/* * 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_arm64.S" #include "arch/quick_alloc_entrypoints.S" /* * Macro that sets up the callee save frame to conform with * Runtime::CreateCalleeSaveMethod(kSaveAll) */ .macro SETUP_SAVE_ALL_CALLEE_SAVE_FRAME adrp x9, :got:_ZN3art7Runtime9instance_E ldr x9, [x9, #:got_lo12:_ZN3art7Runtime9instance_E] // Our registers aren't intermixed - just spill in order. ldr x9,[x9] // x9 = & (art::Runtime * art::Runtime.instance_) . // x9 = (ArtMethod*) Runtime.instance_.callee_save_methods[kRefAndArgs] . ldr x9, [x9, RUNTIME_SAVE_ALL_CALLEE_SAVE_FRAME_OFFSET ] sub sp, sp, #368 .cfi_adjust_cfa_offset 368 // Ugly compile-time check, but we only have the preprocessor. #if (FRAME_SIZE_SAVE_ALL_CALLEE_SAVE != 368) #error "SAVE_ALL_CALLEE_SAVE_FRAME(ARM64) size not as expected." #endif // FP args stp d1, d2, [sp, #8] stp d2, d3, [sp, #24] stp d4, d5, [sp, #40] stp d6, d7, [sp, #56] // FP callee-saves stp d8, d9, [sp, #72] stp d10, d11, [sp, #88] stp d12, d13, [sp, #104] stp d14, d15, [sp, #120] stp d16, d17, [sp, #136] stp d18, d19, [sp, #152] stp d20, d21, [sp, #168] stp d22, d23, [sp, #184] stp d24, d25, [sp, #200] stp d26, d27, [sp, #216] stp d28, d29, [sp, #232] stp d30, d31, [sp, #248] // Callee saved. stp xSELF, x19, [sp, #264] .cfi_rel_offset x18, 264 .cfi_rel_offset x19, 272 stp x20, x21, [sp, #280] .cfi_rel_offset x20, 280 .cfi_rel_offset x21, 288 stp x22, x23, [sp, #296] .cfi_rel_offset x22, 296 .cfi_rel_offset x23, 304 stp x24, x25, [sp, #312] .cfi_rel_offset x24, 312 .cfi_rel_offset x25, 320 stp x26, x27, [sp, #328] .cfi_rel_offset x26, 328 .cfi_rel_offset x27, 336 stp x28, xFP, [sp, #344] // Save FP. .cfi_rel_offset x28, 344 .cfi_rel_offset x29, 352 str xLR, [sp, #360] .cfi_rel_offset x30, 360 // Loads appropriate callee-save-method str x9, [sp] // Store ArtMethod* Runtime::callee_save_methods_[kRefsAndArgs] .endm /* * Macro that sets up the callee save frame to conform with * Runtime::CreateCalleeSaveMethod(kRefsOnly). */ // WIP. .macro SETUP_REF_ONLY_CALLEE_SAVE_FRAME adrp x9, :got:_ZN3art7Runtime9instance_E ldr x9, [x9, #:got_lo12:_ZN3art7Runtime9instance_E] // Our registers aren't intermixed - just spill in order. ldr x9,[x9] // x9 = & (art::Runtime * art::Runtime.instance_) . // x9 = (ArtMethod*) Runtime.instance_.callee_save_methods[kRefAndArgs] . ldr x9, [x9, RUNTIME_REFS_ONLY_CALLEE_SAVE_FRAME_OFFSET ] sub sp, sp, #176 .cfi_adjust_cfa_offset 176 // Ugly compile-time check, but we only have the preprocessor. #if (FRAME_SIZE_REFS_ONLY_CALLEE_SAVE != 176) #error "REFS_ONLY_CALLEE_SAVE_FRAME(ARM64) size not as expected." #endif // FP callee-saves stp d8, d9, [sp, #8] stp d10, d11, [sp, #24] stp d12, d13, [sp, #40] stp d14, d15, [sp, #56] // Callee saved. stp xSELF, x19, [sp, #72] .cfi_rel_offset x18, 72 .cfi_rel_offset x19, 80 stp x20, x21, [sp, #88] .cfi_rel_offset x20, 88 .cfi_rel_offset x21, 96 stp x22, x23, [sp, #104] .cfi_rel_offset x22, 104 .cfi_rel_offset x23, 112 stp x24, x25, [sp, #120] .cfi_rel_offset x24, 120 .cfi_rel_offset x25, 128 stp x26, x27, [sp, #136] .cfi_rel_offset x26, 136 .cfi_rel_offset x27, 144 stp x28, xFP, [sp, #152] // Save FP. .cfi_rel_offset x28, 152 .cfi_rel_offset x29, 160 str xLR, [sp, #168] .cfi_rel_offset x30, 168 // Loads appropriate callee-save-method str x9, [sp] // Store ArtMethod* Runtime::callee_save_methods_[kRefsAndArgs] .endm .macro RESTORE_REF_ONLY_CALLEE_SAVE_FRAME brk 0 .endm .macro RESTORE_REF_ONLY_CALLEE_SAVE_FRAME_AND_RETURN brk 0 .endm .macro SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME_INTERNAL sub sp, sp, #304 .cfi_adjust_cfa_offset 304 // Ugly compile-time check, but we