unicorn/include/uc_priv.h
cojocar 428cb83060 Support for MCLASS ARM cpu (Cortex-M3) (#700)
Support for Cortex-M ARM CPU already exists in Qemu. This patch just
exposes a "cortex-m3" CPU.

"uc_open(UC_ARCH_ARM, UC_MODE_THUMB | UC_MODE_MCLASS, &uc);"
Instantiates a CPU with this feature on.

Signed-off-by: Lucian Cojocar <lucian@cojocar.com>
2016-12-27 22:49:06 +08:00

259 lines
9.2 KiB
C

/* Unicorn Emulator Engine */
/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2015 */
#ifndef UC_PRIV_H
#define UC_PRIV_H
#include <stdint.h>
#include <stdio.h>
#include "qemu.h"
#include "unicorn/unicorn.h"
#include "list.h"
// These are masks of supported modes for each cpu/arch.
// They should be updated when changes are made to the uc_mode enum typedef.
#define UC_MODE_ARM_MASK (UC_MODE_ARM|UC_MODE_THUMB|UC_MODE_LITTLE_ENDIAN|UC_MODE_MCLASS)
#define UC_MODE_MIPS_MASK (UC_MODE_MIPS32|UC_MODE_MIPS64|UC_MODE_LITTLE_ENDIAN|UC_MODE_BIG_ENDIAN)
#define UC_MODE_X86_MASK (UC_MODE_16|UC_MODE_32|UC_MODE_64|UC_MODE_LITTLE_ENDIAN)
#define UC_MODE_PPC_MASK (UC_MODE_PPC64|UC_MODE_BIG_ENDIAN)
#define UC_MODE_SPARC_MASK (UC_MODE_SPARC32|UC_MODE_SPARC64|UC_MODE_BIG_ENDIAN)
#define UC_MODE_M68K_MASK (UC_MODE_BIG_ENDIAN)
#define ARR_SIZE(a) (sizeof(a)/sizeof(a[0]))
#define READ_QWORD(x) ((uint64)x)
#define READ_DWORD(x) (x & 0xffffffff)
#define READ_WORD(x) (x & 0xffff)
#define READ_BYTE_H(x) ((x & 0xffff) >> 8)
#define READ_BYTE_L(x) (x & 0xff)
#define WRITE_DWORD(x, w) (x = (x & ~0xffffffff) | (w & 0xffffffff))
#define WRITE_WORD(x, w) (x = (x & ~0xffff) | (w & 0xffff))
#define WRITE_BYTE_H(x, b) (x = (x & ~0xff00) | ((b & 0xff) << 8))
#define WRITE_BYTE_L(x, b) (x = (x & ~0xff) | (b & 0xff))
typedef struct ModuleEntry {
void (*init)(void);
QTAILQ_ENTRY(ModuleEntry) node;
module_init_type type;
} ModuleEntry;
typedef QTAILQ_HEAD(, ModuleEntry) ModuleTypeList;
typedef uc_err (*query_t)(struct uc_struct *uc, uc_query_type type, size_t *result);
// return 0 on success, -1 on failure
typedef int (*reg_read_t)(struct uc_struct *uc, unsigned int *regs, void **vals, int count);
typedef int (*reg_write_t)(struct uc_struct *uc, unsigned int *regs, void *const *vals, int count);
typedef void (*reg_reset_t)(struct uc_struct *uc);
typedef bool (*uc_write_mem_t)(AddressSpace *as, hwaddr addr, const uint8_t *buf, int len);
typedef bool (*uc_read_mem_t)(AddressSpace *as, hwaddr addr, uint8_t *buf, int len);
typedef void (*uc_args_void_t)(void*);
typedef void (*uc_args_uc_t)(struct uc_struct*);
typedef int (*uc_args_int_uc_t)(struct uc_struct*);
typedef bool (*uc_args_tcg_enable_t)(struct uc_struct*);
typedef void (*uc_minit_t)(struct uc_struct*, ram_addr_t);
typedef void (*uc_args_uc_long_t)(struct uc_struct*, unsigned long);
typedef void (*uc_args_uc_u64_t)(struct uc_struct *, uint64_t addr);
typedef MemoryRegion* (*uc_args_uc_ram_size_t)(struct uc_struct*, hwaddr begin, size_t size, uint32_t perms);
typedef MemoryRegion* (*uc_args_uc_ram_size_ptr_t)(struct uc_struct*, hwaddr begin, size_t size, uint32_t perms, void *ptr);
typedef void (*uc_mem_unmap_t)(struct uc_struct*, MemoryRegion *mr);
typedef void (*uc_readonly_mem_t)(MemoryRegion *mr, bool readonly);
// which interrupt should make emulation stop?
