[PATCH v1] ARM: rust: Generate unwind tables for Rust code with ARM_UNWIND

[FUJITA Tomonori]

From: FUJITA Tomonori <fujita.tomonori at gmail.com>

When CONFIG_ARM_UNWIND=y, C code is built with -funwind-tables, but
Rust code is built with -Cforce-unwind-tables=n. As a result, the
unwinder stops at the first Rust frame.

Pass -Cforce-unwind-tables=y to rustc in that case, as arm64 does.

Fixes: ccb8ce526807 ("ARM: 9441/1: rust: Enable Rust support for ARMv7")
Assisted-by: LLM
Signed-off-by: FUJITA Tomonori <fujita.tomonori at gmail.com>
---
 arch/arm/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 573813ef5e77..d59b8daf4f4e 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -117,6 +117,7 @@ endif
 
 ifeq ($(CONFIG_ARM_UNWIND),y)
 CFLAGS_ABI	+=-funwind-tables
+KBUILD_RUSTFLAGS += -Cforce-unwind-tables=y
 endif
 
 ifeq ($(CONFIG_CC_IS_CLANG),y)

base-commit: a90ee4305c4a5df72c11b31dacfdc76e00fcf78a
-- 
2.43.0