Add auto-solib-add support for AIX, remove obsolete and unused

	SOLIB_SYMBOLS_MANUAL code, cleanup of AIX shared library handling code.
	* rs6000-nat.c (vmap_symtab):  Do not try to modify offsets
	if symbols are not yet loaded.
	(vmap_add_symbols):  New function to add symbols for a vmap entry.
	(add_vmap):  Turn errors into warnings, return NULL vmap upon
	failure. Add symbols via vmap_add_symbols only if requested.
	(xcoff_relocate_core):  Allow debugging of core files without an
	executable file. Handle NULL returns from add_vmap gracefully.
	* xcoffsolib.c (solib_add):  Remove, no longer needed.
	(solib_info):  Do not check for new shared libraries if there is no
	inferior process.
	(sharedlibrary_command):  Made static.
	Do not check for new shared libraries if there is no inferior process.
	Add symbols for requested shared libraries via vmap_add_symbols.
	(_initialize_solib):  Add `set auto-solib-add' command.
	* xcoffsolib.h (vmap_add_symbols):  Add prototype declaration.

	* config/rs6000/tm-rs6000.h (PC_LOAD_SEGMENT):  Move from here ...
	* config/rs6000/nm-rs6000.h:  ... to here, this is an AIX native
	feature.
	* config/powerpc/tm-macos.h, config/powerpc/tm-ppc-eabi.h,
	config/powerpc/tm-ppc-nw.h, config/rs6000/tm-rs6000ly.h:
	Remove #undef PC_LOAD_SEGMENT.
	* config/powerpc/aix.mt, config/rs6000/aix4.mt, config/rs6000/rs6000.mt
	(TDEPFILES):  Move xcoffsolib.o from here ...
	* config/powerpc/aix.mh, config/rs6000/aix4.mh, config/rs6000/rs6000.mh
	(NATDEPFILES):  ... to here, xcoffsolib.o contains AIX native code
	only.
	* rs6000-tdep.c:  Remove #include xcoffsolib.h, no longer needed.
	* xcoffsolib.h (xcoff_relocate_symtab_hook):  Remove declaration.
	* rs6000-nat.c (_initialize_core_rs6000):  Remove setting of
	xcoff_relocate_symtab_hook, no longer needed.
	* xcoffsolib.c (solib_info, sharedlibrary_command):  Remove
	xcoff_relocate_symtab_hook indirection, call xcoff_relocate_symtab
	directly, as xcoffsolib.c is now compiled in native AIX configurations
	only.
	* Makefile.in:  Update dependencies for rs6000-tdep.o, rs6000-nat.o
	and xcoffsolib.o.

12 files changed, 14 insertions, 18 deletions

diff --git a/gdb/config/powerpc/aix.mh b/gdb/config/powerpc/aix.mh
index ba3e0c2..30e4080 100644
--- a/gdb/config/powerpc/aix.mh
+++ b/gdb/config/powerpc/aix.mh
@@ -4,7 +4,8 @@ XM_FILE= xm-aix.h
 XDEPFILES= 
 
 NAT_FILE= nm-aix.h
-NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o rs6000-nat.o xcoffread.o
+NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o rs6000-nat.o \
+	     xcoffread.o xcoffsolib.o
 
 # When compiled with cc, for debugging, this argument should be passed.
 # We have no idea who our current compiler is though, so we skip it.
diff --git a/gdb/config/powerpc/aix.mt b/gdb/config/powerpc/aix.mt
index 38436ee..985f71b 100644
--- a/gdb/config/powerpc/aix.mt
+++ b/gdb/config/powerpc/aix.mt
@@ -1,3 +1,3 @@
 # Target: PowerPC running AIX
-TDEPFILES= rs6000-tdep.o xcoffsolib.o ppc-linux-tdep.o
+TDEPFILES= rs6000-tdep.o ppc-linux-tdep.o
 TM_FILE= tm-ppc-aix.h
diff --git a/gdb/config/powerpc/tm-macos.h b/gdb/config/powerpc/tm-macos.h
index bfd7a73..1cb5050 100644
--- a/gdb/config/powerpc/tm-macos.h
+++ b/gdb/config/powerpc/tm-macos.h
@@ -22,6 +22,3 @@
 #include "rs6000/tm-rs6000.h"
 
 #define GDB_TARGET_POWERPC
-
-/* This is no use to us.  */
-#undef PC_LOAD_SEGMENT
diff --git a/gdb/config/powerpc/tm-ppc-eabi.h b/gdb/config/powerpc/tm-ppc-eabi.h
index 57e056b..aef54dc 100644
--- a/gdb/config/powerpc/tm-ppc-eabi.h
+++ b/gdb/config/powerpc/tm-ppc-eabi.h
@@ -30,7 +30,6 @@
 #undef	DEFAULT_LR_SAVE
 #define	DEFAULT_LR_SAVE 4	/* eabi saves LR at 4 off of SP */
 
-#undef PC_LOAD_SEGMENT
 #undef PROCESS_LINENUMBER_HOOK
 
 #undef TEXT_SEGMENT_BASE
diff --git a/gdb/config/powerpc/tm-ppc-nw.h b/gdb/config/powerpc/tm-ppc-nw.h
index 7306ea0..32a58f4 100644
--- a/gdb/config/powerpc/tm-ppc-nw.h
+++ b/gdb/config/powerpc/tm-ppc-nw.h
@@ -26,7 +26,6 @@
 
