aboutsummaryrefslogtreecommitdiff
path: root/gdb/i386-linux-nat.c
diff options
context:
space:
mode:
authorMichael Snyder <msnyder@vmware.com>2000-08-29 23:31:10 +0000
committerMichael Snyder <msnyder@vmware.com>2000-08-29 23:31:10 +0000
commitbafda96e6e2bc73cee9ffa61d893c96a592b92b5 (patch)
treef13f8ea0eeb874dc829f825f4aadcf088a4c351d /gdb/i386-linux-nat.c
parent184651e316776835122a25af307c2e1576d30a88 (diff)
downloadgdb-bafda96e6e2bc73cee9ffa61d893c96a592b92b5.zip
gdb-bafda96e6e2bc73cee9ffa61d893c96a592b92b5.tar.gz
gdb-bafda96e6e2bc73cee9ffa61d893c96a592b92b5.tar.bz2
2000-08-29 Michael Snyder <msnyder@cleaver.cygnus.com>
* i386-linux-nat.c (i386_linux_skip_solib_resolver, skip_hurd_resolver, find_minsym_and_objfile): Move these solib functions into i386-linux-tdep.c for cross debugging. * i386-linux-tdep.c: Receive the above functions.
Diffstat (limited to 'gdb/i386-linux-nat.c')
-rw-r--r--gdb/i386-linux-nat.c97
1 files changed, 0 insertions, 97 deletions
diff --git a/gdb/i386-linux-nat.c b/gdb/i386-linux-nat.c
index 4914983..15e6a18 100644
--- a/gdb/i386-linux-nat.c
+++ b/gdb/i386-linux-nat.c
@@ -22,11 +22,6 @@
#include "inferior.h"
#include "gdbcore.h"
-/* For i386_linux_skip_solib_resolver. */
-#include "symtab.h"
-#include "symfile.h"
-#include "objfiles.h"
-
#include <sys/ptrace.h>
#include <sys/user.h>
#include <sys/procfs.h>
@@ -797,98 +792,6 @@ child_resume (int pid, int step, enum target_signal signal)
}
-/* Calling functions in shared libraries. */
-/* FIXME: kettenis/2000-03-05: Doesn't this belong in a
- target-dependent file? The function
- `i386_linux_skip_solib_resolver' is mentioned in
- `config/i386/tm-linux.h'. */
-
-/* Find the minimal symbol named NAME, and return both the minsym
- struct and its objfile. This probably ought to be in minsym.c, but
- everything there is trying to deal with things like C++ and
- SOFUN_ADDRESS_MAYBE_TURQUOISE, ... Since this is so simple, it may
- be considered too special-purpose for general consumption. */
-
-static struct minimal_symbol *
-find_minsym_and_objfile (char *name, struct objfile **objfile_p)
-{
- struct objfile *objfile;
-
- ALL_OBJFILES (objfile)
- {
- struct minimal_symbol *msym;
-
- ALL_OBJFILE_MSYMBOLS (objfile, msym)
- {
- if (SYMBOL_NAME (msym)
- && STREQ (SYMBOL_NAME (msym), name))
- {
- *objfile_p = objfile;
- return msym;
- }
- }
- }
-
- return 0;
-}
-
-static CORE_ADDR
-skip_hurd_resolver (CORE_ADDR pc)
-{
- /* The HURD dynamic linker is part of the GNU C library, so many
- GNU/Linux distributions use it. (All ELF versions, as far as I
- know.) An unresolved PLT entry points to "_dl_runtime_resolve",
- which calls "fixup" to patch the PLT, and then passes control to
- the function.
-
- We look for the symbol `_dl_runtime_resolve', and find `fixup' in
- the same objfile. If we are at the entry point of `fixup', then
- we set a breakpoint at the return address (at the top of the
- stack), and continue.
-
- It's kind of gross to do all these checks every time we're
- called, since they don't change once the executable has gotten
- started. But this is only a temporary hack --- upcoming versions
- of Linux will provide a portable, efficient interface for
- debugging programs that use shared libraries. */
-
- struct objfile *objfile;
- struct minimal_symbol *resolver
- = find_minsym_and_objfile ("_dl_runtime_resolve", &objfile);
-
- if (resolver)
- {
- struct minimal_symbol *fixup
- = lookup_minimal_symbol ("fixup", 0, objfile);
-
- if (fixup && SYMBOL_VALUE_ADDRESS (fixup) == pc)
- return (SAVED_PC_AFTER_CALL (get_current_frame ()));
- }
-
- return 0;
-}
-
-/* See the comments for SKIP_SOLIB_RESOLVER at the top of infrun.c.
- This function:
- 1) decides whether a PLT has sent us into the linker to resolve
- a function reference, and
- 2) if so, tells us where to set a temporary breakpoint that will
- trigger when the dynamic linker is done. */
-
-CORE_ADDR
-i386_linux_skip_solib_resolver (CORE_ADDR pc)
-{
- CORE_ADDR result;
-
- /* Plug in functions for other kinds of resolvers here. */
- result = skip_hurd_resolver (pc);
- if (result)
- return result;
-
- return 0;
-}
-
-
/* Register that we are able to handle Linux ELF core file formats. */
static struct core_fns linux_elf_core_fns =