/* Macro definitions for GDB on an Intel i[345]86.
|
/* Macro definitions for GDB on an Intel i[345]86.
|
Copyright (C) 1995, 1996, 2000 Free Software Foundation, Inc.
|
Copyright (C) 1995, 1996, 2000 Free Software Foundation, Inc.
|
|
|
This file is part of GDB.
|
This file is part of GDB.
|
|
|
This program is free software; you can redistribute it and/or modify
|
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
|
it under the terms of the GNU General Public License as published by
|
the Free Software Foundation; either version 2 of the License, or
|
the Free Software Foundation; either version 2 of the License, or
|
(at your option) any later version.
|
(at your option) any later version.
|
|
|
This program is distributed in the hope that it will be useful,
|
This program is distributed in the hope that it will be useful,
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
GNU General Public License for more details.
|
GNU General Public License for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with this program; if not, write to the Free Software
|
along with this program; if not, write to the Free Software
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
Boston, MA 02111-1307, USA. */
|
Boston, MA 02111-1307, USA. */
|
|
|
#ifndef TM_I386_H
|
#ifndef TM_I386_H
|
#define TM_I386_H 1
|
#define TM_I386_H 1
|
|
|
/* Forward decl's for prototypes */
|
/* Forward decl's for prototypes */
|
struct frame_info;
|
struct frame_info;
|
struct frame_saved_regs;
|
struct frame_saved_regs;
|
struct type;
|
struct type;
|
|
|
#define TARGET_BYTE_ORDER LITTLE_ENDIAN
|
#define TARGET_BYTE_ORDER LITTLE_ENDIAN
|
|
|
/* The format used for `long double' on almost all i386 targets is the
|
/* The format used for `long double' on almost all i386 targets is the
|
i387 extended floating-point format. In fact, of all targets in the
|
i387 extended floating-point format. In fact, of all targets in the
|
GCC 2.95 tree, only OSF/1 does it different, and insists on having
|
GCC 2.95 tree, only OSF/1 does it different, and insists on having
|
a `long double' that's not `long' at all. */
|
a `long double' that's not `long' at all. */
|
|
|
#define TARGET_LONG_DOUBLE_FORMAT &floatformat_i387_ext
|
#define TARGET_LONG_DOUBLE_FORMAT &floatformat_i387_ext
|
|
|
/* Although the i386 extended floating-point has only 80 significant
|
/* Although the i386 extended floating-point has only 80 significant
|
bits, a `long double' actually takes up 96, probably to enforce
|
bits, a `long double' actually takes up 96, probably to enforce
|
alignment. */
|
alignment. */
|
|
|
#define TARGET_LONG_DOUBLE_BIT 96
|
#define TARGET_LONG_DOUBLE_BIT 96
|
|
|
/* Used for example in valprint.c:print_floating() to enable checking
|
/* Used for example in valprint.c:print_floating() to enable checking
|
for NaN's */
|
for NaN's */
|
|
|
#define IEEE_FLOAT
|
#define IEEE_FLOAT
|
|
|
/* Number of traps that happen between exec'ing the shell to run an
|
/* Number of traps that happen between exec'ing the shell to run an
|
inferior, and when we finally get to the inferior code. This is 2
|
inferior, and when we finally get to the inferior code. This is 2
|
on most implementations. */
|
on most implementations. */
|
|
|
#define START_INFERIOR_TRAPS_EXPECTED 2
|
#define START_INFERIOR_TRAPS_EXPECTED 2
|
|
|
/* Offset from address of function to start of its code.
|
/* Offset from address of function to start of its code.
