/* Forward data declarations */
extern struct target_ops sim_ops; /* Forward declaration */
-/* Forward function declarations */
-static void sim_fetch_registers ();
-static void sim_close ();
-
void sim_store_register();
-
void sim_set_oc();
unsigned char *myaddr;
int len;
{
-return sim_write(memaddr, myaddr, len);
+ sim_write(memaddr, myaddr, len);
+ return 1;
}
-static int
+static void
store_register(regno)
int regno;
{
{
sim_store_register(regno,read_register(regno));
}
- return 0;
}
/* This is called not only when we first attach, but also when the
user types "run" after having attached. */
-void
+static void
sim_create_inferior (execfile, args, env)
char *execfile;
char *args;
char **env;
{
int entry_pt;
- char buffer[100];
if (args && *args)
error ("Can't pass arguments to remote sim process.");
entry_pt = (int) bfd_get_start_address (exec_bfd);
-
-
sim_kill(NULL,NULL);
sim_clear_breakpoints();
init_wait_for_inferior ();
-
-
-
- insert_breakpoints (); /* Needed to get correct instruction in cache */
+ insert_breakpoints ();
proceed(entry_pt, -1, 0);
}
sim_close (quitting)
int quitting;
{
-
-
- /* Clear any break points */
sim_clear_breakpoints();
-
- /* Put this port back into REMOTE mode */
- sleep(1); /* Let any output make it all the way back */
}
/* Terminate the open connection to the remote debugger.
Use this when you want to detach and do something else
with your gdb. */
-int
+static void
sim_detach (args,from_tty)
char *args;
int from_tty;
pop_target(); /* calls sim_close to do the real work */
if (from_tty)
printf_filtered ("Ending remote %s debugging\n", target_shortname);
- return 0;
}
/* Tell the remote machine to resume. */
sim_wait (status)
WAITTYPE *status;
{
-
-*status = sim_stop_signal();
-return 0;
-}
-
-/* Return the name of register number REGNO
- in the form input and output by sim.
-
- Returns a pointer to a static buffer containing the answer. */
-static char *
-get_reg_name (regno)
- int regno;
-{
- static char *rn[NUM_REGS]= REGISTER_NAMES;
- return rn[regno];
+ *status = sim_stop_signal();
+ return 0;
}
-
-
-
/* Get ready to modify the registers array. On machines which store
individual registers, this doesn't need to do anything. On machines
which store all the registers in one fell swoop, this makes sure
that registers contains all the registers from the program being
debugged. */
-void
+static void
sim_prepare_to_store ()
{
/* Do nothing, since we can store individual regs */
}
-static CORE_ADDR
-translate_addr(addr)
-CORE_ADDR addr;
-{
-
- return(addr);
-
-}
-
-/* Read a word from remote address ADDR and return it.
- * This goes through the data cache.
- */
-int
-sim_fetch_word (addr)
- CORE_ADDR addr;
-{
-/* return dcache_fetch (addr);*/
-}
-
static void
fetch_register(regno)
void
sim_before_main_loop ()
{
- char ttyname[100];
- char *p, *p2;
- extern FILE *instream;
- extern jmp_buf to_top_level;
-
push_target (&sim_ops);
}
-#define MAX_BREAKS 16
-static int num_brkpts=0;
-static int
-sim_insert_breakpoint(addr, save)
-CORE_ADDR addr;
-char *save; /* Throw away, let sim save instructions */
-{
- abort();
-}
-static int
-sim_remove_breakpoint(addr, save)
-CORE_ADDR addr;
-char *save; /* Throw away, let sim save instructions */
-{
- abort();
-}
-
/* Clear the sims notion of what the break points are */
-static int
+static void
sim_mourn()
{
sim_clear_breakpoints();
generic_mourn_inferior ();
- return 0;
}
-static int rem_resume(a,b)
+static void rem_resume(a,b)
+int a;
+int b;
{
sim_resume(a,b);
- return 0;
}
/* Define the target subroutine names */
--- /dev/null
+/* Parameters for execution on a z8000 series machine.
