2004-12-17 Christian Groessler <chris@groessler.org>
* libc/machine/z8k/memcmp.S: New file.
* libc/machine/z8k/memcpy.S: Ditto.
* libc/machine/z8k/memmove.S: Ditto.
* libc/machine/z8k/memset.S: Ditto.
* libc/machine/z8k/Makefile.am: Add new files.
* libc/machine/z8k/Makefile.in: Regenerated.
* libc/machine/z8k/setjmp.S: Fix indirect register usage in Z8002
part. Implement Z8002 stdcall version.
This commit is contained in:
Jeff Johnston
parent
8232f2e050
commit
d8ae996c41
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@ -1,3 +1,14 @@
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2004-12-17 Christian Groessler <chris@groessler.org>
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* libc/machine/z8k/memcmp.S: New file.
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* libc/machine/z8k/memcpy.S: Ditto.
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* libc/machine/z8k/memmove.S: Ditto.
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* libc/machine/z8k/memset.S: Ditto.
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* libc/machine/z8k/Makefile.am: Add new files.
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* libc/machine/z8k/Makefile.in: Regenerated.
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* libc/machine/z8k/setjmp.S: Fix indirect register usage in Z8002
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part. Implement Z8002 stdcall version.
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2004-12-13 Jeff Johnston <jjohnstn@redhat.com>
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* libc/stdio/fread.c (fread): For unbuffered I/O, attempt
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@ -6,7 +6,7 @@ INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
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noinst_LIBRARIES = lib.a
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lib_a_SOURCES = setjmp.S
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lib_a_SOURCES = setjmp.S memset.S memcpy.S memmove.S memcmp.S
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ACLOCAL_AMFLAGS = -I ../../..
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CONFIG_STATUS_DEPENDENCIES = $(newlib_basedir)/configure.host
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@ -89,7 +89,7 @@ INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
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noinst_LIBRARIES = lib.a
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lib_a_SOURCES = setjmp.S
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lib_a_SOURCES = setjmp.S memset.S memcpy.S memmove.S memcmp.S
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ACLOCAL_AMFLAGS = -I ../../..
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CONFIG_STATUS_DEPENDENCIES = $(newlib_basedir)/configure.host
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@ -103,7 +103,7 @@ DEFS = @DEFS@ -I. -I$(srcdir)
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CPPFLAGS = @CPPFLAGS@
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LIBS = @LIBS@
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lib_a_LIBADD =
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lib_a_OBJECTS = setjmp.o
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lib_a_OBJECTS = setjmp.o memset.o memcpy.o memmove.o memcmp.o
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CFLAGS = @CFLAGS@
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COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
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CCLD = $(CC)
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@ -0,0 +1,185 @@
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/*
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* memcmp routine for Z8000
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* Copyright (C) 2004 Christian Groessler <chris@groessler.org>
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*
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* Permission to use, copy, modify, and distribute this file
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* for any purpose is hereby granted without fee, provided that
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* the above copyright notice and this notice appears in all
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* copies.
