1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ART_RUNTIME_ARCH_X86_ASM_SUPPORT_X86_S_ 18 #define ART_RUNTIME_ARCH_X86_ASM_SUPPORT_X86_S_ 19 20 #include "asm_support_x86.h" 21 22 #if defined(__APPLE__) 23 // Mac OS' as(1) doesn't let you name macro parameters. 24 #define MACRO0(macro_name) .macro macro_name 25 #define MACRO1(macro_name, macro_arg1) .macro macro_name 26 #define MACRO2(macro_name, macro_arg1, macro_args2) .macro macro_name 27 #define MACRO3(macro_name, macro_arg1, macro_args2, macro_args3) .macro macro_name 28 #define END_MACRO .endmacro 29 30 // Mac OS' as(1) uses $0, $1, and so on for macro arguments, and function names 31 // are mangled with an extra underscore prefix. The use of $x for arguments 32 // mean that literals need to be represented with $$x in macros. 33 #define SYMBOL(name) _ ## name 34 #define VAR(name,index) SYMBOL($index) 35 #define REG_VAR(name,index) %$index 36 #define CALL_MACRO(name,index) $index 37 #define LITERAL(value) $value 38 #define MACRO_LITERAL(value) $$value 39 #else 40 // Regular gas(1) lets you name macro parameters. 41 #define MACRO0(macro_name) .macro macro_name 42 #define MACRO1(macro_name, macro_arg1) .macro macro_name macro_arg1 43 #define MACRO2(macro_name, macro_arg1, macro_arg2) .macro macro_name macro_arg1, macro_arg2 44 #define MACRO3(macro_name, macro_arg1, macro_arg2, macro_arg3) .macro macro_name macro_arg1, macro_arg2, macro_arg3 45 #define END_MACRO .endm 46 47 // Regular gas(1) uses \argument_name for macro arguments. 48 // We need to turn on alternate macro syntax so we can use & instead or the preprocessor 49 // will screw us by inserting a space between the \ and the name. Even in this mode there's 50 // no special meaning to $, so literals are still just $x. The use of altmacro means % is a 51 // special character meaning care needs to be taken when passing registers as macro arguments. 52 .altmacro 53 #define SYMBOL(name) name 54 #define VAR(name,index) name& 55 #define REG_VAR(name,index) %name 56 #define CALL_MACRO(name,index) name& 57 #define LITERAL(value) $value 58 #define MACRO_LITERAL(value) $value 59 #endif 60 61 /* Cache alignment for function entry */ 62 MACRO0(ALIGN_FUNCTION_ENTRY) 63 .balign 16 64 END_MACRO 65 66 MACRO1(DEFINE_FUNCTION, c_name) 67 .type VAR(c_name, 0), @function 68 .globl VAR(c_name, 0) 69 ALIGN_FUNCTION_ENTRY 70 VAR(c_name, 0): 71 .cfi_startproc 72 END_MACRO 73 74 MACRO1(END_FUNCTION, c_name) 75 .cfi_endproc 76 .size \c_name, .-\c_name 77 END_MACRO 78 79 MACRO1(PUSH, reg) 80 pushl REG_VAR(reg, 0) 81 .cfi_adjust_cfa_offset 4 82 .cfi_rel_offset REG_VAR(reg, 0), 0 83 END_MACRO 84 85 MACRO1(POP, reg) 86 popl REG_VAR(reg,0) 87 .cfi_adjust_cfa_offset -4 88 .cfi_restore REG_VAR(reg,0) 89 END_MACRO 90 91 MACRO1(UNIMPLEMENTED,name) 92 .type VAR(name, 0), @function 93 .globl VAR(name, 0) 94 ALIGN_FUNCTION_ENTRY 95 VAR(name, 0): 96 .cfi_startproc 97 int3 98 int3 99 .cfi_endproc 100 .size \name, .-\name 101 END_MACRO 102 103 #endif // ART_RUNTIME_ARCH_X86_ASM_SUPPORT_X86_S_ 104