only have the preprocessor. #if (FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE != 304) #error "REFS_AND_ARGS_CALLEE_SAVE_FRAME(ARM64) size not as expected." #endif stp d0, d1, [sp, #16] stp d2, d3, [sp, #32] stp d4, d5, [sp, #48] stp d6, d7, [sp, #64] stp d8, d9, [sp, #80] stp d10, d11, [sp, #96] stp d12, d13, [sp, #112] stp d14, d15, [sp, #128] stp x1, x2, [sp, #144] .cfi_rel_offset x1, 144 .cfi_rel_offset x2, 152 stp x3, x4, [sp, #160] .cfi_rel_offset x3, 160 .cfi_rel_offset x4, 168 stp x5, x6, [sp, #176] .cfi_rel_offset x5, 176 .cfi_rel_offset x6, 184 stp x7, xSELF, [sp, #192] .cfi_rel_offset x7, 192 .cfi_rel_offset x18, 200 stp x19, x20, [sp, #208] .cfi_rel_offset x19, 208 .cfi_rel_offset x20, 216 stp x21, x22, [sp, #224] .cfi_rel_offset x21, 224 .cfi_rel_offset x22, 232 stp x23, x24, [sp, #240] .cfi_rel_offset x23, 240 .cfi_rel_offset x24, 248 stp x25, x26, [sp, #256] .cfi_rel_offset x25, 256 .cfi_rel_offset x26, 264 stp x27, x28, [sp, #272] .cfi_rel_offset x27, 272 .cfi_rel_offset x28, 280 stp xFP, xLR, [sp, #288] .cfi_rel_offset x29, 288 .cfi_rel_offset x30, 296 .endm /* * Macro that sets up the callee save frame to conform with * Runtime::CreateCalleeSaveMethod(kRefsAndArgs). * * TODO This is probably too conservative - saving FP & LR. */ .macro SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME adrp x9, :got:_ZN3art7Runtime9instance_E ldr x9, [x9, #:got_lo12:_ZN3art7Runtime9instance_E] // Our registers aren't intermixed - just spill in order. ldr x9,[x9] // x9 = & (art::Runtime * art::Runtime.instance_) . // x9 = (ArtMethod*) Runtime.instance_.callee_save_methods[kRefAndArgs] . ldr x9, [x9, RUNTIME_REF_AND_ARGS_CALLEE_SAVE_FRAME_OFFSET ] SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME_INTERNAL str x9, [sp] // Store ArtMethod* Runtime::callee_save_methods_[kRefsAndArgs] .endm .macro RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME ldp d0, d1, [sp, #16] ldp d2, d3, [sp, #32] ldp d4, d5, [sp, #48] ldp d6, d7, [sp, #64] ldp d8, d9, [sp, #80] ldp d10, d11, [sp, #96] ldp d12, d13, [sp, #112] ldp d14, d15, [sp, #128] // args. ldp x1, x2, [sp, #144] .cfi_restore x1 .cfi_restore x2 ldp x3, x4, [sp, #160] .cfi_restore x3 .cfi_restore x4 ldp x5, x6, [sp, #176] .cfi_restore x5 .cfi_restore x6 ldp x7, xSELF, [sp, #192] .cfi_restore x7 .cfi_restore x18 ldp x19, x20, [sp, #208] .cfi_restore x19 .cfi_restore x20 ldp x21, x22, [sp, #224] .cfi_restore x21 .cfi_restore x22 ldp x23, x24, [sp, #240] .cfi_restore x23 .cfi_restore x24 ldp x25, x26, [sp, #256] .cfi_restore x25 .cfi_restore x26 ldp x27, x28, [sp, #272] .cfi_restore x27 .cfi_restore x28 ldp xFP, xLR, [sp, #288] .cfi_restore x29 .cfi_restore x30 add sp, sp, #304 .cfi_adjust_cfa_offset -304 .endm .macro RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME_NO_D0 ldr d1, [sp, #24] ldp d2, d3, [sp, #32] ldp d4, d5, [sp, #48] ldp d6, d7, [sp, #64] ldp d8, d9, [sp, #80] ldp d10, d11, [sp, #96] ldp d12, d13, [sp, #112] ldp d14, d15, [sp, #128] // args. ldp x1, x2, [sp, #144] .cfi_restore x1 .cfi_restore x2 ldp x3, x4, [sp, #160] .cfi_restore x3 .cfi_restore x4 ldp x5, x6, [sp, #176] .cfi_restore x5 .cfi_restore x6 ldp x7, xSELF, [sp, #192] .cfi_restore x7 .cfi_restore x18 ldp x19, x20, [sp, #208] .cfi_restore x19 .cfi_restore x20 ldp x21, x22, [sp, #224] .cfi_restore x21 .cfi_restore x22 ldp x23, x24, [sp, #240] .cfi_restore x23 .cfi_restore x24 ldp x25, x26, [sp, #256] .cfi_restore x25 .cfi_restore x26 ldp x27, x28, [sp, #272] .cfi_restore x27 .cfi_restore x28 ldp xFP, xLR, [sp, #288] .cfi_restore x29 .cfi_restore x30 add sp, sp, #304 .cfi_adjust_cfa_offset -304 .endm .macro RETURN_IF_RESULT_IS_ZERO