; ; jsimdext.inc - common declarations ; ; Copyright 2009 Pierre Ossman for Cendio AB ; Copyright 2010 D. R. Commander ; ; Based on ; x86 SIMD extension for IJG JPEG library - version 1.02 ; ; Copyright (C) 1999-2006, MIYASAKA Masaru. ; ; This software is provided 'as-is', without any express or implied ; warranty. In no event will the authors be held liable for any damages ; arising from the use of this software. ; ; Permission is granted to anyone to use this software for any purpose, ; including commercial applications, and to alter it and redistribute it ; freely, subject to the following restrictions: ; ; 1. The origin of this software must not be misrepresented; you must not ; claim that you wrote the original software. If you use this software ; in a product, an acknowledgment in the product documentation would be ; appreciated but is not required. ; 2. Altered source versions must be plainly marked as such, and must not be ; misrepresented as being the original software. ; 3. This notice may not be removed or altered from any source distribution. ; ; [TAB8] ; ========================================================================== ; System-dependent configurations %ifdef WIN32 ; ----(nasm -fwin32 -DWIN32 ...)-------- ; * Microsoft Visual C++ ; * MinGW (Minimalist GNU for Windows) ; * CygWin ; * LCC-Win32 ; -- segment definition -- ; %ifdef __YASM_VER__ %define SEG_TEXT .text align=16 %define SEG_CONST .rdata align=16 %else %define SEG_TEXT .text align=16 public use32 class=CODE %define SEG_CONST .rdata align=16 public use32 class=CONST %endif %elifdef WIN64 ; ----(nasm -fwin64 -DWIN64 ...)-------- ; * Microsoft Visual C++ ; -- segment definition -- ; %ifdef __YASM_VER__ %define SEG_TEXT .text align=16 %define SEG_CONST .rdata align=16 %else %define SEG_TEXT .text align=16 public use64 class=CODE %define SEG_CONST .rdata align=16 public use64 class=CONST %endif %define EXTN(name) name ; foo() -> foo %elifdef OBJ32 ; ----(nasm -fobj -DOBJ32 ...)---------- ; * Borland C++ (Win32) ; -- segment definition -- ; %define SEG_TEXT .text align=16 public use32 class=CODE %define SEG_CONST .data align=16 public use32 class=DATA %elifdef ELF ; ----(nasm -felf[64] -DELF ...)------------ ; * Linux ; * *BSD family Unix using elf format ; * Unix System V, including Solaris x86, UnixWare and SCO Unix ; PIC is the default on Linux %define PIC ; mark stack as non-executable section .note.GNU-stack noalloc noexec nowrite progbits ; -- segment definition -- ; %ifdef __x86_64__ %define SEG_TEXT .text progbits align=16 %define SEG_CONST .rodata progbits align=16 %else %define SEG_TEXT .text progbits alloc exec nowrite align=16 %define SEG_CONST .rodata progbits alloc noexec nowrite align=16 %endif ; To make the code position-independent, append -DPIC to the commandline ; %define GOT_SYMBOL _GLOBAL_OFFSET_TABLE_ ; ELF supports PIC %define EXTN(name) name ; foo() -> foo %elifdef AOUT ; ----(nasm -faoutb/aout -DAOUT ...)---- ; * Older Linux using a.out format (nasm -f aout -DAOUT ...) ; * *BSD family Unix using a.out format (nasm -f aoutb -DAOUT ...) ; -- segment definition -- ; %define SEG_TEXT .text %define SEG_CONST .data ; To make the code position-independent, append -DPIC to the commandline ; %define GOT_SYMBOL __GLOBAL_OFFSET_TABLE_ ; BSD-style a.out supports PIC %elifdef MACHO ; ----(nasm -fmacho -DMACHO ...)