diff --git a/src/hotspot/os_cpu/linux_arm/os_linux_arm.cpp b/src/hotspot/os_cpu/linux_arm/os_linux_arm.cpp index 28b47877264..f4196d89fe3 100644 --- a/src/hotspot/os_cpu/linux_arm/os_linux_arm.cpp +++ b/src/hotspot/os_cpu/linux_arm/os_linux_arm.cpp @@ -209,8 +209,16 @@ frame os::fetch_compiled_frame_from_context(const void* ucVoid) { } intptr_t* os::fetch_bcp_from_context(const void* ucVoid) { - Unimplemented(); - return nullptr; + assert(ucVoid != nullptr, "invariant"); + const ucontext_t* uc = (const ucontext_t*)ucVoid; + assert(os::Posix::ucontext_is_interpreter(uc), "invariant"); +#if (FP_REG_NUM == 11) + assert(Rbcp == R7, "expected FP=R11, Rbcp=R7"); + return (intptr_t*)uc->uc_mcontext.arm_r7; +#else + assert(Rbcp == R11, "expected FP=R7, Rbcp=R11"); + return (intptr_t*)uc->uc_mcontext.arm_fp; // r11 +#endif } frame os::get_sender_for_C_frame(frame* fr) {