Add cross platform SVR4 shared library support for PowerPC.

15 files changed, 77 insertions, 11 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index aa767ca..3d6c370 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,26 @@
 2001-11-30  Kevin Buettner  <kevinb@redhat.com>
 
+	* ppc-linux-tdep.c (solib-svr4.h): Include.
+	(ppc_linux_svr4_fetch_link_map_offsets): New function.
+	* ppc-tdep.h (ppc_linux_svr4_fetch_link_map_offsets): Declare.
+	* rs6000-tdep.c (solib-svr4.h): Include.
+	(rs6000_gdbarch_init): Set up ppc_linux_svr4_fetch_link_map_offsets()
+	as the link map offsets fetcher.
+
+	* config/powerpc/aix.mt (TDEPFILES): Add solib-svr4.o.
+	* config/powerpc/macos.mt (TDEPFILES): Likewise.
+	* config/powerpc/nbsd.mt (TDEPFILES): Likewise.
+	* config/powerpc/ppc-eabi.mt (TDEPFILES): Likewise.
+	* config/powerpc/ppc-sim.mt (TDEPFILES): Likewise.
+	* config/powerpc/ppcle-eabi.mt (TDEPFILES): Likewise.
+	* config/powerpc/ppcle-sim.mt (TDEPFILES): Likewise.
+	* config/powerpc/vxworks.mt (TDEPFILES): Likewise.
+	* config/rs6000/aix4.mt (TDEPFILES): Likewise.
+	* config/rs6000/rs6000.mt (TDEPFILES): Likewise.
+	* config/rs6000/rs6000lynx.mt (TDEPFILES): Likewise.
+
+2001-11-30  Kevin Buettner  <kevinb@redhat.com>
+
 	From Louis Hamilton  <hamilton@redhat.com>:
 	* arm-tdep.c (solib-svr4.h): Include.
 	(arm_linux_svr4_fetch_link_map_offsets): New function.
diff --git a/gdb/config/powerpc/aix.mt b/gdb/config/powerpc/aix.mt
index 985f71b..51bb625 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 ppc-linux-tdep.o
+TDEPFILES= rs6000-tdep.o ppc-linux-tdep.o solib.o solib-svr4.o
 TM_FILE= tm-ppc-aix.h
diff --git a/gdb/config/powerpc/macos.mt b/gdb/config/powerpc/macos.mt
index 061d9d6..31a4fdf 100644
--- a/gdb/config/powerpc/macos.mt
+++ b/gdb/config/powerpc/macos.mt
@@ -1,3 +1,3 @@
 # Target: PowerMac (PowerPC running MacOS)
-TDEPFILES= rs6000-tdep.o xcoffread.o ppc-linux-tdep.o
+TDEPFILES= rs6000-tdep.o xcoffread.o ppc-linux-tdep.o solib.o solib-svr4.o
 TM_FILE= tm-macos.h
diff --git a/gdb/config/powerpc/nbsd.mt b/gdb/config/powerpc/nbsd.mt
index acc5da8..46e6541 100644
--- a/gdb/config/powerpc/nbsd.mt
+++ b/gdb/config/powerpc/nbsd.mt
@@ -1,5 +1,5 @@
 # Target: PowerPC, running NetBSD
-TDEPFILES= rs6000-tdep.o ppc-linux-tdep.o
+TDEPFILES= rs6000-tdep.o ppc-linux-tdep.o solib.o solib-svr4.o
 TM_FILE= tm-nbsd.h
 
