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1 | 84778508 | blueswir1 | #ifndef QEMU_H
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2 | 84778508 | blueswir1 | #define QEMU_H
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3 | 84778508 | blueswir1 | |
4 | 84778508 | blueswir1 | #include <signal.h> |
5 | 84778508 | blueswir1 | #include <string.h> |
6 | 84778508 | blueswir1 | |
7 | 84778508 | blueswir1 | #include "cpu.h" |
8 | 84778508 | blueswir1 | |
9 | 84778508 | blueswir1 | #undef DEBUG_REMAP
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10 | 84778508 | blueswir1 | #ifdef DEBUG_REMAP
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11 | 84778508 | blueswir1 | #include <stdlib.h> |
12 | 84778508 | blueswir1 | #endif /* DEBUG_REMAP */ |
13 | 84778508 | blueswir1 | |
14 | 1609cd44 | aurel32 | #include "qemu-types.h" |
15 | 84778508 | blueswir1 | |
16 | 84778508 | blueswir1 | enum BSDType {
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17 | 84778508 | blueswir1 | target_freebsd, |
18 | 84778508 | blueswir1 | target_netbsd, |
19 | 84778508 | blueswir1 | target_openbsd, |
20 | 84778508 | blueswir1 | }; |
21 | 78cfb07f | Juergen Lock | extern enum BSDType bsd_type; |
22 | 84778508 | blueswir1 | |
23 | 84778508 | blueswir1 | #include "syscall_defs.h" |
24 | 84778508 | blueswir1 | #include "syscall.h" |
25 | 84778508 | blueswir1 | #include "target_signal.h" |
26 | 84778508 | blueswir1 | #include "gdbstub.h" |
27 | 84778508 | blueswir1 | |
28 | 2f7bb878 | Juan Quintela | #if defined(CONFIG_USE_NPTL)
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29 | 84778508 | blueswir1 | #define THREAD __thread
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30 | 84778508 | blueswir1 | #else
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31 | 84778508 | blueswir1 | #define THREAD
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32 | 84778508 | blueswir1 | #endif
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33 | 84778508 | blueswir1 | |
34 | 84778508 | blueswir1 | /* This struct is used to hold certain information about the image.
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35 | 84778508 | blueswir1 | * Basically, it replicates in user space what would be certain
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36 | 84778508 | blueswir1 | * task_struct fields in the kernel
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37 | 84778508 | blueswir1 | */
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38 | 84778508 | blueswir1 | struct image_info {
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39 | 84778508 | blueswir1 | abi_ulong load_addr; |
40 | 84778508 | blueswir1 | abi_ulong start_code; |
41 | 84778508 | blueswir1 | abi_ulong end_code; |
42 | 84778508 | blueswir1 | abi_ulong start_data; |
43 | 84778508 | blueswir1 | abi_ulong end_data; |
44 | 84778508 | blueswir1 | abi_ulong start_brk; |
45 | 84778508 | blueswir1 | abi_ulong brk; |
46 | 84778508 | blueswir1 | abi_ulong start_mmap; |
47 | 84778508 | blueswir1 | abi_ulong mmap; |
48 | 84778508 | blueswir1 | abi_ulong rss; |
49 | 84778508 | blueswir1 | abi_ulong start_stack; |
50 | 84778508 | blueswir1 | abi_ulong entry; |
51 | 84778508 | blueswir1 | abi_ulong code_offset; |
52 | 84778508 | blueswir1 | abi_ulong data_offset; |
53 | 84778508 | blueswir1 | int personality;
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54 | 84778508 | blueswir1 | }; |
55 | 84778508 | blueswir1 | |
56 | 84778508 | blueswir1 | #define MAX_SIGQUEUE_SIZE 1024 |
57 | 84778508 | blueswir1 | |
58 | 84778508 | blueswir1 | struct sigqueue {
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59 | 84778508 | blueswir1 | struct sigqueue *next;
