/* * 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" #include "arch/quick_alloc_entrypoints.S" // For x86, the CFA is esp+4, the address above the pushed return address on the stack. /* * Macro that sets up the callee save frame to conform with * Runtime::CreateCalleeSaveMethod(kSaveAll) */ MACRO2(SETUP_SAVE_ALL_CALLEE_SAVE_FRAME, got_reg, temp_reg) PUSH edi // Save callee saves (ebx is saved/restored by the upcall) PUSH esi PUSH ebp subl MACRO_LITERAL(12), %esp // Grow stack by 3 words. CFI_ADJUST_CFA_OFFSET(12) SETUP_GOT_NOSAVE RAW_VAR(got_reg) // Load Runtime::instance_ from GOT. movl SYMBOL(_ZN3art7Runtime9instance_E)@GOT(REG_VAR(got_reg)), REG_VAR(temp_reg) movl (REG_VAR(temp_reg)), REG_VAR(temp_reg) // Push save all callee-save method. pushl RUNTIME_SAVE_ALL_CALLEE_SAVE_FRAME_OFFSET(REG_VAR(temp_reg)) CFI_ADJUST_CFA_OFFSET(4) // Store esp as the top quick frame. movl %esp, %fs:THREAD_TOP_QUICK_FRAME_OFFSET // Ugly compile-time check, but we only have the preprocessor. // Last +4: implicit return address pushed on stack when caller made call. #if (FRAME_SIZE_SAVE_ALL_CALLEE_SAVE != 3*4 + 16 + 4) #error "SAVE_ALL_CALLEE_SAVE_FRAME(X86) size not as expected." #endif END_MACRO /* * Macro that sets up the callee save frame to conform with * Runtime::CreateCalleeSaveMethod(kRefsOnly) */ MACRO2(SETUP_REFS_ONLY_CALLEE_SAVE_FRAME, got_reg, temp_reg) PUSH edi // Save callee saves (ebx is saved/restored by the upcall) PUSH esi PUSH ebp subl MACRO_LITERAL(12), %esp // Grow stack by 3 words. CFI_ADJUST_CFA_OFFSET(12) SETUP_GOT_NOSAVE RAW_VAR(got_reg) // Load Runtime::instance_ from GOT. movl SYMBOL(_ZN3art7Runtime9instance_E)@GOT(REG_VAR(got_reg)), REG_VAR(temp_reg) movl (REG_VAR(temp_reg)), REG_VAR(temp_reg) // Push save all callee-save method. pushl RUNTIME_REFS_ONLY_CALLEE_SAVE_FRAME_OFFSET(REG_VAR(temp_reg)) CFI_ADJUST_CFA_OFFSET(4) // Store esp as the top quick frame. movl %esp, %fs:THREAD_TOP_QUICK_FRAME_OFFSET // Ugly compile-time check, but we only have the preprocessor. // Last +4: implicit return address pushed on stack when caller made call. #if (FRAME_SIZE_REFS_ONLY_CALLEE_SAVE != 3*4 + 16 + 4) #error "REFS_ONLY_CALLEE_SAVE_FRAME(X86) size not as expected." #endif END_MACRO /* * Macro that sets up the callee save frame to conform with * Runtime::CreateCalleeSaveMethod(kRefsOnly) * and preserves the value of got_reg at entry. */ MACRO2(SETUP_REFS_ONLY_CALLEE_SAVE_FRAME_PRESERVE_GOT_REG, got_reg, temp_reg) PUSH edi // Save callee saves (ebx is saved/restored by the upcall) PUSH esi PUSH ebp pushl REG_VAR(got_reg) // Save got_reg subl MACRO_LITERAL(8), %esp // Grow stack by 2 words. CFI_ADJUST_CFA_OFFSET(8) SETUP_GOT_NOSAVE RAW_VAR(got_reg) // Load Runtime::instance_ from GOT. movl SYMBOL(_ZN3art7Runtime9instance_E)@GOT(REG_VAR(got_reg)), REG_VAR(temp_reg) movl (REG_VAR(temp_reg)), REG_VAR(temp_reg) // Push save all callee-save method. pushl RUNTIME_REFS_ONLY_CALLEE_SAVE_FRAME_OFFSET(REG_VAR(temp_reg)) CFI_ADJUST_CFA_OFFSET(4) // Store esp as the top quick frame. movl %esp, %fs:THREAD_TOP_QUICK_FRAME_OFFSET // Restore got_reg. movl 12(%esp), REG_VAR(got_reg) // Ugly compile-time check, but we only have the preprocessor. // Last +4: implicit return address pushed on stack when caller made call. #if (FRAME_SIZE_REFS_ONLY_CALLEE_SAVE != 3*4 + 16 + 4) #error "REFS_ONLY_CALLEE_SAVE_FRAME(X86) size not as expected." #endif END_MACRO MACRO0(RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME) addl MACRO_LITERAL(16), %esp // Unwind stack up to saved values CFI_ADJUST_CFA_OFFSET(-16) POP ebp // Restore callee saves (ebx is saved/restored by the upcall) POP esi POP edi END_MACRO /* * Macro that sets up the callee save frame to conform with * Runtime::CreateCalleeSaveMethod(kRefsAndArgs) */ MACRO2(SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME, got_reg, temp_reg) PUSH edi // Save callee saves PUSH esi PUSH ebp PUSH ebx // Save args PUSH edx PUSH ecx // Create space for FPR args. subl MACRO_LITERAL(4 * 8), %esp CFI_ADJUST_CFA_OFFSET(4 * 8) // Save FPRs. movsd %xmm0, 0(%esp) movsd %xmm1, 8(%esp) movsd %xmm2, 16(%esp) movsd %xmm3, 24(%esp) SETUP_GOT_NOSAVE RAW_VAR(got_reg) // Load Runtime::instance_ from GOT. movl SYMBOL(_ZN3art7Runtime9instance_E)@GOT(REG_VAR(got_reg)), REG_VAR(temp_reg) movl (REG_VAR(temp_reg)), REG_VAR(temp_reg) // Push save all callee-save method. pushl RUNTIME_REFS_AND_ARGS_CALLEE_SAVE_FRAME_OFFSET(REG_VAR(temp_reg)) CFI_ADJUST_CFA_OFFSET(4) // Store esp as the stop quick frame. movl %esp, %fs:THREAD_TOP_QUICK_FRAME_OFFSET // Ugly compile-time check, but we only have the preprocessor. // Last +4: implicit return address pushed on stack when caller made call. #if (FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE != 7*4 + 4*8 + 4) #error "REFS_AND_ARGS_CALLEE_SAVE_FRAME(X86) size not as expected." #endif END_MACRO /* * Macro that sets up the callee save frame to conform with * Runtime::CreateCalleeSaveMethod(kRefsAndArgs) where the method is passed in EAX. */ MACRO0(SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_WITH_METHOD_IN_EAX) // Save callee and GPR args, mixed together to agree with core spills bitmap. PUSH edi // Save callee saves PUSH esi PUSH ebp PUSH ebx // Save args PUSH edx PUSH ecx // Create space for FPR args. subl MACRO_LITERAL(32), %esp CFI_ADJUST_CFA_OFFSET(32) // Save FPRs. movsd %xmm0, 0(%esp) movsd %xmm1, 8(%esp) movsd %xmm2, 16(%esp) movsd %xmm3, 24(%esp) PUSH eax // Store the ArtMethod reference at the bottom of the stack. // Store esp as the stop quick frame. movl %esp, %fs:THREAD_TOP_QUICK_FRAME_OFFSET END_MACRO MACRO0(RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME) // Restore FPRs. EAX is still on the stack. movsd 4(%esp), %xmm0 movsd 12(%esp), %xmm1 movsd 20(%esp), %xmm2 movsd 28(%esp), %xmm3 addl MACRO_LITERAL(36), %esp // Remove FPRs and EAX. CFI_ADJUST_CFA_OFFSET(-36) POP ecx // Restore args except eax POP edx POP ebx POP ebp // Restore callee saves POP esi POP edi END_MACRO // Restore register and jump to routine // Inputs: EDI contains pointer to code. // Notes: Need to pop EAX too (restores Method*) MACRO0(RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME_AND_JUMP) POP eax // Restore Method* // Restore FPRs. movsd 0(%esp), %xmm0 movsd 8(%esp), %xmm1 movsd 16(%esp), %xmm2 movsd 24(%esp), %xmm3 addl MACRO_LITERAL(32), %esp // Remove FPRs. CFI_ADJUST_CFA_OFFSET(-32) POP ecx // Restore args except eax POP edx POP ebx POP ebp // Restore callee saves POP esi xchgl 0(%esp),%edi // restore EDI and place code pointer as only value on stack ret 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 ebx, ebx // save callee saves for throw // Outgoing argument set up subl MACRO_LITERAL(12), %esp // Alignment padding CFI_ADJUST_CFA_OFFSET(12) pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) call SYMBOL(artDeliverPendingExceptionFromCode) // artDeliverPendingExceptionFromCode(Thread*) UNREACHABLE END_MACRO MACRO2(NO_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) DEFINE_FUNCTION VAR(c_name) SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // save all registers as basis for long jump context // Outgoing argument set up subl