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| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2023-05-11 01:02:12 +0200 |
|---|---|---|
| committer | Thomas Huth <thuth@redhat.com> | 2023-06-05 07:27:23 +0200 |
| commit | 01b9990a3fb84bb9a14017255ab1a4fa86588215 (patch) | |
| tree | 327ec7a187145f2b748eccbd6e46cf8c5dcb2211 /linux-user | |
| parent | 230976232f4fcdc205d6ec53ec9f3804b28dc1e7 (diff) | |
| download | qemu-01b9990a3fb84bb9a14017255ab1a4fa86588215.zip qemu-01b9990a3fb84bb9a14017255ab1a4fa86588215.tar.gz qemu-01b9990a3fb84bb9a14017255ab1a4fa86588215.tar.bz2 | |
linux-user/s390x: Fix single-stepping SVC
Currently single-stepping SVC executes two instructions. The reason is
that EXCP_DEBUG for the SVC instruction itself is masked by EXCP_SVC.
Fix by re-raising EXCP_DEBUG.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230510230213.330134-2-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/s390x/cpu_loop.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/linux-user/s390x/cpu_loop.c b/linux-user/s390x/cpu_loop.c index 285bc60..8b7ac28 100644 --- a/linux-user/s390x/cpu_loop.c +++ b/linux-user/s390x/cpu_loop.c @@ -86,6 +86,15 @@ void cpu_loop(CPUS390XState *env) } else if (ret != -QEMU_ESIGRETURN) { env->regs[2] = ret; } + + if (unlikely(cs->singlestep_enabled)) { + /* + * cpu_tb_exec() did not raise EXCP_DEBUG, because it has seen + * that EXCP_SVC was already pending. + */ + cs->exception_index = EXCP_DEBUG; + } + break; case EXCP_DEBUG: |