-/* 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, 1998, 1999, 2000, 2002
+ Free Software Foundation, Inc.
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ 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. */
+ 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. */
+#ifndef TM_ALPHA_H
+#define TM_ALPHA_H
+
+#include "regcache.h"
#include "bfd.h"
#include "coff/sym.h" /* Needed for PDR below. */
#include "coff/symconst.h"
+struct frame_info;
+struct type;
+struct value;
+struct symbol;
+
#if !defined (TARGET_BYTE_ORDER)
-#define TARGET_BYTE_ORDER LITTLE_ENDIAN
+#define TARGET_BYTE_ORDER BFD_ENDIAN_LITTLE
#endif
/* Redefine some target bit sizes from the default. */
-#undef TARGET_LONG_BIT
#define TARGET_LONG_BIT 64
-#undef TARGET_LONG_LONG_BIT
#define TARGET_LONG_LONG_BIT 64
-#undef TARGET_PTR_BIT
#define TARGET_PTR_BIT 64
/* Floating point is IEEE compliant */
-#define IEEE_FLOAT
+#define IEEE_FLOAT (1)
/* Number of traps that happen between exec'ing the shell
* to run an inferior, and when we finally get to
/* Advance PC across any function entry prologue instructions
to reach some "real" code. */
-#define SKIP_PROLOGUE(pc) pc = alpha_skip_prologue(pc, 0)
-extern CORE_ADDR alpha_skip_prologue PARAMS ((CORE_ADDR addr, int lenient));
+#define SKIP_PROLOGUE(pc) (alpha_skip_prologue(pc, 0))
+extern CORE_ADDR alpha_skip_prologue (CORE_ADDR addr, int lenient);
/* Immediately after a function call, return the saved pc.
Can't always go through the frames for this because on some machines
some instructions. */
#define SAVED_PC_AFTER_CALL(frame) alpha_saved_pc_after_call(frame)
-#ifdef __STDC__
-struct frame_info;
-#endif
-extern CORE_ADDR
-alpha_saved_pc_after_call PARAMS ((struct frame_info *));
+extern CORE_ADDR alpha_saved_pc_after_call (struct frame_info *);
/* Are we currently handling a signal ? */
-#define IN_SIGTRAMP(pc, name) ((name) && STREQ ("__sigtramp", (name)))
+#define IN_SIGTRAMP(pc, name) alpha_osf_in_sigtramp ((pc), (name))
+extern int alpha_osf_in_sigtramp (CORE_ADDR, char *);
/* Stack grows downward. */
-#define INNER_THAN <
+#define INNER_THAN(lhs,rhs) core_addr_lessthan ((lhs), (rhs))
-#define BREAKPOINT {0x80, 0, 0, 0} /* call_pal bpt */
+#define BREAKPOINT {0x80, 0, 0, 0} /* call_pal bpt */
/* Amount PC must be decremented by after a breakpoint.
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)
+/* 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. */
-/* Return 1 if P points to an invalid floating point value. */
+#define REGISTER_SIZE 8
-#define INVALID_FLOAT(p,l) 0
+/* Number of machine registers */
-/* Say how long (all) registers are.
- This is unused for the alpha, but the define is necessary. */
+#define NUM_REGS 66
-#define REGISTER_TYPE long
-/* Number of machine registers */
+/* Return the name of register REGNO. */
-#define NUM_REGS 66
+#define REGISTER_NAME(regno) alpha_register_name ((regno))
+extern char *alpha_register_name (int);
-/* Initializer for an array of names of registers.
- There should be NUM_REGS strings in this initializer. */
-
-#define REGISTER_NAMES \
- { "v0", "t0", "t1", "t2", "t3", "t4", "t5", "t6", \
- "t7", "s0", "s1", "s2", "s3", "s4", "s5", "fp", \
- "a0", "a1", "a2", "a3", "a4", "a5", "t8", "t9", \
- "t10", "t11", "ra", "t12", "at", "gp", "sp", "zero", \
- "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
- "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
- "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",\
- "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",\
- "pc", "vfp", \
- }
/* Register numbers of various important registers.