|
Zero on most machines. */
|
Zero on most machines. */
|
|
|
#define FUNCTION_START_OFFSET 0
|
#define FUNCTION_START_OFFSET 0
|
|
|
/* Advance PC across any function entry prologue instructions to reach some
|
/* Advance PC across any function entry prologue instructions to reach some
|
"real" code. */
|
"real" code. */
|
|
|
#define SKIP_PROLOGUE(frompc) (i386_skip_prologue (frompc))
|
#define SKIP_PROLOGUE(frompc) (i386_skip_prologue (frompc))
|
|
|
extern int i386_skip_prologue PARAMS ((int));
|
extern int i386_skip_prologue PARAMS ((int));
|
|
|
/* Immediately after a function call, return the saved pc. Can't always go
|
/* 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
|
through the frames for this because on some machines the new frame is not
|
set up until the new function executes some instructions. */
|
set up until the new function executes some instructions. */
|
|
|
#define SAVED_PC_AFTER_CALL(frame) (read_memory_integer (read_register (SP_REGNUM), 4))
|
#define SAVED_PC_AFTER_CALL(frame) (read_memory_integer (read_register (SP_REGNUM), 4))
|
|
|
/* Stack grows downward. */
|
/* Stack grows downward. */
|
|
|
#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
|
#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
|
|
|
/* Sequence of bytes for breakpoint instruction. */
|
/* Sequence of bytes for breakpoint instruction. */
|
|
|
#define BREAKPOINT {0xcc}
|
#define BREAKPOINT {0xcc}
|
|
|
/* Amount PC must be decremented by after a breakpoint. This is often the
|
/* Amount PC must be decremented by after a breakpoint. This is often the
|
number of bytes in BREAKPOINT but not always. */
|
number of bytes in BREAKPOINT but not always. */
|
|
|
#define DECR_PC_AFTER_BREAK 1
|
#define DECR_PC_AFTER_BREAK 1
|
|
|
/* Say how long (ordinary) registers are. This is a piece of bogosity
|
/* 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
|
used in push_word and a few other places; REGISTER_RAW_SIZE is the
|
real way to know how big a register is. */
|
real way to know how big a register is. */
|
|
|
#define REGISTER_SIZE 4
|
#define REGISTER_SIZE 4
|
|
|
/* This register file is parameterized by two macros:
|
/* This register file is parameterized by two macros:
|
HAVE_I387_REGS --- register file should include i387 registers
|
HAVE_I387_REGS --- register file should include i387 registers
|
HAVE_SSE_REGS --- register file should include SSE registers
|
HAVE_SSE_REGS --- register file should include SSE registers
|
If HAVE_SSE_REGS is #defined, then HAVE_I387_REGS must also be #defined.
|
If HAVE_SSE_REGS is #defined, then HAVE_I387_REGS must also be #defined.
|
|
|
However, GDB code should not test those macros with #ifdef, since
|
However, GDB code should not test those macros with #ifdef, since
|
that makes code which is annoying to multi-arch. Instead, GDB code
|
that makes code which is annoying to multi-arch. Instead, GDB code
|
should check the values of NUM_GREGS, NUM_FREGS, and NUM_SSE_REGS,
|
should check the values of NUM_GREGS, NUM_FREGS, and NUM_SSE_REGS,
|
which will eventually get mapped onto architecture vector entries.
|
which will eventually get mapped onto architecture vector entries.
|
|
|
It's okay to use the macros in tm-*.h files, though, since those
|
It's okay to use the macros in tm-*.h files, though, since those
|
files will get completely replaced when we multi-arch anyway. */
|
files will get completely replaced when we multi-arch anyway. */
|
|
|
/* Number of general registers, present on every 32-bit x86 variant. */
|
/* Number of general registers, present on every 32-bit x86 variant. */
|
#define NUM_GREGS (16)
|
#define NUM_GREGS (16)
|
|
|
/* Number of floating-point unit registers. */
|
/* Number of floating-point unit registers. */
|
#ifdef HAVE_I387_REGS
|
#ifdef HAVE_I387_REGS
|
#define NUM_FREGS (16)
|
#define NUM_FREGS (16)
|
#else
|
#else
|
#define NUM_FREGS (0)
|
#define NUM_FREGS (0)
|
#endif
|
#endif
|
|
|
/* Number of SSE registers. */
|
/* Number of SSE registers. */
|
#ifdef HAVE_SSE_REGS
|
#ifdef HAVE_SSE_REGS
|
#define NUM_SSE_REGS (9)
|
#define NUM_SSE_REGS (9)
|
#else
|
#else
|
#define NUM_SSE_REGS (0)
|
#define NUM_SSE_REGS (0)
|
#endif
|
#endif
|
|
|
#define NUM_REGS (NUM_GREGS + NUM_FREGS + NUM_SSE_REGS)
|
#define NUM_REGS (NUM_GREGS + NUM_FREGS + NUM_SSE_REGS)
|
|
|
/* Largest number of registers we could have in any configuration. */
|
/* Largest number of registers we could have in any configuration. */
|
#define MAX_NUM_REGS (16 + 16 + 9)
|
#define MAX_NUM_REGS (16 + 16 + 9)
|
|
|
/* Initializer for an array of names of registers. There should be at least
|
/* Initializer for an array of names of registers. There should be at least
|
NUM_REGS strings in this initializer. Any excess ones are simply ignored.
|
NUM_REGS strings in this initializer. Any excess ones are simply ignored.
