75a1d67abb
* m68k/tm-delta68.h (EXTRACT_RETURN_VALUE): Type argument for
`REGISTER_CONVERT_TO_VIRTUAL is `TYPE', not
`REGISTER_VIRTUAL_TYPE (FP0_REGNUM)';
(STORE_RETURN_VALUE): Ditto, and offset for `write_register_bytes'
is `REGISTER_BYTE (FP0_REGNUM)', not `FP0_REGNUM'.
(FRAME_NUM_ARGS): New macro.
* m68k/tm-news.h (EXTRACT_RETURN_VALUE, STORE_RETURN_VALUE): Ditto.
* delta68-nat.c (clear_insn_cache): New function, forgotten in previous
patch.
103 lines
3.9 KiB
C
103 lines
3.9 KiB
C
/* Target definitions for delta68.
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Copyright 1993, 1994, 1998 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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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 BPT_VECTOR if it is different than the default.
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This is the vector number used by traps to indicate a breakpoint. */
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#define BPT_VECTOR 0x1
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#define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled%"
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#define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled%"
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/* Amount PC must be decremented by after a breakpoint.
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On the Delta, the kernel decrements it for us. */
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#define DECR_PC_AFTER_BREAK 0
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/* Not sure what happens if we try to store this register, but
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phdm@info.ucl.ac.be says we need this define. */
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#define CANNOT_STORE_REGISTER(regno) (regno == FPI_REGNUM)
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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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/* When it returns a float/double value, use fp0 in sysV68. */
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/* When it returns a pointer value, use a0 in sysV68. */
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#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
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if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
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REGISTER_CONVERT_TO_VIRTUAL (FP0_REGNUM, TYPE, \
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®BUF[REGISTER_BYTE (FP0_REGNUM)], \
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VALBUF); \
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else \
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memcpy ((VALBUF), \
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(char *) ((REGBUF) + \
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(TYPE_CODE(TYPE) == TYPE_CODE_PTR ? 8 * 4 : \
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(TYPE_LENGTH(TYPE) >= 4 ? 0 : 4 - TYPE_LENGTH(TYPE)))), \
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TYPE_LENGTH(TYPE))
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/* Write into appropriate registers a function return value
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of type TYPE, given in virtual format. */
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/* When it returns a float/double value, use fp0 in sysV68. */
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/* When it returns a pointer value, use a0 in sysV68. */
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#define STORE_RETURN_VALUE(TYPE,VALBUF) \
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if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
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{ \
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char raw_buf[REGISTER_RAW_SIZE (FP0_REGNUM)]; \
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REGISTER_CONVERT_TO_RAW (TYPE, FP0_REGNUM, VALBUF, raw_buf); \
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write_register_bytes (REGISTER_BYTE (FP0_REGNUM), \
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raw_buf, REGISTER_RAW_SIZE (FP0_REGNUM)); \
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} \
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else \
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write_register_bytes ((TYPE_CODE(TYPE) == TYPE_CODE_PTR ? 8 * 4 : 0), \
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VALBUF, TYPE_LENGTH (TYPE))
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/* Return number of args passed to a frame.
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Can return -1, meaning no way to tell. */
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#define FRAME_NUM_ARGS(val, fi) \
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{ register CORE_ADDR pc = FRAME_SAVED_PC (fi); \
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register int insn = 0177777 & read_memory_integer (pc, 2); \
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val = 0; \
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if (insn == 0047757 || insn == 0157374) /* lea W(sp),sp or addaw #W,sp */ \
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val = read_memory_integer (pc + 2, 2); \
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else if ((insn & 0170777) == 0050217 /* addql #N, sp */ \
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|| (insn & 0170777) == 0050117) /* addqw */ \
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{ val = (insn >> 9) & 7; if (val == 0) val = 8; } \
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else if (insn == 0157774) /* addal #WW, sp */ \
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val = read_memory_integer (pc + 2, 4); \
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val >>= 2; }
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/* On M68040 versions of sysV68 R3V7.1, ptrace(PT_WRITE_I) does not clear
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the processor's instruction cache as it should. */
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#define CLEAR_INSN_CACHE() clear_insn_cache()
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#include "m68k/tm-m68k.h"
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/* Extract from an array REGBUF containing the (raw) register state
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the address in which a function should return its structure value,
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as a CORE_ADDR (or an expression that can be used as one). */
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#undef EXTRACT_STRUCT_VALUE_ADDRESS
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#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF)\
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(*(CORE_ADDR *)((char*)(REGBUF) + 8 * 4))
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