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#ifndef QEMU_H
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#define QEMU_H
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#include <signal.h> |
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#include <string.h> |
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#include "cpu.h" |
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#ifdef TARGET_ABI32
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typedef uint32_t abi_ulong;
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typedef int32_t abi_long;
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#define TARGET_ABI_FMT_lx "%08x" |
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#define TARGET_ABI_FMT_ld "%d" |
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#define TARGET_ABI_FMT_lu "%u" |
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#define TARGET_ABI_BITS 32 |
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#else
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typedef target_ulong abi_ulong;
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typedef target_long abi_long;
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#define TARGET_ABI_FMT_lx TARGET_FMT_lx
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#define TARGET_ABI_FMT_ld TARGET_FMT_ld
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#define TARGET_ABI_FMT_lu TARGET_FMT_lu
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#define TARGET_ABI_BITS TARGET_LONG_BITS
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/* for consistency, define ABI32 too */
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#if TARGET_ABI_BITS == 32 |
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#define TARGET_ABI32 1 |
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#endif
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#endif
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#include "thunk.h" |
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#include "syscall_defs.h" |
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#include "syscall.h" |
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#include "target_signal.h" |
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#include "gdbstub.h" |
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/* This struct is used to hold certain information about the image.
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* Basically, it replicates in user space what would be certain
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* task_struct fields in the kernel
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*/
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struct image_info {
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abi_ulong load_addr; |
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abi_ulong start_code; |
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abi_ulong end_code; |
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abi_ulong start_data; |
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abi_ulong end_data; |
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abi_ulong start_brk; |
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abi_ulong brk; |
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abi_ulong start_mmap; |
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abi_ulong mmap; |
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abi_ulong rss; |
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abi_ulong start_stack; |
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abi_ulong entry; |
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abi_ulong code_offset; |
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abi_ulong data_offset; |
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char **host_argv;
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int personality;
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}; |
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#ifdef TARGET_I386
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/* Information about the current linux thread */
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struct vm86_saved_state {
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uint32_t eax; /* return code */
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uint32_t ebx; |
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uint32_t ecx; |
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uint32_t edx; |
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uint32_t esi; |
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uint32_t edi; |
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uint32_t ebp; |
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uint32_t esp; |
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uint32_t eflags; |
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uint32_t eip; |
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uint16_t cs, ss, ds, es, fs, gs; |
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}; |
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#endif
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#ifdef TARGET_ARM
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/* FPU emulator */
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#include "nwfpe/fpa11.h" |
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#endif
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/* NOTE: we force a big alignment so that the stack stored after is
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aligned too */
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typedef struct TaskState { |
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struct TaskState *next;
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#ifdef TARGET_ARM
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/* FPA state */
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FPA11 fpa; |
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int swi_errno;
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#endif
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#if defined(TARGET_I386) && !defined(TARGET_X86_64)
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abi_ulong target_v86; |
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struct vm86_saved_state vm86_saved_regs;
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struct target_vm86plus_struct vm86plus;
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uint32_t v86flags; |
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uint32_t v86mask; |
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#endif
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#ifdef TARGET_M68K
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int sim_syscalls;
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#endif
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#if defined(TARGET_ARM) || defined(TARGET_M68K)
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/* Extra fields for semihosted binaries. */
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uint32_t stack_base; |
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uint32_t heap_base; |
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uint32_t heap_limit; |
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#endif
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int used; /* non zero if used */ |
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struct image_info *info;
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uint8_t stack[0];
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} __attribute__((aligned(16))) TaskState;
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extern TaskState *first_task_state;
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extern const char *qemu_uname_release; |
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/* ??? See if we can avoid exposing so much of the loader internals. */
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/*
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* MAX_ARG_PAGES defines the number of pages allocated for arguments
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* and envelope for the new program. 32 should suffice, this gives
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* a maximum env+arg of 128kB w/4KB pages!
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*/
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#define MAX_ARG_PAGES 32 |
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/*
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* This structure is used to hold the arguments that are
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* used when loading binaries.
