From: Alex Dowad <alexinbeijing@gmail.com>
Date: Tue, 13 Oct 2015 21:58:43 +0000 (-0400)
Subject: fix misinterpretation of indexed memory operand in i386 CFI generation
X-Git-Tag: v1.1.12~14
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=8cfdfa9c8fd84d4090bba54eb616a2c9361a076f;p=oweals%2Fmusl.git

fix misinterpretation of indexed memory operand in i386 CFI generation

a register used as an index in the memory destination of a mov
instruction was wrongly interpreted as the destination of the mov.
---

diff --git a/tools/add-cfi.i386.awk b/tools/add-cfi.i386.awk
index 231d67ed..bd7932f1 100644
--- a/tools/add-cfi.i386.awk
+++ b/tools/add-cfi.i386.awk
@@ -184,7 +184,7 @@ function trashed(register) {
 }
 # this does NOT exhaustively check for all possible instructions which could
 # overwrite a register value inherited from the caller (just the common ones)
-/mov.*,%e(ax|bx|cx|dx|si|di|bp)/  { trashed(get_reg2()) }
+/mov.*,%e(ax|bx|cx|dx|si|di|bp)$/  { trashed(get_reg2()) }
 /(add|addl|sub|subl|and|or|xor|lea|sal|sar|shl|shr).*,%e(ax|bx|cx|dx|si|di|bp)$/ {
   trashed(get_reg2())
 }