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| author | Daniel Jacobowitz <drow@false.org> | 2006-01-23 01:49:43 +0000 |
|---|---|---|
| committer | Daniel Jacobowitz <drow@false.org> | 2006-01-23 01:49:43 +0000 |
| commit | 721d14ba74f11a737711195f28de345a34073de2 (patch) | |
| tree | d6751a21edeae7cb9a7ecc72052caf500e7c3bcb /gdb/rs6000-tdep.c | |
| parent | 5625b94380f19d8dae04211a590cae809790e98f (diff) | |
| download | gdb-721d14ba74f11a737711195f28de345a34073de2.zip gdb-721d14ba74f11a737711195f28de345a34073de2.tar.gz gdb-721d14ba74f11a737711195f28de345a34073de2.tar.bz2 | |
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.
Diffstat (limited to 'gdb/rs6000-tdep.c')
| -rw-r--r-- | gdb/rs6000-tdep.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c index 54b33b3..1d4a437 100644 --- a/gdb/rs6000-tdep.c +++ b/gdb/rs6000-tdep.c @@ -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 */ |