From 78b7adbaea643f2f213bb113e3ec933416a769a8 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Tue, 25 Oct 2016 15:54:16 +0000 Subject: [PATCH] Fix cmpli usage in power6 memset. Building glibc for powerpc64 with recent (2.27.51.20161012) binutils, with multi-arch enabled, I get the error: ../sysdeps/powerpc/powerpc64/power6/memset.S: Assembler messages: ../sysdeps/powerpc/powerpc64/power6/memset.S:254: Error: operand out of range (5 is not between 0 and 1) ../sysdeps/powerpc/powerpc64/power6/memset.S:254: Error: operand out of range (128 is not between 0 and 31) ../sysdeps/powerpc/powerpc64/power6/memset.S:254: Error: missing operand Indeed, cmpli is documented as a four-operand instruction, and looking at nearby code it seems likely cmpldi was intended. This patch fixes this powerpc64 code accordingly, and makes a corresponding change to the powerpc32 code. Tested for powerpc, powerpc64 and powerpc64le by Tulio Magno Quites Machado Filho * sysdeps/powerpc/powerpc32/power6/memset.S (memset): Use cmplwi instead of cmpli. * sysdeps/powerpc/powerpc64/power6/memset.S (memset): Use cmpldi instead of cmpli. --- sysdeps/powerpc/powerpc32/power6/memset.S | 2 +- sysdeps/powerpc/powerpc64/power6/memset.S | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) --- a/sysdeps/powerpc/powerpc32/power6/memset.S +++ b/sysdeps/powerpc/powerpc32/power6/memset.S @@ -394,7 +394,7 @@ /* A simple loop for the longer (>640 bytes) lengths. This form limits the branch miss-predicted to exactly 1 at loop exit.*/ L(cacheAligned512): - cmpli cr1,rLEN,128 + cmplwi cr1,rLEN,128 blt cr1,L(cacheAligned1) dcbz 0,rMEMP addi rLEN,rLEN,-128 --- a/sysdeps/powerpc/powerpc64/power6/memset.S +++ b/sysdeps/powerpc/powerpc64/power6/memset.S @@ -251,7 +251,7 @@ /* A simple loop for the longer (>640 bytes) lengths. This form limits the branch miss-predicted to exactly 1 at loop exit.*/ L(cacheAligned512): - cmpli cr1,rLEN,128 + cmpldi cr1,rLEN,128 blt cr1,L(cacheAligned1) dcbz 0,rMEMP addi rLEN,rLEN,-128