typedef bool (*uc_args_int_t)(int intno);
// some architecture redirect virtual memory to physical memory like Mips
typedef uint64_t (*uc_mem_redirect_t)(uint64_t address);
struct hook {
int type; // UC_HOOK_*
int insn; // instruction for HOOK_INSN
int refs; // reference count to free hook stored in multiple lists
uint64_t begin, end; // only trigger if PC or memory access is in this address (depends on hook type)
void *callback; // a uc_cb_* type
void *user_data;
};
// hook list offsets
// mirrors the order of uc_hook_type from include/unicorn/unicorn.h
enum uc_hook_idx {
UC_HOOK_INTR_IDX,
UC_HOOK_INSN_IDX,
UC_HOOK_CODE_IDX,
UC_HOOK_BLOCK_IDX,
UC_HOOK_MEM_READ_UNMAPPED_IDX,
UC_HOOK_MEM_WRITE_UNMAPPED_IDX,
UC_HOOK_MEM_FETCH_UNMAPPED_IDX,
UC_HOOK_MEM_READ_PROT_IDX,
UC_HOOK_MEM_WRITE_PROT_IDX,
UC_HOOK_MEM_FETCH_PROT_IDX,
UC_HOOK_MEM_READ_IDX,
UC_HOOK_MEM_WRITE_IDX,
UC_HOOK_MEM_FETCH_IDX,
UC_HOOK_MEM_READ_AFTER_IDX,
UC_HOOK_MAX,
};
// for loop macro to loop over hook lists
#define HOOK_FOREACH(uc, hh, idx) \
struct list_item *cur; \
for ( \
cur = (uc)->hook[idx##_IDX].head; \
cur != NULL && ((hh) = (struct hook *)cur->data) \
/* stop excuting callbacks on stop request */ \
&& !uc->stop_request; \
cur = cur->next)
// if statement to check hook bounds
#define HOOK_BOUND_CHECK(hh, addr) \
((((addr) >= (hh)->begin && (addr) <= (hh)->end) \
|| (hh)->begin > (hh)->end))
#define HOOK_EXISTS(uc, idx) ((uc)->hook[idx##_IDX].head != NULL)
#define HOOK_EXISTS_BOUNDED(uc, idx, addr) _hook_exists_bounded((uc)->hook[idx##_IDX].head, addr)
static inline bool _hook_exists_bounded(struct list_item *cur, uint64_t addr)
{
while (cur != NULL) {
if (HOOK_BOUND_CHECK((struct hook *)cur->data, addr))
return true;
cur = cur->next;
}
return false;
}
//relloc increment, KEEP THIS A POWER OF 2!
#define MEM_BLOCK_INCR 32
struct uc_struct {
uc_arch arch;
uc_mode mode;
QemuMutex qemu_global_mutex; // qemu/cpus.c
QemuCond qemu_cpu_cond; // qemu/cpus.c
QemuCond *tcg_halt_cond; // qemu/cpus.c
uc_err errnum; // qemu/cpu-exec.c
AddressSpace as;
query_t query;
reg_read_t reg_read;
reg_write_t reg_write;
reg_reset_t reg_reset;
uc_write_mem_t write_mem;
uc_read_mem_t read_mem;
uc_args_void_t release; // release resource when uc_close()
uc_args_uc_u64_t set_pc; // set PC for tracecode
uc_args_int_t stop_interrupt; // check if the interrupt should stop emulation
uc_args_uc_t init_arch, cpu_exec_init_all;
uc_args_int_uc_t vm_start;
uc_args_tcg_enable_t tcg_enabled;
uc_args_uc_long_t tcg_exec_init;
uc_args_uc_ram_size_t memory_map;
uc_args_uc_ram_size_ptr_t memory_map_ptr;
uc_mem_unmap_t memory_unmap;
uc_readonly_mem_t readonly_mem;
uc_mem_redirect_t mem_redirect;
// TODO: remove current_cpu, as it's a flag for something else ("cpu running"?)