brk 0 .endm .macro RETURN_IF_RESULT_IS_NON_ZERO brk 0 .endm /* * Macro that set calls through to artDeliverPendingExceptionFromCode, where the pending * exception is Thread::Current()->exception_ */ .macro DELIVER_PENDING_EXCEPTION SETUP_SAVE_ALL_CALLEE_SAVE_FRAME mov x0, xSELF mov x1, sp // Point of no return. b artDeliverPendingExceptionFromCode // artDeliverPendingExceptionFromCode(Thread*, SP) brk 0 // Unreached .endm .macro RETURN_OR_DELIVER_PENDING_EXCEPTION ldr x9, [xSELF, # THREAD_EXCEPTION_OFFSET] // Get exception field. cbnz x9, 1f ret 1: DELIVER_PENDING_EXCEPTION .endm // FIXME: Temporary fix for TR(XSELF). .macro NO_ARG_RUNTIME_EXCEPTION c_name, cxx_name .extern \cxx_name ENTRY \c_name SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context mov x0, x19 // pass Thread::Current mov x1, sp // pass SP b \cxx_name // \cxx_name(Thread*, SP) END \c_name .endm // FIXME: Temporary fix for TR(XSELF). .macro ONE_ARG_RUNTIME_EXCEPTION c_name, cxx_name .extern \cxx_name ENTRY \c_name SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context. mov x1, x19 // pass Thread::Current. mov x2, sp // pass SP. b \cxx_name // \cxx_name(arg, Thread*, SP). brk 0 END \c_name .endm // FIXME: Temporary fix for TR(XSELF). .macro TWO_ARG_RUNTIME_EXCEPTION c_name, cxx_name .extern \cxx_name ENTRY \c_name SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context mov x2, x19 // pass Thread::Current mov x3, sp // pass SP b \cxx_name // \cxx_name(arg1, arg2, Thread*, SP) brk 0 END \c_name .endm /* * 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 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 an ArrayIndexOutOfBoundsException. Arg1 holds * index, arg2 holds limit. */ TWO_ARG_RUNTIME_EXCEPTION art_quick_throw_array_bounds, artThrowArrayBoundsFromCode /* * Called by managed code to create and deliver a StackOverflowError. */ NO_ARG_RUNTIME_EXCEPTION art_quick_throw_stack_overflow, artThrowStackOverflowFromCode /* * Called by managed code to create and deliver a NoSuchMethodError. */ ONE_ARG_RUNTIME_EXCEPTION art_quick_throw_no_such_method, artThrowNoSuchMethodFromCode /* * TODO arm64 specifics need to be fleshed out. * All generated callsites for interface invokes and invocation slow paths will load arguments * as usual - except instead of loading x0 with the target Method*, x0 will contain * the method_idx. This wrapper will save x1-x3, 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 x1. * * The helper will attempt to locate the target and return a result in x0 consisting * of the target Method* in x0 and method->code_ in x1. * * 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 lr * pointing back to the original caller. */ .macro INVOKE_TRAMPOLINE c_name, cxx_name .extern \cxx_name ENTRY \c_name brk 0 END \c_name .endm 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 .macro INVOKE_STUB_CREATE_FRAME SAVE_SIZE=5*8 // x4, x5, SP, LR & FP saved. SAVE_SIZE_AND_METHOD=SAVE_SIZE+8 mov x9, sp // Save stack pointer. .cfi_register sp,x9 add x10, x2, # SAVE_SIZE_AND_METHOD // calculate size of frame. sub x10, sp, x10 // Calculate SP position - saves + ArtMethod* + args and x10, x10, # ~0xf // Enforce 16 byte stack alignment. mov sp, x10 // Set new SP. sub x10, x9, #SAVE_SIZE // Calculate new FP (later). Done here as we must move SP .cfi_def_cfa_register x10 // before this. .cfi_adjust_cfa_offset SAVE_SIZE str x9, [x10, #32] // Save old stack pointer. .cfi_rel_offset sp, 32 stp x4, x5, [x10, #16] // Save result and shorty addresses. .cfi_rel_offset x4, 16 .cfi_rel_offset x5, 24 stp xFP, xLR, [x10] // Store LR & FP. .cfi_rel_offset x29, 0 .cfi_rel_offset x30, 8 mov xFP, x10 // Use xFP now, as it's callee-saved. .cfi_def_cfa_register x29 mov xSELF, x3 // Move thread pointer into SELF register. // Copy arguments into stack frame. // Use simple copy routine for now. // 4 bytes per slot. // X1 - source address // W2 - args length // X9 - destination address. // W10 - temporary add x9, sp, #8 // Destination address is bottom of stack + NULL. // Use \@ to differentiate between macro invocations. .LcopyParams\@: cmp w2, #0 beq .LendCopyParams\@ sub w2, w2, #4 // Need 65536 bytes of range. ldr w10, [x1, x2] str w10, [x9, x2] b .LcopyParams\@ .LendCopyParams\@: // Store NULL into Method* at bottom of frame. str xzr, [sp] .endm .macro INVOKE_STUB_CALL_AND_RETURN // load method-> METHOD_QUICK_CODE_OFFSET ldr x9, [x0 , #METHOD_QUICK_CODE_OFFSET] // Branch to method. blr x9 // Restore return value address and shorty address. ldp x4,x5, [xFP, #16] .cfi_restore x4 .cfi_restore x5 // Store result (w0/x0/s0/d0) appropriately, depending on resultType. ldrb w10, [x5] // Don't set anything for a void type. cmp w10, #'V' beq .Lexit_art_quick_invoke_stub\@ cmp w10, #'D' bne .Lreturn_is_float\@ str d0, [x4] b .Lexit_art_quick_invoke_stub\@ .Lreturn_is_float\@: cmp w10, #'F' bne .Lreturn_is_int\@ str s0, [x4] b .Lexit_art_quick_invoke_stub\@ // Just store x0. Doesn't matter if it is 64 or 32 bits. .Lreturn_is_int\@: str x0, [x4] .Lexit_art_quick_invoke_stub\@: ldr x2, [x29, #32] // Restore stack pointer. mov sp, x2 .cfi_restore sp ldp x29, x30, [x29] // Restore old frame pointer and link register. .cfi_restore x29 .cfi_restore x30 ret .endm /* * extern"C" void art_quick_invoke_stub(ArtMethod *method, x0 * uint32_t *args, x1 * uint32_t argsize, w2 * Thread *self, x3 * JValue *result, x4 * char *shorty); x5 * +----------------------+ * | | * | C/C++ frame | * | LR'' | * | FP'' | <- SP' * +----------------------+ * +----------------------+ * | SP' | * | X5 | * | X4 | Saved registers * | LR' | * | FP' | <- FP * +----------------------+ * | uint32_t out[n-1] | * | : : | Outs * | uint32_t out[0] | * | ArtMethod* NULL | <- SP * +----------------------+ * * Outgoing registers: * x0 - Method* * x1-x7 - integer parameters. * d0-d7 - Floating point parameters. * xSELF = self * SP = & of ArtMethod* * x1 = "this" pointer. * */ ENTRY art_quick_invoke_stub // Spill registers as per AACPS64 calling convention. INVOKE_STUB_CREATE_FRAME // Fill registers x/w1 to x/w7 and s/d0 to s/d7 with parameters. // Parse the passed shorty to determine which register to load. // Load addresses for routines that load WXSD registers. adr x11, .LstoreW2 adr x12, .LstoreX2 adr x13, .LstoreS0 adr x14, .LstoreD0 // Initialize routine offsets to 0 for integers and floats. // x8 for integers, x15 for floating point. mov x8, #0 mov x15, #0 add x10, x5, #1 // Load shorty address, plus one to skip return value. ldr w1, [x9],#4 // Load "this" parameter, and increment arg pointer. // Loop to fill registers. .LfillRegisters: ldrb w17, [x10], #1 // Load next character in signature, and increment. cbz w17, .LcallFunction // Exit at end of signature. Shorty 0 terminated. cmp w17, #'F' // is this a float? bne .LisDouble cmp x15, # 8*12 // Skip this load if all registers full. beq .Ladvance4 add x17, x13, x15 // Calculate subroutine to jump to. br x17 .LisDouble: cmp w17, #'D' // is this a double? bne .LisLong cmp x15, # 8*12 // Skip this load if all registers full. beq .Ladvance8 add x17, x14, x15 // Calculate subroutine to jump to. br x17 .LisLong: cmp w17, #'J' // is this a long? bne .LisOther cmp x8, # 6*12 // Skip this load if all registers full. beq .Ladvance8 add x17, x12, x8 // Calculate subroutine to jump to. br x17 .LisOther: // Everything else takes one vReg. cmp x8, # 6*12 // Skip this load if all registers full. beq .Ladvance4 add x17, x11, x8 // Calculate subroutine to jump to. br x17 .Ladvance4: add x9, x9, #4 b .LfillRegisters .Ladvance8: add x9, x9, #8 b .LfillRegisters // Macro for loading a parameter into a register. // counter - the register with offset into these tables // size - the size of the register - 4 or 8 bytes. // register - the name of the register to be loaded. .macro LOADREG counter size register return ldr \register , [x9], #\size add \counter, \counter, 12 b \return .endm // Store ints. .LstoreW2: LOADREG x8 4 w2 .LfillRegisters LOADREG x8 4 w3 .LfillRegisters LOADREG x8 4 w4 .LfillRegisters LOADREG x8 4 w5 .LfillRegisters LOADREG x8 4 w6 .LfillRegisters LOADREG x8 4 w7 .LfillRegisters // Store longs. .LstoreX2: LOADREG x8 8 x2 .LfillRegisters LOADREG x8 8 x3 .LfillRegisters LOADREG x8 8 x4 .LfillRegisters LOADREG x8 8 x5 .LfillRegisters LOADREG x8 8 x6 .LfillRegisters LOADREG x8 8 x7 .LfillRegisters // Store singles. .LstoreS0: LOADREG x15 4 s0 .LfillRegisters LOADREG x15 4 s1 .LfillRegisters LOADREG x15 4 s2 .LfillRegisters LOADREG x15 4 s3 .LfillRegisters LOADREG x15 4 s4 .LfillRegisters LOADREG x15 4 s5 .LfillRegisters LOADREG x15 4 s6 .LfillRegisters LOADREG x15 4 s7 .LfillRegisters // Store doubles. .LstoreD0: LOADREG x15 8 d0 .LfillRegisters LOADREG x15 8 d1 .LfillRegisters LOADREG x15 8 d2 .LfillRegisters LOADREG x15 8 d3 .LfillRegisters LOADREG x15 8 d4 .LfillRegisters LOADREG x15 8 d5 .LfillRegisters LOADREG x15 8 d6 .LfillRegisters LOADREG x15 8 d7 .LfillRegisters .LcallFunction: INVOKE_STUB_CALL_AND_RETURN END art_quick_invoke_stub /* extern"C" * void art_quick_invoke_static_stub(ArtMethod *method, x0 * uint32_t *args, x1 * uint32_t argsize, w2 * Thread *self, x3 * JValue *result, x4 * char *shorty); x5 */ ENTRY art_quick_invoke_static_stub // Spill registers as per AACPS64 calling convention. INVOKE_STUB_CREATE_FRAME // Fill registers x/w1 to x/w7 and s/d0 to s/d7 with parameters. // Parse the passed shorty to determine which register to load. // Load addresses for routines that load WXSD registers. adr x11, .LstoreW1_2 adr x12, .LstoreX1_2 adr x13, .LstoreS0_2 adr x14, .LstoreD0_2 // Initialize routine offsets to 0 for integers and floats. // x8 for integers, x15 for floating point. mov x8, #0 mov x15, #0 add x10, x5, #1 // Load shorty address, plus one to skip return value. // Loop to fill registers. .LfillRegisters2: ldrb w17, [x10], #1 // Load next character in signature, and increment. cbz w17, .LcallFunction2 // Exit at end of signature. Shorty 0 terminated. cmp w17, #'F' // is this a float? bne .LisDouble2 cmp x15, # 8*12 // Skip this load if all registers full. beq .Ladvance4_2 add x17, x13, x15 // Calculate subroutine to jump to. br x17 .LisDouble2: cmp w17, #'D' // is this a double? bne .LisLong2 cmp x15, # 8*12 // Skip this load if all registers full. beq .Ladvance8_2 add x17, x14, x15 // Calculate subroutine to jump to. br x17 .LisLong2: cmp w17, #'J' // is this a long? bne .LisOther2 cmp x8, # 7*12 // Skip this load if all registers full. beq .Ladvance8_2 add x17, x12, x8 // Calculate subroutine to jump to. br x17 .LisOther2: // Everything else takes one vReg. cmp x8, # 7*12 // Skip this load if all registers full. beq .Ladvance4_2 add x17, x11, x8 // Calculate subroutine to jump to. br x17 .Ladvance4_2: add x9, x9, #4 b .LfillRegisters2 .Ladvance8_2: add x9, x9, #8 b .LfillRegisters2 // Store ints. .LstoreW1_2: LOADREG x8 4 w1 .LfillRegisters2 LOADREG x8 4 w2 .LfillRegisters2 LOADREG x8 4 w3 .LfillRegisters2 LOADREG x8 4 w4 .LfillRegisters2 