Wed Jan 22 01:31:16 1997 Geoffrey Noer <noer@cygnus.com>
Start mn10200 gdb port by adding copies of mn10300
target-specific files with all instances of mn10300 changed
to mn10200 to start with.
* mn10200-tdep.c: new
* config/mn10200/tm-mn10200.h: new, REGISTER_SIZE is 24 bits not 32,
SP_REGNUM and FP_REGNUM are different, also no lar or lir.
* config/mn10200/mn10200.mt: new
This commit is contained in:
Geoffrey Noer
parent
95b475477e
commit
879b939859
4 changed files with 539 additions and 0 deletions
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@ -1,3 +1,13 @@
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Wed Jan 22 01:31:16 1997 Geoffrey Noer <noer@cygnus.com>
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Start mn10200 gdb port by adding copies of mn10300
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target-specific files with all instances of mn10300 changed
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to mn10200 to start with.
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* mn10200-tdep.c: new
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* config/mn10200/tm-mn10200.h: new, REGISTER_SIZE is 24 bits not 32,
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SP_REGNUM and FP_REGNUM are different, also no lar or lir.
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* config/mn10200/mn10200.mt: new
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Tue Jan 21 18:32:23 1997 Stu Grossman (grossman@lisa.cygnus.com)
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Tue Jan 21 18:32:23 1997 Stu Grossman (grossman@lisa.cygnus.com)
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* configure.in configure: Check if host has libdl if doing
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* configure.in configure: Check if host has libdl if doing
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6
gdb/config/mn10200/mn10200.mt
Normal file
6
gdb/config/mn10200/mn10200.mt
Normal file
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@ -0,0 +1,6 @@
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# Target: Matsushita mn10200
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TDEPFILES= mn10200-tdep.o
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TM_FILE= tm-mn10200.h
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SIM_OBS = remote-sim.o
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SIM = ../sim/mn10200/libsim.a -lm
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145
gdb/config/mn10200/tm-mn10200.h
Normal file
145
gdb/config/mn10200/tm-mn10200.h
Normal file
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@ -0,0 +1,145 @@
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/* Parameters for execution on a Matsushita mn10200 processor.
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Copyright 1997 Free Software Foundation, Inc.
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Contributed by Geoffrey Noer <noer@cygnus.com>
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#define TARGET_BYTE_ORDER LITTLE_ENDIAN
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#define REGISTER_SIZE 3
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#define MAX_REGISTER_RAW_SIZE REGISTER_SIZE
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#define NUM_REGS 12
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#define REGISTER_BYTES (NUM_REGS * REGISTER_SIZE)
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#define REGISTER_NAMES \
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{ "d0", "d1", "d2", "d3", "a0", "a1", "a2", "a3", \
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"sp", "pc", "mdr", "psw"}
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#define FP_REGNUM 6
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#define SP_REGNUM 7
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#define PC_REGNUM 9
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#define MDR_REGNUM 10
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#define PSW_REGNUM 11
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#define LIR_REGNUM 12
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#define LAR_REGNUM 13
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#define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int
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#define REGISTER_BYTE(REG) ((REG) * REGISTER_SIZE)
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#define REGISTER_VIRTUAL_SIZE(REG) REGISTER_SIZE
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#define REGISTER_RAW_SIZE(REG) REGISTER_SIZE
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#define MAX_REGISTER_VIRTUAL_SIZE REGISTER_SIZE
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#define BREAKPOINT {0xff}
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#define FUNCTION_START_OFFSET 0
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#define DECR_PC_AFTER_BREAK 0
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#define INNER_THAN <
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#define SAVED_PC_AFTER_CALL(frame) \
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read_memory_integer (read_register (SP_REGNUM), REGISTER_SIZE)
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#ifdef __STDC__
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struct frame_info;
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struct frame_saved_regs;
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struct type;
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struct value;
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#endif
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#define EXTRA_FRAME_INFO struct frame_saved_regs fsr;
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extern void mn10200_init_extra_frame_info PARAMS ((struct frame_info *fi));
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#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) mn10200_init_extra_frame_info (fi)
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#define INIT_FRAME_PC /* Not necessary */
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extern void mn10200_frame_find_saved_regs PARAMS ((struct frame_info *fi, struct frame_saved_regs *regaddr));
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#define FRAME_FIND_SAVED_REGS(fi, regaddr) regaddr = fi->fsr
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extern CORE_ADDR mn10200_frame_chain PARAMS ((struct frame_info *fi));
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#define FRAME_CHAIN(fi) mn10200_frame_chain (fi)
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#define FRAME_CHAIN_VALID(FP, FI) generic_frame_chain_valid (FP, FI)
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extern CORE_ADDR mn10200_find_callers_reg PARAMS ((struct frame_info *fi, int regnum));
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extern CORE_ADDR mn10200_frame_saved_pc PARAMS ((struct frame_info *));
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#define FRAME_SAVED_PC(FI) (mn10200_frame_saved_pc (FI))
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/* Extract from an array REGBUF containing the (raw) register state
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a function return value of type TYPE, and copy that, in virtual format,
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into VALBUF. */
