1 | /* |
2 | * i386 cpu parameters for qemu. |
3 | * |
4 | * Copyright (c) 2003 Fabrice Bellard |
5 | * SPDX-License-Identifier: LGPL-2.0+ |
6 | */ |
7 | |
8 | #ifndef I386_CPU_PARAM_H |
9 | #define I386_CPU_PARAM_H 1 |
10 | |
11 | #ifdef TARGET_X86_64 |
12 | # define TARGET_LONG_BITS 64 |
13 | # define TARGET_PHYS_ADDR_SPACE_BITS 52 |
14 | /* |
15 | * ??? This is really 48 bits, sign-extended, but the only thing |
16 | * accessible to userland with bit 48 set is the VSYSCALL, and that |
17 | * is handled via other mechanisms. |
18 | */ |
19 | # define TARGET_VIRT_ADDR_SPACE_BITS 47 |
20 | #else |
21 | # define TARGET_LONG_BITS 32 |
22 | # define TARGET_PHYS_ADDR_SPACE_BITS 36 |
23 | # define TARGET_VIRT_ADDR_SPACE_BITS 32 |
24 | #endif |
25 | #define TARGET_PAGE_BITS 12 |
26 | #define NB_MMU_MODES 3 |
27 | |
28 | #endif |
29 | |