diff -r 328264029b6e -r f3840de881bd misc/libtremor/tremor/asm_arm.h --- a/misc/libtremor/tremor/asm_arm.h Tue Jul 23 14:01:23 2013 -0700 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,243 +0,0 @@ -/******************************************************************** - * * - * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * - * * - * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * - * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * - * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * - * * - * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * - * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * - * * - ******************************************************************** - - function: arm7 and later wide math functions - - ********************************************************************/ - -#ifdef _ARM_ASSEM_ - -#if !defined(_V_WIDE_MATH) && !defined(_LOW_ACCURACY_) -#define _V_WIDE_MATH - -static inline ogg_int32_t MULT32(ogg_int32_t x, ogg_int32_t y) { - int lo,hi; - asm volatile("smull\t%0, %1, %2, %3" - : "=&r"(lo),"=&r"(hi) - : "%r"(x),"r"(y) - : "cc"); - return(hi); -} - -static inline ogg_int32_t MULT31(ogg_int32_t x, ogg_int32_t y) { - return MULT32(x,y)<<1; -} - -static inline ogg_int32_t MULT31_SHIFT15(ogg_int32_t x, ogg_int32_t y) { - int lo,hi; - asm volatile("smull %0, %1, %2, %3\n\t" - "movs %0, %0, lsr #15\n\t" - "adc %1, %0, %1, lsl #17\n\t" - : "=&r"(lo),"=&r"(hi) - : "%r"(x),"r"(y) - : "cc"); - return(hi); -} - -#define MB() asm volatile ("" : : : "memory") - -static inline void XPROD32(ogg_int32_t a, ogg_int32_t b, - ogg_int32_t t, ogg_int32_t v, - ogg_int32_t *x, ogg_int32_t *y) -{ - int x1, y1, l; - asm( "smull %0, %1, %4, %6\n\t" - "smlal %0, %1, %5, %7\n\t" - "rsb %3, %4, #0\n\t" - "smull %0, %2, %5, %6\n\t" - "smlal %0, %2, %3, %7" - : "=&r" (l), "=&r" (x1), "=&r" (y1), "=r" (a) - : "3" (a), "r" (b), "r" (t), "r" (v) - : "cc" ); - *x = x1; - MB(); - *y = y1; -} - -static inline void XPROD31(ogg_int32_t a, ogg_int32_t b, - ogg_int32_t t, ogg_int32_t v, - ogg_int32_t *x, ogg_int32_t *y) -{ - int x1, y1, l; - asm( "smull %0, %1, %4, %6\n\t" - "smlal %0, %1, %5, %7\n\t" - "rsb %3, %4, #0\n\t" - "smull %0, %2, %5, %6\n\t" - "smlal %0, %2, %3, %7" - : "=&r" (l), "=&r" (x1), "=&r" (y1), "=r" (a) - : "3" (a), "r" (b), "r" (t), "r" (v) - : "cc" ); - *x = x1 << 1; - MB(); - *y = y1 << 1; -} - -static inline void XNPROD31(ogg_int32_t a, ogg_int32_t b, - ogg_int32_t t, ogg_int32_t v, - ogg_int32_t *x, ogg_int32_t *y) -{ - int x1, y1, l; - asm( "rsb %2, %4, #0\n\t" - "smull %0, %1, %3, %5\n\t" - "smlal %0, %1, %2, %6\n\t" - "smull %0, %2, %4, %5\n\t" - "smlal %0, %2, %3, %6" - : "=&r" (l), "=&r" (x1), "=&r" (y1) - : "r" (a), "r" (b), "r" (t), "r" (v) - : "cc" ); - *x = x1 << 1; - MB(); - *y = y1 << 