globals.h

#ifndef GLOBALS_H
#define GLOBALS_H


#define DEBUG

// define to use bit flip simulation through /dev/mem
//#define SIMULATE

//#define FLUSH

//#define USE_HUGEPAGES
//#define USE_VFORK



extern int g_flip_offset;

// Which bit in the 64-bit PTE to flip.
extern const int g_test_bit_to_flip; // Bit 8 in the physical page number.

extern uintptr_t g_victim_phys_addr;
extern uint64_t *g_filler_mem;

extern int g_flip_offset;

extern int g_temp_file_fd;
extern size_t g_file_size;

extern int g_spraying_pagetables;

extern uint8_t *g_aggr[4];

extern uint64_t *g_shared_page;
extern int g_flush_step;

// we need three children, each one can create 1GB of page tables
extern int g_child_id;
extern const int g_child_count;
extern int g_child_pids[1];
extern int g_write_pipes[1][2];
extern int g_read_pipes[1][2];

extern void **g_file_mappings;

extern FILE *g_output_file;


int hammer_victim(int simulate, volatile uint8_t *aggr[4], uint8_t pattern, int try_pattern = 0);

int spray_page_tables(int iterations);

void flush_tlb(int iterations, int step = 1, bool safe = true);

void check_mappings(int iterations, uint64_t **page_table, void **virtual_target, char quiet);

uint64_t *find_access_address(uint64_t *page_table, int iterations);

void dump_memory(volatile uint64_t *access_address, uint64_t *page_table, int iterations, bool screen = true);

#endif //GLOBALS_H