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Diffstat (limited to 'gdb/tm-irix3.h')
| -rw-r--r-- | gdb/tm-irix3.h | 317 |
1 files changed, 0 insertions, 317 deletions
diff --git a/gdb/tm-irix3.h b/gdb/tm-irix3.h index a227aa4..e69de29 100644 --- a/gdb/tm-irix3.h +++ b/gdb/tm-irix3.h @@ -1,317 +0,0 @@ -/* Target machine description for SGI Iris under Irix, for GDB. - Copyright 1990, 1991, 1992, 1993 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#include "coff/sym.h" /* Needed for PDR below. */ -#include "coff/symconst.h" - -#define TARGET_BYTE_ORDER BIG_ENDIAN - -/* Floating point is IEEE compliant */ -#define IEEE_FLOAT - -/* SGI's assembler doesn't grok dollar signs in identifiers. - So we use dots instead. This item must be coordinated with G++. */ -#undef CPLUS_MARKER -#define CPLUS_MARKER '.' - -/* 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) pc = mips_skip_prologue(pc) - -/* 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) read_register(RA_REGNUM) - -/* Are we currently handling a signal */ - -#define IN_SIGTRAMP(pc, name) in_sigtramp(pc, name) - -/* Address of end of stack space. */ - -#define STACK_END_ADDR (0x7ffff000) - -/* Stack grows downward. */ - -#define INNER_THAN < - -#define BREAKPOINT {0, 0x5, 0, 0xd} - -/* Amount PC must be decremented by after a breakpoint. - This is often the number of bytes in BREAKPOINT - but not always. */ - -#define DECR_PC_AFTER_BREAK 0 - -/* Nonzero if instruction at PC is a return instruction. "j ra" on mips. */ - -#define ABOUT_TO_RETURN(pc) (read_memory_integer (pc, 4) == 0x3e00008) - -/* Return 1 if P points to an invalid floating point value. */ - -#define INVALID_FLOAT(p,l) isa_NAN(p,l) - -/* Say how long (all) registers are. */ - -#define REGISTER_TYPE long - -/* Number of machine registers */ - -#define NUM_REGS 71 - -/* Initializer for an array of names of registers. - There should be NUM_REGS strings in this initializer. */ - -#define REGISTER_NAMES \ - { "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3", \ - "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", \ - "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", \ - "t8", "t9", "k0", "k1", "gp", "sp", "fp", "ra", \ - "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", "cause", "bad", "hi", "lo", "fsr", "fir" \ - } - -/* Register numbers of various important registers. - Note that some of these values are "real" register numbers, - and correspond to the general registers of the machine, - and some are "phony" register numbers which are too large - to be actual register numbers as far as the user is concerned - but do serve to get the desired values when passed to read_register. */ - -#define ZERO_REGNUM 0 /* read-only register, always 0 */ -#define A0_REGNUM 4 /* Loc of first arg during a subr call */ -#define SP_REGNUM 29 /* Contains address of top of stack */ -#define FP_REGNUM 30 /* Pseudo register that contains true address of executing stack frame */ -#define RA_REGNUM 31 /* Contains return address value */ -#define FP0_REGNUM 32 /* Floating point register 0 (single float) */ -#define PC_REGNUM 64 /* Contains program counter */ -#define PS_REGNUM 65 /* Contains processor status */ -#define HI_REGNUM 67 /* Multiple/divide temp */ -#define LO_REGNUM 68 /* ... */ -#define FCRCS_REGNUM 69 /* FP control/status */ -#define FCRIR_REGNUM 70 /* FP implementation/revision */ - -/* Define DO_REGISTERS_INFO() to do machine-specific formatting - of register dumps. */ - -#define DO_REGISTERS_INFO(_regnum, fp) mips_do_registers_info(_regnum, fp) - -/* Total amount of space needed to store our copies of the machine's - register state, the array `registers'. */ -#define REGISTER_BYTES (NUM_REGS*4) - -/* Index within `registers' of the first byte of the space for - register N. */ - -#define REGISTER_BYTE(N) ((N) * 4) - -/* Number of bytes of storage in the actual machine representation - for register N. On mips, all regs are 4 bytes. */ - -#define REGISTER_RAW_SIZE(N) 4 - -/* Number of bytes of storage in the program's representation - for register N. On mips, all regs are 4 bytes. */ - -#define REGISTER_VIRTUAL_SIZE(N) 4 - -/* Largest value REGISTER_RAW_SIZE can have. */ - -#define MAX_REGISTER_RAW_SIZE 4 - -/* Largest value REGISTER_VIRTUAL_SIZE can have. */ - -#define MAX_REGISTER_VIRTUAL_SIZE 4 - -/* 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) \ - bcopy ((FROM), (TO), 4); - -/* Convert data from virtual format for register REGNUM - to raw format for register REGNUM. */ - -#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \ - bcopy ((FROM), (TO), 4); - -/* Return the GDB type object for the "standard" data type - of data in register N. */ - -#define REGISTER_VIRTUAL_TYPE(N) builtin_type_int -/* Store the address of the place in which to copy the structure the - subroutine will return. This is called from call_function. */ - -#define STORE_STRUCT_RETURN(addr, sp) \ - { sp = push_word(sp, 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. XXX floats */ - -#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ - bcopy (REGBUF+REGISTER_BYTE (TYPE_CODE (TYPE) == TYPE_CODE_FLT ? FP0_REGNUM : 2), VALBUF, TYPE_LENGTH (TYPE)) - -/* Write into appropriate registers a function return value - of type TYPE, given in virtual format. */ - -#define STORE_RETURN_VALUE(TYPE,VALBUF) \ - write_register_bytes (REGISTER_BYTE (TYPE_CODE (TYPE) == TYPE_CODE_FLT ? FP0_REGNUM : 2), VALBUF, TYPE_LENGTH (TYPE)) - -/* 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). */ - -#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(int *)(REGBUF+16)) - -/* 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) (FRAME_ADDR)mips_frame_chain(thisframe) - -/* 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. */ -/* We handle this differently for mips, and maybe we should not */ - -#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) {(FRAMELESS) = 0;} - -/* Saved Pc. */ - -#define FRAME_SAVED_PC(FRAME) (mips_frame_saved_pc(FRAME)) - -#define FRAME_ARGS_ADDRESS(fi) (fi)->frame - -#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame - -/* Return number of args passed to a frame. - Can return -1, meaning no way to tell. */ - -#define FRAME_NUM_ARGS(num, fi) (num = mips_frame_num_args(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_FIND_SAVED_REGS(frame_info, frame_saved_regs) ( \ - (frame_saved_regs) = *(frame_info)->saved_regs, \ - (frame_saved_regs).regs[SP_REGNUM] = (frame_info)->frame) - - -/* Things needed for making the inferior call functions. */ - -/* Stack has strict alignment. However, use PUSH_ARGUMENTS - to take care of it. */ -/*#define STACK_ALIGN(addr) (((addr)+3)&~3)*/ - -#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \ - sp = mips_push_arguments(nargs, args, sp, struct_return, struct_addr) - -/* Push an empty stack frame, to record the current PC, etc. */ - -#define PUSH_DUMMY_FRAME mips_push_dummy_frame() - -/* Discard from the stack the innermost frame, restoring all registers. */ - -#define POP_FRAME mips_pop_frame() - -#define MK_OP(op,rs,rt,offset) (((op)<<26)|((rs)<<21)|((rt)<<16)|(offset)) -#define CALL_DUMMY_SIZE (16*4) -#define Dest_Reg 2 -#define CALL_DUMMY {\ - MK_OP(0,RA_REGNUM,0,8), /* jr $ra # Fake ABOUT_TO_RETURN ...*/\ - 0, /* nop # ... to stop raw backtrace*/\ - 0x27bd0000, /* addu sp,?0 # Pseudo prologue */\ -/* Start here: */\ - MK_OP(061,SP_REGNUM,12,0), /* lwc1 $f12,0(sp) # Reload first 4 args*/\ - MK_OP(061,SP_REGNUM,13,4), /* lwc1 $f13,4(sp) */\ - MK_OP(061,SP_REGNUM,14,8), /* lwc1 $f14,8(sp) */\ - MK_OP(061,SP_REGNUM,15,12), /* lwc1 $f15,12(sp) */\ - MK_OP(043,SP_REGNUM,4,0), /* lw $r4,0(sp) # Re-load FP regs*/\ - MK_OP(043,SP_REGNUM,5,4), /* lw $r5,4(sp) */\ - MK_OP(043,SP_REGNUM,6,8), /* lw $r6,8(sp) */\ - MK_OP(043,SP_REGNUM,7,12), /* lw $r7,12(sp) */\ - (017<<26)| (Dest_Reg << 16), /* lui $r31,<target upper 16 bits>*/\ - MK_OP(13,Dest_Reg,Dest_Reg,0), /* ori $r31,$r31,<lower 16 bits>*/ \ - (Dest_Reg<<21) | (31<<11) | 9, /* jalr $r31 */\ - MK_OP(043,SP_REGNUM,7,12), /* lw $r7,12(sp) */\ - 0x5000d, /* bpt */\ -} - -#define CALL_DUMMY_START_OFFSET 12 - -/* Insert the specified number of args and function address - into a call sequence of the above form stored at DUMMYNAME. */ - -#define FIX_CALL_DUMMY(dummyname, start_sp, fun, nargs, args, rettype, gcc_p)\ - (((int*)dummyname)[11] |= (((unsigned long)(fun)) >> 16), \ - ((int*)dummyname)[12] |= (unsigned short)(fun)) - -/* Specific information about a procedure. - This overlays the MIPS's PDR records, - mipsread.c (ab)uses this to save memory */ - -typedef struct mips_extra_func_info { - long numargs; /* number of args to procedure (was iopt) */ - PDR pdr; /* Procedure descriptor record */ -} *mips_extra_func_info_t; - -#define EXTRA_FRAME_INFO \ - mips_extra_func_info_t proc_desc; \ - int num_args;\ - struct frame_saved_regs *saved_regs; - -#define INIT_EXTRA_FRAME_INFO(fromleaf, fci) init_extra_frame_info(fci) - -/* Special symbol found in blocks associated with routines. We can hang - mips_extra_func_info_t's off of this. */ - -#define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__" |