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60 | 84778508 | blueswir1 | //target_siginfo_t info;
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61 | 84778508 | blueswir1 | }; |
62 | 84778508 | blueswir1 | |
63 | 84778508 | blueswir1 | struct emulated_sigtable {
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64 | 84778508 | blueswir1 | int pending; /* true if signal is pending */ |
65 | 84778508 | blueswir1 | struct sigqueue *first;
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66 | 84778508 | blueswir1 | struct sigqueue info; /* in order to always have memory for the |
67 | 84778508 | blueswir1 | first signal, we put it here */
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68 | 84778508 | blueswir1 | }; |
69 | 84778508 | blueswir1 | |
70 | 84778508 | blueswir1 | /* NOTE: we force a big alignment so that the stack stored after is
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71 | 84778508 | blueswir1 | aligned too */
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72 | 84778508 | blueswir1 | typedef struct TaskState { |
73 | 84778508 | blueswir1 | struct TaskState *next;
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74 | 84778508 | blueswir1 | int used; /* non zero if used */ |
75 | 84778508 | blueswir1 | struct image_info *info;
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76 | 84778508 | blueswir1 | |
77 | 84778508 | blueswir1 | struct emulated_sigtable sigtab[TARGET_NSIG];
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78 | 84778508 | blueswir1 | struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */ |
79 | 84778508 | blueswir1 | struct sigqueue *first_free; /* first free siginfo queue entry */ |
80 | 84778508 | blueswir1 | int signal_pending; /* non zero if a signal may be pending */ |
81 | 84778508 | blueswir1 | |
82 | 84778508 | blueswir1 | uint8_t stack[0];
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83 | 84778508 | blueswir1 | } __attribute__((aligned(16))) TaskState;
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84 | 84778508 | blueswir1 | |
85 | 84778508 | blueswir1 | void init_task_state(TaskState *ts);
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86 | 84778508 | blueswir1 | extern const char *qemu_uname_release; |
87 | 2fa5d9ba | Blue Swirl | #if defined(CONFIG_USE_GUEST_BASE)
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88 | 2fa5d9ba | Blue Swirl | extern unsigned long mmap_min_addr; |
89 | 2fa5d9ba | Blue Swirl | #endif
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90 | 84778508 | blueswir1 | |
91 | 84778508 | blueswir1 | /* ??? See if we can avoid exposing so much of the loader internals. */
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92 | 84778508 | blueswir1 | /*
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93 | 84778508 | blueswir1 | * MAX_ARG_PAGES defines the number of pages allocated for arguments
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94 | 84778508 | blueswir1 | * and envelope for the new program. 32 should suffice, this gives
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95 | 84778508 | blueswir1 | * a maximum env+arg of 128kB w/4KB pages!
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96 | 84778508 | blueswir1 | */
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97 | 84778508 | blueswir1 | #define MAX_ARG_PAGES 32 |
98 | 84778508 | blueswir1 | |
99 | 84778508 | blueswir1 | /*
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100 | 84778508 | blueswir1 | * This structure is used to hold the arguments that are
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101 | 84778508 | blueswir1 | * used when loading binaries.
