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Re: rs6000-tdep
- To: sbjohnson at ozemail dot com dot au
- Subject: Re: rs6000-tdep
- From: Nick Duffek <nsd at redhat dot com>
- Date: Fri, 14 Jul 2000 10:53:34 -0400
- CC: kevinb at cygnus dot com, gdb at sourceware dot cygnus dot com
- References: <396F162A.6D9F0628@ozemail.com.au>
On 14-Jul-2000, Steven Johnson wrote:
>Each problem is quite
>significant and i can't see how it could have ever compiled anywhere
>with these problems.
Yup, my AIX multi-arch changes a few weeks ago broke powerpc-eabi. Could
you try the appended patch?
>On another note, there used to be an extensive list of register names
>defined for varients of the PowerPC architecture, for example all of the
>SPR registers specific to the MPC860, etc.
They're still in rs6000-tdep.c. I tried to make them available via the
generic multi-arch "set architecture" command, but I haven't been able to
test them on various PowerPC variants, so it's possible that there's some
breakage.
Kevin, is it okay to commit this powerpc-eabi patch?
Nick Duffek
nsd@redhat.com
[patch follows]
Index: ppcbug-rom.c
===================================================================
RCS file: /cvs/src/src/gdb/ppcbug-rom.c,v
retrieving revision 1.1.1.3
diff -u -r1.1.1.3 ppcbug-rom.c
--- ppcbug-rom.c 1999/09/08 23:59:24 1.1.1.3
+++ ppcbug-rom.c 2000/07/07 17:08:10
@@ -104,7 +104,7 @@
* registers either. So, typing "info reg sp" becomes an "A7".
*/
-static char *ppcbug_regnames[NUM_REGS] =
+static char *ppcbug_regnames[] =
{
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
Index: gdb/rs6000-tdep.c
===================================================================
diff -up gdb/rs6000-tdep.c gdb/rs6000-tdep.c
--- gdb/rs6000-tdep.c Tue Jun 20 21:19:07 2000
+++ gdb/rs6000-tdep.c Tue Jun 20 21:17:27 2000
@@ -56,9 +56,6 @@
#define SIG_FRAME_LR_OFFSET 108
#define SIG_FRAME_FP_OFFSET 284
-/* Default offset from SP where the LR is stored */
-#define DEFAULT_LR_SAVE 8
-
/* To be used by skip_prologue. */
struct rs6000_framedata
@@ -2048,7 +2045,7 @@ rs6000_gdbarch_init (struct gdbarch_info
set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1);
set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0);
set_gdbarch_call_dummy_start_offset (gdbarch, 0);
- set_gdbarch_pc_in_call_dummy (gdbarch, rs6000_pc_in_call_dummy);
+ set_gdbarch_pc_in_call_dummy (gdbarch, generic_pc_in_call_dummy);
set_gdbarch_call_dummy_p (gdbarch, 1);
set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
set_gdbarch_get_saved_register (gdbarch, generic_get_saved_register);
Index: gdb/config/rs6000/tm-rs6000.h
===================================================================
diff -up gdb/config/rs6000/tm-rs6000.h gdb/config/rs6000/tm-rs6000.h
--- gdb/config/rs6000/tm-rs6000.h Tue Jun 20 21:19:13 2000
+++ gdb/config/rs6000/tm-rs6000.h Tue Jun 20 21:18:24 2000
@@ -94,6 +94,9 @@ extern void aix_process_linenos (void);
prev->next ? FRAME_SAVED_PC (prev->next) : read_pc ());
#define INIT_FRAME_PC(fromleaf, prev) /* nothing */
+/* Default offset from SP where the LR is stored */
+#define DEFAULT_LR_SAVE 8
+
/* Usually a function pointer's representation is simply the address
of the function. On the RS/6000 however, a function pointer is
represented by a pointer to a TOC entry. This TOC entry contains
Index: gdb/config/powerpc/tm-ppc-eabi.h
===================================================================
diff -up gdb/config/powerpc/tm-ppc-eabi.h gdb/config/powerpc/tm-ppc-eabi.h
--- gdb/config/powerpc/tm-ppc-eabi.h Tue Jun 20 21:19:23 2000
+++ gdb/config/powerpc/tm-ppc-eabi.h Tue Jun 20 21:17:58 2000
@@ -30,8 +30,6 @@
#undef DEFAULT_LR_SAVE
#define DEFAULT_LR_SAVE 4 /* eabi saves LR at 4 off of SP */
-#define GDB_TARGET_POWERPC
-
#undef PC_LOAD_SEGMENT
#undef PROCESS_LINENUMBER_HOOK
@@ -42,38 +40,6 @@
#define ELF_OBJECT_FORMAT 1
#define TARGET_BYTE_ORDER_SELECTABLE_P 1
-
-/* return true if a given `pc' value is in `call dummy' function. */
-/* FIXME: This just checks for the end of the stack, which is broken
- for things like stepping through gcc nested function stubs. */
-#undef PC_IN_CALL_DUMMY
-
-/* generic dummy frame stuff */
-
-
-
-/* target-specific dummy_frame stuff */
-
-extern struct frame_info *rs6000_pop_frame (struct frame_info *frame);
-
-extern CORE_ADDR ppc_push_return_address (CORE_ADDR, CORE_ADDR);
-
-#undef PUSH_DUMMY_FRAME
-#define PUSH_DUMMY_FRAME generic_push_dummy_frame ()
-
-#define PUSH_RETURN_ADDRESS(PC, SP) ppc_push_return_address (PC, SP)
-
-/* override the standard get_saved_register function with
- one that takes account of generic CALL_DUMMY frames */
-#define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \
- generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
-
-#define USE_GENERIC_DUMMY_FRAMES 1
-#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
-#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
-#define CALL_DUMMY_ADDRESS() entry_point_address ()
-#undef CALL_DUMMY_START_OFFSET
-#define CALL_DUMMY_START_OFFSET 0
/* The value of symbols of type N_SO and N_FUN maybe null when
it shouldn't be. */