/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "asm_support_x86.S"
/*
* Macro that sets up the callee save frame to conform with
* Runtime::CreateCalleeSaveMethod(kSaveAll)
*/
MACRO0(SETUP_SAVE_ALL_CALLEE_SAVE_FRAME)
PUSH edi // Save callee saves (ebx is saved/restored by the upcall)
PUSH esi
PUSH ebp
subl MACRO_LITERAL(16), %esp // Grow stack by 4 words, bottom word will hold Method*
.cfi_adjust_cfa_offset 16
END_MACRO
/*
* Macro that sets up the callee save frame to conform with
* Runtime::CreateCalleeSaveMethod(kRefsOnly)
*/
MACRO0(SETUP_REF_ONLY_CALLEE_SAVE_FRAME)
PUSH edi // Save callee saves (ebx is saved/restored by the upcall)
PUSH esi
PUSH ebp
subl MACRO_LITERAL(16), %esp // Grow stack by 4 words, bottom word will hold Method*
.cfi_adjust_cfa_offset 16
END_MACRO
MACRO0(RESTORE_REF_ONLY_CALLEE_SAVE_FRAME)
addl MACRO_LITERAL(28), %esp // Unwind stack up to return address
.cfi_adjust_cfa_offset -28
END_MACRO
/*
* Macro that sets up the callee save frame to conform with
* Runtime::CreateCalleeSaveMethod(kRefsAndArgs)
*/
MACRO0(SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME)
PUSH edi // Save callee saves
PUSH esi
PUSH ebp
PUSH ebx // Save args
PUSH edx
PUSH ecx
PUSH eax // Align stack, eax will be clobbered by Method*
END_MACRO
MACRO0(RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME)
addl MACRO_LITERAL(4), %esp // Remove padding
.cfi_adjust_cfa_offset -4
POP ecx // Restore args except eax
POP edx
POP ebx
POP ebp // Restore callee saves
POP esi
POP edi
END_MACRO
/*
* Macro that set calls through to artDeliverPendingExceptionFromCode, where the pending
* exception is Thread::Current()->exception_.
*/
MACRO0(DELIVER_PENDING_EXCEPTION)
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save callee saves for throw
mov %esp, %ecx
// Outgoing argument set up
subl MACRO_LITERAL(8), %esp // Alignment padding
.cfi_adjust_cfa_offset 8
PUSH ecx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
call SYMBOL(artDeliverPendingExceptionFromCode) // artDeliverPendingExceptionFromCode(Thread*, SP)
int3 // unreached
END_MACRO
MACRO2(NO_ARG_RUNTIME_EXCEPTION, c_name, cxx_name)
DEFINE_FUNCTION VAR(c_name, 0)
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context
mov %esp, %ecx
// Outgoing argument set up
subl MACRO_LITERAL(8), %esp // alignment padding
.cfi_adjust_cfa_offset 8
PUSH ecx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
call VAR(cxx_name, 1) // cxx_name(Thread*, SP)
int3 // unreached
END_FUNCTION VAR(c_name, 0)
END_MACRO
MACRO2(ONE_ARG_RUNTIME_EXCEPTION, c_name, cxx_name)
DEFINE_FUNCTION VAR(c_name, 0)
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context
mov %esp, %ecx
// Outgoing argument set up
PUSH eax // alignment padding
PUSH ecx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH eax // pass arg1
call VAR(cxx_name, 1) // cxx_name(arg1, Thread*, SP)
int3 // unreached
END_FUNCTION VAR(c_name, 0)
END_MACRO
MACRO2(TWO_ARG_RUNTIME_EXCEPTION, c_name, cxx_name)
DEFINE_FUNCTION VAR(c_name, 0)
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context
mov %esp, %edx
// Outgoing argument set up
PUSH edx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH ecx // pass arg2
PUSH eax // pass arg1
call VAR(cxx_name, 1) // cxx_name(arg1, arg2, Thread*, SP)
int3 // unreached
END_FUNCTION VAR(c_name, 0)
END_MACRO
/*
* Called by managed code to create and deliver a NullPointerException.
*/
NO_ARG_RUNTIME_EXCEPTION art_quick_throw_null_pointer_exception, artThrowNullPointerExceptionFromCode
/*
* Called by managed code to create and deliver an ArithmeticException.
*/
NO_ARG_RUNTIME_EXCEPTION art_quick_throw_div_zero, artThrowDivZeroFromCode
/*
* Called by managed code to create and deliver a StackOverflowError.
*/
NO_ARG_RUNTIME_EXCEPTION art_quick_throw_stack_overflow, artThrowStackOverflowFromCode
/*
* Called by managed code, saves callee saves and then calls artThrowException
* that will place a mock Method* at the bottom of the stack. Arg1 holds the exception.
*/
ONE_ARG_RUNTIME_EXCEPTION art_quick_deliver_exception, artDeliverExceptionFromCode
/*
* Called by managed code to create and deliver a NoSuchMethodError.
