diff options
| -rw-r--r-- | Rules.mak | 1 | ||||
| -rwxr-xr-x | test/plt/check-plt.sh | 38 |
2 files changed, 39 insertions, 0 deletions
@@ -46,6 +46,7 @@ CC = $(CROSS)gcc AR = $(CROSS)ar LD = $(CROSS)ld NM = $(CROSS)nm +OBJDUMP = $(CROSS)objdump STRIPTOOL = $(CROSS)strip INSTALL = install diff --git a/test/plt/check-plt.sh b/test/plt/check-plt.sh new file mode 100755 index 000000000..bedc8fd35 --- /dev/null +++ b/test/plt/check-plt.sh @@ -0,0 +1,38 @@ +#!/bin/sh +allowed=" +calloc +free +malloc +memalign +realloc +" + +${OBJDUMP:-objdump} -d ${top_builddir:-../..}/lib/libc.so.? | \ +gawk -v allowed="${allowed}" ' +BEGIN { + COUNT = split(" " allowed, ALLOWED); +} + +# Strip away the noise. The name will be like: +# <brk>: +# <foo@plt> +function symstrip(name) { + return gensub(/.*<([^>@]*).*/, "\\1", "", name); +} + +{ +# Match the start of the symbol disassembly +# 00009720 <brk>: +if ($2 ~ />:$/) { + f = symstrip($2); + +} else if ($NF ~ /@plt>/) { + rf = symstrip($NF); + for (a in ALLOWED) { + a = ALLOWED[a]; + if (a == rf) + next; + } + print "Func " f " references " rf; +} +}' | sort -u |