home *** CD-ROM | disk | FTP | other *** search
- /* Parameters for execution on a Hewlett-Packard 9000/300, running bsd.
- Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc.
-
- This file is part of GDB.
-
- GDB 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 1, or (at your option)
- any later version.
-
- GDB 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 GDB; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Describe the endian nature of this machine. */
- #define BITS_BIG_ENDIAN
- #define BYTES_BIG_ENDIAN
- #define WORDS_BIG_ENDIAN
-
- /*
- * Configuration file for HP9000/300 series machine running
- * University of Utah's 4.3bsd port. This is NOT for HP-UX.
- * Problems to hpbsd-bugs@cs.utah.edu
- */
-
- #ifndef hp300
- #define hp300
- #endif
-
- /* Watch out for NaNs */
-
- #define IEEE_FLOAT
-
- /* Get rid of any system-imposed stack limit if possible. */
-
- #define SET_STACK_LIMIT_HUGE
-
- /* Define this if the C compiler puts an underscore at the front
- of external names before giving them to the linker. */
-
- #define NAMES_HAVE_UNDERSCORE
-
- /* Debugger information will be in DBX format. */
-
- #define READ_DBX_FORMAT
-
- /* 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) \
- { register int op = read_memory_integer (pc, 2); \
- if (op == 0047126) \
- pc += 4; /* Skip link #word */ \
- else if (op == 0044016) \
- pc += 6; /* Skip link #long */ \
- }
-
- /* 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. */
-
- #define SAVED_PC_AFTER_CALL(frame) \
- read_memory_integer (read_register (SP_REGNUM), 4)
-
- /* This is the amount to subtract from u.u_ar0
- to get the offset in the core file of the register values. */
-
- #define KERNEL_U_ADDR kernel_u_addr
-
- /* Same as offsetof macro from stddef.h (which 4.3BSD doesn't have). */
- #define my_offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
-
- /* On the HP300, sigtramp is in the u area. Gak! User struct is not
- mapped to the same virtual address in user/kernel address space
- (hence STACK_END_ADDR as opposed to KERNEL_U_ADDR). */
- #define IN_SIGTRAMP(pc, name) \
- ((pc) >= STACK_END_ADDR + my_offsetof (struct user, u_pcb.pcb_sigc[0]) \
- && (pc) < STACK_END_ADDR + my_offsetof (struct user, u_pcb.pcb_sigc[12]) \
- )
-
- /* Address of end of stack space. */
-
- #define STACK_END_ADDR 0xfff00000
-
- /* Stack grows downward. */
-
- #define INNER_THAN <
-
- /* Sequence of bytes for breakpoint instruction. */
-
- #define BREAKPOINT {0x4e, 0x42}
-
- /* 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. */
-
- #define ABOUT_TO_RETURN(pc) (read_memory_integer (pc, 2) == 0x4e75)
-
- /* Return 1 if P points to an invalid floating point value. */
-
- #define INVALID_FLOAT(p, len) 0 /* Just a first guess; not checked */
-
- /* Largest integer type */
- #define LONGEST long
-
- /* Name of the builtin type for the LONGEST type above. */
- #define BUILTIN_TYPE_LONGEST builtin_type_long
-
- /* Say how long (ordinary) registers are. */
-
- #define REGISTER_TYPE long
-
- /* Number of machine registers */
-
- #define NUM_REGS 29
-
- /* Initializer for an array of names of registers.
