diff options
Diffstat (limited to 'contrib/gdb/gdb/config/alpha/tm-alpha.h')
| -rw-r--r-- | contrib/gdb/gdb/config/alpha/tm-alpha.h | 409 |
1 files changed, 6 insertions, 403 deletions
diff --git a/contrib/gdb/gdb/config/alpha/tm-alpha.h b/contrib/gdb/gdb/config/alpha/tm-alpha.h index 58412d0..0b7878c 100644 --- a/contrib/gdb/gdb/config/alpha/tm-alpha.h +++ b/contrib/gdb/gdb/config/alpha/tm-alpha.h @@ -1,7 +1,7 @@ /* Definitions to make GDB run on an Alpha box under OSF1. This is also used by the Alpha/Netware and Alpha GNU/Linux targets. - Copyright 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002 Free + Copyright 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002, 2004 Free Software Foundation, Inc. This file is part of GDB. @@ -24,353 +24,21 @@ #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; -/* Redefine some target bit sizes from the default. */ - -#define TARGET_LONG_BIT 64 -#define TARGET_LONG_LONG_BIT 64 -#define TARGET_PTR_BIT 64 - -/* Number of traps that happen between exec'ing the shell - * to run an inferior, and when we finally get to - * the inferior code. This is 2 on most implementations. - */ -#define START_INFERIOR_TRAPS_EXPECTED 3 - -/* Offset from address of function to start of its code. - Zero on most machines. */ - -#define FUNCTION_START_OFFSET 0 - -/* Advance PC across any function entry prologue instructions - to reach some "real" code. */ - -#define SKIP_PROLOGUE(pc) alpha_skip_prologue((pc)) -extern CORE_ADDR alpha_skip_prologue (CORE_ADDR addr); - -/* Immediately after a function call, return the saved pc. - Can't always go through the frames for this because on some machines - the new frame is not set up until the new function executes - some instructions. */ - -#define SAVED_PC_AFTER_CALL(frame) alpha_saved_pc_after_call(frame) -extern CORE_ADDR alpha_saved_pc_after_call (struct frame_info *); - -/* Are we currently handling a signal ? */ - -#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(lhs,rhs) core_addr_lessthan ((lhs), (rhs)) - -#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 - -/* 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_SIZE 8 - -/* Number of machine registers */ - -#define NUM_REGS 66 - - -/* Return the name of register REGNO. */ - -#define REGISTER_NAME(regno) alpha_register_name ((regno)) -extern char *alpha_register_name (int); - - -/* Register numbers of various important registers. - Note that most of these values are "real" register numbers, - and correspond to the general registers of the machine, - and FP_REGNUM is a "phony" register number which is too large - to be an actual register number as far as the user is concerned - 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 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) \ - alpha_cannot_fetch_register ((regno)) -extern int alpha_cannot_fetch_register (int); - -#define CANNOT_STORE_REGISTER(regno) \ - 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 REGISTER_BYTES (NUM_REGS * 8) - -/* Index within `registers' of the first byte of the space for - register N. */ - -#define REGISTER_BYTE(N) alpha_register_byte ((N)) -extern int alpha_register_byte (int); - -/* Number of bytes of storage in the actual machine representation - for register N. On Alphas, all regs are 8 bytes. */ - -#define REGISTER_RAW_SIZE(N) alpha_register_raw_size ((N)) -extern int alpha_register_raw_size (int); - -/* Number of bytes of storage in the program's representation - for register N. On Alphas, all regs are 8 bytes. */ - -#define REGISTER_VIRTUAL_SIZE(N) alpha_register_virtual_size ((N)) -extern int alpha_register_virtual_size (int); - -/* Largest value REGISTER_RAW_SIZE can have. */ - -#define MAX_REGISTER_RAW_SIZE 8 - -/* Largest value REGISTER_VIRTUAL_SIZE can have. */ - -#define MAX_REGISTER_VIRTUAL_SIZE 8 - -/* Nonzero if register N requires conversion - 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 with type TYPE in buffer FROM - to raw format for register REGNUM in buffer TO. */ - -#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) 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) \ - 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, - into VALBUF. */ - -#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ - alpha_extract_return_value(TYPE, REGBUF, VALBUF) -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 (struct type *, char *); - -/* Extract from an array REGBUF containing the (raw) register state - the address in which a function should return its structure value, - as a CORE_ADDR (or an expression that can be used as one). */ -/* The address is passed in a0 upon entry to the function, but when - the function exits, the compiler has copied the value to v0. This - convention is specified by the System V ABI, so I think we can rely - on it. */ - -#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \ - 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) \ - alpha_use_struct_convention ((gcc_p), (type)) -extern int alpha_use_struct_convention (int, struct type *); - - -/* 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) alpha_frame_chain (thisframe) -extern CORE_ADDR alpha_frame_chain (struct frame_info *); - -/* Define other aspects of the stack frame. */ - - -/* 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) \ - generic_frameless_function_invocation_not ((FI)) - -/* Saved Pc. */ - -#define FRAME_SAVED_PC(FRAME) alpha_frame_saved_pc(FRAME) -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. */ - -#define ALPHA_NUM_ARG_REGS 6 - -#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) 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(fi) frame_num_args_unknown ((fi)) - -/* Return number of bytes at start of arglist that are not really args. */ - -#define FRAME_ARGS_SKIP 0 - -/* Put here the code to store, into a struct frame_saved_regs, - the addresses of the saved registers of frame described by FRAME_INFO. - This includes special registers such as pc and fp saved in special - 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_INIT_SAVED_REGS(frame_info) \ - alpha_frame_init_saved_regs (frame_info) -extern void alpha_frame_init_saved_regs (struct frame_info *); - - -/* Things needed for making the inferior call functions. */ - -#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \ - (alpha_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr))) -extern 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 (void); - -/* Discard from the stack the innermost frame, restoring all registers. */ - -#define POP_FRAME alpha_pop_frame() -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 - takes care of all argument handling and bp_call_dummy takes care - of stopping the dummy. */ - -#define CALL_DUMMY_LOCATION AT_ENTRY_POINT - -/* 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_P (1) - -#define CALL_DUMMY_WORDS alpha_call_dummy_words -extern LONGEST alpha_call_dummy_words[]; - -#define SIZEOF_CALL_DUMMY_WORDS 0 - -#define CALL_DUMMY_START_OFFSET (0) - -#define CALL_DUMMY_BREAKPOINT_OFFSET (0) - -#define CALL_DUMMY_ADDRESS() alpha_call_dummy_address() -extern CORE_ADDR alpha_call_dummy_address (void); - -/* 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) \ - 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) init_frame_pc_noop ((fromleaf), (prev)) - -#define INIT_FRAME_PC_FIRST(fromleaf, prev) \ - 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); +#define RA_REGNUM 26 /* XXXJRT needed by mdebugread.c */ + /* Specific information about a procedure. This overlays the ALPHA's PDR records, alpharead.c (ab)uses this to save memory */ @@ -389,15 +57,6 @@ typedef struct alpha_extra_func_info #define mips_extra_func_info alpha_extra_func_info #define mips_extra_func_info_t alpha_extra_func_info_t - -#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. In fact, at the moment, the *PC* is the primary value that sets up @@ -408,64 +67,8 @@ extern void alpha_print_extra_frame_info (struct frame_info *); up so that the primary value is the SP, and the PC is used to disambiguate multiple functions with the same SP that are at different stack levels. */ -#define SETUP_ARBITRARY_FRAME(argc, argv) setup_arbitrary_frame (argc, argv) -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) \ - standard_coerce_float_to_double ((formal), (actual)) - -/* 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); +#define SETUP_ARBITRARY_FRAME(argc, argv) \ + alpha_setup_arbitrary_frame (argc, argv) +extern struct frame_info *alpha_setup_arbitrary_frame (int, CORE_ADDR *); #endif /* TM_ALPHA_H */ |