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#define EXTRACT_RETURN_VALUE(TYPE, REGBUF, VALBUF) \
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memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), TYPE_LENGTH (TYPE))
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#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
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extract_address (REGBUF + REGISTER_BYTE (0), \
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REGISTER_RAW_SIZE (0))
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#define STORE_RETURN_VALUE(TYPE, VALBUF) \
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write_register_bytes(REGISTER_BYTE (0), VALBUF, TYPE_LENGTH (TYPE));
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extern CORE_ADDR mn10200_skip_prologue PARAMS ((CORE_ADDR pc));
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#define SKIP_PROLOGUE(pc) pc = mn10200_skip_prologue (pc)
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#define FRAME_ARGS_SKIP 0
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#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
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#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
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#define FRAME_NUM_ARGS(val, fi) ((val) = -1)
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extern void mn10200_pop_frame PARAMS ((struct frame_info *frame));
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#define POP_FRAME mn10200_pop_frame (get_current_frame ())
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#define USE_GENERIC_DUMMY_FRAMES
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#define CALL_DUMMY {0}
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#undef CALL_DUMMY /* for now, no function calls */
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#define CALL_DUMMY_START_OFFSET (0)
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#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
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#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
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#define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
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#define CALL_DUMMY_ADDRESS() entry_point_address ()
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extern CORE_ADDR mn10200_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR));
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#define PUSH_RETURN_ADDRESS(PC, SP) mn10200_push_return_address (PC, SP)
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#define PUSH_DUMMY_FRAME generic_push_dummy_frame ()
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extern CORE_ADDR
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mn10200_push_arguments PARAMS ((int nargs, struct value **args, CORE_ADDR sp,
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unsigned char struct_return,
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CORE_ADDR struct_addr));
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#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
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(SP) = mn10200_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)
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#define STORE_STRUCT_RETURN(STRUCT_ADDR, SP)
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#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP)
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#define USE_STRUCT_CONVENTION(GCC_P, TYPE) \
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(TYPE_NFIELDS (TYPE) > 1 || TYPE_LENGTH (TYPE) > 4)
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/* override the default get_saved_register function with
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one that takes account of generic CALL_DUMMY frames */
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#define GET_SAVED_REGISTER
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/* Define this for Wingdb */
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#define TARGET_MN10200
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378
gdb/mn10200-tdep.c
Normal file
378
gdb/mn10200-tdep.c
Normal file
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@ -0,0 +1,378 @@
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/* Target-dependent code for the Matsushita MN10200 for GDB, the GNU debugger.
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Copyright 1997 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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||||||
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||||||
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You should have received a copy of the GNU General Public License
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||||||
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "frame.h"
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#include "inferior.h"
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#include "obstack.h"
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#include "target.h"
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#include "value.h"
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#include "bfd.h"
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#include "gdb_string.h"
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#include "gdbcore.h"
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#include "symfile.h"
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/* Info gleaned from scanning a function's prologue. */
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struct pifsr /* Info about one saved reg */
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{
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int framereg; /* Frame reg (SP or FP) */
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int offset; /* Offset from framereg */
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int reg; /* Saved register number */
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};
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struct prologue_info
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{
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int framereg;
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int frameoffset;
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int start_function;
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struct pifsr *pifsrs;
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};
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/* Function: frame_chain
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Figure out and return the caller's frame pointer given current
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frame_info struct.
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We start out knowing the current pc, current sp, current fp.
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We want to determine the caller's fp and caller's pc. To do this
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correctly, we have to be able to handle the case where we are in the
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middle of the prologue which involves scanning the prologue.
