-/* Parameters for execution on the Intel I860 for GDB, the GNU debugger.
- Copyright (C) 1986, 1987 Free Software Foundation, Inc.
-
-GDB is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY. No author or distributor accepts responsibility to anyone
-for the consequences of using it or for whether it serves any
-particular purpose or works at all, unless he says so in writing.
-Refer to the GDB General Public License for full details.
-
-Everyone is granted permission to copy, modify and redistribute GDB,
-but only under the conditions described in the GDB General Public
-License. A copy of this license is supposed to have been given to you
-along with GDB so you can know your rights and responsibilities. It
-should be in a file named COPYING. Among other things, the copyright
-notice and this notice must be preserved on all copies.
-
-In other words, go ahead and share GDB, but don't try to stop
-anyone else from sharing it farther. Help stamp out software hoarding!
-*/
-
-#ifndef i860
-#define i860 1
-#endif
-
-#define HAVE_TERMIO
-#define vfork fork
-
-/* Debugger information will be in COFF format. */
-
-/* #define COFF_FORMAT */
-#define COFF_NO_LONG_FILE_NAMES
-
-/* Offset from address of function to start of its code.
- Zero on most machines. */
-
-#define FUNCTION_START_OFFSET 0
-
-/* The call instruction puts its return address in register r1 and does
- not change the stack pointer */
-
-#define RETURN_ADDR_IN_REGISTER
-
-/* Advance PC across any function entry prologue instructions
- to reach some "real" code. */
-
-#define SKIP_PROLOGUE(pc) \
- { pc = skip_prologue (pc); }
-
-/* 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_register(RP_REGNUM))
-
-/* Address of end of stack space. */
-
-#define STACK_END_ADDR 0xfc000000
-
-/* Stack grows downward. */
-
-#define INNER_THAN <
-
-/* Stack has strict alignment. */
-
-#define ALIGN_STACK(ADDR) (((ADDR)+15)&-16)
-
-
-/* Sequence of bytes for breakpoint instruction. */
-#if defined(i860) && defined(BIG_ENDIAN)
-#define BREAKPOINT {0x44, 0x00, 0x00, 0x00}
-#define BREAKFLOAT {0x22, 0x06, 0x00, 0x48}
-#else
-#define BREAKPOINT {0x00, 0x00, 0x00, 0x44}
-#define BREAKFLOAT {0x48, 0x00, 0x06, 0x22}
-#endif
-/* 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. */
-/* should be "bri r1" */
-#define ABOUT_TO_RETURN(pc) \
- (adj_read_memory_integer (pc) == 0x40000800)
-
-
-/* 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 i860REGCOUNT
-
-/* Initializer for an array of names of registers.
- There should be NUM_REGS strings in this initializer. */
-#define REGISTER_NAMES \
-{ \
-"psr", "fir", "trap", "dbrk", \
-"r0", "r1", "sp", "fp", "r4", "r5", "r6", "r7", \
-"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
-"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
-"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \
- \
-"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", \
- \
-"fsr", \
-"fsr1", "fsr2", "fsr3", \
-"mul1", "", "mul2", "", "mul3", "", \
-"add1", "", "add2", "", "add3", "", \
-"KI", "", "KR", "", "T", "", \
-"MERGE", "", \
-"pfld1", "", "", "", "pfld2", "", "", "", "pfld3", "", "", "", \
-"graph1", "", \
-"fpe_fp1","", "fpe_fp2", "", "fpe_fp3", "", \
-"fpe_fp4", "", \
-"ieee_stat", "fpe_trapped_op", \
-"fpe_fp5","", "fpe_fp6", "", \
-"fpe_rfsr", "","","", \
-"epsr", \
-"ccr", "bear", "err" \
-}
-/* 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 RP_REGNUM R1 /* Contains return address value */
-#define SP_REGNUM SP /* Contains address of top of stack, */
-#define FP_REGNUM FP /* Contains address of executing stack frame */
- /* which is also the bottom of the frame. */
-#define RTRN RP_REGNUM
-#define R_FP FP /* used by dwarfread.c */
-#define Y_REGNUM R31 /* Temp register for address calc., etc. */
-#define PC_REGNUM PC /* Contains program counter */
-#define PS_REGNUM PSR /* Contains processor status */
-#define FP0_REGNUM FREGS /* Floating point register 0 */
-#define FPS_REGNUM FSR /* Floating point status register */
-#define DB_REGNUM DB /* Debug register */
-
-/* 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 the i860, 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 the i860, all regs are 4 bytes. */
-
-#define REGISTER_VIRTUAL_SIZE(N) (4)
-
-/* 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. */
-
-#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) \
- ((N) < F0 ? builtin_type_int : (N) <= F31 ? builtin_type_float : 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 (R16, (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) \
- i860_extract_return_value(TYPE, REGBUF, VALBUF)
-
-/* Write into appropriate registers a function return value
- of type TYPE, given in virtual format. */
-/* On i860, values are returned in register r16. */
-#define STORE_RETURN_VALUE(TYPE,VALBUF) \
- i860_store_return_value(TYPE, VALBUF)
-
-/* 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) + REGISTER_BYTE(R16)))
-
-\f
-/* Describe the pointer in each stack frame to the previous stack frame
- (its caller). */
-#include <sys/types.h>
-#include <sys/regset.h>
-#include "i860_reg.h"
-
-/* 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 i860, the frame-chain's nominal address
- is held in the frame pointer register.
