See the huge ChangeLog entry that has the header:

   Thu Jul 25 19:41:31 1996  Fred Fish  <fnf@cygnus.com>

for details about these changes.  I was going to include the complete
entry in the checkin message but it was apparently so large it caused
cvs to dump core.

17 files changed, 110 insertions, 72 deletions

diff --git a/gdb/config/alpha/tm-alpha.h b/gdb/config/alpha/tm-alpha.h
index d00bca9..7cb21a4 100644
--- a/gdb/config/alpha/tm-alpha.h
+++ b/gdb/config/alpha/tm-alpha.h
@@ -1,5 +1,6 @@
-/* Definitions to make GDB run on an Alpha box under OSF1.
-   Copyright 1993 Free Software Foundation, Inc.
+/* Definitions to make GDB run on an Alpha box under OSF1.  This is
+   also used by the Alpha/Netware and Alpha/Linux targets.
+   Copyright 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
 
 This file is part of GDB.
 
@@ -15,7 +16,10 @@ GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef TM_ALPHA_H
+#define TM_ALPHA_H
 
 #include "bfd.h"
 #include "coff/sym.h"		/* Needed for PDR below.  */
@@ -77,21 +81,20 @@ alpha_saved_pc_after_call PARAMS ((struct frame_info *));
    This is often the number of bytes in BREAKPOINT
    but not always.  */
 
+#ifndef DECR_PC_AFTER_BREAK
 #define DECR_PC_AFTER_BREAK 4
+#endif
 
 /* Nonzero if instruction at PC is a return instruction.
    "ret $zero,($ra),1" on alpha. */
 
 #define ABOUT_TO_RETURN(pc) (read_memory_integer (pc, 4) == 0x6bfa8001)
 
-/* Return 1 if P points to an invalid floating point value. */
-
-#define INVALID_FLOAT(p,l) 0
-
-/* Say how long (all) registers are.
-   This is unused for the alpha, but the define is necessary.  */
+/* Say how long (ordinary) registers are.  This is a piece of bogosity
+   used in push_word and a few other places; REGISTER_RAW_SIZE is the
+   real way to know how big a register is.  */
 
-#define REGISTER_TYPE long
+#define REGISTER_SIZE 8
 
 /* Number of machine registers */
 
@@ -120,8 +123,10 @@ alpha_saved_pc_after_call PARAMS ((struct frame_info *));
    but serves to get the desired value when passed to read_register.  */
 
 #define V0_REGNUM 0		/* Function integer return value */
+#define T7_REGNUM 8		/* Return address register for OSF/1 __add* */
 #define GCC_FP_REGNUM 15	/* Used by gcc as frame register */
 #define A0_REGNUM 16		/* Loc of first arg during a subr call */
+#define T9_REGNUM 23		/* Return address register for OSF/1 __div* */
 #define T12_REGNUM 27		/* Contains start addr of current proc */
 #define SP_REGNUM 30		/* Contains address of top of stack */
 #define RA_REGNUM 26		/* Contains return address value */
@@ -244,9 +249,8 @@ alpha_store_return_value PARAMS ((struct type *, char *));
 /* FRAME_CHAIN takes a frame's nominal address
    and produces the frame's chain-pointer. */
 
-#define FRAME_CHAIN(thisframe) (FRAME_ADDR)alpha_frame_chain(thisframe)
-extern CORE_ADDR
-alpha_frame_chain PARAMS ((struct frame_info *));
+#define FRAME_CHAIN(thisframe) (CORE_ADDR) alpha_frame_chain (thisframe)
+extern CORE_ADDR alpha_frame_chain PARAMS ((struct frame_info *));
 
 /* Define other aspects of the stack frame.  */
 
@@ -298,9 +302,15 @@ alpha_frame_saved_pc PARAMS ((struct frame_info *));
    ways in the stack frame.  sp is even more special:
    the address we return for it IS the sp for the next frame.  */
 
-#define FRAME_FIND_SAVED_REGS(fi, frame_saved_regs) ( \
-  (frame_saved_regs) = *(fi)->saved_regs, \
-  (frame_saved_regs).regs[SP_REGNUM] = (fi)->frame)
+extern void alpha_find_saved_regs PARAMS ((struct frame_info *));
+
+#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
+  do { \
+    if ((frame_info)->saved_regs == NULL) \
+      alpha_find_saved_regs (frame_info); \
+    (frame_saved_regs) = *(frame_info)->saved_regs; \
+    (frame_saved_regs).regs[SP_REGNUM] = (frame_info)->frame; \
+  } while (0)
 
