mpir/mpn/x86_64w/yasm_mac.inc

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; Copyright (C) 2009, 2008 Brian Gladman
;
; All rights reserved.
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions are
; met:
; 1. Redistributions of source code must retain the above copyright notice,
; this list of conditions and the following disclaimer.
;
; 2. Redistributions in binary form must reproduce the above copyright
; notice, this list of conditions and the following disclaimer in the
; documentation and/or other materials provided with the distribution.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
; ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
; PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
; HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
; TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
; PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;
; Standardised register numbering scheme
%define r0 rax
%define r1 rdx
%define r2 rcx
%define r3 rbx
%define r4 rsi
%define r5 rdi
%define r6 rbp
%define r7 rsp
%define r0d eax
%define r1d edx
%define r2d ecx
%define r3d ebx
%define r4d esi
%define r5d edi
%define r6d ebp
%define r7d esp
%define r0w ax
%define r1w dx
%define r2w cx
%define r3w bx
%define r4w si
%define r5w di
%define r6w bp
%define r7w sp
%define r0b al
%define r1b dl
%define r2b cl
%define r3b bl
%define r4b sil
%define r5b dil
%define r6b bpl
%define r7b spl
; Standard macro for alignment (used to allow easy subsititution of
; alternative padding schemes)
%macro xalign 1
align %1
%endmacro
; YASM macros for handling Windows Prologues and Epilogues
;
; Copyright 2008, 2009 Brian Gladman
;
; Windows x64 prologue macro
;
; prologue name, stack_slots, register_save_list
;
; name: routine name
; register_save_list: comma separated list of registers to save
; stack_slots: stack space needed in 8 byte units
; Windows x64 epilogue macro
;
; epilogue register_save_list
;
; register_save_list: comma separated list of registers to save
; in same order used in prologue
;
; On return the macro variable 'stack_use' gives the total number
; of bytes used on the stack. This allows the function parameters
; to be accessed at [rsp + stack_use + 8 * n] where n starts at 1
; (for n = 1..4 this is shadow space for a register parameter)
%macro FRAME_PROC 2-*
global __g%1
%ifdef DLL
export __g%1
%endif
PROC_FRAME __g%1
%rotate 1
%if %1 < 0
%error Negative stack allocation not allowed
%else
%if (%0 & 1) == (%1 & 1)
%assign stack_use 8 * (%1 + 1)
%else
%assign stack_use 8 * %1
%endif
%endif
%rotate 1
%if %0 > 2
%rep %0 - 2
push_reg %1
%rotate 1
%endrep
%endif
%if stack_use > 0
alloc_stack stack_use
%endif
%assign stack_use stack_use + 8 * (%0 - 2)
END_PROLOGUE
%endmacro
%macro END_PROC 0-*
add rsp, stack_use - 8 * %0
%if %0 > 0
%rep %0
%rotate -1
pop %1
%endrep
%endif
ret
ENDPROC_FRAME
%endmacro
%macro LEAF_PROC 1
global __g%1
%ifdef DLL
export __g%1
%endif
__g%1:
%endmacro
; Macros for using assembler code using the GCC Calling
; Conventions in Windows.
; Note that these macros loads integer parameters that
; are 32-bits as 64-bit integers with no zero or sign
; extension. For such parameters either 'mov rxd, rxd'
; (for unsigned) or 'movsxd rx, rxd' (for signed) will
; be needed before they are used as 64-bit integers.
; These macros move the first six integer parameters
; from Microsoft ABI calling calling conventions to
; those used by GCC:
;
; function( MSVC --> GCC
; p1, rcx rdi
; p2, rdx rsi
; p3, r8 rdx
; p4, r9 rcx
; p5, [rsp+40] r8
; p6, [rsp+48] r9
;
; As already discussed, care must be taken with 32-bit
; values in 64-bit registers or on the stack because
; the upper 32-bits of such parameters are undefined.
;
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; WIN64_GCC_PROC name, n_parms, (frame | leaf)
;
; WIN64_GCC_END frame | leaf
;
; name subroutine name
; n_parms number of parameters (default 6)
; type frame or leaf function (default frame)
;
; These defines are also used:
;
; reg_save_list list of registers to be saved
; and restored
; stack_slots number of 8 byte slots needed
; on the stack (excluding the
; register save/restore space)
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%macro WIN64_GCC_PROC 1-3 6, frame
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%ifidn %3, frame
%ifndef reg_save_list
%define reg_save_list rsi, rdi
%endif
%ifndef stack_slots
%define stack_slots 0
%endif
FRAME_PROC %1, stack_slots, reg_save_list
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%elifidn %3, leaf
LEAF_PROC %1
%else
%error no (or wrong) function type defined
%endif
%if %2 > 0
mov rdi, rcx
%endif
%if %2 > 1
mov rsi, rdx
%endif
%if %2 > 2
mov rdx, r8
%endif
%if %2 > 3
mov rcx, r9
%endif
%if %2 > 4
mov r8, [rsp + stack_use + 40]
%endif
%if %2 > 5
mov r9, [rsp + stack_use + 48]
%endif
%endmacro
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%macro WIN64_GCC_END 0-1 frame
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%ifidn %1, frame
END_PROC reg_save_list
%elifidn %1, leaf
ret
%else
%error no (or wrong) function type defined
%endif
%endmacro