--- /dev/null
+/* Parameters for execution on a TI TMS320C80 (MVP) processor.
+ 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. */
+
+#ifndef TM_TIC80_H
+#define TM_TIC80_H
+
+#ifdef __STDC__ /* Forward declare structs used in prototypes */
+struct frame_info;
+struct type;
+struct value;
+struct symbol;
+struct frame_saved_regs;
+#endif
+
+#define TARGET_BYTE_ORDER LITTLE_ENDIAN
+
+/* 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 NUM_REGS 38
+
+#define REGISTER_NAMES \
+{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
+ "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
+ "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \
+ "pc", "npc", \
+ "a0", "a1", "a2", "a3", \
+}
+
+/* Various dedicated register numbers
+ FIXME: Shadow updates in sim/tic80/sim-calls.c */
+
+#define SP_REGNUM 1 /* Contains address of top of stack */
+#define ARG0_REGNUM 2 /* Contains argument 1 (r3 has high word) */
+#define RET_REGNUM 2 /* Contains function return value */
+#define ARGLAST_REGNUM 12 /* Contains argument 6 (r13 has high word) */
+#define FP_REGNUM 30 /* Contains address of executing stack frame */
+#define LR_REGNUM 31 /* Contains address of caller (link register) */
+#define PC_REGNUM 32 /* Contains program counter (FIXME?) */
+#define NPC_REGNUM 33 /* Contains the next program counter (FIXME?) */
+#define A0_REGNUM 34 /* Accumulator register 0 */
+#define A3_REGNUM 37 /* Accumulator register 1 */
+
+#define R0_REGNUM 0 /* General Purpose Register 0 - for sim */
+#define Rn_REGNUM 31 /* Last General Purpose Register - for sim */
+#define An_REGNUM A3_REGNUM /* Last Accumulator register - for sim */
+
+/* Total amount of space needed to store our copies of the machine's
+ register state, the array `registers'. */
+
+#define REGISTER_BYTES (((NUM_REGS - 4) * 4) + (4 * 8))
+
+/* Index within `registers' of the first byte of the space for
+ register N. */
+
+#define REGISTER_BYTE(N) \
+ (((N) >= A0_REGNUM) ? (((N) - A0_REGNUM) * 8 + A0_REGNUM * 4) : ((N) * 4))
+
+/* Most registers are 4 bytes */
+
+#define REGISTER_SIZE 4
+
+/* Some registers are 8 bytes. */
+
+#define REGISTER_RAW_SIZE(N) \
+ (((N) >= A0_REGNUM) ? 8 : 4)
+
+/* Largest value REGISTER_RAW_SIZE can have. */
+
+#define MAX_REGISTER_RAW_SIZE (8)
+
+/* All regs are 4 bytes. */
+
+#define REGISTER_VIRTUAL_SIZE(N) (REGISTER_RAW_SIZE(N))
+
+/* Largest value REGISTER_VIRTUAL_SIZE can have. */
+
+#define MAX_REGISTER_VIRTUAL_SIZE (MAX_REGISTER_RAW_SIZE)
+
+/* Return the GDB type object for the "standard" data type
+ of data in register N. */
+
+#define REGISTER_VIRTUAL_TYPE(N) /* FIXME? */ \
+ (((N) >= A0_REGNUM) ? builtin_type_float : builtin_type_int)
+
+/* Offset from address of function to start of its code.
+ Zero on most machines. */
+
+#define FUNCTION_START_OFFSET 0
+
+/* Stack grows downward. */
+
+#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
+
+/* Sequence of bytes for breakpoint instruction.
+ This is padded out to the size of a machine word. */
+
+#define BREAKPOINT {0x49, 0x80, 0x00, 0x00} /* FIXME! */
+
+/* Amount PC must be decremented by after a breakpoint.
+ This is often the number of bytes in BREAKPOINT
+ but not always. */
+
+#define DECR_PC_AFTER_BREAK 0 /* FIXME! */
+
+/* Discard from the stack the innermost frame, restoring all registers. */
+
+#define POP_FRAME tic80_pop_frame(get_current_frame ())
+extern struct frame_info *tic80_pop_frame PARAMS ((struct frame_info *frame));
+
+/* Return number of bytes at start of arglist that are not really args. */
+
+#define FRAME_ARGS_SKIP 0
+
+/* 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 */
+
+#define FRAME_NUM_ARGS(val,fi) (val = -1)
+
+#define FRAME_ARGS_SKIP 0
+#define FRAME_ARGS_ADDRESS(fi) (fi)->frame
+#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame
+
+/* Define other aspects of the stack frame.
