560 lines
21 KiB
C
560 lines
21 KiB
C
/* Definitions to make GDB run on a mips box under 4.3bsd.
|
||
Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995
|
||
Free Software Foundation, Inc.
|
||
Contributed by Per Bothner (bothner@cs.wisc.edu) at U.Wisconsin
|
||
and by Alessandro Forin (af@cs.cmu.edu) at CMU..
|
||
|
||
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_MIPS_H
|
||
#define TM_MIPS_H 1
|
||
|
||
#ifdef __STDC__
|
||
struct frame_info;
|
||
struct symbol;
|
||
struct type;
|
||
struct value;
|
||
#endif
|
||
|
||
#include <bfd.h>
|
||
#include "coff/sym.h" /* Needed for PDR below. */
|
||
#include "coff/symconst.h"
|
||
|
||
#if !defined (TARGET_BYTE_ORDER_DEFAULT)
|
||
#define TARGET_BYTE_ORDER_DEFAULT LITTLE_ENDIAN
|
||
#endif
|
||
|
||
#if !defined (GDB_TARGET_IS_MIPS64)
|
||
#define GDB_TARGET_IS_MIPS64 0
|
||
#endif
|
||
|
||
#if !defined (MIPS_EABI)
|
||
#define MIPS_EABI 0
|
||
#endif
|
||
|
||
#if !defined (TARGET_MONITOR_PROMPT)
|
||
#define TARGET_MONITOR_PROMPT "<IDT>"
|
||
#endif
|
||
|
||
/* PC should be masked to remove possible MIPS16 flag */
|
||
#if !defined (GDB_TARGET_MASK_DISAS_PC)
|
||
#define GDB_TARGET_MASK_DISAS_PC(addr) UNMAKE_MIPS16_ADDR(addr)
|
||
#endif
|
||
#if !defined (GDB_TARGET_UNMASK_DISAS_PC)
|
||
#define GDB_TARGET_UNMASK_DISAS_PC(addr) MAKE_MIPS16_ADDR(addr)
|
||
#endif
|
||
|
||
/* Floating point is IEEE compliant */
|
||
#define IEEE_FLOAT
|
||
|
||
/* The name of the usual type of MIPS processor that is in the target
|
||
system. */
|
||
|
||
#define DEFAULT_MIPS_TYPE "generic"
|
||
|
||
/* Remove useless bits from an instruction address. */
|
||
|
||
#define ADDR_BITS_REMOVE(addr) mips_addr_bits_remove(addr)
|
||
CORE_ADDR mips_addr_bits_remove PARAMS ((CORE_ADDR addr));
|
||
|
||
/* Remove useless bits from the stack pointer. */
|
||
|
||
#define TARGET_READ_SP() ADDR_BITS_REMOVE (read_register (SP_REGNUM))
|
||
|
||
/* 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, 0)
|
||
extern CORE_ADDR mips_skip_prologue PARAMS ((CORE_ADDR addr, int lenient));
|
||
|
||
/* Return non-zero if PC points to an instruction which will cause a step
|
||
to execute both the instruction at PC and an instruction at PC+4. */
|
||
extern int mips_step_skips_delay PARAMS ((CORE_ADDR));
|
||
#define STEP_SKIPS_DELAY_P (1)
|
||
#define STEP_SKIPS_DELAY(pc) (mips_step_skips_delay (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 */
|
||
|
||
extern int in_sigtramp PARAMS ((CORE_ADDR, char *));
|
||
#define IN_SIGTRAMP(pc, name) in_sigtramp(pc, name)
|
||
|
||
/* Stack grows downward. */
|
||
|
||
#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
|
||
|
||
#define BIG_ENDIAN 4321
|
||
|
||
/* BREAKPOINT_FROM_PC uses the program counter value to determine whether a
|
||
16- or 32-bit breakpoint should be used. It returns a pointer
|
||
to a string of bytes that encode a breakpoint instruction, stores
|
||
the length of the string to *lenptr, and adjusts the pc (if necessary) to
|
||
point to the actual memory location where the breakpoint should be
|
||
inserted. */
