")
%def op_iget_char():
% op_iget(helper="MterpIGetU16")
%def op_iget_object():
% op_iget(is_object="1", helper="MterpIGetObj")
%def op_iget_short():
% op_iget(helper="MterpIGetI16")
%def op_iget_wide():
% op_iget(helper="MterpIGetU64")
%def op_instance_of():
/*
* Check to see if an object reference is an instance of a class.
*
* Most common situation is a non-null object, being compared against
* an already-resolved class.
*/
/* instance-of vA, vB, class@CCCC */
EXPORT_PC
movzwl 2(rPC), %eax # eax <- BBBB
movl %eax, OUT_ARG0(%esp)
movl rINST, %eax # eax <- BA
sarl $$4, %eax # eax <- B
leal VREG_ADDRESS(%eax), %ecx # Get object address
movl %ecx, OUT_ARG1(%esp)
movl OFF_FP_METHOD(rFP),%eax
movl %eax, OUT_ARG2(%esp)
movl rSELF, %ecx
movl %ecx, OUT_ARG3(%esp)
call SYMBOL(MterpInstanceOf) # (index, &obj, method, self)
movl rSELF, %ecx
RESTORE_IBASE_FROM_SELF %ecx
cmpl $$0, THREAD_EXCEPTION_OFFSET(%ecx)
jnz MterpException
andb $$0xf, rINSTbl # rINSTbl <- A
SET_VREG %eax, rINST
ADVANCE_PC_FETCH_AND_GOTO_NEXT 2
%def op_iput(is_object="0", helper="MterpIPutU32"):
% field(helper=helper)
%def op_iput_boolean():
% op_iput(helper="MterpIPutU8")
%def op_iput_byte():
% op_iput(helper="MterpIPutI8")
%def op_iput_char():
% op_iput(helper="MterpIPutU16")
%def op_iput_object():
% op_iput(is_object="1", helper="MterpIPutObj")
%def op_iput_short():
% op_iput(helper="MterpIPutI16")
%def op_iput_wide():
% op_iput(helper="MterpIPutU64")
%def op_new_instance():
/*
* Create a new instance of a class.
*/
/* new-instance vAA, class@BBBB */
EXPORT_PC
leal OFF_FP_SHADOWFRAME(rFP), %eax
movl %eax, OUT_ARG0(%esp)
movl rSELF, %ecx
movl %ecx, OUT_ARG1(%esp)
REFRESH_INST ${opnum}
movl rINST, OUT_ARG2(%esp)
call SYMBOL(MterpNewInstance)
RESTORE_IBASE
testb %al, %al # 0 means an exception is thrown
jz MterpPossibleException
ADVANCE_PC_FETCH_AND_GOTO_NEXT 2
%def op_sget(is_object="0", helper="MterpSGetU32"):
% field(helper=helper)
%def op_sget_boolean():
% op_sget(helper="MterpSGetU8")
%def op_sget_byte():
% op_sget(helper="MterpSGetI8")
%def op_sget_char():
% op_sget(helper="MterpSGetU16")
%def op_sget_object():
% op_sget(is_object="1", helper="MterpSGetObj")
%def op_sget_short():
% op_sget(helper="MterpSGetI16")
%def op_sget_wide():
% op_sget(helper="MterpSGetU64")
%def op_sput(is_object="0", helper="MterpSPutU32"):
% field(helper=helper)
%def op_sput_boolean():
% op_sput(helper="MterpSPutU8")
%def op_sput_byte():
% op_sput(helper="MterpSPutI8")
%def op_sput_char():
% op_sput(helper="MterpSPutU16")
%def op_sput_object():
% op_sput(is_object="1", helper="MterpSPutObj")
%def op_sput_short():
% op_sput(helper="MterpSPutI16")
%def op_sput_wide():
% op_sput(helper="MterpSPutU64")
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