LOADREG x8 4 w5 .LfillRegisters2 LOADREG x8 4 w6 .LfillRegisters2 LOADREG x8 4 w7 .LfillRegisters2 // Store longs. .LstoreX1_2: LOADREG x8 8 x1 .LfillRegisters2 LOADREG x8 8 x2 .LfillRegisters2 LOADREG x8 8 x3 .LfillRegisters2 LOADREG x8 8 x4 .LfillRegisters2 LOADREG x8 8 x5 .LfillRegisters2 LOADREG x8 8 x6 .LfillRegisters2 LOADREG x8 8 x7 .LfillRegisters2 // Store singles. .LstoreS0_2: LOADREG x15 4 s0 .LfillRegisters2 LOADREG x15 4 s1 .LfillRegisters2 LOADREG x15 4 s2 .LfillRegisters2 LOADREG x15 4 s3 .LfillRegisters2 LOADREG x15 4 s4 .LfillRegisters2 LOADREG x15 4 s5 .LfillRegisters2 LOADREG x15 4 s6 .LfillRegisters2 LOADREG x15 4 s7 .LfillRegisters2 // Store doubles. .LstoreD0_2: LOADREG x15 8 d0 .LfillRegisters2 LOADREG x15 8 d1 .LfillRegisters2 LOADREG x15 8 d2 .LfillRegisters2 LOADREG x15 8 d3 .LfillRegisters2 LOADREG x15 8 d4 .LfillRegisters2 LOADREG x15 8 d5 .LfillRegisters2 LOADREG x15 8 d6 .LfillRegisters2 LOADREG x15 8 d7 .LfillRegisters2 .LcallFunction2: INVOKE_STUB_CALL_AND_RETURN END art_quick_invoke_static_stub /* * On entry x0 is uintptr_t* gprs_ and x1 is uint64_t* fprs_ */ ENTRY art_quick_do_long_jump // Load FPRs ldp d0, d1, [x1], #16 ldp d2, d3, [x1], #16 ldp d4, d5, [x1], #16 ldp d6, d7, [x1], #16 ldp d8, d9, [x1], #16 ldp d10, d11, [x1], #16 ldp d12, d13, [x1], #16 ldp d14, d15, [x1], #16 ldp d16, d17, [x1], #16 ldp d18, d19, [x1], #16 ldp d20, d21, [x1], #16 ldp d22, d23, [x1], #16 ldp d24, d25, [x1], #16 ldp d26, d27, [x1], #16 ldp d28, d29, [x1], #16 ldp d30, d31, [x1] // Load GPRs // TODO: lots of those are smashed, could optimize. add x0, x0, #30*8 ldp x30, x1, [x0], #-16 ldp x28, x29, [x0], #-16 ldp x26, x27, [x0], #-16 ldp x24, x25, [x0], #-16 ldp x22, x23, [x0], #-16 ldp x20, x21, [x0], #-16 ldp x18, x19, [x0], #-16 ldp x16, x17, [x0], #-16 ldp x14, x15, [x0], #-16 ldp x12, x13, [x0], #-16 ldp x10, x11, [x0], #-16 ldp x8, x9, [x0], #-16 ldp x6, x7, [x0], #-16 ldp x4, x5, [x0], #-16 ldp x2, x3, [x0], #-16 mov sp, x1 // TODO: Is it really OK to use LR for the target PC? mov x0, #0 mov x1, #0 br xLR END art_quick_do_long_jump UNIMPLEMENTED art_quick_handle_fill_data UNIMPLEMENTED art_quick_lock_object UNIMPLEMENTED art_quick_unlock_object /* * Entry from managed code that calls artIsAssignableFromCode and on failure calls * artThrowClassCastException. */ .extern artThrowClassCastException ENTRY art_quick_check_cast // Store arguments and link register sub sp, sp, #32 // Stack needs to be 16b aligned on calls .cfi_adjust_cfa_offset 32 stp x0, x1, [sp] .cfi_rel_offset x0, 0 .cfi_rel_offset x1, 8 stp xSELF, xLR, [sp, #16] .cfi_rel_offset x18, 16 .cfi_rel_offset x30, 24 // Call runtime code bl artIsAssignableFromCode // Check for exception cbz x0, .Lthrow_class_cast_exception // Restore and return ldp x0, x1, [sp] .cfi_restore x0 .cfi_restore x1 ldp xSELF, xLR, [sp, #16] .cfi_restore x18 .cfi_restore x30 add sp, sp, #32 .cfi_adjust_cfa_offset -32 ret .Lthrow_class_cast_exception: // Restore ldp x0, x1, [sp] .cfi_restore x0 .cfi_restore x1 ldp xSELF, xLR, [sp, #16] .cfi_restore x18 .cfi_restore x30 add sp, sp, #32 .cfi_adjust_cfa_offset -32 SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context mov x2, xSELF // pass Thread::Current mov x3, sp // pass SP b artThrowClassCastException // (Class*, Class*, Thread*, SP) brk 0 // We should not return here... END art_quick_check_cast UNIMPLEMENTED art_quick_aput_obj_with_null_and_bound_check UNIMPLEMENTED art_quick_aput_obj_with_bound_check UNIMPLEMENTED art_quick_aput_obj UNIMPLEMENTED art_quick_initialize_static_storage UNIMPLEMENTED art_quick_initialize_type UNIMPLEMENTED art_quick_initialize_type_and_verify_access