| /* |
| * Copyright (c) 2003-2005 The Regents of The University of Michigan |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer; |
| * 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; |
| * neither the name of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * 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 |
| * OWNER 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. |
| * |
| * Authors: Gabe Black |
| * Ali Saidi |
| */ |
| |
| #include "arch/sparc/utility.hh" |
| #if FULL_SYSTEM |
| #include "arch/sparc/vtophys.hh" |
| #include "mem/vport.hh" |
| #endif |
| |
| namespace SparcISA { |
| |
| |
| //The caller uses %o0-%05 for the first 6 arguments even if their floating |
| //point. Double precision floating point values take two registers/args. |
| //Quads, structs, and unions are passed as pointers. All arguments beyond |
| //the sixth are passed on the stack past the 16 word window save area, |
| //space for the struct/union return pointer, and space reserved for the |
| //first 6 arguments which the caller may use but doesn't have to. |
| uint64_t getArgument(ThreadContext *tc, int number, bool fp) { |
| #if FULL_SYSTEM |
| if (number < NumArgumentRegs) { |
| return tc->readIntReg(ArgumentReg[number]); |
| } else { |
| Addr sp = tc->readIntReg(StackPointerReg); |
| VirtualPort *vp = tc->getVirtPort(tc); |
| uint64_t arg = vp->read<uint64_t>(sp + 92 + |
| (number-NumArgumentRegs) * sizeof(uint64_t)); |
| tc->delVirtPort(vp); |
| return arg; |
| } |
| #else |
| panic("getArgument() only implemented for FULL_SYSTEM\n"); |
| M5_DUMMY_RETURN |
| #endif |
| } |
| } //namespace SPARC_ISA |