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jump_label: move 'asm goto' support test to Kconfig

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Currently, CONFIG_JUMP_LABEL just means "I _want_ to use jump label".

The jump label is controlled by HAVE_JUMP_LABEL, which is defined
like this:

  #if defined(CC_HAVE_ASM_GOTO) && defined(CONFIG_JUMP_LABEL)
  # define HAVE_JUMP_LABEL
  #endif

We can improve this by testing 'asm goto' support in Kconfig, then
make JUMP_LABEL depend on CC_HAS_ASM_GOTO.

Ugly #ifdef HAVE_JUMP_LABEL will go away, and CONFIG_JUMP_LABEL will
match to the real kernel capability.

Signed-off-by: Masahiro Yamada <[email protected]>
Acked-by: Michael Ellerman <[email protected]> (powerpc)
Tested-by: Sedat Dilek <[email protected]>
This commit is contained in:
Masahiro Yamada 2018-12-31 00:14:15 +09:00
commit e9666d10a5
42 changed files with 65 additions and 119 deletions
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2
scripts/gcc-goto.sh
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@ -3,7 +3,7 @@
# Test for gcc 'asm goto' support
# Copyright (C) 2010, Jason Baron <[email protected]>
cat << "END" | $@ -x c - -c -o /dev/null >/dev/null 2>&1 && echo "y"
cat << "END" | $@ -x c - -fno-PIE -c -o /dev/null
int main(void)
{
#if defined(__arm__) || defined(__aarch64__)