/* OBSOLETE /* Parameters for targeting on a Gould NP1, for GDB, the GNU debugger. */ /* OBSOLETE Copyright 1986, 1987, 1989, 1991, 1993 Free Software Foundation, Inc. */ /* OBSOLETE */ /* OBSOLETE This file is part of GDB. */ /* OBSOLETE */ /* OBSOLETE This program is free software; you can redistribute it and/or modify */ /* OBSOLETE it under the terms of the GNU General Public License as published by */ /* OBSOLETE the Free Software Foundation; either version 2 of the License, or */ /* OBSOLETE (at your option) any later version. */ /* OBSOLETE */ /* OBSOLETE This program is distributed in the hope that it will be useful, */ /* OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of */ /* OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ /* OBSOLETE GNU General Public License for more details. */ /* OBSOLETE */ /* OBSOLETE You should have received a copy of the GNU General Public License */ /* OBSOLETE along with this program; if not, write to the Free Software */ /* OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *x/ */ /* OBSOLETE */ /* OBSOLETE #define GOULD_NPL */ /* OBSOLETE */ /* OBSOLETE #define TARGET_BYTE_ORDER BIG_ENDIAN */ /* OBSOLETE */ /* OBSOLETE /* N_ENTRY appears in libraries on Gould machines. */ /* OBSOLETE Don't know what 0xa4 is; it's mentioned in stab.h */ /* OBSOLETE but only in the sdb symbol list. *x/ */ /* OBSOLETE #define IGNORE_SYMBOL(type) (type == N_ENTRY || type == 0xa4) */ /* OBSOLETE */ /* OBSOLETE /* We don't want the extra gnu symbols on the machine; */ /* OBSOLETE they will interfere with the shared segment symbols. *x/ */ /* OBSOLETE #define NO_GNU_STABS */ /* OBSOLETE */ /* OBSOLETE /* Macro for text-offset and data info (in NPL a.out format). *x/ */ /* OBSOLETE #define TEXTINFO \ */ /* OBSOLETE text_offset = N_TXTOFF (exec_coffhdr, exec_aouthdr); \ */ /* OBSOLETE exec_data_offset = N_TXTOFF (exec_coffhdr, exec_aouthdr)\ */ /* OBSOLETE + exec_aouthdr.a_text */ /* OBSOLETE */ /* OBSOLETE /* Macro for number of symbol table entries *x/ */ /* OBSOLETE #define NUMBER_OF_SYMBOLS \ */ /* OBSOLETE (coffhdr.f_nsyms) */ /* OBSOLETE */ /* OBSOLETE /* Macro for file-offset of symbol table (in NPL a.out format). *x/ */ /* OBSOLETE #define SYMBOL_TABLE_OFFSET \ */ /* OBSOLETE N_SYMOFF (coffhdr) */ /* OBSOLETE */ /* OBSOLETE /* Macro for file-offset of string table (in NPL a.out format). *x/ */ /* OBSOLETE #define STRING_TABLE_OFFSET \ */ /* OBSOLETE (N_STROFF (coffhdr)) */ /* OBSOLETE */ /* OBSOLETE /* Macro to store the length of the string table data in INTO. *x/ */ /* OBSOLETE #define READ_STRING_TABLE_SIZE(INTO) \ */ /* OBSOLETE { INTO = hdr.a_stsize; } */ /* OBSOLETE */ /* OBSOLETE /* Macro to declare variables to hold the file's header data. *x/ */ /* OBSOLETE #define DECLARE_FILE_HEADERS struct exec hdr; \ */ /* OBSOLETE FILHDR coffhdr */ /* OBSOLETE */ /* OBSOLETE /* Macro to read the header data from