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/*
* Copyright (C) 2014 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_mips64.S"
#include "arch/quick_alloc_entrypoints.S"
.set noreorder
.balign 16
/* Deliver the given exception */
.extern artDeliverExceptionFromCode
/* Deliver an exception pending on a thread */
.extern artDeliverPendingExceptionFromCode
/*
* Macro that sets up $gp and stores the previous $gp value to $t8.
* This macro modifies v1 and t8.
*/
.macro SETUP_GP
move $v1, $ra
bal 1f
nop
1:
.cpsetup $ra, $t8, 1b
move $ra, $v1
.endm
/*
* Macro that sets up the callee save frame to conform with
* Runtime::CreateCalleeSaveMethod(kSaveAll)
* callee-save: padding + $f24-$f31 + $s0-$s7 + $gp + $ra + $s8 = 19 total + 1x8 bytes padding
*/
.macro SETUP_SAVE_ALL_CALLEE_SAVE_FRAME
daddiu $sp, $sp, -160
.cfi_adjust_cfa_offset 160
// Ugly compile-time check, but we only have the preprocessor.
#if (FRAME_SIZE_SAVE_ALL_CALLEE_SAVE != 160)
#error "SAVE_ALL_CALLEE_SAVE_FRAME(MIPS64) size not as expected."
#endif
sd $ra, 152($sp)
.cfi_rel_offset 31, 152
sd $s8, 144($sp)
.cfi_rel_offset 30, 144
sd $t8, 136($sp) # t8 holds caller's gp, now save it to the stack.
.cfi_rel_offset 28, 136 # Value from gp is pushed, so set the cfi offset accordingly.
sd $s7, 128($sp)
.cfi_rel_offset 23, 128
sd $s6, 120($sp)
.cfi_rel_offset 22, 120
sd $s5, 112($sp)
.cfi_rel_offset 21, 112
sd $s4, 104($sp)
.cfi_rel_offset 20, 104
sd $s3, 96($sp)
.cfi_rel_offset 19, 96
sd $s2, 88($sp)
.cfi_rel_offset 18, 88
sd $s1, 80($sp)
.cfi_rel_offset 17, 80
sd $s0, 72($sp)
.cfi_rel_offset 16, 72
// FP callee-saves
s.d $f31, 64($sp)
s.d $f30, 56($sp)
s.d $f29, 48($sp)
s.d $f28, 40($sp)
s.d $f27, 32($sp)
s.d $f26, 24($sp)
s.d $f25, 16($sp)
s.d $f24, 8($sp)
# load appropriate callee-save-method
ld $t1, %got(_ZN3art7Runtime9instance_E)($gp)
ld $t1, 0($t1)
ld $t1, RUNTIME_SAVE_ALL_CALLEE_SAVE_FRAME_OFFSET($t1)
sd $t1, 0($sp) # Place ArtMethod* at bottom of stack.
sd $sp, THREAD_TOP_QUICK_FRAME_OFFSET(rSELF) # Place sp in Thread::Current()->top_quick_frame.
.endm
/*
* Macro that sets up the callee save frame to conform with
* Runtime::CreateCalleeSaveMethod(kRefsOnly). Restoration assumes
* non-moving GC.
* Does not include rSUSPEND or rSELF
* callee-save: padding + $s2-$s7 + $gp + $ra + $s8 = 9 total + 1x8 bytes padding
*/
.macro SETUP_REFS_ONLY_CALLEE_SAVE_FRAME
daddiu $sp, $sp, -80
.cfi_adjust_cfa_offset 80
// Ugly compile-time check, but we only have the preprocessor.
#if (FRAME_SIZE_REFS_ONLY_CALLEE_SAVE != 80)
#error "REFS_ONLY_CALLEE_SAVE_FRAME(MIPS64) size not as expected."
#endif
sd $ra, 72($sp)
.cfi_rel_offset 31, 72
sd $s8, 64($sp)
.cfi_rel_offset 30, 64
sd $t8, 56($sp) # t8 holds caller's gp, now save it to the stack.
.cfi_rel_offset 28, 56 # Value from gp is pushed, so set the cfi offset accordingly.
sd $s7, 48($sp)
.cfi_rel_offset 23, 48
sd $s6, 40($sp)
.cfi_rel_offset 22, 40
sd $s5, 32($sp)
.cfi_rel_offset 21, 32
sd $s4, 24($sp)
.cfi_rel_offset 20, 24
sd $s3, 16($sp)
.cfi_rel_offset 19, 16
sd $s2, 8($sp)
.cfi_rel_offset 18, 8
# load appropriate callee-save-method
ld $t1, %got(_ZN3art7Runtime9instance_E)($gp)
ld $t1, 0($t1)
ld $t1, RUNTIME_REFS_ONLY_CALLEE_SAVE_FRAME_OFFSET($t1)
sd $t1, 0($sp) # Place Method* at bottom of stack.
sd $sp, THREAD_TOP_QUICK_FRAME_OFFSET(rSELF) # Place sp in Thread::Current()->top_quick_frame.
.endm
.macro RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME
ld $ra, 72($sp)
.cfi_restore 31
ld $s8, 64($sp)
.cfi_restore 30
ld $t8, 56($sp) # Restore gp back to it's temp storage.
.cfi_restore 28
ld $s7, 48($sp)
.cfi_restore 23
ld $s6, 40($sp)
.cfi_restore 22
ld $s5, 32($sp)
.cfi_restore 21
ld $s4, 24($sp)
.cfi_restore 20
ld $s3, 16($sp)
.cfi_restore 19
ld $s2, 8($sp)
.cfi_restore 18
daddiu $sp, $sp, 80
.cfi_adjust_cfa_offset -80
.cpreturn
.endm
.macro RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME_AND_RETURN
ld $ra, 72($sp)
.cfi_restore 31
ld $s8, 64($sp)
.cfi_restore 30
ld $t8, 56($sp) # Restore gp back to it's temp storage.
.cfi_restore 28
ld $s7, 48($sp)
.cfi_restore 23
ld $s6, 40($sp)
.cfi_restore 22
ld $s5, 32($sp)
.cfi_restore 21
ld $s4, 24($sp)
.cfi_restore 20
ld $s3, 16($sp)
.cfi_restore 19
ld $s2, 8($sp)
.cfi_restore 18
.cpreturn
jalr $zero, $ra
daddiu $sp, $sp, 80
.cfi_adjust_cfa_offset -80
.endm
// This assumes the top part of these stack frame types are identical.
#define REFS_AND_ARGS_MINUS_REFS_SIZE (FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE - FRAME_SIZE_REFS_ONLY_CALLEE_SAVE)
.macro SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_INTERNAL
daddiu $sp, $sp, -208
.cfi_adjust_cfa_offset 208
// Ugly compile-time check, but we only have the preprocessor.
#if (FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE != 208)
#error "REFS_AND_ARGS_CALLEE_SAVE_FRAME(MIPS64) size not as expected."
#endif
sd $ra, 200($sp) # = kQuickCalleeSaveFrame_RefAndArgs_LrOffset
.cfi_rel_offset 31, 200
sd $s8, 192($sp)
.cfi_rel_offset 30, 192
sd $t8, 184($sp) # t8 holds caller's gp, now save it to the stack.
.cfi_rel_offset 28, 184 # Value from gp is pushed, so set the cfi offset accordingly.
sd $s7, 176($sp)
.cfi_rel_offset 23, 176
sd $s6, 168($sp)
.cfi_rel_offset 22, 168
sd $s5, 160($sp)
.cfi_rel_offset 21, 160
sd $s4, 152($sp)
.cfi_rel_offset 20, 152
sd $s3, 144($sp)
.cfi_rel_offset 19, 144
sd $s2, 136($sp)
.cfi_rel_offset 18, 136
sd $a7, 128($sp)
.cfi_rel_offset 11, 128
sd $a6, 120($sp)
.cfi_rel_offset 10, 120
sd $a5, 112($sp)
.cfi_rel_offset 9, 112
sd $a4, 104($sp)
.cfi_rel_offset 8, 104
sd $a3, 96($sp)
.cfi_rel_offset 7, 96
sd $a2, 88($sp)
.cfi_rel_offset 6, 88
sd $a1, 80($sp) # = kQuickCalleeSaveFrame_RefAndArgs_Gpr1Offset
.cfi_rel_offset 5, 80
s.d $f19, 72($sp)
s.d $f18, 64($sp)
s.d $f17, 56($sp)
s.d $f16, 48($sp)
s.d $f15, 40($sp)
s.d $f14, 32($sp)
s.d $f13, 24($sp) # = kQuickCalleeSaveFrame_RefAndArgs_Fpr1Offset
s.d $f12, 16($sp) # This isn't necessary to store.
# 1x8 bytes padding + Method*
.endm
/*
* Macro that sets up the callee save frame to conform with
* Runtime::CreateCalleeSaveMethod(kRefsAndArgs). Restoration assumes
* non-moving GC.
