From: Jim Kingdon <jkingdon@engr.sgi.com>
Date: Fri, 30 Jul 1993 17:01:26 +0000 (+0000)
Subject: 	From J. Law:
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d3862cae596482cb87caafc0b9e6e1086b69146f;p=binutils-gdb.git

	From J. Law:
	* infcmd.c (read_pc): Remove PA specific code.
	* tm-hppa.h (TARGET_READ_PC): Define.
	* hppa-tdep.c (target_read_pc): New function.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 4d457a45758..a8dd15f49ce 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,10 @@
 Fri Jul 30 08:58:01 1993  Jim Kingdon  (kingdon@lioth.cygnus.com)
 
+	From J. Law:
+	* infcmd.c (read_pc): Remove PA specific code.
+	* tm-hppa.h (TARGET_READ_PC): Define.
+	* hppa-tdep.c (target_read_pc): New function.
+
 	* symtab.c (gdb_mangle_name): Deal with it if type lacks a name.
 
 Fri Jul 30 07:36:53 1993  Fred Fish  (fnf@deneb.cygnus.com)
diff --git a/gdb/config/pa/tm-hppa.h b/gdb/config/pa/tm-hppa.h
index deec76d8a0b..855154c8df4 100644
--- a/gdb/config/pa/tm-hppa.h
+++ b/gdb/config/pa/tm-hppa.h
@@ -44,11 +44,15 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 /* When passing a structure to a function, GCC passes the address
    in a register, not the structure itself. */
 
-#define REG_STRUCT_HAS_ADDR(gcc_p) (1)
-
-/* Groan */
+/* FIXME: I believe this is wrong.  I believe passing the address
+   depends only on the size of the argument being > 8, not on its type
+   (which is a much more sane way than the REG_STRUCT_HAS_ADDR way,
+   IMHO).  Also, as far as I know it is not dependent on it being
+   passed in a register.  This should be verified before changing
+   anything (in fact, printing structure arguments of
+   2,4,6,8,12,16,and 20 bytes should all be in the test suite).  */
 
-#define	ARGS_GROW_DOWN
+#define REG_STRUCT_HAS_ADDR(gcc_p) (1)
 
 /* Offset from address of function to start of its code.
    Zero on most machines.  */
@@ -77,11 +81,8 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
    the new frame is not set up until the new function executes
    some instructions.  */
 
-#define SAVED_PC_AFTER_CALL(frame) (read_register (RP_REGNUM) & ~3)
-
-/* Address of end of stack space. Who knows.  */
-
-#define STACK_END_ADDR 0x80000000
+#undef	SAVED_PC_AFTER_CALL
+#define SAVED_PC_AFTER_CALL(frame) saved_pc_after_call (frame)
 
 /* Stack grows upward */
 
@@ -139,10 +140,10 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
   "sr3", "sr5", "sr6", "sr7", "cr0", "cr8", "cr9", "ccr", "cr12", "cr13", \
   "cr24", "cr25", "cr26", "mpsfu_high", "mpsfu_low", "mpsfu_ovflo", "pad", \
   "fpsr", "fpe1", "fpe2", "fpe3", "fpe4", "fpe5", "fpe6", "fpe7", \
-  "fp4", "fp5", "fp6", "fp7", "fp8", \
-  "fp9", "fp10", "fp11", "fp12", "fp13", "fp14", "fp15", \
-  "fp16", "fp17", "fp18", "fp19", "fp20", "fp21", "fp22", "fp23", \
-  "fp24", "fp25", "fp26", "fp27", "fp28", "fp29", "fp30", "fp31"}
+  "fr4", "fr5", "fr6", "fr7", "fr8", \
+  "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", \
+  "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23", \
+  "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31"}
 
 /* Register numbers of various important registers.
    Note that some of these values are "real" register numbers,
@@ -313,7 +314,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
    by FI does not have a frame on the stack associated with it.  If it
    does not, FRAMELESS is set to 1, else 0.  */
 #define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
-  (FRAMELESS) = frameless_look_for_prologue(FI)
+  (FRAMELESS) = frameless_function_invocation(FI)
 
 #define FRAME_SAVED_PC(FRAME) frame_saved_pc (FRAME)
 
@@ -563,3 +564,5 @@ struct obj_unwind_info {
 };
 
 #define OBJ_UNWIND_INFO(obj) ((struct obj_unwind_info *)obj->obj_private)
+
+#define TARGET_READ_PC() target_read_pc ()
diff --git a/gdb/hppa-tdep.c b/gdb/hppa-tdep.c
index 3bae84585d2..24701b13ad5 100644
--- a/gdb/hppa-tdep.c
+++ b/gdb/hppa-tdep.c
@@ -840,6 +840,18 @@ hppa_fix_call_dummy (dummy, pc, fun, nargs, args, type, gcc_p)
   return dyncall_addr;
 }
 
+/* Get the PC from %r31 if currently in a syscall.  Also mask out privilege
+   bits.  */
+CORE_ADDR
+target_read_pc ()
+{
+  int flags = read_register (FLAGS_REGNUM);
+
+  if (flags & 2)
+    return read_register (31) & ~0x3;
+  return read_register (PC_REGNUM) & ~0x3;
+}
+
 /* return the alignment of a type in bytes. Structures have the maximum
    alignment required by their fields. */