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* [newlib-cygwin] [arm] Fix strcpy for unified syntax on ARMv4t thumb.
@ 2017-07-21 10:23 Richard Earnshaw
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From: Richard Earnshaw @ 2017-07-21 10:23 UTC (permalink / raw)
To: newlib-cvs
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=d6cac3e1da1a117f8a93b91371f3f0a5c071219f
commit d6cac3e1da1a117f8a93b91371f3f0a5c071219f
Author: Richard Earnshaw <Richard.Earnshaw@arm.com>
Date: Fri Jul 21 11:22:25 2017 +0100
[arm] Fix strcpy for unified syntax on ARMv4t thumb.
ARMv4t does not support mov between two low registers. Now we use
unified syntax mov instructions need converting to movs.
Diff:
---
newlib/libc/machine/arm/strcpy.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/newlib/libc/machine/arm/strcpy.c b/newlib/libc/machine/arm/strcpy.c
index 1544511..111528e 100644
--- a/newlib/libc/machine/arm/strcpy.c
+++ b/newlib/libc/machine/arm/strcpy.c
@@ -160,7 +160,7 @@ strcpy (char* dst, const char* src)
"bne 1b\n\t"
"bx lr\n\t"
#else
- "mov r3, r0\n\t"
+ "movs r3, r0\n\t"
"1:\n\t"
"ldrb r2, [r1]\n\t"
"adds r1, #1\n\t"
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2017-07-21 10:23 [newlib-cygwin] [arm] Fix strcpy for unified syntax on ARMv4t thumb Richard Earnshaw
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