Source-Changes-HG archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
[src/trunk]: src/include Refine the documentation of r_debug
details: https://anonhg.NetBSD.org/src/rev/d20213069468
branches: trunk
changeset: 944143:d20213069468
user: kamil <kamil%NetBSD.org@localhost>
date: Mon Sep 21 02:20:27 2020 +0000
description:
Refine the documentation of r_debug
Obtained from OpenBSD link.h r.1.15.
diffstat:
include/link_elf.h | 20 +++++++++++++++++---
1 files changed, 17 insertions(+), 3 deletions(-)
diffs (39 lines):
diff -r 354f6fa7465e -r d20213069468 include/link_elf.h
--- a/include/link_elf.h Sun Sep 20 23:48:09 2020 +0000
+++ b/include/link_elf.h Mon Sep 21 02:20:27 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: link_elf.h,v 1.10 2010/10/16 10:27:06 skrll Exp $ */
+/* $NetBSD: link_elf.h,v 1.11 2020/09/21 02:20:27 kamil Exp $ */
#ifndef _LINK_ELF_H_
#define _LINK_ELF_H_
@@ -18,13 +18,27 @@
} Link_map;
/*
- * This only exists for GDB.
+ * Debug rendezvous struct. Pointer to this is set up in the
+ * target code pointed by the DT_DEBUG tag. If it is
+ * defined.
*/
struct r_debug {
- int r_version; /* not used */
+ int r_version; /* protocol version */
struct link_map *r_map; /* list of loaded images */
+
+ /*
+ * This is the address of a function internal to the run-time linker,
+ * that will always be called when the linker begins to map in a
+ * library or unmap it, and again when the mapping change is complete.
+ * The debugger can set a breakpoint at this address if it wants to
+ * notice shared object mapping changes.
+ */
void (*r_brk)(void); /* pointer to break point */
enum {
+ /*
+ * This state value describes the mapping change taking place
+ * when the `r_brk' address is called.
+ */
RT_CONSISTENT, /* things are stable */
RT_ADD, /* adding a shared library */
RT_DELETE /* removing a shared library */
Home |
Main Index |
Thread Index |
Old Index