/* Parameters for target machine ARC, for GDB, the GNU debugger.
- Copyright (C) 1995 Free Software Foundation, Inc.
+ Copyright 1995, 1996, 1998, 1999, 2000 Free Software Foundation, Inc.
Contributed by Cygnus Support.
-This file is part of GDB.
+ 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 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.
+ 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
/* Used by arc-tdep.c to set the default cpu type. */
#define DEFAULT_ARC_CPU_TYPE "base"
#define TARGET_BYTE_ORDER_SELECTABLE
/* We have IEEE floating point, if we have any float at all. */
-#define IEEE_FLOAT
+#define IEEE_FLOAT (1)
/* Offset from address of function to start of its code.
Zero on most machines. */
knows that the function has a frame. Its result is equal
to its input PC if the function is frameless, unequal otherwise. */
-#define SKIP_PROLOGUE(pc) \
- { pc = skip_prologue (pc, 0); }
-#define SKIP_PROLOGUE_FRAMELESS_P(pc) \
- { pc = skip_prologue (pc, 1); }
-extern CORE_ADDR skip_prologue PARAMS ((CORE_ADDR, int));
+#define SKIP_PROLOGUE(pc) (arc_skip_prologue (pc, 0))
+#define SKIP_PROLOGUE_FRAMELESS_P(pc) (arc_skip_prologue (pc, 1))
+extern CORE_ADDR arc_skip_prologue (CORE_ADDR, int);
/* Sequence of bytes for breakpoint instruction.
??? The current value is "sr -1,[-1]" and is for the simulator only.
#define BIG_BREAKPOINT { 0x12, 0x1f, 0xff, 0xff }
#define LITTLE_BREAKPOINT { 0xff, 0xff, 0x1f, 0x12 }
-/* ??? This value may eventually be correct (if/when proper breakpoints
- are added). Until then no value is correct so leave as is and cope. */
+/* Given the exposed pipeline, there isn't any one correct value.
+ However, this value must be 4. GDB can't handle any other value (other than
+ zero). See for example infrun.c:
+ "prev_pc != stop_pc - DECR_PC_AFTER_BREAK" */
+/* FIXME */
#define DECR_PC_AFTER_BREAK 8
/* We don't have a reliable single step facility.
??? We do have a cycle single step facility, but that won't work. */
-#define NO_SINGLE_STEP
+#define SOFTWARE_SINGLE_STEP_P 1
+extern void arc_software_single_step (unsigned int, int);
+#define SOFTWARE_SINGLE_STEP(sig,bp_p) arc_software_single_step (sig, bp_p)
+
+/* FIXME: Need to set STEP_SKIPS_DELAY. */
/* Given a pc value as defined by the hardware, return the real address.
Remember that on the ARC blink contains that status register which
/* Stack grows upward */
-#define INNER_THAN <
-
-/* Nonzero if instruction at pc is a return instruction.
- This is the "j [blink]" insn (with or without conditionals or delay
- slots). */
-
-#define ABOUT_TO_RETURN(pc) \
- ((read_memory_integer(pc, 4) & 0xffffff80) == 0x380f8000)
+#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
/* Say how long (ordinary) registers are. This is a piece of bogosity
used in push_word and a few other places; REGISTER_RAW_SIZE is the
/* Register numbers of various important registers (used to index
into arrays of register names and register values). */
-#define R0_REGNUM 0 /* First local register */
-#define R59_REGNUM 59 /* Last local register */
-#define FP_REGNUM 27 /* Contains address of executing stack frame */
-#define SP_REGNUM 28 /* stack pointer */
-#define BLINK_REGNUM 31 /* link register */
-#define STA_REGNUM 61 /* processor status word */
-#define PC_REGNUM 91 /* instruction pointer */
-#define AUX_BEG_REGNUM 61 /* aux reg begins */
-#define AUX_END_REGNUM 90 /* aux reg ends, pc not real aux reg */
+#define R0_REGNUM 0 /* First local register */
+#define R59_REGNUM 59 /* Last local register */
+#define FP_REGNUM 27 /* Contains address of executing stack frame */
+#define SP_REGNUM 28 /* stack pointer */
+#define BLINK_REGNUM 31 /* link register */
+#define STA_REGNUM 61 /* processor status word */
+#define PC_REGNUM 91 /* instruction pointer */
+#define AUX_BEG_REGNUM 61 /* aux reg begins */
+#define AUX_END_REGNUM 90 /* aux reg ends, pc not real aux reg */
/* Fake registers used to mark immediate data. */
#define SHIMM_FLAG_REGNUM 61
0 \
} \
}
-
-#define PFP_REGNUM R0_REGNUM /* Previous frame pointer */
+
+#define PFP_REGNUM R0_REGNUM /* Previous frame pointer */
/* Total amount of space needed to store our copies of the machine's
register state, the array `registers'. */
/* Return the GDB type object for the "standard" data type
of data in register N. */
#define REGISTER_VIRTUAL_TYPE(N) (builtin_type_int)
-
\f
+
/* Macros for understanding function return values... */
/* Does the specified function use the "struct returning" convention
a function return value of type TYPE, and copy that, in virtual format,
into VALBUF. This is only called if USE_STRUCT_CONVENTION for this
type is 0.