* callee-save: padding + $f12-$f19 + $a1-$a7 + $s2-$s7 + $gp + $ra + $s8 = 24 total + 1 words padding + Method*
*/
.macro SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME
SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_INTERNAL
# load appropriate callee-save-method
ld $t1, %got(_ZN3art7Runtime9instance_E)($gp)
ld $t1, 0($t1)
ld $t1, RUNTIME_REFS_AND_ARGS_CALLEE_SAVE_FRAME_OFFSET($t1)
sd $t1, 0($sp) # Place Method* at bottom of stack.
sd $sp, THREAD_TOP_QUICK_FRAME_OFFSET(rSELF) # Place sp in Thread::Current()->top_quick_frame.
.endm
.macro SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_WITH_METHOD_IN_A0
SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_INTERNAL
sd $a0, 0($sp) # Place Method* at bottom of stack.
sd $sp, THREAD_TOP_QUICK_FRAME_OFFSET(rSELF) # Place sp in Thread::Current()->top_quick_frame.
.endm
.macro RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME
ld $ra, 200($sp)
.cfi_restore 31
ld $s8, 192($sp)
.cfi_restore 30
ld $t8, 184($sp) # Restore gp back to it's temp storage.
.cfi_restore 28
ld $s7, 176($sp)
.cfi_restore 23
ld $s6, 168($sp)
.cfi_restore 22
ld $s5, 160($sp)
.cfi_restore 21
ld $s4, 152($sp)
.cfi_restore 20
ld $s3, 144($sp)
.cfi_restore 19
ld $s2, 136($sp)
.cfi_restore 18
ld $a7, 128($sp)
.cfi_restore 11
ld $a6, 120($sp)
.cfi_restore 10
ld $a5, 112($sp)
.cfi_restore 9
ld $a4, 104($sp)
.cfi_restore 8
ld $a3, 96($sp)
.cfi_restore 7
ld $a2, 88($sp)
.cfi_restore 6
ld $a1, 80($sp)
.cfi_restore 5
l.d $f19, 72($sp)
l.d $f18, 64($sp)
l.d $f17, 56($sp)
l.d $f16, 48($sp)
l.d $f15, 40($sp)
l.d $f14, 32($sp)
l.d $f13, 24($sp)
l.d $f12, 16($sp)
.cpreturn
daddiu $sp, $sp, 208
.cfi_adjust_cfa_offset -208
.endm
/*
* Macro that set calls through to artDeliverPendingExceptionFromCode,
* where the pending
* exception is Thread::Current()->exception_
*/
.macro DELIVER_PENDING_EXCEPTION
SETUP_GP
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME # save callee saves for throw
dla $t9, artDeliverPendingExceptionFromCode
jalr $zero, $t9 # artDeliverPendingExceptionFromCode(Thread*)
move $a0, rSELF # pass Thread::Current
.endm
.macro RETURN_IF_NO_EXCEPTION
ld $t0, THREAD_EXCEPTION_OFFSET(rSELF) # load Thread::Current()->exception_
RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME
bne $t0, $zero, 1f # success if no exception is pending
nop
jalr $zero, $ra
nop
1:
DELIVER_PENDING_EXCEPTION
.endm
.macro RETURN_IF_ZERO
RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME
bne $v0, $zero, 1f # success?
nop
jalr $zero, $ra # return on success
nop
1:
DELIVER_PENDING_EXCEPTION
.endm
.macro RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME
beq $v0, $zero, 1f # success?
nop
jalr $zero, $ra # return on success
nop
1:
DELIVER_PENDING_EXCEPTION
.endm
/*
* On stack replacement stub.
* On entry:
* a0 = stack to copy
* a1 = size of stack
* a2 = pc to call
* a3 = JValue* result
* a4 = shorty
* a5 = thread
*/
ENTRY art_quick_osr_stub
move $t0, $sp # save stack pointer
daddiu $t1, $sp, -112 # reserve stack space
dsrl $t1, $t1, 4 # enforce 16 byte stack alignment
dsll $sp, $t1, 4 # update stack pointer
// Save callee general purpose registers, SP, T8(GP), RA, A3, and A4 (8x14 bytes)
sd $ra, 104($sp)
.cfi_rel_offset 31, 104
sd $s8, 96($sp)
.cfi_rel_offset 30, 96
sd $t0, 88($sp) # save original stack pointer stored in t0
.cfi_rel_offset 29, 88
sd $t8, 80($sp) # t8 holds caller's gp, now save it to the stack.
.cfi_rel_offset 28, 80 # Value from gp is pushed, so set the cfi offset accordingly.
sd $s7, 72($sp)
.cfi_rel_offset 23, 72
sd $s6, 64($sp)
.cfi_rel_offset 22, 64
sd $s5, 56($sp)
.cfi_rel_offset 21, 56
sd $s4, 48($sp)
.cfi_rel_offset 20, 48
sd $s3, 40($sp)
.cfi_rel_offset 19, 40
sd $s2, 32($sp)
.cfi_rel_offset 18, 32
sd $s1, 24($sp)
.cfi_rel_offset 17, 24
sd $s0, 16($sp)
.cfi_rel_offset 16, 16
sd $a4, 8($sp)
.cfi_rel_offset 8, 8
sd $a3, 0($sp)
.cfi_rel_offset 7, 0
move rSELF, $a5 # Save managed thread pointer into rSELF
daddiu $sp, $sp, -16
jal .Losr_entry
sd $zero, 0($sp) # Store null for ArtMethod* at bottom of frame
daddiu $sp, $sp, 16
// Restore return value address and shorty address
ld $a4, 8($sp) # shorty address
.cfi_restore 8
ld $a3, 0($sp) # result value address
.cfi_restore 7
lbu $t1, 0($a4) # load return type
li $t2, 'D' # put char 'D' into t2
beq $t1, $t2, .Losr_fp_result # branch if result type char == 'D'
li $t2, 'F' # put char 'F' into t2
beq $t1, $t2, .Losr_fp_result # branch if result type char == 'F'
nop
b .Losr_exit
dsrl $v1, $v0, 32 # put high half of result in v1
.Losr_fp_result:
mfc1 $v0, $f0
mfhc1 $v1, $f0 # put high half of FP result in v1
.Losr_exit:
sw $v0, 0($a3) # store low half of result
sw $v1, 4($a3) # store high half of result
// Restore callee registers
ld $ra, 104($sp)
.cfi_restore 31
ld $s8, 96($sp)
.cfi_restore 30
ld $t0, 88($sp) # save SP into t0 for now
.cfi_restore 29
ld $t8, 80($sp) # Restore gp back to it's temp storage.
.cfi_restore 28
ld $s7, 72($sp)
.cfi_restore 23
ld $s6, 64($sp)
.cfi_restore 22
ld $s5, 56($sp)
.cfi_restore 21
ld $s4, 48($sp)
.cfi_restore 20
ld $s3, 40($sp)
.cfi_restore 19
ld $s2, 32($sp)
.cfi_restore 18
ld $s1, 24($sp)
.cfi_restore 17
ld $s0, 16($sp)
.cfi_restore 16
jalr $zero, $ra
move $sp, $t0
.Losr_entry:
dsubu $sp, $sp, $a1 # Reserve space for callee stack
daddiu $a1, $a1, -8
daddu $t0, $a1, $sp
sw $ra, 0($t0) # Store low half of RA per compiler ABI
dsrl $t1, $ra, 32
sw $t1, 4($t0) # Store high half of RA per compiler ABI
// Copy arguments into callee stack
// Use simple copy routine for now.
// 4 bytes per slot.
// a0 = source address
// a1 = args length in bytes (does not include 8 bytes for RA)
// sp = destination address
beqz $a1, .Losr_loop_exit
daddiu $a1, $a1, -4
daddu $t1, $a0, $a1
daddu $t2, $sp, $a1
.Losr_loop_entry:
lw $t0, 0($t1)
daddiu $t1, $t1, -4
sw $t0, 0($t2)
bne $sp, $t2, .Losr_loop_entry
daddiu $t2, $t2, -4
.Losr_loop_exit:
move $t9, $a2
jalr $zero, $t9 # Jump to the OSR entry point.
nop
END art_quick_osr_stub
/*
* On entry $a0 is uint32_t* gprs_ and $a1 is uint32_t* fprs_
* FIXME: just guessing about the shape of the jmpbuf. Where will pc be?