+ Copyright 1992 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 IEEE_FLOAT 1
+
+#undef TARGET_INT_BIT
+#undef TARGET_LONG_BIT
+#undef TARGET_SHORT_BIT
+#undef TARGET_PTR_BIT
+
+#define TARGET_SHORT_BIT 16
+#define TARGET_INT_BIT 16
+#define TARGET_LONG_BIT 32
+#define TARGET_PTR_BIT (BIG ? 32: 16)
+
+/* Define the bit, byte, and word ordering of the machine. */
+#define TARGET_BYTE_ORDER BIG_ENDIAN
+
+/* 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(ip) {(ip) = z8k_skip_prologue(ip);}
+extern CORE_ADDR mz8k_skip_prologue PARAMS ((CORE_ADDR ip));
+
+
+/* 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) saved_pc_after_call(frame)
+
+/* Stack grows downward. */
+
+#define INNER_THAN <
+
+/* Sequence of bytes for breakpoint instruction. */
+
+#define BREAKPOINT {0x36,0x00}
+
+/* If your kernel resets the pc after the trap happens you may need to
+ define this before including this file. */
+
+#define DECR_PC_AFTER_BREAK 0
+
+/* Nonzero if instruction at PC is a return instruction. */
+/* Allow any of the return instructions, including a trapv and a return
+ from interupt. */
+
+#define ABOUT_TO_RETURN(pc) about_to_return(pc)
+
+/* Return 1 if P points to an invalid floating point value. */
+
+#define INVALID_FLOAT(p, len) 0 /* Just a first guess; not checked */
+
+/* Say how long registers are. */
+
+#define REGISTER_TYPE unsigned int
+
+#define NUM_REGS 23 /* 16 registers + 1 ccr + 1 pc + 3 debug
+ regs + fake fp + fake sp*/
+#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 z8k, all but the pc are 2 bytes, but we
+ keep them all as 4 bytes and trim them on I/O */
+
+
+#define REGISTER_RAW_SIZE(N) (((N) < 16)? 2:4)
+
+/* Number of bytes of storage in the program's representation
+ for register N. */
+
+#define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N)
+
+/* 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) \
+ register_convert_to_virtual(REGNUM, FROM, TO)
+
+/* Convert data from virtual format for register REGNUM
+ to raw format for register REGNUM. */
+
+#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \
+ register_convert_to_raw(REGNUM, FROM, TO)
+
+/* Return the GDB type object for the "standard" data type
+ of data in register N. */
+
+#define REGISTER_VIRTUAL_TYPE(N) \
+ (REGISTER_VIRTUAL_SIZE(N) == 2? builtin_type_unsigned_int : builtin_type_long)
+
+/*#define INIT_FRAME_PC(x,y) init_frame_pc(x,y)*/
+/* Initializer for an array of names of registers.
+ Entries beyond the first NUM_REGS are ignored. */
+
+#define REGISTER_NAMES \
+ {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
+ "ccr", "pc", "cycles","insts","time","fp","sp"}
+
+/* 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 CCR_REGNUM 16 /* Contains processor status */
+#define PC_REGNUM 17 /* Contains program counter */
+#define CYCLES_REGNUM 18
+#define INSTS_REGNUM 19
+#define TIME_REGNUM 20
+#define FP_REGNUM 21 /* Contains fp, whatever memory model */
+#define SP_REGNUM 22 /* Conatins sp, whatever memory model */
+
+
+
+
+
+
+
+#define PTR_SIZE (BIG ? 4: 2)
+#define PTR_MASK (BIG ? 0xff00ffff : 0x0000ffff)
+/* 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) store_struct_return(ADDR,SP)
+
+/* 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. This is assuming that floating point values are returned
+ as doubles in d0/d1. */
+
+
+#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
+ extract_return_value(TYPE,REGBUF,VALBUF)
+
+/* Write into appropriate registers a function return value
+ of type TYPE, given in virtual format. Assumes floats are passed
+ in d0/d1. */
+
+#define STORE_RETURN_VALUE(TYPE,VALBUF) 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) (*(CORE_ADDR *)(REGBUF))
+\f
+/* 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.
