diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2020-01-16 15:46:38 -1000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2020-01-27 10:49:51 -0800 |
| commit | b1af755c33bf0d690553a5ccd93689dfd15a98e8 (patch) | |
| tree | 80c91a18bf947821d1d6dbeb04fab63942a45ce2 /target/hppa/op_helper.c | |
| parent | 4debfdac03babcf858fb45204157a05236635a21 (diff) | |
target/hppa: Allow, but diagnose, LDCW aligned only mod 4
The PA-RISC 1.1 specification says that LDCW must be aligned mod 16
or the operation is undefined. However, real hardware only generates
an unaligned access trap for unaligned mod 4.
Match real hardware, but diagnose with GUEST_ERROR a violation of
the specification.
At the same time fix a bug in the initialization of mop, where the
size was specified twice, and another to free the zero temporary.
Tested-by: Helge Deller <deller@gmx.de>
Reported-by: Helge Deller <deller@gmx.de>
Suggested-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target/hppa/op_helper.c')
| -rw-r--r-- | target/hppa/op_helper.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/target/hppa/op_helper.c b/target/hppa/op_helper.c index f0516e81f1..7823706e9c 100644 --- a/target/hppa/op_helper.c +++ b/target/hppa/op_helper.c @@ -153,6 +153,15 @@ void HELPER(stby_e_parallel)(CPUHPPAState *env, target_ulong addr, do_stby_e(env, addr, val, true, GETPC()); } +void HELPER(ldc_check)(target_ulong addr) +{ + if (unlikely(addr & 0xf)) { + qemu_log_mask(LOG_GUEST_ERROR, + "Undefined ldc to unaligned address mod 16: " + TARGET_FMT_lx "\n", addr); + } +} + target_ureg HELPER(probe)(CPUHPPAState *env, target_ulong addr, uint32_t level, uint32_t want) { |