| /* |
| * Copyright (C) 2013 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. |
| */ |
| |
| #ifndef ART_RUNTIME_ARCH_X86_ASM_SUPPORT_X86_S_ |
| #define ART_RUNTIME_ARCH_X86_ASM_SUPPORT_X86_S_ |
| |
| #include "asm_support_x86.h" |
| |
| #if defined(__APPLE__) |
| // Mac OS' as(1) doesn't let you name macro parameters. |
| #define MACRO0(macro_name) .macro macro_name |
| #define MACRO1(macro_name, macro_arg1) .macro macro_name |
| #define MACRO2(macro_name, macro_arg1, macro_args2) .macro macro_name |
| #define MACRO3(macro_name, macro_arg1, macro_args2, macro_args3) .macro macro_name |
| #define END_MACRO .endmacro |
| |
| // Mac OS' as(1) uses $0, $1, and so on for macro arguments, and function names |
| // are mangled with an extra underscore prefix. The use of $x for arguments |
| // mean that literals need to be represented with $$x in macros. |
| #define SYMBOL(name) _ ## name |
| #define VAR(name,index) SYMBOL($index) |
| #define REG_VAR(name,index) %$index |
| #define CALL_MACRO(name,index) $index |
| #define LITERAL(value) $value |
| #define MACRO_LITERAL(value) $$value |
| #else |
| // Regular gas(1) lets you name macro parameters. |
| #define MACRO0(macro_name) .macro macro_name |
| #define MACRO1(macro_name, macro_arg1) .macro macro_name macro_arg1 |
| #define MACRO2(macro_name, macro_arg1, macro_arg2) .macro macro_name macro_arg1, macro_arg2 |
| #define MACRO3(macro_name, macro_arg1, macro_arg2, macro_arg3) .macro macro_name macro_arg1, macro_arg2, macro_arg3 |
| #define END_MACRO .endm |
| |
| // Regular gas(1) uses \argument_name for macro arguments. |
| // We need to turn on alternate macro syntax so we can use & instead or the preprocessor |
| // will screw us by inserting a space between the \ and the name. Even in this mode there's |
| // no special meaning to $, so literals are still just $x. The use of altmacro means % is a |
| // special character meaning care needs to be taken when passing registers as macro arguments. |
| .altmacro |
| #define SYMBOL(name) name |
| #define VAR(name,index) name& |
| #define REG_VAR(name,index) %name |
| #define CALL_MACRO(name,index) name& |
| #define LITERAL(value) $value |
| #define MACRO_LITERAL(value) $value |
| #endif |
| |
| /* Cache alignment for function entry */ |
| MACRO0(ALIGN_FUNCTION_ENTRY) |
| .balign 16 |
| END_MACRO |
| |
| MACRO1(DEFINE_FUNCTION, c_name) |
| .type VAR(c_name, 0), @function |
| .globl VAR(c_name, 0) |
| ALIGN_FUNCTION_ENTRY |
| VAR(c_name, 0): |
| .cfi_startproc |
| END_MACRO |
| |
| MACRO1(END_FUNCTION, c_name) |
| .cfi_endproc |
| .size \c_name, .-\c_name |
| END_MACRO |
| |
| MACRO1(PUSH, reg) |
| pushl REG_VAR(reg, 0) |
| .cfi_adjust_cfa_offset 4 |
| .cfi_rel_offset REG_VAR(reg, 0), 0 |
| END_MACRO |
| |
| MACRO1(POP, reg) |
| popl REG_VAR(reg,0) |
| .cfi_adjust_cfa_offset -4 |
| .cfi_restore REG_VAR(reg,0) |
| END_MACRO |
| |
| #endif // ART_RUNTIME_ARCH_X86_ASM_SUPPORT_X86_S_ |