170 lines
5.7 KiB
C
170 lines
5.7 KiB
C
/* Defines common perprocessor and assembly macros for use by various stubs.
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Copyright (C) 2016-2020 Free Software Foundation, Inc.
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Contributed by Daniel Santos <daniel.santos@pobox.com>
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef I386_ASM_H
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#define I386_ASM_H
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#include "auto-target.h"
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#ifdef __GCC_HAVE_DWARF2_CFI_ASM
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# define cfi_startproc() .cfi_startproc
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# define cfi_endproc() .cfi_endproc
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# define cfi_adjust_cfa_offset(X) .cfi_adjust_cfa_offset X
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# define cfi_def_cfa_register(X) .cfi_def_cfa_register X
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# define cfi_def_cfa(R,O) .cfi_def_cfa R, O
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# define cfi_register(D,S) .cfi_register D, S
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# define cfi_offset(R,O) .cfi_offset R, O
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# ifdef __x86_64__
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# define cfi_push(X) .cfi_adjust_cfa_offset 8; .cfi_rel_offset X, 0
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# define cfi_pop(X) .cfi_adjust_cfa_offset -8; .cfi_restore X
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# else
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# define cfi_push(X) .cfi_adjust_cfa_offset 4; .cfi_rel_offset X, 0
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# define cfi_pop(X) .cfi_adjust_cfa_offset -4; .cfi_restore X
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# endif
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#else
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# define cfi_startproc()
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# define cfi_endproc()
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# define cfi_adjust_cfa_offset(X)
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# define cfi_def_cfa_register(X)
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# define cfi_def_cfa(R,O)
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# define cfi_register(D,S)
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# define cfi_offset(R,O)
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# define cfi_push(X)
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# define cfi_pop(X)
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#endif
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#define PASTE2(a, b) PASTE2a(a, b)
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#define PASTE2a(a, b) a ## b
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/* These macros currently support GNU/Linux, Solaris and Darwin. */
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#ifdef __ELF__
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# define FN_TYPE(fn) .type fn,@function
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# define FN_SIZE(fn) .size fn,.-fn
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# ifdef AS_HIDDEN_DIRECTIVE
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# define FN_HIDDEN(fn) AS_HIDDEN_DIRECTIVE fn
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# endif
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#else
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# define FN_TYPE(fn)
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# define FN_SIZE(fn)
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#endif
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#ifndef FN_HIDDEN
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# define FN_HIDDEN(fn)
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#endif
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#ifdef __USER_LABEL_PREFIX__
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# define ASMNAME(name) PASTE2(__USER_LABEL_PREFIX__, name)
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#else
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# define ASMNAME(name) name
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#endif
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#define FUNC_BEGIN(fn) \
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.globl ASMNAME(fn); \
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FN_TYPE (ASMNAME(fn)); \
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ASMNAME(fn):
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#define HIDDEN_FUNC(fn) \
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.globl ASMNAME(fn); \
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FN_TYPE(ASMNAME(fn)); \
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FN_HIDDEN(ASMNAME(fn)); \
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ASMNAME(fn):
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#define FUNC_END(fn) FN_SIZE(ASMNAME(fn))
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#ifdef MS2SYSV_STUB_AVX
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# define MS2SYSV_STUB_PREFIX __avx_
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# ifdef HAVE_AS_AVX
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# define MOVAPS vmovaps
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# endif
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#elif defined(MS2SYSV_STUB_SSE)
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# define MS2SYSV_STUB_PREFIX __sse_
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# define MOVAPS movaps