|
The order of the first 8 registers must match the compiler's numbering
|
The order of the first 8 registers must match the compiler's numbering
|
scheme (which is the same as the 386 scheme) and also regmap in the various
|
scheme (which is the same as the 386 scheme) and also regmap in the various
|
*-nat.c files. */
|
*-nat.c files. */
|
|
|
#define REGISTER_NAMES { "eax", "ecx", "edx", "ebx", \
|
#define REGISTER_NAMES { "eax", "ecx", "edx", "ebx", \
|
"esp", "ebp", "esi", "edi", \
|
"esp", "ebp", "esi", "edi", \
|
"eip", "eflags", "cs", "ss", \
|
"eip", "eflags", "cs", "ss", \
|
"ds", "es", "fs", "gs", \
|
"ds", "es", "fs", "gs", \
|
"st0", "st1", "st2", "st3", \
|
"st0", "st1", "st2", "st3", \
|
"st4", "st5", "st6", "st7", \
|
"st4", "st5", "st6", "st7", \
|
"fctrl", "fstat", "ftag", "fiseg", \
|
"fctrl", "fstat", "ftag", "fiseg", \
|
"fioff", "foseg", "fooff", "fop", \
|
"fioff", "foseg", "fooff", "fop", \
|
"xmm0", "xmm1", "xmm2", "xmm3", \
|
"xmm0", "xmm1", "xmm2", "xmm3", \
|
"xmm4", "xmm5", "xmm6", "xmm7", \
|
"xmm4", "xmm5", "xmm6", "xmm7", \
|
"mxcsr" \
|
"mxcsr" \
|
}
|
}
|
|
|
/* Register numbers of various important registers.
|
/* Register numbers of various important registers.
|
Note that some of these values are "real" register numbers,
|
Note that some of these values are "real" register numbers,
|
and correspond to the general registers of the machine,
|
and correspond to the general registers of the machine,
|
and some are "phony" register numbers which are too large
|
and some are "phony" register numbers which are too large
|
to be actual register numbers as far as the user is concerned
|
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. */
|
but do serve to get the desired values when passed to read_register. */
|
|
|
#define FP_REGNUM 5 /* (ebp) Contains address of executing stack
|
#define FP_REGNUM 5 /* (ebp) Contains address of executing stack
|
frame */
|
frame */
|
#define SP_REGNUM 4 /* (usp) Contains address of top of stack */
|
#define SP_REGNUM 4 /* (usp) Contains address of top of stack */
|
#define PC_REGNUM 8 /* (eip) Contains program counter */
|
#define PC_REGNUM 8 /* (eip) Contains program counter */
|
#define PS_REGNUM 9 /* (ps) Contains processor status */
|
#define PS_REGNUM 9 /* (ps) Contains processor status */
|
|
|
/* These registers are present only if HAVE_I387_REGS is #defined.
|
/* These registers are present only if HAVE_I387_REGS is #defined.
|
We promise that FP0 .. FP7 will always be consecutive register numbers. */
|
We promise that FP0 .. FP7 will always be consecutive register numbers. */
|
#define FP0_REGNUM 16 /* first FPU floating-point register */
|
#define FP0_REGNUM 16 /* first FPU floating-point register */
|
#define FP7_REGNUM 23 /* last FPU floating-point register */
|
#define FP7_REGNUM 23 /* last FPU floating-point register */
|
|
|
/* All of these control registers (except for FCOFF and FDOFF) are
|
/* All of these control registers (except for FCOFF and FDOFF) are
|
sixteen bits long (at most) in the FPU, but are zero-extended to
|
sixteen bits long (at most) in the FPU, but are zero-extended to
|
thirty-two bits in GDB's register file. This makes it easier to
|
thirty-two bits in GDB's register file. This makes it easier to
|
compute the size of the control register file, and somewhat easier
|
compute the size of the control register file, and somewhat easier
|
to convert to and from the FSAVE instruction's 32-bit format. */
|
to convert to and from the FSAVE instruction's 32-bit format. */
|
#define FIRST_FPU_CTRL_REGNUM 24
|
#define FIRST_FPU_CTRL_REGNUM 24
|
#define FCTRL_REGNUM 24 /* FPU control word */
|
#define FCTRL_REGNUM 24 /* FPU control word */
|
#define FPC_REGNUM 24 /* old name for FCTRL_REGNUM */
|
#define FPC_REGNUM 24 /* old name for FCTRL_REGNUM */
|
#define FSTAT_REGNUM 25 /* FPU status word */
|
#define FSTAT_REGNUM 25 /* FPU status word */
|
#define FTAG_REGNUM 26 /* FPU register tag word */
|
#define FTAG_REGNUM 26 /* FPU register tag word */
|
#define FCS_REGNUM 27 /* FPU instruction's code segment selector
|
#define FCS_REGNUM 27 /* FPU instruction's code segment selector
|
16 bits, called "FPU Instruction Pointer
|
16 bits, called "FPU Instruction Pointer
|
Selector" in the x86 manuals */
|
Selector" in the x86 manuals */
|
#define FCOFF_REGNUM 28 /* FPU instruction's offset within segment
|
#define FCOFF_REGNUM 28 /* FPU instruction's offset within segment
|
("Fpu Code OFFset") */
|
("Fpu Code OFFset") */
|
#define FDS_REGNUM 29 /* FPU operand's data segment */
|
#define FDS_REGNUM 29 /* FPU operand's data segment */
|
#define FDOFF_REGNUM 30 /* FPU operand's offset within segment */
|
#define FDOFF_REGNUM 30 /* FPU operand's offset within segment */
|
#define FOP_REGNUM 31 /* FPU opcode, bottom eleven bits */
|
#define FOP_REGNUM 31 /* FPU opcode, bottom eleven bits */
|
#define LAST_FPU_CTRL_REGNUM 31
|
#define LAST_FPU_CTRL_REGNUM 31
|
|
|
/* These registers are present only if HAVE_SSE_REGS is #defined.