Note that most of these values are "real" register numbers,
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 */
#define ZERO_REGNUM 31 /* Read-only register, always 0 */
-#define FP0_REGNUM 32 /* Floating point register 0 */
-#define FPA0_REGNUM 48 /* First float arg during a subr call */
+#define FP0_REGNUM 32 /* Floating point register 0 */
+#define FPA0_REGNUM 48 /* First float arg during a subr call */
+#define FPCR_REGNUM 63 /* Floating point control register */
#define PC_REGNUM 64 /* Contains program counter */
#define FP_REGNUM 65 /* Virtual frame pointer */
#define CANNOT_FETCH_REGISTER(regno) \
- ((regno) == FP_REGNUM || (regno) == ZERO_REGNUM)
+ alpha_cannot_fetch_register ((regno))
+extern int alpha_cannot_fetch_register (int);
+
#define CANNOT_STORE_REGISTER(regno) \
- ((regno) == FP_REGNUM || (regno) == ZERO_REGNUM)
+ alpha_cannot_store_register ((regno))
+extern int alpha_cannot_store_register (int);
/* Total amount of space needed to store our copies of the machine's
register state, the array `registers'. */
#define MAX_REGISTER_VIRTUAL_SIZE 8
/* Nonzero if register N requires conversion
- from raw format to virtual format. */
-
-#define REGISTER_CONVERTIBLE(N) 0
-
-/* Convert data from raw format for register REGNUM
- to virtual format for register REGNUM. */
-
-#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
- memcpy ((TO), (FROM), 8);
+ from raw format to virtual format.
+ The alpha needs a conversion between register and memory format if
+ the register is a floating point register and
+ memory format is float, as the register format must be double
+ or
+ memory format is an integer with 4 bytes or less, as the representation
+ of integers in floating point registers is different. */
+
+#define REGISTER_CONVERTIBLE(N) alpha_register_convertible ((N))
+extern int alpha_register_convertible (int);
+
+/* Convert data from raw format for register REGNUM in buffer FROM
+ to virtual format with type TYPE in buffer TO. */
+
+#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM, TYPE, FROM, TO) \
+ alpha_register_convert_to_virtual (REGNUM, TYPE, FROM, TO)
+extern void
+alpha_register_convert_to_virtual (int, struct type *, char *, char *);
-/* Convert data from virtual format for register REGNUM
- to raw format for register REGNUM. */
+/* Convert data from virtual format with type TYPE in buffer FROM
+ to raw format for register REGNUM in buffer TO. */
-#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \
- memcpy ((TO), (FROM), 8);
+#define REGISTER_CONVERT_TO_RAW(TYPE, REGNUM, FROM, TO) \
+ alpha_register_convert_to_raw (TYPE, REGNUM, FROM, TO)
+extern void
+alpha_register_convert_to_raw (struct type *, int, char *, char *);
/* Return the GDB type object for the "standard" data type
of data in register N. */
-#define REGISTER_VIRTUAL_TYPE(N) \
- (((N) >= FP0_REGNUM && (N) < FP0_REGNUM+32) \
- ? builtin_type_double : builtin_type_long) \
+#define REGISTER_VIRTUAL_TYPE(N) alpha_register_virtual_type ((N))
+extern struct type * alpha_register_virtual_type (int);
/* Store the address of the place in which to copy the structure the
subroutine will return. Handled by alpha_push_arguments. */
-#define STORE_STRUCT_RETURN(addr, sp) /**/
+#define STORE_STRUCT_RETURN(addr, sp) \
+ alpha_store_struct_return ((addr), (sp))
+extern void alpha_store_struct_return (CORE_ADDR, CORE_ADDR);
+/**/
/* Extract from an array REGBUF containing the (raw) register state
a function return value of type TYPE, and copy that, in virtual format,
#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
alpha_extract_return_value(TYPE, REGBUF, VALBUF)
-#ifdef __STDC__
-struct type;
-#endif
-extern void
-alpha_extract_return_value PARAMS ((struct type *, char *, char *));
+extern void alpha_extract_return_value (struct type *, char *, char *);
/* Write into appropriate registers a function return value
of type TYPE, given in virtual format. */
#define STORE_RETURN_VALUE(TYPE,VALBUF) \
alpha_store_return_value(TYPE, VALBUF)
-extern void
-alpha_store_return_value PARAMS ((struct type *, char *));
+extern void alpha_store_return_value (struct type *, char *);
/* Extract from an array REGBUF containing the (raw) register state
the address in which a function should return its structure value,
on it. */
