asm_support_x86.S revision 3f2d031f639b3b9dd4adbf9e70d23de931a9801d
17655f29fabc0a12765de828914a18314382e5a35Ian Rogers/* 27655f29fabc0a12765de828914a18314382e5a35Ian Rogers * Copyright (C) 2013 The Android Open Source Project 37655f29fabc0a12765de828914a18314382e5a35Ian Rogers * 47655f29fabc0a12765de828914a18314382e5a35Ian Rogers * Licensed under the Apache License, Version 2.0 (the "License"); 57655f29fabc0a12765de828914a18314382e5a35Ian Rogers * you may not use this file except in compliance with the License. 67655f29fabc0a12765de828914a18314382e5a35Ian Rogers * You may obtain a copy of the License at 77655f29fabc0a12765de828914a18314382e5a35Ian Rogers * 87655f29fabc0a12765de828914a18314382e5a35Ian Rogers * http://www.apache.org/licenses/LICENSE-2.0 97655f29fabc0a12765de828914a18314382e5a35Ian Rogers * 107655f29fabc0a12765de828914a18314382e5a35Ian Rogers * Unless required by applicable law or agreed to in writing, software 117655f29fabc0a12765de828914a18314382e5a35Ian Rogers * distributed under the License is distributed on an "AS IS" BASIS, 127655f29fabc0a12765de828914a18314382e5a35Ian Rogers * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 137655f29fabc0a12765de828914a18314382e5a35Ian Rogers * See the License for the specific language governing permissions and 147655f29fabc0a12765de828914a18314382e5a35Ian Rogers * limitations under the License. 157655f29fabc0a12765de828914a18314382e5a35Ian Rogers */ 167655f29fabc0a12765de828914a18314382e5a35Ian Rogers 177655f29fabc0a12765de828914a18314382e5a35Ian Rogers#ifndef ART_RUNTIME_ARCH_X86_ASM_SUPPORT_X86_S_ 187655f29fabc0a12765de828914a18314382e5a35Ian Rogers#define ART_RUNTIME_ARCH_X86_ASM_SUPPORT_X86_S_ 197655f29fabc0a12765de828914a18314382e5a35Ian Rogers 207655f29fabc0a12765de828914a18314382e5a35Ian Rogers#include "asm_support_x86.h" 217655f29fabc0a12765de828914a18314382e5a35Ian Rogers 227655f29fabc0a12765de828914a18314382e5a35Ian Rogers#if defined(__APPLE__) 237655f29fabc0a12765de828914a18314382e5a35Ian Rogers // Mac OS' as(1) doesn't let you name macro parameters. 247655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define MACRO0(macro_name) .macro macro_name 257655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define MACRO1(macro_name, macro_arg1) .macro macro_name 267655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define MACRO2(macro_name, macro_arg1, macro_args2) .macro macro_name 277655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define MACRO3(macro_name, macro_arg1, macro_args2, macro_args3) .macro macro_name 287655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define END_MACRO .endmacro 297655f29fabc0a12765de828914a18314382e5a35Ian Rogers 307655f29fabc0a12765de828914a18314382e5a35Ian Rogers // Mac OS' as(1) uses $0, $1, and so on for macro arguments, and function names 317655f29fabc0a12765de828914a18314382e5a35Ian Rogers // are mangled with an extra underscore prefix. The use of $x for arguments 327655f29fabc0a12765de828914a18314382e5a35Ian Rogers // mean that literals need to be represented with $$x in macros. 337655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define SYMBOL(name) _ ## name 343f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define PLT_SYMBOL(name) _ ## name 357655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define VAR(name,index) SYMBOL($index) 363f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define PLT_VAR(name, index) SYMBOL($index) 377655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define REG_VAR(name,index) %$index 387655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define CALL_MACRO(name,index) $index 397655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define LITERAL(value) $value 407655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define MACRO_LITERAL(value) $$value 413f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell 423f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell // Mac OS' doesn't like cfi_* directives 433f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define CFI_STARTPROC 443f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define CFI_ENDPROC 453f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define