Last change
on this file since 444 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
|
File size:
462 bytes
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Rev | Line | |
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[444] | 1 | .file "strcpy.S" |
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| 2 | |
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| 3 | .section .text |
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| 4 | .global _strcpy |
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| 5 | .type _strcpy,@function |
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| 6 | _strcpy: |
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| 7 | ;; R1: dest |
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| 8 | ;; R2: source |
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| 9 | #ifdef __RX_DISALLOW_STRING_INSNS__ |
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| 10 | mov r1, r4 ; Leave the destination address unchanged in the result register. |
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| 11 | |
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| 12 | 1: mov.b [r2+], r5 |
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| 13 | mov.b r5, [r4+] |
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| 14 | cmp #0, r5 |
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| 15 | bne 1b |
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| 16 | |
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| 17 | rts |
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| 18 | #else |
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| 19 | mov r1, r4 |
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| 20 | mov #-1, r3 ; Strictly speaking this is incorrect, but I doubt if anyone will ever know. |
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| 21 | smovu |
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| 22 | mov r4, r1 |
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| 23 | rts |
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| 24 | #endif |
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| 25 | .size _strcpy, . - _strcpy |
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