From: nickc Date: Fri, 20 Nov 2009 21:54:28 +0000 (+0000) Subject: * libc/machine/rx/strncat.S (_strncat): Replace use of r6 X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=ee96c634f94fea7fdb7e089dd08e85ba81012bda;p=pf3gnuchains%2Fpf3gnuchains3x.git * libc/machine/rx/strncat.S (_strncat): Replace use of r6 (call-saved) with r14 (call-used). --- diff --git a/newlib/ChangeLog b/newlib/ChangeLog index e0eace851b..72ca21653a 100644 --- a/newlib/ChangeLog +++ b/newlib/ChangeLog @@ -1,3 +1,8 @@ +2009-11-20 Nick Clifton + + * libc/machine/rx/strncat.S (_strncat): Replace use of r6 + (call-saved) with r14 (call-used). + 2009-11-18 Dave Korn * libm/machine/i386/f_tan.S (_f_tan): Free fp stack register diff --git a/newlib/libc/machine/rx/strncat.S b/newlib/libc/machine/rx/strncat.S index 7a0afce31b..3bc6b75aeb 100644 --- a/newlib/libc/machine/rx/strncat.S +++ b/newlib/libc/machine/rx/strncat.S @@ -10,25 +10,25 @@ _strncat: mov r1, r4 ; Save a copy of the dest pointer. mov r2, r5 ; Save a copy of the source pointer. - mov r3, r6 ; Save a copy of the byte count. + mov r3, r14 ; Save a copy of the byte count. mov #0, r2 ; Search for the NUL byte. mov #-1, r3 ; Search until we run out of memory. suntil.b ; Find the end of the destination string. sub #1, r1 ; suntil.b leaves r1 pointing to the byte beyond the NUL. - mov r6, r3 ; Restore the limit on the number of bytes copied. + mov r14, r3 ; Restore the limit on the number of bytes copied. mov r5, r2 ; Restore the source pointer. mov r1, r5 ; Save a copy of the dest pointer. smovu ; Copy source to destination. - add #0, r6, r3 ; Restore the number of bytes to copy (again), but this time set the Z flag as well. + add #0, r14, r3 ; Restore the number of bytes to copy (again), but this time set the Z flag as well. beq 1f ; If we copied 0 bytes then we already know that the dest string is NUL terminated, so we do not have to do anything. mov #0, r2 ; Otherwise we must check to see if a NUL byte mov r5, r1 ; was included in the bytes that were copied. suntil.b beq 1f ; Z flag is set if a match was found. - add r6, r5 ; Point at byte after end of copied bytes. + add r14, r5 ; Point at byte after end of copied bytes. mov.b #0, [r5] ; Store a NUL there. 1: mov r4, r1 ; Return the original dest pointer.