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PR tdep/2029

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Suggested by Till Straumann <strauman@slac.stanford.edu>:
	* rs6000-tdep.c (skip_prologue): Update check for later mtlr
	instructions.  Handle PIC bcl.
This commit is contained in:
Daniel Jacobowitz 2006-01-23 01:49:43 +00:00
parent 5625b94380
commit 721d14ba74
2 changed files with 17 additions and 3 deletions
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7
gdb/ChangeLog
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@ -1,3 +1,10 @@
2006-01-22 Daniel Jacobowitz <dan@codesourcery.com>
PR tdep/2029
Suggested by Till Straumann <strauman@slac.stanford.edu>:
* rs6000-tdep.c (skip_prologue): Update check for later mtlr
instructions. Handle PIC bcl.
2006-01-22 Daniel Jacobowitz <dan@codesourcery.com>
* config/djgpp/README: Typo fix.

13
gdb/rs6000-tdep.c
View File

@ -1,8 +1,8 @@
/* Target-dependent code for GDB, the GNU debugger.
Copyright (C) 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996,
1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software
Foundation, Inc.
1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
Free Software Foundation, Inc.
This file is part of GDB.
@ -1013,7 +1013,7 @@ skip_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct rs6000_framedata *fdata)
remember just the first one, but skip over additional
ones. */
if (lr_reg < 0)
if (lr_reg == -1)
lr_reg = (op & 0x03e00000);
if (lr_reg == 0)
r0_contains_arg = 0;
@ -1126,6 +1126,13 @@ skip_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct rs6000_framedata *fdata)
continue;
}
else if ((op & 0xfe80ffff) == 0x42800005 && lr_reg != -1)
{
/* bcl 20,xx,.+4 is used to get the current PC, with or without
prediction bits. If the LR has already been saved, we can
skip it. */
continue;
}
else if (op == 0x48000005)
{ /* bl .+4 used in
-mrelocatable */