--- /dev/null
+/* Copyright (C) 1990 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#define TARGET_BYTE_ORDER BIG_ENDIAN
+
+/* Floating point is IEEE compliant */
+#define IEEE_FLOAT
+
+/* 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*/
+
+/* Debugger information will be in mips' format */
+
+#define READ_MIPS_FORMAT
+
+/* File format is coff, but with additions */
+
+#define COFF_FORMAT
+
+/* Offset from address of function to start of its code.
+ Zero on most machines. */
+
+#define FUNCTION_START_OFFSET 0
+
+/* Advance PC across any function entry prologue instructions
+ to reach some "real" code. */
+
+#define SKIP_PROLOGUE(pc) pc = mips_skip_prologue(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(RA_REGNUM)
+
+/* Are we currently handling a signal */
+
+#define IN_SIGTRAMP(pc, name) in_sigtramp(pc, name)
+
+/* Address of end of stack space. */
+
+#define STACK_END_ADDR (0x7ffff000)
+
+/* Stack grows downward. */
+
+#define INNER_THAN <
+
+#define BREAKPOINT {0, 0x5, 0, 0xd}
+
+/* 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
+
+/* Nonzero if instruction at PC is a return instruction. "j ra" on mips. */
+
+#define ABOUT_TO_RETURN(pc) (read_memory_integer (pc, 4) == 0x3e00008)
+
+/* Return 1 if P points to an invalid floating point value. */
+
+#define INVALID_FLOAT(p,l) isa_NAN(p,l)
+
+/* Say how long (all) registers are. */
+
+#define REGISTER_TYPE long
+
+/* Number of machine registers */
+
+#define NUM_REGS 71
+
+/* Initializer for an array of names of registers.
+ There should be NUM_REGS strings in this initializer. */
+
+#define REGISTER_NAMES \
+ { "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3", \
+ "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", \
+ "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", \
+ "t8", "t9", "k0", "k1", "gp", "sp", "fp", "ra", \
+ "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
+ "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
+ "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",\
+ "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",\
+ "pc", "cause", "bad", "hi", "lo", "fsr", "fir" \
+ }
+
+/* Register numbers of various important registers.
+ Note that some of these values are "real" register numbers,
+ and correspond to the general registers of the machine,
+ and some are "phony" register numbers which are too large
+ to be actual register numbers as far as the user is concerned
+ but do serve to get the desired values when passed to read_register. */
+
+#define SP_REGNUM 29 /* Contains address of top of stack */
+#define FP_REGNUM 30 /* Pseudo register that contains true address of executing stack frame */
+#define RA_REGNUM 31 /* Contains return address value */
+#define FP0_REGNUM 32 /* Floating point register 0 (single float) */
+#define PC_REGNUM 64 /* Contains program counter */
+#define PS_REGNUM 65 /* Contains processor status */
+#define HI_REGNUM 67 /* Multiple/divide temp */
+#define LO_REGNUM 68 /* ... */
+#define FCRCS_REGNUM 69 /* FP control/status */
+#define FCRIR_REGNUM 70 /* FP implementation/revision */
+
+/* Define DO_REGISTERS_INFO() to do machine-specific formatting
+ of register dumps. */
+
+#define DO_REGISTERS_INFO(_regnum, fp) mips_do_registers_info(_regnum, fp)
+
+#define U_REGS_OFFSET 0
+
+#define REGISTER_U_ADDR(addr, blockend, regno) \
+ if (regno < PC_REGNUM) \
+ addr = regno; \
+ else \
+ addr = regno + NSIG_HNDLRS; /* Skip over signal handlers */