MACRO_LITERAL(12), %esp // alignment padding CFI_ADJUST_CFA_OFFSET(12) pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) call CALLVAR(cxx_name) // cxx_name(Thread*) UNREACHABLE END_FUNCTION VAR(c_name) END_MACRO MACRO2(ONE_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) DEFINE_FUNCTION VAR(c_name) SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // 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) pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) PUSH eax // pass arg1 call CALLVAR(cxx_name) // cxx_name(arg1, Thread*) UNREACHABLE END_FUNCTION VAR(c_name) END_MACRO MACRO2(TWO_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) DEFINE_FUNCTION VAR(c_name) SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // save all registers as basis for long jump context // Outgoing argument set up PUSH eax // alignment padding pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) PUSH ecx // pass arg2 PUSH eax // pass arg1 call CALLVAR(cxx_name) // cxx_name(arg1, arg2, Thread*) UNREACHABLE END_FUNCTION VAR(c_name) 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 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 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. */ MACRO1(INVOKE_TRAMPOLINE_BODY, cxx_name) SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME ebx, ebx movl %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 CALLVAR(cxx_name) // cxx_name(arg1, arg2, Thread*, SP) movl %edx, %edi // save code pointer in EDI addl MACRO_LITERAL(20), %esp // Pop arguments skip eax CFI_ADJUST_CFA_OFFSET(-20) // Restore FPRs. movsd 0(%esp), %xmm0 movsd 8(%esp), %xmm1 movsd 16(%esp), %xmm2 movsd 24(%esp), %xmm3 // Remove space for FPR args. addl MACRO_LITERAL(4 * 8), %esp CFI_ADJUST_CFA_OFFSET(-4 * 8) POP ecx // Restore args except eax 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_MACRO MACRO2(INVOKE_TRAMPOLINE, c_name, cxx_name) DEFINE_FUNCTION VAR(c_name) INVOKE_TRAMPOLINE_BODY RAW_VAR(cxx_name) END_FUNCTION VAR(c_name) END_MACRO 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 /* * Helper for quick invocation stub to set up XMM registers. * Increments shorty and arg_array and clobbers temp_char. * Branches to finished if it encounters the end of the shorty. */ MACRO5(LOOP_OVER_SHORTY_LOADING_XMMS, xmm_reg, shorty, arg_array, temp_char, finished) 1: // LOOP movb (REG_VAR(shorty)), REG_VAR(temp_char) // temp_char := *shorty addl MACRO_LITERAL(1), REG_VAR(shorty) // shorty++ cmpb MACRO_LITERAL(0), REG_VAR(temp_char) // if (temp_char == '\0') je VAR(finished) // goto finished cmpb MACRO_LITERAL(68), REG_VAR(temp_char) // if (temp_char == 'D') je 2f // goto FOUND_DOUBLE cmpb MACRO_LITERAL(70), REG_VAR(temp_char) // if (temp_char == 'F') je 3f // goto FOUND_FLOAT addl MACRO_LITERAL(4), REG_VAR(arg_array) // arg_array++ // Handle extra space in arg array taken by a long. cmpb MACRO_LITERAL(74), REG_VAR(temp_char) // if (temp_char != 'J') jne 1b // goto LOOP addl MACRO_LITERAL(4), REG_VAR(arg_array) // arg_array++ jmp 1b // goto LOOP 2: // FOUND_DOUBLE movsd (REG_VAR(arg_array)), REG_VAR(xmm_reg) addl MACRO_LITERAL(8), REG_VAR(arg_array) // arg_array+=2 jmp 4f 3: // FOUND_FLOAT movss (REG_VAR(arg_array)), REG_VAR(xmm_reg) addl MACRO_LITERAL(4), REG_VAR(arg_array) // arg_array++ 4: END_MACRO /* * Helper for quick invocation stub to set up GPR registers. * Increments shorty and arg_array, and returns the current short character in * temp_char. Branches to finished if it encounters the end of the shorty. */ MACRO4(SKIP_OVER_FLOATS, shorty, arg_array, temp_char, finished) 1: // LOOP: movb (REG_VAR(shorty)), REG_VAR(temp_char) // temp_char := *shorty addl MACRO_LITERAL(1), REG_VAR(shorty) // shorty++ cmpb MACRO_LITERAL(0), REG_VAR(temp_char) // if (temp_char == '\0') je VAR(finished) // goto finished cmpb MACRO_LITERAL(70), REG_VAR(temp_char) // if (temp_char == 'F') je 3f // goto SKIP_FLOAT cmpb MACRO_LITERAL(68), REG_VAR(temp_char) // if (temp_char == 'D') je 4f // goto SKIP_DOUBLE jmp 5f // goto end 3: // SKIP_FLOAT addl MACRO_LITERAL(4), REG_VAR(arg_array) // arg_array++ jmp 1b // goto LOOP 4: // SKIP_DOUBLE addl MACRO_LITERAL(8), REG_VAR(arg_array) // arg_array+=2 jmp 1b // goto LOOP 5: END_MACRO /* * Quick invocation stub (non-static). * 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] = shorty */ DEFINE_FUNCTION art_quick_invoke_stub // Save the non-volatiles. PUSH ebp // save ebp PUSH ebx // save ebx PUSH esi // save esi PUSH edi // save edi // Set up argument XMM registers. mov 24+16(%esp), %esi // ESI := shorty + 1 ; ie skip return arg character. addl LITERAL(1), %esi mov 8+16(%esp), %edi // EDI := arg_array + 4 ; ie skip this pointer. addl LITERAL(4), %edi // Clobbers ESI, EDI, EAX. LOOP_OVER_SHORTY_LOADING_XMMS xmm0, esi, edi, al, .Lxmm_setup_finished LOOP_OVER_SHORTY_LOADING_XMMS xmm1, esi, edi, al, .Lxmm_setup_finished LOOP_OVER_SHORTY_LOADING_XMMS xmm2, esi, edi, al, .Lxmm_setup_finished LOOP_OVER_SHORTY_LOADING_XMMS xmm3, esi, edi, al, .Lxmm_setup_finished .balign 16 .Lxmm_setup_finished: mov %esp, %ebp // copy value of stack pointer into base pointer CFI_DEF_CFA_REGISTER(ebp) mov 28(%ebp), %ebx // get arg array size // reserve space for return addr, method*, ebx, ebp, esi, and edi in frame addl LITERAL(36), %ebx // align frame size to 16 bytes andl LITERAL(0xFFFFFFF0), %ebx subl LITERAL(20), %ebx // remove space for return address, ebx, ebp, esi and edi subl %ebx, %esp // reserve stack space for argument array movl LITERAL(0), (%esp) // store null for method* // Copy arg array into stack. movl 28(%ebp), %ecx // ECX = size of args movl 24(%ebp), %esi // ESI = argument array leal 4(%esp), %edi // EDI = just after Method* in stack arguments rep movsb // while (ecx--) { *edi++ = *esi++ } mov 40(%ebp), %esi // ESI := shorty + 1 ; ie skip return arg character. addl LITERAL(1), %esi mov 24(%ebp), %edi // EDI := arg_array mov 0(%edi), %ecx // ECX := this pointer addl LITERAL(4), %edi // EDI := arg_array + 4 ; ie skip this pointer. // Enumerate the possible cases for loading GPRS. // edx (and maybe ebx): SKIP_OVER_FLOATS esi, edi, al, .Lgpr_setup_finished cmpb LITERAL(74), %al // if (al == 'J') goto FOUND_LONG je .LfirstLong // Must be an integer value. movl (%edi), %edx addl LITERAL(4), %edi // arg_array++ // Now check ebx SKIP_OVER_FLOATS esi, edi, al, .Lgpr_setup_finished // Must be first word of a long, or an integer. First word of long doesn't // go into EBX, but can be loaded there anyways, as it is harmless. movl (%edi), %ebx jmp .Lgpr_setup_finished .LfirstLong: movl (%edi), %edx movl 4(%edi), %ebx // Nothing left to load. .Lgpr_setup_finished: mov 20(%ebp), %eax // move method pointer into eax call *ART_METHOD_QUICK_CODE_OFFSET_32(%eax) // call the method mov %ebp, %esp // restore stack pointer CFI_DEF_CFA_REGISTER(esp) POP edi // pop edi POP esi // pop esi POP ebx // pop ebx POP ebp // pop ebp mov 20(%esp), %ecx // get result pointer mov %eax, (%ecx) // store the result assuming its a long, int or Object* mov %edx, 4(%ecx) // store the other half of the result mov 24(%esp), %edx // get the shorty cmpb LITERAL(68), (%edx) // test if result type char == 'D' je .Lreturn_double_quick cmpb LITERAL(70), (%edx) // test if result type char == 'F' je .Lreturn_float_quick ret .Lreturn_double_quick: movsd %xmm0, (%ecx) // store the floating point result ret .Lreturn_float_quick: movss %xmm0, (%ecx) // store the floating point result ret END_FUNCTION art_quick_invoke_stub /* * Quick invocation stub (static). * 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] = shorty */ DEFINE_FUNCTION art_quick_invoke_static_stub // Save the non-volatiles. PUSH ebp // save ebp PUSH ebx // save ebx PUSH esi // save esi PUSH edi // save edi // Set up argument XMM registers. mov 24+16(%esp), %esi // ESI := shorty + 1 ; ie skip return arg character. addl LITERAL(1), %esi mov 8+16(%esp), %edi // EDI := arg_array // Clobbers ESI, EDI, EAX. LOOP_OVER_SHORTY_LOADING_XMMS xmm0, esi, edi, al, .Lxmm_setup_finished2 LOOP_OVER_SHORTY_LOADING_XMMS xmm1, esi, edi, al, .Lxmm_setup_finished2 LOOP_OVER_SHORTY_LOADING_XMMS xmm2, esi, edi, al, .Lxmm_setup_finished2 LOOP_OVER_SHORTY_LOADING_XMMS xmm3, esi, edi, al, .Lxmm_setup_finished2 .balign 16 .Lxmm_setup_finished2: mov %esp, %ebp // copy value of stack pointer into base pointer CFI_DEF_CFA_REGISTER(ebp) mov 28(%ebp), %ebx // get arg array size // reserve space for return addr, method*, ebx, ebp, esi, and edi in frame addl LITERAL(36), %ebx // align frame size to 16 bytes andl LITERAL(0xFFFFFFF0), %ebx subl LITERAL(20), %ebx // remove space for return address, ebx, ebp, esi and edi subl %ebx, %esp // reserve stack space for argument array movl LITERAL(0), (%esp) // store null for method* // Copy arg array into stack. movl 28(%ebp), %ecx // ECX = size of args movl 24(%ebp), %esi // ESI = argument array leal 4(%esp), %edi // EDI = just after Method* in stack arguments rep movsb // while (ecx--) { *edi++ = *esi++ } mov 40(%ebp), %esi // ESI := shorty + 1 ; ie skip return arg character. addl LITERAL(1), %esi mov 24(%ebp), %edi // EDI := arg_array // Enumerate the possible cases for loading GPRS. // ecx (and maybe edx) SKIP_OVER_FLOATS esi, edi, al, .Lgpr_setup_finished2 cmpb LITERAL(74), %al // if (al == 'J') goto FOUND_LONG je .LfirstLong2 // Must be an integer value. Load into ECX. movl (%edi), %ecx addl LITERAL(4), %edi // arg_array++ // Now check edx (and maybe ebx). SKIP_OVER_FLOATS esi, edi, al, .Lgpr_setup_finished2 cmpb LITERAL(74), %al // if (al == 'J') goto FOUND_LONG je .LSecondLong2 // Must be an integer. Load into EDX. movl (%edi), %edx addl LITERAL(4), %edi // arg_array++ // Is there anything for ebx? SKIP_OVER_FLOATS esi, edi, al, .Lgpr_setup_finished2 // Must be first word of a long, or an integer. First word of long doesn't // go into EBX, but can be loaded there anyways, as it is harmless. movl (%edi), %ebx jmp .Lgpr_setup_finished2 .LSecondLong2: // EDX:EBX is long. That is all. movl (%edi), %edx movl 4(%edi), %ebx jmp .Lgpr_setup_finished2 .LfirstLong2: // ECX:EDX is a long movl (%edi), %ecx movl 4(%edi), %edx addl LITERAL(8), %edi // arg_array += 2 // Anything for EBX? SKIP_OVER_FLOATS esi, edi, al, .Lgpr_setup_finished2 // Must be first word of a long, or an integer. First word of long doesn't // go into EBX, but can be loaded there anyways, as it is harmless. movl (%edi), %ebx jmp .Lgpr_setup_finished2 // Nothing left to load. .Lgpr_setup_finished2: mov 20(%ebp), %eax // move method pointer into eax call *ART_METHOD_QUICK_CODE_OFFSET_32(%eax) // call the method mov %ebp, %esp // restore stack pointer CFI_DEF_CFA_REGISTER(esp) POP edi // pop edi POP esi // pop esi POP ebx // pop ebx POP ebp // pop ebp mov 20(%esp), %ecx // get result pointer mov %eax, (%ecx) // store the result assuming its a long, int or Object* mov %edx, 4(%ecx) // store the other half of the result mov 24(%esp), %edx // get the shorty cmpb LITERAL(68), (%edx) // test if result type char == 'D' je .Lreturn_double_quick2 cmpb LITERAL(70), (%edx) // test if result type char == 'F' je .Lreturn_float_quick2 ret .Lreturn_double_quick2: movsd %xmm0, (%ecx) // store the floating point result ret .Lreturn_float_quick2: movss %xmm0, (%ecx) // store the floating point result ret END_FUNCTION art_quick_invoke_static_stub MACRO3(NO_ARG_DOWNCALL, c_name, cxx_name, return_macro) DEFINE_FUNCTION VAR(c_name) SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC // Outgoing argument set up subl MACRO_LITERAL(12), %esp // push padding CFI_ADJUST_CFA_OFFSET(12) pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) call CALLVAR(cxx_name) // cxx_name(Thread*) addl MACRO_LITERAL(16), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-16) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address CALL_MACRO(return_macro) // return or deliver exception END_FUNCTION VAR(c_name) END_MACRO MACRO3(ONE_ARG_DOWNCALL, c_name, cxx_name, return_macro) DEFINE_FUNCTION VAR(c_name) SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC // Outgoing argument set up subl MACRO_LITERAL(8), %esp // push padding CFI_ADJUST_CFA_OFFSET(8) pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) PUSH eax // pass arg1 call CALLVAR(cxx_name) // cxx_name(arg1, Thread*) addl MACRO_LITERAL(16), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-16) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address CALL_MACRO(return_macro) // return or deliver exception END_FUNCTION VAR(c_name) END_MACRO MACRO3(TWO_ARG_DOWNCALL, c_name, cxx_name, return_macro) DEFINE_FUNCTION VAR(c_name) SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC // Outgoing argument set up PUSH eax // push padding pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) PUSH ecx // pass arg2 PUSH eax // pass arg1 call CALLVAR(cxx_name) // cxx_name(arg1, arg2, Thread*) addl MACRO_LITERAL(16), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-16) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address CALL_MACRO(return_macro) // return or deliver exception END_FUNCTION VAR(c_name) END_MACRO MACRO3(THREE_ARG_DOWNCALL, c_name, cxx_name, return_macro) DEFINE_FUNCTION VAR(c_name) SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC // Outgoing argument set up 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 CALLVAR(cxx_name) // cxx_name(arg1, arg2, arg3, Thread*) addl MACRO_LITERAL(16), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-16) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address CALL_MACRO(return_macro) // return or deliver exception END_FUNCTION VAR(c_name) END_MACRO MACRO3(FOUR_ARG_DOWNCALL, c_name, cxx_name, return_macro) DEFINE_FUNCTION VAR(c_name) SETUP_REFS_ONLY_CALLEE_SAVE_FRAME_PRESERVE_GOT_REG ebx, ebx // save ref containing registers for GC // Outgoing argument set up subl MACRO_LITERAL(12), %esp // alignment padding CFI_ADJUST_CFA_OFFSET(12) pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) PUSH ebx // pass arg4 PUSH edx // pass arg3 PUSH ecx // pass arg2 PUSH eax // pass arg1 call CALLVAR(cxx_name) // cxx_name(arg1, arg2, arg3, arg4, Thread*) addl MACRO_LITERAL(32), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-32) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address CALL_MACRO(return_macro) // return or deliver exception END_FUNCTION VAR(c_name) END_MACRO