descriptor DESC and validate it. */ /* OBSOLETE NAME is the file name, for error messages. *x/ */ /* OBSOLETE #define READ_FILE_HEADERS(DESC, NAME) \ */ /* OBSOLETE { val = myread (DESC, &coffhdr, sizeof coffhdr); \ */ /* OBSOLETE if (val < 0) \ */ /* OBSOLETE perror_with_name (NAME); \ */ /* OBSOLETE val = myread (DESC, &hdr, sizeof hdr); \ */ /* OBSOLETE if (val < 0) \ */ /* OBSOLETE perror_with_name (NAME); \ */ /* OBSOLETE if (coffhdr.f_magic != GNP1MAGIC) \ */ /* OBSOLETE error ("File \"%s\" not in coff executable format.", NAME); \ */ /* OBSOLETE if (N_BADMAG (hdr)) \ */ /* OBSOLETE error ("File \"%s\" not in executable format.", NAME); } */ /* OBSOLETE */ /* OBSOLETE /* Define COFF and other symbolic names needed on NP1 *x/ */ /* OBSOLETE #define NS32GMAGIC GNP1MAGIC */ /* OBSOLETE #define NS32SMAGIC GPNMAGIC */ /* OBSOLETE */ /* OBSOLETE /* Address of blocks in N_LBRAC and N_RBRAC symbols are absolute addresses, */ /* OBSOLETE not relative to start of source address. *x/ */ /* OBSOLETE #define BLOCK_ADDRESS_ABSOLUTE */ /* OBSOLETE */ /* OBSOLETE /* Offset from address of function to start of its code. */ /* OBSOLETE Zero on most machines. *x/ */ /* OBSOLETE #define FUNCTION_START_OFFSET 8 */ /* OBSOLETE */ /* OBSOLETE /* Advance PC across any function entry prologue instructions */ /* OBSOLETE to reach some "real" code. One NPL we can have one two startup */ /* OBSOLETE sequences depending on the size of the local stack: */ /* OBSOLETE */ /* OBSOLETE Either: */ /* OBSOLETE "suabr b2, #" */ /* OBSOLETE of */ /* OBSOLETE "lil r4, #", "suabr b2, #(r4)" */ /* OBSOLETE */ /* OBSOLETE "lwbr b6, #", "stw r1, 8(b2)" */ /* OBSOLETE Optional "stwbr b3, c(b2)" */ /* OBSOLETE Optional "trr r2,r7" (Gould first argument register passing) */ /* OBSOLETE or */ /* OBSOLETE Optional "stw r2,8(b3)" (Gould first argument register passing) */ /* OBSOLETE *x/ */ /* OBSOLETE #define SKIP_PROLOGUE(pc) { \ */ /* OBSOLETE register int op = read_memory_integer ((pc), 4); \ */ /* OBSOLETE if ((op & 0xffff0000) == 0xFA0B0000) { \ */ /* OBSOLETE pc += 4; \ */ /* OBSOLETE op = read_memory_integer ((pc), 4); \ */ /* OBSOLETE if ((op & 0xffff0000) == 0x59400000) { \ */ /* OBSOLETE pc += 4; \ */ /* OBSOLETE op = read_memory_integer ((pc), 4); \ */ /* OBSOLETE if ((op & 0xffff0000) == 0x5F000000) { \ */ /* OBSOLETE pc += 4; \ */ /* OBSOLETE op = read_memory_integer ((pc), 4); \ */ /* OBSOLETE if (op == 0xD4820008) { \ */ /* OBSOLETE pc += 4; \ */ /* OBSOLETE op = read_memory_integer ((pc), 4); \ */ /* OBSOLETE if (op == 0x5582000C) { \ */ /* OBSOLETE pc += 4; \ */ /* OBSOLETE op = read_memory_integer ((pc), 2); \ */ /* OBSOLETE if (op == 0x2fa0) { \ */ /* OBSOLETE pc += 2; \ */ /* OBSOLETE } else { \ */ /* OBSOLETE op = read_memory_integer ((pc), 4); \ */ /* OBSOLETE if (op == 0xd5030008) { \ */ /* OBSOLETE pc += 4; \ */ /* OBSOLETE } \ */ /* OBSOLETE } \ */ /* OBSOLETE } else { \ */ /* OBSOLETE op = read_memory_integer ((pc), 2); \ */ /* OBSOLETE if (op == 0x2fa0) { \ */ /* OBSOLETE pc += 2; \ */ /* OBSOLETE } \ */ /* OBSOLETE } \ */ /* OBSOLETE } \ */ /* OBSOLETE } \ */ /* OBSOLETE } \ */ /* OBSOLETE } \ */ /* OBSOLETE if ((op & 0xffff0000) == 0x59000000) { \ */ /* OBSOLETE pc += 4; \ */ /* OBSOLETE op = read_memory_integer ((pc), 4); \ */ /* OBSOLETE if ((op & 0xffff0000) == 0x5F000000) { \ */ /* OBSOLETE pc += 4; \ */ /* OBSOLETE op = read_memory_integer ((pc), 4); \ */ /* OBSOLETE if (op == 0xD4820008) { \ */ /* OBSOLETE pc += 4; \ */ /* OBSOLETE op = read_memory_integer ((pc), 4); \ */ /* OBSOLETE if (op == 0x5582000C) { \ */ /* OBSOLETE pc += 4; \ */ /* OBSOLETE op = read_memory_integer ((pc), 2); \ */ /* OBSOLETE if (op == 0x2fa0) { \ */ /* OBSOLETE pc += 2; \ */ /* OBSOLETE } else { \ */ /* OBSOLETE op = read_memory_integer ((pc), 4); \ */ /* OBSOLETE if (op == 0xd5030008) { \ */ /* OBSOLETE pc += 4; \ */ /* OBSOLETE } \ */ /* OBSOLETE } \ */ /* OBSOLETE } else { \ */ /* OBSOLETE op = read_memory_integer ((pc), 2); \ */ /* OBSOLETE if (op == 0x2fa0) { \ */ /* OBSOLETE pc += 2; \ */ /* OBSOLETE } \ */ /* OBSOLETE } \ */ /* OBSOLETE } \ */ /* OBSOLETE } \ */ /* OBSOLETE } \ */ /* OBSOLETE } */ /* OBSOLETE */ /* OBSOLETE /* Immediately after a function call, return the saved pc. */ /* OBSOLETE Can't go through the frames for this because on some machines */ /* OBSOLETE the new frame is not set up until the new function executes */ /* OBSOLETE some instructions. True on NPL! Return address is in R1. */ /* OBSOLETE The true return address is REALLY 4 past that location! *x/ */ /* OBSOLETE #define SAVED_PC_AFTER_CALL(frame) \ */ /* OBSOLETE (read_register(R1_REGNUM) + 4) */ /* OBSOLETE */ /* OBSOLETE /* Address of end of stack space. *x/ */ /* OBSOLETE #define STACK_END_ADDR 0x7fffc000 */ /* OBSOLETE */ /* OBSOLETE /* Stack grows downward. *x/ */ /* OBSOLETE #define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) */ /* OBSOLETE */ /* OBSOLETE /* Sequence of bytes for breakpoint instruction. */ /* OBSOLETE This is padded out to the size of a machine word. When it was just */ /* OBSOLETE {0x28, 0x09} it gave problems if hit breakpoint on returning from a */ /* OBSOLETE function call. *x/ */ /* OBSOLETE #define BREAKPOINT {0x28, 0x09, 0x0, 0x0} */ /* OBSOLETE */ /* OBSOLETE /* Amount PC must be decremented by after a breakpoint. */ /* OBSOLETE This is often the number of bytes in BREAKPOINT */ /* OBSOLETE but not always. *x/ */ /* OBSOLETE #define DECR_PC_AFTER_BREAK 2 */ /* OBSOLETE */ /* OBSOLETE /* Return 1 if P points to an invalid floating point value. *x/ */ /* OBSOLETE #define INVALID_FLOAT(p, len) ((*(short *)p & 0xff80) == 0x8000) */ /* OBSOLETE */ /* OBSOLETE /* Say how long (ordinary) registers are. This is a piece of bogosity */ /* OBSOLETE used in push_word and a few other places; REGISTER_RAW_SIZE is the */ /* OBSOLETE real way to know how big a register is. *x/ */ /* OBSOLETE */ /* OBSOLETE #define REGISTER_SIZE 4 */ /* OBSOLETE */ /* OBSOLETE /* Size of bytes of vector register (NP1 only), 32 elements * sizeof(int) *x/ */ /* OBSOLETE #define VR_SIZE 128 */ /* OBSOLETE */ /* OBSOLETE /* Number of machine registers *x/ */ /* OBSOLETE #define NUM_REGS 27 */ /* OBSOLETE #define NUM_GEN_REGS 16 */ /* OBSOLETE #define NUM_CPU_REGS 4 */ /* OBSOLETE #define NUM_VECTOR_REGS 7 */ /* OBSOLETE */ /* OBSOLETE /* Initializer for an array of names of registers. */ /* OBSOLETE There should be NUM_REGS strings in this initializer. *x/ */ /* OBSOLETE #define REGISTER_NAMES { \ */ /* OBSOLETE "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ */ /* OBSOLETE "b0", "b1", "b2", "b3", "b4", "b5", "b6", "b7", \ */ /* OBSOLETE "sp", "ps", "pc", "ve", \ */ /* OBSOLETE "v1", "v2", "v3", "v4", "v5", "v6", "v7", \ */ /* OBSOLETE } */ /* OBSOLETE */ /* OBSOLETE /* Register numbers of various important registers. */ /* OBSOLETE Note that some of these values are "real" register numbers, */ /* OBSOLETE and correspond to the general registers of the machine, */ /* OBSOLETE and some are "phony" register numbers which are too large */ /* OBSOLETE to be actual register numbers as far as the user is concerned */ /* OBSOLETE but do serve to get the desired values when passed to read_register. *x/ */ /* OBSOLETE #define R1_REGNUM 1 /* Gr1 => return address of caller *x/ */ /* OBSOLETE #define R2_REGNUM 2 /* Gr2 => return value from function *x/ */ /* OBSOLETE #define R4_REGNUM 4 /* Gr4 => register save area *x/ */ /* OBSOLETE #define R5_REGNUM 5 /* Gr5 => register save area *x/ */ /* OBSOLETE #define R6_REGNUM 6 /* Gr6 => register save area *x/ */ /* OBSOLETE #define R7_REGNUM 7 /* Gr7 => register save area *x/ */ /* OBSOLETE #define B1_REGNUM 9 /* Br1 => start of this code routine *x/ */ /* OBSOLETE #define SP_REGNUM 10 /* Br2 == (sp) *x/ */ /* OBSOLETE #define AP_REGNUM 11 /* Br3 == (ap) *x/ */ /* OBSOLETE #define FP_REGNUM 16 /* A copy of Br2 saved in trap *x/ */ /* OBSOLETE #define PS_REGNUM 17 /* Contains processor status *x/ */ /* OBSOLETE #define PC_REGNUM 18 /* Contains program counter *x/ */ /* OBSOLETE #define VE_REGNUM 19 /* Vector end (user setup) register *x/ */ /* OBSOLETE #define V1_REGNUM 20 /* First vector register *x/ */ /* OBSOLETE #define V7_REGNUM 26 /* First vector register *x/ */ /* OBSOLETE */ /* OBSOLETE /* Total amount of space needed to store our copies of the machine's */ /* OBSOLETE register state, the array `registers'. *x/ */ /* OBSOLETE #define REGISTER_BYTES \ */ /* OBSOLETE (NUM_GEN_REGS*4 + NUM_VECTOR_REGS*VR_SIZE + NUM_CPU_REGS*4) */ /* OBSOLETE */ /* OBSOLETE /* Index within `registers' of the first byte of the space for */ /* OBSOLETE register N. *x/ */ /* OBSOLETE #define REGISTER_BYTE(N) \ */ /* OBSOLETE (((N) < V1_REGNUM) ? ((N) * 4) : (((N) - V1_REGNUM) * VR_SIZE) + 80) */ /* OBSOLETE */ /* OBSOLETE /* Number of bytes of storage in the actual machine representation */ /* OBSOLETE for register N. On the NP1, all normal regs are 4 bytes, but */ /* OBSOLETE the vector registers are VR_SIZE*4 bytes long. *x/ */ /* OBSOLETE #define REGISTER_RAW_SIZE(N) \ */ /* OBSOLETE (((N) < V1_REGNUM) ? 