diff options
Diffstat (limited to 'gdb/a29k-tdep.c')
| -rw-r--r-- | gdb/a29k-tdep.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/gdb/a29k-tdep.c b/gdb/a29k-tdep.c index 88b630a..20e9d53 100644 --- a/gdb/a29k-tdep.c +++ b/gdb/a29k-tdep.c @@ -1,5 +1,5 @@ /* Target-machine dependent code for the AMD 29000 - Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc. + Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc. Contributed by Cygnus Support. Written by Jim Kingdon. This file is part of GDB. @@ -149,17 +149,18 @@ examine_prologue (pc, rsize, msize, mfp_used) } p += 4; - /* Next instruction must be asgeu V_SPILL,gr1,rab. + /* Next instruction ought to be asgeu V_SPILL,gr1,rab. * We don't check the vector number to allow for kernel debugging. The * kernel will use a different trap number. + * If this insn is missing, we just keep going; Metaware R2.3u compiler + * generates prologue that intermixes initializations and puts the asgeu + * way down. */ insn = read_memory_integer (p, 4); - if ((insn & 0xff00ffff) != (0x5e000100|RAB_HW_REGNUM)) + if ((insn & 0xff00ffff) == (0x5e000100|RAB_HW_REGNUM)) { - p = pc; - goto done; + p += 4; } - p += 4; /* Next instruction usually sets the frame pointer (lr1) by adding <size * 4> from gr1. However, this can (and high C does) be @@ -271,6 +272,19 @@ examine_prologue (pc, rsize, msize, mfp_used) } } + /* Next instruction might be asgeu V_SPILL,gr1,rab. + * We don't check the vector number to allow for kernel debugging. The + * kernel will use a different trap number. + * Metaware R2.3u compiler + * generates prologue that intermixes initializations and puts the asgeu + * way down after everything else. + */ + insn = read_memory_integer (p, 4); + if ((insn & 0xff00ffff) == (0x5e000100|RAB_HW_REGNUM)) + { + p += 4; + } + done: if (msymbol != NULL) { |