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Diffstat (limited to 'gdb/tm-np1.h')
| -rw-r--r-- | gdb/tm-np1.h | 502 |
1 files changed, 0 insertions, 502 deletions
diff --git a/gdb/tm-np1.h b/gdb/tm-np1.h deleted file mode 100644 index b7ea7d9f1f5..00000000000 --- a/gdb/tm-np1.h +++ /dev/null @@ -1,502 +0,0 @@ -/* Parameters for targeting on a Gould NP1, for GDB, the GNU debugger. - Copyright 1986, 1987, 1989, 1991, 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. */ - -#define GOULD_NPL - -#define TARGET_BYTE_ORDER BIG_ENDIAN - -/* N_ENTRY appears in libraries on Gould machines. - Don't know what 0xa4 is; it's mentioned in stab.h - but only in the sdb symbol list. */ -#define IGNORE_SYMBOL(type) (type == N_ENTRY || type == 0xa4) - -/* We don't want the extra gnu symbols on the machine; - they will interfere with the shared segment symbols. */ -#define NO_GNU_STABS - -/* Macro for text-offset and data info (in NPL a.out format). */ -#define TEXTINFO \ - text_offset = N_TXTOFF (exec_coffhdr, exec_aouthdr); \ - exec_data_offset = N_TXTOFF (exec_coffhdr, exec_aouthdr)\ - + exec_aouthdr.a_text - -/* Macro for number of symbol table entries */ -#define NUMBER_OF_SYMBOLS \ - (coffhdr.f_nsyms) - -/* Macro for file-offset of symbol table (in NPL a.out format). */ -#define SYMBOL_TABLE_OFFSET \ - N_SYMOFF (coffhdr) - -/* Macro for file-offset of string table (in NPL a.out format). */ -#define STRING_TABLE_OFFSET \ - (N_STROFF (coffhdr)) - -/* Macro to store the length of the string table data in INTO. */ -#define READ_STRING_TABLE_SIZE(INTO) \ - { INTO = hdr.a_stsize; } - -/* Macro to declare variables to hold the file's header data. */ -#define DECLARE_FILE_HEADERS struct exec hdr; \ - FILHDR coffhdr - -/* Macro to read the header data from descriptor DESC and validate it. - NAME is the file name, for error messages. */ -#define READ_FILE_HEADERS(DESC, NAME) \ -{ val = myread (DESC, &coffhdr, sizeof coffhdr); \ - if (val < 0) \ - perror_with_name (NAME); \ - val = myread (DESC, &hdr, sizeof hdr); \ - if (val < 0) \ - perror_with_name (NAME); \ - if (coffhdr.f_magic != GNP1MAGIC) \ - error ("File \"%s\" not in coff executable format.", NAME); \ - if (N_BADMAG (hdr)) \ - error ("File \"%s\" not in executable format.", NAME); } - -/* Define COFF and other symbolic names needed on NP1 */ -#define NS32GMAGIC GNP1MAGIC -#define NS32SMAGIC GPNMAGIC - -/* Address of blocks in N_LBRAC and N_RBRAC symbols are absolute addresses, - not relative to start of source address. */ -#define BLOCK_ADDRESS_ABSOLUTE - -/* Offset from address of function to start of its code. - Zero on most machines. */ -#define FUNCTION_START_OFFSET 8 - -/* Advance PC across any function entry prologue instructions - to reach some "real" code. One NPL we can have one two startup - sequences depending on the size of the local stack: - - Either: - "suabr b2, #" - of - "lil r4, #", "suabr b2, #(r4)" - - "lwbr b6, #", "stw r1, 8(b2)" - Optional "stwbr b3, c(b2)" - Optional "trr r2,r7" (Gould first argument register passing) - or - Optional "stw r2,8(b3)" (Gould first argument register passing) - */ -#define SKIP_PROLOGUE(pc) { \ - register int op = read_memory_integer ((pc), 4); \ - if ((op & 0xffff0000) == 0xFA0B0000) { \ - pc += 4; \ - op = read_memory_integer ((pc), 4); \ - if ((op & 0xffff0000) == 0x59400000) { \ - pc += 4; \ - op = read_memory_integer ((pc), 4); \ - if ((op & 0xffff0000) == 0x5F000000) { \ - pc += 4; \ - op = read_memory_integer ((pc), 4); \ - if (op == 0xD4820008) { \ - pc += 4; \ - op = read_memory_integer ((pc), 4); \ - if (op == 0x5582000C) { \ - pc += 4; \ - op = read_memory_integer ((pc), 2); \ - if (op == 0x2fa0) { \ - pc += 2; \ - } else { \ - op = read_memory_integer ((pc), 4); \ - if (op == 0xd5030008) { \ - pc += 4; \ - } \ - } \ - } else { \ - op = read_memory_integer ((pc), 2); \ - if (op == 0x2fa0) { \ - pc += 2; \ - } \ - } \ - } \ - } \ - } \ - } \ - if ((op & 0xffff0000) == 0x59000000) { \ - pc += 4; \ - op = read_memory_integer ((pc), 4); \ - if ((op & 0xffff0000) == 0x5F000000) { \ - pc += 4; \ - op = read_memory_integer ((pc), 4); \ - if (op == 0xD4820008) { \ - pc += 4; \ - op = read_memory_integer ((pc), 4); \ - if (op == 0x5582000C) { \ - pc += 4; \ - op = read_memory_integer ((pc), 2); \ - if (op == 0x2fa0) { \ - pc += 2; \ - } else { \ - op = read_memory_integer ((pc), 4); \ - if (op == 0xd5030008) { \ - pc += 4; \ - } \ - } \ - } else { \ - op = read_memory_integer ((pc), 2); \ - if (op == 0x2fa0) { \ - pc += 2; \ - } \ - } \ - } \ - } \ - } \ -} - -/* Immediately after a function call, return the saved pc. - Can't go through the frames for this because on some machines - the new frame is not set up until the new function executes - some instructions. True on NPL! Return address is in R1. - The true return address is REALLY 4 past that location! */ -#define SAVED_PC_AFTER_CALL(frame) \ - (read_register(R1_REGNUM) + 4) - -/* Address of end of stack space. */ -#define STACK_END_ADDR 0x7fffc000 - -/* Stack grows downward. */ -#define INNER_THAN < - -/* Sequence of bytes for breakpoint instruction. - This is padded out to the size of a machine word. When it was just - {0x28, 0x09} it gave problems if hit breakpoint on returning from a - function call. */ -#define BREAKPOINT {0x28, 0x09, 0x0, 0x0} - -/* 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 2 - -/* Nonzero if instruction at PC is a return instruction. "bu 4(r1)" */ -#define ABOUT_TO_RETURN(pc) (read_memory_integer (pc, 4) == 0x40100004) - -/* Return 1 if P points to an invalid floating point value. */ -#define INVALID_FLOAT(p, len) ((*(short *)p & 0xff80) == 0x8000) - -/* Say how long (ordinary) registers are. */ -#define REGISTER_TYPE long - -/* Size of bytes of vector register (NP1 only), 32 elements * sizeof(int) */ -#define VR_SIZE 128 - -/* Number of machine registers */ -#define NUM_REGS 27 -#define NUM_GEN_REGS 16 -#define NUM_CPU_REGS 4 -#define NUM_VECTOR_REGS 7 - -/* Initializer for an array of names of registers. - There should be NUM_REGS strings in this initializer. */ -#define REGISTER_NAMES { \ - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ - "b0", "b1", "b2", "b3", "b4", "b5", "b6", "b7", \ - "sp", "ps", "pc", "ve", \ - "v1", "v2", "v3", "v4", "v5", "v6", "v7", \ -} - -/* 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 R1_REGNUM 1 /* Gr1 => return address of caller */ -#define R2_REGNUM 2 /* Gr2 => return value from function */ -#define R4_REGNUM 4 /* Gr4 => register save area */ -#define R5_REGNUM 5 /* Gr5 => register save area */ -#define R6_REGNUM 6 /* Gr6 => register save area */ -#define R7_REGNUM 7 /* Gr7 => register save area */ -#define B1_REGNUM 9 /* Br1 => start of this code routine */ -#define SP_REGNUM 10 /* Br2 == (sp) */ -#define AP_REGNUM 11 /* Br3 == (ap) */ -#define FP_REGNUM 16 /* A copy of Br2 saved in trap */ -#define PS_REGNUM 17 /* Contains processor status */ -#define PC_REGNUM 18 /* Contains program counter */ -#define VE_REGNUM 19 /* Vector end (user setup) register */ -#define V1_REGNUM 20 /* First vector register */ -#define V7_REGNUM 26 /* First vector register */ - -/* Total amount of space needed to store our copies of the machine's - register state, the array `registers'. */ -#define REGISTER_BYTES \ - (NUM_GEN_REGS*4 + NUM_VECTOR_REGS*VR_SIZE + NUM_CPU_REGS*4) - -/* Index within `registers' of the first byte of the space for - register N. */ -#define REGISTER_BYTE(N) \ - (((N) < V1_REGNUM) ? ((N) * 4) : (((N) - V1_REGNUM) * VR_SIZE) + 80) - -/* Number of bytes of storage in the actual machine representation - for register N. On the NP1, all normal regs are 4 bytes, but - the vector registers are VR_SIZE*4 bytes long. */ -#define REGISTER_RAW_SIZE(N) \ - (((N) < V1_REGNUM) ? 