2009-10-19 Michael Snyder <msnyder@vmware.com>

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

diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h
index 027541d63e6718c6f959044c59e7488057220d1e..df42828306de65bfadd4d9e7d6a04d9a3590afad 100644 (file)
--- a/gdb/gdbarch.h
+++ b/gdb/gdbarch.h
@@ -734,6 +734,20 @@ typedef struct displaced_step_closure * (gdbarch_displaced_step_copy_insn_ftype)
 extern struct displaced_step_closure * gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
 extern void set_gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, gdbarch_displaced_step_copy_insn_ftype *displaced_step_copy_insn);
 
+/* Return true if GDB should use hardware single-stepping to execute
+   the displaced instruction identified by CLOSURE.  If false,
+   GDB will simply restart execution at the displaced instruction
+   location, and it is up to the target to ensure GDB will receive
+   control again (e.g. by placing a software breakpoint instruction
+   into the displaced instruction buffer).
+  
+   The default implementation returns false on all targets that
+   provide a gdbarch_software_single_step routine, and true otherwise. */
+
+typedef int (gdbarch_displaced_step_hw_singlestep_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
+extern int gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
+extern void set_gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, gdbarch_displaced_step_hw_singlestep_ftype *displaced_step_hw_singlestep);
+
 /* Fix up the state resulting from successfully single-stepping a
    displaced instruction, to give the result we would have gotten from
    stepping the instruction in its original location.
@@ -822,6 +836,15 @@ typedef int (gdbarch_process_record_ftype) (struct gdbarch *gdbarch, struct regc
 extern int gdbarch_process_record (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR addr);
 extern void set_gdbarch_process_record (struct gdbarch *gdbarch, gdbarch_process_record_ftype *process_record);
 
+/* Save process state after a signal.
+   Return -1 if something goes wrong, 0 otherwise. */
+
+extern int gdbarch_process_record_signal_p (struct gdbarch *gdbarch);
+
+typedef int (gdbarch_process_record_signal_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, enum target_signal signal);
+extern int gdbarch_process_record_signal (struct gdbarch *gdbarch, struct regcache *regcache, enum target_signal signal);
+extern void set_gdbarch_process_record_signal (struct gdbarch *gdbarch, gdbarch_process_record_signal_ftype *process_record_signal);
+
 /* Signal translation: translate inferior's signal (host's) number into
    GDB's representation. */
 
@@ -880,6 +903,12 @@ extern void set_gdbarch_has_global_solist (struct gdbarch *gdbarch, int has_glob
 extern int gdbarch_has_global_breakpoints (struct gdbarch *gdbarch);
 extern void set_gdbarch_has_global_breakpoints (struct gdbarch *gdbarch, int has_global_breakpoints);
 
+/* True if inferiors share an address space (e.g., uClinux). */
+
+typedef int (gdbarch_has_shared_address_space_ftype) (struct gdbarch *gdbarch);
+extern int gdbarch_has_shared_address_space (struct gdbarch *gdbarch);
+extern void set_gdbarch_has_shared_address_space (struct gdbarch *gdbarch, gdbarch_has_shared_address_space_ftype *has_shared_address_space);
+
 /* Definition for an unknown syscall, used basically in error-cases.  */
 #define UNKNOWN_SYSCALL (-1)