1; -} - -#endif - -#ifndef _V_CLIP_MATH -#define _V_CLIP_MATH - -static inline ogg_int32_t CLIP_TO_15(ogg_int32_t x) { - int tmp; - asm volatile("subs %1, %0, #32768\n\t" - "movpl %0, #0x7f00\n\t" - "orrpl %0, %0, #0xff\n" - "adds %1, %0, #32768\n\t" - "movmi %0, #0x8000" - : "+r"(x),"=r"(tmp) - : - : "cc"); - return(x); -} - -#endif - -#ifndef _V_LSP_MATH_ASM -#define _V_LSP_MATH_ASM - -static inline void lsp_loop_asm(ogg_uint32_t *qip,ogg_uint32_t *pip, - ogg_int32_t *qexpp, - ogg_int32_t *ilsp,ogg_int32_t wi, - ogg_int32_t m){ - - ogg_uint32_t qi=*qip,pi=*pip; - ogg_int32_t qexp=*qexpp; - - asm("mov r0,%3;" - "mov r1,%5,asr#1;" - "add r0,r0,r1,lsl#3;" - "1:" - - "ldmdb r0!,{r1,r3};" - "subs r1,r1,%4;" //ilsp[j]-wi - "rsbmi r1,r1,#0;" //labs(ilsp[j]-wi) - "umull %0,r2,r1,%0;" //qi*=labs(ilsp[j]-wi) - - "subs r1,r3,%4;" //ilsp[j+1]-wi - "rsbmi r1,r1,#0;" //labs(ilsp[j+1]-wi) - "umull %1,r3,r1,%1;" //pi*=labs(ilsp[j+1]-wi) - - "cmn r2,r3;" // shift down 16? - "beq 0f;" - "add %2,%2,#16;" - "mov %0,%0,lsr #16;" - "orr %0,%0,r2,lsl #16;" - "mov %1,%1,lsr #16;" - "orr %1,%1,r3,lsl #16;" - "0:" - "cmp r0,%3;\n" - "bhi 1b;\n" - - // odd filter assymetry - "ands r0,%5,#1;\n" - "beq 2f;\n" - "add r0,%3,%5,lsl#2;\n" - - "ldr r1,[r0,#-4];\n" - "mov r0,#0x4000;\n" - - "subs r1,r1,%4;\n" //ilsp[j]-wi - "rsbmi r1,r1,#0;\n" //labs(ilsp[j]-wi) - "umull %0,r2,r1,%0;\n" //qi*=labs(ilsp[j]-wi) - "umull %1,r3,r0,%1;\n" //pi*=labs(ilsp[j+1]-wi) - - "cmn r2,r3;\n" // shift down 16? - "beq 2f;\n" - "add %2,%2,#16;\n" - "mov %0,%0,lsr #16;\n" - "orr %0,%0,r2,lsl #16;\n" - "mov %1,%1,lsr #16;\n" - "orr %1,%1,r3,lsl #16;\n" - - //qi=(pi>>shift)*labs(ilsp[j]-wi); - //pi=(qi>>shift)*labs(ilsp[j+1]-wi); - //qexp+=shift; - - //} - - /* normalize to max 16 sig figs */ - "2:" - "mov r2,#0;" - "orr r1,%0,%1;" - "tst r1,#0xff000000;" - "addne r2,r2,#8;" - "movne r1,r1,lsr #8;" - "tst r1,#0x00f00000;" - "addne r2,r2,#4;" - "movne r1,r1,lsr #4;" - "tst r1,#0x000c0000;" - "addne r2,r2,#2;" - "movne r1,r1,lsr #2;" - "tst r1,#0x00020000;" - "addne r2,r2,#1;" - "movne r1,r1,lsr #1;" - "tst r1,#0x00010000;" - "addne r2,r2,#1;" - "mov %0,%0,lsr r2;" - "mov %1,%1,lsr r2;" - "add %2,%2,r2;" - - : "+r"(qi),"+r"(pi),"+r"(qexp) - : "r"(ilsp),"r"(wi),"r"(m) - : "r0","r1","r2","r3","cc"); - - *qip=qi; - *pip=pi; - *qexpp=qexp; -} - -static inline void lsp_norm_asm(ogg_uint32_t *qip,ogg_int32_t *qexpp){ - - ogg_uint32_t qi=*qip; - ogg_int32_t qexp=*qexpp; - - asm("tst %0,#0x0000ff00;" - "moveq %0,%0,lsl #8;" - "subeq %1,%1,#8;" - "tst %0,#0x0000f000;" - "moveq %0,%0,lsl #4;" - "subeq %1,%1,#4;" - "tst %0,#0x0000c000;" - "moveq %0,%0,lsl #2;" - "subeq %1,%1,#2;" - "tst %0,#0x00008000;" - "moveq %0,%0,lsl #1;" - "subeq %1,%1,#1;" - : "+r"(qi),"+r"(qexp) - : - : "cc"); - *qip=qi; - *qexpp=qexp; -} - -#endif -#endif -