--- /dev/null
+/* Parameters for execution on a Matsushita mn10200 processor.
+ Copyright 1997 Free Software Foundation, Inc.
+
+ Contributed by Geoffrey Noer <noer@cygnus.com>
+
+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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#define TARGET_BYTE_ORDER LITTLE_ENDIAN
+
+#define REGISTER_SIZE 3
+#define MAX_REGISTER_RAW_SIZE REGISTER_SIZE
+#define NUM_REGS 12
+
+#define REGISTER_BYTES (NUM_REGS * REGISTER_SIZE)
+
+#define REGISTER_NAMES \
+{ "d0", "d1", "d2", "d3", "a0", "a1", "a2", "a3", \
+ "sp", "pc", "mdr", "psw"}
+
+#define FP_REGNUM 6
+#define SP_REGNUM 7
+#define PC_REGNUM 9
+#define MDR_REGNUM 10
+#define PSW_REGNUM 11
+#define LIR_REGNUM 12
+#define LAR_REGNUM 13
+
+#define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int
+
+#define REGISTER_BYTE(REG) ((REG) * REGISTER_SIZE)
+#define REGISTER_VIRTUAL_SIZE(REG) REGISTER_SIZE
+#define REGISTER_RAW_SIZE(REG) REGISTER_SIZE
+
+#define MAX_REGISTER_VIRTUAL_SIZE REGISTER_SIZE
+
+#define BREAKPOINT {0xff}
+
+#define FUNCTION_START_OFFSET 0
+
+#define DECR_PC_AFTER_BREAK 0
+
+#define INNER_THAN <
+
+#define SAVED_PC_AFTER_CALL(frame) \
+ read_memory_integer (read_register (SP_REGNUM), REGISTER_SIZE)
+
+#ifdef __STDC__
+struct frame_info;
+struct frame_saved_regs;
+struct type;
+struct value;
+#endif
+
+#define EXTRA_FRAME_INFO struct frame_saved_regs fsr;
+
+extern void mn10200_init_extra_frame_info PARAMS ((struct frame_info *fi));
+#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) mn10200_init_extra_frame_info (fi)
+#define INIT_FRAME_PC /* Not necessary */
+
+extern void mn10200_frame_find_saved_regs PARAMS ((struct frame_info *fi, struct frame_saved_regs *regaddr));
+#define FRAME_FIND_SAVED_REGS(fi, regaddr) regaddr = fi->fsr
+
+extern CORE_ADDR mn10200_frame_chain PARAMS ((struct frame_info *fi));
+#define FRAME_CHAIN(fi) mn10200_frame_chain (fi)
+#define FRAME_CHAIN_VALID(FP, FI) generic_frame_chain_valid (FP, FI)
+
+extern CORE_ADDR mn10200_find_callers_reg PARAMS ((struct frame_info *fi, int regnum));
+extern CORE_ADDR mn10200_frame_saved_pc PARAMS ((struct frame_info *));
+#define FRAME_SAVED_PC(FI) (mn10200_frame_saved_pc (FI))
+
+/* 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) \
+ memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), TYPE_LENGTH (TYPE))
+
+#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
+ extract_address (REGBUF + REGISTER_BYTE (0), \
+ REGISTER_RAW_SIZE (0))
+
+#define STORE_RETURN_VALUE(TYPE, VALBUF) \
+ write_register_bytes(REGISTER_BYTE (0), VALBUF, TYPE_LENGTH (TYPE));
+
+extern CORE_ADDR mn10200_skip_prologue PARAMS ((CORE_ADDR pc));
+#define SKIP_PROLOGUE(pc) pc = mn10200_skip_prologue (pc)
+
+#define FRAME_ARGS_SKIP 0
+
+#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
+#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
+#define FRAME_NUM_ARGS(val, fi) ((val) = -1)
+
+extern void mn10200_pop_frame PARAMS ((struct frame_info *frame));
+#define POP_FRAME mn10200_pop_frame (get_current_frame ())
+
+#define USE_GENERIC_DUMMY_FRAMES
+#define CALL_DUMMY {0}
+#undef CALL_DUMMY /* for now, no function calls */
+#define CALL_DUMMY_START_OFFSET (0)
+#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
+#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
+#define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
+#define CALL_DUMMY_ADDRESS() entry_point_address ()
+
+extern CORE_ADDR mn10200_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR));
+#define PUSH_RETURN_ADDRESS(PC, SP) mn10200_push_return_address (PC, SP)
+
+#define PUSH_DUMMY_FRAME generic_push_dummy_frame ()
+
+extern CORE_ADDR
+mn10200_push_arguments PARAMS ((int nargs, struct value **args, CORE_ADDR sp,
+ unsigned char struct_return,
+ CORE_ADDR struct_addr));
+#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
+ (SP) = mn10200_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)
+
+#define STORE_STRUCT_RETURN(STRUCT_ADDR, SP)
+
+#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP)
+
+#define USE_STRUCT_CONVENTION(GCC_P, TYPE) \
+ (TYPE_NFIELDS (TYPE) > 1 || TYPE_LENGTH (TYPE) > 4)
+
+/* override the default get_saved_register function with
+ one that takes account of generic CALL_DUMMY frames */
+#define GET_SAVED_REGISTER
+
+/* Define this for Wingdb */
+
+#define TARGET_MN10200
--- /dev/null
+/* Target-dependent code for the Matsushita MN10200 for GDB, the GNU debugger.