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102 | 84778508 | blueswir1 | */
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103 | 84778508 | blueswir1 | struct linux_binprm {
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104 | 84778508 | blueswir1 | char buf[128]; |
105 | 84778508 | blueswir1 | void *page[MAX_ARG_PAGES];
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106 | 84778508 | blueswir1 | abi_ulong p; |
107 | 84778508 | blueswir1 | int fd;
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108 | 84778508 | blueswir1 | int e_uid, e_gid;
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109 | 84778508 | blueswir1 | int argc, envc;
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110 | 84778508 | blueswir1 | char **argv;
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111 | 84778508 | blueswir1 | char **envp;
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112 | 84778508 | blueswir1 | char * filename; /* Name of binary */ |
113 | 84778508 | blueswir1 | }; |
114 | 84778508 | blueswir1 | |
115 | 84778508 | blueswir1 | void do_init_thread(struct target_pt_regs *regs, struct image_info *infop); |
116 | 84778508 | blueswir1 | abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp, |
117 | 84778508 | blueswir1 | abi_ulong stringp, int push_ptr);
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118 | 84778508 | blueswir1 | int loader_exec(const char * filename, char ** argv, char ** envp, |
119 | 84778508 | blueswir1 | struct target_pt_regs * regs, struct image_info *infop); |
120 | 84778508 | blueswir1 | |
121 | 84778508 | blueswir1 | int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, |
122 | 84778508 | blueswir1 | struct image_info * info);
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123 | 84778508 | blueswir1 | int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, |
124 | 84778508 | blueswir1 | struct image_info * info);
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125 | 84778508 | blueswir1 | |
126 | 84778508 | blueswir1 | abi_long memcpy_to_target(abi_ulong dest, const void *src, |
127 | 84778508 | blueswir1 | unsigned long len); |
128 | 84778508 | blueswir1 | void target_set_brk(abi_ulong new_brk);
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129 | 84778508 | blueswir1 | abi_long do_brk(abi_ulong new_brk); |
130 | 84778508 | blueswir1 | void syscall_init(void); |
131 | 84778508 | blueswir1 | abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1, |
132 | 84778508 | blueswir1 | abi_long arg2, abi_long arg3, abi_long arg4, |
133 | 78cfb07f | Juergen Lock | abi_long arg5, abi_long arg6, abi_long arg7, |
134 | 78cfb07f | Juergen Lock | abi_long arg8); |
135 | 84778508 | blueswir1 | abi_long do_netbsd_syscall(void *cpu_env, int num, abi_long arg1, |
136 | 84778508 | blueswir1 | abi_long arg2, abi_long arg3, abi_long arg4, |
137 | 84778508 | blueswir1 | abi_long arg5, abi_long arg6); |
138 | 84778508 | blueswir1 | abi_long do_openbsd_syscall(void *cpu_env, int num, abi_long arg1, |
139 | 84778508 | blueswir1 | abi_long arg2, abi_long arg3, abi_long arg4, |
140 | 84778508 | blueswir1 | abi_long arg5, abi_long arg6); |
141 | e5924d89 | Stefan Weil | void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2); |
142 | 84778508 | blueswir1 | extern THREAD CPUState *thread_env;
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143 | 78cfb07f | Juergen Lock | void cpu_loop(CPUState *env);
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144 | 84778508 | blueswir1 | char *target_strerror(int err); |
145 | 84778508 | blueswir1 | int get_osversion(void); |
146 | 84778508 | blueswir1 | void fork_start(void); |
147 | 84778508 | blueswir1 | void fork_end(int child); |
148 | 84778508 | blueswir1 | |
149 | 84778508 | blueswir1 | #include "qemu-log.h" |
150 | 84778508 | blueswir1 | |
151 | 84778508 | blueswir1 | /* strace.c */
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152 | 84778508 | blueswir1 | void
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153 | 84778508 | blueswir1 | print_freebsd_syscall(int num,
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154 | 84778508 | blueswir1 | abi_long arg1, abi_long arg2, abi_long arg3, |
155 | 84778508 | blueswir1 | abi_long arg4, abi_long arg5, abi_long arg6); |
156 | 84778508 | blueswir1 | void print_freebsd_syscall_ret(int num, abi_long ret); |
157 | 84778508 | blueswir1 | void
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158 | 84778508 | blueswir1 | print_netbsd_syscall(int num,
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159 | 84778508 | blueswir1 | abi_long arg1, abi_long arg2, abi_long arg3, |
