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#------------------------------------------------------------------------------
#
# OS X Application requires 16 byte stack alignment. The problem is these
# APIs are exposed to code that does not have this requirement via
# EFI_UNIX_THUNK_PROTOCOL. So these are wrapper functions that make sure
# the stack is aligned. This code should also work if the stack is already
# aligned. Extra stack padding is really the same as local varaibles so
# it gets freed by the leave instruction
#
# I basically used the compiler, added extra 16 bytes to the local stack and
# made sure %esp ended in 0 before the call (16 byte algined)
#
# The EFI_UNIX_THUNK_PROTOCOL member functions call a C API that then calls
# one of these generic assembly routines. We do it that way to work around
# some magic name changing that happens in C. For example stat() is _stat()
# on Leopard and _stat$INDOE64 on Snow Leopard. That is why we pass stat()
# into one of these gaskets from C code.
#
# Copyright (c) 2008 - 2009 Apple Inc. All rights reserved.
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.php
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#
#------------------------------------------------------------------------------
#ifdef __APPLE__
.text
#------------------------------------------------------------------------------
# int GasketVoid (void *api)
#------------------------------------------------------------------------------
.globl _GasketVoid
_GasketVoid:
pushl %ebp
movl %esp, %ebp
subl $34, %esp # sub extra 0x10 from the stack for the AND
and $-16, %esp # stack needs to end in 0xFFFFFFF0 before call
movl 8(%ebp), %eax
movl %eax, -12(%ebp)
movl -12(%ebp), %eax
call *%eax
leave
ret
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
.globl _GasketUintn
_GasketUintn:
pushl %ebp
movl %esp, %ebp
subl $50, %esp # sub extra 0x10 from the stack for the AND
and $-16, %esp # stack needs to end in 0xFFFFFFF0 before call
movl 8(%ebp), %eax
movl %eax, -12(%ebp)
movl 12(%ebp), %eax
movl %eax, (%esp)
movl -12(%ebp), %eax
call *%eax
leave
ret
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
.globl _GasketUintnUintn
_GasketUintnUintn:
pushl %ebp
movl %esp, %ebp
subl $50, %esp # sub extra 0x10 from the stack for the AND
and $-16, %esp # stack needs to end in 0xFFFFFFF0 before call
movl 8(%ebp), %eax
movl %eax, -12(%ebp)
movl 16(%ebp), %eax
movl %eax, 4(%esp)
movl 12(%ebp), %eax
movl %eax, (%esp)
movl -12(%ebp), %eax
call *%eax
leave
ret
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
.globl _GasketUintnUintnUintn
_GasketUintnUintnUintn:
pushl %ebp
movl %esp, %ebp
subl $50, %esp # sub extra 0x10 from the stack for the AND
and $-16, %esp # stack needs to end in 0xFFFFFFF0 before call
movl 8(%ebp), %eax
movl %eax, -12(%ebp)
movl 20(%ebp), %eax
movl %eax, 8(%esp)
movl 16(%ebp), %eax
movl %eax, 4(%esp)
movl 12(%ebp), %eax
movl %eax, (%esp)
movl -12(%ebp), %eax
call *%eax
leave
ret
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
.globl _GasketUintnUintnUintnUintn
_GasketUintnUintnUintnUintn:
pushl %ebp
movl %esp, %ebp
subl $50, %esp # sub extra 0x10 from the stack for the AND
and $-16, %esp # stack needs to end in 0xFFFFFFF0 before call
movl 8(%ebp), %eax
movl %eax, -12(%ebp)
movl 24(%ebp), %eax
movl %eax, 12(%esp)
movl 20(%ebp), %eax
movl %eax, 8(%esp)
movl 16(%ebp), %eax
movl %eax, 4(%esp)
movl 12(%ebp), %eax
movl %eax, (%esp)
movl -12(%ebp), %eax
call *%eax
leave
ret
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
.globl _GasketUintn10Args
_GasketUintn10Args:
pushl %ebp
movl %esp, %ebp
subl $82, %esp # sub extra 0x10 from the stack for the AND
and $-16, %esp # stack needs to end in 0xFFFFFFF0 before call
movl 8(%ebp), %eax
movl %eax, -12(%ebp)
movl 48(%ebp), %eax
movl %eax, 36(%esp)
movl 44(%ebp), %eax
movl %eax, 32(%esp)
movl 40(%ebp), %eax
movl %eax, 28(%esp)
movl 36(%ebp), %eax
movl %eax, 24(%esp)
movl 32(%ebp), %eax
movl %eax, 20(%esp)
movl 28(%ebp), %eax
movl %eax, 16(%esp)
movl 24(%ebp), %eax
movl %eax, 12(%esp)
movl 20(%ebp), %eax
movl %eax, 8(%esp)
movl 16(%ebp), %eax
movl %eax, 4(%esp)
movl 12(%ebp), %eax
movl %eax, (%esp)
movl -12(%ebp), %eax
call *%eax
leave
ret
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
.globl _GasketUint64Uintn
_GasketUint64Uintn:
pushl %ebp
movl %esp, %ebp
subl $66, %esp # sub extra 0x10 from the stack for the AND
and $-16, %esp # stack needs to end in 0xFFFFFFF0 before call
movl 12(%ebp), %eax
movl %eax, -32(%ebp)
movl 16(%ebp), %eax
movl %eax, -28(%ebp)
movl 8(%ebp), %eax
movl %eax, -12(%ebp)
movl 20(%ebp), %eax
movl %eax, 8(%esp)
movl -32(%ebp), %eax
movl -28(%ebp), %edx
movl %eax, (%esp)
movl %edx, 4(%esp)
movl -12(%ebp), %eax
call *%eax
leave
ret
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
.globl _GasketUintnUint64Uintn
_GasketUintnUint64Uintn:
pushl %ebp
movl %esp, %ebp
subl $66, %esp # sub extra 0x10 from the stack for the AND
and $-16, %esp # stack needs to end in 0xFFFFFFF0 before call
movl 16(%ebp), %eax
movl %eax, -32(%ebp)
movl 20(%ebp), %eax
movl %eax, -28(%ebp)
movl 8(%ebp), %eax
movl %eax, -12(%ebp)
movl 24(%ebp), %eax
movl %eax, 12(%esp)
movl -32(%ebp), %eax
movl -28(%ebp), %edx
movl %eax, 4(%esp)
movl %edx, 8(%esp)
movl 12(%ebp), %eax
movl %eax, (%esp)
movl -12(%ebp), %eax
call *%eax
leave
ret
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
.globl _GasketUintnUint16
_GasketUintnUint16:
pushl %ebp
movl %esp, %ebp
subl $66, %esp # sub extra 0x10 from the stack for the AND
and $-16, %esp # stack needs to end in 0xFFFFFFF0 before call
movl 16(%ebp), %eax
movw %ax, -28(%ebp)
movl 8(%ebp), %eax
movl %eax, -12(%ebp)
movzwl -28(%ebp), %eax
movl %eax, 4(%esp)
movl 12(%ebp), %eax
movl %eax, (%esp)
movl -12(%ebp), %eax
call *%eax
leave
ret
.subsections_via_symbols
#endif
|