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*/
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struct linux_binprm {
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char buf[128]; |
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void *page[MAX_ARG_PAGES];
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abi_ulong p; |
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int fd;
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int e_uid, e_gid;
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int argc, envc;
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char **argv;
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char **envp;
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char * filename; /* Name of binary */ |
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}; |
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void do_init_thread(struct target_pt_regs *regs, struct image_info *infop); |
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abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp, |
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abi_ulong stringp, int push_ptr);
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int loader_exec(const char * filename, char ** argv, char ** envp, |
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struct target_pt_regs * regs, struct image_info *infop); |
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int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, |
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struct image_info * info);
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int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, |
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struct image_info * info);
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#ifdef TARGET_HAS_ELFLOAD32
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int load_elf_binary_multi(struct linux_binprm *bprm, |
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struct target_pt_regs *regs,
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struct image_info *info);
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#endif
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abi_long memcpy_to_target(abi_ulong dest, const void *src, |
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unsigned long len); |
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void target_set_brk(abi_ulong new_brk);
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abi_long do_brk(abi_ulong new_brk); |
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void syscall_init(void); |
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abi_long do_syscall(void *cpu_env, int num, abi_long arg1, |
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abi_long arg2, abi_long arg3, abi_long arg4, |
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abi_long arg5, abi_long arg6); |
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void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2))); |
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extern CPUState *global_env;
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void cpu_loop(CPUState *env);
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void init_paths(const char *prefix); |
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const char *path(const char *pathname); |
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char *target_strerror(int err); |
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extern int loglevel; |
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extern FILE *logfile;
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/* strace.c */
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void print_syscall(int num, |
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abi_long arg1, abi_long arg2, abi_long arg3, |
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abi_long arg4, abi_long arg5, abi_long arg6); |
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void print_syscall_ret(int num, abi_long arg1); |
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extern int do_strace; |
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/* signal.c */
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void process_pending_signals(void *cpu_env); |
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void signal_init(void); |
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int queue_signal(int sig, target_siginfo_t *info); |
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void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info); |
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void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo); |
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long do_sigreturn(CPUState *env);
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long do_rt_sigreturn(CPUState *env);
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abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp); |
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#ifdef TARGET_I386
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/* vm86.c */
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void save_v86_state(CPUX86State *env);
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void handle_vm86_trap(CPUX86State *env, int trapno); |
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void handle_vm86_fault(CPUX86State *env);
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int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr); |
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#elif defined(TARGET_SPARC64)
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void sparc64_set_context(CPUSPARCState *env);
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void sparc64_get_context(CPUSPARCState *env);
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#endif
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/* mmap.c */
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int target_mprotect(abi_ulong start, abi_ulong len, int prot); |
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abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
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int flags, int fd, abi_ulong offset); |
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int target_munmap(abi_ulong start, abi_ulong len);
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abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, |
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abi_ulong new_size, unsigned long flags, |
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abi_ulong new_addr); |
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int target_msync(abi_ulong start, abi_ulong len, int flags); |
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/* user access */
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#define VERIFY_READ 0 |
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#define VERIFY_WRITE 1 /* implies read access */ |
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static inline int access_ok(int type, abi_ulong addr, abi_ulong size) |
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{ |
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return page_check_range((target_ulong)addr, size,
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(type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
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} |
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/* NOTE __get_user and __put_user use host pointers and don't check access. */
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/* These are usually used to access struct data members once the
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* struct has been locked - usually with lock_user_struct().