4 : VR_SIZE) */ /* OBSOLETE */ /* OBSOLETE /* Number of bytes of storage in the program's representation */ /* OBSOLETE for register N. On the NP1, all regs are 4 bytes. *x/ */ /* OBSOLETE #define REGISTER_VIRTUAL_SIZE(N) \ */ /* OBSOLETE (((N) < V1_REGNUM) ? 4 : VR_SIZE) */ /* OBSOLETE */ /* OBSOLETE /* Largest value REGISTER_RAW_SIZE can have. *x/ */ /* OBSOLETE #define MAX_REGISTER_RAW_SIZE VR_SIZE */ /* OBSOLETE */ /* OBSOLETE /* Largest value REGISTER_VIRTUAL_SIZE can have. *x/ */ /* OBSOLETE #define MAX_REGISTER_VIRTUAL_SIZE VR_SIZE */ /* OBSOLETE */ /* OBSOLETE /* Return the GDB type object for the "standard" data type */ /* OBSOLETE of data in register N. *x/ */ /* OBSOLETE #define REGISTER_VIRTUAL_TYPE(N) \ */ /* OBSOLETE ((N) > VE_REGNUM ? builtin_type_np1_vector : builtin_type_int) */ /* OBSOLETE extern struct type *builtin_type_np1_vector; */ /* OBSOLETE */ /* OBSOLETE /* Store the address of the place in which to copy the structure the */ /* OBSOLETE subroutine will return. This is called from call_function. */ /* OBSOLETE */ /* OBSOLETE On this machine this is a no-op, because gcc isn't used on it */ /* OBSOLETE yet. So this calling convention is not used. *x/ */ /* OBSOLETE */ /* OBSOLETE #define STORE_STRUCT_RETURN(ADDR, SP) push_word(SP + 8, ADDR) */ /* OBSOLETE */ /* OBSOLETE /* Extract from an arrary REGBUF containing the (raw) register state */ /* OBSOLETE a function return value of type TYPE, and copy that, in virtual format, */ /* OBSOLETE into VALBUF. *x/ */ /* OBSOLETE */ /* OBSOLETE #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ */ /* OBSOLETE memcpy (VALBUF, ((int *)(REGBUF)) + 2, TYPE_LENGTH (TYPE)) */ /* OBSOLETE */ /* OBSOLETE /* Write into appropriate registers a function return value */ /* OBSOLETE of type TYPE, given in virtual format. *x/ */ /* OBSOLETE */ /* OBSOLETE #define STORE_RETURN_VALUE(TYPE,VALBUF) \ */ /* OBSOLETE write_register_bytes (REGISTER_BYTE (R2_REGNUM), VALBUF, \ */ /* OBSOLETE TYPE_LENGTH (TYPE)) */ /* OBSOLETE */ /* OBSOLETE /* Extract from an array REGBUF containing the (raw) register state */ /* OBSOLETE the address in which a function should return its structure value, */ /* OBSOLETE as a CORE_ADDR (or an expression that can be used as one). *x/ */ /* OBSOLETE */ /* OBSOLETE #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*((int *)(REGBUF) + 2)) */ /* OBSOLETE */ /* OBSOLETE /* Both gcc and cc return small structs in registers (i.e. in GDB */ /* OBSOLETE terminology, small structs don't use the struct return convention). *x/ */ /* OBSOLETE