1e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng/* 2e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved. 3e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 4e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 5e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * This program is free software; you can redistribute it and/or modify 6e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * it under the terms of the GNU General Public License version 2 and 7e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * only version 2 as published by the Free Software Foundation. 8e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 9e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * This program is distributed in the hope that it will be useful, 10e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * but WITHOUT ANY WARRANTY; without even the implied warranty of 11e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * GNU General Public License for more details. 13e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 14e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * You should have received a copy of the GNU General Public License 15e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * along with this program; if not, write to the Free Software 16e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 17e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 02110-1301, USA. 18e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng */ 19e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 20e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng/* 21e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * Description 22e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 23e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * library function for memcpy where length bytes are copied from 24e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * ptr_in to ptr_out. ptr_out is returned unchanged. 25e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * Allows any combination of alignment on input and output pointers 26e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * and length from 0 to 2^32-1 27e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 28e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * Restrictions 29e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * The arrays should not overlap, the program will produce undefined output 30e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * if they do. 31e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * For blocks less than 16 bytes a byte by byte copy is performed. For 32e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 8byte alignments, and length multiples, a dword copy is performed up to 33e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 96bytes 34e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * History 35e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 36e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * DJH 5/15/09 Initial version 1.0 37e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * DJH 6/ 1/09 Version 1.1 modified ABI to inlcude R16-R19 38e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * DJH 7/12/09 Version 1.2 optimized codesize down to 760 was 840 39e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * DJH 10/14/09 Version 1.3 added special loop for aligned case, was 40e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * overreading bloated codesize back up to 892 41e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * DJH 4/20/10 Version 1.4 fixed Ldword_loop_epilog loop to prevent loads 42e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * occuring if only 1 left outstanding, fixes bug 43e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * # 3888, corrected for all alignments. Peeled off 44e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 1 32byte chunk from kernel loop and extended 8byte 45e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * loop at end to solve all combinations and prevent 46e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * over read. Fixed Ldword_loop_prolog to prevent 47e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * overread for blocks less than 48bytes. Reduced 48e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * codesize to 752 bytes 49e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * DJH 4/21/10 version 1.5 1.4 fix broke code for input block ends not 50e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * aligned to dword boundaries,underwriting by 1 51e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * byte, added detection for this and fixed. A 52e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * little bloat. 53e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * DJH 4/23/10 version 1.6 corrected stack error, R20 was not being restored 54e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * always, fixed the error of R20 being modified 55e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * before it was being saved 56e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * Natural c model 57e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * =============== 58e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * void * memcpy(char * ptr_out, char * ptr_in, int length) { 59e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * int i; 60e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * if(length) for(i=0; i < length; i++) { ptr_out[i] = ptr_in[i]; } 61e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * return(ptr_out); 62e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * } 63e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 64e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * Optimized memcpy function 65e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * ========================= 66e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * void * memcpy(char * ptr_out, char * ptr_in, int len) { 67e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * int i, prolog, kernel, epilog, mask; 68e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * u8 offset; 69e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * s64 data0, dataF8, data70; 70e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 71e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * s64 * ptr8_in; 72e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * s64 * ptr8_out; 73e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * s32 * ptr4; 74e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * s16 * ptr2; 75e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 76e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * offset = ((int) ptr_in) & 7; 77e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * ptr8_in = (s64 *) &ptr_in[-offset]; //read in the aligned pointers 78e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 79e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * data70 = *ptr8_in++; 80e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * dataF8 = *ptr8_in++; 81e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 82e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * data0 = HEXAGON_P_valignb_PPp(dataF8, data70, offset); 83e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 84e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * prolog = 32 - ((int) ptr_out); 85e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * mask = 0x7fffffff >> HEXAGON_R_cl0_R(len); 86e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * prolog = prolog & mask; 