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-rw-r--r--sysdeps/powerpc/powerpc32/memset.S307
1 files changed, 0 insertions, 307 deletions
diff --git a/sysdeps/powerpc/powerpc32/memset.S b/sysdeps/powerpc/powerpc32/memset.S
deleted file mode 100644
index 8913a02698..0000000000
--- a/sysdeps/powerpc/powerpc32/memset.S
+++ /dev/null
@@ -1,307 +0,0 @@
-/* Optimized memset implementation for PowerPC.
-   Copyright (C) 1997-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <sysdep.h>
-
-/* __ptr_t [r3] memset (__ptr_t s [r3], int c [r4], size_t n [r5]));
-   Returns 's'.
-
-   The memset is done in four sizes: byte (8 bits), word (32 bits),
-   32-byte blocks (256 bits) and __cache_line_size (128, 256, 1024 bits).
-   There is a special case for setting whole cache lines to 0, which
-   takes advantage of the dcbz instruction.  */
-
-	.section	".text"
-EALIGN (memset, 5, 1)
-
-#define rTMP	r0
-#define rRTN	r3	/* initial value of 1st argument */
-#define rMEMP0	r3	/* original value of 1st arg */
-#define rCHR	r4	/* char to set in each byte */
-#define rLEN	r5	/* length of region to set */
-#define rMEMP	r6	/* address at which we are storing */
-#define rALIGN	r7	/* number of bytes we are setting now (when aligning) */
-#define rMEMP2	r8
-
-#define rPOS32	r7	/* constant +32 for clearing with dcbz */
-#define rNEG64	r8	/* constant -64 for clearing with dcbz */
-#define rNEG32	r9	/* constant -32 for clearing with dcbz */
-
-#define rGOT	r9	/* Address of the Global Offset Table.  */
-#define rCLS	r8	/* Cache line size obtained from static.  */
-#define rCLM	r9	/* Cache line size mask to check for cache alignment.  */
-
-/* take care of case for size <= 4  */
-	cmplwi	cr1, rLEN, 4
-	andi.	rALIGN, rMEMP0, 3
-	mr	rMEMP, rMEMP0
-	ble-	cr1, L(small)
-/* align to word boundary  */
-	cmplwi	cr5, rLEN, 31
-	rlwimi	rCHR, rCHR, 8, 16, 23
-	beq+	L(aligned)	/* 8th instruction from .align */
-	mtcrf	0x01, rMEMP0
-	subfic	rALIGN, rALIGN, 4
-	add	rMEMP, rMEMP, rALIGN
-	sub	rLEN, rLEN, rALIGN
-	bf+	31, L(g0)
-	stb	rCHR, 0(rMEMP0)
-	bt	30, L(aligned)
-L(g0):	sth	rCHR, -2(rMEMP)	/* 16th instruction from .align */
-/* take care of case for size < 31 */
-L(aligned):
-	mtcrf	0x01, rLEN
-	rlwimi	rCHR, rCHR, 16, 0, 15
-	ble	cr5, L(medium)
-/* align to cache line boundary...  */
-	andi.	rALIGN, rMEMP, 0x1C
-	subfic	rALIGN, rALIGN, 0x20
-	beq	L(caligned)
-	mtcrf	0x01, rALIGN
-	add	rMEMP, rMEMP, rALIGN
-	sub	rLEN, rLEN, rALIGN
-	cmplwi	cr1, rALIGN, 0x10
-	mr	rMEMP2, rMEMP
-	bf	28, L(a1)
-	stw	rCHR, -4(rMEMP2)
-	stwu	rCHR, -8(rMEMP2)
-L(a1):	blt	cr1, L(a2)
-	stw	rCHR, -4(rMEMP2) /* 32nd instruction from .align */
-	stw	rCHR, -8(rMEMP2)
-	stw	rCHR, -12(rMEMP2)
-	stwu	rCHR, -16(rMEMP2)
-L(a2):	bf	29, L(caligned)
-	stw	rCHR, -4(rMEMP2)
-/* now aligned to a cache line.  */
-L(caligned):
-	cmplwi	cr1, rCHR, 0
-	clrrwi.	rALIGN, rLEN, 5
-	mtcrf	0x01, rLEN	/* 40th instruction from .align */
-
-/* Check if we can use the special case for clearing memory using dcbz.