CPUState *cpu, *current_cpu;
MemoryRegion *system_memory; // qemu/exec.c
MemoryRegion io_mem_rom; // qemu/exec.c
MemoryRegion io_mem_notdirty; // qemu/exec.c
MemoryRegion io_mem_unassigned; // qemu/exec.c
MemoryRegion io_mem_watch; // qemu/exec.c
RAMList ram_list; // qemu/exec.c
BounceBuffer bounce; // qemu/cpu-exec.c
volatile sig_atomic_t exit_request; // qemu/cpu-exec.c
spinlock_t x86_global_cpu_lock; // for X86 arch only
bool global_dirty_log; // qemu/memory.c
/* This is a multi-level map on the virtual address space.
The bottom level has pointers to PageDesc. */
void **l1_map; // qemu/translate-all.c
size_t l1_map_size;
/* code generation context */
void *tcg_ctx; // for "TCGContext tcg_ctx" in qemu/translate-all.c
/* memory.c */
unsigned memory_region_transaction_depth;
bool memory_region_update_pending;
bool ioeventfd_update_pending;
QemuMutex flat_view_mutex;
QTAILQ_HEAD(memory_listeners, MemoryListener) memory_listeners;
QTAILQ_HEAD(, AddressSpace) address_spaces;
MachineState *machine_state;
// qom/object.c
GHashTable *type_table;
Type type_interface;
Object *root;
Object *owner;
bool enumerating_types;
// util/module.c
ModuleTypeList init_type_list[MODULE_INIT_MAX];
// hw/intc/apic_common.c
DeviceState *vapic;
int apic_no;
bool mmio_registered;
bool apic_report_tpr_access;
// linked lists containing hooks per type
struct list hook[UC_HOOK_MAX];
// hook to count number of instructions for uc_emu_start()
uc_hook count_hook;
size_t emu_counter; // current counter of uc_emu_start()
size_t emu_count; // save counter of uc_emu_start()
uint64_t block_addr; // save the last block address we hooked
bool init_tcg; // already initialized local TCGv variables?
bool stop_request; // request to immediately stop emulation - for uc_emu_stop()
bool quit_request; // request to quit the current TB, but continue to emulate - for uc_mem_protect()
bool emulation_done; // emulation is done by uc_emu_start()
QemuThread timer; // timer for emulation timeout
uint64_t timeout; // timeout for uc_emu_start()
uint64_t invalid_addr; // invalid address to be accessed
int invalid_error; // invalid memory code: 1 = READ, 2 = WRITE, 3 = CODE
uint64_t addr_end; // address where emulation stops (@end param of uc_emu_start())
int thumb; // thumb mode for ARM
// full TCG cache leads to middle-block break in the last translation?
bool block_full;
int size_arg; // what tcg arg slot do we need to update with the size of the block?
MemoryRegion **mapped_blocks;
uint32_t mapped_block_count;
uint32_t mapped_block_cache_index;
void *qemu_thread_data; // to support cross compile to Windows (qemu-thread-win32.c)
uint32_t target_page_size;
uint32_t target_page_align;
uint64_t next_pc; // save next PC for some special cases
};
// Metadata stub for the variable-size cpu context used with uc_context_*()
struct uc_context {
size_t size;
char data[0];
};
// check if this address is mapped in (via uc_mem_map())
MemoryRegion *memory_mapping(struct uc_struct* uc, uint64_t address);
#endif