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We don't handle dummy frames yet but we would probably just return the
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stack pointer that was in use at the time the function call was made?
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*/
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CORE_ADDR
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mn10200_frame_chain (fi)
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struct frame_info *fi;
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{
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struct prologue_info pi;
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CORE_ADDR callers_pc, callers_fp, curr_sp;
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CORE_ADDR past_prologue_addr;
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int past_prologue = 1; /* default to being past prologue */
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int n_movm_args = 4;
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struct pifsr *pifsr, *pifsr_tmp;
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/* current pc is fi->pc */
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/* current fp is fi->frame */
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/* current sp is: */
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curr_sp = read_register (SP_REGNUM);
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/*
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printf("curr pc = 0x%x ; curr fp = 0x%x ; curr sp = 0x%x\n",
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fi->pc, fi->frame, curr_sp);
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*/
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/* first inst after prologue is: */
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past_prologue_addr = mn10200_skip_prologue (fi->pc);
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/* Are we in the prologue? */
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/* Yes if mn10200_skip_prologue returns an address after the
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current pc in which case we have to scan prologue */
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if (fi->pc < mn10200_skip_prologue (fi->pc))
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past_prologue = 0;
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/* scan prologue if we're not past it */
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if (!past_prologue)
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{
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/* printf("scanning prologue\n"); */
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/* FIXME -- fill out this case later */
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return 0x666; /* bogus value */
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}
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if (past_prologue) /* if we don't need to scan the prologue */
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{
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/* printf("we're past the prologue\n"); */
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callers_pc = fi->frame - REGISTER_SIZE;
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callers_fp = fi->frame - ((n_movm_args + 1) * REGISTER_SIZE);
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/*
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printf("callers_pc = 0x%x ; callers_fp = 0x%x\n",
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callers_pc, callers_fp);
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printf("*callers_pc = 0x%x ; *callers_fp = 0x%x\n",
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read_memory_integer(callers_pc, REGISTER_SIZE),
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read_memory_integer(callers_fp, REGISTER_SIZE));
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*/
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return read_memory_integer(callers_fp, REGISTER_SIZE);
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|
}
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/* we don't get here */
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|
}
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/* Function: find_callers_reg
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Find REGNUM on the stack. Otherwise, it's in an active register.
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|
One thing we might want to do here is to check REGNUM against the
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|
clobber mask, and somehow flag it as invalid if it isn't saved on
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the stack somewhere. This would provide a graceful failure mode
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|
when trying to get the value of caller-saves registers for an inner
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frame. */
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CORE_ADDR
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mn10200_find_callers_reg (fi, regnum)
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struct frame_info *fi;
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|
int regnum;
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|
{
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||||||
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/* printf("mn10200_find_callers_reg\n"); */
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|
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for (; fi; fi = fi->next)
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if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
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return generic_read_register_dummy (fi->pc, fi->frame, regnum);
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|
else if (fi->fsr.regs[regnum] != 0)
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|
return read_memory_unsigned_integer (fi->fsr.regs[regnum],
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|
REGISTER_RAW_SIZE(regnum));
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|
|
||||||
|
return read_register (regnum);
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||||||
|
}
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/* Function: skip_prologue
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|
Return the address of the first inst past the prologue of the function.
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|
*/
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CORE_ADDR
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mn10200_skip_prologue (pc)
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|
CORE_ADDR pc;
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|
{
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CORE_ADDR func_addr, func_end;
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/* printf("mn10200_skip_prologue\n"); */
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/* See what the symbol table says */
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if (find_pc_partial_function (pc, NULL, &func_addr, &func_end))
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{
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struct symtab_and_line sal;
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sal = find_pc_line (func_addr, 0);
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||||||
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if (sal.line != 0 && sal.end < func_end)
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return sal.end;
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else
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/* Either there's no line info, or the line after the prologue is after
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|
the end of the function. In this case, there probably isn't a
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prologue. */
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return pc;
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||||||
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}
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||||||
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/* We can't find the start of this function, so there's nothing we can do. */
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return pc;
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||||||
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}
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||||||
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/* Function: pop_frame
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|
This routine gets called when either the user uses the `return'
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command, or the call dummy breakpoint gets hit. */
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void
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mn10200_pop_frame (frame)
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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;
|
||||||
|
}
|
||||||
|
|
||||||
Loading…
Reference in a new issue