|
||
|
||
extern breakpoint_from_pc_fn mips_breakpoint_from_pc;
|
||
#define BREAKPOINT_FROM_PC(pcptr, lenptr) mips_breakpoint_from_pc(pcptr, lenptr)
|
||
|
||
/* 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
|
||
|
||
/* Say how long (ordinary) registers are. This is a piece of bogosity
|
||
used in push_word and a few other places; REGISTER_RAW_SIZE is the
|
||
real way to know how big a register is. */
|
||
|
||
#define REGISTER_SIZE 4
|
||
|
||
/* The size of a register. This is predefined in tm-mips64.h. We
|
||
can't use REGISTER_SIZE because that is used for various other
|
||
things. */
|
||
|
||
#ifndef MIPS_REGSIZE
|
||
#define MIPS_REGSIZE 4
|
||
#endif
|
||
|
||
/* The sizes of floating point registers. */
|
||
|
||
#define MIPS_FPU_SINGLE_REGSIZE 4
|
||
#define MIPS_FPU_DOUBLE_REGSIZE 8
|
||
|
||
/* Number of machine registers */
|
||
|
||
#ifndef NUM_REGS
|
||
#define NUM_REGS 90
|
||
#endif
|
||
|
||
/* Initializer for an array of names of registers.
|
||
There should be NUM_REGS strings in this initializer. */
|
||
|
||
#ifndef REGISTER_NAMES
|
||
#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", "s8", "ra", \
|
||
"sr", "lo", "hi", "bad", "cause","pc", \
|
||
"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",\
|
||
"fsr", "fir", "fp", "", \
|
||
"", "", "", "", "", "", "", "", \
|
||
"", "", "", "", "", "", "", "", \
|
||
}
|
||
#endif
|
||
|
||
/* 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 ZERO_REGNUM 0 /* read-only register, always 0 */
|
||
#define V0_REGNUM 2 /* Function integer return value */
|
||
#define A0_REGNUM 4 /* Loc of first arg during a subr call */
|
||
#if MIPS_EABI
|
||
# define MIPS_LAST_ARG_REGNUM 11 /* EABI uses R4 through R11 for args */
|
||
# define MIPS_NUM_ARG_REGS 8
|
||
#else
|
||
# define MIPS_LAST_ARG_REGNUM 7 /* old ABI uses R4 through R7 for args */
|
||
# define MIPS_NUM_ARG_REGS 4
|
||
#endif
|
||
#define T9_REGNUM 25 /* Contains address of callee in PIC */
|
||
#define SP_REGNUM 29 /* Contains address of top of stack */
|
||
#define RA_REGNUM 31 /* Contains return address value */
|
||
#define PS_REGNUM 32 /* Contains processor status */
|
||
#define HI_REGNUM 34 /* Multiple/divide temp */
|
||
#define LO_REGNUM 33 /* ... */
|
||
#define BADVADDR_REGNUM 35 /* bad vaddr for addressing exception */
|
||
#define CAUSE_REGNUM 36 /* describes last exception */
|
||
#define PC_REGNUM 37 /* Contains program counter */
|
||
#define FP0_REGNUM 38 /* Floating point register 0 (single float) */
|
||
#define FPA0_REGNUM (FP0_REGNUM+12) /* First float argument register */
|
||
#if MIPS_EABI /* EABI uses F12 through F19 for args */
|
||
# define MIPS_LAST_FP_ARG_REGNUM (FP0_REGNUM+19)
|
||
# define MIPS_NUM_FP_ARG_REGS 8
|
||
#else /* old ABI uses F12 through F15 for args */
|
||
# define MIPS_LAST_FP_ARG_REGNUM (FP0_REGNUM+15)
|
||
# define MIPS_NUM_FP_ARG_REGS 4
|
||
#endif
|
||
#define FCRCS_REGNUM 70 /* FP control/status */
|
||
#define FCRIR_REGNUM 71 /* FP implementation/revision */
|
||
#define FP_REGNUM 72 /* Pseudo register that contains true address of executing stack frame */