UNIMPLEMENTED art_quick_get32_static UNIMPLEMENTED art_quick_get64_static UNIMPLEMENTED art_quick_get_obj_static UNIMPLEMENTED art_quick_get32_instance UNIMPLEMENTED art_quick_get64_instance UNIMPLEMENTED art_quick_get_obj_instance UNIMPLEMENTED art_quick_set32_static UNIMPLEMENTED art_quick_set64_static UNIMPLEMENTED art_quick_set_obj_static UNIMPLEMENTED art_quick_set32_instance UNIMPLEMENTED art_quick_set64_instance UNIMPLEMENTED art_quick_set_obj_instance UNIMPLEMENTED art_quick_resolve_string // Macro to facilitate adding new allocation entrypoints. .macro TWO_ARG_DOWNCALL name, entrypoint, return .extern \entrypoint ENTRY \name brk 0 END \name .endm // Macro to facilitate adding new array allocation entrypoints. .macro THREE_ARG_DOWNCALL name, entrypoint, return .extern \entrypoint ENTRY \name brk 0 END \name .endm // Generate the allocation entrypoints for each allocator. GENERATE_ALL_ALLOC_ENTRYPOINTS UNIMPLEMENTED art_quick_test_suspend /* * Called by managed code that is attempting to call a method on a proxy class. On entry * x0 holds the proxy method and x1 holds the receiver; The frame size of the invoked proxy * method agrees with a ref and args callee save frame. */ .extern artQuickProxyInvokeHandler ENTRY art_quick_proxy_invoke_handler SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME str x0, [sp, #0] // place proxy method at bottom of frame mov x2, xSELF // pass Thread::Current mov x3, sp // pass SP bl artQuickProxyInvokeHandler // (Method* proxy method, receiver, Thread*, SP) ldr xSELF, [sp, #200] // Restore self pointer. ldr x2, [xSELF, THREAD_EXCEPTION_OFFSET] cbnz x2, .Lexception_in_proxy // success if no exception is pending RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME_NO_D0 // keep d0 ret // return on success .Lexception_in_proxy: RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME DELIVER_PENDING_EXCEPTION END art_quick_proxy_invoke_handler UNIMPLEMENTED art_quick_imt_conflict_trampoline ENTRY art_quick_resolution_trampoline SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME mov x19, x0 // save the called method mov x2, xSELF mov x3, sp bl artQuickResolutionTrampoline // (called, receiver, Thread*, SP) mov x9, x0 // Remember returned code pointer in x9. mov x0, x19 // Restore the method, before x19 is restored to on-call value RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME cbz x9, 1f br x9 1: RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME DELIVER_PENDING_EXCEPTION END art_quick_resolution_trampoline /* * Generic JNI frame layout: * * #-------------------# * | | * | caller method... | * #-------------------# <--- SP on entry * | Return X30/LR | * | X29/FP | callee save * | X28 | callee save * | X27 | callee save * | X26 | callee save * | X25 | callee save * | X24 | callee save * | X23 | callee save * | X22 | callee save * | X21 | callee save * | X20 | callee save * | X19 | callee save * | X7 | arg7 * | X6 | arg6 * | X5 | arg5 * | X4 | arg4 * | X3 | arg3 * | X2 | arg2 * | X1 | arg1 * | D15 | float arg 8 * | D14 | float arg 8 * | D13 | float arg 8 * | D12 | callee save * | D11 | callee save * | D10 | callee save * | D9 | callee save * | D8 | callee save * | D7 | float arg 8 * | D6 | float arg 7 * | D5 | float arg 6 * | D4 | float arg 5 * | D3 | float arg 4 * | D2 | float arg 3 * | D1 | float arg 2 * | D0 | float arg 1 * | RDI/Method* | <- X0 * #-------------------# * | local ref cookie | // 4B * | SIRT size | // 4B * #-------------------# * | JNI Call Stack | * #-------------------# <--- SP on native call * | | * | Stack for Regs | The trampoline assembly will pop these values * | | into registers for