160 | 84778508 | blueswir1 | abi_long arg4, abi_long arg5, abi_long arg6); |
161 | 84778508 | blueswir1 | void print_netbsd_syscall_ret(int num, abi_long ret); |
162 | 84778508 | blueswir1 | void
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163 | 84778508 | blueswir1 | print_openbsd_syscall(int num,
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164 | 84778508 | blueswir1 | abi_long arg1, abi_long arg2, abi_long arg3, |
165 | 84778508 | blueswir1 | abi_long arg4, abi_long arg5, abi_long arg6); |
166 | 84778508 | blueswir1 | void print_openbsd_syscall_ret(int num, abi_long ret); |
167 | 84778508 | blueswir1 | extern int do_strace; |
168 | 84778508 | blueswir1 | |
169 | 84778508 | blueswir1 | /* signal.c */
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170 | 84778508 | blueswir1 | void process_pending_signals(CPUState *cpu_env);
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171 | 84778508 | blueswir1 | void signal_init(void); |
172 | 84778508 | blueswir1 | //int queue_signal(CPUState *env, int sig, target_siginfo_t *info);
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173 | 84778508 | blueswir1 | //void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
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174 | 84778508 | blueswir1 | //void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
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175 | 84778508 | blueswir1 | long do_sigreturn(CPUState *env);
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176 | 84778508 | blueswir1 | long do_rt_sigreturn(CPUState *env);
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177 | 84778508 | blueswir1 | abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp); |
178 | 84778508 | blueswir1 | |
179 | 84778508 | blueswir1 | /* mmap.c */
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180 | 84778508 | blueswir1 | int target_mprotect(abi_ulong start, abi_ulong len, int prot); |
181 | 84778508 | blueswir1 | abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
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182 | 84778508 | blueswir1 | int flags, int fd, abi_ulong offset); |
183 | 84778508 | blueswir1 | int target_munmap(abi_ulong start, abi_ulong len);
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184 | 84778508 | blueswir1 | abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, |
185 | 84778508 | blueswir1 | abi_ulong new_size, unsigned long flags, |
186 | 84778508 | blueswir1 | abi_ulong new_addr); |
187 | 84778508 | blueswir1 | int target_msync(abi_ulong start, abi_ulong len, int flags); |
188 | 84778508 | blueswir1 | extern unsigned long last_brk; |
189 | 84778508 | blueswir1 | void mmap_lock(void); |
190 | 84778508 | blueswir1 | void mmap_unlock(void); |
191 | 9399f095 | blueswir1 | void cpu_list_lock(void); |
192 | 9399f095 | blueswir1 | void cpu_list_unlock(void); |
193 | 2f7bb878 | Juan Quintela | #if defined(CONFIG_USE_NPTL)
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194 | 84778508 | blueswir1 | void mmap_fork_start(void); |
195 | 84778508 | blueswir1 | void mmap_fork_end(int child); |
196 | 84778508 | blueswir1 | #endif
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197 | 84778508 | blueswir1 | |
198 | 28e738dc | Blue Swirl | /* main.c */
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199 | 28e738dc | Blue Swirl | extern unsigned long x86_stack_size; |
200 | 28e738dc | Blue Swirl | |
201 | 84778508 | blueswir1 | /* user access */
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202 | 84778508 | blueswir1 | |
203 | 84778508 | blueswir1 | #define VERIFY_READ 0 |
204 | 84778508 | blueswir1 | #define VERIFY_WRITE 1 /* implies read access */ |
205 | 84778508 | blueswir1 | |
206 | 84778508 | blueswir1 | static inline int access_ok(int type, abi_ulong addr, abi_ulong size) |
207 | 84778508 | blueswir1 | { |
208 | 84778508 | blueswir1 | return page_check_range((target_ulong)addr, size,
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209 | 84778508 | blueswir1 | (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
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210 | 84778508 | blueswir1 | } |
211 | 84778508 | blueswir1 | |
212 | 84778508 | blueswir1 | /* NOTE __get_user and __put_user use host pointers and don't check access. */
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213 | 84778508 | blueswir1 | /* These are usually used to access struct data members once the
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214 | 84778508 | blueswir1 | * struct has been locked - usually with lock_user_struct().
