relocate i386 string.h to i386-specific dir

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 0 insertions, 316 deletions

diff --git a/include/libc-string_i386.h b/include/libc-string_i386.h
deleted file mode 100644
index 3eefdeb76..000000000
--- a/include/libc-string_i386.h
+++ /dev/null
@@ -1,316 +0,0 @@
-/*
- * Copyright (C) 2008 Denys Vlasenko <vda.linux@googlemail.com>
- *
- * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball
- */
-
-#if !defined _STRING_H
-#error "Never use <libc-string_i386.h> directly; include <string.h> instead"
-#endif
-
-#ifndef _LIBC_STRING_i386_H
-#define _LIBC_STRING_i386_H 1
-
-static __always_inline
-void *inlined_memset_const_c_count4(void *s, unsigned eax, unsigned count)
-{
-	int ecx, edi;
-
-	if (count == 0)
-		return s;
-
-	/* Very small (2 stores or less) are best done with direct
-	 * mov <const>,<mem> instructions (they do not clobber registers) */
-	if (count == 1) {
-		*(char *)(s + 0) = eax;
-		return s;
-	}
-
-	/* You wonder why & 0xff is needed? Try memset(p, '\xff', size).
-	 * If char is signed, '\xff' == -1! */
-	eax = (eax & 0xff) * 0x01010101; /* done at compile time */
-
-	if (count == 2) {
-		*(short *)(s + 0) = eax;
-		return s;
-	}
-	if (count == 3) {
-		*(short *)(s + 0) = eax;
-		*(char *) (s + 2) = eax;
-		return s;
-	}
-	if (count == 1*4 + 0) {
-		*(int *)(s + 0) = eax;
-		return s;
-	}
-	if (count == 1*4 + 1) {
-		*(int *) (s + 0) = eax;
-		*(char *)(s + 4) = eax;
-		return s;
-	}
-	if (count == 1*4 + 2) {
-		*(int *)  (s + 0) = eax;
-		*(short *)(s + 4) = eax;
-		return s;
-	}
-
-	/* Small string stores: don't clobber ecx
-	 * (clobbers only eax and edi) */
-#define small_store(arg) { \
-	__asm__ __volatile__( \
-		arg \
-		: "=&D" (edi) \
-		: "a" (eax), "0" (s) \
-		: "memory" \
-	); \
-	return s; \
-}
-	if (count == 1*4 + 3) small_store("stosl; stosw; stosb");
-	if (count == 2*4 + 0) {
-		((int *)s)[0] = eax;
-		((int *)s)[1] = eax;
-		return s;
-	}
-	if (count == 2*4 + 1) small_store("stosl; stosl; stosb");
-	if (count == 2*4 + 2) small_store("stosl; stosl; stosw");
-	if (count == 2*4 + 3) small_store("stosl; stosl; stosw; stosb");
-	if (count == 3*4 + 0) small_store("stosl; stosl; stosl");
-	if (count == 3*4 + 1) small_store("stosl; stosl; stosl; stosb");
-	if (count == 3*4 + 2) small_store("stosl; stosl; stosl; stosw");
-	if (count == 3*4 + 3) small_store("stosl; stosl; stosl; stosw; stosb");
-	if (count == 4*4 + 0) small_store("stosl; stosl; stosl; stosl");
-	if (count == 4*4 + 1) small_store("stosl; stosl; stosl; stosl; stosb");
-	/* going over 7 bytes is suboptimal */
-	/* stosw is 2-byte insn, so this one takes 6 bytes: */
-	if (count == 4*4 + 2) small_store("stosl; stosl; stosl; stosl; stosw");
-	/* 7 bytes */
-	if (count == 4*4 + 3) small_store("stosl; stosl; stosl; stosl; stosw; stosb");
-	/* 5 bytes */
-	if (count == 5*4 + 0) small_store("stosl; stosl; stosl; stosl; stosl");
-	/* 6 bytes */
-	if (count == 5*4 + 1) small_store("stosl; stosl; stosl; stosl; stosl; stosb");
-	/* 7 bytes */
-	if (count == 5*4 + 2) small_store("stosl; stosl; stosl; stosl; stosl; stosw");
-	/* 8 bytes, but oh well... */
-	if (count == 5*4 + 3) small_store("stosl; stosl; stosl; stosl; stosl; stosw; stosb");
-	/* 6 bytes */
-	if (count == 6*4 + 0) small_store("stosl; stosl; stosl; stosl; stosl; stosl");
-	/* the rest would be 7+ bytes and is handled below instead */
-#undef small_store
-
-	/* Not small, but multiple-of-4 store.