+ Copyright 1997 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include "defs.h"
+#include "frame.h"
+#include "inferior.h"
+#include "obstack.h"
+#include "target.h"
+#include "value.h"
+#include "bfd.h"
+#include "gdb_string.h"
+#include "gdbcore.h"
+#include "symfile.h"
+
+/* Info gleaned from scanning a function's prologue. */
+
+struct pifsr /* Info about one saved reg */
+{
+ int framereg; /* Frame reg (SP or FP) */
+ int offset; /* Offset from framereg */
+ int reg; /* Saved register number */
+};
+
+struct prologue_info
+{
+ int framereg;
+ int frameoffset;
+ int start_function;
+ struct pifsr *pifsrs;
+};
+
+/* Function: frame_chain
+ Figure out and return the caller's frame pointer given current
+ frame_info struct.
+
+ We start out knowing the current pc, current sp, current fp.
+ We want to determine the caller's fp and caller's pc. To do this
+ correctly, we have to be able to handle the case where we are in the
+ middle of the prologue which involves scanning the prologue.
+
+ We don't handle dummy frames yet but we would probably just return the
+ stack pointer that was in use at the time the function call was made?
+*/
+
+CORE_ADDR
+mn10200_frame_chain (fi)
+ struct frame_info *fi;
+{
+ struct prologue_info pi;
+ CORE_ADDR callers_pc, callers_fp, curr_sp;
+ CORE_ADDR past_prologue_addr;
+ int past_prologue = 1; /* default to being past prologue */
+ int n_movm_args = 4;
+
+ struct pifsr *pifsr, *pifsr_tmp;
+
+ /* current pc is fi->pc */
+ /* current fp is fi->frame */
+
+ /* current sp is: */
+ curr_sp = read_register (SP_REGNUM);
+
+/*
+ printf("curr pc = 0x%x ; curr fp = 0x%x ; curr sp = 0x%x\n",
+ fi->pc, fi->frame, curr_sp);
+*/
+
+ /* first inst after prologue is: */
+ past_prologue_addr = mn10200_skip_prologue (fi->pc);
+
+ /* Are we in the prologue? */
+ /* Yes if mn10200_skip_prologue returns an address after the
+ current pc in which case we have to scan prologue */
+ if (fi->pc < mn10200_skip_prologue (fi->pc))
+ past_prologue = 0;
+
+ /* scan prologue if we're not past it */
+ if (!past_prologue)
+ {
+ /* printf("scanning prologue\n"); */
+ /* FIXME -- fill out this case later */
+ return 0x666; /* bogus value */
+ }
+
+ if (past_prologue) /* if we don't need to scan the prologue */
+ {
+/* printf("we're past the prologue\n"); */
+ callers_pc = fi->frame - REGISTER_SIZE;
+ callers_fp = fi->frame - ((n_movm_args + 1) * REGISTER_SIZE);
+/*
+ printf("callers_pc = 0x%x ; callers_fp = 0x%x\n",
+ callers_pc, callers_fp);
+
+ printf("*callers_pc = 0x%x ; *callers_fp = 0x%x\n",
+ read_memory_integer(callers_pc, REGISTER_SIZE),
+ read_memory_integer(callers_fp, REGISTER_SIZE));
+*/
+ return read_memory_integer(callers_fp, REGISTER_SIZE);
+ }
+
+ /* we don't get here */
+}
+
+/* Function: find_callers_reg
+ Find REGNUM on the stack. Otherwise, it's in an active register.
