* vax-tdep.c (vax_frame_chain): New function.

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

diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h
index f68584df63ab20318f30b1749c9326bc77fce9d7..f6a690d8a13070b57e10405bc49d3d87a0e599db 100644 (file)
--- a/gdb/gdbarch.h
+++ b/gdb/gdbarch.h
@@ -37,7 +37,9 @@
 
 #include "dis-asm.h" /* Get defs for disassemble_info, which unfortunately is a typedef. */
 #if !GDB_MULTI_ARCH
+/* Pull in function declarations refered to, indirectly, via macros.  */
 #include "value.h" /* For default_coerce_float_to_double which is referenced by a macro.  */
+#include "inferior.h"          /* For unsigned_address_to_pointer().  */
 #endif
 
 struct frame_info;
@@ -1688,8 +1690,8 @@ extern void set_gdbarch_inner_than (struct gdbarch *gdbarch, gdbarch_inner_than_
 #define BREAKPOINT_FROM_PC(pcptr, lenptr) (legacy_breakpoint_from_pc (pcptr, lenptr))
 #endif
 
-typedef unsigned char * (gdbarch_breakpoint_from_pc_ftype) (CORE_ADDR *pcptr, int *lenptr);
-extern unsigned char * gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr);
+typedef const unsigned char * (gdbarch_breakpoint_from_pc_ftype) (CORE_ADDR *pcptr, int *lenptr);
+extern const unsigned char * gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr);
 extern void set_gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, gdbarch_breakpoint_from_pc_ftype *breakpoint_from_pc);
 #if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL) && defined (BREAKPOINT_FROM_PC)
 #error "Non multi-arch definition of BREAKPOINT_FROM_PC"
@@ -2404,9 +2406,16 @@ extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
    architecture; ARCHES which is a list of the previously created
    ``struct gdbarch'' for this architecture.
 
-   The INIT function parameter INFO shall, as far as possible, be
-   pre-initialized with information obtained from INFO.ABFD or
-   previously selected architecture (if similar).
+   The INFO parameter is, as far as possible, be pre-initialized with
+   information obtained from INFO.ABFD or the previously selected
+   architecture.
+
+   The ARCHES parameter is a linked list (sorted most recently used)
+   of all the previously created architures for this architecture
+   family.  The (possibly NULL) ARCHES->gdbarch can used to access
+   values from the previously selected architecture for this
+   architecture family.  The global ``current_gdbarch'' shall not be
+   used.
 
    The INIT function shall return any of: NULL - indicating that it
    doesn't recognize the selected architecture; an existing ``struct