1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/* Definitions for PA_RISC with ELF format on 64-bit Linux
Copyright (C) 1999, 2000, 2002 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 2, 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 COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#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}, \
}
/* A C expression that returns nonzero if the compiler is allowed to try to
replace register number FROM with register number TO. The frame pointer
is automatically handled. */
#define CAN_ELIMINATE(FROM, TO) 1
/* 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
|