*/
ENTRY_NO_GP art_quick_do_long_jump
l.d $f0, 0($a1)
l.d $f1, 8($a1)
l.d $f2, 16($a1)
l.d $f3, 24($a1)
l.d $f4, 32($a1)
l.d $f5, 40($a1)
l.d $f6, 48($a1)
l.d $f7, 56($a1)
l.d $f8, 64($a1)
l.d $f9, 72($a1)
l.d $f10, 80($a1)
l.d $f11, 88($a1)
l.d $f12, 96($a1)
l.d $f13, 104($a1)
l.d $f14, 112($a1)
l.d $f15, 120($a1)
l.d $f16, 128($a1)
l.d $f17, 136($a1)
l.d $f18, 144($a1)
l.d $f19, 152($a1)
l.d $f20, 160($a1)
l.d $f21, 168($a1)
l.d $f22, 176($a1)
l.d $f23, 184($a1)
l.d $f24, 192($a1)
l.d $f25, 200($a1)
l.d $f26, 208($a1)
l.d $f27, 216($a1)
l.d $f28, 224($a1)
l.d $f29, 232($a1)
l.d $f30, 240($a1)
l.d $f31, 248($a1)
.set push
.set nomacro
.set noat
# no need to load zero
ld $at, 8($a0)
.set pop
ld $v0, 16($a0)
ld $v1, 24($a0)
# a0 has to be loaded last
ld $a1, 40($a0)
ld $a2, 48($a0)
ld $a3, 56($a0)
ld $a4, 64($a0)
ld $a5, 72($a0)
ld $a6, 80($a0)
ld $a7, 88($a0)
ld $t0, 96($a0)
ld $t1, 104($a0)
ld $t2, 112($a0)
ld $t3, 120($a0)
ld $s0, 128($a0)
ld $s1, 136($a0)
ld $s2, 144($a0)
ld $s3, 152($a0)
ld $s4, 160($a0)
ld $s5, 168($a0)
ld $s6, 176($a0)
ld $s7, 184($a0)
ld $t8, 192($a0)
ld $t9, 200($a0)
# no need to load k0, k1
ld $gp, 224($a0)
ld $sp, 232($a0)
ld $s8, 240($a0)
ld $ra, 248($a0)
ld $a0, 32($a0)
move $v0, $zero # clear result registers v0 and v1
jalr $zero, $t9 # do long jump (do not use ra, it must not be clobbered)
move $v1, $zero
END art_quick_do_long_jump
/*
* Called by managed code, saves most registers (forms basis of long jump
* context) and passes the bottom of the stack.
* artDeliverExceptionFromCode will place the callee save Method* at
* the bottom of the thread. On entry a0 holds Throwable*
*/
ENTRY art_quick_deliver_exception
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME
dla $t9, artDeliverExceptionFromCode
jalr $zero, $t9 # artDeliverExceptionFromCode(Throwable*, Thread*)
move $a1, rSELF # pass Thread::Current
END art_quick_deliver_exception
/*
* Called by managed code to create and deliver a NullPointerException
*/
.extern artThrowNullPointerExceptionFromCode
ENTRY art_quick_throw_null_pointer_exception
.Lart_quick_throw_null_pointer_exception_gp_set:
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME
dla $t9, artThrowNullPointerExceptionFromCode
jalr $zero, $t9 # artThrowNullPointerExceptionFromCode(Thread*)
move $a0, rSELF # pass Thread::Current
END art_quick_throw_null_pointer_exception
/*
* Called by managed code to create and deliver an ArithmeticException
*/
.extern artThrowDivZeroFromCode
ENTRY art_quick_throw_div_zero
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME
dla $t9, artThrowDivZeroFromCode
jalr $zero, $t9 # artThrowDivZeroFromCode(Thread*)
move $a0, rSELF # pass Thread::Current
END art_quick_throw_div_zero
/*
* Called by managed code to create and deliver an
* ArrayIndexOutOfBoundsException
*/
.extern artThrowArrayBoundsFromCode
ENTRY art_quick_throw_array_bounds
.Lart_quick_throw_array_bounds_gp_set:
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME
dla $t9, artThrowArrayBoundsFromCode
jalr $zero, $t9 # artThrowArrayBoundsFromCode(index, limit, Thread*)
move $a2, rSELF # pass Thread::Current
END art_quick_throw_array_bounds
/*
* Called by managed code to create and deliver a StackOverflowError.
*/
.extern artThrowStackOverflowFromCode
ENTRY art_quick_throw_stack_overflow
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME
dla $t9, artThrowStackOverflowFromCode
jalr $zero, $t9 # artThrowStackOverflowFromCode(Thread*)
move $a0, rSELF # pass Thread::Current
END art_quick_throw_stack_overflow
/*
* Called by managed code to create and deliver a NoSuchMethodError.
*/
.extern artThrowNoSuchMethodFromCode
ENTRY art_quick_throw_no_such_method
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME
dla $t9, artThrowNoSuchMethodFromCode
jalr $zero, $t9 # artThrowNoSuchMethodFromCode(method_idx, Thread*)
move $a1, rSELF # pass Thread::Current
END art_quick_throw_no_such_method
/*
* All generated callsites for interface invokes and invocation slow paths will load arguments
* as usual - except instead of loading arg0/$a0 with the target Method*, arg0/$a0 will contain
* the method_idx. This wrapper will save arg1-arg3, load the caller's Method*, align the
* stack and call the appropriate C helper.
* NOTE: "this" is first visable argument of the target, and so can be found in arg1/$a1.
*
* The helper will attempt to locate the target and return a 128-bit result in $v0/$v1 consisting
* of the target Method* in $v0 and method->code_ in $v1.
*
* If unsuccessful, the helper will return null/null. There will be a 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 ra
* pointing back to the original caller.
*/
.macro INVOKE_TRAMPOLINE_BODY cxx_name
.extern \cxx_name
SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME # save callee saves in case allocation triggers GC
move $a2, rSELF # pass Thread::Current
jal \cxx_name # (method_idx, this, Thread*, $sp)
move $a3, $sp # pass $sp
move $a0, $v0 # save target Method*
move $t9, $v1 # save $v0->code_
RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME
beq $v0, $zero, 1f
nop
jalr $zero, $t9
nop
1:
DELIVER_PENDING_EXCEPTION
.endm
.macro INVOKE_TRAMPOLINE c_name, cxx_name
ENTRY \c_name
INVOKE_TRAMPOLINE_BODY \cxx_name
END \c_name
.endm
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
# On entry:
# t0 = shorty
# t1 = ptr to arg_array
# t2 = number of argument bytes remain
# v0 = ptr to stack frame where to copy arg_array
# This macro modifies t3, t9 and v0
.macro LOOP_OVER_SHORTY_LOADING_REG gpu, fpu, label
lbu $t3, 0($t0) # get argument type from shorty
beqz $t3, \label
daddiu $t0, 1
li $t9, 68 # put char 'D' into t9
beq $t9, $t3, 1f # branch if result type char == 'D'
li $t9, 70 # put char 'F' into t9
beq $t9, $t3, 2f # branch if result type char == 'F'
li $t9, 74 # put char 'J' into t9
beq $t9, $t3, 3f # branch if result type char == 'J'
nop
lw $\gpu, 0($t1)
sw $\gpu, 0($v0)
daddiu $v0, 4
daddiu $t1, 4
b 4f
daddiu $t2, -4 # delay slot
1: # found double
lwu $t3, 0($t1)
mtc1 $t3, $\fpu
sw $t3, 0($v0)
lwu $t3, 4($t1)
mthc1 $t3, $\fpu
sw $t3, 4($v0)
daddiu $v0, 8
daddiu $t1, 8
b 4f
daddiu $t2, -8 # delay slot
2: # found float
lwu $t3, 0($t1)
mtc1 $t3, $\fpu
sw $t3, 0($v0)
daddiu $v0, 4
daddiu $t1, 4
b 4f
daddiu $t2, -4 # delay slot
3: # found long (8 bytes)
lwu $t3, 0($t1)
sw $t3, 0($v0)
lwu $t9, 4($t1)
sw $t9, 4($v0)
dsll $t9, $t9, 32
or $\gpu, $t9, $t3
daddiu $v0, 8
daddiu $t1, 8
daddiu $t2, -8
4:
.endm
/*
* Invocation stub for quick code.
* On entry:
* a0 = method pointer
* a1 = argument array that must at least contain the this ptr.