+ In the case of the 68000, the frame's nominal address
+ is the address of a 4-byte word containing the calling frame's address. */
+
+#define FRAME_CHAIN(thisframe) 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. */
+#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
+ (FRAMELESS) = frameless_look_for_prologue(FI)
+
+#define FRAME_SAVED_PC(FRAME) frame_saved_pc(FRAME)
+
+#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. */
+#if !defined (FRAME_NUM_ARGS)
+#define FRAME_NUM_ARGS(val,fi) (val = -1)
+#endif
+
+/* Return number of bytes at start of arglist that are not really args. */
+
+#define FRAME_ARGS_SKIP 8
+
+
+\f
+/* Things needed for making the inferior call functions.
+ It seems like every m68k based machine has almost identical definitions
+ in the individual machine's configuration files. Most other cpu types
+ (mips, i386, etc) have routines in their *-tdep.c files to handle this
+ for most configurations. The m68k family should be able to do this as
+ well. These macros can still be overridden when necessary. */
+
+/* The CALL_DUMMY macro is the sequence of instructions, as disassembled
+ by gdb itself:
+
+ fmovemx fp0-fp7,sp@- 0xf227 0xe0ff
+ moveml d0-a5,sp@- 0x48e7 0xfffc
+ clrw sp@- 0x4267
+ movew ccr,sp@- 0x42e7
+
+ /..* 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 @#0x32323232 0x4eb9 0x3232 0x3232
+ addal #0x69696969,sp 0xdffc 0x6969 0x6969
+ trap #<your BPT_VECTOR number here> 0x4e4?
+ nop 0x4e71
+
+ Note this is CALL_DUMMY_LENGTH bytes (28 for the above example).
+ 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 { 0 }
+#define CALL_DUMMY_LENGTH 24 /* Size of CALL_DUMMY */
+#define CALL_DUMMY_START_OFFSET 8 /* Offset to jsr instruction*/
+
+
+/* Insert the specified number of args and function address
+ into a call sequence of the above form stored at DUMMYNAME.
+ We use the BFD routines to store a big-endian value of known size. */
+
+#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
+{ _do_putb32 (fun, (char *) dummyname + CALL_DUMMY_START_OFFSET + 2); \
+ _do_putb32 (nargs*4, (char *) dummyname + CALL_DUMMY_START_OFFSET + 8); }
+
+/* Push an empty stack frame, to record the current PC, etc. */
+
+#define PUSH_DUMMY_FRAME { z8k_push_dummy_frame (); }
+
+extern void z8k_push_dummy_frame PARAMS ((void));
+
+extern void z8k_pop_frame PARAMS ((void));
+
+/* Discard from the stack the innermost frame, restoring all registers. */
+
+#define POP_FRAME { z8k_pop_frame (); }
+
+/* Offset from SP to first arg on stack at first instruction of a function */
+
+#define SP_ARG0 (1 * 4)
+
+#define ADDR_BITS_REMOVE(x) addr_bits_remove(x)
+#define ADDR_BITS_SET(x) addr_bits_set(x)
+int z8001_mode;
+#define BIG (z8001_mode)
+
+#define read_memory_short(x) (read_memory_integer(x,2) & 0xffff)
+
+#define NO_STD_REGS
+
+
+
+#define PRINT_REGISTER_HOOK(regno) print_register_hook(regno)
+
+
+/* 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
+
+#define ADDITIONAL_OPTIONS {"z8001",no_argument,&z8001_mode, 1},
projects / binutils-gdb.git / commitdiff