+
+/* Total amount of space needed to store our copies of the machine's
+ register state, the array `registers'. */
+#define REGISTER_BYTES (NUM_REGS*4)
+
+/* Index within `registers' of the first byte of the space for
+ register N. */
+
+#define REGISTER_BYTE(N) ((N) * 4)
+
+/* Number of bytes of storage in the actual machine representation
+ for register N. On mips, all regs are 4 bytes. */
+
+#define REGISTER_RAW_SIZE(N) 4
+
+/* Number of bytes of storage in the program's representation
+ for register N. On mips, all regs are 4 bytes. */
+
+#define REGISTER_VIRTUAL_SIZE(N) 4
+
+/* Largest value REGISTER_RAW_SIZE can have. */
+
+#define MAX_REGISTER_RAW_SIZE 4
+
+/* Largest value REGISTER_VIRTUAL_SIZE can have. */
+
+#define MAX_REGISTER_VIRTUAL_SIZE 4
+
+/* Nonzero if register N requires conversion
+ from raw format to virtual format. */
+
+#define REGISTER_CONVERTIBLE(N) 0
+
+/* Convert data from raw format for register REGNUM
+ to virtual format for register REGNUM. */
+
+#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
+ bcopy ((FROM), (TO), 4);
+
+/* Convert data from virtual format for register REGNUM
+ to raw format for register REGNUM. */
+
+#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \
+ bcopy ((FROM), (TO), 4);
+
+/* Return the GDB type object for the "standard" data type
+ of data in register N. */
+
+#define REGISTER_VIRTUAL_TYPE(N) builtin_type_int
+/* Store the address of the place in which to copy the structure the
+ subroutine will return. This is called from call_function. */
+
+#define STORE_STRUCT_RETURN(addr, sp) \
+ { sp = push_word(sp, 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. XXX floats */
+
+#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
+ bcopy (REGBUF+REGISTER_BYTE (TYPE_CODE (TYPE) == TYPE_CODE_FLT ? FP0_REGNUM : 2), VALBUF, 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 (TYPE_CODE (TYPE) == TYPE_CODE_FLT ? FP0_REGNUM : 2), VALBUF, TYPE_LENGTH (TYPE))
+
+/* Extract from an array REGBUF containing the (raw) register state
+ the address in which a function should return its structure value,
+ as a CORE_ADDR (or an expression that can be used as one). */
+
+#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(int *)(REGBUF+16))
+
+/* Structures are returned by ref in extra arg0 */
+#define USE_STRUCT_CONVENTION(gcc_p, type) 1
+
+\f
+/* 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.
+
+ FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address
+ and produces the nominal address of the caller frame.
+
+ However, if FRAME_CHAIN_VALID returns zero,
+ it means the given frame is the outermost one and has no caller.
+ In that case, FRAME_CHAIN_COMBINE is not used. */
+
+#define FRAME_CHAIN(thisframe) (FRAME_ADDR)mips_frame_chain(thisframe)
+
+#define FRAME_CHAIN_VALID(chain, thisframe) \
+ (chain != 0 && (outside_startup_file (FRAME_SAVED_PC (thisframe))))
+
+#define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
+
+/* Define other aspects of the stack frame. */
+
+
+/* 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. */
+/* We handle this differently for mips, and maybe we should not */
+
+#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) {(FRAMELESS) = 0;}
+
+/* Saved Pc. */
+
+#define FRAME_SAVED_PC(FRAME) (mips_frame_saved_pc(FRAME))
+
+#define FRAME_ARGS_ADDRESS(fi) (fi)->frame
+
+#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame
+
+/* Return number of args passed to a frame.
