Перенос на новую организацию GONEC

fastfunc.h

@@ -0,0 +1,14 @@
+//
+// Created by cfif on 08.06.23.
+//
+
+#ifndef FASTFUNC_H
+#define FASTFUNC_H
+
+#include <stdlib.h>
+
+void *memcpy_fast(void *dst0, const void *src0, size_t len0);
+void *memmove_fast(void *dst_void, const void *src_void, size_t length);
+void memcpy32 (void* dest, const void* src, size_t size);
+
+#endif //FASTFUNC_H

memcpy-fast.c

@@ -0,0 +1,94 @@
+/*
+FUNCTION
+        <<memcpy>>---copy memory regions
+
+ANSI_SYNOPSIS
+        #include <string.h>
+        void* memcpy(void *<[out]>, const void *<[in]>, size_t <[n]>);
+
+TRAD_SYNOPSIS
+        void *memcpy(<[out]>, <[in]>, <[n]>
+        void *<[out]>;
+        void *<[in]>;
+        size_t <[n]>;
+
+DESCRIPTION
+        This function copies <[n]> bytes from the memory region
+        pointed to by <[in]> to the memory region pointed to by
+        <[out]>.
+
+        If the regions overlap, the behavior is undefined.
+
+RETURNS
+        <<memcpy>> returns a pointer to the first byte of the <[out]>
+        region.
+
+PORTABILITY
+<<memcpy>> is ANSI C.
+
+<<memcpy>> requires no supporting OS subroutines.
+
+QUICKREF
+        memcpy ansi pure
+	*/
+
+#include <fastfunc.h>
+
+#undef memcpy
+
+/* Nonzero if either X or Y is not aligned on a "long" boundary.  */
+#define UNALIGNED(X, Y) \
+  (((long)X & (sizeof (long) - 1)) | ((long)Y & (sizeof (long) - 1)))
+
+/* How many bytes are copied each iteration of the 4X unrolled loop.  */
+#define BIGBLOCKSIZE    (sizeof (long) << 2)
+
+/* How many bytes are copied each iteration of the word copy loop.  */
+#define LITTLEBLOCKSIZE (sizeof (long))
+
+/* Threshhold for punting to the byte copier.  */
+#define TOO_SMALL(LEN)  ((LEN) < BIGBLOCKSIZE)
+
+void *
+memcpy_fast(void *dst0, const void *src0, size_t len0)
+{
+  unsigned char *dst = dst0;
+  const unsigned char *src = src0;
+  long *aligned_dst;
+  const long *aligned_src;
+  int   len =  len0;
+
+  /* If the size is small, or either SRC or DST is unaligned,
+     then punt into the byte copy loop.  This should be rare.  */
+  if (!TOO_SMALL(len) && !UNALIGNED (src, dst))
+    {
+      aligned_dst = (long*)dst;
+      aligned_src = (long*)src;
+
+      /* Copy 4X long words at a time if possible.  */
+      while (len >= BIGBLOCKSIZE)
+        {
+          *aligned_dst++ = *aligned_src++;
+          *aligned_dst++ = *aligned_src++;
+          *aligned_dst++ = *aligned_src++;
+          *aligned_dst++ = *aligned_src++;
+          len -= BIGBLOCKSIZE;
+        }
+
+      /* Copy one long word at a time if possible.  */
+      while (len >= LITTLEBLOCKSIZE)
+        {
+          *aligned_dst++ = *aligned_src++;
+          len -= LITTLEBLOCKSIZE;
+        }
+
+       /* Pick up any residual with a byte copier.  */
+      dst = (unsigned char*)aligned_dst;
+      src = (unsigned char*)aligned_src;
+    }
+
+  while (len--)
+    *dst++ = *src++;
+
+  return dst0;
+}

memcpy32.s

@@ -0,0 +1,50 @@
+.syntax unified
+.cpu cortex-m4
+.fpu softvfp
+.thumb
+
+
+.global memcpy32
+.type  memcpy32, %function
+
+
+memcpy32:
+push {r4, r5, r6, r7, r8, r9, r10, r11}
+
+bics r11, r2, #31
+beq 2f
+add r11, r0
+
+1: ldmia r1!,  { r3, r4, r5, r6, r7, r8, r9, r10 }
+stmia r0!, { r3, r4, r5, r6, r7, r8, r9, r10 }
+cmp r0, r11
+bne 1b
+2:
+
+tst r2, #16
+itt NE
+ldmiane r1!, { r3, r4, r5, r6 }
+stmiane r0!, { r3, r4, r5, r6 }
+
+tst r2, #8
+itt NE
+ldrdne r3, r4, [r1], #+8
+strdne r3, r4, [r0], #+8
+
+tst r2, #4
+itt NE
+ldrne r3, [r1], #+4
+strne r3, [r0], #+4
+
+tst r2, #2
+itt NE
+ldrhne r3, [r1], #+2
+strhne r3, [r0], #+2
+
+tst r2, #1
+itt NE
+ldrbne r3, [r1], #+1
+strbne r3, [r0], #+1
+
+pop {r4, r5, r6, r7, r8, r9, r10, r11}
+bx lr