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*
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* This file is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*/
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/* int memcmp(const void *b1, const void *b2, size_t length);
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*/
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name "memcmp.S"
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.text
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even
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global _memcmp
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_memcmp:
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#ifdef __Z8001__
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segm
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#ifdef __STD_CALL__
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ldl rr6,rr14(#4)
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ldl rr4,rr14(#8)
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ldl rr2,rr14(#12)
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#endif
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/* rr2 - length (high word ignored)
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* rr4 - b2
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* rr6 - b1
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*/
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clr r1 /* initialize return value */
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testl rr2
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jr z,finish
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bitb rl7,#0 /* odd b1? */
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jr nz,testb2
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bitb rl5,#0 /* odd b2? */
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jr nz,odd_cmp /* b1 even, b2 odd */
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jr t,even_cmp
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testb2:
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bitb rl5,#0
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jr z,odd_cmp /* b2 even, b1 odd */
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cpsib @rr6,@rr4,r3,eq
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jr z,beq /* bytes are the same */
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jr t,byte_diff
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beq: jr ov,finish /* jump if r3 is zero now */
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/* compare words */
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even_cmp:
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ld r2,r3 /* remember length */
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srl r3,#1
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jr z,no_words
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cpsir @rr6,@rr4,r3,ne
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jr nz,no_words
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dec r7,#2
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dec r5,#2 /* point to different bytes */
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ldk r3,#2
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jr t,odd_cmp
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no_words:
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bitb rl2,#0 /* odd length? */
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jr z,finish
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cpsib @rr6,@rr4,r3,eq
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jr z,finish /* last bytes are the same */
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jr t,byte_diff
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/* compare bytes */
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odd_cmp:
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cpsirb @rr6,@rr4,r3,ne
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jr nz,finish
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byte_diff:
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dec r7,#1
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dec r5,#1 /* point to different bytes */
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ldb rl1,@rr6
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clr r0
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ldb rl0,@rr4
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sub r1,r0
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finish: /* set return value */
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#ifdef __STD_CALL__
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ld r7,r1
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#else
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ld r2,r1
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#endif
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#else /* above Z8001, below Z8002 */
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unsegm
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#ifdef __STD_CALL__
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ld r7,r15(#2)
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ld r6,r15(#4)
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ld r5,r15(#6)
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#endif
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/* r5 - length
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* r6 - b2
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* r7 - b1
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*/
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clr r1 /* initialize return value */
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test r5
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jr z,finish
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bitb rl7,#0 /* odd destination address? */
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jr nz,testb2
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bitb rl6,#0 /* odd source address? */
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jr nz,odd_cmp /* b1 even, b2 odd */
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jr t,even_cmp
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testb2:
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bitb rl6,#0
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jr z,odd_cmp /* b2 even, b1 odd */
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cpsib @r7,@r6,r5,eq
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jr z,beq /* bytes are the same */
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jr t,byte_diff
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beq: jr ov,finish /* jump if r3 is zero now */
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/* compare words */
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even_cmp:
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ld r4,r5 /* remember length */
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srl r5,#1
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jr z,no_words
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cpsir @r7,@r6,r5,ne
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jr nz,no_words
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dec r7,#2
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dec r6,#2 /* point to different bytes */
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ldk r5,#2
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jr t,odd_cmp
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no_words:
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bitb rl4,#0 /* odd length? */
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jr z,finish
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cpsib @r7,@r6,r4,eq
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jr z,finish /* last bytes are the same */
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jr t,byte_diff
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/* compare bytes */
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odd_cmp:
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cpsirb @r7,@r6,r5,ne
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jr nz,finish
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byte_diff:
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dec r7,#1
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dec r6,#1 /* point to different bytes */
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ldb rl1,@r7
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clr r0
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ldb rl0,@r6
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sub r1,r0
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finish:
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#ifdef __STD_CALL__
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ld r7,r1
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#else
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ld r2,r1
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#endif
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#endif /* Z8002 */
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ret
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.end
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@ -0,0 +1,145 @@
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/*
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* memcpy routine for Z8000
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* Copyright (C) 2004 Christian Groessler <chris@groessler.org>
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*
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* Permission to use, copy, modify, and distribute this file
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* for any purpose is hereby granted without fee, provided that
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* the above copyright notice and this notice appears in all
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* copies.