CFI_ADJUST_CFA_OFFSET(size) 463f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define CFI_DEF_CFA(reg,size) 473f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define CFI_DEF_CFA_REGISTER(reg) 483f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define CFI_RESTORE(reg) 493f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define CFI_REL_OFFSET(reg,size) 503f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell 513f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell // Mac OS' doesn't support certain directives 523f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define FUNCTION_TYPE(name) 533f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define SIZE(name) 547655f29fabc0a12765de828914a18314382e5a35Ian Rogers#else 557655f29fabc0a12765de828914a18314382e5a35Ian Rogers // Regular gas(1) lets you name macro parameters. 567655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define MACRO0(macro_name) .macro macro_name 577655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define MACRO1(macro_name, macro_arg1) .macro macro_name macro_arg1 587655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define MACRO2(macro_name, macro_arg1, macro_arg2) .macro macro_name macro_arg1, macro_arg2 597655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define MACRO3(macro_name, macro_arg1, macro_arg2, macro_arg3) .macro macro_name macro_arg1, macro_arg2, macro_arg3 607655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define END_MACRO .endm 617655f29fabc0a12765de828914a18314382e5a35Ian Rogers 627655f29fabc0a12765de828914a18314382e5a35Ian Rogers // Regular gas(1) uses \argument_name for macro arguments. 637655f29fabc0a12765de828914a18314382e5a35Ian Rogers // We need to turn on alternate macro syntax so we can use & instead or the preprocessor 647655f29fabc0a12765de828914a18314382e5a35Ian Rogers // will screw us by inserting a space between the \ and the name. Even in this mode there's 657655f29fabc0a12765de828914a18314382e5a35Ian Rogers // no special meaning to $, so literals are still just $x. The use of altmacro means % is a 667655f29fabc0a12765de828914a18314382e5a35Ian Rogers // special character meaning care needs to be taken when passing registers as macro arguments. 677655f29fabc0a12765de828914a18314382e5a35Ian Rogers .altmacro 687655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define SYMBOL(name) name 693f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define PLT_SYMBOL(name) name@PLT 707655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define VAR(name,index) name& 713f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define PLT_VAR(name, index) name&@PLT 727655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define REG_VAR(name,index) %name 737655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define CALL_MACRO(name,index) name& 747655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define LITERAL(value) $value 757655f29fabc0a12765de828914a18314382e5a35Ian Rogers #define MACRO_LITERAL(value) $value 763f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell 773f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell // CFI support 783f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define CFI_STARTPROC .cfi_startproc 793f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define CFI_ENDPROC .cfi_endproc 803f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define CFI_ADJUST_CFA_OFFSET(size) .cfi_adjust_cfa_offset size 813f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define CFI_DEF_CFA(reg,size) .cfi_def_cfa reg,size 823f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define CFI_DEF_CFA_REGISTER(reg) .cfi_def_cfa_register reg 833f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define CFI_RESTORE(reg) .cfi_restore reg 843f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define CFI_REL_OFFSET(reg,size) .cfi_rel_offset reg,size 853f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell 863f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define FUNCTION_TYPE(name) .type name&, @function 873f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell #define SIZE(name) .size name, .