-/* 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.
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. */
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 */
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 */
/* 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. */
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)
\f
/* Things needed for making the inferior call functions. */
#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
#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); \
#define EXTRA_FRAME_INFO \
int localoff; \
+ int pc_reg; \
alpha_extra_func_info_t proc_desc; \
struct frame_saved_regs *saved_regs;
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 */
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; \
#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) \
{ \
(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 *));
/* 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)
#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
/* 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. */
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