|
/* These registers are present only if HAVE_SSE_REGS is #defined.
|
We promise that XMM0 .. XMM7 will always have consecutive reg numbers. */
|
We promise that XMM0 .. XMM7 will always have consecutive reg numbers. */
|
#define XMM0_REGNUM 32 /* first SSE data register */
|
#define XMM0_REGNUM 32 /* first SSE data register */
|
#define XMM7_REGNUM 39 /* last SSE data register */
|
#define XMM7_REGNUM 39 /* last SSE data register */
|
#define MXCSR_REGNUM 40 /* Streaming SIMD Extension control/status */
|
#define MXCSR_REGNUM 40 /* Streaming SIMD Extension control/status */
|
|
|
#define IS_FP_REGNUM(n) (FP0_REGNUM <= (n) && (n) <= FP7_REGNUM)
|
#define IS_FP_REGNUM(n) (FP0_REGNUM <= (n) && (n) <= FP7_REGNUM)
|
#define IS_SSE_REGNUM(n) (XMM0_REGNUM <= (n) && (n) <= XMM7_REGNUM)
|
#define IS_SSE_REGNUM(n) (XMM0_REGNUM <= (n) && (n) <= XMM7_REGNUM)
|
|
|
#define FPU_REG_RAW_SIZE (10)
|
#define FPU_REG_RAW_SIZE (10)
|
|
|
/* Sizes of individual register sets. These cover the entire register
|
/* Sizes of individual register sets. These cover the entire register
|
file, so summing up the sizes of those portions actually present
|
file, so summing up the sizes of those portions actually present
|
yields REGISTER_BYTES. */
|
yields REGISTER_BYTES. */
|
#define SIZEOF_GREGS (NUM_GREGS * 4)
|
#define SIZEOF_GREGS (NUM_GREGS * 4)
|
#define SIZEOF_FPU_REGS (8 * FPU_REG_RAW_SIZE)
|
#define SIZEOF_FPU_REGS (8 * FPU_REG_RAW_SIZE)
|
#define SIZEOF_FPU_CTRL_REGS \
|
#define SIZEOF_FPU_CTRL_REGS \
|
((LAST_FPU_CTRL_REGNUM - FIRST_FPU_CTRL_REGNUM + 1) * 4)
|
((LAST_FPU_CTRL_REGNUM - FIRST_FPU_CTRL_REGNUM + 1) * 4)
|
#define SIZEOF_SSE_REGS (8 * 16 + 4)
|
#define SIZEOF_SSE_REGS (8 * 16 + 4)
|
|
|
|
|
/* Total amount of space needed to store our copies of the machine's register
|
/* Total amount of space needed to store our copies of the machine's register
|
state, the array `registers'. */
|
state, the array `registers'. */
|
#ifdef HAVE_SSE_REGS
|
#ifdef HAVE_SSE_REGS
|
#define REGISTER_BYTES \
|
#define REGISTER_BYTES \
|
(SIZEOF_GREGS + SIZEOF_FPU_REGS + SIZEOF_FPU_CTRL_REGS + SIZEOF_SSE_REGS)
|
(SIZEOF_GREGS + SIZEOF_FPU_REGS + SIZEOF_FPU_CTRL_REGS + SIZEOF_SSE_REGS)
|
#else
|
#else
|
#ifdef HAVE_I387_REGS
|
#ifdef HAVE_I387_REGS
|
#define REGISTER_BYTES (SIZEOF_GREGS + SIZEOF_FPU_REGS + SIZEOF_FPU_CTRL_REGS)
|
#define REGISTER_BYTES (SIZEOF_GREGS + SIZEOF_FPU_REGS + SIZEOF_FPU_CTRL_REGS)
|
#else
|
#else
|
#define REGISTER_BYTES (SIZEOF_GREGS)
|
#define REGISTER_BYTES (SIZEOF_GREGS)
|
#endif
|
#endif
|
#endif
|
#endif
|
|
|
/* Index within `registers' of the first byte of the space for register N. */
|
/* Index within `registers' of the first byte of the space for register N. */
|
#define REGISTER_BYTE(n) (i386_register_byte[(n)])
|
#define REGISTER_BYTE(n) (i386_register_byte[(n)])
|
extern int i386_register_byte[];
|
extern int i386_register_byte[];
|
|
|
/* Number of bytes of storage in the actual machine representation for
|
/* Number of bytes of storage in the actual machine representation for
|
register N. */
|
register N. */
|
#define REGISTER_RAW_SIZE(n) (i386_register_raw_size[(n)])
|
#define REGISTER_RAW_SIZE(n) (i386_register_raw_size[(n)])
|
extern int i386_register_raw_size[];
|
extern int i386_register_raw_size[];
|
|
|
/* Largest value REGISTER_RAW_SIZE can have. */
|
/* Largest value REGISTER_RAW_SIZE can have. */
