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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/config/pa/pa64-linux.h
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Diffstat (limited to 'gcc/config/pa/pa64-linux.h')
-rw-r--r--gcc/config/pa/pa64-linux.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/gcc/config/pa/pa64-linux.h b/gcc/config/pa/pa64-linux.h
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+++ b/gcc/config/pa/pa64-linux.h
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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