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*/
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#define __put_user(x, hptr)\
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({\ |
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int size = sizeof(*hptr);\ |
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switch(size) {\
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case 1:\ |
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*(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\ |
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break;\
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case 2:\ |
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*(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\ |
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break;\
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case 4:\ |
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*(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\ |
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break;\
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case 8:\ |
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*(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\ |
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break;\
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default:\
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abort();\ |
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}\ |
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0;\
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}) |
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#define __get_user(x, hptr) \
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({\ |
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int size = sizeof(*hptr);\ |
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switch(size) {\
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case 1:\ |
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x = (typeof(*hptr))*(uint8_t *)(hptr);\ |
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break;\
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case 2:\ |
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x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\ |
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break;\
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case 4:\ |
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x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\ |
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break;\
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case 8:\ |
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x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\ |
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break;\
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default:\
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/* avoid warning */\
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x = 0;\
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abort();\ |
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}\ |
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0;\
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}) |
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/* put_user()/get_user() take a guest address and check access */
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/* These are usually used to access an atomic data type, such as an int,
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* that has been passed by address. These internally perform locking
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* and unlocking on the data type.
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*/
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#define put_user(x, gaddr, target_type) \
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({ \ |
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abi_ulong __gaddr = (gaddr); \ |
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target_type *__hptr; \ |
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abi_long __ret; \ |
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if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \ |
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__ret = __put_user((x), __hptr); \ |
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unlock_user(__hptr, __gaddr, sizeof(target_type)); \
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} else \
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__ret = -TARGET_EFAULT; \ |
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__ret; \ |
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}) |
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#define get_user(x, gaddr, target_type) \
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({ \ |
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abi_ulong __gaddr = (gaddr); \ |
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target_type *__hptr; \ |
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abi_long __ret; \ |
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if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \ |
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__ret = __get_user((x), __hptr); \ |
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unlock_user(__hptr, __gaddr, 0); \
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} else { \
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/* avoid warning */ \
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(x) = 0; \
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__ret = -TARGET_EFAULT; \ |
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} \ |
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__ret; \ |
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}) |
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#define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
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#define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
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#define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
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#define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
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#define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
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#define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
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#define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
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#define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
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#define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
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#define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
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#define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
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#define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
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#define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
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#define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
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#define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
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#define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
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#define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
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#define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
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#define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
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#define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
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/* copy_from_user() and copy_to_user() are usually used to copy data
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* buffers between the target and host. These internally perform
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* locking/unlocking of the memory.
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*/
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abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
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abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
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/* Functions for accessing guest memory. The tget and tput functions
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read/write single values, byteswapping as neccessary. The lock_user
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gets a pointer to a contiguous area of guest memory, but does not perform
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and byteswapping. lock_user may return either a pointer to the guest
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memory, or a temporary buffer. */
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/* Lock an area of guest memory into the host. If copy is true then the
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host area will have the same contents as the guest. */
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static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy) |
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{ |
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if (!access_ok(type, guest_addr, len))
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return NULL; |
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#ifdef DEBUG_REMAP
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{ |
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void *addr;
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addr = malloc(len); |
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if (copy)
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memcpy(addr, g2h(guest_addr), len); |
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else
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memset(addr, 0, len);
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return addr;
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} |
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#else
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return g2h(guest_addr);
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#endif
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} |
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/* Unlock an area of guest memory. The first LEN bytes must be
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flushed back to guest memory. host_ptr = NULL is explicitely
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allowed and does nothing. */
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static inline void unlock_user(void *host_ptr, abi_ulong guest_addr, |
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long len)
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{ |
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#ifdef DEBUG_REMAP
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if (!host_ptr)
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return;
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if (host_ptr == g2h(guest_addr))
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return;
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if (len > 0) |
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memcpy(g2h(guest_ptr), host_ptr, len); |
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free(host_ptr); |
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#endif
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} |
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/* Return the length of a string in target memory or -TARGET_EFAULT if
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access error. */
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abi_long target_strlen(abi_ulong gaddr); |
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/* Like lock_user but for null terminated strings. */
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static inline void *lock_user_string(abi_ulong guest_addr) |
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{ |
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abi_long len; |
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len = target_strlen(guest_addr); |
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if (len < 0) |
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return NULL; |
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return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1); |
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} |
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/* Helper macros for locking/ulocking a target struct. */
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#define lock_user_struct(type, host_ptr, guest_addr, copy) \
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(host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
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#define unlock_user_struct(host_ptr, guest_addr, copy) \
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unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0) |
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#endif /* QEMU_H */ |