|
||
#define UNUSED_REGNUM 73 /* Never used, FIXME */
|
||
#define FIRST_EMBED_REGNUM 74 /* First CP0 register for embedded use */
|
||
#define PRID_REGNUM 89 /* Processor ID */
|
||
#define LAST_EMBED_REGNUM 89 /* Last one */
|
||
|
||
/* Define DO_REGISTERS_INFO() to do machine-specific formatting
|
||
of register dumps. */
|
||
|
||
#define DO_REGISTERS_INFO(_regnum, fp) mips_do_registers_info(_regnum, fp)
|
||
extern void mips_do_registers_info PARAMS ((int, int));
|
||
|
||
/* Total amount of space needed to store our copies of the machine's
|
||
register state, the array `registers'. */
|
||
|
||
#define REGISTER_BYTES (NUM_REGS*MIPS_REGSIZE)
|
||
|
||
/* Index within `registers' of the first byte of the space for
|
||
register N. */
|
||
|
||
#define REGISTER_BYTE(N) ((N) * MIPS_REGSIZE)
|
||
|
||
/* Number of bytes of storage in the actual machine representation
|
||
for register N. */
|
||
|
||
#define REGISTER_RAW_SIZE(N) REGISTER_VIRTUAL_SIZE(N)
|
||
|
||
/* Number of bytes of storage in the program's representation
|
||
for register N. */
|
||
|
||
#define REGISTER_VIRTUAL_SIZE(N) TYPE_LENGTH (REGISTER_VIRTUAL_TYPE (N))
|
||
|
||
/* Largest value REGISTER_RAW_SIZE can have. */
|
||
|
||
#define MAX_REGISTER_RAW_SIZE 8
|
||
|
||
/* Largest value REGISTER_VIRTUAL_SIZE can have. */
|
||
|
||
#define MAX_REGISTER_VIRTUAL_SIZE 8
|
||
|
||
/* Return the GDB type object for the "standard" data type of data in
|
||
register N. */
|
||
|
||
#ifndef REGISTER_VIRTUAL_TYPE
|
||
#define REGISTER_VIRTUAL_TYPE(N) \
|
||
(((N) >= FP0_REGNUM && (N) < FP0_REGNUM+32) ? builtin_type_float \
|
||
: ((N) == 32 /*SR*/) ? builtin_type_uint32 \
|
||
: ((N) >= 70 && (N) <= 89) ? builtin_type_uint32 \
|
||
: builtin_type_int)
|
||
#endif
|
||
|
||
/* All mips targets store doubles in a register pair with the least
|
||
significant register in the lower numbered register.
|
||
If the target is big endian, double register values need conversion
|
||
between memory and register formats. */
|
||
|
||
#define REGISTER_CONVERT_TO_TYPE(n, type, buffer) \
|
||
do {if (TARGET_BYTE_ORDER == BIG_ENDIAN \
|
||
&& REGISTER_RAW_SIZE (n) == 4 \
|
||
&& (n) >= FP0_REGNUM && (n) < FP0_REGNUM + 32 \
|
||
&& TYPE_CODE(type) == TYPE_CODE_FLT \
|
||
&& TYPE_LENGTH(type) == 8) { \
|
||
char __temp[4]; \
|
||
memcpy (__temp, ((char *)(buffer))+4, 4); \
|
||
memcpy (((char *)(buffer))+4, (buffer), 4); \
|
||
memcpy (((char *)(buffer)), __temp, 4); }} while (0)
|
||
|
||
#define REGISTER_CONVERT_FROM_TYPE(n, type, buffer) \
|
||
do {if (TARGET_BYTE_ORDER == BIG_ENDIAN \
|
||
&& REGISTER_RAW_SIZE (n) == 4 \
|
||
&& (n) >= FP0_REGNUM && (n) < FP0_REGNUM + 32 \
|
||
&& TYPE_CODE(type) == TYPE_CODE_FLT \
|
||
&& TYPE_LENGTH(type) == 8) { \
|
||
char __temp[4]; \
|
||
memcpy (__temp, ((char *)(buffer))+4, 4); \
|
||
memcpy (((char *)(buffer))+4, (buffer), 4); \
|
||
memcpy (((char *)(buffer)), __temp, 4); }} while (0)
|
||
|
||
/* Store the address of the place in which to copy the structure the
|
||
subroutine will return. Handled by mips_push_arguments. */