- There should be NUM_REGS strings in this initializer. */
-
- #define REGISTER_NAMES \
- {"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", \
- "a0", "a1", "a2", "a3", "a4", "a5", "a6", "sp", \
- "ps", "pc", \
- "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7", \
- "fpcontrol", "fpstatus", "fpiaddr" }
-
- /* 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 FP_REGNUM 14 /* Contains address of executing stack frame */
- #define SP_REGNUM 15 /* Contains address of top of stack */
- #define PS_REGNUM 16 /* Contains processor status */
- #define PC_REGNUM 17 /* Contains program counter */
- #define FP0_REGNUM 18 /* Floating point register 0 */
- #define FPC_REGNUM 26 /* 68881 control register */
- #define FPS_REGNUM 27 /* 68881 status register */
-
- /* Total amount of space needed to store our copies of the machine's
- register state, the array `registers'. */
- #define REGISTER_BYTES (16*4+8*12+8+12)
-
- /* Index within `registers' of the first byte of the space for
- register N. */
-
- #define REGISTER_BYTE(N) \
- ((N) >= FPC_REGNUM ? (((N) - FPC_REGNUM) * 4) + 168 \
- : (N) >= FP0_REGNUM ? (((N) - FP0_REGNUM) * 12) + 72 \
- : (N) * 4)
-
- /* Number of bytes of storage in the actual machine representation
- for register N. On the 68000, all regs are 4 bytes
- except the floating point regs which are 12 bytes. */
- /* Note that the unsigned cast here forces the result of the
- subtractiion to very high positive values if N < FP0_REGNUM */
-
- #define REGISTER_RAW_SIZE(N) (((unsigned)(N) - FP0_REGNUM) < 8 ? 12 : 4)
-
- /* Number of bytes of storage in the program's representation
- for register N. On the 68000, all regs are 4 bytes
- except the floating point regs which are 8-byte doubles. */
-
- #define REGISTER_VIRTUAL_SIZE(N) (((unsigned)(N) - FP0_REGNUM) < 8 ? 8 : 4)
-
- /* Largest value REGISTER_RAW_SIZE can have. */
-
- #define MAX_REGISTER_RAW_SIZE 12
-
- /* 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. */
-
- #define REGISTER_CONVERTIBLE(N) (((unsigned)(N) - FP0_REGNUM) < 8)
-
- /* Convert data from raw format for register REGNUM
- to virtual format for register REGNUM. */
-
- #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
- { if ((REGNUM) >= FP0_REGNUM && (REGNUM) < FPC_REGNUM) \
- convert_from_68881 ((FROM), (TO)); \
- else \
- 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) \
- { if ((REGNUM) >= FP0_REGNUM && (REGNUM) < FPC_REGNUM) \
- convert_to_68881 ((FROM), (TO)); \
- else \
- bcopy ((FROM), (TO), 4); }
-
- /* Return the GDB type object for the "standard" data type
- of data in register N. */
-
- #define REGISTER_VIRTUAL_TYPE(N) \
- (((unsigned)(N) - FP0_REGNUM) < 8 ? builtin_type_double : 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) \
- { write_register (9, (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) \
- bcopy (REGBUF, 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 (0, 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))
-
- /* Compensate for lack of `vprintf' function. */
- #ifndef HAVE_VPRINTF
- #define vprintf(format, ap) _doprnt (format, ap, stdout)
- #endif /* not HAVE_VPRINTF */
-
- /* This is a piece of magic that is given a register number REGNO
- and as BLOCKEND the address in the system of the end of the user structure
- and stores in ADDR the address in the kernel or core dump
- of that register. */
-
- #define REGISTER_U_ADDR(addr, blockend, regno) \
- { \
- if (regno < PS_REGNUM) \
- addr = (int) &((struct frame *)(blockend))->f_regs[regno]; \
- else if (regno == PS_REGNUM) \
- addr = (int) &((struct frame *)(blockend))->f_stackadj; \
- else if (regno == PC_REGNUM) \
- addr = (int) &((struct frame *)(blockend))->f_pc; \
- else if (regno < FPC_REGNUM) \
- addr = (int) \
- &((struct user *)0)->u_pcb.pcb_fpregs.fpf_regs[((regno)-FP0_REGNUM)*3];\
- else if (regno == FPC_REGNUM) \
- addr = (int) &((struct user *)0)->u_pcb.pcb_fpregs.fpf_fpcr; \
- else if (regno == FPS_REGNUM) \
- addr = (int) &((struct user *)0)->u_pcb.pcb_fpregs.fpf_fpsr; \
- else \
- addr = (int) &((struct user *)0)->u_pcb.pcb_fpregs.fpf_fpiar; \
- }
-
- /* 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.
-
- FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address
- and produces the nominal address of the caller frame.
-
- However, if FRAME_CHAIN_VALID returns zero,
- it means the given frame is the outermost one and has no caller.