#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
- (extract_address (REGBUF + REGISTER_BYTE (V0_REGNUM), \
- REGISTER_RAW_SIZE (V0_REGNUM)))
+ alpha_extract_struct_value_address (REGBUF)
+extern CORE_ADDR alpha_extract_struct_value_address (char *);
/* Structures are returned by ref in extra arg0 */
-#define USE_STRUCT_CONVENTION(gcc_p, type) 1
-
+#define USE_STRUCT_CONVENTION(gcc_p, type) \
+ alpha_use_struct_convention ((gcc_p), (type))
+extern int alpha_use_struct_convention (int, struct type *);
\f
+
/* Describe the pointer in each stack frame to the previous stack frame
(its caller). */
/* 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) alpha_frame_chain (thisframe)
+extern CORE_ADDR alpha_frame_chain (struct frame_info *);
/* Define other aspects of the stack frame. */
-/* A macro that tells us whether the function invocation represented
- by FI does not have a frame on the stack associated with it. If it
- does not, FRAMELESS is set to 1, else 0. */
+/* An expression that tells us whether the function invocation represented
+ by FI does not have a frame on the stack associated with it. */
/* We handle this differently for alpha, and maybe we should not */
-#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) {(FRAMELESS) = 0;}
+#define FRAMELESS_FUNCTION_INVOCATION(FI) (0)
/* Saved Pc. */
#define FRAME_SAVED_PC(FRAME) (alpha_frame_saved_pc(FRAME))
-extern CORE_ADDR
-alpha_frame_saved_pc PARAMS ((struct frame_info *));
+extern CORE_ADDR alpha_frame_saved_pc (struct frame_info *);
+
+/* The alpha has two different virtual pointers for arguments and locals.
+
+ The virtual argument pointer is pointing to the bottom of the argument
+ transfer area, which is located immediately below the virtual frame
+ pointer. Its size is fixed for the native compiler, it is either zero
+ (for the no arguments case) or large enough to hold all argument registers.
+ gcc uses a variable sized argument transfer area. As it has
+ to stay compatible with the native debugging tools it has to use the same
+ virtual argument pointer and adjust the argument offsets accordingly.
+
+ The virtual local pointer is localoff bytes below the virtual frame
+ pointer, the value of localoff is obtained from the PDR. */
-/* The offsets for the arguments and locals are off a virtual pointer
- to the argument transfer area. The argument transfer area is immediately
- below the virtual frame pointer, its size is in localoff from the PDR. */
+#define ALPHA_NUM_ARG_REGS 6
-#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame - (fi)->localoff)
+#define FRAME_ARGS_ADDRESS(fi) alpha_frame_args_address ((fi))
+extern CORE_ADDR alpha_frame_args_address (struct frame_info *);
-#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame - (fi)->localoff)
+#define FRAME_LOCALS_ADDRESS(fi) alpha_frame_locals_address ((fi))
+extern CORE_ADDR alpha_frame_locals_address (struct frame_info *);
/* Return number of args passed to a frame.
Can return -1, meaning no way to tell. */
-#define FRAME_NUM_ARGS(num, fi) ((num) = -1)
+#define FRAME_NUM_ARGS(fi) (-1)
/* Return number of bytes at start of arglist that are not really args. */
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)
-
+#define FRAME_INIT_SAVED_REGS(frame_info) \
+ alpha_frame_init_saved_regs (frame_info)
+extern void alpha_frame_init_saved_regs (struct frame_info *);
\f
+
/* Things needed for making the inferior call functions. */
#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
- sp = alpha_push_arguments(nargs, args, sp, struct_return, struct_addr)
-#ifdef __STDC__
-struct value;
-#endif
+ (alpha_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr)))
extern CORE_ADDR
-alpha_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int, CORE_ADDR));
+alpha_push_arguments (int, struct value **, CORE_ADDR, int, CORE_ADDR);
/* Push an empty stack frame, to record the current PC, etc. */
#define PUSH_DUMMY_FRAME alpha_push_dummy_frame()
-extern void
-alpha_push_dummy_frame PARAMS ((void));
+extern void alpha_push_dummy_frame (void);
/* Discard from the stack the innermost frame, restoring all registers. */
#define POP_FRAME alpha_pop_frame()
-extern void
-alpha_pop_frame PARAMS ((void));
+extern void alpha_pop_frame (void);
/* Alpha OSF/1 inhibits execution of code on the stack.