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215 | 84778508 | blueswir1 | */
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216 | 84778508 | blueswir1 | #define __put_user(x, hptr)\
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217 | 84778508 | blueswir1 | ({\ |
218 | 84778508 | blueswir1 | int size = sizeof(*hptr);\ |
219 | 84778508 | blueswir1 | switch(size) {\
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220 | 84778508 | blueswir1 | case 1:\ |
221 | 84778508 | blueswir1 | *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\ |
222 | 84778508 | blueswir1 | break;\
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223 | 84778508 | blueswir1 | case 2:\ |
224 | 84778508 | blueswir1 | *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\ |
225 | 84778508 | blueswir1 | break;\
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226 | 84778508 | blueswir1 | case 4:\ |
227 | 84778508 | blueswir1 | *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\ |
228 | 84778508 | blueswir1 | break;\
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229 | 84778508 | blueswir1 | case 8:\ |
230 | 84778508 | blueswir1 | *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\ |
231 | 84778508 | blueswir1 | break;\
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232 | 84778508 | blueswir1 | default:\
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233 | 84778508 | blueswir1 | abort();\ |
234 | 84778508 | blueswir1 | }\ |
235 | 84778508 | blueswir1 | 0;\
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236 | 84778508 | blueswir1 | }) |
237 | 84778508 | blueswir1 | |
238 | 84778508 | blueswir1 | #define __get_user(x, hptr) \
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239 | 84778508 | blueswir1 | ({\ |
240 | 84778508 | blueswir1 | int size = sizeof(*hptr);\ |
241 | 84778508 | blueswir1 | switch(size) {\
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242 | 84778508 | blueswir1 | case 1:\ |
243 | 84778508 | blueswir1 | x = (typeof(*hptr))*(uint8_t *)(hptr);\ |
244 | 84778508 | blueswir1 | break;\
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245 | 84778508 | blueswir1 | case 2:\ |
246 | 84778508 | blueswir1 | x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\ |
247 | 84778508 | blueswir1 | break;\
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248 | 84778508 | blueswir1 | case 4:\ |
249 | 84778508 | blueswir1 | x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\ |
250 | 84778508 | blueswir1 | break;\
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251 | 84778508 | blueswir1 | case 8:\ |
252 | 84778508 | blueswir1 | x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\ |
253 | 84778508 | blueswir1 | break;\
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254 | 84778508 | blueswir1 | default:\
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255 | 84778508 | blueswir1 | /* avoid warning */\
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256 | 84778508 | blueswir1 | x = 0;\
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257 | 84778508 | blueswir1 | abort();\ |
258 | 84778508 | blueswir1 | }\ |
259 | 84778508 | blueswir1 | 0;\
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260 | 84778508 | blueswir1 | }) |
261 | 84778508 | blueswir1 | |
262 | 84778508 | blueswir1 | /* put_user()/get_user() take a guest address and check access */
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263 | 84778508 | blueswir1 | /* These are usually used to access an atomic data type, such as an int,
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264 | 84778508 | blueswir1 | * that has been passed by address. These internally perform locking
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265 | 84778508 | blueswir1 | * and unlocking on the data type.