87e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * kernel = len - prolog; 88e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * epilog = kernel & 0x1F; 89e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * kernel = kernel>>5; 90e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 91e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * if (prolog & 1) { ptr_out[0] = (u8) data0; data0 >>= 8; ptr_out += 1;} 92e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * ptr2 = (s16 *) &ptr_out[0]; 93e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * if (prolog & 2) { ptr2[0] = (u16) data0; data0 >>= 16; ptr_out += 2;} 94e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * ptr4 = (s32 *) &ptr_out[0]; 95e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * if (prolog & 4) { ptr4[0] = (u32) data0; data0 >>= 32; ptr_out += 4;} 96e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 97e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * offset = offset + (prolog & 7); 98e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * if (offset >= 8) { 99e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * data70 = dataF8; 100e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * dataF8 = *ptr8_in++; 101e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * } 102e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * offset = offset & 0x7; 103e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 104e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * prolog = prolog >> 3; 105e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * if (prolog) for (i=0; i < prolog; i++) { 106e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * data0 = HEXAGON_P_valignb_PPp(dataF8, data70, offset); 107e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * ptr8_out = (s64 *) &ptr_out[0]; *ptr8_out = data0; ptr_out += 8; 108e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * data70 = dataF8; 109e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * dataF8 = *ptr8_in++; 110e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * } 111e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * if(kernel) { kernel -= 1; epilog += 32; } 112e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * if(kernel) for(i=0; i < kernel; i++) { 113e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * data0 = HEXAGON_P_valignb_PPp(dataF8, data70, offset); 114e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * ptr8_out = (s64 *) &ptr_out[0]; *ptr8_out = data0; ptr_out += 8; 115e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * data70 = *ptr8_in++; 116e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 117e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * data0 = HEXAGON_P_valignb_PPp(data70, dataF8, offset); 118e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * ptr8_out = (s64 *) &ptr_out[0]; *ptr8_out = data0; ptr_out += 8; 119e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * dataF8 = *ptr8_in++; 120e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 121e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * data0 = HEXAGON_P_valignb_PPp(dataF8, data70, offset); 122e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * ptr8_out = (s64 *) &ptr_out[0]; *ptr8_out = data0; ptr_out += 8; 123e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * data70 = *ptr8_in++; 124e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 125e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * data0 = HEXAGON_P_valignb_PPp(data70, dataF8, offset); 126e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * ptr8_out = (s64 *) &ptr_out[0]; *ptr8_out = data0; ptr_out += 8; 127e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * dataF8 = *ptr8_in++; 128e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * } 129e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * epilogdws = epilog >> 3; 130e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * if (epilogdws) for (i=0; i < epilogdws; i++) { 131e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * data0 = HEXAGON_P_valignb_PPp(dataF8, data70, offset); 132e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * ptr8_out = (s64 *) &ptr_out[0]; *ptr8_out = data0; ptr_out += 8; 133e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * data70 = dataF8; 134e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * dataF8 = *ptr8_in++; 135e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * } 136e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * data0 = HEXAGON_P_valignb_PPp(dataF8, data70, offset); 137e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 138e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * ptr4 = (s32 *) &ptr_out[0]; 139e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * if (epilog & 4) { ptr4[0] = (u32) data0; data0 >>= 32; ptr_out += 4;} 140e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * ptr2 = (s16 *) &ptr_out[0]; 141e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * if (epilog & 2) { ptr2[0] = (u16) data0; data0 >>= 16; ptr_out += 2;} 142e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * if (epilog & 1) { *ptr_out++ = (u8) data0; } 143e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 144e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * return(ptr_out - length); 145e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * } 146e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 147e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * Codesize : 784 bytes 148e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng */ 149e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 150e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 151e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define ptr_out R0 /* destination pounter */ 152e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define ptr_in R1 /* source pointer */ 153e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define len R2 /* length of copy in bytes */ 154e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 155e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define data70 R13:12 /* lo 8 bytes of non-aligned transfer */ 156e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define dataF8 R11:10 /* hi 8 bytes of non-aligned transfer */ 157e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define ldata0 R7:6 /* even 8 bytes chunks */ 158e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define ldata1 R25:24 /* odd 8 bytes chunks */ 159e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define data1 R7 /* lower 8 bytes of ldata1 */ 160e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define data0 R6 /* lower 8 bytes of ldata0 */ 161e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 162e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define ifbyte p0 /* if transfer has bytes in epilog/prolog */ 163e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define ifhword p0 /* if transfer has shorts in epilog/prolog */ 164e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define ifword p0 /* if transfer has words in epilog/prolog */ 165e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define noprolog p0 /* no prolog, xfer starts at 32byte */ 166e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define nokernel p1 /* no 32byte multiple block in the transfer */ 167e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define noepilog p0 /* no epilog, xfer ends on 32byte boundary */ 168e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define align p2 /* alignment of input rel to 8byte boundary */ 