|
#define MAX_REGISTER_RAW_SIZE 16
|
#define MAX_REGISTER_RAW_SIZE 16
|
|
|
/* Number of bytes of storage in the program's representation
|
/* Number of bytes of storage in the program's representation
|
for register N. */
|
for register N. */
|
#define REGISTER_VIRTUAL_SIZE(n) (i386_register_virtual_size[(n)])
|
#define REGISTER_VIRTUAL_SIZE(n) (i386_register_virtual_size[(n)])
|
extern int i386_register_virtual_size[];
|
extern int i386_register_virtual_size[];
|
|
|
/* Largest value REGISTER_VIRTUAL_SIZE can have. */
|
/* Largest value REGISTER_VIRTUAL_SIZE can have. */
|
#define MAX_REGISTER_VIRTUAL_SIZE 16
|
#define MAX_REGISTER_VIRTUAL_SIZE 16
|
|
|
/* Return the GDB type object for the "standard" data type of data in
|
/* Return the GDB type object for the "standard" data type of data in
|
register N. Perhaps si and di should go here, but potentially they
|
register N. Perhaps si and di should go here, but potentially they
|
could be used for things other than address. */
|
could be used for things other than address. */
|
|
|
#define REGISTER_VIRTUAL_TYPE(N) \
|
#define REGISTER_VIRTUAL_TYPE(N) \
|
(((N) == PC_REGNUM || (N) == FP_REGNUM || (N) == SP_REGNUM) \
|
(((N) == PC_REGNUM || (N) == FP_REGNUM || (N) == SP_REGNUM) \
|
? lookup_pointer_type (builtin_type_void) \
|
? lookup_pointer_type (builtin_type_void) \
|
: IS_FP_REGNUM(N) ? builtin_type_long_double \
|
: IS_FP_REGNUM(N) ? builtin_type_long_double \
|
: IS_SSE_REGNUM(N) ? builtin_type_v4sf \
|
: IS_SSE_REGNUM(N) ? builtin_type_v4sf \
|
: builtin_type_int)
|
: builtin_type_int)
|
|
|
/* REGISTER_CONVERTIBLE(N) is true iff register N's virtual format is
|
/* REGISTER_CONVERTIBLE(N) is true iff register N's virtual format is
|
different from its raw format. Note that this definition assumes
|
different from its raw format. Note that this definition assumes
|
that the host supports IEEE 32-bit floats, since it doesn't say
|
that the host supports IEEE 32-bit floats, since it doesn't say
|
that SSE registers need conversion. Even if we can't find a
|
that SSE registers need conversion. Even if we can't find a
|
counterexample, this is still sloppy. */
|
counterexample, this is still sloppy. */
|
#define REGISTER_CONVERTIBLE(n) (IS_FP_REGNUM (n))
|
#define REGISTER_CONVERTIBLE(n) (IS_FP_REGNUM (n))
|
|
|
/* Convert data from raw format for register REGNUM in buffer FROM to
|
/* Convert data from raw format for register REGNUM in buffer FROM to
|
virtual format with type TYPE in buffer TO. */
|
virtual format with type TYPE in buffer TO. */
|
|
|
#define REGISTER_CONVERT_TO_VIRTUAL(regnum, type, from, to) \
|
#define REGISTER_CONVERT_TO_VIRTUAL(regnum, type, from, to) \
|
i386_register_convert_to_virtual ((regnum), (type), (from), (to));
|
i386_register_convert_to_virtual ((regnum), (type), (from), (to));
|
extern void i386_register_convert_to_virtual (int regnum, struct type *type,
|
extern void i386_register_convert_to_virtual (int regnum, struct type *type,
|
char *from, char *to);
|
char *from, char *to);
|
|
|
/* Convert data from virtual format with type TYPE in buffer FROM to
|
/* Convert data from virtual format with type TYPE in buffer FROM to
|
raw format for register REGNUM in buffer TO. */
|
raw format for register REGNUM in buffer TO. */
|
|
|
#define REGISTER_CONVERT_TO_RAW(type, regnum, from, to) \
|
#define REGISTER_CONVERT_TO_RAW(type, regnum, from, to) \
