1 /*Copyright (C) 2015 Free Software Foundation, Inc.
3 This file is part of GDB.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 #include "common-defs.h"
19 #include "ppc-linux.h"
28 /* Get the HWCAP from the process of GDB or GDBserver. If success,
32 ppc64_host_hwcap (unsigned long *valp
)
35 *valp
= getauxval (AT_HWCAP
);
37 unsigned long data
[2];
38 FILE *f
= fopen ("/proc/self/auxv", "r");
43 while (fread (data
, sizeof (data
), 1, f
) > 0)
45 if (data
[0] == AT_HWCAP
)
53 #endif /* HAVE_GETAUXVAL */
57 ppc64_64bit_inferior_p (long msr
)
59 unsigned long ppc_host_hwcap
= 0;
61 /* Get host's HWCAP to check whether the machine is Book E. */
62 ppc64_host_hwcap (&ppc_host_hwcap
);
64 /* We actually have a 64-bit inferior only if the certain bit of the
65 MSR is set. The PowerISA Book III-S MSR is different from the
66 PowerISA Book III-E MSR. The Book III-S MSR is 64 bits wide, and
67 its MSR[SF] is the bit 0 of a 64-bit value. Book III-E MSR is 32
68 bits wide, and its MSR[CM] is the bit 0 of a 32-bit value. */
69 if (ppc_host_hwcap
& PPC_FEATURE_BOOKE
)
70 return msr
& 0x80000000;
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