-	 * "mov <const>,%ecx; rep; stosl" sequence is 7 bytes */
-	__asm__ __volatile__(
-		"	rep; stosl\n"
-		: "=&c" (ecx), "=&D" (edi)
-		: "a" (eax), "0" (count / 4), "1" (s)
-		: "memory"
-	);
-	return s;
-}
-#if 1 /* -51 bytes on shared i386 build with gcc 4.3.0 */
-#define memset(s, c, count) ( \
-	( !(__builtin_constant_p(c) && __builtin_constant_p(count)) \
-	  || ((count) > (6*4 + 0) && ((count) % 4) != 0) \
-	) \
-	? memset((s), (c), (count)) \
-	: inlined_memset_const_c_count4((s), (c), (count)) \
-	)
-#endif
-
-
-static __always_inline
-void *inlined_mempcpy_const_count4(void *d, const void *s, unsigned count)
-{
-	int ecx;
-	char *esi, *edi;
-
-	if (count == 0)
-		return d;
-
-	if (count == 1) {
-		*(char *)d = *(char *)s;
-		return d + 1;
-	}
-	if (count == 2) {
-		*(short *)d = *(short *)s;
-		return d + 2;
-	}
-	/* Small string moves: don't clobber ecx
-	 * (clobbers only esi and edi) */
-#define small_move(arg) { \
-	__asm__ __volatile__( \
-		arg \
-		: "=&S" (esi), "=&D" (edi) \
-		: "0" (s), "1" (d) \
-		: "memory" \
-	); \
-	return edi; \
-}
-	if (count == 3) small_move("movsw; movsb");
-	if (count == 1*4 + 0) {
-		*(int *)d = *(int *)s;
-		return d + 4;
-	}
-	if (count == 1*4 + 1) small_move("movsl; movsb");
-	if (count == 1*4 + 2) small_move("movsl; movsw");
-	if (count == 1*4 + 3) small_move("movsl; movsw; movsb");
-	if (count == 2*4 + 0) small_move("movsl; movsl");
-	if (count == 2*4 + 1) small_move("movsl; movsl; movsb");
-	if (count == 2*4 + 2) small_move("movsl; movsl; movsw");
-	if (count == 2*4 + 3) small_move("movsl; movsl; movsw; movsb");
-	if (count == 3*4 + 0) small_move("movsl; movsl; movsl");
-	if (count == 3*4 + 1) small_move("movsl; movsl; movsl; movsb");
-	if (count == 3*4 + 2) small_move("movsl; movsl; movsl; movsw");
-	if (count == 3*4 + 3) small_move("movsl; movsl; movsl; movsw; movsb");
-	if (count == 4*4 + 0) small_move("movsl; movsl; movsl; movsl");
-	if (count == 4*4 + 1) small_move("movsl; movsl; movsl; movsl; movsb");
-	/* going over 7 bytes is suboptimal */
-	/* movsw is 2-byte insn, so this one takes 6 bytes: */
-	if (count == 4*4 + 2) small_move("movsl; movsl; movsl; movsl; movsw");
-	/* 7 bytes */
-	if (count == 4*4 + 3) small_move("movsl; movsl; movsl; movsl; movsw; movsb");
-	/* 5 bytes */
-	if (count == 5*4 + 0) small_move("movsl; movsl; movsl; movsl; movsl");
-	/* 6 bytes */
-	if (count == 5*4 + 1) small_move("movsl; movsl; movsl; movsl; movsl; movsb");
-	/* 7 bytes */
-	if (count == 5*4 + 2) small_move("movsl; movsl; movsl; movsl; movsl; movsw");
-	/* 8 bytes, but oh well... */
-	if (count == 5*4 + 3) small_move("movsl; movsl; movsl; movsl; movsl; movsw; movsb");
-	/* 6 bytes */
-	if (count == 6*4 + 0) small_move("movsl; movsl; movsl; movsl; movsl; movsl");
-	/* the rest would be 7+ bytes and is handled below instead */
-#undef small_move
-
-	/* Not small, but multiple-of-4 move.