 
 /* Things needed for making the inferior call functions.  */
@@ -332,18 +342,21 @@ alpha_pop_frame PARAMS ((void));
 
 #define CALL_DUMMY_LOCATION AT_ENTRY_POINT
 
-/* We need a fake CALL_DUMMY definition to enable the proper
+/* On the Alpha the call dummy code is never copied to user space,
+   stopping the user call is achieved via a bp_call_dummy breakpoint.
+   But we need a fake CALL_DUMMY definition to enable the proper
    call_function_by_hand and to avoid zero length array warnings
    in valops.c  */
-   
-#define CALL_DUMMY {\
- 0x80,				/* call_pal bpt */			\
-}
+
+#define CALL_DUMMY { 0 }	/* Content doesn't matter. */
 
 #define CALL_DUMMY_START_OFFSET (0)
 
 #define CALL_DUMMY_BREAKPOINT_OFFSET (0)
 
+extern CORE_ADDR alpha_call_dummy_address PARAMS ((void));
+#define CALL_DUMMY_ADDRESS() alpha_call_dummy_address()
+
 /* Insert the specified number of args and function address
    into a call sequence of the above form stored at DUMMYNAME.
    We only have to set RA_REGNUM to the dummy breakpoint address
@@ -351,7 +364,7 @@ alpha_pop_frame PARAMS ((void));
 
 #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p)    \
 {									\
-  CORE_ADDR bp_address = entry_point_address ();			\
+  CORE_ADDR bp_address = CALL_DUMMY_ADDRESS ();			\
   if (bp_address == 0)							\
     error ("no place to put call");					\
   write_register (RA_REGNUM, bp_address);				\
@@ -390,6 +403,7 @@ typedef struct alpha_extra_func_info {
 
 #define EXTRA_FRAME_INFO \
   int localoff; \
+  int pc_reg; \
   alpha_extra_func_info_t proc_desc; \
   struct frame_saved_regs *saved_regs;
 
@@ -416,6 +430,58 @@ init_extra_frame_info PARAMS ((struct frame_info *));
    multiple functions with the same SP that are at different stack levels. */
 
 #define SETUP_ARBITRARY_FRAME(argc, argv) setup_arbitrary_frame (argc, argv)
-/* FIXME:  Depends on equivalence between FRAME and "struct frame_info *",
-   and equivalence between CORE_ADDR and FRAME_ADDR. */
 extern struct frame_info *setup_arbitrary_frame PARAMS ((int, CORE_ADDR *));
+
+/* This is used by heuristic_proc_start.  It should be shot it the head.  */
+#ifndef VM_MIN_ADDRESS
+#define VM_MIN_ADDRESS (CORE_ADDR)0x120000000
+#endif
+
+/* If PC is in a shared library trampoline code, return the PC
+   where the function itself actually starts.  If not, return 0.  */
+#define SKIP_TRAMPOLINE_CODE(pc)  find_solib_trampoline_target (pc)
+
+/* If the current gcc for for this target does not produce correct debugging
+   information for float parameters, both prototyped and unprototyped, then
+   define this macro.  This forces gdb to  always assume that floats are
+   passed as doubles and then converted in the callee.
+
+   For the alpha, it appears that the debug info marks the parameters as
+   floats regardless of whether the function is prototyped, but the actual
+   values are always passed in as doubles.  Thus by setting this to 1, both
+   types of calls will work. */
+
+#define COERCE_FLOAT_TO_DOUBLE 1
+
+/* Return TRUE if procedure descriptor PROC is a procedure descriptor
+   that refers to a dynamically generated sigtramp function.
+
+   OSF/1 doesn't use dynamic sigtramp functions, so this is always
+   FALSE.  */
+
+#define PROC_DESC_IS_DYN_SIGTRAMP(proc)	(0)
+#define SET_PROC_DESC_IS_DYN_SIGTRAMP(proc)
+
+/* If PC is inside a dynamically generated sigtramp function, return
+   how many bytes the program counter is beyond the start of that
+   function.  Otherwise, return a negative value.
+
+   OSF/1 doesn't use dynamic sigtramp functions, so this always
+   returns -1.  */
+
+#define DYNAMIC_SIGTRAMP_OFFSET(pc)	(-1)
+
+/* Translate a signal handler frame into the address of the sigcontext
+   structure.  */
+
+#define SIGCONTEXT_ADDR(frame) \
+  (read_memory_integer ((frame)->next ? frame->next->frame : frame->frame, 8))
+
+/* If FRAME refers to a sigtramp frame, return the address of the next
+   frame.  */
+
+#define FRAME_PAST_SIGTRAMP_FRAME(frame, pc) \
+  (alpha_osf_skip_sigtramp_frame (frame, pc))
+extern CORE_ADDR alpha_osf_skip_sigtramp_frame PARAMS ((struct frame_info *, CORE_ADDR));
+
+#endif /* TM_ALPHA_H */
diff --git a/gdb/config/alpha/tm-alphalinux.h b/gdb/config/alpha/tm-alphalinux.h
index 03b4991..f088d51 100644
--- a/gdb/config/alpha/tm-alphalinux.h
+++ b/gdb/config/alpha/tm-alphalinux.h
@@ -25,7 +25,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 /* Are we currently handling a signal ?  */
 
