diff options
Diffstat (limited to 'gitlab/issues_text/target_riscv/host_missing/accel_TCG/1224')
| -rw-r--r-- | gitlab/issues_text/target_riscv/host_missing/accel_TCG/1224 | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gitlab/issues_text/target_riscv/host_missing/accel_TCG/1224 b/gitlab/issues_text/target_riscv/host_missing/accel_TCG/1224 new file mode 100644 index 000000000..960dc2e9c --- /dev/null +++ b/gitlab/issues_text/target_riscv/host_missing/accel_TCG/1224 @@ -0,0 +1,10 @@ +QEMU crashes with failed assertion when executing compressed instructions with C extension support disabled +Description of problem: +When executing compressed instructions with compressed instruction support disabled (c=off), the tcg riscv translations fails an assertion. +``` +qemu-system-riscv64: qemu/accel/tcg/translate-all.c:1449: tb_gen_code: Assertion `tb->size != 0' failed. +``` + +I believe that the issue is caused due to the fact that the compressed instruction without RVC support branch of the `decode_opc` function does not update `ctx->pc_succ_insn`, which causes `ctx->base.pc_next` to not be updated in `riscv_tr_translate_insn`, which then finally triggers the assertion once the tcg generation returns to `tb_gen_code`. + +Side note, it also seems like the `gen_exception_illegal` call in the same if case is not needed, since we also call it again at the end of the function. |