Subversion Repositories openrisc_2011-10-31

; Options for the OR32 port of the compiler

; This file is part of GCC.

;

; Copyright (C) 2010 Embecosm Limited

;

; GCC 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 3, or (at your option) any later

; version.

;

; GCC 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 GCC; see the file COPYING3.  If not see

; .

mhard-float

Target RejectNegative Mask(HARD_FLOAT)

Use hardware floating point

msoft-float

Target RejectNegative InverseMask(HARD_FLOAT)

Do not use hardware floating point

mdouble-float

Target Report RejectNegative Mask(DOUBLE_FLOAT)

Allow hardware floating-point instructions to cover both 32-bit and 64-bit operations

mhard-div

Target RejectNegative Mask(HARD_DIV)

Use hardware division

msoft-div

Target RejectNegative InverseMask(HARD_DIV)

Do not use hardware division

mhard-mul

Target RejectNegative Mask(HARD_MUL)

Use hardware multiplication

msoft-mul

Target RejectNegative InverseMask(HARD_MUL)

Do not use hardware multiplication

msext

Target Mask(MASK_SEXT)

Use sign-extending instructions

mcmov

Target Mask(MASK_CMOV)

Use conditional move instructions

mlogue

Target Mask(SCHED_LOGUE)

Schedule prologue/epilogue

mror

Target Mask(MASK_ROR)

Emit ROR instructions

mor32-newlib

Target RejectNegative

Link with the OR32 newlib library

mor32-newlib-uart

Target RejectNegative

Link with the OR32 newlib UART library

mnewlib

Target Report RejectNegative Var(or32_libc,or32_libc_newlib) Init(OR32_LIBC_DEFAULT)

Compile for the Linux/Gnu/newlib based toolchain

;; muclibc / mglibc are defined in linux.opt, so we can't easily re-define

;; how they are recorded.

;; We could remove linux.opt from extra_options, but that could backfire if

;; more options are added that we don't want to remove.  Hence we use

;; TARGET_HANDLE_OPTION.

muclibc

Target RejectNegative

Use uClibc

mglibc

Target RejectNegative

Use glibc (not supported)

;; provide struct padding as in previous releases.

;; Note that this will only affect STRUCTURE_SIZE_BOUNDARY, in particular

;; make 2 byte structs 4-byte alignned and sized.

;; We still use ROUND_TYPE_ALIGN to increase alignment of larger structs.

mpadstruct

Target Report RejectNegative Mask(PADSTRUCT)

Make structs a multiple of 4 bytes (warning: ABI altered)

mredzone=

Target RejectNegative Joined UInteger Var(or32_redzone) Init(128)

Set the size of the stack below sp that is assumed to be safe from interrupts.