-extern long alpha_linux_sigtramp_offset ();
+extern long alpha_linux_sigtramp_offset PARAMS ((CORE_ADDR);
 #undef IN_SIGTRAMP
 #define IN_SIGTRAMP(pc, name)	(alpha_linux_sigtramp_offset (pc) >= 0)
 
diff --git a/gdb/config/arc/tm-arc.h b/gdb/config/arc/tm-arc.h
index 5dc4aba..c6cfb71 100644
--- a/gdb/config/arc/tm-arc.h
+++ b/gdb/config/arc/tm-arc.h
@@ -60,8 +60,6 @@ extern CORE_ADDR skip_prologue PARAMS ((CORE_ADDR, int));
 /* We don't have a reliable single step facility.
    ??? We do have a cycle single step facility, but that won't work.  */
 #define NO_SINGLE_STEP
-extern int one_stepped;
-extern void single_step PARAMS ((int));
 
 /* Given a pc value as defined by the hardware, return the real address.
    Remember that on the ARC blink contains that status register which
diff --git a/gdb/config/i386/xm-i386bsd.h b/gdb/config/i386/xm-i386bsd.h
index 8a852a2..e5c4c89 100644
--- a/gdb/config/i386/xm-i386bsd.h
+++ b/gdb/config/i386/xm-i386bsd.h
@@ -19,5 +19,4 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #define HOST_BYTE_ORDER LITTLE_ENDIAN
 
-#include <machine/limits.h>		/* for INT_MIN, to avoid "INT_MIN
-					   redefined" warnings from defs.h */
+#include <machine/limits.h>		/* for INT_MIN */
diff --git a/gdb/config/i386/xm-i386m3.h b/gdb/config/i386/xm-i386m3.h
index 615c80b..b667409 100644
--- a/gdb/config/i386/xm-i386m3.h
+++ b/gdb/config/i386/xm-i386m3.h
@@ -19,11 +19,6 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #define HOST_BYTE_ORDER LITTLE_ENDIAN
 
-/* Avoid "INT_MIN redefined" warnings -- by defining it here, exactly
-   the same as in the system <machine/machtypes.h> file.  */
-#undef	INT_MIN
-#define	INT_MIN		0x80000000
-
 /* Do implement the attach and detach commands.  */
 #define ATTACH_DETACH	1
 
diff --git a/gdb/config/i386/xm-i386mach.h b/gdb/config/i386/xm-i386mach.h
index c50da67..eb47bfb 100644
--- a/gdb/config/i386/xm-i386mach.h
+++ b/gdb/config/i386/xm-i386mach.h
@@ -19,11 +19,6 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #define HOST_BYTE_ORDER LITTLE_ENDIAN
 
-/* Avoid "INT_MIN redefined" warnings -- by defining it here, exactly
-   the same as in the system <machine/machtypes.h> file.  */
-#undef	INT_MIN
-#define	INT_MIN		0x80000000
-
 /* This is the amount to subtract from u.u_ar0
    to get the offset in the core file of the register values.  */
 
diff --git a/gdb/config/m68k/tm-m68k.h b/gdb/config/m68k/tm-m68k.h
index 4d284b5..0c98e1d 100644
--- a/gdb/config/m68k/tm-m68k.h
+++ b/gdb/config/m68k/tm-m68k.h
@@ -44,9 +44,11 @@ extern CORE_ADDR m68k_skip_prologue PARAMS ((CORE_ADDR ip));
 
 #ifdef __STDC__
 struct frame_info;
+struct frame_saved_regs;
 #endif
 
 extern CORE_ADDR m68k_saved_pc_after_call PARAMS ((struct frame_info *));
+extern void m68k_find_saved_regs PARAMS ((struct frame_info *, struct frame_saved_regs *));
 
