diff options
Diffstat (limited to 'gdb/i386-nto-tdep.c')
| -rw-r--r-- | gdb/i386-nto-tdep.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/gdb/i386-nto-tdep.c b/gdb/i386-nto-tdep.c index b35dd2a13b7..381119f7033 100644 --- a/gdb/i386-nto-tdep.c +++ b/gdb/i386-nto-tdep.c @@ -231,14 +231,20 @@ i386nto_pc_in_sigtramp (CORE_ADDR pc, char *name) return name && strcmp ("__signalstub", name) == 0; } -#define SIGCONTEXT_OFFSET 136 +#define I386_NTO_SIGCONTEXT_OFFSET 136 + +/* Assuming NEXT_FRAME is a frame following a QNX Neutrino sigtramp + routine, return the address of the associated sigcontext structure. */ + static CORE_ADDR -i386nto_sigcontext_addr (struct frame_info *frame) +i386nto_sigcontext_addr (struct frame_info *next_frame) { - if (get_next_frame (frame)) - return get_frame_base (get_next_frame (frame)) + SIGCONTEXT_OFFSET; + char buf[4]; + + frame_unwind_register (next_frame, SP_REGNUM, buf); + sp = extract_unsigned_integer (buf, 4); - return read_register (SP_REGNUM) + SIGCONTEXT_OFFSET; + return sp + I386_NTO_SIGCONTEXT_OFFSET; } static void |