- In that case, FRAME_CHAIN_COMBINE is not used. */
-
- /* In the case of the Sun, the frame's nominal address
- is the address of a 4-byte word containing the calling frame's address. */
-
- #define FRAME_CHAIN(thisframe) \
- (outside_startup_file ((thisframe)->pc) ? \
- read_memory_integer ((thisframe)->frame, 4) :\
- 0)
-
- #define FRAME_CHAIN_VALID(chain, thisframe) \
- (chain != 0 && (outside_startup_file (FRAME_SAVED_PC (thisframe))))
-
- #define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
-
- /* 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. */
- #define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
- FRAMELESS_LOOK_FOR_PROLOGUE(FI, FRAMELESS)
-
- #define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 4, 4))
-
- #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
-
- #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't tell how many args there are
- now that the C compiler delays popping them. */
- #define FRAME_NUM_ARGS(val,fi) (val = -1)
-
- #if 0
- #define FRAME_NUM_ARGS(val, fi) \
- { register CORE_ADDR pc = FRAME_SAVED_PC (fi); \
- register int insn = 0177777 & read_memory_integer (pc, 2); \
- val = 0; \
- if (insn == 0047757 || insn == 0157374) /* lea W(sp),sp or addaw #W,sp */ \
- val = read_memory_integer (pc + 2, 2); \
- else if ((insn & 0170777) == 0050217 /* addql #N, sp */ \
- || (insn & 0170777) == 0050117) /* addqw */ \
- { val = (insn >> 9) & 7; if (val == 0) val = 8; } \
- else if (insn == 0157774) /* addal #WW, sp */ \
- val = read_memory_integer (pc + 2, 4); \
- val >>= 2; }
- #endif
-
- /* 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) \
- { register int regnum; \
- register int regmask; \
- register CORE_ADDR next_addr; \
- register CORE_ADDR pc; \
- int nextinsn; \
- bzero (&frame_saved_regs, sizeof frame_saved_regs); \
- if ((frame_info)->pc >= (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM*4 - 8*12 - 4 \
- && (frame_info)->pc <= (frame_info)->frame) \
- { next_addr = (frame_info)->frame; \
- pc = (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM * 4 - 8*12 - 4; }\
- else \
- { pc = get_pc_function_start ((frame_info)->pc); \
- /* Verify we have a link a6 instruction next; \
- if not we lose. If we win, find the address above the saved \
- regs using the amount of storage from the link instruction. */\
- if (044016 == read_memory_integer (pc, 2)) \
- next_addr = (frame_info)->frame + read_memory_integer (pc += 2, 4), pc+=4; \
- else if (047126 == read_memory_integer (pc, 2)) \
- next_addr = (frame_info)->frame + read_memory_integer (pc += 2, 2), pc+=2; \
- else goto lose; \
- /* If have an addal #-n, sp next, adjust next_addr. */ \
- if ((0177777 & read_memory_integer (pc, 2)) == 0157774) \
- next_addr += read_memory_integer (pc += 2, 4), pc += 4; \
- } \
- /* next should be a moveml to (sp) or -(sp) or a movl r,-(sp) */ \
- regmask = read_memory_integer (pc + 2, 2); \
- /* But before that can come an fmovem. Check for it. */ \
- nextinsn = 0xffff & read_memory_integer (pc, 2); \
- if (0xf227 == nextinsn \
- && (regmask & 0xff00) == 0xe000) \
- { pc += 4; /* Regmask's low bit is for register fp7, the first pushed */ \
- for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--, regmask >>= 1) \
- if (regmask & 1) \
- (frame_saved_regs).regs[regnum] = (next_addr -= 12); \
- regmask = read_memory_integer (pc + 2, 2); } \
- if (0044327 == read_memory_integer (pc, 2)) \
- { pc += 4; /* Regmask's low bit is for register 0, the first written */ \
- for (regnum = 0; regnum < 16; regnum++, regmask >>= 1) \
- if (regmask & 1) \
- (frame_saved_regs).regs[regnum] = (next_addr += 4) - 4; } \
- else if (0044347 == read_memory_integer (pc, 2)) \
- { pc += 4; /* Regmask's low bit is for register 15, the first pushed */ \
- for (regnum = 15; regnum >= 0; regnum--, regmask >>= 1) \
- if (regmask & 1) \
- (frame_saved_regs).regs[regnum] = (next_addr -= 4); } \
- else if (0x2f00 == (0xfff0 & read_memory_integer (pc, 2))) \
- { regnum = 0xf & read_memory_integer (pc, 2); pc += 2; \
- (frame_saved_regs).regs[regnum] = (next_addr -= 4); } \
- /* fmovemx to index of sp may follow. */ \
- regmask = read_memory_integer (pc + 2, 2); \
- nextinsn = 0xffff & read_memory_integer (pc, 2); \
- if (0xf236 == nextinsn \
- && (regmask & 0xff00) == 0xf000) \
- { pc += 10; /* Regmask's low bit is for register fp0, the first written */ \
- for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--, regmask >>= 1) \
- if (regmask & 1) \
- (frame_saved_regs).regs[regnum] = (next_addr += 12) - 12; \
- regmask = read_memory_integer (pc + 2, 2); } \
- /* clrw -(sp); movw ccr,-(sp) may follow. */ \
- if (0x426742e7 == read_memory_integer (pc, 4)) \
- (frame_saved_regs).regs[PS_REGNUM] = (next_addr -= 4); \
- lose: ; \
- (frame_saved_regs).regs[SP_REGNUM] = (frame_info)->frame + 8; \