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*
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* This file is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*/
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/* void *memcpy(void *dest, const void *src, size_t length);
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*/
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name "memcpy.S"
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.text
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even
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global _memcpy
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global memmove_entry
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_memcpy:
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#ifdef __Z8001__
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segm
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#ifdef __STD_CALL__
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ldl rr6,rr14(#4)
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ldl rr4,rr14(#8)
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ldl rr2,rr14(#12)
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#else
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pushl @rr14,rr6
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#endif
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/* rr2 - length (high word ignored)
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* rr4 - src
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* rr6 - dest
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*/
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testl rr2
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jr z,finish
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memmove_entry: /* external entry point from memmove */
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bitb rl7,#0 /* odd destination address? */
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jr nz,testsrc
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bitb rl5,#0 /* odd source address? */
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jr nz,odd_copy
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jr t,even_copy /* dest even, src odd */
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testsrc:
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bitb rl5,#0
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jr z,odd_copy /* src even, dest odd */
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ldib @rr6,@rr4,r3
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jr ov,finish /* jump if r3 is zero now */
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/* copy words */
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even_copy:
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ld r2,r3 /* remember length */
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srl r3,#1
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jr z,no_words
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ldir @rr6,@rr4,r3
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no_words:
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bitb rl2,#0 /* odd length? */
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jr z,finish
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ldib @rr6,@rr4,r2 /* yes, copy last byte */
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jr finish
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/* copy bytes */
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odd_copy:
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ldirb @rr6,@rr4,r3
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finish:
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#ifdef __STD_CALL__
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ldl rr6,rr14(#4)
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#else
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popl rr2,@rr14
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#endif
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#else /* above Z8001, below Z8002 */
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unsegm
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#ifdef __STD_CALL__
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ld r7,r15(#2)
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ld r6,r15(#4)
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ld r5,r15(#6)
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#else
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ld r2,r7 /* buffer pointer return value */
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#endif
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/* r5 - length
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* r6 - src
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* r7 - dest
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*/
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test r5
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jr z,finish
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memmove_entry: /* external entry point from memmove */
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bitb rl7,#0 /* odd destination address? */
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jr nz,testsrc
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bitb rl6,#0 /* odd source address? */
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jr nz,odd_copy
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jr t,even_copy /* dest even, src odd */
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testsrc:
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bitb rl6,#0
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jr z,odd_copy /* src even, dest odd */
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ldib @r7,@r6,r5
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jr ov,finish /* jump if r5 is zero now */
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/* copy words */
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even_copy:
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ld r4,r5 /* remember length */
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srl r5,#1
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jr z,no_words
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ldir @r7,@r6,r5
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no_words:
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bitb rl4,#0 /* odd length? */
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jr z,finish
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ldib @r7,@r6,r4 /* yes, copy last byte */
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jr finish
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/* copy bytes */
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odd_copy:
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ldirb @r7,@r6,r5
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finish:
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#ifdef __STD_CALL__
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ld r7,r15(#2)
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#endif
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#endif /* Z8002 */
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ret
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.end
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@ -0,0 +1,180 @@
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/*
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* memmove routine for Z8000
|
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* Copyright (C) 2004 Christian Groessler <chris@groessler.org>
|
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*
|
||||
* Permission to use, copy, modify, and distribute this file
|
||||
* for any purpose is hereby granted without fee, provided that
|
||||
* the above copyright notice and this notice appears in all
|
||||
* copies.