* a2 = size of argument array in bytes
* a3 = (managed) thread pointer
* a4 = JValue* result
* a5 = shorty
*/
ENTRY_NO_GP art_quick_invoke_stub
# push a4, a5, s0(rSUSPEND), s1(rSELF), s8, ra onto the stack
daddiu $sp, $sp, -48
.cfi_adjust_cfa_offset 48
sd $ra, 40($sp)
.cfi_rel_offset 31, 40
sd $s8, 32($sp)
.cfi_rel_offset 30, 32
sd $s1, 24($sp)
.cfi_rel_offset 17, 24
sd $s0, 16($sp)
.cfi_rel_offset 16, 16
sd $a5, 8($sp)
.cfi_rel_offset 9, 8
sd $a4, 0($sp)
.cfi_rel_offset 8, 0
daddiu $s0, $zero, SUSPEND_CHECK_INTERVAL # reset rSUSPEND to SUSPEND_CHECK_INTERVAL
move $s1, $a3 # move managed thread pointer into s1 (rSELF)
move $s8, $sp # save sp in s8 (fp)
daddiu $t3, $a2, 24 # add 8 for ArtMethod* and 16 for stack alignment
dsrl $t3, $t3, 4 # shift the frame size right 4
dsll $t3, $t3, 4 # shift the frame size left 4 to align to 16 bytes
dsubu $sp, $sp, $t3 # reserve stack space for argument array
daddiu $t0, $a5, 1 # t0 = shorty[1] (skip 1 for return type)
daddiu $t1, $a1, 4 # t1 = ptr to arg_array[4] (skip this ptr)
daddiu $t2, $a2, -4 # t2 = number of argument bytes remain (skip this ptr)
daddiu $v0, $sp, 12 # v0 points to where to copy arg_array
LOOP_OVER_SHORTY_LOADING_REG a2, f14, call_fn
LOOP_OVER_SHORTY_LOADING_REG a3, f15, call_fn
LOOP_OVER_SHORTY_LOADING_REG a4, f16, call_fn
LOOP_OVER_SHORTY_LOADING_REG a5, f17, call_fn
LOOP_OVER_SHORTY_LOADING_REG a6, f18, call_fn
LOOP_OVER_SHORTY_LOADING_REG a7, f19, call_fn
# copy arguments onto stack (t2 should be multiples of 4)
ble $t2, $zero, call_fn # t2 = number of argument bytes remain
1:
lw $t3, 0($t1) # load from argument array
daddiu $t1, $t1, 4
sw $t3, 0($v0) # save to stack
daddiu $t2, -4
bgt $t2, $zero, 1b # t2 = number of argument bytes remain
daddiu $v0, $v0, 4
call_fn:
# call method (a0 and a1 have been untouched)
lwu $a1, 0($a1) # make a1 = this ptr
sw $a1, 8($sp) # copy this ptr (skip 8 bytes for ArtMethod*)
sd $zero, 0($sp) # store null for ArtMethod* at bottom of frame
ld $t9, ART_METHOD_QUICK_CODE_OFFSET_64($a0) # get pointer to the code
jalr $t9 # call the method
nop
move $sp, $s8 # restore sp
# pop a4, a5, s1(rSELF), s8, ra off of the stack
ld $a4, 0($sp)
.cfi_restore 8
ld $a5, 8($sp)
.cfi_restore 9
ld $s0, 16($sp)
.cfi_restore 16
ld $s1, 24($sp)
.cfi_restore 17
ld $s8, 32($sp)
.cfi_restore 30
ld $ra, 40($sp)
.cfi_restore 31
daddiu $sp, $sp, 48
.cfi_adjust_cfa_offset -48
# a4 = JValue* result
# a5 = shorty string
lbu $t1, 0($a5) # get result type from shorty
li $t2, 68 # put char 'D' into t2
beq $t1, $t2, 1f # branch if result type char == 'D'
li $t3, 70 # put char 'F' into t3
beq $t1, $t3, 1f # branch if result type char == 'F'
sw $v0, 0($a4) # store the result
dsrl $v1, $v0, 32
jalr $zero, $ra
sw $v1, 4($a4) # store the other half of the result
1:
mfc1 $v0, $f0
mfhc1 $v1, $f0
sw $v0, 0($a4) # store the result
jalr $zero, $ra
sw $v1, 4($a4) # store the other half of the result
END art_quick_invoke_stub
/*
* Invocation static stub for quick code.
* On entry:
* a0 = method pointer
* a1 = argument array that must at least contain the this ptr.
* a2 = size of argument array in bytes
* a3 = (managed) thread pointer
* a4 = JValue* result
* a5 = shorty
*/
ENTRY_NO_GP art_quick_invoke_static_stub
# push a4, a5, s0(rSUSPEND), s1(rSELF), s8, ra, onto the stack
daddiu $sp, $sp, -48
.cfi_adjust_cfa_offset 48
sd $ra, 40($sp)
.cfi_rel_offset 31, 40
sd $s8, 32($sp)
.cfi_rel_offset 30, 32
sd $s1, 24($sp)
.cfi_rel_offset 17, 24
sd $s0, 16($sp)
.cfi_rel_offset 16, 16
sd $a5, 8($sp)
.cfi_rel_offset 9, 8
sd $a4, 0($sp)
.cfi_rel_offset 8, 0
daddiu $s0, $zero, SUSPEND_CHECK_INTERVAL # reset rSUSPEND to SUSPEND_CHECK_INTERVAL
move $s1, $a3 # move managed thread pointer into s1 (rSELF)
move $s8, $sp # save sp in s8 (fp)
daddiu $t3, $a2, 24 # add 8 for ArtMethod* and 16 for stack alignment
dsrl $t3, $t3, 4 # shift the frame size right 4
dsll $t3, $t3, 4 # shift the frame size left 4 to align to 16 bytes
dsubu $sp, $sp, $t3 # reserve stack space for argument array
daddiu $t0, $a5, 1 # t0 = shorty[1] (skip 1 for return type)
move $t1, $a1 # t1 = arg_array
move $t2, $a2 # t2 = number of argument bytes remain
daddiu $v0, $sp, 8 # v0 points to where to copy arg_array
LOOP_OVER_SHORTY_LOADING_REG a1, f13, call_sfn
LOOP_OVER_SHORTY_LOADING_REG a2, f14, call_sfn
LOOP_OVER_SHORTY_LOADING_REG a3, f15, call_sfn
LOOP_OVER_SHORTY_LOADING_REG a4, f16, call_sfn
LOOP_OVER_SHORTY_LOADING_REG a5, f17, call_sfn
LOOP_OVER_SHORTY_LOADING_REG a6, f18, call_sfn
LOOP_OVER_SHORTY_LOADING_REG a7, f19, call_sfn
# copy arguments onto stack (t2 should be multiples of 4)
ble $t2, $zero, call_sfn # t2 = number of argument bytes remain
1:
lw $t3, 0($t1) # load from argument array
daddiu $t1, $t1, 4
sw $t3, 0($v0) # save to stack
daddiu $t2, -4
bgt $t2, $zero, 1b # t2 = number of argument bytes remain
daddiu $v0, $v0, 4
call_sfn:
# call method (a0 has been untouched)
sd $zero, 0($sp) # store null for ArtMethod* at bottom of frame
ld $t9, ART_METHOD_QUICK_CODE_OFFSET_64($a0) # get pointer to the code
jalr $t9 # call the method
nop
move $sp, $s8 # restore sp
# pop a4, a5, s0(rSUSPEND), s1(rSELF), s8, ra off of the stack
ld $a4, 0($sp)
.cfi_restore 8
ld $a5, 8($sp)
.cfi_restore 9
ld $s0, 16($sp)
.cfi_restore 16
ld $s1, 24($sp)
.cfi_restore 17
ld $s8, 32($sp)
.cfi_restore 30
ld $ra, 40($sp)
.cfi_restore 31
daddiu $sp, $sp, 48
.cfi_adjust_cfa_offset -48
# a4 = JValue* result
# a5 = shorty string
lbu $t1, 0($a5) # get result type from shorty
li $t2, 68 # put char 'D' into t2
beq $t1, $t2, 1f # branch if result type char == 'D'
li $t3, 70 # put char 'F' into t3
beq $t1, $t3, 1f # branch if result type char == 'F'
sw $v0, 0($a4) # store the result
dsrl $v1, $v0, 32
jalr $zero, $ra
sw $v1, 4($a4) # store the other half of the result
1:
mfc1 $v0, $f0
mfhc1 $v1, $f0
sw $v0, 0($a4) # store the result
jalr $zero, $ra
sw $v1, 4($a4) # store the other half of the result
END art_quick_invoke_static_stub
/*
* Entry from managed code that calls artHandleFillArrayDataFromCode and
* delivers exception on failure.
*/
.extern artHandleFillArrayDataFromCode
ENTRY art_quick_handle_fill_data
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case exception allocation triggers GC
ld $a2, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artHandleFillArrayDataFromCode # (payload offset, Array*, method, Thread*)
move $a3, rSELF # pass Thread::Current
RETURN_IF_ZERO
END art_quick_handle_fill_data
/*
* Entry from managed code that calls artLockObjectFromCode, may block for GC.
*/
.extern artLockObjectFromCode
ENTRY art_quick_lock_object
beq $a0, $zero, .Lart_quick_throw_null_pointer_exception_gp_set
nop
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case we block
jal artLockObjectFromCode # (Object* obj, Thread*)
move $a1, rSELF # pass Thread::Current
RETURN_IF_ZERO
END art_quick_lock_object
/*
* Entry from managed code that calls artUnlockObjectFromCode and delivers exception on failure.
*/
.extern artUnlockObjectFromCode
ENTRY art_quick_unlock_object
beq $a0, $zero, .Lart_quick_throw_null_pointer_exception_gp_set
nop
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case exception allocation triggers GC
jal artUnlockObjectFromCode # (Object* obj, Thread*)
move $a1, rSELF # pass Thread::Current
RETURN_IF_ZERO
END art_quick_unlock_object
/*
* Entry from managed code that calls artCheckCastFromCode and delivers exception on failure.