|
||
|
||
#define STORE_STRUCT_RETURN(addr, sp) /**/
|
||
|
||
/* 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) \
|
||
mips_extract_return_value(TYPE, REGBUF, VALBUF)
|
||
extern void
|
||
mips_extract_return_value PARAMS ((struct type *, char [], char *));
|
||
|
||
/* Write into appropriate registers a function return value
|
||
of type TYPE, given in virtual format. */
|
||
|
||
#define STORE_RETURN_VALUE(TYPE,VALBUF) \
|
||
mips_store_return_value(TYPE, VALBUF)
|
||
extern void mips_store_return_value PARAMS ((struct type *, char *));
|
||
|
||
/* 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). */
|
||
/* The address is passed in a0 upon entry to the function, but when
|
||
the function exits, the compiler has copied the value to v0. This
|
||
convention is specified by the System V ABI, so I think we can rely
|
||
on it. */
|
||
|
||
#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
|
||
(extract_address (REGBUF + REGISTER_BYTE (V0_REGNUM), \
|
||
REGISTER_RAW_SIZE (V0_REGNUM)))
|
||
|
||
extern use_struct_convention_fn mips_use_struct_convention;
|
||
#define USE_STRUCT_CONVENTION(gcc_p, type) mips_use_struct_convention (gcc_p, type)
|
||
|
||
/* 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) mips_frame_chain (thisframe)
|
||
extern CORE_ADDR mips_frame_chain PARAMS ((struct frame_info *));
|
||
|
||
/* 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))
|
||
extern CORE_ADDR mips_frame_saved_pc PARAMS ((struct frame_info *));
|
||
|
||
#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))
|
||
extern int mips_frame_num_args PARAMS ((struct frame_info *));
|
||
|
||
/* 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_INIT_SAVED_REGS(frame_info) \
|
||
do { \
|
||
if ((frame_info)->saved_regs == NULL) \
|
||
mips_find_saved_regs (frame_info); \
|
||
(frame_info)->saved_regs[SP_REGNUM] = (frame_info)->frame; \
|
||
} while (0)
|
||
extern void mips_find_saved_regs PARAMS ((struct frame_info *));
|
||
|
||
|
||
/* Things needed for making the inferior call functions. */
|
||
|
||
/* Stack must be aligned on 32-bit boundaries when synthesizing
|
||
function calls. We don't need STACK_ALIGN, PUSH_ARGUMENTS will
|
||
handle it. */
|
||
|
||
#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
|
||
sp = mips_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr))
|
||
extern CORE_ADDR
|
||
mips_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int, CORE_ADDR));
|
||
|
||
/* Push an empty stack frame, to record the current PC, etc. */
|
||
|
||
#define PUSH_DUMMY_FRAME mips_push_dummy_frame()
|
||
extern void mips_push_dummy_frame PARAMS ((void));
|
||
|
||
/* Discard from the stack the innermost frame, restoring all registers. */
|
||
|
||
#define POP_FRAME mips_pop_frame()
|
||
extern void mips_pop_frame PARAMS ((void));
|
||
|
||
#define CALL_DUMMY { 0 }
|
||
|
||
#define CALL_DUMMY_START_OFFSET (0)
|
||
|
||
#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
|
||
|
||
/* On Irix, $t9 ($25) contains the address of the callee (used for PIC).