MACRO3(ONE_ARG_REF_DOWNCALL, c_name, cxx_name, return_macro) DEFINE_FUNCTION VAR(c_name) SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC // Outgoing argument set up mov FRAME_SIZE_REFS_ONLY_CALLEE_SAVE(%esp), %ecx // get referrer PUSH eax // push padding pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) PUSH ecx // pass referrer PUSH eax // pass arg1 call CALLVAR(cxx_name) // cxx_name(arg1, referrer, Thread*) addl MACRO_LITERAL(16), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-16) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address CALL_MACRO(return_macro) // return or deliver exception END_FUNCTION VAR(c_name) END_MACRO MACRO3(TWO_ARG_REF_DOWNCALL, c_name, cxx_name, return_macro) DEFINE_FUNCTION VAR(c_name) SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC // Outgoing argument set up mov FRAME_SIZE_REFS_ONLY_CALLEE_SAVE(%esp), %edx // get referrer pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) PUSH edx // pass referrer PUSH ecx // pass arg2 PUSH eax // pass arg1 call CALLVAR(cxx_name) // cxx_name(arg1, arg2, referrer, Thread*) addl MACRO_LITERAL(16), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-16) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address CALL_MACRO(return_macro) // return or deliver exception END_FUNCTION VAR(c_name) END_MACRO MACRO3(THREE_ARG_REF_DOWNCALL, c_name, cxx_name, return_macro) DEFINE_FUNCTION VAR(c_name) SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC // Outgoing argument set up mov FRAME_SIZE_REFS_ONLY_CALLEE_SAVE(%esp), %ebx // get referrer subl MACRO_LITERAL(12), %esp // alignment padding CFI_ADJUST_CFA_OFFSET(12) pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) PUSH ebx // pass referrer PUSH edx // pass arg3 PUSH ecx // pass arg2 PUSH eax // pass arg1 call CALLVAR(cxx_name) // cxx_name(arg1, arg2, arg3, referrer, // Thread*) addl LITERAL(32), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-32) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address CALL_MACRO(return_macro) // return or deliver exception END_FUNCTION VAR(c_name) END_MACRO MACRO0(RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER) 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) cmpl MACRO_LITERAL(0),%fs:THREAD_EXCEPTION_OFFSET // exception field == 0 ? jne 1f // if exception field != 0 goto 1 ret // return 1: // deliver exception on current thread DELIVER_PENDING_EXCEPTION END_MACRO // 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). DEFINE_FUNCTION art_quick_alloc_object_rosalloc // Fast path rosalloc allocation. // eax: uint32_t type_idx/return value, ecx: ArtMethod* // ebx, edx: free PUSH edi movl ART_METHOD_DEX_CACHE_TYPES_OFFSET_32(%ecx), %edx // Load dex cache resolved types array // Load the class (edx) movl 0(%edx, %eax, COMPRESSED_REFERENCE_SIZE), %edx testl %edx, %edx // Check null class jz .Lart_quick_alloc_object_rosalloc_slow_path // Check class status cmpl LITERAL(MIRROR_CLASS_STATUS_INITIALIZED), MIRROR_CLASS_STATUS_OFFSET(%edx) jne .Lart_quick_alloc_object_rosalloc_slow_path // No fake dependence needed on x86 // between status and flags load, // since each load is a load-acquire, // no loads reordering. // Check access flags has // kAccClassIsFinalizable testl LITERAL(ACCESS_FLAGS_CLASS_IS_FINALIZABLE), MIRROR_CLASS_ACCESS_FLAGS_OFFSET(%edx) jnz .Lart_quick_alloc_object_rosalloc_slow_path movl %fs:THREAD_SELF_OFFSET, %ebx // ebx = thread // Check if the thread local allocation // stack has room movl THREAD_LOCAL_ALLOC_STACK_TOP_OFFSET(%ebx), %edi cmpl THREAD_LOCAL_ALLOC_STACK_END_OFFSET(%ebx), %edi jae .Lart_quick_alloc_object_rosalloc_slow_path movl MIRROR_CLASS_OBJECT_SIZE_OFFSET(%edx), %edi // Load the object size (edi) // Check if the size is for a thread // local allocation cmpl LITERAL(ROSALLOC_MAX_THREAD_LOCAL_BRACKET_SIZE), %edi ja .Lart_quick_alloc_object_rosalloc_slow_path decl %edi shrl LITERAL(ROSALLOC_BRACKET_QUANTUM_SIZE_SHIFT), %edi // Calculate the rosalloc bracket index // from object size. // Align up the size by the rosalloc // bracket quantum size and divide // by the quantum size and subtract // by 1. This code is a shorter but // equivalent version. // Load thread local rosalloc run (ebx) movl THREAD_ROSALLOC_RUNS_OFFSET(%ebx, %edi, __SIZEOF_POINTER__), %ebx // Load free_list head (edi), // this will be the return value. movl (ROSALLOC_RUN_FREE_LIST_OFFSET + ROSALLOC_RUN_FREE_LIST_HEAD_OFFSET)(%ebx), %edi test %edi, %edi jz .Lart_quick_alloc_object_rosalloc_slow_path // Point of no slow path. Won't go to // the slow path from here on. Ok to // clobber eax and ecx. movl %edi, %eax // Load the next pointer of the head // and update head of free list with // next pointer movl ROSALLOC_SLOT_NEXT_OFFSET(%eax), %edi movl %edi, (ROSALLOC_RUN_FREE_LIST_OFFSET + ROSALLOC_RUN_FREE_LIST_HEAD_OFFSET)(%ebx) // Decrement size of free list by 1 decl (ROSALLOC_RUN_FREE_LIST_OFFSET + ROSALLOC_RUN_FREE_LIST_SIZE_OFFSET)(%ebx) // Store the class pointer in the // header. This also overwrites the // next 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 edx movl %edx, MIRROR_OBJECT_CLASS_OFFSET(%eax) movl %fs:THREAD_SELF_OFFSET, %ebx // ebx = thread // Push the new object onto the thread // local allocation stack and // increment the thread local // allocation stack top. movl THREAD_LOCAL_ALLOC_STACK_TOP_OFFSET(%ebx), %edi movl %eax, (%edi) addl LITERAL(COMPRESSED_REFERENCE_SIZE), %edi movl %edi, THREAD_LOCAL_ALLOC_STACK_TOP_OFFSET(%ebx) // No fence needed for x86. POP edi ret .Lart_quick_alloc_object_rosalloc_slow_path: POP edi SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC // Outgoing argument set up PUSH eax // alignment padding pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) PUSH ecx PUSH eax call SYMBOL(artAllocObjectFromCodeRosAlloc) // cxx_name(arg0, arg1, Thread*) addl LITERAL(16), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-16) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // resotre frame up to return address RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER // return or deliver exception END_FUNCTION art_quick_alloc_object_rosalloc GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_tlab, TLAB) GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT(_region_tlab, RegionTLAB) ONE_ARG_DOWNCALL art_quick_resolve_string, artResolveStringFromCode, RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER ONE_ARG_DOWNCALL art_quick_initialize_static_storage, artInitializeStaticStorageFromCode, RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER ONE_ARG_DOWNCALL art_quick_initialize_type, artInitializeTypeFromCode, RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER ONE_ARG_DOWNCALL art_quick_initialize_type_and_verify_access, artInitializeTypeAndVerifyAccessFromCode, RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER TWO_ARG_REF_DOWNCALL art_quick_handle_fill_data, artHandleFillArrayDataFromCode, RETURN_IF_EAX_ZERO DEFINE_FUNCTION art_quick_lock_object testl %eax, %eax // null check object/eax jz .Lslow_lock .Lretry_lock: movl MIRROR_OBJECT_LOCK_WORD_OFFSET(%eax), %ecx // ecx := lock word test LITERAL(LOCK_WORD_STATE_MASK), %ecx // test the 2 high bits. jne .Lslow_lock // slow