*/
.extern artThrowClassCastException
ENTRY art_quick_check_cast
daddiu $sp, $sp, -32
.cfi_adjust_cfa_offset 32
sd $ra, 24($sp)
.cfi_rel_offset 31, 24
sd $t9, 16($sp)
sd $a1, 8($sp)
sd $a0, 0($sp)
jal artIsAssignableFromCode
.cpreturn # Restore gp from t8 in branch delay slot.
# t8 may be clobbered in artIsAssignableFromCode.
beq $v0, $zero, .Lthrow_class_cast_exception
ld $ra, 24($sp)
jalr $zero, $ra
daddiu $sp, $sp, 32
.cfi_adjust_cfa_offset -32
.Lthrow_class_cast_exception:
ld $t9, 16($sp)
ld $a1, 8($sp)
ld $a0, 0($sp)
daddiu $sp, $sp, 32
.cfi_adjust_cfa_offset -32
SETUP_GP
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME
dla $t9, artThrowClassCastException
jalr $zero, $t9 # artThrowClassCastException (Class*, Class*, Thread*)
move $a2, rSELF # pass Thread::Current
END art_quick_check_cast
/*
* Restore rReg's value from offset($sp) if rReg is not the same as rExclude.
* nReg is the register number for rReg.
*/
.macro POP_REG_NE rReg, nReg, offset, rExclude
.ifnc \rReg, \rExclude
ld \rReg, \offset($sp) # restore rReg
.cfi_restore \nReg
.endif
.endm
/*
* Macro to insert read barrier, only used in art_quick_aput_obj.
* rObj and rDest are registers, offset is a defined literal such as MIRROR_OBJECT_CLASS_OFFSET.
* TODO: When read barrier has a fast path, add heap unpoisoning support for the fast path.
*/
.macro READ_BARRIER rDest, rObj, offset
#ifdef USE_READ_BARRIER
# saved registers used in art_quick_aput_obj: a0-a2, t0-t1, t9, ra. 16B-aligned.
daddiu $sp, $sp, -64
.cfi_adjust_cfa_offset 64
sd $ra, 56($sp)
.cfi_rel_offset 31, 56
sd $t9, 48($sp)
.cfi_rel_offset 25, 48
sd $t1, 40($sp)
.cfi_rel_offset 13, 40
sd $t0, 32($sp)
.cfi_rel_offset 12, 32
sd $a2, 16($sp) # padding slot at offset 24 (padding can be any slot in the 64B)
.cfi_rel_offset 6, 16
sd $a1, 8($sp)
.cfi_rel_offset 5, 8
sd $a0, 0($sp)
.cfi_rel_offset 4, 0
# move $a0, \rRef # pass ref in a0 (no-op for now since parameter ref is unused)
.ifnc \rObj, $a1
move $a1, \rObj # pass rObj
.endif
daddiu $a2, $zero, \offset # pass offset
jal artReadBarrierSlow # artReadBarrierSlow(ref, rObj, offset)
.cpreturn # Restore gp from t8 in branch delay slot.
# t8 may be clobbered in artReadBarrierSlow.
# No need to unpoison return value in v0, artReadBarrierSlow() would do the unpoisoning.
move \rDest, $v0 # save return value in rDest
# (rDest cannot be v0 in art_quick_aput_obj)
ld $a0, 0($sp) # restore registers except rDest
# (rDest can only be t0 or t1 in art_quick_aput_obj)
.cfi_restore 4
ld $a1, 8($sp)
.cfi_restore 5
ld $a2, 16($sp)
.cfi_restore 6
POP_REG_NE $t0, 12, 32, \rDest
POP_REG_NE $t1, 13, 40, \rDest
ld $t9, 48($sp)
.cfi_restore 25
ld $ra, 56($sp) # restore $ra
.cfi_restore 31
daddiu $sp, $sp, 64
.cfi_adjust_cfa_offset -64
SETUP_GP # set up gp because we are not returning
#else
lwu \rDest, \offset(\rObj)
UNPOISON_HEAP_REF \rDest
#endif // USE_READ_BARRIER
.endm
/*
* Entry from managed code for array put operations of objects where the value being stored
* needs to be checked for compatibility.
* a0 = array, a1 = index, a2 = value
*/
ENTRY art_quick_aput_obj_with_null_and_bound_check
bne $a0, $zero, .Lart_quick_aput_obj_with_bound_check_gp_set
nop
b .Lart_quick_throw_null_pointer_exception_gp_set
nop
END art_quick_aput_obj_with_null_and_bound_check
ENTRY art_quick_aput_obj_with_bound_check
lwu $t0, MIRROR_ARRAY_LENGTH_OFFSET($a0)
sltu $t1, $a1, $t0
bne $t1, $zero, .Lart_quick_aput_obj_gp_set
nop
move $a0, $a1
b .Lart_quick_throw_array_bounds_gp_set
move $a1, $t0
END art_quick_aput_obj_with_bound_check
ENTRY art_quick_aput_obj
beq $a2, $zero, .Ldo_aput_null
nop
READ_BARRIER $t0, $a0, MIRROR_OBJECT_CLASS_OFFSET
READ_BARRIER $t1, $a2, MIRROR_OBJECT_CLASS_OFFSET
READ_BARRIER $t0, $t0, MIRROR_CLASS_COMPONENT_TYPE_OFFSET
bne $t1, $t0, .Lcheck_assignability # value's type == array's component type - trivial assignability
nop
.Ldo_aput:
dsll $a1, $a1, 2
daddu $t0, $a0, $a1
POISON_HEAP_REF $a2
sw $a2, MIRROR_OBJECT_ARRAY_DATA_OFFSET($t0)
ld $t0, THREAD_CARD_TABLE_OFFSET(rSELF)
dsrl $t1, $a0, 7
daddu $t1, $t1, $t0
sb $t0, ($t1)
jalr $zero, $ra
.cpreturn # Restore gp from t8 in branch delay slot.
.Ldo_aput_null:
dsll $a1, $a1, 2
daddu $t0, $a0, $a1
sw $a2, MIRROR_OBJECT_ARRAY_DATA_OFFSET($t0)
jalr $zero, $ra
.cpreturn # Restore gp from t8 in branch delay slot.
.Lcheck_assignability:
daddiu $sp, $sp, -64
.cfi_adjust_cfa_offset 64
sd $ra, 56($sp)
.cfi_rel_offset 31, 56
sd $t9, 24($sp)
sd $a2, 16($sp)
sd $a1, 8($sp)
sd $a0, 0($sp)
move $a1, $t1
move $a0, $t0
jal artIsAssignableFromCode # (Class*, Class*)
.cpreturn # Restore gp from t8 in branch delay slot.
# t8 may be clobbered in artIsAssignableFromCode.
ld $ra, 56($sp)
ld $t9, 24($sp)
ld $a2, 16($sp)
ld $a1, 8($sp)
ld $a0, 0($sp)
daddiu $sp, $sp, 64
.cfi_adjust_cfa_offset -64
SETUP_GP
bne $v0, $zero, .Ldo_aput
nop
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME
move $a1, $a2
dla $t9, artThrowArrayStoreException
jalr $zero, $t9 # artThrowArrayStoreException(Class*, Class*, Thread*)
move $a2, rSELF # pass Thread::Current
END art_quick_aput_obj
/*
* Called by managed code to resolve a static field and load a boolean primitive value.
*/
.extern artGetBooleanStaticFromCode
ENTRY art_quick_get_boolean_static
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a1, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artGetBooleanStaticFromCode # (uint32_t field_idx, const Method* referrer, Thread*)
move $a2, rSELF # pass Thread::Current
RETURN_IF_NO_EXCEPTION
END art_quick_get_boolean_static
/*
* Called by managed code to resolve a static field and load a byte primitive value.
*/
.extern artGetByteStaticFromCode
ENTRY art_quick_get_byte_static
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a1, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artGetByteStaticFromCode # (uint32_t field_idx, const Method* referrer, Thread*)
move $a2, rSELF # pass Thread::Current
RETURN_IF_NO_EXCEPTION
END art_quick_get_byte_static
/*
* Called by managed code to resolve a static field and load a char primitive value.
*/
.extern artGetCharStaticFromCode
ENTRY art_quick_get_char_static
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a1, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artGetCharStaticFromCode # (uint32_t field_idx, const Method* referrer, Thread*)
move $a2, rSELF # pass Thread::Current
RETURN_IF_NO_EXCEPTION
END art_quick_get_char_static
/*
* Called by managed code to resolve a static field and load a short primitive value.
*/
.extern artGetShortStaticFromCode
ENTRY art_quick_get_short_static
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a1, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artGetShortStaticFromCode # (uint32_t field_idx, const Method* referrer, Thread*)
move $a2, rSELF # pass Thread::Current
RETURN_IF_NO_EXCEPTION
END art_quick_get_short_static
/*
* Called by managed code to resolve a static field and load a 32-bit primitive value.
