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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [config/] [pa/] [pa64-linux.h] - Rev 297
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/* Definitions for PA_RISC with ELF format on 64-bit Linux Copyright (C) 1999, 2000, 2002, 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/>. */ #if 0 /* needs some work :-( */ /* If defined, this macro specifies a table of register pairs used to eliminate unneeded registers that point into the stack frame. */ #define ELIMINABLE_REGS \ { \ {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ {ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ } /* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It specifies the initial difference between the specified pair of registers. This macro must be defined if `ELIMINABLE_REGS' is defined. */ #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ do \ { \ int fsize; \ \ fsize = compute_frame_size (get_frame_size (), 0); \ if ((TO) == FRAME_POINTER_REGNUM \ && (FROM) == ARG_POINTER_REGNUM) \ { \ (OFFSET) = -16; \ break; \ } \ \ gcc_assert ((TO) == STACK_POINTER_REGNUM); \ \ switch (FROM) \ { \ case FRAME_POINTER_REGNUM: \ (OFFSET) = - fsize; \ break; \ \ case ARG_POINTER_REGNUM: \ (OFFSET) = - fsize - 16; \ break; \ \ default: \ gcc_unreachable (); \ } \ } while (0) #endif
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