path if either of the two high bits are set. movl %ecx, %edx // save lock word (edx) to keep read barrier bits. andl LITERAL(LOCK_WORD_READ_BARRIER_STATE_MASK_TOGGLED), %ecx // zero the read barrier bits. test %ecx, %ecx jnz .Lalready_thin // lock word contains a thin lock // unlocked case - edx: original lock word, eax: obj. movl %eax, %ecx // remember object in case of retry movl %edx, %eax // eax: lock word zero except for read barrier bits. movl %fs:THREAD_ID_OFFSET, %edx // load thread id. or %eax, %edx // edx: thread id with count of 0 + read barrier bits. lock cmpxchg %edx, MIRROR_OBJECT_LOCK_WORD_OFFSET(%ecx) // eax: old val, edx: new val. jnz .Llock_cmpxchg_fail // cmpxchg failed retry ret .Lalready_thin: // edx: lock word (with high 2 bits zero and original rb bits), eax: obj. movl %fs:THREAD_ID_OFFSET, %ecx // ecx := thread id cmpw %cx, %dx // do we hold the lock already? jne .Lslow_lock movl %edx, %ecx // copy the lock word to check count overflow. andl LITERAL(LOCK_WORD_READ_BARRIER_STATE_MASK_TOGGLED), %ecx // zero the read barrier bits. addl LITERAL(LOCK_WORD_THIN_LOCK_COUNT_ONE), %ecx // increment recursion count for overflow check. test LITERAL(LOCK_WORD_READ_BARRIER_STATE_MASK), %ecx // overflowed if either of the upper two bits (28-29) are set. jne .Lslow_lock // count overflowed so go slow movl %eax, %ecx // save obj to use eax for cmpxchg. movl %edx, %eax // copy the lock word as the old val for cmpxchg. addl LITERAL(LOCK_WORD_THIN_LOCK_COUNT_ONE), %edx // increment recursion count again for real. // update lockword, cmpxchg necessary for read barrier bits. lock cmpxchg %edx, MIRROR_OBJECT_LOCK_WORD_OFFSET(%ecx) // eax: old val, edx: new val. jnz .Llock_cmpxchg_fail // cmpxchg failed retry ret .Llock_cmpxchg_fail: movl %ecx, %eax // restore eax jmp .Lretry_lock .Lslow_lock: SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC // Outgoing argument set up subl LITERAL(8), %esp // alignment padding CFI_ADJUST_CFA_OFFSET(8) pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) PUSH eax // pass object call SYMBOL(artLockObjectFromCode) // artLockObjectFromCode(object, Thread*) addl LITERAL(16), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-16) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address RETURN_IF_EAX_ZERO END_FUNCTION art_quick_lock_object DEFINE_FUNCTION art_quick_lock_object_no_inline SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC // Outgoing argument set up subl LITERAL(8), %esp // alignment padding CFI_ADJUST_CFA_OFFSET(8) pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) PUSH eax // pass object call SYMBOL(artLockObjectFromCode) // artLockObjectFromCode(object, Thread*) addl LITERAL(16), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-16) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address RETURN_IF_EAX_ZERO END_FUNCTION art_quick_lock_object_no_inline DEFINE_FUNCTION art_quick_unlock_object testl %eax, %eax // null check object/eax jz .Lslow_unlock .Lretry_unlock: movl MIRROR_OBJECT_LOCK_WORD_OFFSET(%eax), %ecx // ecx := lock word movl %fs:THREAD_ID_OFFSET, %edx // edx := thread id test LITERAL(LOCK_WORD_STATE_MASK), %ecx jnz .Lslow_unlock // lock word contains a monitor cmpw %cx, %dx // does the thread id match? jne .Lslow_unlock movl %ecx, %edx // copy the lock word to detect new count of 0. andl LITERAL(LOCK_WORD_READ_BARRIER_STATE_MASK_TOGGLED), %edx // zero the read barrier bits. cmpl LITERAL(LOCK_WORD_THIN_LOCK_COUNT_ONE), %edx jae .Lrecursive_thin_unlock // update lockword, cmpxchg necessary for read barrier bits. movl %eax, %edx // edx: obj movl %ecx, %eax // eax: old lock word. andl LITERAL(LOCK_WORD_READ_BARRIER_STATE_MASK), %ecx // ecx: new lock word zero except original rb bits. #ifndef USE_READ_BARRIER movl %ecx, MIRROR_OBJECT_LOCK_WORD_OFFSET(%edx) #else lock cmpxchg %ecx, MIRROR_OBJECT_LOCK_WORD_OFFSET(%edx) // eax: old val, ecx: new val. jnz .Lunlock_cmpxchg_fail // cmpxchg failed retry #endif ret .Lrecursive_thin_unlock: // ecx: original lock word, eax: obj // update lockword, cmpxchg necessary for read barrier bits. movl %eax, %edx // edx: obj movl %ecx, %eax // eax: old lock word. subl LITERAL(LOCK_WORD_THIN_LOCK_COUNT_ONE), %ecx // ecx: new lock word with decremented count. #ifndef USE_READ_BARRIER mov %ecx, MIRROR_OBJECT_LOCK_WORD_OFFSET(%edx) #else lock cmpxchg %ecx, MIRROR_OBJECT_LOCK_WORD_OFFSET(%edx) // eax: old val, ecx: new val. jnz .Lunlock_cmpxchg_fail // cmpxchg failed retry #endif ret .Lunlock_cmpxchg_fail: // edx: obj movl %edx, %eax // restore eax jmp .Lretry_unlock .Lslow_unlock: SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC // Outgoing argument set up subl LITERAL(8), %esp // alignment padding CFI_ADJUST_CFA_OFFSET(8) pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) PUSH eax // pass object call SYMBOL(artUnlockObjectFromCode) // artUnlockObjectFromCode(object, Thread*) addl LITERAL(16), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-16) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address RETURN_IF_EAX_ZERO END_FUNCTION art_quick_unlock_object DEFINE_FUNCTION art_quick_unlock_object_no_inline SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC // Outgoing argument set up subl LITERAL(8), %esp // alignment padding CFI_ADJUST_CFA_OFFSET(8) pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) PUSH eax // pass object call SYMBOL(artUnlockObjectFromCode) // artUnlockObjectFromCode(object, Thread*) addl LITERAL(16), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-16) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address RETURN_IF_EAX_ZERO END_FUNCTION art_quick_unlock_object_no_inline DEFINE_FUNCTION art_quick_is_assignable PUSH eax // alignment padding PUSH ecx // pass arg2 - obj->klass PUSH eax // pass arg1 - checked class call SYMBOL(artIsAssignableFromCode) // (Class* klass, Class* ref_klass) addl LITERAL(12), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-12) ret END_FUNCTION art_quick_is_assignable DEFINE_FUNCTION art_quick_check_cast PUSH eax // alignment padding PUSH ecx // pass arg2 - obj->klass PUSH eax // pass arg1 - checked class call SYMBOL(artIsAssignableFromCode) // (Class* klass, Class* ref_klass) testl %eax, %eax jz 1f // jump forward if not assignable addl LITERAL(12), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-12) ret CFI_ADJUST_CFA_OFFSET(12) // Reset unwind info so following code unwinds. 