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266 | 84778508 | blueswir1 | */
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267 | 84778508 | blueswir1 | #define put_user(x, gaddr, target_type) \
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268 | 84778508 | blueswir1 | ({ \ |
269 | 84778508 | blueswir1 | abi_ulong __gaddr = (gaddr); \ |
270 | 84778508 | blueswir1 | target_type *__hptr; \ |
271 | 84778508 | blueswir1 | abi_long __ret; \ |
272 | 84778508 | blueswir1 | if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \ |
273 | 84778508 | blueswir1 | __ret = __put_user((x), __hptr); \ |
274 | 84778508 | blueswir1 | unlock_user(__hptr, __gaddr, sizeof(target_type)); \
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275 | 84778508 | blueswir1 | } else \
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276 | 84778508 | blueswir1 | __ret = -TARGET_EFAULT; \ |
277 | 84778508 | blueswir1 | __ret; \ |
278 | 84778508 | blueswir1 | }) |
279 | 84778508 | blueswir1 | |
280 | 84778508 | blueswir1 | #define get_user(x, gaddr, target_type) \
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281 | 84778508 | blueswir1 | ({ \ |
282 | 84778508 | blueswir1 | abi_ulong __gaddr = (gaddr); \ |
283 | 84778508 | blueswir1 | target_type *__hptr; \ |
284 | 84778508 | blueswir1 | abi_long __ret; \ |
285 | 84778508 | blueswir1 | if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \ |
286 | 84778508 | blueswir1 | __ret = __get_user((x), __hptr); \ |
287 | 84778508 | blueswir1 | unlock_user(__hptr, __gaddr, 0); \
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288 | 84778508 | blueswir1 | } else { \
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289 | 84778508 | blueswir1 | /* avoid warning */ \
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290 | 84778508 | blueswir1 | (x) = 0; \
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291 | 84778508 | blueswir1 | __ret = -TARGET_EFAULT; \ |
292 | 84778508 | blueswir1 | } \ |
293 | 84778508 | blueswir1 | __ret; \ |
294 | 84778508 | blueswir1 | }) |
295 | 84778508 | blueswir1 | |
296 | 84778508 | blueswir1 | #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
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297 | 84778508 | blueswir1 | #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
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298 | 84778508 | blueswir1 | #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
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299 | 84778508 | blueswir1 | #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
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300 | 84778508 | blueswir1 | #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
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301 | 84778508 | blueswir1 | #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
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302 | 84778508 | blueswir1 | #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
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303 | 84778508 | blueswir1 | #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
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304 | 84778508 | blueswir1 | #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
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305 | 84778508 | blueswir1 | #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
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306 | 84778508 | blueswir1 | |
307 | 84778508 | blueswir1 | #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
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308 | 84778508 | blueswir1 | #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
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309 | 84778508 | blueswir1 | #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
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310 | 84778508 | blueswir1 | #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
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311 | 84778508 | blueswir1 | #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
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312 | 84778508 | blueswir1 | #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
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313 | 84778508 | blueswir1 | #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
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314 | 84778508 | blueswir1 | #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
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315 | 84778508 | blueswir1 | #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
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316 | 84778508 | blueswir1 | #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
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317 | 84778508 | blueswir1 | |
318 | 84778508 | blueswir1 | /* copy_from_user() and copy_to_user() are usually used to copy data
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319 | 84778508 | blueswir1 | * buffers between the target and host. These internally perform
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320 | 84778508 | blueswir1 | * locking/unlocking of the memory.
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321 | 84778508 | blueswir1 | */
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322 | 84778508 | blueswir1 | abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
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323 | 84778508 | blueswir1 | abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
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324 | 84778508 | blueswir1 | |
325 | 84778508 | blueswir1 | /* Functions for accessing guest memory. The tget and tput functions
