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fix misinterpretation of indexed memory operand in i386 CFI generation

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a register used as an index in the memory destination of a mov
instruction was wrongly interpreted as the destination of the mov.
This commit is contained in:
Alex Dowad 2015-10-13 17:58:43 -04:00 committed by Rich Felker
parent fef9c801fe
commit 8cfdfa9c8f
1 changed files with 1 additions and 1 deletions
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2
tools/add-cfi.i386.awk
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@ -184,7 +184,7 @@ function trashed(register) {
} }
# this does NOT exhaustively check for all possible instructions which could # this does NOT exhaustively check for all possible instructions which could
# overwrite a register value inherited from the caller (just the common ones) # 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)$/ { trashed(get_reg2()) }
/(add|addl|sub|subl|and|or|xor|lea|sal|sar|shl|shr).*,%e(ax|bx|cx|dx|si|di|bp)$/ { /(add|addl|sub|subl|and|or|xor|lea|sal|sar|shl|shr).*,%e(ax|bx|cx|dx|si|di|bp)$/ {
trashed(get_reg2()) trashed(get_reg2())
} }