|
||||
*
|
||||
* This file is distributed WITHOUT ANY WARRANTY; without even the implied
|
||||
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
||||
*/
|
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|
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/* void *memmove(void *dest, const void *src, size_t length);
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*/
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name "memmove.S"
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.text
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even
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global _memmove
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|
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_memmove:
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|
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#ifdef __Z8001__
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segm
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#ifdef __STD_CALL__
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ldl rr6,rr14(#4)
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ldl rr4,rr14(#8)
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ldl rr2,rr14(#12)
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#else
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pushl @rr14,rr6
|
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#endif
|
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|
||||
/* rr2 - length (high word ignored)
|
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* rr4 - src
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* rr6 - dest
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*/
|
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|
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testl rr2
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jr z,finish
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/* check for destructive overlap (src < dest && dest < src + length) */
|
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|
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cpl rr6,rr4
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jp ule,memmove_entry /* non-destructive, let memcpy do the work */
|
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ldl rr0,rr2
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addl rr0,rr4 /* rr0 = src + length */
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cpl rr0,rr6
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jp ult,memmove_entry /* non-destructive, let memcpy do the work */
|
||||
|
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/* set-up pointers to copy backwards, add (length - 1) */
|
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addl rr4,rr2 /* src + length */
|
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addl rr6,rr2 /* dest + length */
|
||||
subl rr4,#1
|
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subl rr6,#1
|
||||
|
||||
/* check alignment */
|
||||
bitb rl7,#0 /* odd destination address? */
|
||||
jr z,testsrc
|
||||
bitb rl5,#0 /* odd source address? */
|
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jr z,odd_copy
|
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jr even_copy
|
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|
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testsrc:
|
||||
bitb rl5,#0
|
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jr nz,odd_copy /* src even, dest odd */