native call * #-------------------# * | Native code ptr | * #-------------------# * | Free scratch | * #-------------------# * | Ptr to (1) | <--- SP * #-------------------# */ /* * Called to do a generic JNI down-call */ ENTRY art_quick_generic_jni_trampoline SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME_INTERNAL str x0, [sp, #0] // Store native ArtMethod* to bottom of stack. // Save SP , so we can have static CFI info. mov x28, sp .cfi_def_cfa_register x28 // This looks the same, but is different: this will be updated to point to the bottom // of the frame when the SIRT is inserted. mov xFP, sp mov x8, #5120 sub sp, sp, x8 // prepare for artQuickGenericJniTrampoline call // (Thread*, SP) // x0 x1 <= C calling convention // xSELF xFP <= where they are mov x0, xSELF // Thread* mov x1, xFP bl artQuickGenericJniTrampoline // (Thread*, sp) // Get the updated pointer. This is the bottom of the frame _with_ SIRT. ldr xFP, [sp] add x9, sp, #8 cmp x0, #0 b.mi .Lentry_error // Check for error, negative value. // release part of the alloca. add x9, x9, x0 // Get the code pointer ldr xIP0, [x9, #0] // Load parameters from frame into registers. // TODO Check with artQuickGenericJniTrampoline. // Also, check again APPCS64 - the stack arguments are interleaved. ldp x0, x1, [x9, #8] ldp x2, x3, [x9, #24] ldp x4, x5, [x9, #40] ldp x6, x7, [x9, #56] ldp d0, d1, [x9, #72] ldp d2, d3, [x9, #88] ldp d4, d5, [x9, #104] ldp d6, d7, [x9, #120] add sp, x9, #136 blr xIP0 // native call. // Restore self pointer. ldr xSELF, [x28, #200] // result sign extension is handled in C code // prepare for artQuickGenericJniEndTrampoline call // (Thread*, SP, result, result_f) // x0 x1 x2 x3 <= C calling convention mov x5, x0 // Save return value mov x0, xSELF // Thread register mov x1, xFP // Stack pointer mov x2, x5 // Result (from saved) fmov x3, d0 // d0 will contain floating point result, but needs to go into x3 bl artQuickGenericJniEndTrampoline // Tear down the alloca. mov sp, x28 .cfi_def_cfa_register sp // Restore self pointer. ldr xSELF, [x28, #200] // Pending exceptions possible. ldr x1, [xSELF, THREAD_EXCEPTION_OFFSET] cbnz x1, .Lexception_in_native // Tear down the callee-save frame. RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME // store into fpr, for when it's a fpr return... fmov d0, x0 ret .Lentry_error: mov sp, x28 .cfi_def_cfa_register sp ldr xSELF, [x28, #200] .Lexception_in_native: RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME DELIVER_PENDING_EXCEPTION END art_quick_generic_jni_trampoline /* * Called to bridge from the quick to interpreter ABI. On entry the arguments match those * of a quick call: * x0 = method being called/to bridge to. * x1..x7, d0..d7 = arguments to that method. */ ENTRY art_quick_to_interpreter_bridge SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME // Set up frame and save arguments. // x0 will contain mirror::ArtMethod* method. mov x1, xSELF // How to get Thread::Current() ??? mov x2, sp // uint64_t artQuickToInterpreterBridge(mirror::ArtMethod* method, Thread* self, // mirror::ArtMethod** sp) bl artQuickToInterpreterBridge RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME // TODO: no need to restore arguments in this case. fmov d0, x0 RETURN_OR_DELIVER_PENDING_EXCEPTION END art_quick_to_interpreter_bridge UNIMPLEMENTED art_quick_instrumentation_entry UNIMPLEMENTED art_quick_instrumentation_exit UNIMPLEMENTED art_quick_deoptimize UNIMPLEMENTED art_quick_mul_long UNIMPLEMENTED art_quick_shl_long UNIMPLEMENTED art_quick_shr_long UNIMPLEMENTED art_quick_ushr_long UNIMPLEMENTED art_quick_indexof UNIMPLEMENTED art_quick_string_compareto