169e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define kernel1 p0 /* kernel count == 1 */ 170e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 171e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define dalign R25 /* rel alignment of input to output data */ 172e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define star3 R16 /* number bytes in prolog - dwords */ 173e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define rest R8 /* length - prolog bytes */ 174e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define back R7 /* nr bytes > dword boundary in src block */ 175e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define epilog R3 /* bytes in epilog */ 176e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define inc R15:14 /* inc kernel by -1 and defetch ptr by 32 */ 177e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define kernel R4 /* number of 32byte chunks in kernel */ 178e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define ptr_in_p_128 R5 /* pointer for prefetch of input data */ 179e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define mask R8 /* mask used to determine prolog size */ 180e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define shift R8 /* used to work a shifter to extract bytes */ 181e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define shift2 R5 /* in epilog to workshifter to extract bytes */ 182e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define prolog R15 /* bytes in prolog */ 183e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define epilogdws R15 /* number dwords in epilog */ 184e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define shiftb R14 /* used to extract bytes */ 185e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define offset R9 /* same as align in reg */ 186e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define ptr_out_p_32 R17 /* pointer to output dczero */ 187e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define align888 R14 /* if simple dword loop can be used */ 188e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define len8 R9 /* number of dwords in length */ 189e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define over R20 /* nr of bytes > last inp buf dword boundary */ 190e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 191e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define ptr_in_p_128kernel R5:4 /* packed fetch pointer & kernel cnt */ 192e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 193e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng .section .text 194e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng .p2align 4 195e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng .global memcpy 196e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng .type memcpy, @function 197e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengmemcpy: 198e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 199e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p2 = cmp.eq(len, #0); /* =0 */ 200e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng align888 = or(ptr_in, ptr_out); /* %8 < 97 */ 201e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p0 = cmp.gtu(len, #23); /* %1, <24 */ 202e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p1 = cmp.eq(ptr_in, ptr_out); /* attempt to overwrite self */ 203e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 204e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 205e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p1 = or(p2, p1); 206e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p3 = cmp.gtu(len, #95); /* %8 < 97 */ 207e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng align888 = or(align888, len); /* %8 < 97 */ 208e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng len8 = lsr(len, #3); /* %8 < 97 */ 209e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 210e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 211e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dcfetch(ptr_in); /* zero/ptrin=ptrout causes fetch */ 212e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p2 = bitsclr(align888, #7); /* %8 < 97 */ 213e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p1) jumpr r31; /* =0 */ 214e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 215e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 216e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p2 = and(p2,!p3); /* %8 < 97 */ 217e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if (p2.new) len = add(len, #-8); /* %8 < 97 */ 218e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if (p2.new) jump:NT .Ldwordaligned; /* %8 < 97 */ 219e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 220e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 221e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(!p0) jump .Lbytes23orless; /* %1, <24 */ 222e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng mask.l = #LO(0x7fffffff); 223e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* all bytes before line multiples of data */ 224e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng prolog = sub(#0, ptr_out); 225e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 226e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 227e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* save r31 on stack, decrement sp by 16 */ 228e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng allocframe(#24); 229e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng mask.h = #HI(0x7fffffff); 230e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ptr_in_p_128 = add(ptr_in, #32); 231e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng back = cl0(len); 232e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 233e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 234e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng memd(sp+#0) = R17:16; /* save r16,r17 on stack6 */ 235e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng r31.l = #LO(.Lmemcpy_return); /* set up final return pointer */ 236e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng prolog &= lsr(mask, back); 237e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng offset = and(ptr_in, #7); 238e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 239e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 240e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng memd(sp+#8) = R25:24; /* save r25,r24 on stack */ 241e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dalign = sub(ptr_out, ptr_in); 242e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng r31.h = #HI(.Lmemcpy_return); /* set up final return pointer */ 243e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 244e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 245e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* see if there if input buffer end if aligned */ 246e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng over = add(len, ptr_in); 247e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng back = add(len, offset); 248e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng memd(sp+#16) = R21:20; /* save r20,r21 on stack */ 249e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 250e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 251e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng noprolog = bitsclr(prolog, #7); 252e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng prolog = and(prolog, #31); 253e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dcfetch(ptr_in_p_128); 254e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ptr_in_p_128 = add(ptr_in_p_128, #32); 255e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 256e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 257e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng kernel = sub(len, prolog); 258e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng shift = asl(prolog, #3); 259e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng star3 = and(prolog, #7); 260e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ptr_in = and(ptr_in, #-8); 261e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 262e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 263e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng prolog = lsr(prolog, #3); 264e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng epilog = and(kernel, #31); 265e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ptr_out_p_32 = add(ptr_out, prolog); 266e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng over = and(over, #7); 267e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 268e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 269e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p3 = cmp.gtu(back, #8); 270e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng kernel = lsr(kernel, #5); 271e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dcfetch(ptr_in_p_128); 272e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ptr_in_p_128 = add(ptr_in_p_128, #32); 273e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 274e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 275e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p1 = cmp.eq(prolog, #0); 276e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(!p1.new) prolog = add(prolog, #1); 277e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dcfetch(ptr_in_p_128); /* reserve the line 64bytes on */ 278e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ptr_in_p_128 = add(ptr_in_p_128, #32); 279e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 280e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 281e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng nokernel = cmp.eq(kernel,#0); 282e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dcfetch(ptr_in_p_128); /* reserve the line 64bytes on */ 283e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ptr_in_p_128 = add(ptr_in_p_128, #32); 284e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng shiftb = and(shift, #8); 285e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 286e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 287e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dcfetch(ptr_in_p_128); /* reserve the line 64bytes on */ 288e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ptr_in_p_128 = add(ptr_in_p_128, #32); 289e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(nokernel) jump .Lskip64; 290e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p2 = cmp.eq(kernel, #1); /* skip ovr if kernel == 0 */ 291e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 292e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 293e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dczeroa(ptr_out_p_32); 294e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* don't advance pointer */ 295e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(!p2) ptr_out_p_32 = add(ptr_out_p_32, #32); 296e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 297e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 298e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dalign = and(dalign, #31); 299e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dczeroa(ptr_out_p_32); 300e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 301e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng.Lskip64: 302e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 303e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng data70 = memd(ptr_in++#16); 304e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p3) dataF8 = memd(ptr_in+#8); 305e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(noprolog) jump .Lnoprolog32; 306e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng align = offset; 307e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 308e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng/* upto initial 7 bytes */ 309e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 310e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata0 = valignb(dataF8, data70, align); 311e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ifbyte = tstbit(shift,#3); 312e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng offset = add(offset, star3); 313e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 314e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 315e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(ifbyte) memb(ptr_out++#1) = data0; 316e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata0 = lsr(ldata0, shiftb); 317e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng shiftb = and(shift, #16); 318e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ifhword = tstbit(shift,#4); 319e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 320e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 321e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(ifhword) memh(ptr_out++#2) = data0; 322e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata0 = lsr(ldata0, shiftb); 323e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ifword = tstbit(shift,#5); 324e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p2 = cmp.gtu(offset, #7); 325e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 326e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 327e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(ifword) memw(ptr_out++#4) = data0; 328e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p2) data70 = dataF8; 329e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p2) dataF8 = memd(ptr_in++#8); /* another 8 bytes */ 330e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng align = offset; 331e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 332e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng.Lnoprolog32: 333e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 334e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p3 = sp1loop0(.Ldword_loop_prolog, prolog) 335e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng rest = sub(len, star3); /* whats left after the loop */ 336e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p0 = cmp.gt(over, #0); 337e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 338e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p0) rest = add(rest, #16); 339e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng.Ldword_loop_prolog: 340e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 341e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p3) memd(ptr_out++#8) = ldata0; 342e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata0 = valignb(dataF8, data70, align); 343e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p0 = cmp.gt(rest, #16); 344e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 345e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 346e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng data70 = dataF8; 347e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p0) dataF8 = memd(ptr_in++#8); 348e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng rest = add(rest, #-8); 349e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng}:endloop0 350e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng.Lkernel: 351e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 