|
||||
lddb @rr6,@rr4,r3
|
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jr ov,finish /* jump if r5 is zero now */
|
||||
|
||||
/* copy words */
|
||||
even_copy:
|
||||
ld r2,r3 /* remember length */
|
||||
srl r3,#1
|
||||
/* jr z,no_words it cannot be zero here */
|
||||
|
||||
dec r5,#1
|
||||
dec r7,#1
|
||||
lddr @rr6,@rr4,r3
|
||||
|
||||
no_words:
|
||||
bitb rl2,#0 /* odd length? */
|
||||
jr z,finish
|
||||
inc r5,#1
|
||||
inc r7,#1
|
||||
lddb @rr6,@rr4,r2 /* yes, copy last byte */
|
||||
jr finish
|
||||
|
||||
/* copy bytes */
|
||||
odd_copy:
|
||||
lddrb @rr6,@rr4,r3
|
||||
|
||||
finish:
|
||||
#ifdef __STD_CALL__
|
||||
ldl rr6,rr14(#4)
|
||||
#else
|
||||
popl rr2,@rr14
|
||||
#endif
|
||||
|
||||
|
||||
#else /* above Z8001, below Z8002 */
|
||||
|
||||
|
||||
unsegm
|
||||
|
||||
#ifdef __STD_CALL__
|
||||
ld r7,r15(#2)
|
||||
ld r6,r15(#4)
|
||||
ld r5,r15(#6)
|
||||
#else
|
||||
ld r2,r7 /* buffer pointer return value */
|
||||
#endif
|
||||
|
||||
/* r5 - length
|
||||
* r6 - src
|
||||
* r7 - dest
|
||||
*/
|
||||
test r5
|
||||
jr z,finish
|
||||
|
||||
/* check for destructive overlap (src < dest && dest < src + length) */
|
||||
|
||||
cp r7,r6
|
||||
jp ule,memmove_entry /* non-destructive, let memcpy do the work */
|
||||
ld r0,r5
|
||||
add r0,r6 /* r0 = src + length */
|
||||
cp r0,r7
|
||||
jp ult,memmove_entry /* non-destructive, let memcpy do the work */
|
||||
|
||||
/* set-up pointers to copy backwards, add (length - 1) */
|
||||
add r6,r5 /* src + length */
|
||||
add r7,r5 /* dest + length */
|
||||
dec r6,#1
|
||||
dec r7,#1
|
||||
|
||||
/* check alignment */
|
||||
bitb rl7,#0 /* odd destination address? */
|
||||
jr z,testsrc
|
||||
bitb rl6,#0 /* odd source address? */
|
||||
jr z,odd_copy
|
||||
jr even_copy
|
||||
|
||||
testsrc:
|
||||
bitb rl6,#0
|
||||
jr nz,odd_copy /* src even, dest odd */
|
||||
lddb @r7,@r6,r5
|
||||
jr ov,finish /* jump if r5 is zero now */
|
||||
|
||||
/* copy words */
|
||||
even_copy:
|
||||
ld r4,r5 /* remember length */
|
||||
srl r5,#1
|
||||
/* jr z,no_words it cannot be zero here */
|
||||
|
||||
dec r6,#1
|
||||
dec r7,#1
|
||||
lddr @r7,@r6,r5
|
||||
|
||||
no_words:
|
||||
bitb rl4,#0 /* odd length? */
|
||||
jr z,finish
|
||||
inc r6,#1
|
||||
inc r7,#1
|
||||
lddb @r7,@r6,r4 /* yes, copy last byte */
|
||||
jr finish
|
||||
|
||||
/* copy bytes */
|
||||
odd_copy:
|
||||
lddrb @r7,@r6,r5
|
||||
|
||||
finish:
|
||||
#ifdef __STD_CALL__
|
||||
ld r7,r15(#2)
|
||||
#endif
|
||||
|
||||
#endif /* Z8002 */
|
||||
|
||||
ret
|
||||
.end
|
||||
|
|
@ -0,0 +1,135 @@
|
|||
/*
|
||||
* memset routine for Z8000
|
||||
* Copyright (C) 2004 Christian Groessler <chris@groessler.org>
|
||||
*
|
||||
* Permission to use, copy, modify, and distribute this file
|
||||
* for any purpose is hereby granted without fee, provided that
|
||||
* the above copyright notice and this notice appears in all
|
||||
* copies.
|
||||
*
|
||||
* This file is distributed WITHOUT ANY WARRANTY; without even the implied
|
||||
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
||||
*/
|
||||
|
||||
/* void *memset(void *buffer, int value, size_t length);
|
||||
*/
|
||||
|
||||
name "memset.S"
|
||||
|
||||
.text
|
||||
even
|
||||
global _memset
|
||||
|
||||
_memset:
|
||||
|
||||
#ifdef __Z8001__
|
||||
segm
|
||||
|
||||
#ifdef __STD_CALL__
|
||||
ldl rr6,rr14(#4)
|
||||
ld r5,rr14(#8)
|
||||
ldl rr2,rr14(#10)
|
||||
#else
|
||||