memmove-fast.c

@@ -0,0 +1,112 @@
+/*
+FUNCTION
+	<<memmove>>---move possibly overlapping memory
+
+INDEX
+	memmove
+
+ANSI_SYNOPSIS
+	#include <string.h>
+	void *memmove(void *<[dst]>, const void *<[src]>, size_t <[length]>);
+
+TRAD_SYNOPSIS
+	#include <string.h>
+	void *memmove(<[dst]>, <[src]>, <[length]>)
+	void *<[dst]>;
+	void *<[src]>;
+	size_t <[length]>;
+
+DESCRIPTION
+	This function moves <[length]> characters from the block of
+	memory starting at <<*<[src]>>> to the memory starting at
+	<<*<[dst]>>>. <<memmove>> reproduces the characters correctly
+	at <<*<[dst]>>> even if the two areas overlap.
+
+
+RETURNS
+	The function returns <[dst]> as passed.
+
+PORTABILITY
+<<memmove>> is ANSI C.
+
+<<memmove>> requires no supporting OS subroutines.
+
+QUICKREF
+	memmove ansi pure
+*/
+#include <fastfunc.h>
+
+#undef memmove
+
+/* Nonzero if either X or Y is not aligned on a "long" boundary.  */
+#define UNALIGNED(X, Y) \
+  (((long)X & (sizeof (long) - 1)) | ((long)Y & (sizeof (long) - 1)))
+
+/* How many bytes are copied each iteration of the 4X unrolled loop.  */
+#define BIGBLOCKSIZE    (sizeof (long) << 2)
+
+/* How many bytes are copied each iteration of the word copy loop.  */
+#define LITTLEBLOCKSIZE (sizeof (long))
+
+/* Threshhold for punting to the byte copier.  */
+#define TOO_SMALL(LEN)  ((LEN) < BIGBLOCKSIZE)
+
+void *
+memmove_fast(void *dst_void, const void *src_void, size_t length)
+{
+  unsigned char *dst = dst_void;
+  const unsigned char *src = src_void;
+  long *aligned_dst;
+  const long *aligned_src;
+  int   len =  length;
+
+  if (src < dst && dst < src + len)
+    {
+      /* Destructive overlap...have to copy backwards */
+      src += len;
+      dst += len;
+      while (len--)
+	{
+	  *--dst = *--src;
+	}
+    }
+  else
+    {
+      /* Use optimizing algorithm for a non-destructive copy to closely
+         match memcpy. If the size is small or either SRC or DST is unaligned,
+         then punt into the byte copy loop.  This should be rare.  */
+      if (!TOO_SMALL(len) && !UNALIGNED (src, dst))
+        {
+          aligned_dst = (long*)dst;
+          aligned_src = (long*)src;
+
+          /* Copy 4X long words at a time if possible.  */
+          while (len >= BIGBLOCKSIZE)
+            {
+              *aligned_dst++ = *aligned_src++;
+              *aligned_dst++ = *aligned_src++;
+              *aligned_dst++ = *aligned_src++;
+              *aligned_dst++ = *aligned_src++;
+              len -= BIGBLOCKSIZE;
+            }
+
+          /* Copy one long word at a time if possible.  */
+          while (len >= LITTLEBLOCKSIZE)
+            {
+              *aligned_dst++ = *aligned_src++;
+              len -= LITTLEBLOCKSIZE;
+            }
+
+          /* Pick up any residual with a byte copier.  */
+          dst = (unsigned char*)aligned_dst;
+          src = (unsigned char*)aligned_src;
+        }
+
+      while (len--)
+        {
+          *dst++ = *src++;
+        }
+    }
+
+  return dst_void;
+}

modular.json

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+{
+  "cmake": {
+    "inc_dirs": [
+      "./"
+    ],
+    "srcs": [
+      "./**.c",
+      "**.s"
+    ]
+  }
+}