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selftests/powerpc: Adjust wild_bctr to build with old binutils 

Currently the selftest wild_bctr can fail to build when an old gcc is
used, notably on gcc using a binutils version <= 2.27, because the
assembler does not support the integer suffix UL.

This patch adjusts the wild_bctr test so the REG_POISON value is still
treated as an unsigned long for the shifts on compilation but the UL
suffix is absent on the stringification, so the inline asm code
generated has no UL suffixes.

Signed-off-by: Gustavo Romero <gromero@linux.vnet.ibm.com>
[mpe: Wrap long line]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Gustavo Romero 2018-11-14 21:33:30 -05:00 committed by Michael Ellerman
parent 66f93c5a02
commit b2fed34a62
1 changed files with 3 additions and 2 deletions
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5
tools/testing/selftests/powerpc/mm/wild_bctr.c
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@ -47,8 +47,9 @@ static int ok(void)
return 0;
}
#define REG_POISON 0x5a5aUL
#define POISONED_REG(n) ((REG_POISON << 48) | ((n) << 32) | (REG_POISON << 16) | (n))
#define REG_POISON 0x5a5a
#define POISONED_REG(n) ((((unsigned long)REG_POISON) << 48) | ((n) << 32) | \
(((unsigned long)REG_POISON) << 16) | (n))
static inline void poison_regs(void)
{