 #define SAVED_PC_AFTER_CALL(frame) \
   m68k_saved_pc_after_call(frame)
diff --git a/gdb/config/m68k/xm-hp300bsd.h b/gdb/config/m68k/xm-hp300bsd.h
index 663717e..5e67792 100644
--- a/gdb/config/m68k/xm-hp300bsd.h
+++ b/gdb/config/m68k/xm-hp300bsd.h
@@ -25,8 +25,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #define	HOST_BYTE_ORDER	BIG_ENDIAN
 
-/* Avoid "INT_MIN redefined" preprocessor warnings by defining them here.  */
-#include <sys/param.h>
+#include <sys/param.h>	/* For INT_MIN */
 
 /* Kernel is a bit tenacious about sharing text segments, disallowing bpts.  */
 #define	ONE_PROCESS_WRITETEXT
diff --git a/gdb/config/m68k/xm-news.h b/gdb/config/m68k/xm-news.h
index 8a3250c..081337b 100644
--- a/gdb/config/m68k/xm-news.h
+++ b/gdb/config/m68k/xm-news.h
@@ -19,9 +19,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #define HOST_BYTE_ORDER BIG_ENDIAN
 
-/* A News 1800 running NEWS-OS Release 4.0.1C is said to need this.  */
-/* Avoid "INT_MIN redefined" preprocessor warnings by defining them here.  */
-#include <sys/param.h>
+#include <sys/param.h>	/* For INT_MIN */
 
 #define HAVE_WAIT_STRUCT
 
diff --git a/gdb/config/ns32k/xm-ns32km3.h b/gdb/config/ns32k/xm-ns32km3.h
index aab10a9..3d08e67 100644
--- a/gdb/config/ns32k/xm-ns32km3.h
+++ b/gdb/config/ns32k/xm-ns32km3.h
@@ -19,10 +19,5 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #define HOST_BYTE_ORDER LITTLE_ENDIAN
 
-/* Avoid "INT_MIN redefined" warnings -- by defining it here, exactly
-   the same as in the system <machine/machtypes.h> file.  */
-#undef	INT_MIN
-#define	INT_MIN		0x80000000
-
 /* Do implement the attach and detach commands.  */
 #define ATTACH_DETACH	1
diff --git a/gdb/config/pa/xm-hppab.h b/gdb/config/pa/xm-hppab.h
index a7c024b..463c1e0 100644
--- a/gdb/config/pa/xm-hppab.h
+++ b/gdb/config/pa/xm-hppab.h
@@ -26,11 +26,6 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #include "pa/xm-pa.h"
 
-/* Avoid "INT_MIN redefined" warnings -- by defining it here, exactly
-   the same as in the system <machine/machtypes.h> file.  */
-#undef  INT_MIN
-#define INT_MIN         0x80000000
-
 #ifndef SEEK_SET
 #  define SEEK_SET    0		/* Set file pointer to "offset" */
 #  define SEEK_CUR    1		/* Set file pointer to current plus "offset" */
diff --git a/gdb/config/pa/xm-hppah.h b/gdb/config/pa/xm-hppah.h
index 407bf5f..2cd47dd 100644
--- a/gdb/config/pa/xm-hppah.h
+++ b/gdb/config/pa/xm-hppah.h
@@ -25,11 +25,6 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #include "pa/xm-pa.h"
 
-/* Avoid "INT_MIN redefined" warnings -- by defining it here, exactly
-   the same as in the system <machine/machtypes.h> file.  */
-#undef  INT_MIN
-#define INT_MIN         0x80000000
-
 #define USG
 
 #ifndef __STDC__
diff --git a/gdb/config/sparc/tm-sparc.h b/gdb/config/sparc/tm-sparc.h
index 444bb43..663f6d9 100644
--- a/gdb/config/sparc/tm-sparc.h
+++ b/gdb/config/sparc/tm-sparc.h
@@ -336,6 +336,10 @@ sparc_extract_struct_value_address PARAMS ((char [REGISTER_BYTES]));
    have been stashed (the frame is of variable size, so their location
    is not fixed), it's convenient to record them in the frame info.  */
 
+#ifdef __STDC__
+struct frame_info;
+#endif
+
 #define EXTRA_FRAME_INFO  \
   CORE_ADDR bottom;  \
   int flat;  \
@@ -348,7 +352,7 @@ sparc_extract_struct_value_address PARAMS ((char [REGISTER_BYTES]));
 
