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Diffstat (limited to 'gdb/config/alpha/tm-alpha.h')
| -rw-r--r-- | gdb/config/alpha/tm-alpha.h | 476 |
1 files changed, 0 insertions, 476 deletions
diff --git a/gdb/config/alpha/tm-alpha.h b/gdb/config/alpha/tm-alpha.h deleted file mode 100644 index b6c5ef955dc..00000000000 --- a/gdb/config/alpha/tm-alpha.h +++ /dev/null @@ -1,476 +0,0 @@ -/* 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 - Free Software Foundation, Inc. - - 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 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., 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. */ -#include "coff/symconst.h" - -struct frame_info; -struct type; -struct value; -struct symbol; - -#if !defined (TARGET_BYTE_ORDER) -#define TARGET_BYTE_ORDER LITTLE_ENDIAN -#endif - -/* Redefine some target bit sizes from the default. */ - -#define TARGET_LONG_BIT 64 -#define TARGET_LONG_LONG_BIT 64 -#define TARGET_PTR_BIT 64 - -/* Floating point is IEEE compliant */ -#define IEEE_FLOAT (1) - -/* 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, 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 - 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) ((name) && STREQ ("__sigtramp", (name))) - -/* Stack grows downward. */ - -#define INNER_THAN(lhs,rhs) ((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 - -/* 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", "fpcr",\ - "pc", "vfp", \ - } - -/* 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) \ - ((regno) == FP_REGNUM || (regno) == ZERO_REGNUM) -#define CANNOT_STORE_REGISTER(regno) \ - ((regno) == FP_REGNUM || (regno) == ZERO_REGNUM) - -/* 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) ((N) * 8) - -/* 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) 8 - -/* 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) 8 - -/* 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) ((N) >= FP0_REGNUM && (N) < FP0_REGNUM + 31) - -/* 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) \ - (((N) >= FP0_REGNUM && (N) < FP0_REGNUM+31) \ - ? builtin_type_double : builtin_type_long) \ - -/* 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) -/**/ - -/* 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) \ - (extract_address (REGBUF + REGISTER_BYTE (V0_REGNUM), \ - REGISTER_RAW_SIZE (V0_REGNUM))) - -/* Structures are returned by ref in extra arg0 */ -#define USE_STRUCT_CONVENTION(gcc_p, type) 1 - - -/* 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) (CORE_ADDR) 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) (0) - -/* 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) ((fi)->frame - (ALPHA_NUM_ARG_REGS * 8)) - -#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame - (fi)->localoff) - -/* Return number of args passed to a frame. - Can return -1, meaning no way to tell. */ - -#define FRAME_NUM_ARGS(fi) (-1) - -/* 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. */ - -extern void alpha_find_saved_regs (struct frame_info *); - -#define FRAME_INIT_SAVED_REGS(frame_info) \ - do { \ - if ((frame_info)->saved_regs == NULL) \ - alpha_find_saved_regs (frame_info); \ - (frame_info)->saved_regs[SP_REGNUM] = (frame_info)->frame; \ - } while (0) - - -/* 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 { 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 = CALL_DUMMY_ADDRESS (); \ - if (bp_address == 0) \ - error ("no place to put call"); \ - write_register (RA_REGNUM, bp_address); \ - write_register (T12_REGNUM, fun); \ -} - -/* 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_FIRST(fromleaf, prev) \ - (prev)->pc = ((fromleaf) ? SAVED_PC_AFTER_CALL ((prev)->next) : \ - (prev)->next ? FRAME_SAVED_PC ((prev)->next) : read_pc ()); - -/* 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; - -/* Define the extra_func_info that mipsread.c needs. - FIXME: We should define our own PDR interface, perhaps in a separate - header file. This would get rid of the <bfd.h> inclusion in all sources - and would abstract the mips/alpha interface from ecoff. */ -#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; \ - int pc_reg; \ - alpha_extra_func_info_t proc_desc; - -#define INIT_EXTRA_FRAME_INFO(fromleaf, fci) init_extra_frame_info(fci) -extern void init_extra_frame_info (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+%ld\n", \ - REGISTER_NAME (fi->proc_desc->pdr.framereg), \ - fi->proc_desc->pdr.frameoffset); \ - } - -/* 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 - a frame. The PC is looked up to see what function it's in; symbol - information from that function tells us which register is the frame - pointer base, and what offset from there is the "virtual frame pointer". - (This is usually an offset from SP.) FIXME -- this should be cleaned - 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) (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); - -#endif /* TM_ALPHA_H */ |