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/* -----------------------------------------------------------------------
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win32.S - Copyright (c) 1996, 1998, 2001, 2002 Red Hat, Inc.
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Copyright (c) 2001 John Beniton
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Copyright (c) 2002 Ranjit Mathew
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X86 Foreign Function Interface
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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``Software''), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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----------------------------------------------------------------------- */
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#include <fficonfig.h>
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# This assumes we are using gas.
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# Make room for all of the new args.
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# Place all of the ffi_prep_args in position
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# Return stack to previous state and call the function
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# FIXME: Align the stack to a 128-bit boundary to avoid
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# potential performance hits.
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# Remove the space we pushed for the args
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# Load %ecx with the return type code
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# If the return value pointer is NULL, assume no return value.
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# Even if there is no space for the return value, we are
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# obliged to handle floating-point values.
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cmpl $FFI_TYPE_FLOAT,%ecx
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cmpl $FFI_TYPE_INT,%ecx
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# Load %ecx with the pointer to storage for the return value
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cmpl $FFI_TYPE_FLOAT,%ecx
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# Load %ecx with the pointer to storage for the return value
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cmpl $FFI_TYPE_DOUBLE,%ecx
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# Load %ecx with the pointer to storage for the return value
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cmpl $FFI_TYPE_LONGDOUBLE,%ecx
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# Load %ecx with the pointer to storage for the return value
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cmpl $FFI_TYPE_SINT64,%ecx
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# Load %ecx with the pointer to storage for the return value
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cmpl $FFI_TYPE_SINT8,%ecx
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# Load %ecx with the pointer to storage for the return value
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cmpl $FFI_TYPE_SINT16,%ecx
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# Load %ecx with the pointer to storage for the return value
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# This assumes we are using gas.
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.globl _ffi_call_STDCALL
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# Make room for all of the new args.
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# Place all of the ffi_prep_args in position
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# Return stack to previous state and call the function
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# FIXME: Align the stack to a 128-bit boundary to avoid
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# potential performance hits.
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# stdcall functions pop arguments off the stack themselves
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# Load %ecx with the return type code
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# If the return value pointer is NULL, assume no return value.
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# Even if there is no space for the return value, we are
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# obliged to handle floating-point values.
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cmpl $FFI_TYPE_FLOAT,%ecx
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cmpl $FFI_TYPE_INT,%ecx
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# Load %ecx with the pointer to storage for the return value
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cmpl $FFI_TYPE_FLOAT,%ecx
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# Load %ecx with the pointer to storage for the return value
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cmpl $FFI_TYPE_DOUBLE,%ecx
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# Load %ecx with the pointer to storage for the return value
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cmpl $FFI_TYPE_LONGDOUBLE,%ecx
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# Load %ecx with the pointer to storage for the return value
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cmpl $FFI_TYPE_SINT64,%ecx
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# Load %ecx with the pointer to storage for the return value
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cmpl $FFI_TYPE_SINT8,%ecx
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# Load %ecx with the pointer to storage for the return value
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cmpl $FFI_TYPE_SINT16,%ecx
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# Load %ecx with the pointer to storage for the return value
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.ffi_call_STDCALL_end:
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.globl _ffi_closure_SYSV
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movl %edx, -12(%ebp) /* resp */
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movl %edx, 4(%esp) /* args = __builtin_dwarf_cfa () */
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movl %edx, (%esp) /* &resp */
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call _ffi_closure_SYSV_inner
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cmpl $FFI_TYPE_INT, %eax
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cmpl $FFI_TYPE_FLOAT, %eax
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cmpl $FFI_TYPE_DOUBLE, %eax
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cmpl $FFI_TYPE_LONGDOUBLE, %eax
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cmpl $FFI_TYPE_SINT64, %eax
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cmpl $FFI_TYPE_SINT8, %eax /* 1-byte struct */
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cmpl $FFI_TYPE_SINT16, %eax /* 2-bytes struct */
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.ffi_closure_SYSV_end:
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#define RAW_CLOSURE_CIF_OFFSET ((FFI_TRAMPOLINE_SIZE + 3) & ~3)
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#define RAW_CLOSURE_FUN_OFFSET (RAW_CLOSURE_CIF_OFFSET + 4)
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#define RAW_CLOSURE_USER_DATA_OFFSET (RAW_CLOSURE_FUN_OFFSET + 4)
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#define CIF_FLAGS_OFFSET 20
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.globl _ffi_closure_raw_SYSV
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_ffi_closure_raw_SYSV:
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movl RAW_CLOSURE_CIF_OFFSET(%eax), %esi /* closure->cif */
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movl RAW_CLOSURE_USER_DATA_OFFSET(%eax), %edx /* closure->user_data */
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movl %edx, 12(%esp) /* user_data */
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leal 8(%ebp), %edx /* __builtin_dwarf_cfa () */
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movl %edx, 8(%esp) /* raw_args */
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movl %edx, 4(%esp) /* &res */
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movl %esi, (%esp) /* cif */
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call *RAW_CLOSURE_FUN_OFFSET(%eax) /* closure->fun */
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movl CIF_FLAGS_OFFSET(%esi), %eax /* rtype */
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cmpl $FFI_TYPE_INT, %eax
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cmpl $FFI_TYPE_FLOAT, %eax
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cmpl $FFI_TYPE_DOUBLE, %eax
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cmpl $FFI_TYPE_LONGDOUBLE, %eax
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cmpl $FFI_TYPE_SINT64, %eax
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.ffi_closure_raw_SYSV_end:
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removed
libffi/src/x86/win32.S