-name 887655f29fabc0a12765de828914a18314382e5a35Ian Rogers#endif 897655f29fabc0a12765de828914a18314382e5a35Ian Rogers 907655f29fabc0a12765de828914a18314382e5a35Ian Rogers /* Cache alignment for function entry */ 917655f29fabc0a12765de828914a18314382e5a35Ian RogersMACRO0(ALIGN_FUNCTION_ENTRY) 927655f29fabc0a12765de828914a18314382e5a35Ian Rogers .balign 16 937655f29fabc0a12765de828914a18314382e5a35Ian RogersEND_MACRO 947655f29fabc0a12765de828914a18314382e5a35Ian Rogers 957655f29fabc0a12765de828914a18314382e5a35Ian RogersMACRO1(DEFINE_FUNCTION, c_name) 963f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell FUNCTION_TYPE(\c_name) 977655f29fabc0a12765de828914a18314382e5a35Ian Rogers .globl VAR(c_name, 0) 987655f29fabc0a12765de828914a18314382e5a35Ian Rogers ALIGN_FUNCTION_ENTRY 997655f29fabc0a12765de828914a18314382e5a35Ian RogersVAR(c_name, 0): 1003f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell CFI_STARTPROC 1017655f29fabc0a12765de828914a18314382e5a35Ian RogersEND_MACRO 1027655f29fabc0a12765de828914a18314382e5a35Ian Rogers 1037655f29fabc0a12765de828914a18314382e5a35Ian RogersMACRO1(END_FUNCTION, c_name) 1043f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell CFI_ENDPROC 1053f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell SIZE(\c_name) 1067655f29fabc0a12765de828914a18314382e5a35Ian RogersEND_MACRO 1077655f29fabc0a12765de828914a18314382e5a35Ian Rogers 1087655f29fabc0a12765de828914a18314382e5a35Ian RogersMACRO1(PUSH, reg) 109a9abe872ad5ad6128d6f3fb018b6447962303eccMark Mendell pushl REG_VAR(reg, 0) 1103f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell CFI_ADJUST_CFA_OFFSET(4) 1113f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell CFI_REL_OFFSET(REG_VAR(reg, 0), 0) 1127655f29fabc0a12765de828914a18314382e5a35Ian RogersEND_MACRO 1137655f29fabc0a12765de828914a18314382e5a35Ian Rogers 1147655f29fabc0a12765de828914a18314382e5a35Ian RogersMACRO1(POP, reg) 115a9abe872ad5ad6128d6f3fb018b6447962303eccMark Mendell popl REG_VAR(reg,0) 1163f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell CFI_ADJUST_CFA_OFFSET(-4) 1173f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell CFI_RESTORE(REG_VAR(reg,0)) 1187655f29fabc0a12765de828914a18314382e5a35Ian RogersEND_MACRO 1197655f29fabc0a12765de828914a18314382e5a35Ian Rogers 120468532ea115657709bc32ee498e701a4c71762d4Ian RogersMACRO1(UNIMPLEMENTED,name) 1213f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell FUNCTION_TYPE(\name) 122468532ea115657709bc32ee498e701a4c71762d4Ian Rogers .globl VAR(name, 0) 123468532ea115657709bc32ee498e701a4c71762d4Ian Rogers ALIGN_FUNCTION_ENTRY 124468532ea115657709bc32ee498e701a4c71762d4Ian RogersVAR(name, 0): 1253f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell CFI_STARTPROC 126468532ea115657709bc32ee498e701a4c71762d4Ian Rogers int3 127468532ea115657709bc32ee498e701a4c71762d4Ian Rogers int3 1283f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell CFI_ENDPROC 1293f2d031f639b3b9dd4adbf9e70d23de931a9801dMark Mendell SIZE(\name) 130468532ea115657709bc32ee498e701a4c71762d4Ian RogersEND_MACRO 131468532ea115657709bc32ee498e701a4c71762d4Ian Rogers 132a9abe872ad5ad6128d6f3fb018b6447962303eccMark MendellMACRO0(SETUP_GOT_NOSAVE) 133a9abe872ad5ad6128d6f3fb018b6447962303eccMark Mendell call __x86.get_pc_thunk.bx 134a9abe872ad5ad6128d6f3fb018b6447962303eccMark Mendell addl $_GLOBAL_OFFSET_TABLE_, %ebx 135a9abe872ad5ad6128d6f3fb018b6447962303eccMark MendellEND_MACRO 136a9abe872ad5ad6128d6f3fb018b6447962303eccMark Mendell 137a9abe872ad5ad6128d6f3fb018b6447962303eccMark MendellMACRO0(SETUP_GOT) 138a9abe872ad5ad6128d6f3fb018b6447962303eccMark Mendell PUSH ebx 139a9abe872ad5ad6128d6f3fb018b6447962303eccMark Mendell SETUP_GOT_NOSAVE 140a9abe872ad5ad6128d6f3fb018b6447962303eccMark MendellEND_MACRO 141a9abe872ad5ad6128d6f3fb018b6447962303eccMark Mendell 142a9abe872ad5ad6128d6f3fb018b6447962303eccMark MendellMACRO0(UNDO_SETUP_GOT) 143a9abe872ad5ad6128d6f3fb018b6447962303eccMark Mendell POP ebx 144a9abe872ad5ad6128d6f3fb018b6447962303eccMark MendellEND_MACRO 145a9abe872ad5ad6128d6f3fb018b6447962303eccMark Mendell 1467655f29fabc0a12765de828914a18314382e5a35Ian Rogers#endif // ART_RUNTIME_ARCH_X86_ASM_SUPPORT_X86_S_ 147