id = 2672
title = "Skipping a jal instruction in riscv64 baremetal emulation"
state = "closed"
created_at = "2024-11-13T10:22:34.551Z"
closed_at = "2024-11-16T22:05:19.664Z"
labels = ["Closed::Invalid", "target: riscv"]
url = "https://gitlab.com/qemu-project/qemu/-/issues/2672"
host-os = "openSUSE Leap 15.5"
host-arch = "x86_64, Intel(R) Core(TM) i5-10400T CPU @ 2.00GHz"
qemu-version = "QEMU emulator version 9.0.50"
guest-os = "baremetal"
guest-arch = "riscv64"
description = """The binary contains an illegal instruction after a jal. Normally the jal should be taken but the illegal instructi[aia_tests2.elf](/uploads/b8b646b01d7bcc15b51c36ddbffacac7/aia_tests2.elf)on next to the jal is executed generating and illegal instruction exception:

```
0x80006070:  00200513          addi                    a0,zero,2
0x80006074:  89cff0ef          jal                     ra,-3940                # 0x80005110

----------------
IN: _Z15int_switch_modehh
0x80006078:  0000              illegal                 

----------------
IN: mtvec_table
0x8000e600:  64d0406f          j                       20044                   # 0x8001344c
```"""
reproduce = """1. Execute the same binary with QEMU."""
additional = """"""