/* * 86Box A hypervisor and IBM PC system emulator that specializes in * running old operating systems and software designed for IBM * PC systems and compatibles from 1981 through fairly recent * system designs based on the PCI bus. * * This file is part of the 86Box distribution. * * Definitions for the memory interface. * * Version: @(#)mem.h 1.0.10 2019/10/19 * * Authors: Sarah Walker, * Fred N. van Kempen, * Miran Grca, * * Copyright 2008-2019 Sarah Walker. * Copyright 2017-2019 Fred N. van Kempen. * Copyright 2016-2018 Miran Grca. */ #ifndef EMU_MEM_H # define EMU_MEM_H #define MEM_MAPPING_EXTERNAL 1 /* on external bus (ISA/PCI) */ #define MEM_MAPPING_INTERNAL 2 /* on internal bus (RAM) */ #define MEM_MAPPING_ROM 4 /* Executing from ROM may involve * additional wait states. */ #define MEM_MAPPING_ROMCS 8 /* respond to ROMCS* */ #define MEM_MAP_TO_SHADOW_RAM_MASK 1 #define MEM_MAP_TO_RAM_ADDR_MASK 2 #define MEM_READ_ANY 0x00 #define MEM_READ_INTERNAL 0x10 #define MEM_READ_EXTERNAL 0x20 #define MEM_READ_DISABLED 0x30 #define MEM_READ_ROMCS 0x60 /* EXTERNAL type + ROMC flag */ #define MEM_READ_EXTANY 0x70 /* Any EXTERNAL type */ #define MEM_READ_MASK 0xf0 #define MEM_WRITE_ANY 0x00 #define MEM_WRITE_INTERNAL 0x01 #define MEM_WRITE_EXTERNAL 0x02 #define MEM_WRITE_DISABLED 0x03 #define MEM_WRITE_ROMCS 0x06 /* EXTERNAL type + ROMC flag */ #define MEM_WRITE_EXTANY 0x07 /* Any EXTERNAL type */ #define MEM_WRITE_MASK 0x0f /* #define's for memory granularity, currently 16k, but may change in the future - 4k works, less does not because of internal 4k pages. */ #ifdef DEFAULT_GRANULARITY #define MEM_GRANULARITY_BITS 14 #define MEM_GRANULARITY_SIZE (1 << MEM_GRANULARITY_BITS) #define MEM_GRANULARITY_MASK (MEM_GRANULARITY_SIZE - 1) #define MEM_GRANULARITY_HMASK ((1 << (MEM_GRANULARITY_BITS - 1)) - 1) #define MEM_GRANULARITY_QMASK ((1 << (MEM_GRANULARITY_BITS - 2)) - 1) #define MEM_MAPPINGS_NO ((0x100000 >> MEM_GRANULARITY_BITS) << 12) #define MEM_GRANULARITY_PAGE (MEM_GRANULARITY_MASK & ~0xfff) #else #define MEM_GRANULARITY_BITS 12 #define MEM_GRANULARITY_SIZE (1 << MEM_GRANULARITY_BITS) #define MEM_GRANULARITY_MASK (MEM_GRANULARITY_SIZE - 1) #define MEM_GRANULARITY_HMASK ((1 << (MEM_GRANULARITY_BITS - 1)) - 1) #define MEM_GRANULARITY_QMASK ((1 << (MEM_GRANULARITY_BITS - 2)) - 1) #define MEM_MAPPINGS_NO ((0x100000 >> MEM_GRANULARITY_BITS) << 12) #define MEM_GRANULARITY_PAGE (MEM_GRANULARITY_MASK & ~0xfff) #endif typedef struct _mem_mapping_ { struct _mem_mapping_ *prev, *next; int enable; uint32_t base; uint32_t size; uint8_t (*read_b)(uint32_t addr, void *priv); uint16_t (*read_w)(uint32_t addr, void *priv); uint32_t (*read_l)(uint32_t addr, void *priv); void (*write_b)(uint32_t addr, uint8_t val, void *priv); void (*write_w)(uint32_t addr, uint16_t val, void *priv); void (*write_l)(uint32_t addr, uint32_t val, void *priv); uint8_t *exec; uint32_t flags; void *p; /* backpointer to mapping or device */ void *dev; /* backpointer to memory device */ } mem_mapping_t; #ifdef USE_NEW_DYNAREC extern uint64_t *byte_dirty_mask; extern uint64_t *byte_code_present_mask; #define PAGE_BYTE_MASK_SHIFT 6 #define PAGE_BYTE_MASK_OFFSET_MASK 63 #define PAGE_BYTE_MASK_MASK 63 #define EVICT_NOT_IN_LIST ((uint32_t)-1) typedef struct page_t { void (*write_b)(uint32_t addr, uint8_t val, struct page_t *p); void (*write_w)(uint32_t addr, uint16_t val, struct page_t *p); void (*write_l)(uint32_t addr, uint32_t val, struct page_t *p); uint8_t *mem; uint16_t block, block_2; /*Head of codeblock tree associated with this page*/ uint16_t head; uint64_t code_present_mask, dirty_mask; uint32_t