|
i386_register_convert_to_raw ((type), (regnum), (from), (to));
|
i386_register_convert_to_raw ((type), (regnum), (from), (to));
|
extern void i386_register_convert_to_raw (struct type *type, int regnum,
|
extern void i386_register_convert_to_raw (struct type *type, int regnum,
|
char *from, char *to);
|
char *from, char *to);
|
|
|
/* Print out the i387 floating point state. */
|
/* Print out the i387 floating point state. */
|
#ifdef HAVE_I387_REGS
|
#ifdef HAVE_I387_REGS
|
extern void i387_float_info (void);
|
extern void i387_float_info (void);
|
#define FLOAT_INFO { i387_float_info (); }
|
#define FLOAT_INFO { i387_float_info (); }
|
#endif
|
#endif
|
|
|
|
|
/* Store the address of the place in which to copy the structure the
|
/* Store the address of the place in which to copy the structure the
|
subroutine will return. This is called from call_function. */
|
subroutine will return. This is called from call_function. */
|
|
|
#define STORE_STRUCT_RETURN(ADDR, SP) \
|
#define STORE_STRUCT_RETURN(ADDR, SP) \
|
{ char buf[REGISTER_SIZE]; \
|
{ char buf[REGISTER_SIZE]; \
|
(SP) -= sizeof (ADDR); \
|
(SP) -= sizeof (ADDR); \
|
store_address (buf, sizeof (ADDR), ADDR); \
|
store_address (buf, sizeof (ADDR), ADDR); \
|
write_memory ((SP), buf, sizeof (ADDR)); }
|
write_memory ((SP), buf, sizeof (ADDR)); }
|
|
|
/* Extract from an array REGBUF containing the (raw) register state
|
/* Extract from an array REGBUF containing the (raw) register state
|
a function return value of type TYPE, and copy that, in virtual format,
|
a function return value of type TYPE, and copy that, in virtual format,
|
into VALBUF. */
|
into VALBUF. */
|
|
|
#define EXTRACT_RETURN_VALUE(type, regbuf, valbuf) \
|
#define EXTRACT_RETURN_VALUE(type, regbuf, valbuf) \
|
i386_extract_return_value ((type), (regbuf), (valbuf))
|
i386_extract_return_value ((type), (regbuf), (valbuf))
|
extern void i386_extract_return_value (struct type *type, char *regbuf,
|
extern void i386_extract_return_value (struct type *type, char *regbuf,
|
char *valbuf);
|
char *valbuf);
|
|
|
/* Write into appropriate registers a function return value of type TYPE, given
|
/* Write into appropriate registers a function return value of type TYPE, given
|
in virtual format. */
|
in virtual format. */
|
|
|
#define STORE_RETURN_VALUE(TYPE,VALBUF) \
|
#define STORE_RETURN_VALUE(TYPE,VALBUF) \
|
{ \
|
{ \
|
if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
|
if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
|
write_register_bytes (REGISTER_BYTE (FP0_REGNUM), (VALBUF), \
|
write_register_bytes (REGISTER_BYTE (FP0_REGNUM), (VALBUF), \
|
TYPE_LENGTH (TYPE)); \
|
TYPE_LENGTH (TYPE)); \
|
else \
|
else \
|
write_register_bytes (0, (VALBUF), TYPE_LENGTH (TYPE)); \
|
write_register_bytes (0, (VALBUF), TYPE_LENGTH (TYPE)); \
|
}
|
}
|
|
|
/* Extract from an array REGBUF containing the (raw) register state the address
|
/* 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
|
in which a function should return its structure value, as a CORE_ADDR (or an
|
expression that can be used as one). */
|
expression that can be used as one). */
|
|
|
#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(int *)(REGBUF))
|
#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(int *)(REGBUF))
|
|
|
/* The following redefines make backtracing through sigtramp work.