 #define GDB_TARGET_POWERPC
 
-#undef PC_LOAD_SEGMENT
 #undef PROCESS_LINENUMBER_HOOK
 
 #endif /* TM_PPC_NW_H */
diff --git a/gdb/config/rs6000/aix4.mh b/gdb/config/rs6000/aix4.mh
index c5bc2da..8d105d9 100644
--- a/gdb/config/rs6000/aix4.mh
+++ b/gdb/config/rs6000/aix4.mh
@@ -4,7 +4,8 @@ XM_FILE= xm-aix4.h
 XDEPFILES= 
 
 NAT_FILE= nm-rs6000.h
-NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o rs6000-nat.o
+NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o rs6000-nat.o \
+	     xcoffsolib.o
 
 # When compiled with cc, for debugging, this argument should be passed.
 # We have no idea who our current compiler is though, so we skip it.
diff --git a/gdb/config/rs6000/aix4.mt b/gdb/config/rs6000/aix4.mt
index d602415..f1082b3 100644
--- a/gdb/config/rs6000/aix4.mt
+++ b/gdb/config/rs6000/aix4.mt
@@ -1,3 +1,3 @@
 # Target: IBM RS/6000 running AIX4
-TDEPFILES= rs6000-tdep.o xcoffsolib.o xcoffread.o ppc-linux-tdep.o
+TDEPFILES= rs6000-tdep.o xcoffread.o ppc-linux-tdep.o
 TM_FILE= tm-rs6000-aix4.h
diff --git a/gdb/config/rs6000/nm-rs6000.h b/gdb/config/rs6000/nm-rs6000.h
index 66a8652..d405aec 100644
--- a/gdb/config/rs6000/nm-rs6000.h
+++ b/gdb/config/rs6000/nm-rs6000.h
@@ -57,6 +57,11 @@ extern void xcoff_relocate_symtab (unsigned int);
 struct target_ops;
 extern void xcoff_relocate_core (struct target_ops *);
 
+/* Load segment of a given pc value. */
+
+#define	PC_LOAD_SEGMENT(PC)	pc_load_segment_name(PC)
+extern char *pc_load_segment_name (CORE_ADDR);
+
 /* Return sizeof user struct to callers in less machine dependent routines */
 
 #define KERNEL_U_SIZE kernel_u_size()
diff --git a/gdb/config/rs6000/rs6000.mh b/gdb/config/rs6000/rs6000.mh
index 600d616..ec877e7 100644
--- a/gdb/config/rs6000/rs6000.mh
+++ b/gdb/config/rs6000/rs6000.mh
@@ -4,7 +4,8 @@ XM_FILE= xm-rs6000.h
 XDEPFILES= 
 
 NAT_FILE= nm-rs6000.h
-NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o rs6000-nat.o
+NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o rs6000-nat.o \
+	     xcoffsolib.o
 
 # When compiled with cc, for debugging, this argument should be passed.
 # We have no idea who our current compiler is though, so we skip it.
diff --git a/gdb/config/rs6000/rs6000.mt b/gdb/config/rs6000/rs6000.mt
index 941ad32..a9afe89 100644
--- a/gdb/config/rs6000/rs6000.mt
+++ b/gdb/config/rs6000/rs6000.mt
@@ -1,3 +1,3 @@
 # Target: IBM RS/6000 running AIX
-TDEPFILES= rs6000-tdep.o xcoffsolib.o xcoffread.o ppc-linux-tdep.o
+TDEPFILES= rs6000-tdep.o xcoffread.o ppc-linux-tdep.o
 TM_FILE= tm-rs6000.h
diff --git a/gdb/config/rs6000/tm-rs6000.h b/gdb/config/rs6000/tm-rs6000.h
index beb445d..6ed2955 100644
--- a/gdb/config/rs6000/tm-rs6000.h
+++ b/gdb/config/rs6000/tm-rs6000.h
@@ -26,11 +26,6 @@
 
 #define TEXT_SEGMENT_BASE	0x10000000
 
-/* Load segment of a given pc value. */
-
-#define	PC_LOAD_SEGMENT(PC)	pc_load_segment_name(PC)
-extern char *pc_load_segment_name (CORE_ADDR);
-
 /* AIX's assembler doesn't grok dollar signs in identifiers.
    So we use dots instead.  This item must be coordinated with G++. */
 #undef CPLUS_MARKER
diff --git a/gdb/config/rs6000/tm-rs6000ly.h b/gdb/config/rs6000/tm-rs6000ly.h
index ce55513..7dd57a4 100644
--- a/gdb/config/rs6000/tm-rs6000ly.h
+++ b/gdb/config/rs6000/tm-rs6000ly.h
@@ -26,8 +26,6 @@
 /* Use generic RS6000 definitions. */
 #include "rs6000/tm-rs6000.h"
 
-#undef PC_LOAD_SEGMENT
-
 #define CANNOT_STORE_REGISTER(regno) (regno == PS_REGNUM)
 
 #endif /* TM_RS6000LYNX_H */