Avoid NULL dereference.

[deliverable/binutils-gdb.git] / gdb / gdbarch.h

diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h
index 909db8c296adebbb376fd060bd954bf779c51a42..4f6db30bc32555ac49cd09eb81467228d88ae9b9 100644 (file)
--- a/gdb/gdbarch.h
+++ b/gdb/gdbarch.h
@@ -803,6 +803,16 @@ typedef int (gdbarch_target_signal_to_host_ftype) (struct gdbarch *gdbarch, enum
 extern int gdbarch_target_signal_to_host (struct gdbarch *gdbarch, enum target_signal ts);
 extern void set_gdbarch_target_signal_to_host (struct gdbarch *gdbarch, gdbarch_target_signal_to_host_ftype *target_signal_to_host);
 
+/* Extra signal info inspection.
+
+   Return a type suitable to inspect extra signal information. */
+
+extern int gdbarch_get_siginfo_type_p (struct gdbarch *gdbarch);
+
+typedef struct type * (gdbarch_get_siginfo_type_ftype) (struct gdbarch *gdbarch);
+extern struct type * gdbarch_get_siginfo_type (struct gdbarch *gdbarch);
+extern void set_gdbarch_get_siginfo_type (struct gdbarch *gdbarch, gdbarch_get_siginfo_type_ftype *get_siginfo_type);
+
 /* Record architecture-specific information from the symbol table. */
 
 extern int gdbarch_record_special_symbol_p (struct gdbarch *gdbarch);
@@ -812,7 +822,10 @@ extern void gdbarch_record_special_symbol (struct gdbarch *gdbarch, struct objfi
 extern void set_gdbarch_record_special_symbol (struct gdbarch *gdbarch, gdbarch_record_special_symbol_ftype *record_special_symbol);
 
 /* True if the list of shared libraries is one and only for all
-   processes, as opposed to a list of shared libraries per inferior. */
+   processes, as opposed to a list of shared libraries per inferior.
+   When this property is true, GDB assumes that since shared libraries
+   are shared across processes, so is all code.  Hence, GDB further
+   assumes an inserted breakpoint location is visible to all processes. */
 
 extern int gdbarch_has_global_solist (struct gdbarch *gdbarch);
 extern void set_gdbarch_has_global_solist (struct gdbarch *gdbarch, int has_global_solist);