-	 * "mov <const>,%ecx; rep; movsl" sequence is 7 bytes */
-	__asm__ __volatile__(
-		"	rep; movsl\n"
-		: "=&c" (ecx), "=&S" (esi), "=&D" (edi)
-		: "0" (count / 4), "1" (s), "2" (d)
-		: "memory"
-	);
-	return edi;
-}
-static __always_inline
-void *inlined_memcpy_const_count4(void *d, const void *s, unsigned count)
-{
-	inlined_mempcpy_const_count4(d, s, count);
-	return d;
-}
-#if 1 /* +34 bytes on shared i386 build with gcc 4.3.0 */
-#define mempcpy(d, s, count) ( \
-	( !(__builtin_constant_p(count)) \
-	  || ((count) > (6*4 + 0) && ((count) % 4) != 0) \
-	) \
-	? mempcpy((d), (s), (count)) \
-	: inlined_mempcpy_const_count4((d), (s), (count)) \
-	)
-#define memcpy(d, s, count) ( \
-	( !(__builtin_constant_p(count)) \
-	  || ((count) > (6*4 + 0) && ((count) % 4) != 0) \
-	) \
-	? memcpy((d), (s), (count)) \
-	: inlined_memcpy_const_count4((d), (s), (count)) \
-	)
-#endif
-
-
-static __always_inline
-size_t inlined_strlen(const char *s)
-{
-	int edi;
-	int ecx;
-	__asm__ __volatile__(
-		"	repne; scasb\n"
-	/*	"	notl	%0\n" */
-	/*	"	decl	%0\n" */
-		: "=c" (ecx), "=&D" (edi)
-		: "1" (s), "a" (0), "0" (0xffffffffu)
-		/* : no clobbers */
-	);
-	return -ecx - 1;
-}
-#if 0 /* +1108 bytes on shared i386 build with gcc 4.3.0 */
-#define strlen(s) inlined_strlen(s)
-#endif
-
-
-static __always_inline
-char *inlined_stpcpy(char *dest, const char *src)
-{
-	char *esi, *edi;
-	int eax;
-	__asm__ __volatile__(
-		"1:	lodsb\n"
-		"	stosb\n"
-		"	testb	%%al, %%al\n"
-		"	jnz	1b\n"
-		: "=&S" (esi), "=&D" (edi), "=&a" (eax)
-		: "0" (src), "1" (dest)
-		: "memory"
-	);
-	return edi - 1;
-}
-static __always_inline
-char *inlined_strcpy(char *dest, const char *src)
-{
-	inlined_stpcpy(dest, src);
-	return dest;
-}
-#if 0 /* +562 bytes on shared i386 build with gcc 4.3.0 */
-#define stpcpy(dest, src) inlined_stpcpy(dest, src)
-#define strcpy(dest, src) inlined_strcpy(dest, src)
-#endif
-
-
-static __always_inline
-void *inlined_memchr(const void *s, int c, size_t count)
-{
-	void *edi;
-	int ecx;
-	/* Unfortunately, c gets loaded to %eax (wide insn), not %al */
-	__asm__ __volatile__(
-		"	jecxz	1f\n"
-		"	repne; scasb\n"
-		"	leal	-1(%%edi), %%edi\n"
-		"	je	2f\n"
-		"1:\n"
-		"	xorl	%%edi, %%edi\n"
-		"2:\n"
-		: "=&D" (edi), "=&c" (ecx)
-		: "a" (c), "0" (s), "1" (count)
-		/* : no clobbers */
-	);
-	return edi;
-}
-static __always_inline
-void *inlined_memchr_const_c(const void *s, int c, size_t count)
-{
-	void *edi;
-	int ecx, eax;
-	__asm__ __volatile__(
-		"	jecxz	1f\n"
-		"	movb	%4, %%al\n" /* const c to %%al */
-		"	repne; scasb\n"
-		"	leal	-1(%%edi), %%edi\n"
-		"	je	2f\n"
-		"1:\n"
-		"	xorl	%%edi, %%edi\n"
-		"2:\n"
-		: "=&D" (edi), "=&c" (ecx), "=&a" (eax)
-		: "0" (s), "i" (c), "1" (count)
-		/* : no clobbers */
-	);
-	return edi;
-}
-#if 1 /* +2 bytes on shared i386 build with gcc 4.3.0 */
-#define memchr(s, c, count) ( \
-	__builtin_constant_p(c) \
-	? inlined_memchr_const_c(s, (c) & 0xff, count) \
-	: inlined_memchr(s, c, count) \
-	)
-#endif
-
-#endif /* _LIBC_STRING_i386_H  */