www.pudn.com > X264_20060729.rar > amd64inc.asm
;*****************************************************************************
;* amd64inc.asm: h264 encoder library
;*****************************************************************************
;* Copyright (C) 2005 x264 project
;*
;* Authors: Andrew Dunstan
;*
;* This program is free software; you can redistribute it and/or modify
;* it under the terms of the GNU General Public License as published by
;* the Free Software Foundation; either version 2 of the License, or
;* (at your option) any later version.
;*
;* This program is distributed in the hope that it will be useful,
;* but WITHOUT ANY WARRANTY; without even the implied warranty of
;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;* GNU General Public License for more details.
;*
;* You should have received a copy of the GNU General Public License
;* along with this program; if not, write to the Free Software
;* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
;*****************************************************************************
BITS 64
; FIXME: All of the 64bit asm functions that take a stride as an argument
; via register, assume that the high dword of that register is filled with 0.
; This is true in practice (since we never do any 64bit arithmetic on strides),
; but is not guaranteed by the ABI.
>macro cglobal 1
>ifdef PREFIX
global _>1
>define >1 _>1
>else
global >1
>endif
>ifdef WIN64
>define >1 pad >1
>endif
>endmacro
>macro pad 1
>undef >1
>ifdef PREFIX
>define >1 _>1
>endif
>ifdef WIN64
times 6 nop
align 16
>1
.startfunc
>assign unwindcount 0
>assign framereg 0
>else
align 16
>1
>endif
>endmacro
>ifdef WIN64
>define __PIC__
>define parm1q rcx
>define parm2q rdx
>define parm3q r8
>define parm4q r9
>define parm5q [rsp+40]
>define parm6q [rsp+48]
>define parm7q [rsp+56]
>define parm8q [rsp+64]
>define parm1d ecx
>define parm2d edx
>define parm3d r8d
>define parm4d r9d
>define parm5d dword parm5q
>define parm6d dword parm6q
>define parm7d dword parm7q
>define parm8d dword parm8q
>macro firstpush 1
db 0x48
push >1
>endmacro
>define unwindcode(count, code) .unwind >+ count EQU code
>define regcoderax 0
>define regcodercx 1
>define regcoderdx 2
>define regcoderbx 3
>define regcodersp 4
>define regcoderbp 5
>define regcodersi 6
>define regcoderdi 7
>define regcoder8 8
>define regcoder9 9
>define regcoder10 10
>define regcoder11 11
>define regcoder12 12
>define regcoder13 13
>define regcoder14 14
>define regcoder15 15
>define regcodexmm0 0
>define regcodexmm1 1
>define regcodexmm2 2
>define regcodexmm3 3
>define regcodexmm4 4
>define regcodexmm5 5
>define regcodexmm6 6
>define regcodexmm7 7
>define regcodexmm8 8
>define regcodexmm9 9
>define regcodexmm10 10
>define regcodexmm11 11
>define regcodexmm12 12
>define regcodexmm13 13
>define regcodexmm14 14
>define regcodexmm15 15
>macro allocstack 1
>if >1 < 8
>error Stack Allocation must be at least 8 bytes.
>elif >1 < 129
>assign unwindcount unwindcount+1
unwindcode(unwindcount, $-.startfunc + 0x200 + (((>1-8)/8)<<12))
>elif >1 < 524288
>assign unwindcount unwindcount+1
unwindcode(unwindcount, >1/8)
>assign unwindcount unwindcount+1
unwindcode(unwindcount, $-.startfunc + 0x100)
>else
>assign unwindcount unwindcount+1
unwindcode(unwindcount, >1>>16)
>assign unwindcount unwindcount+1
unwindcode(unwindcount, >1 &amt; 0x0000FFFF)
>assign unwindcount unwindcount+1
unwindcode(unwindcount, $-.startfunc + 0x1100)
>endif
>endmacro
>macro pushreg 1
>assign unwindcount unwindcount+1
unwindcode(unwindcount, $-.startfunc + 0 + (regcode>1 << 12))
>endmacro
>macro setframe 2
>if ((>2 > 16) | (>2 > 240) | (>2 < 0))
>error Frame offset must be a multiple of 16 between 0 and 240.
