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Re: Has the dynamic section to be read-write?
- To: "GNU C. library Alpha Tester List" <libc-alpha at sourceware dot cygnus dot com>
- Subject: Re: Has the dynamic section to be read-write?
- From: Andreas Jaeger <aj at suse dot de>
- Date: 24 Nov 1999 15:14:40 +0100
- Cc: "Maciej W. Rozycki" <macro at ds2 dot pg dot gda dot pl>, Florian Lohoff <flo at rfc822 dot org>
- References: <u8emdhhdcs.fsf@gromit.rhein-neckar.de>
Here's a suggested patch for elf/link.h to implement the changed data
structure. Is this ok? Please send me your critizisms so that I can
change this and finally send a patch for the complete dynamic linker.
Andreas
============================================================
Index: elf/link.h
--- elf/link.h 1999/09/13 09:05:38 1.69
+++ elf/link.h 1999/11/24 14:12:17
@@ -110,6 +110,28 @@
This data structure might change in future, if necessary. User-level
programs must avoid defining objects of this type. */
+/* Copy of dynamic section entry for use in dynamic linker. */
+
+typedef struct
+{
+ int valid; /* Entry is valid. */
+ union
+ {
+ Elf32_Word d_val; /* Integer value */
+ Elf32_Addr d_ptr; /* Address value */
+ } d_un;
+} Elf32_Dyn_rtld;
+
+typedef struct
+{
+ int valid; /* Entry is valid. */
+ union
+ {
+ Elf64_Xword d_val; /* Integer value */
+ Elf64_Addr d_ptr; /* Address value */
+ } d_un;
+} Elf64_Dyn_rtld;
+
struct link_map
{
/* These first few members are part of the protocol with the debugger.
@@ -133,7 +155,7 @@
DT_NUM+DT_PROCNUM+DT_VERSIONTAGNUM+DT_EXTRANUM)
are indexed by DT_EXTRATAGIDX(tagvalue) (see <elf.h>). */
- ElfW(Dyn) *l_info[DT_NUM + DT_PROCNUM + DT_VERSIONTAGNUM + DT_EXTRANUM];
+ ElfW(Dyn_rtld) l_info[DT_NUM + DT_PROCNUM + DT_VERSIONTAGNUM + DT_EXTRANUM];
const ElfW(Phdr) *l_phdr; /* Pointer to program header table in core. */
ElfW(Addr) l_entry; /* Entry point location. */
ElfW(Half) l_phnum; /* Number of program header entries. */
--
Andreas Jaeger
SuSE Labs aj@suse.de
private aj@arthur.rhein-neckar.de