extern use_struct_convention_fn gould_use_struct_convention; */ /* OBSOLETE #define USE_STRUCT_CONVENTION(gcc_p, type) gould_use_struct_convention (gcc_p, type) */ /* OBSOLETE */ /* OBSOLETE /* Describe the pointer in each stack frame to the previous stack frame */ /* OBSOLETE (its caller). *x/ */ /* OBSOLETE */ /* OBSOLETE /* FRAME_CHAIN takes a frame's nominal address */ /* OBSOLETE and produces the frame's chain-pointer. */ /* OBSOLETE */ /* OBSOLETE However, if FRAME_CHAIN_VALID returns zero, */ /* OBSOLETE it means the given frame is the outermost one and has no caller. *x/ */ /* OBSOLETE */ /* OBSOLETE /* In the case of the NPL, the frame's norminal address is Br2 and the */ /* OBSOLETE previous routines frame is up the stack X bytes, where X is the */ /* OBSOLETE value stored in the code function header xA(Br1). *x/ */ /* OBSOLETE #define FRAME_CHAIN(thisframe) (findframe(thisframe)) */ /* OBSOLETE */ /* OBSOLETE extern int gould_frame_chain_valid (CORE_ADDR, struct frame_info *); */ /* OBSOLETE #define FRAME_CHAIN_VALID(chain, thisframe) gould_frame_chain_valid (chain, thisframe) */ /* OBSOLETE */ /* OBSOLETE /* Define other aspects of the stack frame on NPL. *x/ */ /* OBSOLETE #define FRAME_SAVED_PC(FRAME) \ */ /* OBSOLETE (read_memory_integer ((FRAME)->frame + 8, 4)) */ /* OBSOLETE */ /* OBSOLETE #define FRAME_ARGS_ADDRESS(fi) \ */ /* OBSOLETE ((fi)->next ? \ */ /* OBSOLETE read_memory_integer ((fi)->frame + 12, 4) : \ */ /* OBSOLETE read_register (AP_REGNUM)) */ /* OBSOLETE */ /* OBSOLETE #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame) */ /* OBSOLETE */ /* OBSOLETE /* Set VAL to the number of args passed to frame described by FI. */ /* OBSOLETE Can set VAL to -1, meaning no way to tell. *x/ */ /* OBSOLETE */ /* OBSOLETE /* We can check the stab info to see how */ /* OBSOLETE many arg we have. No info in stack will tell us *x/ */ /* OBSOLETE #define FRAME_NUM_ARGS(fi) (findarg(fi)) */ /* OBSOLETE */ /* OBSOLETE /* Return number of bytes at start of arglist that are not really args. *x/ */ /* OBSOLETE #define FRAME_ARGS_SKIP 8 */ /* OBSOLETE */ /* OBSOLETE /* Put here the code to store, into a struct frame_saved_regs, */ /* OBSOLETE the addresses of the saved registers of frame described by FRAME_INFO. */ /* OBSOLETE This includes special registers such as pc and fp saved in special */ /* OBSOLETE ways in the stack frame. sp is even more special: */ /* OBSOLETE the address we return for it IS the sp for the next frame. *x/ */ /* OBSOLETE */ /* OBSOLETE #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ */ /* OBSOLETE { \ */ /* OBSOLETE memset (&frame_saved_regs, '\0', sizeof frame_saved_regs); \ */ /* OBSOLETE (frame_saved_regs).regs[SP_REGNUM] = framechain (frame_info); \ */ /* OBSOLETE (frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame + 8; \ */ /* OBSOLETE (frame_saved_regs).regs[R4_REGNUM] = (frame_info)->frame + 