export stub for signal trampoline as a signal trampoline too.
2005-12-13 Mark Kettenis <kettenis@gnu.org>
2005-12-13 Mark Kettenis <kettenis@gnu.org>
+ * hppa-hpux-tdep.c (hppa_hpux_sigtramp_unwind_sniffer): Detect
+ export stub for signal trampoline as a signal trampoline too.
+
* hppa-hpux-tdep.c (hppa_hpux_sigtramp_frame_unwind_cache): Don't
set pcoqh to rp.
* hppa-hpux-tdep.c (hppa_hpux_sigtramp_frame_unwind_cache): Don't
set pcoqh to rp.
u = find_unwind_entry (pc);
u = find_unwind_entry (pc);
+ /* If this is an export stub, try to get the unwind descriptor for
+ the actual function itself. */
+ if (u && u->stub_unwind.stub_type == EXPORT)
+ {
+ gdb_byte buf[HPPA_INSN_SIZE];
+ unsigned long insn;
+
+ if (!safe_frame_unwind_memory (next_frame, u->region_start,
+ buf, sizeof buf))
+ return NULL;
+
+ insn = extract_unsigned_integer (buf, sizeof buf);
+ if ((insn & 0xffe0e000) == 0xe8400000)
+ u = find_unwind_entry(u->region_start + hppa_extract_17 (insn) + 8);
+ }
+
if (u && u->HP_UX_interrupt_marker)
return &hppa_hpux_sigtramp_frame_unwind;
if (u && u->HP_UX_interrupt_marker)
return &hppa_hpux_sigtramp_frame_unwind;