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Message-Id: <1443780123-6493-2-git-send-email-alexinbeijing@gmail.com>
Date: Fri, 2 Oct 2015 12:02:02 +0200
From: Alex Dowad <alexinbeijing@...il.com>
To: musl@...ts.openwall.com
Subject: [PATCH 2/3] When generating CFI for i386 asm, don't mistake an FDIV instruction for DIV
...that would cause the script to erroneously conclude that the values of EAX
and EDX have been overwritten.
Probably won't make a difference, but it's just as well to get it right...
---
tools/add-cfi.i386.awk | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/add-cfi.i386.awk b/tools/add-cfi.i386.awk
index b8bdd7f..2da1899 100644
--- a/tools/add-cfi.i386.awk
+++ b/tools/add-cfi.i386.awk
@@ -190,7 +190,7 @@ function trashed(register) {
}
/i?mul [^,]*$/ { trashed("eax"); trashed("edx") }
/i?mul %e(ax|bx|cx|dx|si|di|bp),/ { trashed(get_reg1()) }
-/i?div/ { trashed("eax"); trashed("edx") }
+/^i?div/ { trashed("eax"); trashed("edx") }
/(dec|inc|not|neg|pop) %e(ax|bx|cx|dx|si|di|bp)/ { trashed(get_reg()) }
/cpuid/ { trashed("eax"); trashed("ebx"); trashed("ecx"); trashed("edx") }
--
2.0.0.GIT
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