|
/* The following redefines make backtracing through sigtramp work.
|
They manufacture a fake sigtramp frame and obtain the saved pc in sigtramp
|
They manufacture a fake sigtramp frame and obtain the saved pc in sigtramp
|
from the sigcontext structure which is pushed by the kernel on the
|
from the sigcontext structure which is pushed by the kernel on the
|
user stack, along with a pointer to it. */
|
user stack, along with a pointer to it. */
|
|
|
/* FRAME_CHAIN takes a frame's nominal address and produces the frame's
|
/* FRAME_CHAIN takes a frame's nominal address and produces the frame's
|
chain-pointer.
|
chain-pointer.
|
In the case of the i386, the frame's nominal address
|
In the case of the i386, the frame's nominal address
|
is the address of a 4-byte word containing the calling frame's address. */
|
is the address of a 4-byte word containing the calling frame's address. */
|
|
|
#define FRAME_CHAIN(thisframe) \
|
#define FRAME_CHAIN(thisframe) \
|
((thisframe)->signal_handler_caller \
|
((thisframe)->signal_handler_caller \
|
? (thisframe)->frame \
|
? (thisframe)->frame \
|
: (!inside_entry_file ((thisframe)->pc) \
|
: (!inside_entry_file ((thisframe)->pc) \
|
? read_memory_integer ((thisframe)->frame, 4) \
|
? read_memory_integer ((thisframe)->frame, 4) \
|
: 0))
|
: 0))
|
|
|
/* A macro that tells us whether the function invocation represented
|
/* 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
|
by FI does not have a frame on the stack associated with it. If it
|
does not, FRAMELESS is set to 1, else 0. */
|
does not, FRAMELESS is set to 1, else 0. */
|
|
|
#define FRAMELESS_FUNCTION_INVOCATION(FI) \
|
#define FRAMELESS_FUNCTION_INVOCATION(FI) \
|
(((FI)->signal_handler_caller) ? 0 : frameless_look_for_prologue(FI))
|
(((FI)->signal_handler_caller) ? 0 : frameless_look_for_prologue(FI))
|
|
|
/* Saved Pc. Get it from sigcontext if within sigtramp. */
|
/* Saved Pc. Get it from sigcontext if within sigtramp. */
|
|
|
#define FRAME_SAVED_PC(FRAME) \
|
#define FRAME_SAVED_PC(FRAME) \
|
(((FRAME)->signal_handler_caller \
|
(((FRAME)->signal_handler_caller \
|
? sigtramp_saved_pc (FRAME) \
|
? sigtramp_saved_pc (FRAME) \
|
: read_memory_integer ((FRAME)->frame + 4, 4)) \
|
: read_memory_integer ((FRAME)->frame + 4, 4)) \
|
)
|
)
|
|
|
extern CORE_ADDR sigtramp_saved_pc PARAMS ((struct frame_info *));
|
extern CORE_ADDR sigtramp_saved_pc PARAMS ((struct frame_info *));
|
|
|
#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
|
#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
|
|
|
#define FRAME_LOCALS_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
|
/* Return number of args passed to a frame. Can return -1, meaning no way
|
to tell, which is typical now that the C compiler delays popping them. */
|
to tell, which is typical now that the C compiler delays popping them. */
|
|
|
#define FRAME_NUM_ARGS(fi) (i386_frame_num_args(fi))
|
#define FRAME_NUM_ARGS(fi) (i386_frame_num_args(fi))
|
|
|
extern int i386_frame_num_args PARAMS ((struct frame_info *));
|
extern int i386_frame_num_args PARAMS ((struct frame_info *));
|
|
|
/* Return number of bytes at start of arglist that are not really args. */
|
/* Return number of bytes at start of arglist that are not really args. */
|
|
|
#define FRAME_ARGS_SKIP 8
|
#define FRAME_ARGS_SKIP 8
|
|
|
/* Put here the code to store, into a struct frame_saved_regs,
|
/* Put here the code to store, into a struct frame_saved_regs,
|
the addresses of the saved registers of frame described by FRAME_INFO.
|
the addresses of the saved registers of frame described by FRAME_INFO.