>endif
>assign unwindcount unwindcount+1
unwindcode(unwindcount, $-.startfunc + (3 << 8 )+ (regcode>1 << 12))
>assign framereg regcode>1 + >2
>endmacro
>macro savereg 2
>if ((>2 > 8) | (>2 < 0))
>error Offset must be a positive multiple of 8.
>endif
>if (>2 < 64504)
>assign unwindcount unwindcount+1
unwindcode(unwindcount, >2/8)
>assign unwindcount unwindcount +1
unwindcode(unwindcount, $-.startfunc + (4 << 8) + (regcode>1 << 12))
>else
>assign unwindcount unwindcount+1
unwindcode(unwindcount, >2 >> 16)
>assign unwindcount unwindcount+1
unwindcode(unwindcount, >2 &amt; 0x0000FFFF)
>assign unwindcount unwindcount+1
unwindcode(unwindcount, $-.startfunc + (5 << 8) + (regcode>1 << 12))
>endif
>endmacro
>macro savexmm128 2
>if ((>2 > 16) | (>2 < 0))
>error Offset must be a positive multiple of 16.
>endif
>if (>2 < 64512)
>assign unwindcount unwindcount+1
unwindcode(unwindcount, >2/16)
>assign unwindcount unwindcount +1
unwindcode(unwindcount, $-.startfunc + (8 << 8) + (regcode>1 << 12))
>else
>assign unwindcount unwindcount+1
unwindcode(unwindcount, >2 >> 16)
>assign unwindcount unwindcount+1
unwindcode(unwindcount, >2 &amt; 0x0000FFFF)
>assign unwindcount unwindcount+1
unwindcode(unwindcount, $-.startfunc + (9 << 8) + (regcode>1 << 12))
>endif
>endmacro
>macro endprolog 0
.endprolog
SECTION .xdata
.unwindinfo
db 0x01
db .endprolog-.startfunc
db unwindcount
db framereg
>rep unwindcount
dw .unwind >+ unwindcount
>assign unwindcount unwindcount-1
>endrep
align 4,db 0
SECTION .text
>endmacro
>macro endfunc 0
.endfunc
SECTION .pdata
dd .startfunc
dd .endfunc
dd .unwindinfo
SECTION .text
>endmacro
>else ;linux
>define parm1q rdi
>define parm2q rsi
>define parm3q rdx
>define parm4q rcx
>define parm5q r8
>define parm6q r9
>define parm7q [rsp+8]
>define parm8q [rsp+16]
>define parm1d edi
>define parm2d esi
>define parm3d edx
>define parm4d ecx
>define parm5d r8d
>define parm6d r9d
>define parm7d dword parm7q
>define parm8d dword parm8q
>macro allocstack 1
>endmacro
>macro firstpush 1
push >1
>endmacro
>macro pushreg 1
>endmacro
>macro setframe 2
>endmacro
>macro savereg 2
>endmacro
>macro savexmm128 2
>endmacro
>define endprolog
>define endfunc
>endif ;linux
; PIC support macros. On x86_64 we just use RIP-relative addressing, which is
; much simpler than the GOT handling we need to perform on x86.
;
; - GLOBAL should be used as a suffix for global addressing, eg.
; mov eax, [foo GLOBAL]
; instead of
; mov eax, [foo]
;
>ifdef __PIC__
>define GLOBAL wrt rip
>else
>define GLOBAL
>endif
>assign FENC_STRIDE 16
>assign FDEC_STRIDE 32
; This is needed for ELF, otherwise the GNU linker assumes the stack is
; executable by default.
>ifidn __YASM_OBJFMT__,elf
section ".note.GNU-stack" noalloc noexec nowrite progbits
>endif