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Side by Side Diff: sim/arm/armvirt.c

Issue 124383005: GDB 7.6.50 (Closed) Base URL: http://git.chromium.org/native_client/nacl-gdb.git@upstream
Patch Set: Created 6 years, 11 months ago
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1 /* armvirt.c -- ARMulator virtual memory interace: ARM6 Instruction Emulator. 1 /* armvirt.c -- ARMulator virtual memory interace: ARM6 Instruction Emulator.
2 Copyright (C) 1994 Advanced RISC Machines Ltd. 2 Copyright (C) 1994 Advanced RISC Machines Ltd.
3 3
4 This program is free software; you can redistribute it and/or modify 4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by 5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or 6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version. 7 (at your option) any later version.
8 8
9 This program is distributed in the hope that it will be useful, 9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of 10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details. 12 GNU General Public License for more details.
13 13
14 You should have received a copy of the GNU General Public License 14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software 15 along with this program; if not, see <http://www.gnu.org/licenses/>. */
16 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, U SA. */
17 16
18 /* This file contains a complete ARMulator memory model, modelling a 17 /* This file contains a complete ARMulator memory model, modelling a
19 "virtual memory" system. A much simpler model can be found in armfast.c, 18 "virtual memory" system. A much simpler model can be found in armfast.c,
20 and that model goes faster too, but has a fixed amount of memory. This 19 and that model goes faster too, but has a fixed amount of memory. This
21 model's memory has 64K pages, allocated on demand from a 64K entry page 20 model's memory has 64K pages, allocated on demand from a 64K entry page
22 table. The routines PutWord and GetWord implement this. Pages are never 21 table. The routines PutWord and GetWord implement this. Pages are never
23 freed as they might be needed again. A single area of memory may be 22 freed as they might be needed again. A single area of memory may be
24 defined to generate aborts. */ 23 defined to generate aborts. */
25 24
26 #include "armopts.h" 25 #include "armopts.h"
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513 { 512 {
514 ARMword temp, offset; 513 ARMword temp, offset;
515 514
516 temp = GetWord (state, address, FALSE); 515 temp = GetWord (state, address, FALSE);
517 offset = (((ARMword) state->bigendSig * 3) ^ (address & 3)) << 3; 516 offset = (((ARMword) state->bigendSig * 3) ^ (address & 3)) << 3;
518 517
519 PutWord (state, address, 518 PutWord (state, address,
520 (temp & ~(0xffL << offset)) | ((data & 0xffL) << offset), 519 (temp & ~(0xffL << offset)) | ((data & 0xffL) << offset),
521 FALSE); 520 FALSE);
522 } 521 }
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