+ We keep the offsets of all saved registers, 'cause we need 'em a lot!
+ We also keep the current size of the stack frame, and the offset of
+ the frame pointer from the stack pointer (for frameless functions, and
+ when we're still in the prologue of a function with a frame) */
+
+#define EXTRA_FRAME_INFO \
+ struct frame_saved_regs fsr; \
+ int framesize; \
+ int frameoffset; \
+ int framereg;
+
+extern void tic80_init_extra_frame_info PARAMS ((struct frame_info *fi));
+#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) tic80_init_extra_frame_info (fi)
+#define INIT_FRAME_PC /* Not necessary */
+
+/* Put here the code to store, into a struct frame_saved_regs,
+ the addresses of the saved registers of frame described by FRAME_INFO.
+ This includes special registers such as pc and fp saved in special
+ ways in the stack frame. sp is even more special:
+ the address we return for it IS the sp for the next frame. */
+
+#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
+ tic80_frame_find_saved_regs(frame_info, &(frame_saved_regs))
+extern void tic80_frame_find_saved_regs PARAMS ((struct frame_info *, struct frame_saved_regs *));
+
+/* Advance PC across any function entry prologue instructions
+ to reach some "real" code. */
+
+#define SKIP_PROLOGUE(pc) { (pc) = tic80_skip_prologue (pc); }
+extern CORE_ADDR tic80_skip_prologue PARAMS ((CORE_ADDR pc));
+
+/* 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) read_register (LR_REGNUM)
+
+/* 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. */
+
+#define FRAME_CHAIN(thisframe) (CORE_ADDR) tic80_frame_chain (thisframe)
+extern CORE_ADDR tic80_frame_chain PARAMS ((struct frame_info *));
+
+#define FRAME_SAVED_PC(FRAME) tic80_frame_saved_pc (FRAME)
+extern CORE_ADDR tic80_frame_saved_pc PARAMS ((struct frame_info *));
+
+/* Store the address of the place in which to copy the structure the
+ subroutine will return. This is called from call_function.
+
+ We store structs through a pointer passed in R2 */
+
+#define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) \
+ write_register (ARG0_REGNUM, STRUCT_ADDR)
+
+/* 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), \
+ (char *)(REGBUF) + REGISTER_BYTE (RET_REGNUM) + \
+ ((TYPE_LENGTH (TYPE) > 4 ? 8 : 4) - TYPE_LENGTH (TYPE)), \
+ TYPE_LENGTH (TYPE))
+
+/* Write into appropriate registers a function return value
+ of type TYPE, given in virtual format. */
+
+#define STORE_RETURN_VALUE(TYPE,VALBUF) \
+ write_register_bytes(REGISTER_BYTE (RET_REGNUM) + \
+ ((TYPE_LENGTH (TYPE) > 4 ? 8:4) - TYPE_LENGTH (TYPE)),\
+ (VALBUF), TYPE_LENGTH (TYPE));
+
+
+
+/* PUSH_ARGUMENTS */
+extern CORE_ADDR tic80_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) = tic80_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)
+
+/* PUSH_RETURN_ADDRESS */
+extern CORE_ADDR tic80_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR));
+#define PUSH_RETURN_ADDRESS(PC, SP) tic80_push_return_address (PC, SP)
+
+/* override the standard get_saved_register function with
+ one that takes account of generic CALL_DUMMY frames */
+#define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \
+ generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
+
+#define USE_GENERIC_DUMMY_FRAMES 1
+#define CALL_DUMMY {0}
+#define CALL_DUMMY_LENGTH (0)
+#define CALL_DUMMY_START_OFFSET (0)
+#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
+#define FIX_CALL_DUMMY(DUMMY1, STARTADDR, FUNADDR, NARGS, ARGS, TYPE, GCCP)
+#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
+#define CALL_DUMMY_ADDRESS() entry_point_address ()
+
+/* generic dummy frame stuff */
+
+#define PUSH_DUMMY_FRAME generic_push_dummy_frame ()
+#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP)
+
+#endif /* TM_TIC80_H */
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