*/
ONE_ARG_RUNTIME_EXCEPTION art_quick_throw_no_such_method, artThrowNoSuchMethodFromCode
/*
* Called by managed code to create and deliver an ArrayIndexOutOfBoundsException. Arg1 holds
* index, arg2 holds limit.
*/
TWO_ARG_RUNTIME_EXCEPTION art_quick_throw_array_bounds, artThrowArrayBoundsFromCode
/*
* All generated callsites for interface invokes and invocation slow paths will load arguments
* as usual - except instead of loading arg0/r0 with the target Method*, arg0/r0 will contain
* the method_idx. This wrapper will save arg1-arg3, load the caller's Method*, align the
* stack and call the appropriate C helper.
* NOTE: "this" is first visible argument of the target, and so can be found in arg1/r1.
*
* The helper will attempt to locate the target and return a 64-bit result in r0/r1 consisting
* of the target Method* in r0 and method->code_ in r1.
*
* If unsuccessful, the helper will return NULL/NULL. There will bea pending exception in the
* thread and we branch to another stub to deliver it.
*
* On success this wrapper will restore arguments and *jump* to the target, leaving the lr
* pointing back to the original caller.
*/
MACRO2(INVOKE_TRAMPOLINE, c_name, cxx_name)
DEFINE_FUNCTION VAR(c_name, 0)
// Set up the callee save frame to conform with Runtime::CreateCalleeSaveMethod(kRefsAndArgs)
// return address
PUSH edi
PUSH esi
PUSH ebp
PUSH ebx
PUSH edx
PUSH ecx
PUSH eax // <-- callee save Method* to go here
movl %esp, %edx // remember SP
// Outgoing argument set up
subl MACRO_LITERAL(12), %esp // alignment padding
.cfi_adjust_cfa_offset 12
PUSH edx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
pushl 32(%edx) // pass caller Method*
.cfi_adjust_cfa_offset 4
PUSH ecx // pass arg2
PUSH eax // pass arg1
call VAR(cxx_name, 1) // cxx_name(arg1, arg2, arg3, Thread*, SP)
movl %edx, %edi // save code pointer in EDI
addl MACRO_LITERAL(36), %esp // Pop arguments skip eax
.cfi_adjust_cfa_offset -36
POP ecx // Restore args
POP edx
POP ebx
POP ebp // Restore callee saves.
POP esi
// Swap EDI callee save with code pointer.
xchgl %edi, (%esp)
testl %eax, %eax // Branch forward if exception pending.
jz 1f
// Tail call to intended method.
ret
1:
addl MACRO_LITERAL(4), %esp // Pop code pointer off stack
.cfi_adjust_cfa_offset -4
DELIVER_PENDING_EXCEPTION
END_FUNCTION VAR(c_name, 0)
END_MACRO
INVOKE_TRAMPOLINE art_quick_invoke_interface_trampoline, artInvokeInterfaceTrampoline
INVOKE_TRAMPOLINE art_quick_invoke_interface_trampoline_with_access_check, artInvokeInterfaceTrampolineWithAccessCheck
INVOKE_TRAMPOLINE art_quick_invoke_static_trampoline_with_access_check, artInvokeStaticTrampolineWithAccessCheck
INVOKE_TRAMPOLINE art_quick_invoke_direct_trampoline_with_access_check, artInvokeDirectTrampolineWithAccessCheck
INVOKE_TRAMPOLINE art_quick_invoke_super_trampoline_with_access_check, artInvokeSuperTrampolineWithAccessCheck
INVOKE_TRAMPOLINE art_quick_invoke_virtual_trampoline_with_access_check, artInvokeVirtualTrampolineWithAccessCheck
/*
* Quick invocation stub.