1: POP eax // pop arguments POP ecx addl LITERAL(4), %esp CFI_ADJUST_CFA_OFFSET(-4) SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // save all registers as basis for long jump context // Outgoing argument set up PUSH eax // alignment padding pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) PUSH ecx // pass arg2 PUSH eax // pass arg1 call SYMBOL(artThrowClassCastException) // (Class* a, Class* b, Thread*) UNREACHABLE END_FUNCTION art_quick_check_cast // Restore reg's value if reg is not the same as exclude_reg, otherwise just adjust stack. MACRO2(POP_REG_NE, reg, exclude_reg) .ifc RAW_VAR(reg), RAW_VAR(exclude_reg) addl MACRO_LITERAL(4), %esp CFI_ADJUST_CFA_OFFSET(-4) .else POP RAW_VAR(reg) .endif END_MACRO /* * Macro to insert read barrier, only used in art_quick_aput_obj. * obj_reg and dest_reg are registers, offset is a defined literal such as * MIRROR_OBJECT_CLASS_OFFSET. * pop_eax is a boolean flag, indicating if eax is popped after the call. * TODO: When read barrier has a fast path, add heap unpoisoning support for the fast path. */ MACRO4(READ_BARRIER, obj_reg, offset, dest_reg, pop_eax) #ifdef USE_READ_BARRIER PUSH eax // save registers used in art_quick_aput_obj PUSH ebx PUSH edx PUSH ecx // Outgoing argument set up pushl MACRO_LITERAL((RAW_VAR(offset))) // pass offset, double parentheses are necessary CFI_ADJUST_CFA_OFFSET(4) PUSH RAW_VAR(obj_reg) // pass obj_reg PUSH eax // pass ref, just pass eax for now since parameter ref is unused call SYMBOL(artReadBarrierSlow) // artReadBarrierSlow(ref, obj_reg, offset) // No need to unpoison return value in eax, artReadBarrierSlow() would do the unpoisoning. .ifnc RAW_VAR(dest_reg), eax movl %eax, REG_VAR(dest_reg) // save loaded ref in dest_reg .endif addl MACRO_LITERAL(12), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-12) POP_REG_NE ecx, RAW_VAR(dest_reg) // Restore args except dest_reg POP_REG_NE edx, RAW_VAR(dest_reg) POP_REG_NE ebx, RAW_VAR(dest_reg) .ifc RAW_VAR(pop_eax), true POP_REG_NE eax, RAW_VAR(dest_reg) .endif #else movl RAW_VAR(offset)(REG_VAR(obj_reg)), REG_VAR(dest_reg) UNPOISON_HEAP_REF RAW_VAR(dest_reg) #endif // USE_READ_BARRIER END_MACRO /* * Entry from managed code for array put operations of objects where the value being stored * needs to be checked for compatibility. * eax = array, ecx = index, edx = value */ DEFINE_FUNCTION art_quick_aput_obj_with_null_and_bound_check testl %eax, %eax jnz SYMBOL(art_quick_aput_obj_with_bound_check) jmp SYMBOL(art_quick_throw_null_pointer_exception) END_FUNCTION art_quick_aput_obj_with_null_and_bound_check DEFINE_FUNCTION art_quick_aput_obj_with_bound_check movl MIRROR_ARRAY_LENGTH_OFFSET(%eax), %ebx cmpl %ebx, %ecx jb SYMBOL(art_quick_aput_obj) mov %ecx, %eax mov %ebx, %ecx jmp SYMBOL(art_quick_throw_array_bounds) END_FUNCTION art_quick_aput_obj_with_bound_check DEFINE_FUNCTION art_quick_aput_obj test %edx, %edx // store of null jz .Ldo_aput_null READ_BARRIER eax, MIRROR_OBJECT_CLASS_OFFSET, ebx, true READ_BARRIER ebx, MIRROR_CLASS_COMPONENT_TYPE_OFFSET, ebx, true // value's type == array's component type - trivial assignability #if defined(USE_READ_BARRIER) READ_BARRIER edx, MIRROR_OBJECT_CLASS_OFFSET, eax, false cmpl %eax, %ebx POP eax // restore eax from the push in the beginning of READ_BARRIER macro // This asymmetric push/pop saves a push of eax and maintains stack alignment. #elif defined(USE_HEAP_POISONING) PUSH eax // save eax movl MIRROR_OBJECT_CLASS_OFFSET(%edx), %eax UNPOISON_HEAP_REF eax cmpl %eax, %ebx POP eax // restore eax #else cmpl MIRROR_OBJECT_CLASS_OFFSET(%edx), %ebx #endif jne .Lcheck_assignability .Ldo_aput: POISON_HEAP_REF edx movl %edx, MIRROR_OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4) movl %fs:THREAD_CARD_TABLE_OFFSET, %edx shrl LITERAL(7), %eax movb %dl, (%edx, %eax) ret .Ldo_aput_null: movl %edx, MIRROR_OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4) ret .Lcheck_assignability: PUSH eax // save arguments PUSH ecx PUSH edx #if defined(USE_READ_BARRIER) subl LITERAL(4), %esp // alignment padding CFI_ADJUST_CFA_OFFSET(4) READ_BARRIER edx, MIRROR_OBJECT_CLASS_OFFSET, eax, true subl LITERAL(4), %esp // alignment padding CFI_ADJUST_CFA_OFFSET(4) PUSH eax // pass arg2 - type of the value to be stored #elif defined(USE_HEAP_POISONING) subl LITERAL(8), %esp // alignment padding CFI_ADJUST_CFA_OFFSET(8) movl MIRROR_OBJECT_CLASS_OFFSET(%edx), %eax UNPOISON_HEAP_REF eax PUSH eax // pass arg2 - type of the value to be stored #else subl LITERAL(8), %esp // alignment padding CFI_ADJUST_CFA_OFFSET(8) pushl MIRROR_OBJECT_CLASS_OFFSET(%edx) // pass arg2 - type of the value to be stored CFI_ADJUST_CFA_OFFSET(4) #endif PUSH ebx // pass arg1 - component type of the array call SYMBOL(artIsAssignableFromCode) // (Class* a, Class* b) addl LITERAL(16), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-16) testl %eax, %eax jz .Lthrow_array_store_exception POP edx POP ecx POP eax POISON_HEAP_REF edx movl %edx, MIRROR_OBJECT_ARRAY_DATA_OFFSET(%eax, %ecx, 4) // do the aput movl %fs:THREAD_CARD_TABLE_OFFSET, %edx shrl LITERAL(7), %eax movb %dl, (%edx, %eax) ret CFI_ADJUST_CFA_OFFSET(12) // 3 POP after the jz for unwinding. .Lthrow_array_store_exception: POP edx POP ecx POP eax SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx // save all registers as basis for long jump context // Outgoing argument set up PUSH eax // alignment padding pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) PUSH edx // pass arg2 - value PUSH eax // pass arg1 - array call SYMBOL(artThrowArrayStoreException) // (array, value, Thread*) UNREACHABLE END_FUNCTION art_quick_aput_obj DEFINE_FUNCTION art_quick_memcpy SETUP_GOT_NOSAVE ebx // clobbers EBX PUSH edx // pass arg3 PUSH ecx // pass arg2 PUSH eax // pass arg1 call PLT_SYMBOL(memcpy) // (void*, const void*, size_t) addl LITERAL(12), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-12) ret END_FUNCTION art_quick_memcpy NO_ARG_DOWNCALL art_quick_test_suspend, artTestSuspendFromCode, ret DEFINE_FUNCTION art_quick_d2l subl LITERAL(12), %esp // alignment padding, room for argument CFI_ADJUST_CFA_OFFSET(12) movsd %xmm0, 0(%esp) // arg a 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(12), %esp // alignment padding CFI_ADJUST_CFA_OFFSET(12) movss %xmm0, 0(%esp) // arg 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_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(artLdiv) // (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_lmod 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(artLmod) // (jlong a, jlong b) addl LITERAL(28), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-28) ret END_FUNCTION art_quick_lmod 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 ONE_ARG_REF_DOWNCALL art_quick_get_boolean_static, artGetBooleanStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION ONE_ARG_REF_DOWNCALL art_quick_get_byte_static, artGetByteStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION ONE_ARG_REF_DOWNCALL art_quick_get_char_static, artGetCharStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION ONE_ARG_REF_DOWNCALL art_quick_get_short_static, artGetShortStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION ONE_ARG_REF_DOWNCALL art_quick_get32_static, artGet32StaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION ONE_ARG_REF_DOWNCALL art_quick_get64_static, artGet64StaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION ONE_ARG_REF_DOWNCALL art_quick_get_obj_static, artGetObjStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION TWO_ARG_REF_DOWNCALL art_quick_get_boolean_instance, artGetBooleanInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION TWO_ARG_REF_DOWNCALL art_quick_get_byte_instance, artGetByteInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION TWO_ARG_REF_DOWNCALL art_quick_get_char_instance, artGetCharInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION TWO_ARG_REF_DOWNCALL