-
- On the i860 the frame (in %fp) points to %fp for the previous frame.
- */
-
-/* our FRAME_CHAIN requires a pointer to all the frame info (e.g. pc)
-
- */
-
-#define FRAME_CHAIN(thisframe) frame_chain(thisframe)
-
-#define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
-
-/* Define other aspects of the stack frame. */
-
-#define FRAME_SAVED_PC(frame_struct) frame_saved_pc(frame_struct)
-
-#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 */
-
-#define FRAME_NUM_ARGS(val,fi) (val = -1)
-
-#define FRAME_STRUCT_ARGS_ADDRESS(fi) ((fi)->frame)
-
-/* extra stuff in frame structure to support
- * backtraceing thru non fp frame based frames
- * (trace stuff thats not -g compiled)
- */
-
-#define EXTRA_FRAME_INFO int is_minus_g; CORE_ADDR sp; CORE_ADDR rp;
-
-#define INIT_EXTRA_FRAME_INFO(fromleaf,fci) (fci)->is_minus_g = 0; (fci)->sp = 0; (fci)->rp = 0;
-
-/* 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. */
-
-/* Grind through the various st.l rx,Y(fp) and fst.z fx,Y(fp) */
-
-#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
- frame_find_saved_regs(frame_info, &(frame_saved_regs))
-\f
-/* Things needed for making the inferior call functions. */
-
-/* Push an empty stack frame, to record the current PC, etc. */
-/* We have this frame with fp pointing to a block where all GDB-visible
- registers are stored in the order GDB knows them, and sp at the next
- alignment point below fp. Note: fp + NUM_REGS*4 was the old sp
- */
-
-#define PUSH_DUMMY_FRAME i860_push_frame()
-
-/* Discard from the stack the innermost frame,
- restoring all saved registers. */
-
-#define POP_FRAME i860_pop_frame()
-
-/* This sequence of words is the instructions:
- *../
---
- nop
- calli r31
- nop
- trap r0,r0,r0
---
-Note this is 16 bytes.
-Saving of the registers is done by PUSH_DUMMY_FRAME. The address of the
-function to call will be placed in register r31 prior to starting.
-The arguments have to be put into the parameter registers by GDB after
-the PUSH_DUMMY_FRAME is done. NOTE: GDB expects to push arguments, but
-i860 takes them in registers */
-#ifdef BIG_ENDIAN
-/* account for reversal of instructions in memory */
-
-#define CALL_DUMMY { \
- 0x4c00f802, 0xa0000000, 0x44000000, 0xa0000000 }
-#else
-#define CALL_DUMMY { \
- 0xa0000000, 0x4c00F802, 0xa0000000, 0x44000000 }
-#endif
-
-/* This setup is somewhat unusual. PUSH_DUMMY_FRAME and
- FRAME_FIND_SAVED_REGS conspire to handle dummy frames differently.
- Therefore, CALL_DUMMY can be minimal. We put the address of the called
- function in r31 and let'er rip */
-
-#define CALL_DUMMY_LENGTH 16
-
-/* Actually start at the calli */
-
-#define CALL_DUMMY_START_OFFSET 4
-
-/* Normally, GDB will patch the dummy code here to put in the function
- address, etc., but we only need to put the call adddress in r31 */
-#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
- write_register(R31, fun)
-
-\f
-/* i860 has no reliable single step ptrace call */
-
-#define NO_SINGLE_STEP 1
-
-#define KERNEL_U_ADDR 0xfc7fe530
-#define REGISTER_U_ADDR(addr,ar0,regno) \
- addr = (REGISTER_BYTE(regno) + ar0 );
-
-/* How many bytes are pushed on the stack for the argument list
- */
-#define STACK_ARG_BYTES(RESULT,ARGS,NARGS,STRUCT_RETURN) {(RESULT) = 0;}
-
-/* Pass arguments to a function
- */
-
-#define PUSH_ARGUMENTS(NARGS,ARGS,STACKP,STRUCT_RETURN,STRUCT_ADDR) \
- { \
- STACKP = (STACKP) & (-16); \
- STACKP = i860_arg_coerce(NARGS, ARGS, STRUCT_RETURN,STACKP); \
- STACKP =pass_function_arguments(ARGS,NARGS,STRUCT_RETURN, STRUCT_ADDR, STACKP); }
-
-#define CALL_DUMMY_LOCATION AFTER_TEXT_END
-
-#define NEED_TEXT_START_END
-
-#define NONSTANDARD_MEMORY_LAYOUT
-
-/* We support pseudo-frame structure so actual frame pointer value must be
- * read from the register.