-*/
+ */
#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
memcpy(VALBUF, REGBUF+REGISTER_BYTE(R0_REGNUM), TYPE_LENGTH (TYPE))
subroutine will return. This is called from call_function. */
#define STORE_STRUCT_RETURN(ADDR, SP) \
error ("Returning values from functions is not implemented in arc gdb")
-
\f
+
/* Describe the pointer in each stack frame to the previous stack frame
(its caller). */
/* FRAME_CHAIN_VALID returns zero if the given frame is the outermost one
and has no caller. */
-#define FRAME_CHAIN_VALID(chain, thisframe) ((chain) != 0)
+#define FRAME_CHAIN_VALID(chain, thisframe) nonnull_frame_chain_valid (chain, thisframe)
-/* 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. */
+/* An expression that tells us whether the function invocation represented
+ by FI does not have a frame on the stack associated with it. */
-#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
- do { \
- if ((FI)->signal_handler_caller) \
- (FRAMELESS) = 0; \
- else \
- (FRAMELESS) = frameless_look_for_prologue (FI); \
- } while (0)
+#define FRAMELESS_FUNCTION_INVOCATION(FI) \
+ (((FI)->signal_handler_caller) ? 0 : frameless_look_for_prologue (FI))
/* Where is the PC for a specific frame.
A leaf function may never save blink, so we have to check for that here. */
#define FRAME_SAVED_PC(frame) (arc_frame_saved_pc (frame))
-struct frame_info; /* in case frame.h not included yet */
-CORE_ADDR arc_frame_saved_pc PARAMS ((struct frame_info *));
+struct frame_info; /* in case frame.h not included yet */
+CORE_ADDR arc_frame_saved_pc (struct frame_info *);
/* If the argument is on the stack, it will be here.
We cache this value in the frame info if we've already looked it up. */
/* Set NUMARGS to the number of args passed to a frame.
Can return -1, meaning no way to tell. */
-#define FRAME_NUM_ARGS(numargs, fi) (numargs = -1)
+#define FRAME_NUM_ARGS(fi) (-1)
/* Return number of bytes at start of arglist that are not really args. */
#define FRAME_FIND_SAVED_REGS(frame_info_addr, sr) \
frame_find_saved_regs (frame_info_addr, &sr)
-extern void frame_find_saved_regs(); /* See arc-tdep.c */
-
+extern void frame_find_saved_regs (); /* See arc-tdep.c */
\f
+
/* Things needed for making calls to functions in the inferior process */
+void arc_push_dummy_frame (void);
#define PUSH_DUMMY_FRAME \
- push_dummy_frame ()
+ arc_push_dummy_frame ()
/* Discard from the stack the innermost frame, restoring all registers. */
+void arc_pop_frame (void);
#define POP_FRAME \
- pop_frame ()
+ arc_pop_frame ()
/* This sequence of words is the instructions bl xxxx, flag 1 */
-#define CALL_DUMMY { 0x28000000, 0x1fbe8001 }
+#define CALL_DUMMY { 0x28000000, 0x1fbe8001 }
#define CALL_DUMMY_LENGTH 8
/* Start execution at beginning of dummy */
-#define CALL_DUMMY_START_OFFSET 0
+#define CALL_DUMMY_START_OFFSET 0
/* Insert the specified number of args and function address
- into a call sequence of the above form stored at 'dummyname'.*/
+ into a call sequence of the above form stored at 'dummyname'. */
#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
{ \
int from, to, delta, loc; \
*((char *)(dummyname) + 3) = ((delta >> 9) & 0xff); \
*((char *)(dummyname) + 4) = ((delta >> 17) & 0x7); \
}
-
projects / thirdparty / binutils-gdb.git / blobdiff