Rev 8793 | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
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| 1 | /* strcpy( char *, const char * ) |
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| 2 | - | ||
| 3 | This file is part of the Public Domain C Library (PDCLib). |
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| 4 | Permission is granted to use, modify, and / or redistribute at will. |
1 | /* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */ |
| 5 | */ |
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| 6 | - | ||
| 7 | #include |
2 | #include |
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| 8 | 3 | ||
| 9 | char * strcpy( char * s1, const char * s2 ) |
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| 10 | { |
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| 11 | char * rc = s1; |
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| 12 | - | ||
| 13 | while ( ( *s1++ = *s2++ ) ) |
4 | char* strcpy(char* to, const char* from) |
| - | 5 | { |
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| - | 6 | int d0, d1, d2; |
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| - | 7 | __asm__ __volatile__( |
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| 14 | { |
8 | "1:\tlodsb\n\t" |
| - | 9 | "stosb\n\t" |
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| 15 | /* EMPTY */ |
10 | "testb %%al,%%al\n\t" |
| 16 | } |
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| - | 11 | "jne 1b" |
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| - | 12 | : "=&S"(d0), "=&D"(d1), "=&a"(d2) |
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| - | 13 | : "0"(from), "1"(to) |
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| 17 | 14 | : "memory"); |
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| 18 | return rc; |
15 | return to; |
| 19 | } |
16 | } |