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#endif
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#ifdef MS2SYSV_STUB_PREFIX
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# define MS2SYSV_STUB_BEGIN(base_name) \
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HIDDEN_FUNC(PASTE2(MS2SYSV_STUB_PREFIX, base_name))
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# define MS2SYSV_STUB_END(base_name) \
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FUNC_END(PASTE2(MS2SYSV_STUB_PREFIX, base_name))
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/* If expanding for sse or avx and we have assembler support. */
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# ifdef MOVAPS
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/* Save SSE registers 6-15 using rax as the base address. */
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# define SSE_SAVE \
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MOVAPS %xmm15,-0x30(%rax); \
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MOVAPS %xmm14,-0x20(%rax); \
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MOVAPS %xmm13,-0x10(%rax); \
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MOVAPS %xmm12, (%rax); \
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MOVAPS %xmm11, 0x10(%rax); \
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MOVAPS %xmm10, 0x20(%rax); \
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MOVAPS %xmm9, 0x30(%rax); \
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MOVAPS %xmm8, 0x40(%rax); \
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MOVAPS %xmm7, 0x50(%rax); \
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MOVAPS %xmm6, 0x60(%rax)
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/* Restore SSE registers 6-15 using rsi as the base address. */
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# define SSE_RESTORE \
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MOVAPS -0x30(%rsi), %xmm15; \
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MOVAPS -0x20(%rsi), %xmm14; \
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MOVAPS -0x10(%rsi), %xmm13; \
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MOVAPS (%rsi), %xmm12; \
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MOVAPS 0x10(%rsi), %xmm11; \
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MOVAPS 0x20(%rsi), %xmm10; \
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MOVAPS 0x30(%rsi), %xmm9 ; \
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MOVAPS 0x40(%rsi), %xmm8 ; \
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MOVAPS 0x50(%rsi), %xmm7 ; \
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MOVAPS 0x60(%rsi), %xmm6
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# else /* MOVAPS */
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/* If the assembler doesn't support AVX then directly emit machine code
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for the instructions above. */
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# define SSE_SAVE \
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.byte 0xc5, 0x78, 0x29, 0x78, 0xd0; /* vmovaps %xmm15,-0x30(%rax) */ \
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.byte 0xc5, 0x78, 0x29, 0x70, 0xe0; /* vmovaps %xmm14,-0x20(%rax) */ \
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.byte 0xc5, 0x78, 0x29, 0x68, 0xf0; /* vmovaps %xmm13,-0x10(%rax) */ \
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.byte 0xc5, 0x78, 0x29, 0x20; /* vmovaps %xmm12, (%rax) */ \
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.byte 0xc5, 0x78, 0x29, 0x58, 0x10; /* vmovaps %xmm11, 0x10(%rax) */ \
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.byte 0xc5, 0x78, 0x29, 0x50, 0x20; /* vmovaps %xmm10, 0x20(%rax) */ \
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.byte 0xc5, 0x78, 0x29, 0x48, 0x30; /* vmovaps %xmm9, 0x30(%rax) */ \
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.byte 0xc5, 0x78, 0x29, 0x40, 0x40; /* vmovaps %xmm8, 0x40(%rax) */ \
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.byte 0xc5, 0xf8, 0x29, 0x78, 0x50; /* vmovaps %xmm7, 0x50(%rax) */ \
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.byte 0xc5, 0xf8, 0x29, 0x70, 0x60; /* vmovaps %xmm6, 0x60(%rax) */
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# define SSE_RESTORE \
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.byte 0xc5, 0x78, 0x28, 0x7e, 0xd0; /* vmovaps -0x30(%rsi),%xmm15 */ \
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.byte 0xc5, 0x78, 0x28, 0x76, 0xe0; /* vmovaps -0x20(%rsi),%xmm14 */ \
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.byte 0xc5, 0x78, 0x28, 0x6e, 0xf0; /* vmovaps -0x10(%rsi),%xmm13 */ \
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.byte 0xc5, 0x78, 0x28, 0x26; /* vmovaps (%rsi),%xmm12 */ \
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.byte 0xc5, 0x78, 0x28, 0x5e, 0x10; /* vmovaps 0x10(%rsi),%xmm11 */ \
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.byte 0xc5, 0x78, 0x28, 0x56, 0x20; /* vmovaps 0x20(%rsi),%xmm10 */ \
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.byte 0xc5, 0x78, 0x28, 0x4e, 0x30; /* vmovaps 0x30(%rsi),%xmm9 */ \
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.byte 0xc5, 0x78, 0x28, 0x46, 0x40; /* vmovaps 0x40(%rsi),%xmm8 */ \
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.byte 0xc5, 0xf8, 0x28, 0x7e, 0x50; /* vmovaps 0x50(%rsi),%xmm7 */ \
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.byte 0xc5, 0xf8, 0x28, 0x76, 0x60; /* vmovaps 0x60(%rsi),%xmm6 */
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# endif /* MOVAPS */
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#endif /* MS2SYSV_STUB_PREFIX */
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#endif /* I386_ASM_H */
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