 #define INIT_EXTRA_FRAME_INFO(fromleaf, fci) \
   sparc_init_extra_frame_info (fromleaf, fci)
-extern void sparc_init_extra_frame_info ();
+extern void sparc_init_extra_frame_info PARAMS((int, struct frame_info *));
 
 #define	PRINT_EXTRA_FRAME_INFO(fi) \
   { \
@@ -357,10 +361,6 @@ extern void sparc_init_extra_frame_info ();
                        (fi)->pc_addr, (fi)->fp_addr); \
   }
 
-#ifdef __STDC__
-struct frame_info;
-#endif
-
 #define FRAME_CHAIN(thisframe) (sparc_frame_chain (thisframe))
 extern CORE_ADDR sparc_frame_chain PARAMS ((struct frame_info *));
 
@@ -390,7 +390,7 @@ extern CORE_ADDR sparc_frame_chain PARAMS ((struct frame_info *));
 /* Where is the PC for a specific frame */
 
 #define FRAME_SAVED_PC(FRAME) sparc_frame_saved_pc (FRAME)
-extern CORE_ADDR sparc_frame_saved_pc ();
+extern CORE_ADDR sparc_frame_saved_pc PARAMS ((struct frame_info *));
 
 /* If the argument is on the stack, it will be here.  */
 #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
@@ -478,7 +478,7 @@ extern CORE_ADDR sparc_frame_saved_pc ();
 #define PUSH_DUMMY_FRAME	sparc_push_dummy_frame ()
 #define POP_FRAME	sparc_pop_frame ()
 
-void sparc_push_dummy_frame (), sparc_pop_frame ();
+void sparc_push_dummy_frame PARAMS ((void)), sparc_pop_frame PARAMS ((void));
 /* This sequence of words is the instructions
 
    save %sp,-0x140,%sp
@@ -598,7 +598,6 @@ arguments.  */
 /* Sparc has no reliable single step ptrace call */
 
 #define NO_SINGLE_STEP 1
-extern void single_step PARAMS ((int));
 
 /* We need more arguments in a frame specification for the
    "frame" or "info frame" command.  */
diff --git a/gdb/config/tm-sysv4.h b/gdb/config/tm-sysv4.h
index 2c08541..5f7da95 100644
--- a/gdb/config/tm-sysv4.h
+++ b/gdb/config/tm-sysv4.h
@@ -27,7 +27,6 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
    (e.g. on Irix5).  */
 
 #define IN_SOLIB_CALL_TRAMPOLINE(pc, name) in_plt_section((pc), (name))
-extern int in_plt_section PARAMS ((CORE_ADDR, char *));
 
 /* If PC is in a shared library trampoline code, return the PC
    where the function itself actually starts.  If not, return 0.  */
diff --git a/gdb/config/xm-lynx.h b/gdb/config/xm-lynx.h
index 6f19abd..d73e2c1 100644
--- a/gdb/config/xm-lynx.h
+++ b/gdb/config/xm-lynx.h
@@ -17,6 +17,4 @@ You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
-/* for INT_MIN, to avoid "INT_MIN redefined" warnings from defs.h */
-
-#include <limits.h>
+#include <limits.h>	/* for INT_MIN */
diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index 19c5aa3..036c89a 100644
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,3 +1,8 @@
+Tue Jul 23 10:06:20 1996  Fred Fish  <fnf@cygnus.com>
+
+	* gdbint.texinfo (NO_SINGLE_STEP): Document that single_step takes
+	a target_signal as arg type, not a pid.
+
 Fri Jul 12 11:10:05 1996  Stu Grossman  (grossman@critters.cygnus.com)
 
 	* gdb.texinfo:  Document `set assembly-language'.
diff --git a/gdb/doc/gdbint.texinfo b/gdb/doc/gdbint.texinfo
index df4e6da..ed723f4 100644
--- a/gdb/doc/gdbint.texinfo
+++ b/gdb/doc/gdbint.texinfo
@@ -2197,7 +2197,7 @@ remote-adapt.c
 @item NO_SINGLE_STEP
 Define this if the target does not support single-stepping.
 If this is defined, you must supply, in @code{*-tdep.c}, the function
-@code{single_step}, which takes a pid as argument and returns nothing.
+@code{single_step}, which takes a target_signal as argument and returns nothing.
 It must insert breakpoints at each possible destinations of the next
 instruction.  See @code{sparc-tdep.c} and @code{rs6000-tdep.c}
 for examples.