 GDBSERVER_DEPFILES= low-nbsd.o
diff --git a/gdb/config/powerpc/ppc-eabi.mt b/gdb/config/powerpc/ppc-eabi.mt
index 2751e1d..2d4a77f 100644
--- a/gdb/config/powerpc/ppc-eabi.mt
+++ b/gdb/config/powerpc/ppc-eabi.mt
@@ -1,3 +1,3 @@
 # Target: PowerPC running eabi
-TDEPFILES= rs6000-tdep.o monitor.o dsrec.o ppcbug-rom.o dink32-rom.o ppc-bdm.o ocd.o remote-sds.o ppc-linux-tdep.o
+TDEPFILES= rs6000-tdep.o monitor.o dsrec.o ppcbug-rom.o dink32-rom.o ppc-bdm.o ocd.o remote-sds.o ppc-linux-tdep.o solib.o solib-svr4.o
 TM_FILE= tm-ppc-eabi.h
diff --git a/gdb/config/powerpc/ppc-sim.mt b/gdb/config/powerpc/ppc-sim.mt
index a647cad..f2ad1f0 100644
--- a/gdb/config/powerpc/ppc-sim.mt
+++ b/gdb/config/powerpc/ppc-sim.mt
@@ -1,5 +1,5 @@
 # Target: PowerPC running eabi and including the simulator
-TDEPFILES= rs6000-tdep.o monitor.o dsrec.o ppcbug-rom.o dink32-rom.o ppc-bdm.o ocd.o remote-sds.o ppc-linux-tdep.o
+TDEPFILES= rs6000-tdep.o monitor.o dsrec.o ppcbug-rom.o dink32-rom.o ppc-bdm.o ocd.o remote-sds.o ppc-linux-tdep.o solib.o solib-svr4.o
 TM_FILE= tm-ppc-eabi.h
 
 SIM_OBS = remote-sim.o
diff --git a/gdb/config/powerpc/ppcle-eabi.mt b/gdb/config/powerpc/ppcle-eabi.mt
index 202c6b1..e748097 100644
--- a/gdb/config/powerpc/ppcle-eabi.mt
+++ b/gdb/config/powerpc/ppcle-eabi.mt
@@ -1,3 +1,3 @@
 # Target: PowerPC running eabi in little endian mode
-TDEPFILES= rs6000-tdep.o monitor.o dsrec.o ppcbug-rom.o ppc-bdm.o ocd.o ppc-linux-tdep.o
+TDEPFILES= rs6000-tdep.o monitor.o dsrec.o ppcbug-rom.o ppc-bdm.o ocd.o ppc-linux-tdep.o solib.o solib-svr4.o
 TM_FILE= tm-ppcle-eabi.h
diff --git a/gdb/config/powerpc/ppcle-sim.mt b/gdb/config/powerpc/ppcle-sim.mt
index e3be0d8..558c0dc 100644
--- a/gdb/config/powerpc/ppcle-sim.mt
+++ b/gdb/config/powerpc/ppcle-sim.mt
@@ -1,5 +1,5 @@
 # Target: PowerPC running eabi in little endian mode under the simulator
-TDEPFILES= rs6000-tdep.o monitor.o dsrec.o ppcbug-rom.o ppc-bdm.o ocd.o ppc-linux-tdep.o
+TDEPFILES= rs6000-tdep.o monitor.o dsrec.o ppcbug-rom.o ppc-bdm.o ocd.o ppc-linux-tdep.o solib.o solib-svr4.o
 TM_FILE= tm-ppcle-eabi.h
 
 SIM_OBS = remote-sim.o
diff --git a/gdb/config/powerpc/vxworks.mt b/gdb/config/powerpc/vxworks.mt
index 11d8ef2..ba6e17b 100644
--- a/gdb/config/powerpc/vxworks.mt
+++ b/gdb/config/powerpc/vxworks.mt
@@ -1,3 +1,3 @@
 # Target: Powerpc running VxWorks
-TDEPFILES= rs6000-tdep.o ppc-linux-tdep.o
+TDEPFILES= rs6000-tdep.o ppc-linux-tdep.o solib.o solib-svr4.o
 TM_FILE= tm-vxworks.h
diff --git a/gdb/config/rs6000/aix4.mt b/gdb/config/rs6000/aix4.mt
index f1082b3..fb9d003 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 xcoffread.o ppc-linux-tdep.o
+TDEPFILES= rs6000-tdep.o xcoffread.o ppc-linux-tdep.o solib.o solib-svr4.o
 TM_FILE= tm-rs6000-aix4.h
diff --git a/gdb/config/rs6000/rs6000.mt b/gdb/config/rs6000/rs6000.mt
index a9afe89..5ffcc01 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 xcoffread.o ppc-linux-tdep.o
+TDEPFILES= rs6000-tdep.o xcoffread.o ppc-linux-tdep.o solib.o solib-svr4.o
 TM_FILE= tm-rs6000.h
diff --git a/gdb/config/rs6000/rs6000lynx.mt b/gdb/config/rs6000/rs6000lynx.mt
index fae6d8c..69aeb60 100644
--- a/gdb/config/rs6000/rs6000lynx.mt
+++ b/gdb/config/rs6000/rs6000lynx.mt
@@ -1,3 +1,3 @@
 # Target: IBM RS6000 running LynxOS
-TDEPFILES= coff-solib.o rs6000-tdep.o ppc-linux-tdep.o
+TDEPFILES= coff-solib.o rs6000-tdep.o ppc-linux-tdep.o solib.o solib-svr4.o
 TM_FILE= tm-rs6000ly.h
diff --git a/gdb/ppc-linux-tdep.c b/gdb/ppc-linux-tdep.c
index 06fc294..fb60385 100644
--- a/gdb/ppc-linux-tdep.c
+++ b/gdb/ppc-linux-tdep.c
@@ -32,6 +32,7 @@
 #include "regcache.h"
 #include "value.h"
 