evict_prev, evict_next; uint64_t *byte_dirty_mask; uint64_t *byte_code_present_mask; } page_t; extern uint32_t purgable_page_list_head; static inline int page_in_evict_list(page_t *p) { return (p->evict_prev != EVICT_NOT_IN_LIST); } void page_remove_from_evict_list(page_t *p); void page_add_to_evict_list(page_t *p); #else typedef struct _page_ { void (*write_b)(uint32_t addr, uint8_t val, struct _page_ *p); void (*write_w)(uint32_t addr, uint16_t val, struct _page_ *p); void (*write_l)(uint32_t addr, uint32_t val, struct _page_ *p); uint8_t *mem; uint64_t code_present_mask[4], dirty_mask[4]; struct codeblock_t *block[4], *block_2[4]; /*Head of codeblock tree associated with this page*/ struct codeblock_t *head; } page_t; #endif extern uint8_t *ram; extern uint32_t rammask; extern uint8_t *rom; extern uint32_t biosmask, biosaddr; extern int readlookup[256], readlookupp[256]; extern uintptr_t * readlookup2; extern int readlnext; extern int writelookup[256], writelookupp[256]; extern uintptr_t *writelookup2; extern int writelnext; extern uint32_t ram_mapped_addr[64]; mem_mapping_t base_mapping, ram_low_mapping, #if 1 ram_mid_mapping, #endif ram_remapped_mapping, ram_high_mapping, bios_mapping, bios_high_mapping; extern uint32_t mem_logical_addr; extern page_t *pages, **page_lookup; extern uint32_t get_phys_virt,get_phys_phys; extern int shadowbios, shadowbios_write; extern int readlnum, writelnum; extern int memspeed[11]; extern int mmu_perm; extern int mem_a20_state, mem_a20_alt, mem_a20_key; #ifndef USE_NEW_DYNAREC #define readmemb(a) ((readlookup2[(a)>>12]==-1)?readmembl(a):*(uint8_t *)(readlookup2[(a) >> 12] + (a))) #define readmemw(s,a) ((readlookup2[(uint32_t)((s)+(a))>>12]==-1 || (s)==0xFFFFFFFF || (((s)+(a)) & 1))?readmemwl(s,a):*(uint16_t *)(readlookup2[(uint32_t)((s)+(a))>>12]+(uint32_t)((s)+(a)))) #define readmeml(s,a) ((readlookup2[(uint32_t)((s)+(a))>>12]==-1 || (s)==0xFFFFFFFF || (((s)+(a)) & 3))?readmemll(s,a):*(uint32_t *)(readlookup2[(uint32_t)((s)+(a))>>12]+(uint32_t)((s)+(a)))) extern uint8_t readmembl(uint32_t addr); extern void writemembl(uint32_t addr, uint8_t val); extern uint8_t readmemb386l(uint32_t seg, uint32_t addr); extern void writememb386l(uint32_t seg, uint32_t addr, uint8_t val); extern uint16_t readmemwl(uint32_t seg, uint32_t addr); extern void writememwl(uint32_t seg, uint32_t addr, uint16_t val); extern uint32_t readmemll(uint32_t seg, uint32_t addr); extern void writememll(uint32_t seg, uint32_t addr, uint32_t val); extern uint64_t readmemql(uint32_t seg, uint32_t addr); extern void writememql(uint32_t seg, uint32_t addr, uint64_t val); #else uint8_t readmembl(uint32_t addr); void writemembl(uint32_t addr, uint8_t val); uint16_t readmemwl(uint32_t addr); void writememwl(uint32_t addr, uint16_t val); uint32_t readmemll(uint32_t addr); void writememll(uint32_t addr, uint32_t val); uint64_t readmemql(uint32_t addr); void writememql(uint32_t addr, uint64_t val); #endif extern uint8_t *getpccache(uint32_t a); extern uint32_t mmutranslatereal(uint32_t addr, int rw); extern void addreadlookup(uint32_t virt, uint32_t phys); extern void addwritelookup(uint32_t virt, uint32_t phys); extern void mem_mapping_del(mem_mapping_t *); extern void mem_mapping_add(mem_mapping_t *, uint32_t base, uint32_t size, uint8_t (*read_b)(uint32_t addr, void *p), uint16_t (*read_w)(uint32_t addr, void *p), uint32_t (*read_l)(uint32_t addr, void *p), void (*write_b)(uint32_t addr, uint8_t val, void *p), void (*write_w)(uint32_t addr, uint16_t val, void *p), void (*write_l)(uint32_t addr, uint32_t val, void *p), uint8_t *exec, uint32_t flags, void *p); extern void