* On entry:
* [sp] = return address
* [sp + 4] = method pointer
* [sp + 8] = argument array or NULL for no argument methods
* [sp + 12] = size of argument array in bytes
* [sp + 16] = (managed) thread pointer
* [sp + 20] = JValue* result
* [sp + 24] = result type char
*/
DEFINE_FUNCTION art_quick_invoke_stub
PUSH ebp // save ebp
PUSH ebx // save ebx
mov %esp, %ebp // copy value of stack pointer into base pointer
.cfi_def_cfa_register ebp
mov 20(%ebp), %ebx // get arg array size
addl LITERAL(28), %ebx // reserve space for return addr, method*, ebx, and ebp in frame
andl LITERAL(0xFFFFFFF0), %ebx // align frame size to 16 bytes
subl LITERAL(12), %ebx // remove space for return address, ebx, and ebp
subl %ebx, %esp // reserve stack space for argument array
lea 4(%esp), %eax // use stack pointer + method ptr as dest for memcpy
pushl 20(%ebp) // push size of region to memcpy
pushl 16(%ebp) // push arg array as source of memcpy
pushl %eax // push stack pointer as destination of memcpy
call SYMBOL(memcpy) // (void*, const void*, size_t)
addl LITERAL(12), %esp // pop arguments to memcpy
movl LITERAL(0), (%esp) // store NULL for method*
mov 12(%ebp), %eax // move method pointer into eax
mov 4(%esp), %ecx // copy arg1 into ecx
mov 8(%esp), %edx // copy arg2 into edx
mov 12(%esp), %ebx // copy arg3 into ebx
call *METHOD_CODE_OFFSET(%eax) // call the method
mov %ebp, %esp // restore stack pointer
POP ebx // pop ebx
POP ebp // pop ebp
mov 20(%esp), %ecx // get result pointer
cmpl LITERAL(68), 24(%esp) // test if result type char == 'D'
je return_double_quick
cmpl LITERAL(70), 24(%esp) // test if result type char == 'F'
je return_float_quick
mov %eax, (%ecx) // store the result
mov %edx, 4(%ecx) // store the other half of the result
ret
return_double_quick:
return_float_quick:
movsd %xmm0, (%ecx) // store the floating point result
ret
END_FUNCTION art_quick_invoke_stub
MACRO3(NO_ARG_DOWNCALL, c_name, cxx_name, return_macro)
DEFINE_FUNCTION VAR(c_name, 0)
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
mov %esp, %edx // remember SP
// Outgoing argument set up
subl MACRO_LITERAL(8), %esp // push padding
.cfi_adjust_cfa_offset 8
PUSH edx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
call VAR(cxx_name, 1) // cxx_name(Thread*, SP)
addl MACRO_LITERAL(16), %esp // pop arguments
.cfi_adjust_cfa_offset -16
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
CALL_MACRO(return_macro, 2) // return or deliver exception
END_FUNCTION VAR(c_name, 0)
END_MACRO
MACRO3(ONE_ARG_DOWNCALL, c_name, cxx_name, return_macro)
DEFINE_FUNCTION VAR(c_name, 0)
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
mov %esp, %edx // remember SP
// Outgoing argument set up
PUSH eax // push padding
PUSH edx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH eax // pass arg1
call VAR(cxx_name, 1) // cxx_name(arg1, Thread*, SP)
addl MACRO_LITERAL(16), %esp // pop arguments
.cfi_adjust_cfa_offset -16
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
CALL_MACRO(return_macro, 2) // return or deliver exception
END_FUNCTION VAR(c_name, 0)
END_MACRO
MACRO3(TWO_ARG_DOWNCALL, c_name, cxx_name, return_macro)
DEFINE_FUNCTION VAR(c_name, 0)
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
mov %esp, %edx // remember SP
// Outgoing argument set up
PUSH edx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH ecx // pass arg2
PUSH eax // pass arg1
call VAR(cxx_name, 1) // cxx_name(arg1, arg2, Thread*, SP)
addl MACRO_LITERAL(16), %esp // pop arguments
.cfi_adjust_cfa_offset -16
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
CALL_MACRO(return_macro, 2) // return or deliver exception
END_FUNCTION VAR(c_name, 0)
END_MACRO
MACRO3(THREE_ARG_DOWNCALL, c_name, cxx_name, return_macro)
DEFINE_FUNCTION VAR(c_name, 0)
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
mov %esp, %ebx // remember SP
// Outgoing argument set up
subl MACRO_LITERAL(12), %esp // alignment padding
.cfi_adjust_cfa_offset 12
PUSH ebx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH edx // pass arg3
PUSH ecx // pass arg2
PUSH eax // pass arg1
call VAR(cxx_name, 1) // cxx_name(arg1, arg2, arg3, Thread*, SP)
addl MACRO_LITERAL(32), %esp // pop arguments
.cfi_adjust_cfa_offset -32
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
CALL_MACRO(return_macro, 2) // return or deliver exception
END_FUNCTION VAR(c_name, 0)
END_MACRO
MACRO0(RETURN_IF_EAX_NOT_ZERO)
testl %eax, %eax // eax == 0 ?
jz 1f // if eax == 0 goto 1
ret // return
1: // deliver exception on current thread
DELIVER_PENDING_EXCEPTION
END_MACRO
MACRO0(RETURN_IF_EAX_ZERO)
testl %eax, %eax // eax == 0 ?
jnz 1f // if eax != 0 goto 1
ret // return
1: // deliver exception on current thread
DELIVER_PENDING_EXCEPTION
END_MACRO
MACRO0(RETURN_OR_DELIVER_PENDING_EXCEPTION)
mov %fs:THREAD_EXCEPTION_OFFSET, %ebx // get exception field
testl %ebx, %ebx // ebx == 0 ?
