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https://github.com/bminor/binutils-gdb.git
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a5cbe67512
I noticed my IDE (VSCode) starting to automatically trim trailing
whitespaces on save, despite the setting for it being disabled. I
realized that this is because the .editorconfig file now has
trim_trailing_whitespace = true
for many file types. If we have this EditorConfig setting forcing
editors to trim trailing whitespaces, I think it would make sense to
clean up trailing whitespaces from our files. Otherwise, people will
always get spurious whitespace changes when editing these files.
I did a mass cleanup using this command:
$ find gdb gdbserver gdbsupport -type f \( \
-name "*.c" -o \
-name "*.h" -o \
-name "*.cc" -o \
-name "*.texi" -o \
-name "*.exp" -o \
-name "*.tcl" -o \
-name "*.py" -o \
-name "*.s" -o \
-name "*.S" -o \
-name "*.asm" -o \
-name "*.awk" -o \
-name "*.ac" -o \
-name "Makefile*" -o \
-name "*.sh" -o \
-name "*.adb" -o \
-name "*.ads" -o \
-name "*.d" -o \
-name "*.go" -o \
-name "*.F90" -o \
-name "*.f90" \
\) -exec sed -ri 's/[ \t]+$//' {} +
I then did an autotools regen, because we don't actually want to change
the Makefile and Makefile.in files that are generated.
Change-Id: I6f91b83e3b8c4dc7d5d51a2ebf60706120efe691
76 lines
2.7 KiB
C
76 lines
2.7 KiB
C
/* Target-dependent code for the GNU C Library (glibc).
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Copyright (C) 2002-2025 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "frame.h"
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#include "symtab.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "glibc-tdep.h"
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/* Calling functions in shared libraries. */
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/* See the comments for SKIP_SOLIB_RESOLVER at the top of infrun.c.
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This function:
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1) decides whether a PLT has sent us into the linker to resolve
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a function reference, and
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2) if so, tells us where to set a temporary breakpoint that will
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trigger when the dynamic linker is done. */
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CORE_ADDR
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glibc_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc)
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{
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/* The GNU dynamic linker is part of the GNU C library, and is used
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by all GNU systems (GNU/Hurd, GNU/Linux). An unresolved PLT
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entry points to "_dl_runtime_resolve", which calls "fixup" to
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patch the PLT, and then passes control to the function.
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We look for the symbol `_dl_runtime_resolve', and find `fixup' in
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the same objfile. If we are at the entry point of `fixup', then
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we set a breakpoint at the return address (at the top of the
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stack), and continue.
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It's kind of gross to do all these checks every time we're
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called, since they don't change once the executable has gotten
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started. But this is only a temporary hack --- upcoming versions
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of GNU/Linux will provide a portable, efficient interface for
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debugging programs that use shared libraries. */
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bound_minimal_symbol resolver
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= lookup_minimal_symbol (current_program_space, "_dl_runtime_resolve");
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if (resolver.minsym)
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{
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/* The dynamic linker began using this name in early 2005. */
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bound_minimal_symbol fixup
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= lookup_minimal_symbol (current_program_space, "_dl_fixup",
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resolver.objfile);
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/* This is the name used in older versions. */
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if (! fixup.minsym)
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fixup = lookup_minimal_symbol (current_program_space, "fixup",
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resolver.objfile);
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if (fixup.minsym && fixup.value_address () == pc)
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return frame_unwind_caller_pc (get_current_frame ());
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}
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return 0;
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}
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