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yaml --- r: 360127 b: refs/heads/master c: 5210d1e h: refs/heads/master i: 360125: 4c61d23 360123: 590867c 360119: 9170256 360111: e9e593f 360095: b490f98 360063: 1933d5d v: v3
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Vineet Gupta
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Feb 11, 2013
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| --- | ||
| refs/heads/master: 6e35fa2d430538cd0609e499c6f789beea9e9798 | ||
| refs/heads/master: 5210d1e6889c8183ecad269e86e2d9c524015b5f |
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| /* | ||
| * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License version 2 as | ||
| * published by the Free Software Foundation. | ||
| * | ||
| * vineetg: May 2011 | ||
| * -We had half-optimised memset/memcpy, got better versions of those | ||
| * -Added memcmp, strchr, strcpy, strcmp, strlen | ||
| * | ||
| * Amit Bhor: Codito Technologies 2004 | ||
| */ | ||
|
|
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| #ifndef _ASM_ARC_STRING_H | ||
| #define _ASM_ARC_STRING_H | ||
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| #include <linux/types.h> | ||
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| #ifdef __KERNEL__ | ||
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| #define __HAVE_ARCH_MEMSET | ||
| #define __HAVE_ARCH_MEMCPY | ||
| #define __HAVE_ARCH_MEMCMP | ||
| #define __HAVE_ARCH_STRCHR | ||
| #define __HAVE_ARCH_STRCPY | ||
| #define __HAVE_ARCH_STRCMP | ||
| #define __HAVE_ARCH_STRLEN | ||
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| extern void *memset(void *ptr, int, __kernel_size_t); | ||
| extern void *memcpy(void *, const void *, __kernel_size_t); | ||
| extern void memzero(void *ptr, __kernel_size_t n); | ||
| extern int memcmp(const void *, const void *, __kernel_size_t); | ||
| extern char *strchr(const char *s, int c); | ||
| extern char *strcpy(char *dest, const char *src); | ||
| extern int strcmp(const char *cs, const char *ct); | ||
| extern __kernel_size_t strlen(const char *); | ||
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| #endif /* __KERNEL__ */ | ||
| #endif /* _ASM_ARC_STRING_H */ |
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| /* | ||
| * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License version 2 as | ||
| * published by the Free Software Foundation. | ||
| */ | ||
|
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| #include <asm/linkage.h> | ||
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| #ifdef __LITTLE_ENDIAN__ | ||
| #define WORD2 r2 | ||
| #define SHIFT r3 | ||
| #else /* BIG ENDIAN */ | ||
| #define WORD2 r3 | ||
| #define SHIFT r2 | ||
| #endif | ||
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| ARC_ENTRY memcmp | ||
| or r12,r0,r1 | ||
| asl_s r12,r12,30 | ||
| sub r3,r2,1 | ||
| brls r2,r12,.Lbytewise | ||
| ld r4,[r0,0] | ||
| ld r5,[r1,0] | ||
| lsr.f lp_count,r3,3 | ||
| lpne .Loop_end | ||
| ld_s WORD2,[r0,4] | ||
| ld_s r12,[r1,4] | ||
| brne r4,r5,.Leven | ||
| ld.a r4,[r0,8] | ||
| ld.a r5,[r1,8] | ||
| brne WORD2,r12,.Lodd | ||
| .Loop_end: | ||
| asl_s SHIFT,SHIFT,3 | ||
| bhs_s .Last_cmp | ||
| brne r4,r5,.Leven | ||
| ld r4,[r0,4] | ||
| ld r5,[r1,4] | ||
| #ifdef __LITTLE_ENDIAN__ | ||
| nop_s | ||
| ; one more load latency cycle | ||
| .Last_cmp: | ||
| xor r0,r4,r5 | ||
| bset r0,r0,SHIFT | ||
| sub_s r1,r0,1 | ||
| bic_s r1,r1,r0 | ||
| norm r1,r1 | ||
| b.d .Leven_cmp | ||
| and r1,r1,24 | ||
| .Leven: | ||
| xor r0,r4,r5 | ||
| sub_s r1,r0,1 | ||
| bic_s r1,r1,r0 | ||
| norm r1,r1 | ||
| ; slow track insn | ||
| and r1,r1,24 | ||
| .Leven_cmp: | ||
| asl r2,r4,r1 | ||
| asl r12,r5,r1 | ||
| lsr_s r2,r2,1 | ||
| lsr_s r12,r12,1 | ||
| j_s.d [blink] | ||
| sub r0,r2,r12 | ||
| .balign 4 | ||
| .Lodd: | ||
| xor r0,WORD2,r12 | ||
| sub_s r1,r0,1 | ||
| bic_s r1,r1,r0 | ||
| norm r1,r1 | ||
| ; slow track insn | ||
| and r1,r1,24 | ||
| asl_s r2,r2,r1 | ||
| asl_s r12,r12,r1 | ||
| lsr_s r2,r2,1 | ||
| lsr_s r12,r12,1 | ||
| j_s.d [blink] | ||
| sub r0,r2,r12 | ||
| #else /* BIG ENDIAN */ | ||
| .Last_cmp: | ||
| neg_s SHIFT,SHIFT | ||
| lsr r4,r4,SHIFT | ||
| lsr r5,r5,SHIFT | ||
| ; slow track insn | ||
| .Leven: | ||
| sub.f r0,r4,r5 | ||
| mov.ne r0,1 | ||
