From: Stacey Son <s...@freebsd.org>
Initializes thread's register state
Signed-off-by: Stacey Son <s...@freebsd.org>
Signed-off-by: Ajeet Singh <itac...@freebsd.org>
Co-authored-by: Jessica Clarke <jrt...@jrtc27.com>
---
bsd-user/aarch64/target_arch_thread.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/bsd-user/aarch64/target_arch_thread.h
b/bsd-user/aarch64/target_arch_thread.h
index d2f2dea7ce..bfc9050cb1 100644
--- a/bsd-user/aarch64/target_arch_thread.h
+++ b/bsd-user/aarch64/target_arch_thread.h
@@ -42,4 +42,20 @@ static inline void target_thread_set_upcall(CPUARMState
*regs, abi_ulong entry,
pstate_write(regs, PSTATE_MODE_EL0t);
}
+static inline void target_thread_init(struct target_pt_regs *regs,
+ struct image_info *infop)
+{
+ abi_long stack = infop->start_stack;
+
+ /*
+ * Make sure the stack is properly aligned.
+ * arm64/include/param.h (STACKLIGN() macro)
+ */
+
+ memset(regs, 0, sizeof(*regs));
+ regs->regs[0] = infop->start_stack;
+ regs->pc = infop->entry;
+ regs->sp = stack & ~(16 - 1);
+}
+
#endif /* TARGET_ARCH_THREAD_H */
--
2.34.1