art_quick_get_short_instance, artGetShortInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION TWO_ARG_REF_DOWNCALL art_quick_get32_instance, artGet32InstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION TWO_ARG_REF_DOWNCALL art_quick_get64_instance, artGet64InstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION TWO_ARG_REF_DOWNCALL art_quick_get_obj_instance, artGetObjInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION TWO_ARG_REF_DOWNCALL art_quick_set8_static, artSet8StaticFromCode, RETURN_IF_EAX_ZERO TWO_ARG_REF_DOWNCALL art_quick_set16_static, artSet16StaticFromCode, RETURN_IF_EAX_ZERO TWO_ARG_REF_DOWNCALL art_quick_set32_static, artSet32StaticFromCode, RETURN_IF_EAX_ZERO TWO_ARG_REF_DOWNCALL art_quick_set_obj_static, artSetObjStaticFromCode, RETURN_IF_EAX_ZERO THREE_ARG_REF_DOWNCALL art_quick_set8_instance, artSet8InstanceFromCode, RETURN_IF_EAX_ZERO THREE_ARG_REF_DOWNCALL art_quick_set16_instance, artSet16InstanceFromCode, RETURN_IF_EAX_ZERO THREE_ARG_REF_DOWNCALL art_quick_set32_instance, artSet32InstanceFromCode, RETURN_IF_EAX_ZERO THREE_ARG_REF_DOWNCALL art_quick_set_obj_instance, artSetObjInstanceFromCode, RETURN_IF_EAX_ZERO // Call artSet64InstanceFromCode with 4 word size arguments and the referrer. DEFINE_FUNCTION art_quick_set64_instance movd %ebx, %xmm0 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC movd %xmm0, %ebx // Outgoing argument set up subl LITERAL(8), %esp // alignment padding CFI_ADJUST_CFA_OFFSET(8) pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() CFI_ADJUST_CFA_OFFSET(4) pushl (FRAME_SIZE_REFS_ONLY_CALLEE_SAVE+12)(%esp) // pass referrer 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, referrer, Thread*) addl LITERAL(32), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-32) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address RETURN_IF_EAX_ZERO // return or deliver exception END_FUNCTION art_quick_set64_instance // Call artSet64StaticFromCode with 3 word size arguments plus with the referrer in the 2nd position // so that new_val is aligned on even registers were we passing arguments in registers. DEFINE_FUNCTION art_quick_set64_static // TODO: Implement SETUP_GOT_NOSAVE for got_reg = ecx to avoid moving around the registers. movd %ebx, %xmm0 SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx // save ref containing registers for GC movd %xmm0, %ebx mov FRAME_SIZE_REFS_ONLY_CALLEE_SAVE(%esp), %ecx // get referrer subl LITERAL(12), %esp // alignment padding CFI_ADJUST_CFA_OFFSET(12) 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 referrer PUSH eax // pass field_idx call SYMBOL(artSet64StaticFromCode) // (field_idx, referrer, new_val, Thread*) addl LITERAL(32), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-32) RESTORE_REFS_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_proxy_invoke_handler SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_WITH_METHOD_IN_EAX 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(16 + FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE - FRAME_SIZE_REFS_ONLY_CALLEE_SAVE), %esp CFI_ADJUST_CFA_OFFSET(-(16 + FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE - FRAME_SIZE_REFS_ONLY_CALLEE_SAVE)) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception END_FUNCTION art_quick_proxy_invoke_handler /* * Called to resolve an imt conflict. * eax is the conflict ArtMethod. * xmm7 is a hidden argument that holds the target interface method's dex method index. * * Note that this stub writes to eax. * Because of lack of free registers, it also saves and restores edi. */ DEFINE_FUNCTION art_quick_imt_conflict_trampoline PUSH EDI movl 8(%esp), %edi // Load referrer movl ART_METHOD_DEX_CACHE_METHODS_OFFSET_32(%edi), %edi // Load dex cache methods array pushl ART_METHOD_JNI_OFFSET_32(%eax) // Push ImtConflictTable. CFI_ADJUST_CFA_OFFSET(4) movd %xmm7, %eax // get target method index stored in xmm7 movl 0(%edi, %eax, __SIZEOF_POINTER__), %edi // Load interface method popl %eax // Pop ImtConflictTable. CFI_ADJUST_CFA_OFFSET(-4) .Limt_table_iterate: cmpl %edi, 0(%eax) jne .Limt_table_next_entry // We successfully hit an entry in the table. Load the target method // and jump to it. POP EDI movl __SIZEOF_POINTER__(%eax), %eax jmp *ART_METHOD_QUICK_CODE_OFFSET_32(%eax) .Limt_table_next_entry: // If the entry is null, the interface method is not in the ImtConflictTable. cmpl LITERAL(0), 0(%eax) jz .Lconflict_trampoline // Iterate over the entries of the ImtConflictTable. addl LITERAL(2 * __SIZEOF_POINTER__), %eax jmp .Limt_table_iterate .Lconflict_trampoline: // Call the runtime stub to populate the ImtConflictTable and jump to the // resolved method. POP EDI INVOKE_TRAMPOLINE_BODY artInvokeInterfaceTrampoline END_FUNCTION art_quick_imt_conflict_trampoline DEFINE_FUNCTION art_quick_resolution_trampoline SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME ebx, ebx movl %esp, %edi PUSH EDI // pass SP. do not just PUSH ESP; that messes up unwinding 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 CFI_ADJUST_CFA_OFFSET(-16) test %eax, %eax // if code pointer is null goto deliver pending exception jz 1f RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME_AND_JUMP 1: RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME DELIVER_PENDING_EXCEPTION END_FUNCTION art_quick_resolution_trampoline DEFINE_FUNCTION art_quick_generic_jni_trampoline SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_WITH_METHOD_IN_EAX movl %esp, %ebp // save SP at callee-save frame CFI_DEF_CFA_REGISTER(ebp) subl LITERAL(5120), %esp // prepare for artQuickGenericJniTrampoline call // (Thread*, SP) // (esp) 4(esp) <= C calling convention // fs:... ebp <= where they are subl LITERAL(8), %esp // Padding for 16B alignment. pushl %ebp // Pass SP (to ArtMethod). pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). call SYMBOL(artQuickGenericJniTrampoline) // (Thread*, sp) // The C call will have registered the complete save-frame on success. // The result of the call is: // eax: pointer to native code, 0 on error. // edx: pointer to the bottom of the used area of the alloca, can restore stack till there. // Check for error = 0. test %eax, %eax jz .Lexception_in_native // Release part of the alloca. movl %edx, %esp // On x86 there are no registers passed, so nothing to pop here. // Native call. call *%eax // result sign extension is handled in C code // prepare for artQuickGenericJniEndTrampoline call // (Thread*, result, result_f) // (esp) 4(esp) 12(esp) <= C calling convention // fs:... eax:edx fp0 <= where they are subl LITERAL(20), %esp // Padding & pass float result. fstpl (%esp) pushl %edx // Pass int result. pushl %eax pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). call SYMBOL(artQuickGenericJniEndTrampoline) // Pending exceptions possible. mov %fs:THREAD_EXCEPTION_OFFSET, %ebx testl %ebx, %ebx jnz .Lexception_in_native // Tear down the alloca. movl %ebp, %esp CFI_DEF_CFA_REGISTER(esp) // Tear down the callee-save frame. // Remove space for FPR args and EAX addl LITERAL(4 + 4 * 8), %esp CFI_ADJUST_CFA_OFFSET(-(4 + 4 * 8)) POP ecx addl LITERAL(4), %esp // Avoid edx, as it may be part of the