*/
.extern artGet32StaticFromCode
ENTRY art_quick_get32_static
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a1, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artGet32StaticFromCode # (uint32_t field_idx, const Method* referrer, Thread*)
move $a2, rSELF # pass Thread::Current
RETURN_IF_NO_EXCEPTION
END art_quick_get32_static
/*
* Called by managed code to resolve a static field and load a 64-bit primitive value.
*/
.extern artGet64StaticFromCode
ENTRY art_quick_get64_static
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a1, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artGet64StaticFromCode # (uint32_t field_idx, const Method* referrer, Thread*)
move $a2, rSELF # pass Thread::Current
RETURN_IF_NO_EXCEPTION
END art_quick_get64_static
/*
* Called by managed code to resolve a static field and load an object reference.
*/
.extern artGetObjStaticFromCode
ENTRY art_quick_get_obj_static
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a1, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artGetObjStaticFromCode # (uint32_t field_idx, const Method* referrer, Thread*)
move $a2, rSELF # pass Thread::Current
RETURN_IF_NO_EXCEPTION
END art_quick_get_obj_static
/*
* Called by managed code to resolve an instance field and load a boolean primitive value.
*/
.extern artGetBooleanInstanceFromCode
ENTRY art_quick_get_boolean_instance
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a2, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artGetBooleanInstanceFromCode # (field_idx, Object*, referrer, Thread*)
move $a3, rSELF # pass Thread::Current
RETURN_IF_NO_EXCEPTION
END art_quick_get_boolean_instance
/*
* Called by managed code to resolve an instance field and load a byte primitive value.
*/
.extern artGetByteInstanceFromCode
ENTRY art_quick_get_byte_instance
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a2, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artGetByteInstanceFromCode # (field_idx, Object*, referrer, Thread*)
move $a3, rSELF # pass Thread::Current
RETURN_IF_NO_EXCEPTION
END art_quick_get_byte_instance
/*
* Called by managed code to resolve an instance field and load a char primitive value.
*/
.extern artGetCharInstanceFromCode
ENTRY art_quick_get_char_instance
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a2, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artGetCharInstanceFromCode # (field_idx, Object*, referrer, Thread*)
move $a3, rSELF # pass Thread::Current
RETURN_IF_NO_EXCEPTION
END art_quick_get_char_instance
/*
* Called by managed code to resolve an instance field and load a short primitive value.
*/
.extern artGetShortInstanceFromCode
ENTRY art_quick_get_short_instance
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a2, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artGetShortInstanceFromCode # (field_idx, Object*, referrer, Thread*)
move $a3, rSELF # pass Thread::Current
RETURN_IF_NO_EXCEPTION
END art_quick_get_short_instance
/*
* Called by managed code to resolve an instance field and load a 32-bit primitive value.
*/
.extern artGet32InstanceFromCode
ENTRY art_quick_get32_instance
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a2, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artGet32InstanceFromCode # (field_idx, Object*, referrer, Thread*)
move $a3, rSELF # pass Thread::Current
RETURN_IF_NO_EXCEPTION
END art_quick_get32_instance
/*
* Called by managed code to resolve an instance field and load a 64-bit primitive value.
*/
.extern artGet64InstanceFromCode
ENTRY art_quick_get64_instance
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a2, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artGet64InstanceFromCode # (field_idx, Object*, referrer, Thread*)
move $a3, rSELF # pass Thread::Current
RETURN_IF_NO_EXCEPTION
END art_quick_get64_instance
/*
* Called by managed code to resolve an instance field and load an object reference.
*/
.extern artGetObjInstanceFromCode
ENTRY art_quick_get_obj_instance
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a2, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artGetObjInstanceFromCode # (field_idx, Object*, referrer, Thread*)
move $a3, rSELF # pass Thread::Current
RETURN_IF_NO_EXCEPTION
END art_quick_get_obj_instance
/*
* Called by managed code to resolve a static field and store a 8-bit primitive value.
*/
.extern artSet8StaticFromCode
ENTRY art_quick_set8_static
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a2, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artSet8StaticFromCode # (field_idx, new_val, referrer, Thread*)
move $a3, rSELF # pass Thread::Current
RETURN_IF_ZERO
END art_quick_set8_static
/*
* Called by managed code to resolve a static field and store a 16-bit primitive value.
*/
.extern artSet16StaticFromCode
ENTRY art_quick_set16_static
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a2, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artSet16StaticFromCode # (field_idx, new_val, referrer, Thread*)
move $a3, rSELF # pass Thread::Current
RETURN_IF_ZERO
END art_quick_set16_static
/*
* Called by managed code to resolve a static field and store a 32-bit primitive value.
*/
.extern artSet32StaticFromCode
ENTRY art_quick_set32_static
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a2, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artSet32StaticFromCode # (field_idx, new_val, referrer, Thread*)
move $a3, rSELF # pass Thread::Current
RETURN_IF_ZERO
END art_quick_set32_static
/*
* Called by managed code to resolve a static field and store a 64-bit primitive value.
*/
.extern artSet64StaticFromCode
ENTRY art_quick_set64_static
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
# a2 contains the new val
ld $a1, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artSet64StaticFromCode # (field_idx, referrer, new_val, Thread*)
move $a3, rSELF # pass Thread::Current
RETURN_IF_ZERO
END art_quick_set64_static
/*
* Called by managed code to resolve a static field and store an object reference.
*/
.extern artSetObjStaticFromCode
ENTRY art_quick_set_obj_static
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a2, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artSetObjStaticFromCode # (field_idx, new_val, referrer, Thread*)
move $a3, rSELF # pass Thread::Current
RETURN_IF_ZERO
END art_quick_set_obj_static
/*
* Called by managed code to resolve an instance field and store a 8-bit primitive value.
*/
.extern artSet8InstanceFromCode
ENTRY art_quick_set8_instance
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a3, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artSet8InstanceFromCode # (field_idx, Object*, new_val, referrer, Thread*)
move $a4, rSELF # pass Thread::Current
RETURN_IF_ZERO
END art_quick_set8_instance
/*
* Called by managed code to resolve an instance field and store a 16-bit primitive value.
*/
.extern artSet16InstanceFromCode
ENTRY art_quick_set16_instance
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a3, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artSet16InstanceFromCode # (field_idx, Object*, new_val, referrer, Thread*)
move $a4, rSELF # pass Thread::Current
RETURN_IF_ZERO
END art_quick_set16_instance
/*
* Called by managed code to resolve an instance field and store a 32-bit primitive value.
*/
.extern artSet32InstanceFromCode
ENTRY art_quick_set32_instance
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a3, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artSet32InstanceFromCode # (field_idx, Object*, new_val, referrer, Thread*)
move $a4, rSELF # pass Thread::Current
RETURN_IF_ZERO
END art_quick_set32_instance
/*
* Called by managed code to resolve an instance field and store a 64-bit primitive value.
*/
.extern artSet64InstanceFromCode
ENTRY art_quick_set64_instance
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a3, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artSet64InstanceFromCode # (field_idx, Object*, new_val, referrer, Thread*)
move $a4, rSELF # pass Thread::Current
RETURN_IF_ZERO
END art_quick_set64_instance
/*
* Called by managed code to resolve an instance field and store an object reference.
*/
.extern artSetObjInstanceFromCode
ENTRY art_quick_set_obj_instance
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
ld $a3, FRAME_SIZE_REFS_ONLY_CALLEE_SAVE($sp) # pass referrer's Method*
jal artSetObjInstanceFromCode # (field_idx, Object*, new_val, referrer, Thread*)
move $a4, rSELF # pass Thread::Current
RETURN_IF_ZERO
END art_quick_set_obj_instance
// Macro to facilitate adding new allocation entrypoints.
.macro ONE_ARG_DOWNCALL name, entrypoint, return
.extern \entrypoint
ENTRY \name
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
jal \entrypoint
move $a1, rSELF # pass Thread::Current
\return
END \name
.endm
// Macro to facilitate adding new allocation entrypoints.
.macro TWO_ARG_DOWNCALL name, entrypoint, return
.extern \entrypoint
ENTRY \name
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
jal \entrypoint
move $a2, rSELF # pass Thread::Current
\return
END \name
.endm
.macro THREE_ARG_DOWNCALL name, entrypoint, return
.extern \entrypoint
ENTRY \name
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
jal \entrypoint
move $a3, rSELF # pass Thread::Current
\return
END \name
.endm
.macro FOUR_ARG_DOWNCALL name, entrypoint, return
.extern \entrypoint
ENTRY \name
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves in case of GC
jal \entrypoint
move $a4, rSELF # pass Thread::Current
\return
END \name
.endm
// Generate the allocation entrypoints for each allocator.
GENERATE_ALLOC_ENTRYPOINTS_FOR_EACH_ALLOCATOR
// A hand-written override for GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_rosalloc, RosAlloc).
