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awk support scripts to generate trampolines in modules.

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(adapted from previous LKM method).
<machine/asm.h> now has a KMODTRAMPOLINE macro to generate the trampoline
This commit is contained in:
matt 2013-08-07 17:06:22 +00:00
parent f3344e2765
commit 1e205987d1
3 changed files with 33 additions and 0 deletions
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5
sys/modules/arch/arm/kmodhide.awk Normal file
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# $NetBSD: kmodhide.awk,v 1.1 2013/08/07 17:06:22 matt Exp $
substr($NF, 1, 7) == "__wrap_" {
print " --localize-symbol "$NF;
}

18
sys/modules/arch/arm/kmodtramp.awk Normal file
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# $NetBSD: kmodtramp.awk,v 1.1 2013/08/07 17:06:22 matt Exp $
#
BEGIN {
print "#include <machine/asm.h>"
}
$2 == "R_ARM_PC24" || $2 == "R_ARM_CALL" || $2 == "R_ARM_JUMP24" {
if (x[$3] != "")
next;
if (index($3, ".text") > 0)
next;
fn=$3
sub("__wrap_", "", fn)
if (fn == $3)
next;
print "KMODTRAMPOLINE("fn")"
x[$3]=".";
}

10
sys/modules/arch/arm/kmodwrap.awk Normal file
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# $NetBSD: kmodwrap.awk,v 1.1 2013/08/07 17:06:22 matt Exp $
$2 == "R_ARM_PC24" || $2 == "R_ARM_CALL" || $2 == "R_ARM_JUMP24" {
if (x[$3] != "")
next;
if (index($3, ".text") > 0)
next
printf " --wrap="$3;
x[$3]=".";
}