+#include "solib-svr4.h"
 #include "ppc-tdep.h"
 
 /* The following two instructions are used in the signal trampoline
@@ -763,3 +764,43 @@ ppc_linux_memory_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
 
   return val;
 }
+
+/* Fetch (and possibly build) an appropriate link_map_offsets
+   structure for Linux/PPC targets using the struct offsets
+   defined in link.h (but without actual reference to that file).
+
+   This makes it possible to access Linux/PPC shared libraries from a
+   GDB that was not built on an Linux/PPC host (for cross debugging).  */
+
+struct link_map_offsets *
+ppc_linux_svr4_fetch_link_map_offsets (void)
+{
+  static struct link_map_offsets lmo;
+  static struct link_map_offsets *lmp = NULL;
+
+  if (lmp == NULL)
+    {
+      lmp = &lmo;
+
+      lmo.r_debug_size = 8;	/* The actual size is 20 bytes, but
+				   this is all we need.  */
+      lmo.r_map_offset = 4;
+      lmo.r_map_size   = 4;
+
+      lmo.link_map_size = 20;	/* The actual size is 560 bytes, but
+				   this is all we need.  */
+      lmo.l_addr_offset = 0;
+      lmo.l_addr_size   = 4;
+
+      lmo.l_name_offset = 4;
+      lmo.l_name_size   = 4;
+
+      lmo.l_next_offset = 12;
+      lmo.l_next_size   = 4;
+
+      lmo.l_prev_offset = 16;
+      lmo.l_prev_size   = 4;
+    }
+
+  return lmp;
+}
diff --git a/gdb/ppc-tdep.h b/gdb/ppc-tdep.h
index e855223..9ed1567 100644
--- a/gdb/ppc-tdep.h
+++ b/gdb/ppc-tdep.h
@@ -34,6 +34,7 @@ CORE_ADDR ppc_linux_frame_chain (struct frame_info *);
 CORE_ADDR ppc_sysv_abi_push_arguments (int, struct value **, CORE_ADDR, int,
 				       CORE_ADDR);
 int ppc_linux_memory_remove_breakpoint (CORE_ADDR addr, char *contents_cache);
+struct link_map_offsets *ppc_linux_svr4_fetch_link_map_offsets (void);
 
 
 /* From rs6000-tdep.c... */
diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c
index 12c6ed5..4450070 100644
--- a/gdb/rs6000-tdep.c
+++ b/gdb/rs6000-tdep.c
@@ -40,6 +40,7 @@
 
 #include "elf-bfd.h"
 
+#include "solib-svr4.h"
 #include "ppc-tdep.h"
 
 /* If the kernel has to deliver a signal, it pushes a sigcontext
@@ -2333,6 +2334,8 @@ rs6000_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
 
       set_gdbarch_memory_remove_breakpoint (gdbarch,
 	                                    ppc_linux_memory_remove_breakpoint);
+      set_solib_svr4_fetch_link_map_offsets 
+	(gdbarch, ppc_linux_svr4_fetch_link_map_offsets);
     }
   else
     {