ENTRY art_quick_alloc_object_rosalloc
# Fast path rosalloc allocation
# a0: type_idx
# a1: ArtMethod*
# s1: Thread::Current
# -----------------------------
# t0: class
# t1: object size
# t2: rosalloc run
# t3: thread stack top offset
# a4: thread stack bottom offset
# v0: free list head
#
# a5, a6 : temps
ld $t0, ART_METHOD_DEX_CACHE_TYPES_OFFSET_64($a1) # Load dex cache resolved types array.
dsll $a5, $a0, COMPRESSED_REFERENCE_SIZE_SHIFT # Shift the value.
daddu $a5, $t0, $a5 # Compute the index.
lwu $t0, 0($a5) # Load class (t0).
beqzc $t0, .Lart_quick_alloc_object_rosalloc_slow_path
li $a6, MIRROR_CLASS_STATUS_INITIALIZED
lwu $a5, MIRROR_CLASS_STATUS_OFFSET($t0) # Check class status.
bnec $a5, $a6, .Lart_quick_alloc_object_rosalloc_slow_path
# Add a fake dependence from the following access flag and size loads to the status load. This
# is to prevent those loads from being reordered above the status load and reading wrong values.
xor $a5, $a5, $a5
daddu $t0, $t0, $a5
lwu $a5, MIRROR_CLASS_ACCESS_FLAGS_OFFSET($t0) # Check if access flags has
li $a6, ACCESS_FLAGS_CLASS_IS_FINALIZABLE # kAccClassIsFinalizable.
and $a6, $a5, $a6
bnezc $a6, .Lart_quick_alloc_object_rosalloc_slow_path
ld $t3, THREAD_LOCAL_ALLOC_STACK_TOP_OFFSET($s1) # Check if thread local allocation stack
ld $a4, THREAD_LOCAL_ALLOC_STACK_END_OFFSET($s1) # has any room left.
bgeuc $t3, $a4, .Lart_quick_alloc_object_rosalloc_slow_path
lwu $t1, MIRROR_CLASS_OBJECT_SIZE_OFFSET($t0) # Load object size (t1).
li $a5, ROSALLOC_MAX_THREAD_LOCAL_BRACKET_SIZE # Check if size is for a thread local
# allocation.
bltuc $a5, $t1, .Lart_quick_alloc_object_rosalloc_slow_path
# Compute the rosalloc bracket index from the size. Allign up the size by the rosalloc bracket
# quantum size and divide by the quantum size and subtract by 1.
daddiu $t1, $t1, -1 # Decrease obj size and shift right by
dsrl $t1, $t1, ROSALLOC_BRACKET_QUANTUM_SIZE_SHIFT # quantum.
dsll $t2, $t1, POINTER_SIZE_SHIFT
daddu $t2, $t2, $s1
ld $t2, THREAD_ROSALLOC_RUNS_OFFSET($t2) # Load rosalloc run (t2).
# Load the free list head (v0).
# NOTE: this will be the return val.
ld $v0, (ROSALLOC_RUN_FREE_LIST_OFFSET + ROSALLOC_RUN_FREE_LIST_HEAD_OFFSET)($t2)
beqzc $v0, .Lart_quick_alloc_object_rosalloc_slow_path
# Load the next pointer of the head and update the list head with the next pointer.
ld $a5, ROSALLOC_SLOT_NEXT_OFFSET($v0)
sd $a5, (ROSALLOC_RUN_FREE_LIST_OFFSET + ROSALLOC_RUN_FREE_LIST_HEAD_OFFSET)($t2)
# Store the class pointer in the header. This also overwrites the first pointer. The offsets are
# asserted to match.
#if ROSALLOC_SLOT_NEXT_OFFSET != MIRROR_OBJECT_CLASS_OFFSET
#error "Class pointer needs to overwrite next pointer."
#endif
POISON_HEAP_REF $t0
sw $t0, MIRROR_OBJECT_CLASS_OFFSET($v0)
# Push the new object onto the thread local allocation stack and increment the thread local
# allocation stack top.
sd $v0, 0($t3)
daddiu $t3, $t3, COMPRESSED_REFERENCE_SIZE
sd $t3, THREAD_LOCAL_ALLOC_STACK_TOP_OFFSET($s1)
# Decrement the size of the free list.
lw $a5, (ROSALLOC_RUN_FREE_LIST_OFFSET + ROSALLOC_RUN_FREE_LIST_SIZE_OFFSET)($t2)
addiu $a5, $a5, -1
sw $a5, (ROSALLOC_RUN_FREE_LIST_OFFSET + ROSALLOC_RUN_FREE_LIST_SIZE_OFFSET)($t2)
sync # Fence.
jalr $zero, $ra
.cpreturn # Restore gp from t8 in branch delay slot.
.Lart_quick_alloc_object_rosalloc_slow_path:
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME
jal artAllocObjectFromCodeRosAlloc
move $a2 ,$s1 # Pass self as argument.
RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
END art_quick_alloc_object_rosalloc
GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_tlab, TLAB)
GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_region_tlab, RegionTLAB)
/*
* Entry from managed code to resolve a string, this stub will allocate a String and deliver an
* exception on error. On success the String is returned. A0 holds the string index. The fast
* path check for hit in strings cache has already been performed.
*/
ONE_ARG_DOWNCALL art_quick_resolve_string, artResolveStringFromCode, RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
/*
* Entry from managed code when uninitialized static storage, this stub will run the class
* initializer and deliver the exception on error. On success the static storage base is
* returned.
*/
ONE_ARG_DOWNCALL art_quick_initialize_static_storage, artInitializeStaticStorageFromCode, RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
/*
* Entry from managed code when dex cache misses for a type_idx.
*/
ONE_ARG_DOWNCALL art_quick_initialize_type, artInitializeTypeFromCode, RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
/*
* Entry from managed code when type_idx needs to be checked for access and dex cache may also
* miss.
*/
ONE_ARG_DOWNCALL art_quick_initialize_type_and_verify_access, artInitializeTypeAndVerifyAccessFromCode, RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
/*
* Called by managed code when the value in rSUSPEND has been decremented to 0.
*/
.extern artTestSuspendFromCode
ENTRY art_quick_test_suspend
lh $a0, THREAD_FLAGS_OFFSET(rSELF)
bne $a0, $zero, 1f
daddiu rSUSPEND, $zero, SUSPEND_CHECK_INTERVAL # reset rSUSPEND to SUSPEND_CHECK_INTERVAL
jalr $zero, $ra
.cpreturn # Restore gp from t8 in branch delay slot.
1:
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves for stack crawl
jal artTestSuspendFromCode # (Thread*)
move $a0, rSELF
RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME_AND_RETURN
END art_quick_test_suspend
/*
* Called by managed code that is attempting to call a method on a proxy class. On entry
* r0 holds the proxy method; r1, r2 and r3 may contain arguments.
*/
.extern artQuickProxyInvokeHandler
ENTRY art_quick_proxy_invoke_handler
SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_WITH_METHOD_IN_A0
move $a2, rSELF # pass Thread::Current
jal artQuickProxyInvokeHandler # (Method* proxy method, receiver, Thread*, SP)
move $a3, $sp # pass $sp
ld $t0, THREAD_EXCEPTION_OFFSET(rSELF) # load Thread::Current()->exception_
daddiu $sp, $sp, REFS_AND_ARGS_MINUS_REFS_SIZE # skip a0-a7 and f12-f19
RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME
bne $t0, $zero, 1f
dmtc1 $v0, $f0 # place return value to FP return value
jalr $zero, $ra
dmtc1 $v1, $f1 # place return value to FP return value
1:
DELIVER_PENDING_EXCEPTION
END art_quick_proxy_invoke_handler
/*
* Called to resolve an imt conflict. t0 is a hidden argument that holds the target method's
* dex method index.