jnz 1f // if ebx != 0 goto 1
ret // return
1: // deliver exception on current thread
DELIVER_PENDING_EXCEPTION
END_MACRO
TWO_ARG_DOWNCALL art_quick_alloc_object, artAllocObjectFromCode, RETURN_IF_EAX_NOT_ZERO
TWO_ARG_DOWNCALL art_quick_alloc_object_with_access_check, artAllocObjectFromCodeWithAccessCheck, RETURN_IF_EAX_NOT_ZERO
THREE_ARG_DOWNCALL art_quick_alloc_array, artAllocArrayFromCode, RETURN_IF_EAX_NOT_ZERO
THREE_ARG_DOWNCALL art_quick_alloc_array_with_access_check, artAllocArrayFromCodeWithAccessCheck, RETURN_IF_EAX_NOT_ZERO
THREE_ARG_DOWNCALL art_quick_check_and_alloc_array, artCheckAndAllocArrayFromCode, RETURN_IF_EAX_NOT_ZERO
THREE_ARG_DOWNCALL art_quick_check_and_alloc_array_with_access_check, artCheckAndAllocArrayFromCodeWithAccessCheck, RETURN_IF_EAX_NOT_ZERO
TWO_ARG_DOWNCALL art_quick_resolve_string, artResolveStringFromCode, RETURN_IF_EAX_NOT_ZERO
TWO_ARG_DOWNCALL art_quick_initialize_static_storage, artInitializeStaticStorageFromCode, RETURN_IF_EAX_NOT_ZERO
TWO_ARG_DOWNCALL art_quick_initialize_type, artInitializeTypeFromCode, RETURN_IF_EAX_NOT_ZERO
TWO_ARG_DOWNCALL art_quick_initialize_type_and_verify_access, artInitializeTypeAndVerifyAccessFromCode, RETURN_IF_EAX_NOT_ZERO
ONE_ARG_DOWNCALL art_quick_lock_object, artLockObjectFromCode, ret
ONE_ARG_DOWNCALL art_quick_unlock_object, artUnlockObjectFromCode, RETURN_IF_EAX_ZERO
TWO_ARG_DOWNCALL art_quick_handle_fill_data, artHandleFillArrayDataFromCode, RETURN_IF_EAX_ZERO
DEFINE_FUNCTION art_quick_is_assignable
PUSH eax // alignment padding
PUSH ecx // pass arg2
PUSH eax // pass arg1
call SYMBOL(artIsAssignableFromCode) // (Class* a, Class* b, Thread*, SP)
addl LITERAL(12), %esp // pop arguments
.cfi_adjust_cfa_offset -12
ret
END_FUNCTION art_quick_is_assignable
DEFINE_FUNCTION art_quick_memcpy
PUSH edx // pass arg3
PUSH ecx // pass arg2
PUSH eax // pass arg1
call SYMBOL(memcpy) // (void*, const void*, size_t)
addl LITERAL(12), %esp // pop arguments
.cfi_adjust_cfa_offset -12
ret
END_FUNCTION art_quick_memcpy
TWO_ARG_DOWNCALL art_quick_check_cast, artCheckCastFromCode, RETURN_IF_EAX_ZERO
TWO_ARG_DOWNCALL art_quick_can_put_array_element, artCanPutArrayElementFromCode, RETURN_IF_EAX_ZERO
NO_ARG_DOWNCALL art_quick_test_suspend, artTestSuspendFromCode, ret
DEFINE_FUNCTION art_quick_fmod
subl LITERAL(12), %esp // alignment padding
.cfi_adjust_cfa_offset 12
PUSH ebx // pass arg4 b.hi
PUSH edx // pass arg3 b.lo
PUSH ecx // pass arg2 a.hi
PUSH eax // pass arg1 a.lo
call SYMBOL(fmod) // (jdouble a, jdouble b)
fstpl (%esp) // pop return value off fp stack
movsd (%esp), %xmm0 // place into %xmm0
addl LITERAL(28), %esp // pop arguments
.cfi_adjust_cfa_offset -28
ret
END_FUNCTION art_quick_fmod
DEFINE_FUNCTION art_quick_fmodf
PUSH eax // alignment padding
PUSH ecx // pass arg2 b
PUSH eax // pass arg1 a
call SYMBOL(fmodf) // (jfloat a, jfloat b)
fstps (%esp) // pop return value off fp stack
movss (%esp), %xmm0 // place into %xmm0
addl LITERAL(12), %esp // pop arguments
.cfi_adjust_cfa_offset -12
ret
END_FUNCTION art_quick_fmodf
DEFINE_FUNCTION art_quick_l2d
PUSH ecx // push arg2 a.hi
PUSH eax // push arg1 a.lo
fildll (%esp) // load as integer and push into st0
fstpl (%esp) // pop value off fp stack as double
movsd (%esp), %xmm0 // place into %xmm0
addl LITERAL(8), %esp // pop arguments
.cfi_adjust_cfa_offset -8
ret
END_FUNCTION art_quick_l2d
DEFINE_FUNCTION art_quick_l2f
PUSH ecx // push arg2 a.hi
PUSH eax // push arg1 a.lo
fildll (%esp) // load as integer and push into st0
fstps (%esp) // pop value off fp stack as a single
movss (%esp), %xmm0 // place into %xmm0
addl LITERAL(8), %esp // pop argument
.cfi_adjust_cfa_offset -8
ret
END_FUNCTION art_quick_l2f
DEFINE_FUNCTION art_quick_d2l
PUSH eax // alignment padding
PUSH ecx // pass arg2 a.hi
PUSH eax // pass arg1 a.lo
call SYMBOL(art_d2l) // (jdouble a)
addl LITERAL(12), %esp // pop arguments
.cfi_adjust_cfa_offset -12
ret
END_FUNCTION art_quick_d2l
DEFINE_FUNCTION art_quick_f2l
subl LITERAL(8), %esp // alignment padding
.cfi_adjust_cfa_offset 8
PUSH eax // pass arg1 a
call SYMBOL(art_f2l) // (jfloat a)
addl LITERAL(12), %esp // pop arguments
.cfi_adjust_cfa_offset -12
ret
END_FUNCTION art_quick_f2l
DEFINE_FUNCTION art_quick_idivmod
cmpl LITERAL(0x80000000), %eax
je check_arg2 // special case
args_ok:
cdq // edx:eax = sign extend eax
idiv %ecx // (edx,eax) = (edx:eax % ecx, edx:eax / ecx)