+ Can return -1, meaning no way to tell. */
+
+#define FRAME_NUM_ARGS(num, fi) (num = mips_frame_num_args(fi))
+
+/* Return number of bytes at start of arglist that are not really args. */
+
+#define FRAME_ARGS_SKIP 0
+
+/* 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) ( \
+ (frame_saved_regs) = *(frame_info)->saved_regs, \
+ (frame_saved_regs).regs[SP_REGNUM] = (frame_info)->frame)
+
+\f
+/* Things needed for making the inferior call functions. */
+
+/* Stack has strict alignment. However, use PUSH_ARGUMENTS
+ to take care of it. */
+/*#define STACK_ALIGN(addr) (((addr)+3)&~3)*/
+
+#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
+ sp = mips_push_arguments(nargs, args, sp, struct_return, struct_addr)
+
+/* Push an empty stack frame, to record the current PC, etc. */
+
+#define PUSH_DUMMY_FRAME mips_push_dummy_frame()
+
+/* Discard from the stack the innermost frame, restoring all registers. */
+
+#define POP_FRAME mips_pop_frame()
+
+#define MK_OP(op,rs,rt,offset) (((op)<<26)|((rs)<<21)|((rt)<<16)|(offset))
+#define CALL_DUMMY_SIZE (16*4)
+#define Dest_Reg 2
+#define CALL_DUMMY {\
+ MK_OP(0,RA_REGNUM,0,8), /* jr $ra # Fake ABOUT_TO_RETURN ...*/\
+ 0, /* nop # ... to stop raw backtrace*/\
+ 0x27bd0000, /* addu sp,?0 # Pseudo prologue */\
+/* Start here: */\
+ MK_OP(061,SP_REGNUM,12,0), /* lwc1 $f12,0(sp) # Reload first 4 args*/\
+ MK_OP(061,SP_REGNUM,13,4), /* lwc1 $f13,4(sp) */\
+ MK_OP(061,SP_REGNUM,14,8), /* lwc1 $f14,8(sp) */\
+ MK_OP(061,SP_REGNUM,15,12), /* lwc1 $f15,12(sp) */\
+ MK_OP(043,SP_REGNUM,4,0), /* lw $r4,0(sp) # Re-load FP regs*/\
+ MK_OP(043,SP_REGNUM,5,4), /* lw $r5,4(sp) */\
+ MK_OP(043,SP_REGNUM,6,8), /* lw $r6,8(sp) */\
+ MK_OP(043,SP_REGNUM,7,12), /* lw $r7,12(sp) */\
+ (017<<26)| (Dest_Reg << 16), /* lui $r31,<target upper 16 bits>*/\
+ MK_OP(13,Dest_Reg,Dest_Reg,0), /* ori $r31,$r31,<lower 16 bits>*/ \
+ (Dest_Reg<<21) | (31<<11) | 9, /* jalr $r31 */\
+ MK_OP(043,SP_REGNUM,7,12), /* lw $r7,12(sp) */\
+ 0x5000d, /* bpt */\
+}
+
+#define CALL_DUMMY_START_OFFSET 12
+
+/* Insert the specified number of args and function address
+ into a call sequence of the above form stored at DUMMYNAME. */
+
+#define FIX_CALL_DUMMY(dummyname, start_sp, fun, nargs, args, rettype, gcc_p)\
+ (((int*)dummyname)[11] |= (((unsigned long)(fun)) >> 16), \
+ ((int*)dummyname)[12] |= (unsigned short)(fun))
+
+/* Specific information about a procedure.
+ This overlays the MIPS's PDR records,
+ mipsread.c (ab)uses this to save memory */
+
+typedef struct mips_extra_func_info {
+ unsigned long adr; /* memory address of start of procedure */
+ long isym; /* pointer to procedure symbol */
+ long pad2; /* iline: start of line number entries*/
+ long regmask; /* save register mask */
+ long regoffset; /* save register offset */
+ long numargs; /* number of args to procedure (was iopt) */
+ long fregmask; /* save floating point register mask */
+ long fregoffset; /* save floating point register offset */
+ long framesize; /* frameoffset: frame size */
+ short framereg; /* frame pointer register */
+ short pcreg; /* offset or reg of return pc */
+ long lnLow; /* lowest line in the procedure */
+ long lnHigh; /* highest line in the procedure */
+ long pad3; /* cbLineOffset: byte offset for this procedure from the fd base */
+} *mips_extra_func_info_t;
+
+#define EXTRA_FRAME_INFO \
+ char *proc_desc; /* actually, a mips_extra_func_info_t */\
+ int num_args;\
+ struct frame_saved_regs *saved_regs;
+
+#define INIT_EXTRA_FRAME_INFO(fci) init_extra_frame_info(fci)
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