352e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* kernel is at least 32bytes */ 353e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p3 = cmp.gtu(kernel, #0); 354e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* last itn. remove edge effects */ 355e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p3.new) kernel = add(kernel, #-1); 356e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* dealt with in last dword loop */ 357e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p3.new) epilog = add(epilog, #32); 358e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 359e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 360e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng nokernel = cmp.eq(kernel, #0); /* after adjustment, recheck */ 361e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(nokernel.new) jump:NT .Lepilog; /* likely not taken */ 362e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng inc = combine(#32, #-1); 363e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p3 = cmp.gtu(dalign, #24); 364e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 365e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 366e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p3) jump .Lodd_alignment; 367e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 368e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 369e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng loop0(.Loword_loop_25to31, kernel); 370e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng kernel1 = cmp.gtu(kernel, #1); 371e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng rest = kernel; 372e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 373e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng .falign 374e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng.Loword_loop_25to31: 375e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 376e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dcfetch(ptr_in_p_128); /* prefetch 4 lines ahead */ 377e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(kernel1) ptr_out_p_32 = add(ptr_out_p_32, #32); 378e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 379e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 380e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dczeroa(ptr_out_p_32); /* reserve the next 32bytes in cache */ 381e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p3 = cmp.eq(kernel, rest); 382e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 383e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 384e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* kernel -= 1 */ 385e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ptr_in_p_128kernel = vaddw(ptr_in_p_128kernel, inc); 386e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* kill write on first iteration */ 387e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(!p3) memd(ptr_out++#8) = ldata1; 388e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata1 = valignb(dataF8, data70, align); 389e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng data70 = memd(ptr_in++#8); 390e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 391e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 392e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng memd(ptr_out++#8) = ldata0; 393e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata0 = valignb(data70, dataF8, align); 394e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dataF8 = memd(ptr_in++#8); 395e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 396e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 397e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng memd(ptr_out++#8) = ldata1; 398e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata1 = valignb(dataF8, data70, align); 399e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng data70 = memd(ptr_in++#8); 400e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 401e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 402e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng memd(ptr_out++#8) = ldata0; 403e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata0 = valignb(data70, dataF8, align); 404e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dataF8 = memd(ptr_in++#8); 405e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng kernel1 = cmp.gtu(kernel, #1); 406e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng}:endloop0 407e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 408e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng memd(ptr_out++#8) = ldata1; 409e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng jump .Lepilog; 410e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 411e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng.Lodd_alignment: 412e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 413e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng loop0(.Loword_loop_00to24, kernel); 414e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng kernel1 = cmp.gtu(kernel, #1); 415e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng rest = add(kernel, #-1); 416e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 417e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng .falign 418e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng.Loword_loop_00to24: 419e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 420e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dcfetch(ptr_in_p_128); /* prefetch 4 lines ahead */ 421e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ptr_in_p_128kernel = vaddw(ptr_in_p_128kernel, inc); 422e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(kernel1) ptr_out_p_32 = add(ptr_out_p_32, #32); 423e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 424e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 425e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dczeroa(ptr_out_p_32); /* reserve the next 32bytes in cache */ 426e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 427e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 428e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng memd(ptr_out++#8) = ldata0; 429e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata0 = valignb(dataF8, data70, align); 430e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng data70 = memd(ptr_in++#8); 431e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 432e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 433e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng memd(ptr_out++#8) = ldata0; 434e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata0 = valignb(data70, dataF8, align); 435e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dataF8 = memd(ptr_in++#8); 436e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 437e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 438e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng memd(ptr_out++#8) = ldata0; 439e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata0 = valignb(dataF8, data70, align); 440e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng data70 = memd(ptr_in++#8); 441e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 442e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 443e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng memd(ptr_out++#8) = ldata0; 444e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata0 = valignb(data70, dataF8, align); 445e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dataF8 = memd(ptr_in++#8); 446e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng kernel1 = cmp.gtu(kernel, #1); 447e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng}:endloop0 448e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng.Lepilog: 449e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 450e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng noepilog = cmp.eq(epilog,#0); 451e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng epilogdws = lsr(epilog, #3); 452e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng kernel = and(epilog, #7); 453e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 454e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 455e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(noepilog) jumpr r31; 456e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(noepilog) ptr_out = sub(ptr_out, len); 457e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p3 = cmp.eq(epilogdws, #0); 458e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng shift2 = asl(epilog, #3); 459e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 460e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 461e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng shiftb = and(shift2, #32); 462e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ifword = tstbit(epilog,#2); 463e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p3) jump .Lepilog60; 464e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(!p3) epilog = add(epilog, #-16); 465e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 466e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 467e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng loop0(.Ldword_loop_epilog, epilogdws); 468e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* stop criteria is lsbs unless = 0 then its 8 */ 469e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p3 = cmp.eq(kernel, #0); 470e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p3.new) kernel= #8; 471e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p1 = cmp.gt(over, #0); 472e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 473e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* if not aligned to end of buffer execute 1 more iteration */ 474e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p1) kernel= #0; 475e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng.Ldword_loop_epilog: 476e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 477e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng memd(ptr_out++#8) = ldata0; 478e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata0 = valignb(dataF8, data70, align); 479e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p3 = cmp.gt(epilog, kernel); 480e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 481e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 482e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng data70 = dataF8; 483e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p3) dataF8 = memd(ptr_in++#8); 484e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng epilog = add(epilog, #-8); 485e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng}:endloop0 486e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng/* copy last 7 bytes */ 487e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng.Lepilog60: 488e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 489e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(ifword) memw(ptr_out++#4) = data0; 490e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata0 = lsr(ldata0, shiftb); 491e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ifhword = tstbit(epilog,#1); 492e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng shiftb = and(shift2, #16); 493e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 494e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 495e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(ifhword) memh(ptr_out++#2) = data0; 496e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata0 = lsr(ldata0, shiftb); 497e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ifbyte = tstbit(epilog,#0); 498e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(ifbyte.new) len = add(len, #-1); 499e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 500e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 501e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(ifbyte) memb(ptr_out) = data0; 502e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ptr_out = sub(ptr_out, len); /* return dest pointer */ 503e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng jumpr r31; 504e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 505e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng/* do byte copy for small n */ 506e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng.Lbytes23orless: 507e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 508e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p3 = sp1loop0(.Lbyte_copy, len); 509e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng len = add(len, #-1); 510e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 511e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng.Lbyte_copy: 512e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 513e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng data0 = memb(ptr_in++#1); 514e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p3) memb(ptr_out++#1) = data0; 515e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng}:endloop0 516e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 517e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng memb(ptr_out) = data0; 518e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ptr_out = sub(ptr_out, len); 519e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng jumpr r31; 520e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 521e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng/* do dword copies for aligned in, out and length */ 522e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng.Ldwordaligned: 523e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 524e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng p3 = sp1loop0(.Ldword_copy, len8); 525e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 526e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng.Ldword_copy: 527e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 528e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if(p3) memd(ptr_out++#8) = ldata0; 529e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ldata0 = memd(ptr_in++#8); 530e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng}:endloop0 531e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 532e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng memd(ptr_out) = ldata0; 533e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ptr_out = sub(ptr_out, len); 534e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng jumpr r31; /* return to function caller */ 535e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 536e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng.Lmemcpy_return: 537e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng r21:20 = memd(sp+#16); /* restore r20+r21 */ 538e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 539e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng r25:24 = memd(sp+#8); /* restore r24+r25 */ 540e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng r17:16 = memd(sp+#0); /* restore r16+r17 */ 541e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 542e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng deallocframe; /* restore r31 and incrment stack by 16 */ 543e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng jumpr r31 544