0x30; \ */ /* OBSOLETE (frame_saved_regs).regs[R5_REGNUM] = (frame_info)->frame + 0x34; \ */ /* OBSOLETE (frame_saved_regs).regs[R6_REGNUM] = (frame_info)->frame + 0x38; \ */ /* OBSOLETE (frame_saved_regs).regs[R7_REGNUM] = (frame_info)->frame + 0x3C; \ */ /* OBSOLETE } */ /* OBSOLETE */ /* OBSOLETE /* Things needed for making the inferior call functions. *x/ */ /* OBSOLETE */ /* OBSOLETE #define CALL_DUMMY_LOCATION BEFORE_TEXT_END */ /* OBSOLETE #define NEED_TEXT_START_END 1 */ /* OBSOLETE */ /* OBSOLETE /* Push an empty stack frame, to record the current PC, etc. *x/ */ /* OBSOLETE */ /* OBSOLETE #define PUSH_DUMMY_FRAME \ */ /* OBSOLETE { register CORE_ADDR sp = read_register (SP_REGNUM); \ */ /* OBSOLETE register int regnum; \ */ /* OBSOLETE for (regnum = 0; regnum < FP_REGNUM; regnum++) \ */ /* OBSOLETE sp = push_word (sp, read_register (regnum)); \ */ /* OBSOLETE sp = push_word (sp, read_register (PS_REGNUM)); \ */ /* OBSOLETE sp = push_word (sp, read_register (PC_REGNUM)); \ */ /* OBSOLETE write_register (SP_REGNUM, sp);} */ /* OBSOLETE */ /* OBSOLETE /* Discard from the stack the innermost frame, */ /* OBSOLETE restoring all saved registers. *x/ */ /* OBSOLETE /* FIXME: Should be using {store,extract}_unsigned_integer. *x/ */ /* OBSOLETE */ /* OBSOLETE #define POP_FRAME \ */ /* OBSOLETE { CORE_ADDR sp = read_register(SP_REGNUM); \ */ /* OBSOLETE ULONGEST reg; \ */ /* OBSOLETE int regnum; \ */ /* OBSOLETE for(regnum = 0;regnum < FP_REGNUM;regnum++){ \ */ /* OBSOLETE sp-=REGISTER_SIZE; \ */ /* OBSOLETE read_memory(sp,®,REGISTER_SIZE); \ */ /* OBSOLETE write_register(regnum,reg);} \ */ /* OBSOLETE sp-=REGISTER_SIZE; \ */ /* OBSOLETE read_memory(sp,®,REGISTER_SIZE); \ */ /* OBSOLETE write_register(PS_REGNUM,reg); \ */ /* OBSOLETE sp-=REGISTER_SIZE; \ */ /* OBSOLETE read_memory(sp,®,REGISTER_SIZE); \ */ /* OBSOLETE write_register(PC_REGNUM,reg);} */ /* OBSOLETE */ /* OBSOLETE /* MJD - Size of dummy frame pushed onto stack by PUSH_DUMMY_FRAME *x/ */ /* OBSOLETE */ /* OBSOLETE #define DUMMY_FRAME_SIZE (0x48) */ /* OBSOLETE */ /* OBSOLETE /* MJD - The sequence of words in the instructions is */ /* OBSOLETE halt */ /* OBSOLETE halt */ /* OBSOLETE halt */ /* OBSOLETE halt */ /* OBSOLETE subr b2,stack size,0 grab stack space for dummy call */ /* OBSOLETE labr b3,x0(b2),0 set AP_REGNUM to point at arguments */ /* OBSOLETE lw r2,x8(b3),0 load r2 with first argument */ /* OBSOLETE lwbr b1,arguments size(b2),0 load address of function to be called */ /* OBSOLETE brlnk r1,x8(b1),0 call function */ /* OBSOLETE halt */ /* OBSOLETE halt */ /* OBSOLETE labr b2,stack size(b2),0 give back stack */ /* OBSOLETE break break */ /* OBSOLETE *x/ */ /* OBSOLETE */ /* OBSOLETE #define CALL_DUMMY {0x00000000, \ */ /* OBSOLETE 0x00000000, \ */ /* OBSOLETE 0x59000000, \ */ /* OBSOLETE 0x598a0000, \ */ /* OBSOLETE 0xb5030008, \ */ /* OBSOLETE 0x5c820000, \ */ /* OBSOLETE 