ret
check_arg2:
cmpl LITERAL(-1), %ecx
jne args_ok
xorl %edx, %edx
ret // eax already holds min int
END_FUNCTION art_quick_idivmod
DEFINE_FUNCTION art_quick_ldiv
subl LITERAL(12), %esp // alignment padding
.cfi_adjust_cfa_offset 12
PUSH ebx // pass arg4 b.hi
PUSH edx // pass arg3 b.lo
PUSH ecx // pass arg2 a.hi
PUSH eax // pass arg1 a.lo
call SYMBOL(artLdivFromCode) // (jlong a, jlong b)
addl LITERAL(28), %esp // pop arguments
.cfi_adjust_cfa_offset -28
ret
END_FUNCTION art_quick_ldiv
DEFINE_FUNCTION art_quick_ldivmod
subl LITERAL(12), %esp // alignment padding
.cfi_adjust_cfa_offset 12
PUSH ebx // pass arg4 b.hi
PUSH edx // pass arg3 b.lo
PUSH ecx // pass arg2 a.hi
PUSH eax // pass arg1 a.lo
call SYMBOL(artLdivmodFromCode) // (jlong a, jlong b)
addl LITERAL(28), %esp // pop arguments
.cfi_adjust_cfa_offset -28
ret
END_FUNCTION art_quick_ldivmod
DEFINE_FUNCTION art_quick_lmul
imul %eax, %ebx // ebx = a.lo(eax) * b.hi(ebx)
imul %edx, %ecx // ecx = b.lo(edx) * a.hi(ecx)
mul %edx // edx:eax = a.lo(eax) * b.lo(edx)
add %ebx, %ecx
add %ecx, %edx // edx += (a.lo * b.hi) + (b.lo * a.hi)
ret
END_FUNCTION art_quick_lmul
DEFINE_FUNCTION art_quick_lshl
// ecx:eax << edx
xchg %edx, %ecx
shld %cl,%eax,%edx
shl %cl,%eax
test LITERAL(32), %cl
jz 1f
mov %eax, %edx
xor %eax, %eax
1:
ret
END_FUNCTION art_quick_lshl
DEFINE_FUNCTION art_quick_lshr
// ecx:eax >> edx
xchg %edx, %ecx
shrd %cl,%edx,%eax
sar %cl,%edx
test LITERAL(32),%cl
jz 1f
mov %edx, %eax
sar LITERAL(31), %edx
1:
ret
END_FUNCTION art_quick_lshr
DEFINE_FUNCTION art_quick_lushr
// ecx:eax >>> edx
xchg %edx, %ecx
shrd %cl,%edx,%eax
shr %cl,%edx
test LITERAL(32),%cl
jz 1f
mov %edx, %eax
xor %edx, %edx
1:
ret
END_FUNCTION art_quick_lushr
DEFINE_FUNCTION art_quick_set32_instance
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
mov %esp, %ebx // remember SP
subl LITERAL(8), %esp // alignment padding
.cfi_adjust_cfa_offset 8
PUSH ebx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
mov 32(%ebx), %ebx // get referrer
PUSH ebx // pass referrer
PUSH edx // pass new_val
PUSH ecx // pass object
PUSH eax // pass field_idx
call SYMBOL(artSet32InstanceFromCode) // (field_idx, Object*, new_val, referrer, Thread*, SP)
addl LITERAL(32), %esp // pop arguments
.cfi_adjust_cfa_offset -32
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
RETURN_IF_EAX_ZERO // return or deliver exception
END_FUNCTION art_quick_set32_instance
DEFINE_FUNCTION art_quick_set64_instance
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
subl LITERAL(8), %esp // alignment padding
.cfi_adjust_cfa_offset 8
PUSH esp // pass SP-8
addl LITERAL(8), (%esp) // fix SP on stack by adding 8
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH ebx // pass high half of new_val
PUSH edx // pass low half of new_val
PUSH ecx // pass object
PUSH eax // pass field_idx
call SYMBOL(artSet64InstanceFromCode) // (field_idx, Object*, new_val, Thread*, SP)
addl LITERAL(32), %esp // pop arguments
.cfi_adjust_cfa_offset -32
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
RETURN_IF_EAX_ZERO // return or deliver exception
END_FUNCTION art_quick_set64_instance
DEFINE_FUNCTION art_quick_set_obj_instance
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
mov %esp, %ebx // remember SP
subl LITERAL(8), %esp // alignment padding
.cfi_adjust_cfa_offset 8
PUSH ebx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
mov 32(%ebx), %ebx // get referrer
PUSH ebx // pass referrer
PUSH edx // pass new_val
PUSH ecx // pass object
PUSH eax // pass field_idx
call SYMBOL(artSetObjInstanceFromCode) // (field_idx, Object*, new_val, referrer, Thread*, SP)
addl LITERAL(32), %esp // pop arguments
.cfi_adjust_cfa_offset -32
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
RETURN_IF_EAX_ZERO // return or deliver exception
END_FUNCTION art_quick_set_obj_instance
DEFINE_FUNCTION art_quick_get32_instance
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
mov %esp, %ebx // remember SP
mov 32(%esp), %edx // get referrer
subl LITERAL(12), %esp // alignment padding
.cfi_adjust_cfa_offset 12
PUSH ebx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH edx // pass referrer
PUSH ecx // pass object
PUSH eax // pass field_idx
call SYMBOL(artGet32InstanceFromCode) // (field_idx, Object*, referrer, Thread*, SP)
addl LITERAL(32), %esp // pop arguments
.cfi_adjust_cfa_offset -32
