[PATCH] gdb-script: updated lx_current for riscv

debug
2022-11-11T19:59:58Z

From: Deepak Gupta <debug@rivosinc.com>

lx_current python gdb command defined in scripts/gdb/cpus.py updated
to support riscv architecture.

Signed-off-by: Deepak Gupta <debug@rivosinc.com>
---
scripts/gdb/linux/cpus.py | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/scripts/gdb/linux/cpus.py b/scripts/gdb/linux/cpus.py
index 15fc4626d236..ce6703f1e35a 100644
--- a/scripts/gdb/linux/cpus.py
+++ b/scripts/gdb/linux/cpus.py
@@ -173,6 +173,14 @@ def get_current_task(cpu):
else:
raise gdb.GdbError("Sorry, obtaining the current task is not allowed "
"while running in userspace(EL0)")
+ elif utils.is_target_arch("riscv"):
+ current_task_addr = gdb.parse_and_eval("$tp")
+ if((current_task_addr.cast(utils.get_long_type()) >> 63) != 0):
+ current_task = current_task_addr.cast(task_ptr_type)
+ return current_task.dereference()
+ else:
+ raise gdb.GdbError("Sorry, obtaining the current task is not allowed "
+ "while running in userspace")
else:
raise gdb.GdbError("Sorry, obtaining the current task is not yet "
"supported with this arch")
--
2.25.1