But there is no need for a dummy on the alpha. PUSH_ARGUMENTS
#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 (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
and T12_REGNUM (the `procedure value register') to the function address. */
-#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
-{ \
- CORE_ADDR bp_address = entry_point_address (); \
- if (bp_address == 0) \
- error ("no place to put call"); \
- write_register (RA_REGNUM, bp_address); \
- write_register (T12_REGNUM, fun); \
-}
+#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
+ alpha_fix_call_dummy ((dummyname), (pc), (fun), (nargs), (args), \
+ (type), (gcc_p))
+extern void alpha_fix_call_dummy (char *, CORE_ADDR, CORE_ADDR, int,
+ struct value **, struct type *, int);
/* There's a mess in stack frame creation. See comments in blockframe.c
near reference to INIT_FRAME_PC_FIRST. */
-#define INIT_FRAME_PC(fromleaf, prev) /* nada */
+#define INIT_FRAME_PC(fromleaf, prev) init_frame_pc_noop ((fromleaf), (prev))
#define INIT_FRAME_PC_FIRST(fromleaf, prev) \
- (prev)->pc = ((fromleaf) ? SAVED_PC_AFTER_CALL ((prev)->next) : \
- (prev)->next ? FRAME_SAVED_PC ((prev)->next) : read_pc ());
+ alpha_init_frame_pc_first ((fromleaf), (prev))
+extern void alpha_init_frame_pc_first (int, struct frame_info *);
/* Special symbol found in blocks associated with routines. We can hang
alpha_extra_func_info_t's off of this. */
#define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
+extern void ecoff_relocate_efi (struct symbol *, CORE_ADDR);
/* Specific information about a procedure.
This overlays the ALPHA's PDR records,
alpharead.c (ab)uses this to save memory */
-typedef struct alpha_extra_func_info {
- long numargs; /* number of args to procedure (was iopt) */
- PDR pdr; /* Procedure descriptor record */
-} *alpha_extra_func_info_t;
+typedef struct alpha_extra_func_info
+ {
+ long numargs; /* number of args to procedure (was iopt) */
+ PDR pdr; /* Procedure descriptor record */
+ }
+ *alpha_extra_func_info_t;
/* Define the extra_func_info that mipsread.c needs.
FIXME: We should define our own PDR interface, perhaps in a separate
#define mips_extra_func_info alpha_extra_func_info
#define mips_extra_func_info_t alpha_extra_func_info_t
-#define EXTRA_FRAME_INFO \
- int localoff; \
- alpha_extra_func_info_t proc_desc; \
- struct frame_saved_regs *saved_regs;
-#define INIT_EXTRA_FRAME_INFO(fromleaf, fci) init_extra_frame_info(fci)
-extern void
-init_extra_frame_info PARAMS ((struct frame_info *));
-
-#define PRINT_EXTRA_FRAME_INFO(fi) \
- { \
- if (fi && fi->proc_desc && fi->proc_desc->pdr.framereg < NUM_REGS) \
- printf_filtered (" frame pointer is at %s+%d\n", \
- reg_names[fi->proc_desc->pdr.framereg], \
- fi->proc_desc->pdr.frameoffset); \
- }
+#define INIT_EXTRA_FRAME_INFO(fromleaf, fci) \
+ alpha_init_extra_frame_info(fromleaf, fci)
+extern void alpha_init_extra_frame_info (int, struct frame_info *);
+
+#define PRINT_EXTRA_FRAME_INFO(fi) alpha_print_extra_frame_info ((fi))
+extern void alpha_print_extra_frame_info (struct frame_info *);
+
/* It takes two values to specify a frame on the ALPHA. Sigh.
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 *));
+extern struct frame_info *setup_arbitrary_frame (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(formal, actual) (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 (struct frame_info *,
+ CORE_ADDR);
+
+/* Single step based on where the current instruction will take us. */
+extern void alpha_software_single_step (enum target_signal, int);
+
+#endif /* TM_ALPHA_H */
projects / deliverable / binutils-gdb.git / blobdiff