--- /dev/null
+; Options for the CRIS port of the compiler.
+
+; Copyright (C) 2005, 2007 Free Software Foundation, Inc.
+;
+; This file is part of GCC.
+;
+; 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
+; <http://www.gnu.org/licenses/>.
+
+; TARGET_MUL_BUG: Whether or not to work around multiplication
+; instruction hardware bug when generating code for models where
+; it may be present. From the trouble report for Etrax 100 LX:
+; "A multiply operation may cause incorrect cache behaviour
+; under some specific circumstances. The problem can occur if
+; the instruction following the multiply instruction causes a
+; cache miss, and multiply operand 1 (source operand) bits
+; [31:27] matches the logical mapping of the mode register
+; address (0xb0....), and bits [9:2] of operand 1 matches the
+; TLB register address (0x258-0x25f). There is such a mapping
+; in kernel mode or when the MMU is off. Normally there is no
+; such mapping in user mode, and the problem will therefore
+; probably not occur in Linux user mode programs."
+;
+; We have no sure-fire way to know from within GCC that we're
+; compiling a user program. For example, -fpic/PIC is used in
+; libgcc which is linked into the kernel. However, the
+; workaround option -mno-mul-bug can be safely used per-package
+; when compiling programs. The same goes for general user-only
+; libraries such as glibc, since there's no user-space
+; driver-like program that gets a mapping of I/O registers (all
+; on the same page, including the TLB registers).
+mmul-bug-workaround
+Target Report Mask(MUL_BUG)
+Work around bug in multiplication instruction
+
+; TARGET_ETRAX4_ADD: Instruction-set additions from Etrax 4 and up.
+; (Just "lz".)
+metrax4
+Target Report Mask(ETRAX4_ADD)
+Compile for ETRAX 4 (CRIS v3)
+
+; See cris_handle_option.
+metrax100
+Target Report RejectNegative
+Compile for ETRAX 100 (CRIS v8)
+
+; See cris_handle_option.
+mno-etrax100
+Target Report RejectNegative Undocumented
+
+mpdebug
+Target Report Mask(PDEBUG)
+Emit verbose debug information in assembly code
+
+; TARGET_CCINIT: Whether to use condition-codes generated by
+; insns other than the immediately preceding compare/test insn.
+; Used to check for errors in notice_update_cc.
+mcc-init
+Target Report Mask(CCINIT)
+Do not use condition codes from normal instructions
+
+; TARGET_SIDE_EFFECT_PREFIXES: Whether to use side-effect
+; patterns. Used to debug the [rx=ry+i] type patterns.
+mside-effects
+Target Report RejectNegative Mask(SIDE_EFFECT_PREFIXES) Undocumented
+
+mno-side-effects
+Target Report RejectNegative InverseMask(SIDE_EFFECT_PREFIXES)
+Do not emit addressing modes with side-effect assignment
+
+; TARGET_STACK_ALIGN: Whether to *keep* (not force) alignment of
+; stack at 16 (or 32, depending on TARGET_ALIGN_BY_32) bits.
+mstack-align
+Target Report RejectNegative Mask(STACK_ALIGN) Undocumented
+
+mno-stack-align
+Target Report RejectNegative InverseMask(STACK_ALIGN)
+Do not tune stack alignment
+
+; TARGET_DATA_ALIGN: Whether to do alignment on individual
+; modifiable objects.
+mdata-align
+Target Report RejectNegative Mask(DATA_ALIGN) Undocumented
+
+mno-data-align
+Target Report RejectNegative InverseMask(DATA_ALIGN)
+Do not tune writable data alignment
+
+; TARGET_CONST_ALIGN: Whether to do alignment on individual
+; non-modifiable objects.
+mconst-align
+Target Report RejectNegative Mask(CONST_ALIGN) Undocumented
+
+mno-const-align
+Target Report RejectNegative InverseMask(CONST_ALIGN)
+Do not tune code and read-only data alignment
+
+; See cris_handle_option.
+m32-bit
+Target Report RejectNegative Undocumented
+
+; See cris_handle_option.
+m32bit
+Target Report RejectNegative
+Align code and data to 32 bits
+
+; See cris_handle_option.
+m16-bit
+Target Report RejectNegative Undocumented
+
+; See cris_handle_option.
+m16bit
+Target Report RejectNegative Undocumented
+
+; See cris_handle_option.
+m8-bit
+Target Report RejectNegative Undocumented
+
+; See cris_handle_option.
+m8bit
+Target Report RejectNegative
+Don't align items in code or data
+
+; TARGET_PROLOGUE_EPILOGUE: Whether or not to omit function
+; prologue and epilogue.
+mprologue-epilogue
+Target Report RejectNegative Mask(PROLOGUE_EPILOGUE) Undocumented
+
+mno-prologue-epilogue
+Target Report RejectNegative InverseMask(PROLOGUE_EPILOGUE)
+Do not emit function prologue or epilogue
+
+; We have to handle this m-option here since we can't wash it
+; off in both CC1_SPEC and CC1PLUS_SPEC.
+
+mbest-lib-options
+Target Report RejectNegative
+Use the most feature-enabling options allowed by other options
+
+; FIXME: The following comment relates to gcc before cris.opt.
+; Check it it's still valid:
+; We must call it "override-" since calling it "no-" will cause
+; gcc.c to forget it, if there's a "later" -mbest-lib-options.
+; Kludgy, but needed for some multilibbed files.
+moverride-best-lib-options
+Target Report RejectNegative
+Override -mbest-lib-options
+
+mcpu=
+Target Report RejectNegative Joined Undocumented Var(cris_cpu_str)
+
+march=
+Target Report RejectNegative Joined Var(cris_cpu_str)
+-march=ARCH Generate code for the specified chip or CPU version
+
+mtune=
+Target Report RejectNegative Joined Var(cris_tune_str)
+-mtune=ARCH Tune alignment for the specified chip or CPU version
+
+mmax-stackframe=
+Target Report RejectNegative Joined Var(cris_max_stackframe_str)
+-mmax-stackframe=SIZE Warn when a stackframe is larger than the specified size
+
+max-stackframe=
+Target Report RejectNegative Joined Undocumented Var(cris_max_stackframe_str)
+
+; TARGET_SVINTO: Currently this just affects alignment. FIXME:
+; Redundant with TARGET_ALIGN_BY_32, or put machine stuff here?
+; This and the others below could just as well be variables and
+; TARGET_* defines in cris.h.
+Mask(SVINTO)
+
+; TARGET_ALIGN_BY_32: Say that all alignment specifications say
+; to prefer 32 rather than 16 bits.
+Mask(ALIGN_BY_32)
+
+; TARGET_AVOID_GOTPLT is referred to in the .c and the .md so we
+; need to allocate the flag and macros here.
+Mask(AVOID_GOTPLT)
projects / msp430-gcc.git / blobdiff