diff options
Diffstat (limited to 'bsd-user/qemu.h')
| -rw-r--r-- | bsd-user/qemu.h | 131 |
1 files changed, 74 insertions, 57 deletions
diff --git a/bsd-user/qemu.h b/bsd-user/qemu.h index d2bcaab741..c02e8a5ca1 100644 --- a/bsd-user/qemu.h +++ b/bsd-user/qemu.h @@ -27,6 +27,8 @@ #include "exec/user/abitypes.h" +extern char **environ; + enum BSDType { target_freebsd, target_netbsd, @@ -36,7 +38,6 @@ extern enum BSDType bsd_type; #include "syscall_defs.h" #include "target_syscall.h" -#include "target_signal.h" #include "exec/gdbstub.h" #if defined(CONFIG_USE_NPTL) @@ -45,9 +46,10 @@ extern enum BSDType bsd_type; #define THREAD #endif -/* This struct is used to hold certain information about the image. - * Basically, it replicates in user space what would be certain - * task_struct fields in the kernel +/* + * This struct is used to hold certain information about the image. Basically, + * it replicates in user space what would be certain task_struct fields in the + * kernel */ struct image_info { abi_ulong load_addr; @@ -71,18 +73,18 @@ struct image_info { struct sigqueue { struct sigqueue *next; - //target_siginfo_t info; }; struct emulated_sigtable { int pending; /* true if signal is pending */ struct sigqueue *first; - struct sigqueue info; /* in order to always have memory for the - first signal, we put it here */ + /* in order to always have memory for the first signal, we put it here */ + struct sigqueue info; }; -/* NOTE: we force a big alignment so that the stack stored after is - aligned too */ +/* + * NOTE: we force a big alignment so that the stack stored after is aligned too + */ typedef struct TaskState { pid_t ts_tid; /* tid (or pid) of this task */ @@ -102,7 +104,6 @@ void init_task_state(TaskState *ts); extern const char *qemu_uname_release; extern unsigned long mmap_min_addr; -/* ??? See if we can avoid exposing so much of the loader internals. */ /* * MAX_ARG_PAGES defines the number of pages allocated for arguments * and envelope for the new program. 32 should suffice, this gives @@ -114,7 +115,7 @@ extern unsigned long mmap_min_addr; * This structure is used to hold the arguments that are * used when loading binaries. */ -struct linux_binprm { +struct bsd_binprm { char buf[128]; void *page[MAX_ARG_PAGES]; abi_ulong p; @@ -123,19 +124,19 @@ struct linux_binprm { int argc, envc; char **argv; char **envp; - char * filename; /* Name of binary */ + char *filename; /* Name of binary */ }; void do_init_thread(struct target_pt_regs *regs, struct image_info *infop); abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp, abi_ulong stringp, int push_ptr); -int loader_exec(const char * filename, char ** argv, char ** envp, - struct target_pt_regs * regs, struct image_info *infop); +int loader_exec(const char *filename, char **argv, char **envp, + struct target_pt_regs *regs, struct image_info *infop); -int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, - struct image_info * info); -int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, - struct image_info * info); +int load_elf_binary(struct bsd_binprm *bprm, struct target_pt_regs *regs, + struct image_info *info); +int load_flt_binary(struct bsd_binprm *bprm, struct target_pt_regs *regs, + struct image_info *info); abi_long memcpy_to_target(abi_ulong dest, const void *src, unsigned long len); @@ -193,9 +194,6 @@ extern int do_strace; /* signal.c */ void process_pending_signals(CPUArchState *cpu_env); void signal_init(void); -//int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info); -//void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info); -//void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo); long do_sigreturn(CPUArchState *env); long do_rt_sigreturn(CPUArchState *env); abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp); @@ -226,14 +224,16 @@ static inline bool access_ok(int type, abi_ulong addr, abi_ulong size) return page_check_range((target_ulong)addr, size, type) == 0; } -/* NOTE __get_user and __put_user use host pointers and don't check access. */ -/* These are usually used to access struct data members once the - * struct has been locked - usually with lock_user_struct(). +/* + * NOTE __get_user and __put_user use host pointers and don't check access. + * + * These are usually used to access struct data members once the struct has been + * locked - usually with lock_user_struct(). */ #define __put_user(x, hptr)\ ({\ int size = sizeof(*hptr);\ - switch(size) {\ + switch (size) {\ case 1:\ *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\ break;\ @@ -248,14 +248,14 @@ static inline bool access_ok(int type, abi_ulong addr, abi_ulong size) break;\ default:\ abort();\ - }\ + } \ 0;\ }) #define __get_user(x, hptr) \ ({\ int size = sizeof(*hptr);\ - switch(size) {\ + switch (size) {\ case 1:\ x = (typeof(*hptr))*(uint8_t *)(hptr);\ break;\ @@ -269,24 +269,26 @@ static inline bool access_ok(int type, abi_ulong addr, abi_ulong size) x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\ break;\ default:\ - /* avoid warning */\ x = 0;\ abort();\ - }\ + } \ 0;\ }) -/* put_user()/get_user() take a guest address and check access */ -/* These are usually used to access an atomic data type, such as an int, - * that has been passed by address. These internally perform locking - * and unlocking on the data type. +/* + * put_user()/get_user() take a guest address and check access + * + * These are usually used to access an atomic data type, such as an int, that + * has been passed by address. These internally perform locking and unlocking + * on the data type. */ #define put_user(x, gaddr, target_type) \ ({ \ abi_ulong __gaddr = (gaddr); \ target_type *__hptr; \ abi_long __ret; \ - if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \ + __hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0); \ + if (__hptr) { \ __ret = __put_user((x), __hptr); \ unlock_user(__hptr, __gaddr, sizeof(target_type)); \ } else \ @@ -299,11 +301,11 @@ static inline bool access_ok(int type, abi_ulong addr, abi_ulong size) abi_ulong __gaddr = (gaddr); \ target_type *__hptr; \ abi_long __ret; \ - if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \ + __hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1); \ + if (__hptr) { \ __ret = __get_user((x), __hptr); \ unlock_user(__hptr, __gaddr, 0); \ } else { \ - /* avoid warning */ \ (x) = 0; \ __ret = -TARGET_EFAULT; \ } \ @@ -332,33 +334,41 @@ static inline bool access_ok(int type, abi_ulong addr, abi_ulong size) #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t) #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t) -/* copy_from_user() and copy_to_user() are usually used to copy data +/* + * copy_from_user() and copy_to_user() are usually used to copy data * buffers between the target and host. These internally perform * locking/unlocking of the memory. */ abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len); abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len); -/* Functions for accessing guest memory. The tget and tput functions - read/write single values, byteswapping as necessary. The lock_user function - gets a pointer to a contiguous area of guest memory, but does not perform - any byteswapping. lock_user may return either a pointer to the guest - memory, or a temporary buffer. */ +/* + * Functions for accessing guest memory. The tget and tput functions + * read/write single values, byteswapping as necessary. The lock_user function + * gets a pointer to a contiguous area of guest memory, but does not perform + * any byteswapping. lock_user may return either a pointer to the guest + * memory, or a temporary buffer. + */ -/* Lock an area of guest memory into the host. If copy is true then the - host area will have the same contents as the guest. */ -static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy) +/* + * Lock an area of guest memory into the host. If copy is true then the + * host area will have the same contents as the guest. + */ +static inline void *lock_user(int type, abi_ulong guest_addr, long len, + int copy) { - if (!access_ok(type, guest_addr, len)) + if (!access_ok(type, guest_addr, len)) { return NULL; + } #ifdef DEBUG_REMAP { void *addr; addr = g_malloc(len); - if (copy) + if (copy) { memcpy(addr, g2h_untagged(guest_addr), len); - else + } else { memset(addr, 0, len); + } return addr; } #else @@ -366,26 +376,32 @@ static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy #endif } -/* Unlock an area of guest memory. The first LEN bytes must be - flushed back to guest memory. host_ptr = NULL is explicitly - allowed and does nothing. */ +/* + * Unlock an area of guest memory. The first LEN bytes must be flushed back to + * guest memory. host_ptr = NULL is explicitly allowed and does nothing. + */ static inline void unlock_user(void *host_ptr, abi_ulong guest_addr, long len) { #ifdef DEBUG_REMAP - if (!host_ptr) + if (!host_ptr) { return; - if (host_ptr == g2h_untagged(guest_addr)) + } + if (host_ptr == g2h_untagged(guest_addr)) { return; - if (len > 0) + } + if (len > 0) { memcpy(g2h_untagged(guest_addr), host_ptr, len); + } g_free(host_ptr); #endif } -/* Return the length of a string in target memory or -TARGET_EFAULT if - access error. */ +/* + * Return the length of a string in target memory or -TARGET_EFAULT if access + * error. + */ abi_long target_strlen(abi_ulong gaddr); /* Like lock_user but for null terminated strings. */ @@ -393,8 +409,9 @@ static inline void *lock_user_string(abi_ulong guest_addr) { abi_long len; len = target_strlen(guest_addr); - if (len < 0) + if (len < 0) { return NULL; + } return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1); } |