Skip to content

Fix flag-register read in fiber-savecontext on arm64 #84

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
vadimskipin merged 1 commit into from
Jun 20, 2026
+3 −2
Merged

Fix flag-register read in fiber-savecontext on arm64 #84

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 3 additions & 2 deletions src/gdb/fiber.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -442,8 +442,9 @@ def _get_reg(name):
return int(value)
except gdb.error:
# Flag registers (x86 eflags, arm64 pstate) are TYPE_CODE_FLAGS, which
# int() rejects; the C-cast evaluator coerces them to an integer.
return int(gdb.parse_and_eval(f"(unsigned long)${name}"))
# int() rejects and a C-cast coerces only on some targets (it raises
# "Invalid cast" for arm64 pstate). Read the raw register bytes instead.
return int.from_bytes(value.bytes, "little")


def _set_reg(name, value):
Expand Down
Loading