1 /* Defines common perprocessor and assembly macros for use by various stubs. 2 Copyright (C) 2016-2018 Free Software Foundation, Inc. 3 Contributed by Daniel Santos <daniel.santos@pobox.com> 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3, or (at your option) 10 any later version. 11 12 GCC is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 Under Section 7 of GPL version 3, you are granted additional 18 permissions described in the GCC Runtime Library Exception, version 19 3.1, as published by the Free Software Foundation. 20 21 You should have received a copy of the GNU General Public License and 22 a copy of the GCC Runtime Library Exception along with this program; 23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24 <http://www.gnu.org/licenses/>. */ 25 26 #ifndef I386_ASM_H 27 #define I386_ASM_H 28 29 #include "auto-target.h" 30 31 #ifdef __GCC_HAVE_DWARF2_CFI_ASM 32 # define cfi_startproc() .cfi_startproc 33 # define cfi_endproc() .cfi_endproc 34 # define cfi_adjust_cfa_offset(X) .cfi_adjust_cfa_offset X 35 # define cfi_def_cfa_register(X) .cfi_def_cfa_register X 36 # define cfi_def_cfa(R,O) .cfi_def_cfa R, O 37 # define cfi_register(D,S) .cfi_register D, S 38 # define cfi_offset(R,O) .cfi_offset R, O 39 # ifdef __x86_64__ 40 # define cfi_push(X) .cfi_adjust_cfa_offset 8; .cfi_rel_offset X, 0 41 # define cfi_pop(X) .cfi_adjust_cfa_offset -8; .cfi_restore X 42 # else 43 # define cfi_push(X) .cfi_adjust_cfa_offset 4; .cfi_rel_offset X, 0 44 # define cfi_pop(X) .cfi_adjust_cfa_offset -4; .cfi_restore X 45 # endif 46 #else 47 # define cfi_startproc() 48 # define cfi_endproc() 49 # define cfi_adjust_cfa_offset(X) 50 # define cfi_def_cfa_register(X) 51 # define cfi_def_cfa(R,O) 52 # define cfi_register(D,S) 53 # define cfi_offset(R,O) 54 # define cfi_push(X) 55 # define cfi_pop(X) 56 #endif 57 58 #define PASTE2(a, b) PASTE2a(a, b) 59 #define PASTE2a(a, b) a ## b 60 61 /* These macros currently support GNU/Linux, Solaris and Darwin. */ 62 63 #ifdef __ELF__ 64 # define FN_TYPE(fn) .type fn,@function 65 # define FN_SIZE(fn) .size fn,.-fn 66 # ifdef AS_HIDDEN_DIRECTIVE 67 # define FN_HIDDEN(fn) AS_HIDDEN_DIRECTIVE fn 68 # endif 69 #else 70 # define FN_TYPE(fn) 71 # define FN_SIZE(fn) 72 #endif 73 74 #ifndef FN_HIDDEN 75 # define FN_HIDDEN(fn) 76 #endif 77 78 #ifdef __USER_LABEL_PREFIX__ 79 # define ASMNAME(name) PASTE2(__USER_LABEL_PREFIX__, name) 80 #else 81 # define ASMNAME(name) name 82 #endif 83 84 #define FUNC_BEGIN(fn) \ 85 .globl ASMNAME(fn); \ 86 FN_TYPE (ASMNAME(fn)); \ 87 ASMNAME(fn): 88 89 #define HIDDEN_FUNC(fn) \ 90 .globl ASMNAME(fn); \ 91 FN_TYPE(ASMNAME(fn)); \ 92 FN_HIDDEN(ASMNAME(fn)); \ 93 ASMNAME(fn): 94 95 #define FUNC_END(fn) FN_SIZE(ASMNAME(fn)) 96 97 #ifdef MS2SYSV_STUB_AVX 98 # define MS2SYSV_STUB_PREFIX __avx_ 99 # ifdef HAVE_AS_AVX 100 # define MOVAPS vmovaps 101 # endif 102 #elif defined(MS2SYSV_STUB_SSE) 103 # define MS2SYSV_STUB_PREFIX __sse_ 