- */
-#define FP_FROM_REGISTER
-
-/* Support a quit from info register command because we have so many regs
- */
-#define INFO_REGISTER_QUIT
-
-/* Identify text or absolute symbols to put in misc function table. In the
- * i860 case, only text symbols not starting with _L00
- */
-#define MISC_FUNCTION(cs) ((cs)->c_secnum == 1 && (cs)->c_value && \
- strncmp((cs)->c_name, "_L00", 4) != 0)
-
-/* Define our a.out magic number and undefine the 386 one if it's defined
- */
-#ifdef I860MAGIC
-#define AOUT_MAGIC I860MAGIC
-#else
-#define AOUT_MAGIC 0515
-#endif
-
-#ifdef I386MAGIC
-#undef I386MAGIC
-#endif
-
-/* The aouthdr may be larger than defined in a.out.h
- */
-#define AOUTHDR_VARIABLE
-
-/* We have a bug where lineno information is not in symbol table correctly
- */
-#define LINENO_BUG
-
-/* Similarly, the Endndx of a structure definition is bogus in ld860
- */
- /* #define STRUCT_SYMBOL_BUG */
-
-/* Also, we see T_ARG types when we shouldn't
- */
-#define T_ARG_BUG
-
-/* Macro to sign extend to 32 bits */
-#define SIGN_EXT(n,x) (((int) (x) << (32-n)) >> (32-n))
-
-#define SIGN_EXT16(x) (((int) (x) << (16)) >> (16))
-
-#define FRAMELESS_FUNCTION_INVOCATION(FI,FRAMELESS) frameless_look_for_prologue(FI)
-#if defined(i860) && defined(BIG_ENDIAN)
-#define ADJ_PC(pc) ((unsigned)pc ^ 4)
-#define ADJ_FREG(freg) (F0 + (((freg) - F0) ^ 1))
-#define ADJ_FREG_BYTE(freg) (REGISTER_BYTE(F0) + (((freg) - REGISTER_BYTE(F0)) ^ REGISTER_BYTE(1)))
-#else
-#define ADJ_PC(pc) (pc)
-#define ADJ_FREG(freg) (freg)
-#define ADJ_FREG_BYTE(freg) (freg)
-#endif
-/* define DO_REGISTERS_INFO to do i860-specific formatting */
-#define DO_REGISTERS_INFO(regnum,fpregs) i860_do_registers_info(regnum,fpregs)
-/* the two low order bits of the return pointer are ignored when returning; some systems store information
- in them. To avoid confusing the stack trace, provide this macro to "clean" the two low order bits */
-#define CLEAN_PC(pc) ((unsigned) pc & 0xfffffffc)
-#define adj_target_read_memory(memaddr,myaddr,len) target_read_memory(ADJ_PC(memaddr),myaddr,len)
-#define adj_target_write_memory(memaddr,myaddr,len) target_write_memory(ADJ_PC(memaddr),myaddr,len)
-#define adj_read_memory_integer(memaddr) read_memory_integer(ADJ_PC(memaddr),4)
-#define adj_read_memory(memaddr,myaddr,len) read_memory(ADJ_PC(memaddr),myaddr,len)
-#define adj_write_memory(memaddr,myaddr,len) write_memory(ADJ_PC(memaddr),myaddr,len)
-#define INIT_FRAME_PC(fromleaf, prev) \
- { struct frame_info *nextframe = prev->next; \
- if (nextframe->rp) \
- { prev->pc = CLEAN_PC( nextframe ->rp); \
- prev->rp = 0; } \
- else prev->pc = CLEAN_PC((fromleaf ? SAVED_PC_AFTER_CALL (prev->next) : \
- prev->next ? FRAME_SAVED_PC (prev->next) : read_pc ())); }
-
-#define INTERNAL_REGISTER_VAL(regno) regno+R0
-/* used to indicate that the misc function vector has size information about
- misc functions -- currently true for elf format only -- mlf */
-#define MISC_FUNCTIONS_HAS_SIZE
-#define FRAME_GET_BASEREG_VALUE(frame,basereg) get_saved_basereg(frame, basereg);
-
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