4 : VR_SIZE) - -/* Number of bytes of storage in the program's representation - for register N. On the NP1, all regs are 4 bytes. */ -#define REGISTER_VIRTUAL_SIZE(N) \ - (((N) < V1_REGNUM) ? 4 : VR_SIZE) - -/* Largest value REGISTER_RAW_SIZE can have. */ -#define MAX_REGISTER_RAW_SIZE VR_SIZE - -/* Largest value REGISTER_VIRTUAL_SIZE can have. */ -#define MAX_REGISTER_VIRTUAL_SIZE VR_SIZE - -/* 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), REGISTER_RAW_SIZE(REGNUM)); - -/* 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), REGISTER_VIRTUAL_SIZE(REGNUM)); - -/* Return the GDB type object for the "standard" data type - of data in register N. */ -#define REGISTER_VIRTUAL_TYPE(N) \ - ((N) > VE_REGNUM ? builtin_type_np1_vector : builtin_type_int) -extern struct type *builtin_type_np1_vector; - -/* Store the address of the place in which to copy the structure the - subroutine will return. This is called from call_function. - - On this machine this is a no-op, because gcc isn't used on it - yet. So this calling convention is not used. */ - -#define STORE_STRUCT_RETURN(ADDR, SP) push_word(SP + 8, ADDR) - -/* Extract from an arrary 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) \ - bcopy (((int *)(REGBUF)) + 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 (R2_REGNUM), 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) + 2)) - -/* Both gcc and cc return small structs in registers (i.e. in GDB - terminology, small structs don't use the struct return convention). */ -#define USE_STRUCT_CONVENTION(gcc_p, type) (TYPE_LENGTH(type) > 8) - -/* 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. - - However, if FRAME_CHAIN_VALID returns zero, - it means the given frame is the outermost one and has no caller. */ - -/* In the case of the NPL, the frame's norminal address is Br2 and the - previous routines frame is up the stack X bytes, where X is the - value stored in the code function header xA(Br1). */ -#define FRAME_CHAIN(thisframe) (findframe(thisframe)) - -#define FRAME_CHAIN_VALID(chain, thisframe) \ - (chain != 0 && chain != (thisframe)->frame) - -/* Define other aspects of the stack frame on NPL. */ -#define FRAME_SAVED_PC(FRAME) \ - (read_memory_integer ((FRAME)->frame + 8, 4)) - -#define FRAME_ARGS_ADDRESS(fi) \ - ((fi)->next_frame ? \ - read_memory_integer ((fi)->frame + 12, 4) : \ - read_register (AP_REGNUM)) - -#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame) - -/* Set VAL to the number of args passed to frame described by FI. - Can set VAL to -1, meaning no way to tell. */ - -/* We can check the stab info to see how - many arg we have. No info in stack will tell us */ -#define FRAME_NUM_ARGS(val,fi) (val = findarg(fi)) - -/* Return number of bytes at start of arglist that are not really args. */ -#define FRAME_ARGS_SKIP 8 - -/* 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) \ -{ \ - bzero (&frame_saved_regs, sizeof frame_saved_regs); \ - (frame_saved_regs).regs[SP_REGNUM] = framechain (frame_info); \ - (frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame + 8; \ - (frame_saved_regs).regs[R4_REGNUM] = (frame_info)->frame + 0x30; \ - (frame_saved_regs).regs[R5_REGNUM] = (frame_info)->frame + 0x34; \ - (frame_saved_regs).regs[R6_REGNUM] = (frame_info)->frame + 0x38; \ - (frame_saved_regs).regs[R7_REGNUM] = (frame_info)->frame + 0x3C; \ -} - -/* Things needed for making the inferior call functions. */ - -#define CALL_DUMMY_LOCATION BEFORE_TEXT_END -#define NEED_TEXT_START_END - -/* Push an empty stack frame, to record the current PC, etc. */ - -#define PUSH_DUMMY_FRAME \ -{ register CORE_ADDR sp = read_register (SP_REGNUM); \ - register int regnum; \ - for (regnum = 0; regnum < FP_REGNUM; regnum++) \ - sp = push_word (sp, read_register (regnum)); \ - sp = push_word (sp, read_register (PS_REGNUM)); \ - sp = push_word (sp, read_register (PC_REGNUM)); \ - write_register (SP_REGNUM, sp);} - -/* Discard from the stack the innermost frame, - restoring all saved registers. */ - -#define POP_FRAME \ -{ CORE_ADDR sp = read_register(SP_REGNUM); \ - REGISTER_TYPE reg; \ - int regnum; \ - for(regnum = 0;regnum < FP_REGNUM;regnum++){ \ - sp-=sizeof(REGISTER_TYPE); \ - read_memory(sp,®,sizeof(REGISTER_TYPE)); \ - write_register(regnum,reg);} \ - sp-=sizeof(REGISTER_TYPE); \ - read_memory(sp,®,sizeof(REGISTER_TYPE)); \ - write_register(PS_REGNUM,reg); \ - sp-=sizeof(REGISTER_TYPE); \ - read_memory(sp,®,sizeof(REGISTER_TYPE)); \ - write_register(PC_REGNUM,reg);} - -/* MJD - Size of dummy frame pushed onto stack by PUSH_DUMMY_FRAME */ - -#define DUMMY_FRAME_SIZE (0x48) - -/* MJD - The sequence of words in the instructions is - halt - halt - halt - halt - subr b2,stack size,0 grab stack space for dummy call - labr b3,x0(b2),0 set AP_REGNUM to point at arguments - lw r2,x8(b3),0 load r2 with first argument - lwbr b1,arguments size(b2),0 load address of function to be called - brlnk r1,x8(b1),0 call function - halt - halt - labr b2,stack size(b2),0 give back stack - break break - */ - -#define CALL_DUMMY {0x00000000, \ - 0x00000000, \ - 0x59000000, \ - 0x598a0000, \ - 0xb5030008, \ - 0x5c820000, \ - 0x44810008, \ - 0x00000000, \ - 0x590a0000, \ - 0x28090000 } - -#define CALL_DUMMY_LENGTH 40 - -#define CALL_DUMMY_START_OFFSET 8 - -#define CALL_DUMMY_STACK_ADJUST 8 - -/* MJD - Fixup CALL_DUMMY for the specific function call. - OK heres the problems - 1) On a trap there are two copies of the stack pointer, one in SP_REGNUM - which is read/write and one in FP_REGNUM which is only read. It seems - that when restarting the GOULD NP1 uses FP_REGNUM's value. - 2) Loading function address into b1 looks a bit difficult if bigger than - 0x0000fffc, infact from what I can tell the compiler sets up table of - function address in base3 through which function calls are referenced. - - OK my solutions - Calculate the size of the dummy stack frame and do adjustments of - SP_REGNUM in the dummy call. - Push function address onto the stack and load it in the dummy call - */ - -#define FIX_CALL_DUMMY(dummyname, sp, fun, nargs, args, type, gcc_p) \ - { int i;\ - int arg_len = 0, total_len;\ - old_sp = push_word(old_sp,fun);\ - for(i = nargs - 1;i >= 0;i--)\ - arg_len += TYPE_LENGTH (VALUE_TYPE (value_arg_coerce (args[i])));\ - if(struct_return)\ - arg_len += TYPE_LENGTH(value_type);\ - total_len = DUMMY_FRAME_SIZE+CALL_DUMMY_STACK_ADJUST+4+arg_len;\ - dummyname[0] += total_len;\ - dummyname[2] += total_len;\ - dummyname[5] += arg_len+CALL_DUMMY_STACK_ADJUST;\ - dummyname[8] += total_len;} - -/* MJD - So the stack should end up looking like this - - | Normal stack frame | - | from normal program | - | flow | - +---------------------+ <- Final sp - 0x08 - argument size - | | - 0x4 - dummy_frame_size - | Pushed dummy frame | - | b0-b7, r0-r7 | - | pc and ps | - | | - +---------------------+ - | Function address | - +---------------------+ <- Final sp - 0x8 - arguments size - | | - | | - | | - | Arguments to | - | Function | - | | - | | - | | - +---------------------+ <- Final sp - 0x8 - | Dummy_stack_adjust | - +---------------------+ <- Final sp - | | - | where call will | - | build frame | -*/ |