diff options
Diffstat (limited to 'gdb/rs6000-tdep.c')
| -rw-r--r-- | gdb/rs6000-tdep.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c index fea31f1..1a26ab2 100644 --- a/gdb/rs6000-tdep.c +++ b/gdb/rs6000-tdep.c @@ -187,6 +187,15 @@ int pc; if ((op & 0xfc000000) == 0x48000000) { /* bl foo, to save fprs??? */ pc += 4; op = read_memory_integer (pc, 4); + + /* At this point, make sure this is not a trampoline function + (a function that simply calls another functions, and nothing else). + If the next is not a nop, this branch was part of the function + prologue. */ + + if (op == 0x4def7b82 || /* crorc 15, 15, 15 */ + op == 0x0) + return pc - 4; /* don't skip over this branch */ } if ((op & 0xfc1f0000) == 0xbc010000) { /* stm Rx, NUM(r1) */ @@ -546,6 +555,14 @@ function_frame_info (pc, fdata) if ((op & 0xfc000000) == 0x48000000) { /* bl foo, to save fprs??? */ pc += 4; op = read_memory_integer (pc, 4); + /* At this point, make sure this is not a trampoline function + (a function that simply calls another functions, and nothing else). + If the next is not a nop, this branch was part of the function + prologue. */ + + if (op == 0x4def7b82 || /* crorc 15, 15, 15 */ + op == 0x0) + return; /* prologue is over */ } if ((op & 0xfc1f0000) == 0xd8010000) { /* stfd Rx,NUM(r1) */ |