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326 | 84778508 | blueswir1 | read/write single values, byteswapping as neccessary. The lock_user
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327 | 84778508 | blueswir1 | gets a pointer to a contiguous area of guest memory, but does not perform
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328 | 84778508 | blueswir1 | and byteswapping. lock_user may return either a pointer to the guest
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329 | 84778508 | blueswir1 | memory, or a temporary buffer. */
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330 | 84778508 | blueswir1 | |
331 | 84778508 | blueswir1 | /* Lock an area of guest memory into the host. If copy is true then the
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332 | 84778508 | blueswir1 | host area will have the same contents as the guest. */
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333 | 84778508 | blueswir1 | static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy) |
334 | 84778508 | blueswir1 | { |
335 | 84778508 | blueswir1 | if (!access_ok(type, guest_addr, len))
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336 | 84778508 | blueswir1 | return NULL; |
337 | 84778508 | blueswir1 | #ifdef DEBUG_REMAP
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338 | 84778508 | blueswir1 | { |
339 | 84778508 | blueswir1 | void *addr;
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340 | 84778508 | blueswir1 | addr = malloc(len); |
341 | 84778508 | blueswir1 | if (copy)
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342 | 84778508 | blueswir1 | memcpy(addr, g2h(guest_addr), len); |
343 | 84778508 | blueswir1 | else
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344 | 84778508 | blueswir1 | memset(addr, 0, len);
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345 | 84778508 | blueswir1 | return addr;
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346 | 84778508 | blueswir1 | } |
347 | 84778508 | blueswir1 | #else
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348 | 84778508 | blueswir1 | return g2h(guest_addr);
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349 | 84778508 | blueswir1 | #endif
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350 | 84778508 | blueswir1 | } |
351 | 84778508 | blueswir1 | |
352 | 84778508 | blueswir1 | /* Unlock an area of guest memory. The first LEN bytes must be
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353 | 84778508 | blueswir1 | flushed back to guest memory. host_ptr = NULL is explicitly
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354 | 84778508 | blueswir1 | allowed and does nothing. */
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355 | 84778508 | blueswir1 | static inline void unlock_user(void *host_ptr, abi_ulong guest_addr, |
356 | 84778508 | blueswir1 | long len)
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357 | 84778508 | blueswir1 | { |
358 | 84778508 | blueswir1 | |
359 | 84778508 | blueswir1 | #ifdef DEBUG_REMAP
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360 | 84778508 | blueswir1 | if (!host_ptr)
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361 | 84778508 | blueswir1 | return;
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362 | 84778508 | blueswir1 | if (host_ptr == g2h(guest_addr))
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363 | 84778508 | blueswir1 | return;
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364 | 84778508 | blueswir1 | if (len > 0) |
365 | 84778508 | blueswir1 | memcpy(g2h(guest_addr), host_ptr, len); |
366 | 84778508 | blueswir1 | free(host_ptr); |
367 | 84778508 | blueswir1 | #endif
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368 | 84778508 | blueswir1 | } |
369 | 84778508 | blueswir1 | |
370 | 84778508 | blueswir1 | /* Return the length of a string in target memory or -TARGET_EFAULT if
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371 | 84778508 | blueswir1 | access error. */
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372 | 84778508 | blueswir1 | abi_long target_strlen(abi_ulong gaddr); |
373 | 84778508 | blueswir1 | |
374 | 84778508 | blueswir1 | /* Like lock_user but for null terminated strings. */
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375 | 84778508 | blueswir1 | static inline void *lock_user_string(abi_ulong guest_addr) |
376 | 84778508 | blueswir1 | { |
377 | 84778508 | blueswir1 | abi_long len; |
378 | 84778508 | blueswir1 | len = target_strlen(guest_addr); |
379 | 84778508 | blueswir1 | if (len < 0) |
380 | 84778508 | blueswir1 | return NULL; |
381 | 84778508 | blueswir1 | return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1); |
382 | 84778508 | blueswir1 | } |
383 | 84778508 | blueswir1 | |
384 | 84778508 | blueswir1 | /* Helper macros for locking/ulocking a target struct. */
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385 | 84778508 | blueswir1 | #define lock_user_struct(type, host_ptr, guest_addr, copy) \
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386 | 84778508 | blueswir1 | (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
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387 | 84778508 | blueswir1 | #define unlock_user_struct(host_ptr, guest_addr, copy) \
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388 | 84778508 | blueswir1 | unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0) |
389 | 84778508 | blueswir1 | |
390 | 2f7bb878 | Juan Quintela | #if defined(CONFIG_USE_NPTL)
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391 | 84778508 | blueswir1 | #include <pthread.h> |
392 | 84778508 | blueswir1 | #endif
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393 | 84778508 | blueswir1 | |
394 | 84778508 | blueswir1 | #endif /* QEMU_H */ |