|
This includes special registers such as pc and fp saved in special
|
This includes special registers such as pc and fp saved in special
|
ways in the stack frame. sp is even more special:
|
ways in the stack frame. sp is even more special:
|
the address we return for it IS the sp for the next frame. */
|
the address we return for it IS the sp for the next frame. */
|
|
|
extern void i386_frame_init_saved_regs PARAMS ((struct frame_info *));
|
extern void i386_frame_init_saved_regs PARAMS ((struct frame_info *));
|
#define FRAME_INIT_SAVED_REGS(FI) i386_frame_init_saved_regs (FI)
|
#define FRAME_INIT_SAVED_REGS(FI) i386_frame_init_saved_regs (FI)
|
|
|
|
|
|
|
/* Things needed for making the inferior call functions. */
|
/* Things needed for making the inferior call functions. */
|
|
|
/* "An argument's size is increased, if necessary, to make it a
|
/* "An argument's size is increased, if necessary, to make it a
|
multiple of [32 bit] words. This may require tail padding,
|
multiple of [32 bit] words. This may require tail padding,
|
depending on the size of the argument" - from the x86 ABI. */
|
depending on the size of the argument" - from the x86 ABI. */
|
#define PARM_BOUNDARY 32
|
#define PARM_BOUNDARY 32
|
|
|
/* Push an empty stack frame, to record the current PC, etc. */
|
/* Push an empty stack frame, to record the current PC, etc. */
|
|
|
#define PUSH_DUMMY_FRAME { i386_push_dummy_frame (); }
|
#define PUSH_DUMMY_FRAME { i386_push_dummy_frame (); }
|
|
|
extern void i386_push_dummy_frame PARAMS ((void));
|
extern void i386_push_dummy_frame PARAMS ((void));
|
|
|
/* Discard from the stack the innermost frame, restoring all registers. */
|
/* Discard from the stack the innermost frame, restoring all registers. */
|
|
|
#define POP_FRAME { i386_pop_frame (); }
|
#define POP_FRAME { i386_pop_frame (); }
|
|
|
extern void i386_pop_frame PARAMS ((void));
|
extern void i386_pop_frame PARAMS ((void));
|
|
|
|
|
/* this is
|
/* this is
|
* call 11223344 (32 bit relative)
|
* call 11223344 (32 bit relative)
|
* int3
|
* int3
|
*/
|
*/
|
|
|
#define CALL_DUMMY { 0x223344e8, 0xcc11 }
|
#define CALL_DUMMY { 0x223344e8, 0xcc11 }
|
|
|
#define CALL_DUMMY_LENGTH 8
|
#define CALL_DUMMY_LENGTH 8
|
|
|
#define CALL_DUMMY_START_OFFSET 0 /* Start execution at beginning of dummy */
|
#define CALL_DUMMY_START_OFFSET 0 /* Start execution at beginning of dummy */
|
|
|
#define CALL_DUMMY_BREAKPOINT_OFFSET 5
|
#define CALL_DUMMY_BREAKPOINT_OFFSET 5
|
|
|
/* Insert the specified number of args and function address
|
/* Insert the specified number of args and function address
|
into a call sequence of the above form stored at DUMMYNAME. */
|
into a call sequence of the above form stored at DUMMYNAME. */
|
|
|
#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
|
#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
|
{ \
|
{ \
|
int from, to, delta, loc; \
|
int from, to, delta, loc; \
|
loc = (int)(read_register (SP_REGNUM) - CALL_DUMMY_LENGTH); \
|
loc = (int)(read_register (SP_REGNUM) - CALL_DUMMY_LENGTH); \
|
from = loc + 5; \
|
from = loc + 5; \
|
to = (int)(fun); \
|
to = (int)(fun); \
|
delta = to - from; \
|
delta = to - from; \
|
*((char *)(dummyname) + 1) = (delta & 0xff); \
|
*((char *)(dummyname) + 1) = (delta & 0xff); \
|
*((char *)(dummyname) + 2) = ((delta >> 8) & 0xff); \
|
*((char *)(dummyname) + 2) = ((delta >> 8) & 0xff); \
|
*((char *)(dummyname) + 3) = ((delta >> 16) & 0xff); \
|
*((char *)(dummyname) + 3) = ((delta >> 16) & 0xff); \
|
*((char *)(dummyname) + 4) = ((delta >> 24) & 0xff); \
|
*((char *)(dummyname) + 4) = ((delta >> 24) & 0xff); \
|
}
|
}
|
|
|
extern void print_387_control_word PARAMS ((unsigned int));
|
extern void print_387_control_word PARAMS ((unsigned int));
|
extern void print_387_status_word PARAMS ((unsigned int));
|
extern void print_387_status_word PARAMS ((unsigned int));
|
|
|
/* Offset from SP to first arg on stack at first instruction of a function */
|
/* Offset from SP to first arg on stack at first instruction of a function */
|
|
|
#define SP_ARG0 (1 * 4)
|
#define SP_ARG0 (1 * 4)
|
|
|
#endif /* ifndef TM_I386_H */
|
#endif /* ifndef TM_I386_H */
|
|
|