-   This requires that we know the correct cache line size for this
-   processor.  Getting the __cache_line_size may require establishing GOT
-   addressability, so branch out of line to set this up.  */
-	beq	cr1, L(checklinesize)
-
-/* Store blocks of 32-bytes (256-bits) starting on a 32-byte boundary.
-   Can't assume that rCHR is zero or that the cache line size is either
-   32-bytes or even known.  */
-L(nondcbz):
-	srwi	rTMP, rALIGN, 5
-	mtctr	rTMP
-	beq	L(medium)	/* we may not actually get to do a full line */
-	clrlwi.	rLEN, rLEN, 27
-	add	rMEMP, rMEMP, rALIGN
-	li	rNEG64, -0x40
-	bdz	L(cloopdone)	/* 48th instruction from .align */
-
-/* We can't use dcbz here as we don't know the cache line size.  We can
-   use "data cache block touch for store", which is safe.  */
-L(c3):	dcbtst	rNEG64, rMEMP
-	stw	rCHR, -4(rMEMP)
-	stw	rCHR, -8(rMEMP)
-	stw	rCHR, -12(rMEMP)
-	stw	rCHR, -16(rMEMP)
-	nop			/* let 601 fetch last 4 instructions of loop */
-	stw	rCHR, -20(rMEMP)
-	stw	rCHR, -24(rMEMP) /* 56th instruction from .align */
-	nop			/* let 601 fetch first 8 instructions of loop */
-	stw	rCHR, -28(rMEMP)
-	stwu	rCHR, -32(rMEMP)
-	bdnz	L(c3)
-L(cloopdone):
-	stw	rCHR, -4(rMEMP)
-	stw	rCHR, -8(rMEMP)
-	stw	rCHR, -12(rMEMP)
-	stw	rCHR, -16(rMEMP) /* 64th instruction from .align */
-	stw	rCHR, -20(rMEMP)
-	cmplwi	cr1, rLEN, 16
-	stw	rCHR, -24(rMEMP)
-	stw	rCHR, -28(rMEMP)
-	stwu	rCHR, -32(rMEMP)
-	beqlr
-	add	rMEMP, rMEMP, rALIGN
-	b	L(medium_tail2)	/* 72nd instruction from .align */
-
-	.align	5
-	nop
-/* Clear cache lines of memory in 128-byte chunks.
-   This code is optimized for processors with 32-byte cache lines.
-   It is further optimized for the 601 processor, which requires
-   some care in how the code is aligned in the i-cache.  */
-L(zloopstart):
-	clrlwi	rLEN, rLEN, 27
-	mtcrf	0x02, rALIGN
-	srwi.	rTMP, rALIGN, 7
-	mtctr	rTMP
-	li	rPOS32, 0x20
-	li	rNEG64, -0x40
-	cmplwi	cr1, rLEN, 16	/* 8 */
-	bf	26, L(z0)
-	dcbz	0, rMEMP
-	addi	rMEMP, rMEMP, 0x20
-L(z0):	li	rNEG32, -0x20
-	bf	25, L(z1)
-	dcbz	0, rMEMP
-	dcbz	rPOS32, rMEMP
-	addi	rMEMP, rMEMP, 0x40 /* 16 */
-L(z1):	cmplwi	cr5, rLEN, 0
-	beq	L(medium)
-L(zloop):
-	dcbz	0, rMEMP
-	dcbz	rPOS32, rMEMP
-	addi	rMEMP, rMEMP, 0x80
-	dcbz	rNEG64, rMEMP
-	dcbz	rNEG32, rMEMP
-	bdnz	L(zloop)
-	beqlr	cr5
-	b	L(medium_tail2)
-
-	.align	5
-L(small):
-/* Memset of 4 bytes or less.  */
-	cmplwi	cr5, rLEN, 1
-	cmplwi	cr1, rLEN, 3
-	bltlr	cr5
-	stb	rCHR, 0(rMEMP)
-	beqlr	cr5
-	nop
-	stb	rCHR, 1(rMEMP)
-	bltlr	cr1
-	stb	rCHR, 2(rMEMP)
-	beqlr	cr1
-	nop
-	stb	rCHR, 3(rMEMP)
-	blr
-
-/* Memset of 0-31 bytes.  */
-	.align	5
-L(medium):
-	cmplwi	cr1, rLEN, 16
-L(medium_tail2):
-	add	rMEMP, rMEMP, rLEN
-L(medium_tail):
-	bt-	31, L(medium_31t)
-	bt-	30, L(medium_30t)
-L(medium_30f):
-	bt-	29, L(medium_29t)
-L(medium_29f):
-	bge-	cr1, L(medium_27t)
-	bflr-	28
-	stw	rCHR, -4(rMEMP)	/* 8th instruction from .align */
