--- /dev/null
+/* Copyright (C) 2003 Jean-Marc Valin */
+/**
+ @file fixed_arm5e.h
+ @brief ARM-tuned fixed-point operations
+*/
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ - Neither the name of the Xiph.org Foundation nor the names of its
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
+ CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef FIXED_ARM5E_H
+#define FIXED_ARM5E_H
+
+#undef MULT16_16
+static inline spx_word32_t MULT16_16(spx_word16_t x, spx_word16_t y) {
+ int res;
+ asm ("smulbb %0,%1,%2;\n"
+ : "=&r"(res)
+ : "%r"(x),"r"(y));
+ return(res);
+}
+
+#undef MAC16_16
+static inline spx_word32_t MAC16_16(spx_word32_t a, spx_word16_t x, spx_word32_t y) {
+ int res;
+ asm ("smlabb %0,%1,%2,%3;\n"
+ : "=&r"(res)
+ : "%r"(x),"r"(y),"r"(a));
+ return(res);
+}
+
+#undef MULT16_32_Q15
+static inline spx_word32_t MULT16_32_Q15(spx_word16_t x, spx_word32_t y) {
+ int res;
+ asm ("smulwb %0,%1,%2;\n"
+ : "=&r"(res)
+ : "%r"(y<<1),"r"(x));
+ return(res);
+}
+
+#undef MAC16_32_Q15
+static inline spx_word32_t MAC16_32_Q15(spx_word32_t a, spx_word16_t x, spx_word32_t y) {
+ int res;
+ asm ("smlawb %0,%1,%2,%3;\n"
+ : "=&r"(res)
+ : "%r"(y<<1),"r"(x),"r"(a));
+ return(res);
+}
+
+#undef MULT16_32_Q11
+static inline spx_word32_t MULT16_32_Q11(spx_word16_t x, spx_word32_t y) {
+ int res;
+ asm ("smulwb %0,%1,%2;\n"
+ : "=&r"(res)
+ : "%r"(y<<5),"r"(x));
+ return(res);
+}
+
+#undef MAC16_32_Q11
+static inline spx_word32_t MAC16_32_Q11(spx_word32_t a, spx_word16_t x, spx_word32_t y) {
+ int res;
+ asm ("smlawb %0,%1,%2,%3;\n"
+ : "=&r"(res)
+ : "%r"(y<<5),"r"(x),"r"(a));
+ return(res);
+}
+
+#undef DIV32_16
+static inline short DIV32_16(int a, int b)
+{
+ int res=0;
+ int dead1, dead2, dead3, dead4, dead5;
+ __asm__ __volatile__ (
+ "\teor %5, %0, %1\n"
+ "\tmovs %4, %0\n"
+ "\trsbmi %0, %0, #0 \n"
+ "\tmovs %4, %1\n"
+ "\trsbmi %1, %1, #0 \n"
+ "\tmov %4, #1\n"
+
+ "\tsubs %3, %0, %1, asl #14 \n"
+ "\torrpl %2, %2, %4, asl #14 \n"
+ "\tmovpl %0, %3 \n"
+
+ "\tsubs %3, %0, %1, asl #13 \n"
+ "\torrpl %2, %2, %4, asl #13 \n"
+ "\tmovpl %0, %3 \n"
+
+ "\tsubs %3, %0, %1, asl #12 \n"
+ "\torrpl %2, %2, %4, asl #12 \n"
+ "\tmovpl %0, %3 \n"
+
+ "\tsubs %3, %0, %1, asl #11 \n"
+ "\torrpl %2, %2, %4, asl #11 \n"
+ "\tmovpl %0, %3 \n"
+
+ "\tsubs %3, %0, %1, asl #10 \n"
+ "\torrpl %2, %2, %4, asl #10 \n"
+ "\tmovpl %0, %3 \n"
+
+ "\tsubs %3, %0, %1, asl #9 \n"
+ "\torrpl %2, %2, %4, asl #9 \n"
+ "\tmovpl %0, %3 \n"
+
+ "\tsubs %3, %0, %1, asl #8 \n"
+ "\torrpl %2, %2, %4, asl #8 \n"
+ "\tmovpl %0, %3 \n"
+
+ "\tsubs %3, %0, %1, asl #7 \n"
+ "\torrpl %2, %2, %4, asl #7 \n"
+ "\tmovpl %0, %3 \n"
+
+ "\tsubs %3, %0, %1, asl #6 \n"
+ "\torrpl %2, %2, %4, asl #6 \n"
+ "\tmovpl %0, %3 \n"
+
+ "\tsubs %3, %0, %1, asl #5 \n"
+ "\torrpl %2, %2, %4, asl #5 \n"
+ "\tmovpl %0, %3 \n"
+
+ "\tsubs %3, %0, %1, asl #4 \n"
+ "\torrpl %2, %2, %4, asl #4 \n"
+ "\tmovpl %0, %3 \n"
+
+ "\tsubs %3, %0, %1, asl #3 \n"
+ "\torrpl %2, %2, %4, asl #3 \n"
+ "\tmovpl %0, %3 \n"
+
+ "\tsubs %3, %0, %1, asl #2 \n"
+ "\torrpl %2, %2, %4, asl #2 \n"
+ "\tmovpl %0, %3 \n"
+
+ "\tsubs %3, %0, %1, asl #1 \n"
+ "\torrpl %2, %2, %4, asl #1 \n"
+ "\tmovpl %0, %3 \n"
+
+ "\tsubs %3, %0, %1 \n"
+ "\torrpl %2, %2, %4 \n"
+ "\tmovpl %0, %3 \n"
+
+ "\tmovs %5, %5, lsr #31 \n"
+ "\trsbne %2, %2, #0 \n"
+ : "=r" (dead1), "=r" (dead2), "=r" (res),
+ "=r" (dead3), "=r" (dead4), "=r" (dead5)
+ : "0" (a), "1" (b), "2" (res)
+ : "memory", "cc"
+ );
+ return res;
+}
+
+
+
+
+#endif
projects / mafwsubrenderer / blobdiff