20fa339009
On ppc64-linux a function symbol does not point to code, but to the
function descriptor. Thus the previous change for this test case
broke it:
https://sourceware.org/ml/gdb-patches/2014-01/msg00275.html
This patch reverts to the original method, re-introducing '_start'
symbols. In addition, it adds sufficient alignment before the label,
such that the label never points into an alignment gap.
gdb/testsuite/ChangeLog:
* gdb.dwarf2/dw2-dir-file-name.c (FUNC): Insert alignment and
define "*_start" label. Make "name" static.
* gdb.dwarf2/dw2-dir-file-name.exp: Replace references to
${name} by references to ${name}_start.
94 lines
3.6 KiB
C
94 lines
3.6 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2012-2014 Free Software Foundation, Inc.
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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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volatile int v;
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static void
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marker (void)
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{
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v++;
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}
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/* *R* marks possibly invalid compiler output as the first path component is
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not absolute. Still DWARF-4 does not forbid such DWARF; GCC does not
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produce it. */
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#define FUNCBLOCK \
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FUNC (compdir_missing__ldir_missing__file_basename) /*R*/\
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FUNC (compdir_missing__ldir_missing__file_relative) /*R*/\
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FUNC (compdir_missing__ldir_missing__file_absolute) \
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FUNC (compdir_missing__ldir_relative_file_basename) /*R*/\
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FUNC (compdir_missing__ldir_relative_file_relative) /*R*/\
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FUNC (compdir_missing__ldir_relative_file_absolute) /*R*/\
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FUNC (compdir_missing__ldir_absolute_file_basename) \
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FUNC (compdir_missing__ldir_absolute_file_relative) \
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FUNC (compdir_missing__ldir_absolute_file_absolute_same) \
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FUNC (compdir_missing__ldir_absolute_file_absolute_different) \
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FUNC (compdir_relative_ldir_missing__file_basename) /*R*/\
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FUNC (compdir_relative_ldir_missing__file_relative) /*R*/\
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FUNC (compdir_relative_ldir_missing__file_absolute) /*R*/\
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FUNC (compdir_relative_ldir_relative_file_basename) /*R*/\
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FUNC (compdir_relative_ldir_relative_file_relative) /*R*/\
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FUNC (compdir_relative_ldir_relative_file_absolute) /*R*/\
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FUNC (compdir_relative_ldir_absolute_file_basename) /*R*/\
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FUNC (compdir_relative_ldir_absolute_file_relative) /*R*/\
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FUNC (compdir_relative_ldir_absolute_file_absolute_same) /*R*/\
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FUNC (compdir_relative_ldir_absolute_file_absolute_different) /*R*/\
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FUNC (compdir_absolute_ldir_missing__file_basename) \
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FUNC (compdir_absolute_ldir_missing__file_relative) \
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FUNC (compdir_absolute_ldir_missing__file_absolute_same) \
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FUNC (compdir_absolute_ldir_missing__file_absolute_different) \
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FUNC (compdir_absolute_ldir_relative_file_basename) \
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FUNC (compdir_absolute_ldir_relative_file_relative) \
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FUNC (compdir_absolute_ldir_relative_file_absolute_same) \
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FUNC (compdir_absolute_ldir_relative_file_absolute_different) \
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FUNC (compdir_absolute_ldir_absolute_file_basename_same) \
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FUNC (compdir_absolute_ldir_absolute_file_basename_different) \
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FUNC (compdir_absolute_ldir_absolute_file_relative_same) \
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FUNC (compdir_absolute_ldir_absolute_file_relative_different) \
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FUNC (compdir_absolute_ldir_absolute_file_absolute_same) \
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FUNC (compdir_absolute_ldir_absolute_file_absolute_different)
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/* Notes: (1) The '*_start' label below is needed because 'name' may
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point to a function descriptor instead of to the actual code. (2)
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The '.balign' should specify the highest possible function
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alignment across all supported architectures, such that the label
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never points into the alignment gap. */
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#define FUNC(name) \
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asm (".balign 8"); \
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asm (#name "_start: .globl " #name "_start\n"); \
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static void \
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name (void) \
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{ \
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v++; \
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} \
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asm (#name "_end: .globl " #name "_end\n");
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FUNCBLOCK
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#undef FUNC
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int
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main (void)
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{
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#define FUNC(name) \
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name ();
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FUNCBLOCK
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#undef FUNC
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return 0;
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}
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