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##=============================================================================

##

##      i386.inc

##

##      i386 assembler header file

##

##=============================================================================

#####ECOSGPLCOPYRIGHTBEGIN####

## -------------------------------------------

## This file is part of eCos, the Embedded Configurable Operating System.

## Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.

##

## eCos 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 or (at your option) any later version.

##

## eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,

## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

##

## As a special exception, if other files instantiate templates or use macros

## or inline functions from this file, or you compile this file and link it

## with other works to produce a work based on this file, this file does not

## by itself cause the resulting work to be covered by the GNU General Public

## License. However the source code for this file must still be made available

## in accordance with section (3) of the GNU General Public License.

##

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## this file might be covered by the GNU General Public License.

##

## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.

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## -------------------------------------------

#####ECOSGPLCOPYRIGHTEND####

##=============================================================================

#######DESCRIPTIONBEGIN####

##

## Author(s):   jskov

## Contributors:jskov

## Date:        1999-01-20

## Purpose:     i386 definitions.

## Description: This file contains various definitions and macros that are

##              useful for writing assembly code for the i386

## Usage:

##              #include 

##              ...

##

##

######DESCRIPTIONEND####

##

##=============================================================================

#------------------------------------------------------------------------------

# Exception, interrupt and thread context save area layout

# The layout of this structure is also defined in "hal_arch.h", for C

# code. Do not change this without changing that (or vice versa).

        # See SYSV ABI4, i386 supplement (page 37-38)

        # http://www.mit.edu/afs/sipb/contrib/doc/specs/software/sysv-abi/i386-psABI-4.pdf

        # Callee save registers (eax, ecx, and edx are scratch registers)

#ifdef CYGHWR_HAL_I386_FPU

#ifdef CYGHWR_HAL_I386_FPU_SWITCH_LAZY

        .equ    i386reg_fpucontext,     0

        .equ    i386reg_edi,            i386reg_fpucontext+4

#else

        .equ    i386reg_fpstate_valid,  0

        .equ    i386reg_fpstate,        i386reg_fpstate_valid+4

#ifdef CYGHWR_HAL_I386_PENTIUM_SSE

        .equ    i386reg_simd_xmm0,      i386reg_fpstate+108

        .equ    i386reg_simd_xmm1,      i386reg_simd_xmm0+16

        .equ    i386reg_simd_xmm2,      i386reg_simd_xmm1+16

        .equ    i386reg_simd_xmm3,      i386reg_simd_xmm2+16

        .equ    i386reg_simd_xmm4,      i386reg_simd_xmm3+16

        .equ    i386reg_simd_xmm5,      i386reg_simd_xmm4+16

        .equ    i386reg_simd_xmm6,      i386reg_simd_xmm5+16

        .equ    i386reg_simd_xmm7,      i386reg_simd_xmm6+16

        .equ    i386reg_simd_mxcsr,     i386reg_simd_xmm7+16

        .equ    i386reg_fpstate_size,   i386reg_simd_mxcsr+4

#else

        .equ    i386reg_fpstate_size,   i386reg_fpstate+108

#endif

        .equ    i386reg_edi,            i386reg_fpstate_size

#endif

#else

        .equ    i386reg_edi,            0

# endif

        .equ    i386reg_esi,            i386reg_edi+4

        .equ    i386reg_ebp,            i386reg_esi+4

        .equ    i386reg_esp,            i386reg_ebp+4

        .equ    i386reg_ebx,            i386reg_esp+4

        .equ    i386reg_edx,            i386reg_ebx+4

        .equ    i386reg_ecx,            i386reg_edx+4

        .equ    i386reg_eax,            i386reg_ecx+4

        .equ    i386reg_vector,         i386reg_eax+4

        .equ    i386reg_eip,            i386reg_vector+4

        .equ    i386reg_cs,             i386reg_eip+4

        .equ    i386reg_eflags,         i386reg_cs+4

        .equ    i386reg_context_size,   i386reg_eflags+4

#if defined(CYGHWR_HAL_I386_FPU) && defined(CYGHWR_HAL_I386_FPU_SWITCH_LAZY)

        .equ    i386reg_fpucontext_valid,       0

        .equ    i386reg_fpucontext_state,       i386reg_fpucontext_valid+4

#ifdef CYGHWR_HAL_I386_PENTIUM_SSE

        .equ    i386reg_simd_xmm0,              i386reg_fpucontext_state+108

        .equ    i386reg_simd_xmm1,              i386reg_simd_xmm0+16

        .equ    i386reg_simd_xmm2,              i386reg_simd_xmm1+16

        .equ    i386reg_simd_xmm3,              i386reg_simd_xmm2+16

        .equ    i386reg_simd_xmm4,              i386reg_simd_xmm3+16

        .equ    i386reg_simd_xmm5,              i386reg_simd_xmm4+16

        .equ    i386reg_simd_xmm6,              i386reg_simd_xmm5+16

        .equ    i386reg_simd_xmm7,              i386reg_simd_xmm6+16

        .equ    i386reg_simd_mxcsr,             i386reg_simd_xmm7+16

        .equ    i386reg_fpucontext_size,        i386reg_simd_mxcsr+4

#else

        .equ    i386reg_fpucontext_size,        i386reg_fpucontext_state+108

#endif

#endif

#------------------------------------------------------------------------------

# end of i386.inc