|
||
It doesn't hurt to do this on other systems; $t9 will be ignored. */
|
||
#define FIX_CALL_DUMMY(dummyname, start_sp, fun, nargs, args, rettype, gcc_p) \
|
||
write_register(T9_REGNUM, fun)
|
||
|
||
#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
|
||
|
||
#define CALL_DUMMY_ADDRESS() (mips_call_dummy_address ())
|
||
extern CORE_ADDR mips_call_dummy_address PARAMS ((void));
|
||
|
||
/* There's a mess in stack frame creation. See comments in blockframe.c
|
||
near reference to INIT_FRAME_PC_FIRST. */
|
||
|
||
#define INIT_FRAME_PC(fromleaf, prev) /* nada */
|
||
|
||
#define INIT_FRAME_PC_FIRST(fromleaf, prev) \
|
||
mips_init_frame_pc_first(fromleaf, prev)
|
||
extern void mips_init_frame_pc_first PARAMS ((int, struct frame_info *));
|
||
|
||
/* Special symbol found in blocks associated with routines. We can hang
|
||
mips_extra_func_info_t's off of this. */
|
||
|
||
#define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
|
||
extern void ecoff_relocate_efi PARAMS ((struct symbol *, CORE_ADDR));
|
||
|
||
/* 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 {
|
||
long numargs; /* number of args to procedure (was iopt) */
|
||
bfd_vma high_addr; /* upper address bound */
|
||
long frame_adjust; /* offset of FP from SP (used on MIPS16) */
|
||
PDR pdr; /* Procedure descriptor record */
|
||
} *mips_extra_func_info_t;
|
||
|
||
#define EXTRA_FRAME_INFO \
|
||
mips_extra_func_info_t proc_desc; \
|
||
int num_args;
|
||
|
||
#define INIT_EXTRA_FRAME_INFO(fromleaf, fci) init_extra_frame_info(fci)
|
||
extern void init_extra_frame_info PARAMS ((struct frame_info *));
|
||
|
||
#define PRINT_EXTRA_FRAME_INFO(fi) \
|
||
{ \
|
||
if (fi && fi->proc_desc && fi->proc_desc->pdr.framereg < NUM_REGS) \
|
||
printf_filtered (" frame pointer is at %s+%d\n", \
|
||
REGISTER_NAME (fi->proc_desc->pdr.framereg), \
|
||
fi->proc_desc->pdr.frameoffset); \
|
||
}
|
||
|
||
/* It takes two values to specify a frame on the MIPS.
|
||
|
||
In fact, the *PC* is the primary value that sets up a frame. The
|
||
PC is looked up to see what function it's in; symbol information
|
||
from that function tells us which register is the frame pointer
|
||
base, and what offset from there is the "virtual frame pointer".
|
||
(This is usually an offset from SP.) On most non-MIPS machines,
|
||
the primary value is the SP, and the PC, if needed, disambiguates
|
||
multiple functions with the same SP. But on the MIPS we can't do
|
||
that since the PC is not stored in the same part of the frame every
|
||
time. This does not seem to be a very clever way to set up frames,
|
||
but there is nothing we can do about that). */
|
||
|
||
#define SETUP_ARBITRARY_FRAME(argc, argv) setup_arbitrary_frame (argc, argv)
|
||
extern struct frame_info *setup_arbitrary_frame PARAMS ((int, CORE_ADDR *));
|
||
|
||
/* Convert a dbx stab register number (from `r' declaration) to a gdb REGNUM */
|
||
|
||
#define STAB_REG_TO_REGNUM(num) ((num) < 32 ? (num) : (num)+FP0_REGNUM-38)
|
||
|
||
/* Convert a ecoff register number to a gdb REGNUM */
|
||
|
||
#define ECOFF_REG_TO_REGNUM(num) ((num) < 32 ? (num) : (num)+FP0_REGNUM-32)
|
||
|
||
/* If the current gcc for for this target does not produce correct debugging
|
||
information for float parameters, both prototyped and unprototyped, then
|
||
define this macro. This forces gdb to always assume that floats are
|
||
passed as doubles and then converted in the callee.