+ One thing we might want to do here is to check REGNUM against the
+ clobber mask, and somehow flag it as invalid if it isn't saved on
+ the stack somewhere. This would provide a graceful failure mode
+ when trying to get the value of caller-saves registers for an inner
+ frame. */
+
+CORE_ADDR
+mn10200_find_callers_reg (fi, regnum)
+ struct frame_info *fi;
+ int regnum;
+{
+/* printf("mn10200_find_callers_reg\n"); */
+
+ for (; fi; fi = fi->next)
+ if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
+ return generic_read_register_dummy (fi->pc, fi->frame, regnum);
+ else if (fi->fsr.regs[regnum] != 0)
+ return read_memory_unsigned_integer (fi->fsr.regs[regnum],
+ REGISTER_RAW_SIZE(regnum));
+
+ return read_register (regnum);
+}
+
+/* Function: skip_prologue
+ Return the address of the first inst past the prologue of the function.
+*/
+
+CORE_ADDR
+mn10200_skip_prologue (pc)
+ CORE_ADDR pc;
+{
+ CORE_ADDR func_addr, func_end;
+
+/* printf("mn10200_skip_prologue\n"); */
+
+ /* See what the symbol table says */
+
+ if (find_pc_partial_function (pc, NULL, &func_addr, &func_end))
+ {
+ struct symtab_and_line sal;
+
+ sal = find_pc_line (func_addr, 0);
+
+ if (sal.line != 0 && sal.end < func_end)
+ return sal.end;
+ else
+ /* Either there's no line info, or the line after the prologue is after
+ the end of the function. In this case, there probably isn't a
+ prologue. */
+ return pc;
+ }
+
+/* We can't find the start of this function, so there's nothing we can do. */
+ return pc;
+}
+
+/* Function: pop_frame
+ This routine gets called when either the user uses the `return'
+ command, or the call dummy breakpoint gets hit. */
+
+void
+mn10200_pop_frame (frame)
+ struct frame_info *frame;
+{
+ int regnum;
+
+/* printf("mn10200_pop_frame start\n"); */
+
+ if (PC_IN_CALL_DUMMY(frame->pc, frame->frame, frame->frame))
+ generic_pop_dummy_frame ();
+ else
+ {
+ write_register (PC_REGNUM, FRAME_SAVED_PC (frame));
+
+ for (regnum = 0; regnum < NUM_REGS; regnum++)
+ if (frame->fsr.regs[regnum] != 0)
+ write_register (regnum,
+ read_memory_unsigned_integer (frame->fsr.regs[regnum],
+ REGISTER_RAW_SIZE(regnum)));
+
+ write_register (SP_REGNUM, FRAME_FP (frame));
+ }
+
+ flush_cached_frames ();
+
+/* printf("mn10200_pop_frame end\n"); */
+}
+
+/* Function: push_arguments
+ Setup arguments for a call to the target. Arguments go in
+ order on the stack.
+*/
+
+CORE_ADDR
+mn10200_push_arguments (nargs, args, sp, struct_return, struct_addr)
+ int nargs;
+ value_ptr *args;
+ CORE_ADDR sp;
+ unsigned char struct_return;
+ CORE_ADDR struct_addr;
+{
+ int argnum = 0;
+ int len = 0;
+ int stack_offset = 0; /* copy args to this offset onto stack */
+
+/* printf("mn10200_push_arguments start\n"); */
+
+ /* First, just for safety, make sure stack is aligned */
+ sp &= ~3;
+
+ /* Now make space on the stack for the args. */
+ for (argnum = 0; argnum < nargs; argnum++)
+ len += ((TYPE_LENGTH(VALUE_TYPE(args[argnum])) + 3) & ~3);
+
+ sp -= len;
+
+ /* Push all arguments onto the stack. */
+ for (argnum = 0; argnum < nargs; argnum++)
+ {
+ int len;
+ char *val;
+
+ if (TYPE_CODE (VALUE_TYPE (*args)) == TYPE_CODE_STRUCT
+ && TYPE_LENGTH (VALUE_TYPE (*args)) > 8)
+ {
+ /* for now, pretend structs aren't special */
+ len = TYPE_LENGTH (VALUE_TYPE (*args));
+ val = (char *)VALUE_CONTENTS (*args);
+ }
+ else
+ {
+ len = TYPE_LENGTH (VALUE_TYPE (*args));
+ val = (char *)VALUE_CONTENTS (*args);
+ }
+
+ while (len > 0)
+ {
+ write_memory (sp + stack_offset, val, 4);
+
+ len -= 4;
+ val += 4;
+ stack_offset += 4;
+ }
+ args++;
+ }
+
+/* printf"mn10200_push_arguments end\n"); */
+
+ return sp;
+}
+
+/* Function: push_return_address (pc)
+ Set up the return address for the inferior function call.