-	stw	rCHR, -8(rMEMP)
-	blr
-
-L(medium_31t):
-	stbu	rCHR, -1(rMEMP)
-	bf-	30, L(medium_30f)
-L(medium_30t):
-	sthu	rCHR, -2(rMEMP)
-	bf-	29, L(medium_29f)
-L(medium_29t):
-	stwu	rCHR, -4(rMEMP)
-	blt-	cr1, L(medium_27f) /* 16th instruction from .align */
-L(medium_27t):
-	stw	rCHR, -4(rMEMP)
-	stw	rCHR, -8(rMEMP)
-	stw	rCHR, -12(rMEMP)
-	stwu	rCHR, -16(rMEMP)
-L(medium_27f):
-	bflr-	28
-L(medium_28t):
-	stw	rCHR, -4(rMEMP)
-	stw	rCHR, -8(rMEMP)
-	blr
-
-L(checklinesize):
-#ifdef SHARED
-	mflr	rTMP
-/* If the remaining length is less the 32 bytes then don't bother getting
-   the cache line size.  */
-	beq	L(medium)
-/* Establishes GOT addressability so we can load __cache_line_size
-   from static. This value was set from the aux vector during startup.  */
-	SETUP_GOT_ACCESS(rGOT,got_label)
-	addis	rGOT,rGOT,__cache_line_size-got_label@ha
-	lwz	rCLS,__cache_line_size-got_label@l(rGOT)
-	mtlr	rTMP
-#else
-/* Load __cache_line_size from static. This value was set from the
-   aux vector during startup.  */
-	lis	rCLS,__cache_line_size@ha
-/* If the remaining length is less the 32 bytes then don't bother getting
-   the cache line size.  */
-	beq	L(medium)
-	lwz	rCLS,__cache_line_size@l(rCLS)
-#endif
-
-/* If the cache line size was not set then goto to L(nondcbz), which is
-   safe for any cache line size.  */
-	cmplwi	cr1,rCLS,0
-	beq	cr1,L(nondcbz)
-
-/* If the cache line size is 32 bytes then goto to L(zloopstart),
-   which is coded specifically for 32-byte lines (and 601).  */
-	cmplwi	cr1,rCLS,32
-	beq	cr1,L(zloopstart)
-
-/* Now we know the cache line size and it is not 32-bytes.  However
-   we may not yet be aligned to the cache line and may have a partial
-   line to fill.  Touch it 1st to fetch the cache line.  */
-	dcbtst	0,rMEMP
-
-	addi	rCLM,rCLS,-1
-L(getCacheAligned):
-	cmplwi	cr1,rLEN,32
-	and.	rTMP,rCLM,rMEMP
-	blt	cr1,L(handletail32)
-	beq	L(cacheAligned)
-/* We are not aligned to start of a cache line yet.  Store 32-byte
-   of data and test again.  */
-	addi	rMEMP,rMEMP,32
-	addi	rLEN,rLEN,-32
-	stw	rCHR,-32(rMEMP)
-	stw	rCHR,-28(rMEMP)
-	stw	rCHR,-24(rMEMP)
-	stw	rCHR,-20(rMEMP)
-	stw	rCHR,-16(rMEMP)
-	stw	rCHR,-12(rMEMP)
-	stw	rCHR,-8(rMEMP)
-	stw	rCHR,-4(rMEMP)
-	b	L(getCacheAligned)
-
-/* Now we are aligned to the cache line and can use dcbz.  */
-L(cacheAligned):
-	cmplw	cr1,rLEN,rCLS
-	blt	cr1,L(handletail32)
-	dcbz	0,rMEMP
-	subf	rLEN,rCLS,rLEN
-	add	rMEMP,rMEMP,rCLS
-	b	L(cacheAligned)
-
-/* We are here because; the cache line size was set, it was not
-   32-bytes, and the remainder (rLEN) is now less than the actual cache
-   line size.  Set up the preconditions for L(nondcbz) and go there to
-   store the remaining bytes.  */
-L(handletail32):
-	clrrwi.	rALIGN, rLEN, 5
-	b	L(nondcbz)
-
-END (memset)
-libc_hidden_builtin_def (memset)
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