|
||
|
||
For the mips chip, it appears that the debug info marks the parameters as
|
||
floats regardless of whether the function is prototyped, but the actual
|
||
values are passed as doubles for the non-prototyped case and floats for
|
||
the prototyped case. Thus we choose to make the non-prototyped case work
|
||
for C and break the prototyped case, since the non-prototyped case is
|
||
probably much more common. (FIXME). */
|
||
|
||
#define COERCE_FLOAT_TO_DOUBLE (current_language -> la_language == language_c)
|
||
|
||
/* Select the default mips disassembler */
|
||
|
||
#define TM_PRINT_INSN_MACH 0
|
||
|
||
|
||
/* These are defined in mdebugread.c and are used in mips-tdep.c */
|
||
extern CORE_ADDR sigtramp_address, sigtramp_end;
|
||
extern void fixup_sigtramp PARAMS ((void));
|
||
|
||
/* Defined in mips-tdep.c and used in remote-mips.c */
|
||
extern char *mips_read_processor_type PARAMS ((void));
|
||
|
||
/* Functions for dealing with MIPS16 call and return stubs. */
|
||
#define IN_SOLIB_CALL_TRAMPOLINE(pc, name) mips_in_call_stub (pc, name)
|
||
#define IN_SOLIB_RETURN_TRAMPOLINE(pc, name) mips_in_return_stub (pc, name)
|
||
#define SKIP_TRAMPOLINE_CODE(pc) mips_skip_stub (pc)
|
||
#define IGNORE_HELPER_CALL(pc) mips_ignore_helper (pc)
|
||
extern int mips_in_call_stub PARAMS ((CORE_ADDR pc, char *name));
|
||
extern int mips_in_return_stub PARAMS ((CORE_ADDR pc, char *name));
|
||
extern CORE_ADDR mips_skip_stub PARAMS ((CORE_ADDR pc));
|
||
extern int mips_ignore_helper PARAMS ((CORE_ADDR pc));
|
||
|
||
#ifndef TARGET_MIPS
|
||
#define TARGET_MIPS
|
||
#endif
|
||
|
||
/* Definitions and declarations used by mips-tdep.c and remote-mips.c */
|
||
#define MIPS_INSTLEN 4 /* Length of an instruction */
|
||
#define MIPS16_INSTLEN 2 /* Length of an instruction on MIPS16*/
|
||
#define MIPS_NUMREGS 32 /* Number of integer or float registers */
|
||
typedef unsigned long t_inst; /* Integer big enough to hold an instruction */
|
||
|
||
/* MIPS16 function addresses are odd (bit 0 is set). Here are some
|
||
macros to test, set, or clear bit 0 of addresses. */
|
||
#define IS_MIPS16_ADDR(addr) ((addr) & 1)
|
||
#define MAKE_MIPS16_ADDR(addr) ((addr) | 1)
|
||
#define UNMAKE_MIPS16_ADDR(addr) ((addr) & ~1)
|
||
|
||
#endif /* TM_MIPS_H */
|
||
|
||
/* Macros for setting and testing a bit in a minimal symbol that
|
||
marks it as 16-bit function. The MSB of the minimal symbol's
|
||
"info" field is used for this purpose. This field is already
|
||
being used to store the symbol size, so the assumption is
|
||
that the symbol size cannot exceed 2^31.
|
||
|
||
ELF_MAKE_MSYMBOL_SPECIAL
|
||
tests whether an ELF symbol is "special", i.e. refers
|
||
to a 16-bit function, and sets a "special" bit in a
|
||
minimal symbol to mark it as a 16-bit function
|
||
MSYMBOL_IS_SPECIAL tests the "special" bit in a minimal symbol
|
||
MSYMBOL_SIZE returns the size of the minimal symbol, i.e.
|
||
the "info" field with the "special" bit masked out
|
||
*/
|
||
|
||
#define ELF_MAKE_MSYMBOL_SPECIAL(sym,msym) \
|
||
{ \
|
||
if (((elf_symbol_type *)(sym))->internal_elf_sym.st_other == STO_MIPS16) { \
|
||
MSYMBOL_INFO (msym) = (char *) (((long) MSYMBOL_INFO (msym)) | 0x80000000); \
|
||
SYMBOL_VALUE_ADDRESS (msym) |= 1; \
|
||
} \
|
||
}
|
||
|
||
#define MSYMBOL_IS_SPECIAL(msym) \
|
||
(((long) MSYMBOL_INFO (msym) & 0x80000000) != 0)
|
||
#define MSYMBOL_SIZE(msym) \
|
||
((long) MSYMBOL_INFO (msym) & 0x7fffffff)
|