As no '.type' was set for save_boot_params_ret in start.S, binutils did not track whether it was emitted as A32 or T32. By properly marking save_boot_params_ret as a potential function entry, we can make sure that the compiler will insert the appropriate instructions for branching to save_boot_params_ret both for call-sites emitted as A32 and T32.
Reported-by: Andy Yan andy.yan@rock-chips.com Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com Tested-by: Andy Yan andy.yan@rock-chips.com
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Changes in v3: - tracked the root-cause why no interwork branch was emitted and fixed it using a '.type'-directive in start.S to mark save_boot_params_ret as a (possible) function-entry.
Changes in v2: None
arch/arm/cpu/armv7/start.S | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S index 7b84a7a..95a0b52 100644 --- a/arch/arm/cpu/armv7/start.S +++ b/arch/arm/cpu/armv7/start.S @@ -31,6 +31,7 @@
.globl reset .globl save_boot_params_ret + .type save_boot_params_ret,%function #ifdef CONFIG_ARMV7_LPAE .global switch_to_hypervisor_ret #endif