-------- ; * NeXTstep/OpenStep/Rhapsody/Darwin/MacOS X (Mach-O format) ; -- segment definition -- ; %define SEG_TEXT .text ;align=16 ; nasm doesn't accept align=16. why? %define SEG_CONST .rodata align=16 ; The generation of position-independent code (PIC) is the default on Darwin. ; %define PIC %define GOT_SYMBOL _MACHO_PIC_ ; Mach-O style code-relative addressing %else ; ----(Other case)---------------------- ; -- segment definition -- ; %define SEG_TEXT .text %define SEG_CONST .data %endif ; ---------------------------------------------- ; ========================================================================== ; -------------------------------------------------------------------------- ; Common types ; %ifdef __x86_64__ %define POINTER qword ; general pointer type %define SIZEOF_POINTER SIZEOF_QWORD ; sizeof(POINTER) %define POINTER_BIT QWORD_BIT ; sizeof(POINTER)*BYTE_BIT %else %define POINTER dword ; general pointer type %define SIZEOF_POINTER SIZEOF_DWORD ; sizeof(POINTER) %define POINTER_BIT DWORD_BIT ; sizeof(POINTER)*BYTE_BIT %endif %define INT dword ; signed integer type %define SIZEOF_INT SIZEOF_DWORD ; sizeof(INT) %define INT_BIT DWORD_BIT ; sizeof(INT)*BYTE_BIT %define FP32 dword ; IEEE754 single %define SIZEOF_FP32 SIZEOF_DWORD ; sizeof(FP32) %define FP32_BIT DWORD_BIT ; sizeof(FP32)*BYTE_BIT %define MMWORD qword ; int64 (MMX register) %define SIZEOF_MMWORD SIZEOF_QWORD ; sizeof(MMWORD) %define MMWORD_BIT QWORD_BIT ; sizeof(MMWORD)*BYTE_BIT ; NASM is buggy and doesn't properly handle operand sizes for SSE ; instructions, so for now we have to define XMMWORD as blank. %define XMMWORD ; int128 (SSE register) %define SIZEOF_XMMWORD SIZEOF_OWORD ; sizeof(XMMWORD) %define XMMWORD_BIT OWORD_BIT ; sizeof(XMMWORD)*BYTE_BIT ; Similar hacks for when we load a dword or MMWORD into an xmm# register %define XMM_DWORD %define XMM_MMWORD %define SIZEOF_BYTE 1 ; sizeof(BYTE) %define SIZEOF_WORD 2 ; sizeof(WORD) %define SIZEOF_DWORD 4 ; sizeof(DWORD) %define SIZEOF_QWORD 8 ; sizeof(QWORD) %define SIZEOF_OWORD 16 ; sizeof(OWORD) %define BYTE_BIT 8 ; CHAR_BIT in C %define WORD_BIT 16 ; sizeof(WORD)*BYTE_BIT %define DWORD_BIT 32 ; sizeof(DWORD)*BYTE_BIT %define QWORD_BIT 64 ; sizeof(QWORD)*BYTE_BIT %define OWORD_BIT 128 ; sizeof(OWORD)*BYTE_BIT ; -------------------------------------------------------------------------- ; External Symbol Name ; %ifndef EXTN %define EXTN(name) _ %+ name ; foo() -> _foo %endif ; -------------------------------------------------------------------------- ; Macros for position-independent code (PIC) support ; %ifndef GOT_SYMBOL %undef PIC %endif %ifdef PIC ; ------------------------------------------- %ifidn GOT_SYMBOL,_MACHO_PIC_ ; -------------------- ; At present, nasm doesn't seem to support PIC generation for Mach-O. ; The PIC support code below is a little tricky. SECTION SEG_CONST const_base: %define GOTOFF(got,sym) (got) + (sym) - const_base %imacro get_GOT 1 ; NOTE: this macro destroys ecx resister. call %%geteip add ecx, byte (%%ref - $) jmp short %%adjust %%geteip: mov ecx, POINTER [esp] ret %%adjust: push ebp xor ebp,ebp ; ebp = 0 %ifidni %1,ebx ; (%1 == ebx) ; db 0x8D,0x9C + jmp near const_base = ; lea ebx, [ecx+ebp*8+(const_base-%%ref)] ; 8D,9C,E9,(offset32) db 0x8D,0x9C ; 8D,9C jmp near const_base ; E9,(const_base-%%ref) %%ref: %else ; (%1 != ebx) ; db 0x8D,0x8C + jmp near const_base = ; lea ecx, [ecx+ebp*8+(const_base-%%ref)] ; 8D,8C,E9,(offset32) db 0x8D,0x8C ; 8D,8C jmp near const_base ; E9,(const_base-%%ref) %%ref: mov %1, ecx %endif ; (%1 == ebx) pop ebp %endmacro %else ; GOT_SYMBOL != _MACHO_PIC_ ---------------- %define GOTOFF(got,sym) (got) + (sym) wrt ..gotoff %imacro get_GOT 1 extern GOT_SYMBOL call %%geteip add %1, GOT_SYMBOL + $$ - $ wrt ..gotpc jmp short %%done %%geteip: mov %1, POINTER [esp] ret %%done: %endmacro %endif ; GOT_SYMBOL == _MACHO_PIC_ ---------------- %imacro pushpic 1.nolist push %1 %endmacro %imacro poppic 1.nolist pop %1 %endmacro %imacro movpic 2.nolist mov %1,%2 %endmacro %else ; !PIC ----------------------------------------- %define GOTOFF(got,sym) (sym) %imacro get_GOT 1.nolist %endmacro %imacro pushpic 1.nolist %endmacro %imacro poppic 1.nolist %endmacro %imacro movpic 2.nolist %endmacro %endif ; PIC ----------------------------------------- ; -------------------------------------------------------------------------- ; Align the next instruction on {2,4,8,16,..}-byte boundary. ; ".balign n,,m" in GNU as ; %define MSKLE(x,y) (~(((y) & 0xFFFF) - ((x) & 0xFFFF)) >> 16) %define FILLB(b,n) (($$-(b)) & ((n)-1)) %imacro alignx 1-2.nolist 0xFFFF %%bs: times MSKLE(FILLB(%%bs,%1),%2) & MSKLE(16,FILLB($,%1)) & FILLB($,%1) \ db 0x90 ; nop times MSKLE(FILLB(%%bs,%1),%2) & FILLB($,%1)/9 \ db 0x8D,0x9C,0x23,0x00,0x00,0x00,0x00 ; lea ebx,[ebx+0x00000000] times MSKLE(FILLB(%%bs,%1),%2) & FILLB($,%1)/7 \ db 0x8D,0xAC,0x25,0x00,0x00,0x00,0x00 ; lea ebp,[ebp+0x00000000] times MSKLE(FILLB(%%bs,%1),%2) & FILLB($,%1)/6 \ db 0x8D,0xAD,0x00,0x00,0x00,0x00 ; lea ebp,[ebp+0x00000000] times MSKLE(FILLB(%%bs,%1),%2) & FILLB($,%1)/4 \ db 0x8D,0x6C,0x25,0x00 ; lea ebp,[ebp+0x00] times MSKLE(FILLB(%%bs,%1),%2) & FILLB($,%1)/3 \ db 0x8D,0x6D,0x00 ; lea ebp,[ebp+0x00] times MSKLE(FILLB(%%bs,%1),%2) & FILLB($,%1)/2 \ db 0x8B,0xED ; mov ebp,ebp times MSKLE(FILLB(%%bs,%1),%2) & FILLB($,%1)/1 \ db 0x90 ; nop %endmacro ; Align the next data on {2,4,8,16,..}-byte boundary. ; %imacro alignz 1.nolist align %1, db 0 ; filling zeros %endmacro %ifdef __x86_64__ %ifdef WIN64 %imacro collect_args 0 push r12 push r13 push r14 push r15 mov r10, rcx mov r11, rdx mov r12, r8 mov r13, r9 mov r14, [rax+48] mov r15, [rax+56] push rsi push rdi sub rsp, SIZEOF_XMMWORD movaps XMMWORD [rsp], xmm6 sub rsp, SIZEOF_XMMWORD movaps XMMWORD [rsp], xmm7 %endmacro %imacro uncollect_args 0 movaps xmm7, XMMWORD [rsp] add rsp, SIZEOF_XMMWORD movaps xmm6, XMMWORD [rsp] add rsp, SIZEOF_XMMWORD pop rdi pop rsi pop r15 pop r14 pop r13 pop r12 %endmacro %else %imacro collect_args 0 push r10 push r11 push r12 push r13 push r14 push r15 mov r10, rdi mov r11, rsi mov r12, rdx mov r13, rcx mov r14, r8 mov r15, r9 %endmacro %imacro uncollect_args 0 pop r15 pop r14 pop r13 pop r12 pop r11 pop r10 %endmacro %endif %endif ; -------------------------------------------------------------------------- ; Defines picked up from the C headers ; %include "jsimdcfg.inc" ; Begin chromium edits %ifdef MACHO ; ----(nasm -fmacho -DMACHO ...)-------- %define PRIVATE :private_extern %elifdef ELF ; ----(nasm -felf[64] -DELF ...)------------ %define PRIVATE :hidden %else %define PRIVATE %endif ; End chromium edits ; --------------------------------------------------------------------------