- (frame_saved_regs).regs[FP_REGNUM] = (frame_info)->frame; \
- (frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame + 4; \
- }
-
- /* Things needed for making the inferior call functions. */
-
- /* 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; \
- char raw_buffer[12]; \
- sp = push_word (sp, read_register (PC_REGNUM)); \
- sp = push_word (sp, read_register (FP_REGNUM)); \
- write_register (FP_REGNUM, sp); \
- for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--) \
- { read_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 12); \
- sp = push_bytes (sp, raw_buffer, 12); } \
- for (regnum = FP_REGNUM - 1; regnum >= 0; regnum--) \
- sp = push_word (sp, read_register (regnum)); \
- sp = push_word (sp, read_register (PS_REGNUM)); \
- write_register (SP_REGNUM, sp); }
-
- /* Discard from the stack the innermost frame,
- restoring all saved registers. */
-
- #define POP_FRAME \
- { register FRAME frame = get_current_frame (); \
- register CORE_ADDR fp; \
- register int regnum; \
- struct frame_saved_regs fsr; \
- struct frame_info *fi; \
- char raw_buffer[12]; \
- fi = get_frame_info (frame); \
- fp = fi->frame; \
- get_frame_saved_regs (fi, &fsr); \
- for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--) \
- if (fsr.regs[regnum]) \
- { read_memory (fsr.regs[regnum], raw_buffer, 12); \
- write_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 12); }\
- for (regnum = FP_REGNUM - 1; regnum >= 0; regnum--) \
- if (fsr.regs[regnum]) \
- write_register (regnum, read_memory_integer (fsr.regs[regnum], 4)); \
- if (fsr.regs[PS_REGNUM]) \
- write_register (PS_REGNUM, read_memory_integer (fsr.regs[PS_REGNUM], 4)); \
- write_register (FP_REGNUM, read_memory_integer (fp, 4)); \
- write_register (PC_REGNUM, read_memory_integer (fp + 4, 4)); \
- write_register (SP_REGNUM, fp + 8); \
- flush_cached_frames (); \
- set_current_frame (create_new_frame (read_register (FP_REGNUM),\
- read_pc ())); }
-
- /* This sequence of words is the instructions
- fmovem 0xff,-(sp)
- moveml 0xfffc,-(sp)
- clrw -(sp)
- movew ccr,-(sp)
- /..* The arguments are pushed at this point by GDB;
- no code is needed in the dummy for this.
- The CALL_DUMMY_START_OFFSET gives the position of
- the following jsr instruction. *../
- jsr @#32323232
- addl #69696969,sp
- trap #2
- nop
- Note this is 28 bytes.
- We actually start executing at the jsr, since the pushing of the
- registers is done by PUSH_DUMMY_FRAME. If this were real code,
- the arguments for the function called by the jsr would be pushed
- between the moveml and the jsr, and we could allow it to execute through.
- But the arguments have to be pushed by GDB after the PUSH_DUMMY_FRAME is done,
- and we cannot allow the moveml to push the registers again lest they be
- taken for the arguments. */
-
- #define CALL_DUMMY {0xf227e0ff, 0x48e7fffc, 0x426742e7, 0x4eb93232, 0x3232dffc, 0x69696969, 0x4e424e71}
-
- #define CALL_DUMMY_LENGTH 28
-
- #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, pc, fun, nargs, type) \
- { *(int *)((char *) dummyname + 20) = nargs * 4; \
- *(int *)((char *) dummyname + 14) = fun; }
-
- /* Interface definitions for kernel debugger KDB. */
-
- /* Map machine fault codes into signal numbers.
- First subtract 0, divide by 4, then index in a table.
- Faults for which the entry in this table is 0
- are not handled by KDB; the program's own trap handler
- gets to handle then. */
-
- #define FAULT_CODE_ORIGIN 0
- #define FAULT_CODE_UNITS 4
- #define FAULT_TABLE \
- { 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
- 0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
- 0, 0, 0, 0, 0, 0, 0, 0, \
- SIGILL }
-
- /* Start running with a stack stretching from BEG to END.
- BEG and END should be symbols meaningful to the assembler.
- This is used only for kdb. */
-
- #define INIT_STACK(beg, end) \
- { asm (".globl end"); \
- asm ("movel #end, sp"); \
- asm ("movel #0,a6"); }
-
- /* Push the frame pointer register on the stack. */
- #define PUSH_FRAME_PTR \
- asm ("movel a6,sp@-");
-
- /* Copy the top-of-stack to the frame pointer register. */
- #define POP_FRAME_PTR \
- asm ("movl sp@,a6");
-
- /* After KDB is entered by a fault, push all registers
- that GDB thinks about (all NUM_REGS of them),
- so that they appear in order of ascending GDB register number.
- The fault code will be on the stack beyond the last register. */
-
- #define PUSH_REGISTERS \
- { asm ("clrw -(sp)"); \
- asm ("pea sp@(10)"); \
- asm ("movem #0xfffe,sp@-"); }
-
- /* Assuming the registers (including processor status) have been
- pushed on the stack in order of ascending GDB register number,
- restore them and return to the address in the saved PC register. */
-
- #define POP_REGISTERS \
- { asm ("subil #8,sp@(28)"); \
- asm ("movem sp@,#0xffff"); \
- asm ("rte"); }
-