pushl @rr14,rr6
|
||||
#endif
|
||||
|
||||
/* rr2 - length
|
||||
* rl5 - value
|
||||
* rr6 - buffer
|
||||
*/
|
||||
testl rr2
|
||||
jr z,finish
|
||||
|
||||
ldb rh5,rl5
|
||||
ld r1,r5 /* r1 contains value */
|
||||
bit r7,#0
|
||||
jr z,not_odd
|
||||
|
||||
ldb @rr6,rl1
|
||||
inc r7,#1
|
||||
subl rr2,#1
|
||||
jr z,finish
|
||||
|
||||
not_odd:ld r0,r3 /* remember length */
|
||||
srl r3,#1
|
||||
jr z,no_words
|
||||
|
||||
ldl rr4,rr6
|
||||
ld @rr6,r1
|
||||
inc r7,#2
|
||||
dec r3,#1
|
||||
jr z,no_words
|
||||
|
||||
ldir @rr6,@rr4,r3 /* fill words */
|
||||
|
||||
no_words:
|
||||
bit r0,#0 /* one byte remaining? */
|
||||
jr z,finish
|
||||
|
||||
ldb @rr6,rl1
|
||||
|
||||
finish:
|
||||
#ifdef __STD_CALL__
|
||||
ldl rr6,rr14(#4)
|
||||
#else
|
||||
popl rr2,@rr14
|
||||
#endif
|
||||
|
||||
|
||||
#else /* above Z8001, below Z8002 */
|
||||
|
||||
|
||||
unsegm
|
||||
|
||||
#ifdef __STD_CALL__
|
||||
ld r7,r15(#2)
|
||||
ld r6,r15(#4)
|
||||
ld r5,r15(#6)
|
||||
#else
|
||||
ld r2,r7 /* buffer pointer return value */
|
||||
#endif
|
||||
|
||||
/* r5 - length
|
||||
* r6 - value
|
||||
* r7 - buffer
|
||||
*/
|
||||
test r5
|
||||
jr z,finish
|
||||
|
||||
ldb rh6,rl6
|
||||
ld r1,r6 /* r1 contains value */
|
||||
bit r7,#0
|
||||
jr z,not_odd
|
||||
|
||||
ldb @r7,rl1
|
||||
inc r7,#1
|
||||
dec r5,#1
|
||||
jr z,finish
|
||||
|
||||
not_odd:ld r0,r5 /* remember length */
|
||||
srl r5,#1
|
||||
jr z,no_words
|
||||
|
||||
ld r4,r7
|
||||
ld @r7,r1
|
||||
inc r7,#2
|
||||
dec r5,#1
|
||||
jr z,no_words
|
||||
|
||||
ldir @r7,@r4,r5 /* fill words */
|
||||
|
||||
no_words:
|
||||
bit r0,#0 /* one byte remaining? */
|
||||
jr z,finish
|
||||
|
||||
ldb @r7,rl1
|
||||
|
||||
finish:
|
||||
#ifdef __STD_CALL__
|
||||
ld r7,r15(#2)
|
||||
#endif
|
||||
|
||||
#endif /* Z8002 */
|
||||
|
||||
ret
|
||||
.end
|
||||
|
|
@ -1,10 +1,9 @@
|
|||
.global _setjmp
|
||||
.global _longjmp
|
||||
|
||||
#ifdef __Z8001__
|
||||
segm
|
||||
|
||||
.global _setjmp
|
||||
.globl _longjmp
|
||||
|
||||
#ifdef __STD_CALL__
|
||||
|
||||
_setjmp:
|
||||
|
|
@ -56,10 +55,31 @@ _longjmp:
|
|||
unseg
|
||||
|
||||
#ifdef __STD_CALL__
|
||||
#warning Z8002 std call not implemented!
|
||||
#endif
|
||||
|
||||
.global _setjmp
|
||||
_setjmp:
|
||||
ld r7,r15(#2) ! get argument
|
||||
ld r2,@r15 ! fetch pc
|
||||
ld @r7,r2 ! save it
|
||||
ldl r7(#14),rr8
|
||||
ldl r7(#2),rr10
|
||||
ldl r7(#6),rr12 ! remember frame pointer
|
||||
ldl r7(#10),rr14 ! remember stack pointer
|
||||
ldk r7,#0
|
||||
ret t
|
||||
|
||||
_longjmp:
|
||||
ld r4,r15(#2) ! get first argument (jmp_buf)
|
||||
ld r7,r15(#4) ! get return value
|
||||
ldl rr8,r4(#14)
|
||||
ldl rr10,r4(#2)
|
||||
ldl rr12,r4(#6) ! restore old frame pointer
|
||||
ldl rr14,r4(#10) ! restore old stack pointer
|
||||
ld r4,@r4 ! return address
|
||||
inc r15,#2
|
||||
jp @r4
|
||||
|
||||
#else /* above __STD_CALL_, below not */
|
||||
|
||||
_setjmp:
|
||||
ld r2,@r15 ! fetch pc
|
||||
ld @r7,r2 ! save it
|
||||
|
|
@ -69,14 +89,14 @@ _setjmp:
|
|||
ldk r2,#0
|
||||
ret t
|
||||
|
||||
.globl _longjmp
|
||||
|
||||
_longjmp:
|
||||
ld r2,r6 ! get return value
|
||||
ld r4,@r7
|
||||
ldl rr10,rr7(4)
|
||||
ldl rr12,rr7(8)
|
||||
ldl rr14,rr7(12)
|
||||
jp @rr4
|
||||
ldl rr10,r7(4)
|
||||
ldl rr12,r7(8)
|
||||
ldl rr14,r7(12)
|
||||
inc r15,#2
|
||||
jp @r4
|
||||
|
||||
#endif /* not __STD_CALL__ */
|
||||
#endif /* Z8002 version */
|
||||
|
|
|
|||
Loading…
Reference in New Issue