static void vector_fmul_vfp(float *dst, const float *src, int len) { int tmp; asm volatile( "fmrx %[tmp], fpscr\n\t" "orr %[tmp], %[tmp], #(3 << 16)\n\t" /* set vector size to 4 */ "fmxr fpscr, %[tmp]\n\t" "fldmias %[dst_r]!, {s0-s3}\n\t" "fldmias %[src]!, {s8-s11}\n\t" "fldmias %[dst_r]!, {s4-s7}\n\t" "fldmias %[src]!, {s12-s15}\n\t" "fmuls s8, s0, s8\n\t" "1:\n\t" "subs %[len], %[len], #16\n\t" "fmuls s12, s4, s12\n\t" "fldmiasge %[dst_r]!, {s16-s19}\n\t" "fldmiasge %[src]!, {s24-s27}\n\t" "fldmiasge %[dst_r]!, {s20-s23}\n\t" "fldmiasge %[src]!, {s28-s31}\n\t" "fmulsge s24, s16, s24\n\t" "fstmias %[dst_w]!, {s8-s11}\n\t" "fstmias %[dst_w]!, {s12-s15}\n\t" "fmulsge s28, s20, s28\n\t" "fldmiasgt %[dst_r]!, {s0-s3}\n\t" "fldmiasgt %[src]!, {s8-s11}\n\t" "fldmiasgt %[dst_r]!, {s4-s7}\n\t" "fldmiasgt %[src]!, {s12-s15}\n\t" "fmulsge s8, s0, s8\n\t" "fstmiasge %[dst_w]!, {s24-s27}\n\t" "fstmiasge %[dst_w]!, {s28-s31}\n\t" "bgt 1b\n\t" "bic %[tmp], %[tmp], #(7 << 16)\n\t" /* set vector size back to 1 */ "fmxr fpscr, %[tmp]\n\t" : [dst_w] "+&r" (dst), [dst_r] "+&r" (dst), [src] "+&r" (src), [len] "+&r" (len), [tmp] "=&r" (tmp) : : "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", "s8", "s9", "s10", "s11", "s12", "s13", "s14", "s15", "s16", "s17", "s18", "s19", "s20", "s21", "s22", "s23", "s24", "s25", "s26", "s27", "s28", "s29", "s30", "s31", "cc", "memory"); }