1 /* 2 * Target page sizes and friends for non target files 3 * 4 * Copyright (c) 2017 Red Hat Inc 5 * 6 * Authors: 7 * David Alan Gilbert <dgilbert@redhat.com> 8 * Juan Quintela <quintela@redhat.com> 9 * 10 * This work is licensed under the terms of the GNU GPL, version 2 or later. 11 * See the COPYING file in the top-level directory. 12 */ 13 14 #ifndef EXEC_TARGET_PAGE_H 15 #define EXEC_TARGET_PAGE_H 16 17 /* 18 * If compiling per-target, get the real values. 19 * For generic code, reuse the mechanism for variable page size. 20 */ 21 #ifdef COMPILING_PER_TARGET 22 #include "cpu-param.h" 23 #include "exec/target_long.h" 24 #define TARGET_PAGE_TYPE target_long 25 #else 26 #define TARGET_PAGE_BITS_VARY 27 #define TARGET_PAGE_TYPE int 28 #endif 29 30 #ifdef TARGET_PAGE_BITS_VARY 31 # include "exec/page-vary.h" 32 extern const TargetPageBits target_page; 33 # ifdef CONFIG_DEBUG_TCG 34 # define TARGET_PAGE_BITS ({ assert(target_page.decided); \ 35 target_page.bits; }) 36 # define TARGET_PAGE_MASK ({ assert(target_page.decided); \ 37 (TARGET_PAGE_TYPE)target_page.mask; }) 38 # else 39 # define TARGET_PAGE_BITS target_page.bits 40 # define TARGET_PAGE_MASK ((TARGET_PAGE_TYPE)target_page.mask) 41 # endif 42 # define TARGET_PAGE_SIZE (-(int)TARGET_PAGE_MASK) 43 #else 44 # define TARGET_PAGE_BITS_MIN TARGET_PAGE_BITS 45 # define TARGET_PAGE_SIZE (1 << TARGET_PAGE_BITS) 46 # define TARGET_PAGE_MASK ((TARGET_PAGE_TYPE)-1 << TARGET_PAGE_BITS) 47 #endif 48 49 #define TARGET_PAGE_ALIGN(addr) ROUND_UP((addr), TARGET_PAGE_SIZE) 50 51 static inline size_t qemu_target_page_size(void) 52 { 53 return TARGET_PAGE_SIZE; 54 } 55 56 static inline int qemu_target_page_mask(void) 57 { 58 return TARGET_PAGE_MASK; 59 } 60 61 static inline int qemu_target_page_bits(void) 62 { 63 return TARGET_PAGE_BITS; 64 } 65 66 int qemu_target_page_bits_min(void); 67 size_t qemu_target_pages_to_MiB(size_t pages); 68 69 #endif 70