104 # define MOVAPS movaps 105 #endif 106 107 #ifdef MS2SYSV_STUB_PREFIX 108 109 # define MS2SYSV_STUB_BEGIN(base_name) \ 110 HIDDEN_FUNC(PASTE2(MS2SYSV_STUB_PREFIX, base_name)) 111 112 # define MS2SYSV_STUB_END(base_name) \ 113 FUNC_END(PASTE2(MS2SYSV_STUB_PREFIX, base_name)) 114 115 /* If expanding for sse or avx and we have assembler support. */ 116 # ifdef MOVAPS 117 /* Save SSE registers 6-15 using rax as the base address. */ 118 # define SSE_SAVE \ 119 MOVAPS %xmm15,-0x30(%rax); \ 120 MOVAPS %xmm14,-0x20(%rax); \ 121 MOVAPS %xmm13,-0x10(%rax); \ 122 MOVAPS %xmm12, (%rax); \ 123 MOVAPS %xmm11, 0x10(%rax); \ 124 MOVAPS %xmm10, 0x20(%rax); \ 125 MOVAPS %xmm9, 0x30(%rax); \ 126 MOVAPS %xmm8, 0x40(%rax); \ 127 MOVAPS %xmm7, 0x50(%rax); \ 128 MOVAPS %xmm6, 0x60(%rax) 129 130 /* Restore SSE registers 6-15 using rsi as the base address. */ 131 # define SSE_RESTORE \ 132 MOVAPS -0x30(%rsi), %xmm15; \ 133 MOVAPS -0x20(%rsi), %xmm14; \ 134 MOVAPS -0x10(%rsi), %xmm13; \ 135 MOVAPS (%rsi), %xmm12; \ 136 MOVAPS 0x10(%rsi), %xmm11; \ 137 MOVAPS 0x20(%rsi), %xmm10; \ 138 MOVAPS 0x30(%rsi), %xmm9 ; \ 139 MOVAPS 0x40(%rsi), %xmm8 ; \ 140 MOVAPS 0x50(%rsi), %xmm7 ; \ 141 MOVAPS 0x60(%rsi), %xmm6 142 # else /* MOVAPS */ 143 /* If the assembler doesn't support AVX then directly emit machine code 144 for the instructions above. */ 145 # define SSE_SAVE \ 146 .byte 0xc5, 0x78, 0x29, 0x78, 0xd0; /* vmovaps %xmm15,-0x30(%rax) */ \ 147 .byte 0xc5, 0x78, 0x29, 0x70, 0xe0; /* vmovaps %xmm14,-0x20(%rax) */ \ 148 .byte 0xc5, 0x78, 0x29, 0x68, 0xf0; /* vmovaps %xmm13,-0x10(%rax) */ \ 149 .byte 0xc5, 0x78, 0x29, 0x20; /* vmovaps %xmm12, (%rax) */ \ 150 .byte 0xc5, 0x78, 0x29, 0x58, 0x10; /* vmovaps %xmm11, 0x10(%rax) */ \ 151 .byte 0xc5, 0x78, 0x29, 0x50, 0x20; /* vmovaps %xmm10, 0x20(%rax) */ \ 152 .byte 0xc5, 0x78, 0x29, 0x48, 0x30; /* vmovaps %xmm9, 0x30(%rax) */ \ 153 .byte 0xc5, 0x78, 0x29, 0x40, 0x40; /* vmovaps %xmm8, 0x40(%rax) */ \ 154 .byte 0xc5, 0xf8, 0x29, 0x78, 0x50; /* vmovaps %xmm7, 0x50(%rax) */ \ 155 .byte 0xc5, 0xf8, 0x29, 0x70, 0x60; /* vmovaps %xmm6, 0x60(%rax) */ 156 # define SSE_RESTORE \ 157 .byte 0xc5, 0x78, 0x28, 0x7e, 0xd0; /* vmovaps -0x30(%rsi),%xmm15 */ \ 158 .byte 0xc5, 0x78, 0x28, 0x76, 0xe0; /* vmovaps -0x20(%rsi),%xmm14 */ \ 159 .byte 0xc5, 0x78, 0x28, 0x6e, 0xf0; /* vmovaps -0x10(%rsi),%xmm13 */ \ 160 .byte 0xc5, 0x78, 0x28, 0x26; /* vmovaps (%rsi),%xmm12 */ \ 161 .byte 0xc5, 0x78, 0x28, 0x5e, 0x10; /* vmovaps 0x10(%rsi),%xmm11 */ \ 162 .byte 0xc5, 0x78, 0x28, 0x56, 0x20; /* vmovaps 0x20(%rsi),%xmm10 */ \ 163 .byte 0xc5, 0x78, 0x28, 0x4e, 0x30; /* vmovaps 0x30(%rsi),%xmm9 */ \ 164 .byte 0xc5, 0x78, 0x28, 0x46, 0x40; /* vmovaps 0x40(%rsi),%xmm8 */ \ 165 .byte 0xc5, 0xf8, 0x28, 0x7e, 0x50; /* vmovaps 0x50(%rsi),%xmm7 */ \ 166 .byte 0xc5, 0xf8, 0x28, 0x76, 0x60; /* vmovaps 0x60(%rsi),%xmm6 */ 167 # endif /* MOVAPS */ 168 #endif /* MS2SYSV_STUB_PREFIX */ 169 #endif /* I386_ASM_H */ 170