0x44810008, \ */ /* OBSOLETE 0x00000000, \ */ /* OBSOLETE 0x590a0000, \ */ /* OBSOLETE 0x28090000 } */ /* OBSOLETE */ /* OBSOLETE #define CALL_DUMMY_LENGTH 40 */ /* OBSOLETE */ /* OBSOLETE #define CALL_DUMMY_START_OFFSET 8 */ /* OBSOLETE */ /* OBSOLETE #define CALL_DUMMY_STACK_ADJUST 8 */ /* OBSOLETE */ /* OBSOLETE /* MJD - Fixup CALL_DUMMY for the specific function call. */ /* OBSOLETE OK heres the problems */ /* OBSOLETE 1) On a trap there are two copies of the stack pointer, one in SP_REGNUM */ /* OBSOLETE which is read/write and one in FP_REGNUM which is only read. It seems */ /* OBSOLETE that when restarting the GOULD NP1 uses FP_REGNUM's value. */ /* OBSOLETE 2) Loading function address into b1 looks a bit difficult if bigger than */ /* OBSOLETE 0x0000fffc, infact from what I can tell the compiler sets up table of */ /* OBSOLETE function address in base3 through which function calls are referenced. */ /* OBSOLETE */ /* OBSOLETE OK my solutions */ /* OBSOLETE Calculate the size of the dummy stack frame and do adjustments of */ /* OBSOLETE SP_REGNUM in the dummy call. */ /* OBSOLETE Push function address onto the stack and load it in the dummy call */ /* OBSOLETE *x/ */ /* OBSOLETE */ /* OBSOLETE #define FIX_CALL_DUMMY(dummyname, sp, fun, nargs, args, type, gcc_p) \ */ /* OBSOLETE { int i;\ */ /* OBSOLETE int arg_len = 0, total_len;\ */ /* OBSOLETE old_sp = push_word(old_sp,fun);\ */ /* OBSOLETE for(i = nargs - 1;i >= 0;i--)\ */ /* OBSOLETE arg_len += TYPE_LENGTH (VALUE_TYPE (value_arg_coerce (args[i])));\ */ /* OBSOLETE if(struct_return)\ */ /* OBSOLETE arg_len += TYPE_LENGTH(value_type);\ */ /* OBSOLETE total_len = DUMMY_FRAME_SIZE+CALL_DUMMY_STACK_ADJUST+4+arg_len;\ */ /* OBSOLETE dummyname[0] += total_len;\ */ /* OBSOLETE dummyname[2] += total_len;\ */ /* OBSOLETE dummyname[5] += arg_len+CALL_DUMMY_STACK_ADJUST;\ */ /* OBSOLETE dummyname[8] += total_len;} */ /* OBSOLETE */ /* OBSOLETE /* MJD - So the stack should end up looking like this */ /* OBSOLETE */ /* OBSOLETE | Normal stack frame | */ /* OBSOLETE | from normal program | */ /* OBSOLETE | flow | */ /* OBSOLETE +---------------------+ <- Final sp - 0x08 - argument size */ /* OBSOLETE | | - 0x4 - dummy_frame_size */ /* OBSOLETE | Pushed dummy frame | */ /* OBSOLETE | b0-b7, r0-r7 | */ /* OBSOLETE | pc and ps | */ /* OBSOLETE | | */ /* OBSOLETE +---------------------+ */ /* OBSOLETE | Function address | */ /* OBSOLETE +---------------------+ <- Final sp - 0x8 - arguments size */ /* OBSOLETE | | */ /* OBSOLETE | | */ /* OBSOLETE | | */ /* OBSOLETE | Arguments to | */ /* OBSOLETE | Function | */ /* OBSOLETE | | */ /* OBSOLETE | | */ /* OBSOLETE | | */ /* OBSOLETE +---------------------+ <- Final sp - 0x8 */ /* OBSOLETE | Dummy_stack_adjust | */ /* OBSOLETE +---------------------+ <- Final sp */ /* OBSOLETE | | */ /* OBSOLETE | where call will | */ /* OBSOLETE | build frame | */ /* OBSOLETE *x/ */