result. CFI_ADJUST_CFA_OFFSET(-4) POP ebx POP ebp // Restore callee saves POP esi POP edi // Quick expects the return value to be in xmm0. movd %eax, %xmm0 movd %edx, %xmm1 punpckldq %xmm1, %xmm0 ret .Lexception_in_native: movl %fs:THREAD_TOP_QUICK_FRAME_OFFSET, %esp // Do a call to push a new save-all frame required by the runtime. call .Lexception_call .Lexception_call: DELIVER_PENDING_EXCEPTION END_FUNCTION art_quick_generic_jni_trampoline DEFINE_FUNCTION art_quick_to_interpreter_bridge SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME ebx, ebx // 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) addl LITERAL(16), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-16) // Return eax:edx in xmm0 also. movd %eax, %xmm0 movd %edx, %xmm1 punpckldq %xmm1, %xmm0 addl LITERAL(48), %esp // Remove FPRs and EAX, ECX, EDX, EBX. CFI_ADJUST_CFA_OFFSET(-48) POP ebp // Restore callee saves POP esi POP edi 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_REFS_AND_ARGS_CALLEE_SAVE_FRAME ebx, edx PUSH eax // Save eax which will be clobbered by the callee-save method. subl LITERAL(12), %esp // Align stack. CFI_ADJUST_CFA_OFFSET(12) pushl FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE-4+16(%esp) // Pass LR. CFI_ADJUST_CFA_OFFSET(4) 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*, LR) addl LITERAL(28), %esp // Pop arguments upto saved Method*. CFI_ADJUST_CFA_OFFSET(-28) movl 60(%esp), %edi // Restore edi. movl %eax, 60(%esp) // Place code* over edi, just under return pc. movl SYMBOL(art_quick_instrumentation_exit)@GOT(%ebx), %ebx // Place instrumentation exit as return pc. ebx holds the GOT computed on entry. movl %ebx, 64(%esp) movl 0(%esp), %eax // Restore eax. // Restore FPRs (extra 4 bytes of offset due to EAX push at top). movsd 8(%esp), %xmm0 movsd 16(%esp), %xmm1 movsd 24(%esp), %xmm2 movsd 32(%esp), %xmm3 // Restore GPRs. movl 40(%esp), %ecx // Restore ecx. movl 44(%esp), %edx // Restore edx. movl 48(%esp), %ebx // Restore ebx. movl 52(%esp), %ebp // Restore ebp. movl 56(%esp), %esi // Restore esi. addl LITERAL(60), %esp // Wind stack back upto code*. CFI_ADJUST_CFA_OFFSET(-60) 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. CFI_ADJUST_CFA_OFFSET(4) SETUP_REFS_ONLY_CALLEE_SAVE_FRAME ebx, ebx mov %esp, %ecx // Remember SP subl LITERAL(8), %esp // Save float return value. CFI_ADJUST_CFA_OFFSET(8) movq %xmm0, (%esp) PUSH edx // Save gpr return value. PUSH eax subl LITERAL(16), %esp // Align stack CFI_ADJUST_CFA_OFFSET(16) movq %xmm0, (%esp) // Pass float return value. 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 movq (%esp), %xmm0 // Restore fpr return value. addl LITERAL(8), %esp CFI_ADJUST_CFA_OFFSET(-8) RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME addl LITERAL(4), %esp // Remove fake return pc. CFI_ADJUST_CFA_OFFSET(-4) 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 PUSH ebx // Entry point for a jump. Fake that we were called. SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx subl LITERAL(12), %esp // Align stack. CFI_ADJUST_CFA_OFFSET(12) pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). CFI_ADJUST_CFA_OFFSET(4) call SYMBOL(artDeoptimize) // artDeoptimize(Thread*) UNREACHABLE END_FUNCTION art_quick_deoptimize /* * Compiled code has requested that we deoptimize into the interpreter. The deoptimization * will long jump to the interpreter bridge. */ DEFINE_FUNCTION art_quick_deoptimize_from_compiled_code SETUP_SAVE_ALL_CALLEE_SAVE_FRAME ebx, ebx subl LITERAL(12), %esp // Align stack. CFI_ADJUST_CFA_OFFSET(12) pushl %fs:THREAD_SELF_OFFSET // Pass Thread::Current(). CFI_ADJUST_CFA_OFFSET(4) call SYMBOL(artDeoptimizeFromCompiledCode) // artDeoptimizeFromCompiledCode(Thread*) UNREACHABLE END_FUNCTION art_quick_deoptimize_from_compiled_code /* * 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 MIRROR_STRING_COUNT_OFFSET(%eax), %edx mov MIRROR_STRING_COUNT_OFFSET(%ecx), %ebx lea MIRROR_STRING_VALUE_OFFSET(%eax), %esi lea MIRROR_STRING_VALUE_OFFSET(%ecx), %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 */ jecxz .Lkeep_length repe cmpsw // find nonmatching chars in [%esi] and [%edi], up to length %ecx jne .Lnot_equal .Lkeep_length: POP edi // pop callee save reg POP esi // pop callee save reg ret .balign 16 .Lnot_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 // Return from a nested signal: // Entry: // eax: address of jmp_buf in TLS DEFINE_FUNCTION art_nested_signal_return SETUP_GOT_NOSAVE ebx // sets %ebx for call into PLT movl LITERAL(1), %ecx PUSH ecx // second arg to longjmp (1) PUSH eax // first arg to longjmp (jmp_buf) call PLT_SYMBOL(longjmp) UNREACHABLE END_FUNCTION art_nested_signal_return DEFINE_FUNCTION art_quick_read_barrier_mark PUSH eax // pass arg1 - obj call SYMBOL(artReadBarrierMark) // artReadBarrierMark(obj) addl LITERAL(4), %esp // pop argument CFI_ADJUST_CFA_OFFSET(-4) ret END_FUNCTION art_quick_read_barrier_mark DEFINE_FUNCTION art_quick_read_barrier_slow PUSH edx // pass arg3 - offset PUSH ecx // pass arg2 - obj PUSH eax // pass arg1 - ref call SYMBOL(artReadBarrierSlow) // artReadBarrierSlow(ref, obj, offset) addl LITERAL(12), %esp // pop arguments CFI_ADJUST_CFA_OFFSET(-12) ret END_FUNCTION art_quick_read_barrier_slow DEFINE_FUNCTION art_quick_read_barrier_for_root_slow PUSH eax // pass arg1 - root call SYMBOL(artReadBarrierForRootSlow) // artReadBarrierForRootSlow(root) addl LITERAL(4), %esp // pop argument CFI_ADJUST_CFA_OFFSET(-4) ret END_FUNCTION art_quick_read_barrier_for_root_slow /* * On stack replacement stub. * On entry: * [sp] = return address * [sp + 4] = stack to copy * [sp + 8] = size of stack * [sp + 12] = pc to call * [sp + 16] = JValue* result * [sp + 20] = shorty * [sp + 24] = thread */ DEFINE_FUNCTION art_quick_osr_stub // Save native callee saves. PUSH ebp PUSH ebx PUSH esi PUSH edi mov 4+16(%esp), %esi // ESI = argument array mov 8+16(%esp), %ecx // ECX = size of args mov 12+16(%esp), %ebx // EBX = pc to call mov %esp, %ebp // Save stack pointer andl LITERAL(0xFFFFFFF0), %esp // Align stack PUSH ebp // Save old stack pointer subl LITERAL(12), %esp // Align stack movl LITERAL(0), (%esp) // Store null for ArtMethod* slot call .Losr_entry // Restore stack pointer. addl LITERAL(12), %esp POP ebp mov %ebp, %esp // Restore callee saves. POP edi POP esi POP ebx POP ebp mov 16(%esp), %ecx // Get JValue result mov %eax, (%ecx) // Store the result assuming it is a long, int or Object* mov %edx, 4(%ecx) // Store the other half of the result mov 20(%esp), %edx // Get the shorty cmpb LITERAL(68), (%edx) // Test if result type char == 'D' je .Losr_return_double_quick cmpb LITERAL(70), (%edx) // Test if result type char == 'F' je .Losr_return_float_quick ret .Losr_return_double_quick: movsd %xmm0, (%ecx) // Store the floating point result ret .Losr_return_float_quick: movss %xmm0, (%ecx) // Store the floating point result ret .Losr_entry: subl LITERAL(4), %ecx // Given stack size contains pushed frame pointer, substract it. subl %ecx, %esp mov %esp, %edi // EDI = beginning of stack rep movsb // while (ecx--) { *edi++ = *esi++ } jmp *%ebx END_FUNCTION art_quick_osr_stub // TODO: implement these! UNIMPLEMENTED art_quick_memcmp16