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception
END_FUNCTION art_quick_get32_instance
DEFINE_FUNCTION art_quick_get64_instance
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
mov %esp, %ebx // remember SP
mov 32(%esp), %edx // get referrer
subl LITERAL(12), %esp // alignment padding
.cfi_adjust_cfa_offset 12
PUSH ebx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH edx // pass referrer
PUSH ecx // pass object
PUSH eax // pass field_idx
call SYMBOL(artGet64InstanceFromCode) // (field_idx, Object*, referrer, Thread*, SP)
addl LITERAL(32), %esp // pop arguments
.cfi_adjust_cfa_offset -32
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception
END_FUNCTION art_quick_get64_instance
DEFINE_FUNCTION art_quick_get_obj_instance
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
mov %esp, %ebx // remember SP
mov 32(%esp), %edx // get referrer
subl LITERAL(12), %esp // alignment padding
.cfi_adjust_cfa_offset 12
PUSH ebx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH edx // pass referrer
PUSH ecx // pass object
PUSH eax // pass field_idx
call SYMBOL(artGetObjInstanceFromCode) // (field_idx, Object*, referrer, Thread*, SP)
addl LITERAL(32), %esp // pop arguments
.cfi_adjust_cfa_offset -32
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception
END_FUNCTION art_quick_get_obj_instance
DEFINE_FUNCTION art_quick_set32_static
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
mov %esp, %ebx // remember SP
mov 32(%esp), %edx // get referrer
subl LITERAL(12), %esp // alignment padding
.cfi_adjust_cfa_offset 12
PUSH ebx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH edx // pass referrer
PUSH ecx // pass new_val
PUSH eax // pass field_idx
call SYMBOL(artSet32StaticFromCode) // (field_idx, new_val, referrer, Thread*, SP)
addl LITERAL(32), %esp // pop arguments
.cfi_adjust_cfa_offset -32
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
RETURN_IF_EAX_ZERO // return or deliver exception
END_FUNCTION art_quick_set32_static
DEFINE_FUNCTION art_quick_set64_static
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
mov %esp, %ebx // remember SP
subl LITERAL(8), %esp // alignment padding
.cfi_adjust_cfa_offset 8
PUSH ebx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
mov 32(%ebx), %ebx // get referrer
PUSH edx // pass high half of new_val
PUSH ecx // pass low half of new_val
PUSH ebx // pass referrer
PUSH eax // pass field_idx
call SYMBOL(artSet64StaticFromCode) // (field_idx, referrer, new_val, Thread*, SP)
addl LITERAL(32), %esp // pop arguments
.cfi_adjust_cfa_offset -32
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
RETURN_IF_EAX_ZERO // return or deliver exception
END_FUNCTION art_quick_set64_static
DEFINE_FUNCTION art_quick_set_obj_static
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
mov %esp, %ebx // remember SP
mov 32(%esp), %edx // get referrer
subl LITERAL(12), %esp // alignment padding
.cfi_adjust_cfa_offset 12
PUSH ebx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH edx // pass referrer
PUSH ecx // pass new_val
PUSH eax // pass field_idx
call SYMBOL(artSetObjStaticFromCode) // (field_idx, new_val, referrer, Thread*, SP)
addl LITERAL(32), %esp // pop arguments
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
RETURN_IF_EAX_ZERO // return or deliver exception
END_FUNCTION art_quick_set_obj_static
DEFINE_FUNCTION art_quick_get32_static
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
mov %esp, %edx // remember SP
mov 32(%esp), %ecx // get referrer
PUSH edx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH ecx // pass referrer
PUSH eax // pass field_idx
call SYMBOL(artGet32StaticFromCode) // (field_idx, referrer, Thread*, SP)
addl LITERAL(16), %esp // pop arguments
.cfi_adjust_cfa_offset -16
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception
END_FUNCTION art_quick_get32_static
DEFINE_FUNCTION art_quick_get64_static
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
mov %esp, %edx // remember SP
mov 32(%esp), %ecx // get referrer
PUSH edx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH ecx // pass referrer
PUSH eax // pass field_idx
call SYMBOL(artGet64StaticFromCode) // (field_idx, referrer, Thread*, SP)
addl LITERAL(16), %esp // pop arguments
.cfi_adjust_cfa_offset -16
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception
END_FUNCTION art_quick_get64_static