| j_s.d [blink] | ||
| bset.cs r0,r0,31 | ||
| .Lodd: | ||
| cmp_s WORD2,r12 | ||
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| mov_s r0,1 | ||
| j_s.d [blink] | ||
| bset.cs r0,r0,31 | ||
| #endif /* ENDIAN */ | ||
| .balign 4 | ||
| .Lbytewise: | ||
| breq r2,0,.Lnil | ||
| ldb r4,[r0,0] | ||
| ldb r5,[r1,0] | ||
| lsr.f lp_count,r3 | ||
| lpne .Lbyte_end | ||
| ldb_s r3,[r0,1] | ||
| ldb r12,[r1,1] | ||
| brne r4,r5,.Lbyte_even | ||
| ldb.a r4,[r0,2] | ||
| ldb.a r5,[r1,2] | ||
| brne r3,r12,.Lbyte_odd | ||
| .Lbyte_end: | ||
| bcc .Lbyte_even | ||
| brne r4,r5,.Lbyte_even | ||
| ldb_s r3,[r0,1] | ||
| ldb_s r12,[r1,1] | ||
| .Lbyte_odd: | ||
| j_s.d [blink] | ||
| sub r0,r3,r12 | ||
| .Lbyte_even: | ||
| j_s.d [blink] | ||
| sub r0,r4,r5 | ||
| .Lnil: | ||
| j_s.d [blink] | ||
| mov r0,0 | ||
| ARC_EXIT memcmp |
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| /* | ||
| * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License version 2 as | ||
| * published by the Free Software Foundation. | ||
| */ | ||
|
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| #include <asm/linkage.h> | ||
|
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| ARC_ENTRY memcpy | ||
| or r3,r0,r1 | ||
| asl_s r3,r3,30 | ||
| mov_s r5,r0 | ||
| brls.d r2,r3,.Lcopy_bytewise | ||
| sub.f r3,r2,1 | ||
| ld_s r12,[r1,0] | ||
| asr.f lp_count,r3,3 | ||
| bbit0.d r3,2,.Lnox4 | ||
| bmsk_s r2,r2,1 | ||
| st.ab r12,[r5,4] | ||
| ld.a r12,[r1,4] | ||
| .Lnox4: | ||
| lppnz .Lendloop | ||
| ld_s r3,[r1,4] | ||
| st.ab r12,[r5,4] | ||
| ld.a r12,[r1,8] | ||
| st.ab r3,[r5,4] | ||
| .Lendloop: | ||
| breq r2,0,.Last_store | ||
| ld r3,[r5,0] | ||
| #ifdef __LITTLE_ENDIAN__ | ||
| add3 r2,-1,r2 | ||
| ; uses long immediate | ||
| xor_s r12,r12,r3 | ||
| bmsk r12,r12,r2 | ||
| xor_s r12,r12,r3 | ||
| #else /* BIG ENDIAN */ | ||
| sub3 r2,31,r2 | ||
| ; uses long immediate | ||
| xor_s r3,r3,r12 | ||
| bmsk r3,r3,r2 | ||
| xor_s r12,r12,r3 | ||
| #endif /* ENDIAN */ | ||
| .Last_store: | ||
| j_s.d [blink] | ||
| st r12,[r5,0] | ||
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| .balign 4 | ||
| .Lcopy_bytewise: | ||
| jcs [blink] | ||
| ldb_s r12,[r1,0] | ||
| lsr.f lp_count,r3 | ||
| bhs_s .Lnox1 | ||
| stb.ab r12,[r5,1] | ||
| ldb.a r12,[r1,1] | ||
| .Lnox1: | ||
| lppnz .Lendbloop | ||
| ldb_s r3,[r1,1] | ||
| stb.ab r12,[r5,1] | ||
| ldb.a r12,[r1,2] | ||
| stb.ab r3,[r5,1] | ||
| .Lendbloop: | ||
| j_s.d [blink] | ||
| stb r12,[r5,0] | ||
| ARC_EXIT memcpy |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| /* | ||
| * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License version 2 as | ||
| * published by the Free Software Foundation. | ||
| */ | ||
|
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| #include <asm/linkage.h> | ||
|
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| #define SMALL 7 /* Must be at least 6 to deal with alignment/loop issues. */ | ||
|
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| ARC_ENTRY memset | ||
| mov_s r4,r0 | ||
| or r12,r0,r2 | ||
| bmsk.f r12,r12,1 | ||
| extb_s r1,r1 | ||
| asl r3,r1,8 | ||
| beq.d .Laligned | ||
| or_s r1,r1,r3 | ||
| brls r2,SMALL,.Ltiny | ||
| add r3,r2,r0 | ||
| stb r1,[r3,-1] | ||
| bclr_s r3,r3,0 | ||
| stw r1,[r3,-2] | ||
| bmsk.f r12,r0,1 | ||
| add_s r2,r2,r12 | ||
| sub.ne r2,r2,4 | ||
| stb.ab r1,[r4,1] | ||
| and r4,r4,-2 | ||
| stw.ab r1,[r4,2] | ||
| and r4,r4,-4 | ||
| .Laligned: ; This code address should be aligned for speed. | ||
| asl r3,r1,16 | ||
| lsr.f lp_count,r2,2 | ||
| or_s r1,r1,r3 | ||
| lpne .Loop_end | ||
| st.ab r1,[r4,4] | ||
| .Loop_end: | ||
| j_s [blink] | ||
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| .balign 4 | ||
| .Ltiny: | ||
| mov.f lp_count,r2 | ||
| lpne .Ltiny_end | ||
| stb.ab r1,[r4,1] | ||
| .Ltiny_end: | ||
| j_s [blink] | ||
| ARC_EXIT memset | ||
|
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| ; memzero: @r0 = mem, @r1 = size_t | ||
| ; memset: @r0 = mem, @r1 = char, @r2 = size_t | ||
|
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| ARC_ENTRY memzero | ||
| ; adjust bzero args to memset args | ||
| mov r2, r1 | ||
| mov r1, 0 | ||
| b memset ;tail call so need to tinker with blink | ||
| ARC_EXIT memzero |
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