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| author | Jeff Law <law@redhat.com> | 1995-10-18 05:48:23 +0000 |
|---|---|---|
| committer | Jeff Law <law@redhat.com> | 1995-10-18 05:48:23 +0000 |
| commit | 5812b9a12d46d1e3e2818d460e7e52791a678276 (patch) | |
| tree | 6a44e49f48f4bda007696a920abea1cda2219f62 /gdb/hppa-tdep.c | |
| parent | 00c916f4a83950d361c50aab635ca2ecf6c218f7 (diff) | |
| download | gdb-5812b9a12d46d1e3e2818d460e7e52791a678276.zip gdb-5812b9a12d46d1e3e2818d460e7e52791a678276.tar.gz gdb-5812b9a12d46d1e3e2818d460e7e52791a678276.tar.bz2 | |
* hppa-tdep.c (frame_chain): Fix more obscure problems caused
by system calls that core dump processes without saving all
the register state.
Diffstat (limited to 'gdb/hppa-tdep.c')
| -rw-r--r-- | gdb/hppa-tdep.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/gdb/hppa-tdep.c b/gdb/hppa-tdep.c index 3addc58..62531a3 100644 --- a/gdb/hppa-tdep.c +++ b/gdb/hppa-tdep.c @@ -1076,8 +1076,11 @@ frame_chain (frame) /* Abominable hack. */ if (current_target.to_has_execution == 0 - && saved_regs.regs[FLAGS_REGNUM] - && (read_memory_integer (saved_regs.regs[FLAGS_REGNUM], 4) & 0x2)) + && ((saved_regs.regs[FLAGS_REGNUM] + && (read_memory_integer (saved_regs.regs[FLAGS_REGNUM], 4) + & 0x2)) + || (saved_regs.regs[FLAGS_REGNUM] == 0 + && read_register (FLAGS_REGNUM) & 0x2))) { u = find_unwind_entry (FRAME_SAVED_PC (frame)); if (!u) @@ -1091,6 +1094,29 @@ frame_chain (frame) } else { + struct frame_saved_regs saved_regs; + + /* Get the innermost frame. */ + tmp_frame = frame; + while (tmp_frame->next != NULL) + tmp_frame = tmp_frame->next; + + get_frame_saved_regs (tmp_frame, &saved_regs); + /* Abominable hack. See above. */ + if (current_target.to_has_execution == 0 + && ((saved_regs.regs[FLAGS_REGNUM] + && (read_memory_integer (saved_regs.regs[FLAGS_REGNUM], 4) + & 0x2)) + || (saved_regs.regs[FLAGS_REGNUM] == 0 + && read_register (FLAGS_REGNUM) & 0x2))) + { + u = find_unwind_entry (FRAME_SAVED_PC (frame)); + if (!u) + return read_memory_integer (saved_regs.regs[FP_REGNUM], 4); + else + return frame_base - (u->Total_frame_size << 3); + } + /* The value in %r3 was never saved into the stack (thus %r3 still holds the value of the previous frame pointer). */ return read_register (FP_REGNUM); |