Delete unneeded StackFrame::object_base

Author: philipc

unwind/src/find_cfi/baremetal.rs

@@ -25,7 +25,6 @@ pub fn find_cfi_sections() -> Vec<EhRef> {
         let eh_frame_end = &__ehframe_end as *const _ as u64;
 
         cfi.push(EhRef {
-            obj_base: 0,
             text,
             eh_frame_hdr,
             eh_frame_end,

unwind/src/find_cfi/ld.rs

@@ -66,7 +66,6 @@ extern "C" fn callback(info: *const DlPhdrInfo, size: usize, data: *mut c_void)
                 // This is an upper bound, not the exact address.
                 let eh_frame_end = (*info).addr + max_vaddr;
                 (*data).push(EhRef {
-                    obj_base: (*info).addr,
                     text: AddrRange { start: start_addr, end: start_addr + text.memsz },
                     eh_frame_hdr: AddrRange { start: eh_frame_hdr_start, end: eh_frame_hdr_start + eh_frame_hdr.memsz },
                     eh_frame_end,

unwind/src/find_cfi/mod.rs

@@ -2,7 +2,6 @@ use range::AddrRange;
 
 #[derive(Debug)]
 pub struct EhRef {
-    pub obj_base: u64,
     pub text: AddrRange,
     pub eh_frame_hdr: AddrRange,
     pub eh_frame_end: u64,

unwind/src/lib.rs

@@ -28,7 +28,6 @@ pub struct StackFrame {
     personality: Option<u64>,
     lsda: Option<u64>,
     initial_address: u64,
-    pub object_base: u64, // FIXME hack, remove this
 }
 
 pub trait Unwinder: Default {
@@ -213,7 +212,6 @@ impl<'a> FallibleIterator for StackFrames<'a> {
             self.state = Some((row, cfa));
 
             Ok(Some(StackFrame {
-                object_base: rec.er.obj_base,
                 personality: personality.map(|x| unsafe { deref_ptr(x) }),
                 lsda: lsda.map(|x| unsafe { deref_ptr(x) }),
                 initial_address,