While new compilers like
s390x-linux-gnu-gcc (GCC) 7.2.1 20170915 (Red Hat Cross 7.2.1-1)
Complain, that R1 is missing, old compilers like
gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-16)
will complain that R1 is not valid.
According to the architecture, R1 is valid but ignored. No idea why this
was changed (in a way that programs no longer compile).
Anyhow, let's just specify the instruction explicitly.
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
---
s390x/intercept.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/s390x/intercept.c b/s390x/intercept.c
index 59e5fca..99dde0d 100644
--- a/s390x/intercept.c
+++ b/s390x/intercept.c
@@ -139,7 +139,7 @@ static void test_testblock(void)
asm volatile (
" lghi %%r0,0\n"
- " tb %1\n"
+ " .insn rre,0xb22c0000,0,%1\n"
" ipm %0\n"
" srl %0,28\n"
: "=d" (cc)
@@ -150,12 +150,12 @@ static void test_testblock(void)
expect_pgm_int();
low_prot_enable();
- asm volatile (" tb %0 " : : "r"(4096));
+ asm volatile (" .insn rre,0xb22c0000,0,%0\n" : : "r"(4096));
low_prot_disable();
check_pgm_int_code(PGM_INT_CODE_PROTECTION);
expect_pgm_int();
- asm volatile (" tb %0 " : : "r"(-4096));
+ asm volatile (" .insn rre,0xb22c0000,0,%0\n" : : "r"(-4096));
check_pgm_int_code(PGM_INT_CODE_ADDRESSING);
}
--
2.14.3