mem_mapping_set_handler(mem_mapping_t *, uint8_t (*read_b)(uint32_t addr, void *p), uint16_t (*read_w)(uint32_t addr, void *p), uint32_t (*read_l)(uint32_t addr, void *p), void (*write_b)(uint32_t addr, uint8_t val, void *p), void (*write_w)(uint32_t addr, uint16_t val, void *p), void (*write_l)(uint32_t addr, uint32_t val, void *p)); extern void mem_mapping_set_p(mem_mapping_t *, void *p); extern void mem_mapping_set_dev(mem_mapping_t *, void *dev); extern void mem_mapping_set_addr(mem_mapping_t *, uint32_t base, uint32_t size); extern void mem_mapping_set_exec(mem_mapping_t *, uint8_t *exec); extern void mem_mapping_disable(mem_mapping_t *); extern void mem_mapping_enable(mem_mapping_t *); extern void mem_set_mem_state(uint32_t base, uint32_t size, int state); extern uint8_t mem_readb_phys(uint32_t addr); extern uint16_t mem_readw_phys(uint32_t addr); extern uint32_t mem_readl_phys(uint32_t addr); extern void mem_writeb_phys(uint32_t addr, uint8_t val); extern void mem_writel_phys(uint32_t addr, uint32_t val); extern uint8_t mem_read_ram(uint32_t addr, void *priv); extern uint16_t mem_read_ramw(uint32_t addr, void *priv); extern uint32_t mem_read_raml(uint32_t addr, void *priv); extern void mem_write_ram(uint32_t addr, uint8_t val, void *priv); extern void mem_write_ramw(uint32_t addr, uint16_t val, void *priv); extern void mem_write_raml(uint32_t addr, uint32_t val, void *priv); extern uint8_t mem_read_bios(uint32_t addr, void *priv); extern uint16_t mem_read_biosw(uint32_t addr, void *priv); extern uint32_t mem_read_biosl(uint32_t addr, void *priv); extern void mem_write_null(uint32_t addr, uint8_t val, void *p); extern void mem_write_nullw(uint32_t addr, uint16_t val, void *p); extern void mem_write_nulll(uint32_t addr, uint32_t val, void *p); extern int mem_addr_is_ram(uint32_t addr); extern uint32_t mmutranslate_noabrt(uint32_t addr, int rw); extern void mem_invalidate_range(uint32_t start_addr, uint32_t end_addr); extern void mem_write_ramb_page(uint32_t addr, uint8_t val, page_t *p); extern void mem_write_ramw_page(uint32_t addr, uint16_t val, page_t *p); extern void mem_write_raml_page(uint32_t addr, uint32_t val, page_t *p); extern void mem_flush_write_page(uint32_t addr, uint32_t virt); extern void mem_reset_page_blocks(void); extern void flushmmucache(void); extern void flushmmucache_cr3(void); extern void flushmmucache_nopc(void); extern void mmu_invalidate(uint32_t addr); extern void mem_a20_recalc(void); extern void mem_add_upper_bios(void); extern void mem_add_bios(void); extern void mem_init(void); extern void mem_reset(void); extern void mem_remap_top(int kb); #ifdef EMU_CPU_H static __inline uint32_t get_phys(uint32_t addr) { if (!((addr ^ get_phys_virt) & ~0xfff)) return get_phys_phys | (addr & 0xfff); get_phys_virt = addr; if (!(cr0 >> 31)) { get_phys_phys = (addr & rammask) & ~0xfff; return addr & rammask; } if (((int) (readlookup2[addr >> 12])) != -1) get_phys_phys = ((uintptr_t)readlookup2[addr >> 12] + (addr & ~0xfff)) - (uintptr_t)ram; else { get_phys_phys = (mmutranslatereal(addr, 0) & rammask) & ~0xfff; if (!cpu_state.abrt && mem_addr_is_ram(get_phys_phys)) addreadlookup(get_phys_virt, get_phys_phys); } return get_phys_phys | (addr & 0xfff); } static __inline uint32_t get_phys_noabrt(uint32_t addr) { uint32_t phys_addr; if (!(cr0 >> 31)) return addr & rammask; if (((int) (readlookup2[addr >> 12])) != -1) return ((uintptr_t)readlookup2[addr >> 12] + addr) - (uintptr_t)ram; phys_addr = mmutranslate_noabrt(addr, 0) & rammask; if (phys_addr != 0xffffffff && mem_addr_is_ram(phys_addr)) addreadlookup(addr, phys_addr); return phys_addr; } #endif #endif /*EMU_MEM_H*/