*/
ENTRY art_quick_imt_conflict_trampoline
move $a0, $t0
INVOKE_TRAMPOLINE_BODY artInvokeInterfaceTrampoline
END art_quick_imt_conflict_trampoline
.extern artQuickResolutionTrampoline
ENTRY art_quick_resolution_trampoline
SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME
move $a2, rSELF # pass Thread::Current
jal artQuickResolutionTrampoline # (Method* called, receiver, Thread*, SP)
move $a3, $sp # pass $sp
beq $v0, $zero, 1f
ld $a0, 0($sp) # load resolved method in $a0
# artQuickResolutionTrampoline puts resolved method in *SP
RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME
move $t9, $v0 # code pointer must be in $t9 to generate the global pointer
jalr $zero, $t9 # tail call to method
nop
1:
RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME
DELIVER_PENDING_EXCEPTION
END art_quick_resolution_trampoline
.extern artQuickGenericJniTrampoline
.extern artQuickGenericJniEndTrampoline
ENTRY art_quick_generic_jni_trampoline
SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_WITH_METHOD_IN_A0
move $s8, $sp # save $sp
# prepare for call to artQuickGenericJniTrampoline(Thread*, SP)
move $a0, rSELF # pass Thread::Current
move $a1, $sp # pass $sp
jal artQuickGenericJniTrampoline # (Thread*, SP)
daddiu $sp, $sp, -5120 # reserve space on the stack
# The C call will have registered the complete save-frame on success.
# The result of the call is:
# v0: ptr to native code, 0 on error.
# v1: ptr to the bottom of the used area of the alloca, can restore stack till here.
beq $v0, $zero, 1f # check entry error
move $t9, $v0 # save the code ptr
move $sp, $v1 # release part of the alloca
# Load parameters from stack into registers
ld $a0, 0($sp)
ld $a1, 8($sp)
ld $a2, 16($sp)
ld $a3, 24($sp)
ld $a4, 32($sp)
ld $a5, 40($sp)
ld $a6, 48($sp)
ld $a7, 56($sp)
# Load FPRs the same as GPRs. Look at BuildNativeCallFrameStateMachine.
l.d $f12, 0($sp)
l.d $f13, 8($sp)
l.d $f14, 16($sp)
l.d $f15, 24($sp)
l.d $f16, 32($sp)
l.d $f17, 40($sp)
l.d $f18, 48($sp)
l.d $f19, 56($sp)
jalr $t9 # native call
daddiu $sp, $sp, 64
# result sign extension is handled in C code
# prepare for call to artQuickGenericJniEndTrampoline(Thread*, result, result_f)
move $a0, rSELF # pass Thread::Current
move $a1, $v0
jal artQuickGenericJniEndTrampoline
dmfc1 $a2, $f0
ld $t0, THREAD_EXCEPTION_OFFSET(rSELF) # load Thread::Current()->exception_
bne $t0, $zero, 1f # check for pending exceptions
move $sp, $s8 # tear down the alloca
# tear dpown the callee-save frame
RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME
jalr $zero, $ra
dmtc1 $v0, $f0 # place return value to FP return value
1:
ld $sp, THREAD_TOP_QUICK_FRAME_OFFSET(rSELF)
# This will create a new save-all frame, required by the runtime.
DELIVER_PENDING_EXCEPTION
END art_quick_generic_jni_trampoline
.extern artQuickToInterpreterBridge
ENTRY art_quick_to_interpreter_bridge
SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME
move $a1, rSELF # pass Thread::Current
jal artQuickToInterpreterBridge # (Method* method, Thread*, SP)
move $a2, $sp # pass $sp
ld $t0, THREAD_EXCEPTION_OFFSET(rSELF) # load Thread::Current()->exception_
daddiu $sp, $sp, REFS_AND_ARGS_MINUS_REFS_SIZE # skip a0-a7 and f12-f19
RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME
bne $t0, $zero, 1f
dmtc1 $v0, $f0 # place return value to FP return value
jalr $zero, $ra
dmtc1 $v1, $f1 # place return value to FP return value
1:
DELIVER_PENDING_EXCEPTION
END art_quick_to_interpreter_bridge
/*
* Routine that intercepts method calls and returns.
*/
.extern artInstrumentationMethodEntryFromCode
.extern artInstrumentationMethodExitFromCode
ENTRY art_quick_instrumentation_entry
SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME
daddiu $sp, $sp, -16 # space for saving arg0
.cfi_adjust_cfa_offset 16
sd $a0, 0($sp) # save arg0
move $a3, $ra # pass $ra
jal artInstrumentationMethodEntryFromCode # (Method*, Object*, Thread*, RA)
move $a2, rSELF # pass Thread::Current
move $t9, $v0 # $t9 holds reference to code
ld $a0, 0($sp) # restore arg0
daddiu $sp, $sp, 16 # remove args
.cfi_adjust_cfa_offset -16
RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME
jalr $t9 # call method
nop
END art_quick_instrumentation_entry
/* intentional fallthrough */
.global art_quick_instrumentation_exit
art_quick_instrumentation_exit:
.cfi_startproc
SETUP_GP
move $ra, $zero # link register is to here, so clobber with 0 for later checks
SETUP_REFS_ONLY_CALLEE_SAVE_FRAME
move $t0, $sp # remember bottom of caller's frame
daddiu $sp, $sp, -16 # save return values and set up args
.cfi_adjust_cfa_offset 16
sd $v0, 0($sp)
.cfi_rel_offset 2, 0
s.d $f0, 8($sp)
mov.d $f15, $f0 # pass fpr result
move $a2, $v0 # pass gpr result
move $a1, $t0 # pass $sp
move $a0, rSELF # pass Thread::Current
jal artInstrumentationMethodExitFromCode # (Thread*, SP, gpr_res, fpr_res)
.cpreturn # Restore gp from t8 in branch delay slot. gp is not used anymore,
# and t8 may be clobbered in artInstrumentationMethodExitFromCode.
move $t9, $v0 # set aside returned link register
move $ra, $v1 # set link register for deoptimization
ld $v0, 0($sp) # restore return values
l.d $f0, 8($sp)
jalr $zero, $t9 # return
daddiu $sp, $sp, 16+FRAME_SIZE_REFS_ONLY_CALLEE_SAVE # 16 bytes of saved values + ref_only callee save frame
.cfi_adjust_cfa_offset -(16+FRAME_SIZE_REFS_ONLY_CALLEE_SAVE)
END 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.
*/
.extern artDeoptimize
.extern artEnterInterpreterFromDeoptimize
ENTRY art_quick_deoptimize
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME
jal artDeoptimize # artDeoptimize(Thread*, SP)
# Returns caller method's frame size.
move $a0, rSELF # pass Thread::current
END art_quick_deoptimize
/*
* Compiled code has requested that we deoptimize into the interpreter. The deoptimization
* will long jump to the upcall with a special exception of -1.
*/
.extern artDeoptimizeFromCompiledCode
ENTRY art_quick_deoptimize_from_compiled_code
SETUP_SAVE_ALL_CALLEE_SAVE_FRAME
jal artDeoptimizeFromCompiledCode # artDeoptimizeFromCompiledCode(Thread*, SP)
# Returns caller method's frame size.
move $a0, rSELF # pass Thread::current
END art_quick_deoptimize_from_compiled_code
.set push
.set noat
/* java.lang.String.compareTo(String anotherString) */
ENTRY_NO_GP art_quick_string_compareto
/* $a0 holds address of "this" */
/* $a1 holds address of "anotherString" */
beq $a0,$a1,9f # this and anotherString are the same object
move $v0,$zero
lw $a2,MIRROR_STRING_COUNT_OFFSET($a0) # this.length()
lw $a3,MIRROR_STRING_COUNT_OFFSET($a1) # anotherString.length()
MINu $t2, $a2, $a3
# $t2 now holds min(this.length(),anotherString.length())
beqz $t2,9f # while min(this.length(),anotherString.length())-i != 0
subu $v0,$a2,$a3 # if $t2==0 return
# (this.length() - anotherString.length())
1:
lhu $t0,MIRROR_STRING_VALUE_OFFSET($a0) # while this.charAt(i) == anotherString.charAt(i)
lhu $t1,MIRROR_STRING_VALUE_OFFSET($a1)
bne $t0,$t1,9f # if this.charAt(i) != anotherString.charAt(i)
subu $v0,$t0,$t1 # return (this.charAt(i) - anotherString.charAt(i))
daddiu $a0,$a0,2 # point at this.charAt(i++)
subu $t2,$t2,1 # new value of
# min(this.length(),anotherString.length())-i
bnez $t2,1b
daddiu $a1,$a1,2 # point at anotherString.charAt(i++)
subu $v0,$a2,$a3
9:
j $ra
nop
END art_quick_string_compareto
/* java.lang.String.indexOf(int ch, int fromIndex=0) */
ENTRY_NO_GP art_quick_indexof
/* $a0 holds address of "this" */
/* $a1 holds "ch" */
/* $a2 holds "fromIndex" */
lw $t0,MIRROR_STRING_COUNT_OFFSET($a0) # this.length()
slt $at, $a2, $zero # if fromIndex < 0
seleqz $a2, $a2, $at # fromIndex = 0;
subu $t0,$t0,$a2 # this.length() - fromIndex
blez $t0,6f # if this.length()-fromIndex <= 0
li $v0,-1 # return -1;
sll $v0,$a2,1 # $a0 += $a2 * 2
daddu $a0,$a0,$v0 # " " " " "
move $v0,$a2 # Set i to fromIndex.
1:
lhu $t3,MIRROR_STRING_VALUE_OFFSET($a0) # if this.charAt(i) == ch
beq $t3,$a1,6f # return i;
daddu $a0,$a0,2 # i++
subu $t0,$t0,1 # this.length() - i
bnez $t0,1b # while this.length() - i > 0
addu $v0,$v0,1 # i++
li $v0,-1 # if this.length() - i <= 0
# return -1;
6:
j $ra
nop
END art_quick_indexof
.set pop