+ Needed for targets where we don't actually execute a JSR/BSR instruction */
+
+CORE_ADDR
+mn10200_push_return_address (pc, sp)
+ CORE_ADDR pc;
+ CORE_ADDR sp;
+{
+/* printf("mn10200_push_return_address\n"); */
+
+ /* write_register (RP_REGNUM, CALL_DUMMY_ADDRESS ()); */
+ return sp;
+}
+
+/* Function: frame_saved_pc
+ Find the caller of this frame. We do this by seeing if RP_REGNUM
+ is saved in the stack anywhere, otherwise we get it from the
+ registers. If the inner frame is a dummy frame, return its PC
+ instead of RP, because that's where "caller" of the dummy-frame
+ will be found. */
+
+CORE_ADDR
+mn10200_frame_saved_pc (fi)
+ struct frame_info *fi;
+{
+/* printf("mn10200_frame_saved_pc\n"); */
+
+ return (read_memory_integer(fi->frame - REGISTER_SIZE, REGISTER_SIZE));
+}
+
+void
+get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
+ char *raw_buffer;
+ int *optimized;
+ CORE_ADDR *addrp;
+ struct frame_info *frame;
+ int regnum;
+ enum lval_type *lval;
+{
+/* printf("get_saved_register\n"); */
+
+ generic_get_saved_register (raw_buffer, optimized, addrp,
+ frame, regnum, lval);
+}
+
+/* Function: init_extra_frame_info
+ Setup the frame's frame pointer, pc, and frame addresses for saved
+ registers. Most of the work is done in frame_chain().
+
+ Note that when we are called for the last frame (currently active frame),
+ that fi->pc and fi->frame will already be setup. However, fi->frame will
+ be valid only if this routine uses FP. For previous frames, fi-frame will
+ always be correct (since that is derived from v850_frame_chain ()).
+
+ We can be called with the PC in the call dummy under two circumstances.
+ First, during normal backtracing, second, while figuring out the frame
+ pointer just prior to calling the target function (see run_stack_dummy).
+*/
+
+void
+mn10200_init_extra_frame_info (fi)
+ struct frame_info *fi;
+{
+ struct prologue_info pi;
+ struct pifsr pifsrs[NUM_REGS + 1], *pifsr;
+ int reg;
+
+ if (fi->next)
+ fi->pc = FRAME_SAVED_PC (fi->next);
+
+ memset (fi->fsr.regs, '\000', sizeof fi->fsr.regs);
+
+ /* The call dummy doesn't save any registers on the stack, so we can return
+ now. */
+/*
+ if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
+ return;
+
+ pi.pifsrs = pifsrs;
+*/
+
+ /* v850_scan_prologue (fi->pc, &pi); */
+/*
+ if (!fi->next && pi.framereg == SP_REGNUM)
+ fi->frame = read_register (pi.framereg) - pi.frameoffset;
+
+ for (pifsr = pifsrs; pifsr->framereg; pifsr++)
+ {
+ fi->fsr.regs[pifsr->reg] = pifsr->offset + fi->frame;
+
+ if (pifsr->framereg == SP_REGNUM)
+ fi->fsr.regs[pifsr->reg] += pi.frameoffset;
+ }
+*/
+/* printf("init_extra_frame_info\n"); */
+}
+
+void
+_initialize_mn10200_tdep ()
+{
+/* printf("_initialize_mn10200_tdep\n"); */
+
+ tm_print_insn = print_insn_mn10200;
+}
+
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