DEFINE_FUNCTION art_quick_get_obj_static
SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC
mov %esp, %edx // remember SP
mov 32(%esp), %ecx // get referrer
PUSH edx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH ecx // pass referrer
PUSH eax // pass field_idx
call SYMBOL(artGetObjStaticFromCode) // (field_idx, referrer, Thread*, SP)
addl LITERAL(16), %esp // pop arguments
.cfi_adjust_cfa_offset -16
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address
RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception
END_FUNCTION art_quick_get_obj_static
DEFINE_FUNCTION art_quick_proxy_invoke_handler
SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME // save frame and Method*
PUSH esp // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH ecx // pass receiver
PUSH eax // pass proxy method
call SYMBOL(artQuickProxyInvokeHandler) // (proxy method, receiver, Thread*, SP)
movd %eax, %xmm0 // place return value also into floating point return value
movd %edx, %xmm1
punpckldq %xmm1, %xmm0
addl LITERAL(44), %esp // pop arguments
.cfi_adjust_cfa_offset -44
RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception
END_FUNCTION art_quick_proxy_invoke_handler
DEFINE_FUNCTION art_quick_resolution_trampoline
SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME
PUSH esp // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH ecx // pass receiver
PUSH eax // pass method
call SYMBOL(artQuickResolutionTrampoline) // (Method* called, receiver, Thread*, SP)
movl %eax, %edi // remember code pointer in EDI
addl LITERAL(16), %esp // pop arguments
test %eax, %eax // if code pointer is NULL goto deliver pending exception
jz 1f
POP eax // called method
POP ecx // restore args
POP edx
POP ebx
POP ebp // restore callee saves except EDI
POP esi
xchgl 0(%esp),%edi // restore EDI and place code pointer as only value on stack
ret // tail call into method
1:
RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME
DELIVER_PENDING_EXCEPTION
END_FUNCTION art_quick_resolution_trampoline
DEFINE_FUNCTION art_quick_to_interpreter_bridge
SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME // save frame
mov %esp, %edx // remember SP
PUSH eax // alignment padding
PUSH edx // pass SP
pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current()
.cfi_adjust_cfa_offset 4
PUSH eax // pass method
call SYMBOL(artQuickToInterpreterBridge) // (method, Thread*, SP)
movd %eax, %xmm0 // place return value also into floating point return value
movd %edx, %xmm1
punpckldq %xmm1, %xmm0
addl LITERAL(44), %esp // pop arguments
.cfi_adjust_cfa_offset -44
RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception
END_FUNCTION art_quick_to_interpreter_bridge
/*
* Routine that intercepts method calls and returns.
*/
DEFINE_FUNCTION art_quick_instrumentation_entry
SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME
movl %esp, %edx // Save SP.
PUSH eax // Save eax which will be clobbered by the callee-save method.
subl LITERAL(8), %esp // Align stack.
.cfi_adjust_cfa_offset 8
pushl 40(%esp) // Pass LR.
.cfi_adjust_cfa_offset 4
PUSH edx // Pass SP.
pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current().
.cfi_adjust_cfa_offset 4
PUSH ecx // Pass receiver.
PUSH eax // Pass Method*.
call SYMBOL(artInstrumentationMethodEntryFromCode) // (Method*, Object*, Thread*, SP, LR)
addl LITERAL(28), %esp // Pop arguments upto saved Method*.
movl 28(%esp), %edi // Restore edi.
movl %eax, 28(%esp) // Place code* over edi, just under return pc.
movl LITERAL(SYMBOL(art_quick_instrumentation_exit)), 32(%esp)
// Place instrumentation exit as return pc.
movl (%esp), %eax // Restore eax.
movl 8(%esp), %ecx // Restore ecx.
movl 12(%esp), %edx // Restore edx.
movl 16(%esp), %ebx // Restore ebx.
movl 20(%esp), %ebp // Restore ebp.
movl 24(%esp), %esi // Restore esi.
addl LITERAL(28), %esp // Wind stack back upto code*.
ret // Call method (and pop).
END_FUNCTION art_quick_instrumentation_entry
DEFINE_FUNCTION art_quick_instrumentation_exit
pushl LITERAL(0) // Push a fake return PC as there will be none on the stack.
SETUP_REF_ONLY_CALLEE_SAVE_FRAME
mov %esp, %ecx // Remember SP
subl LITERAL(8), %esp // Save float return value.
.cfi_adjust_cfa_offset 8
movd %xmm0, (%esp)
PUSH edx // Save gpr return value.
PUSH eax
subl LITERAL(8), %esp // Align stack
movd %xmm0, (%esp)
subl LITERAL(8), %esp // Pass float return value.
