bd286a290b
This patch fixes the failures that occur with the gdb.dwarf2/dw2-dir-file-name.exp test on 64-bit MIPS and compressed MIPS ISAs (i.e. MIPS16 and microMIPS). The failures on 64-bit occur because the generated DWARF address information is always 32-bit, which causes the upper 32-bits of addresses to be truncated and causes breakpoints to be set on the wrong address if any of the upper 32-bits are non-zero. I suspect that other 64-bit architectures get away with it because they place all their instructions at a VMA lower than 2^32 by default. This patch causes 64-bit addresses to be generated if a 64-bit target is detected. The failures on MIPS16 and microMIPS occur because the breakpoint address needs to have the LSB set to 1 (used to indicate that the code is compressed). However, the function name is interpreted as a data label, causing GDB to set breakpoints at even addresses. This is fixed by explicitly adding a '.insn' directive (see https://sourceware.org/binutils/docs/as/MIPS-insn.html) after the label on MIPS only. gdb/testsuite/ 2014-10-18 Kwok Cheung Yeung <kcy@codesourcery.com> * gdb.dwarf2/dw2-dir-file-name.exp (addr_len): New. (out_cu): Use addr_len for the size of addresses. (out_line): Likewise. Size DW_LNE_set_address instruction according to addr_len. * gdb.dwarf2/dw2-dir-file-name.c (START_INSNS): New. (FUNC): Add START_INSNS to definition.
101 lines
3.7 KiB
C
101 lines
3.7 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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#ifdef __mips__
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#define START_INSNS asm (".insn\n");
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#else
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#define START_INSNS
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#endif
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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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START_INSNS \
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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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