.cfi_adjust_cfa_offset 8
movd %xmm0, (%esp)
PUSH edx // Pass gpr return value.
PUSH eax
PUSH ecx // Pass SP.
pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current.
.cfi_adjust_cfa_offset 4
call SYMBOL(artInstrumentationMethodExitFromCode) // (Thread*, SP, gpr_result, fpr_result)
mov %eax, %ecx // Move returned link register.
addl LITERAL(32), %esp // Pop arguments.
.cfi_adjust_cfa_offset -32
movl %edx, %ebx // Move returned link register for deopt
// (ebx is pretending to be our LR).
POP eax // Restore gpr return value.
POP edx
movd (%esp), %xmm0 // Restore fpr return value.
addl LITERAL(8), %esp
.cfi_adjust_cfa_offset -8
RESTORE_REF_ONLY_CALLEE_SAVE_FRAME
addl LITERAL(4), %esp // Remove fake return pc.
jmp *%ecx // Return.
END_FUNCTION art_quick_instrumentation_exit
/*
* Instrumentation has requested that we deoptimize into the interpreter. The deoptimization
* will long jump to the upcall with a special exception of -1.
*/
DEFINE_FUNCTION art_quick_deoptimize
pushl %ebx // Fake that we were called.
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME
mov %esp, %ecx // Remember SP.
subl LITERAL(8), %esp // Align stack.
.cfi_adjust_cfa_offset 8
PUSH ecx // Pass SP.
pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current().
.cfi_adjust_cfa_offset 4
call SYMBOL(artDeoptimize) // artDeoptimize(Thread*, SP)
int3 // Unreachable.
END_FUNCTION art_quick_deoptimize
/*
* String's indexOf.
*
* On entry:
* eax: string object (known non-null)
* ecx: char to match (known <= 0xFFFF)
* edx: Starting offset in string data
*/
DEFINE_FUNCTION art_quick_indexof
PUSH edi // push callee save reg
mov STRING_COUNT_OFFSET(%eax), %ebx
mov STRING_VALUE_OFFSET(%eax), %edi
mov STRING_OFFSET_OFFSET(%eax), %eax
testl %edx, %edx // check if start < 0
jl clamp_min
clamp_done:
cmpl %ebx, %edx // check if start >= count
jge not_found
lea STRING_DATA_OFFSET(%edi, %eax, 2), %edi // build a pointer to the start of string data
mov %edi, %eax // save a copy in eax to later compute result
lea (%edi, %edx, 2), %edi // build pointer to start of data to compare
subl %edx, %ebx // compute iteration count
/*
* At this point we have:
* eax: original start of string data
* ecx: char to compare
* ebx: length to compare
* edi: start of data to test
*/
mov %eax, %edx
mov %ecx, %eax // put char to match in %eax
mov %ebx, %ecx // put length to compare in %ecx
repne scasw // find %ax, starting at [%edi], up to length %ecx
jne not_found
subl %edx, %edi
sar LITERAL(1), %edi
decl %edi // index = ((curr_ptr - orig_ptr) / 2) - 1
mov %edi, %eax
POP edi // pop callee save reg
ret
.balign 16
not_found:
mov LITERAL(-1), %eax // return -1 (not found)
POP edi // pop callee save reg
ret
clamp_min:
xor %edx, %edx // clamp start to 0
jmp clamp_done
END_FUNCTION art_quick_indexof
/*
* String's compareTo.
*
* On entry:
* eax: this string object (known non-null)
* ecx: comp string object (known non-null)
*/
DEFINE_FUNCTION art_quick_string_compareto
PUSH esi // push callee save reg
PUSH edi // push callee save reg
mov STRING_COUNT_OFFSET(%eax), %edx
mov STRING_COUNT_OFFSET(%ecx), %ebx
mov STRING_VALUE_OFFSET(%eax), %esi
mov STRING_VALUE_OFFSET(%ecx), %edi
mov STRING_OFFSET_OFFSET(%eax), %eax
mov STRING_OFFSET_OFFSET(%ecx), %ecx
/* Build pointers to the start of string data */
lea STRING_DATA_OFFSET(%esi, %eax, 2), %esi
lea STRING_DATA_OFFSET(%edi, %ecx, 2), %edi
/* Calculate min length and count diff */
mov %edx, %ecx
mov %edx, %eax
subl %ebx, %eax
cmovg %ebx, %ecx
/*
* At this point we have:
* eax: value to return if first part of strings are equal
* ecx: minimum among the lengths of the two strings
* esi: pointer to this string data
* edi: pointer to comp string data
*/
repe cmpsw // find nonmatching chars in [%esi] and [%edi], up to length %ecx
jne not_equal
POP edi // pop callee save reg
POP esi // pop callee save reg
ret
.balign 16
not_equal:
movzwl -2(%esi), %eax // get last compared char from this string
movzwl -2(%edi), %ecx // get last compared char from comp string
subl %ecx, %eax // return the difference
POP edi // pop callee save reg
POP esi // pop callee save reg
ret
END_FUNCTION art_quick_string_compareto
// TODO: implement these!
UNIMPLEMENTED art_quick_memcmp16