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Diffstat (limited to 'linux-user/user-internals.h')
-rw-r--r-- | linux-user/user-internals.h | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/linux-user/user-internals.h b/linux-user/user-internals.h new file mode 100644 index 0000000..1729a8b --- /dev/null +++ b/linux-user/user-internals.h @@ -0,0 +1,184 @@ +/* + * user-internals.h: prototypes etc internal to the linux-user implementation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef LINUX_USER_USER_INTERNALS_H +#define LINUX_USER_USER_INTERNALS_H + +#include "hostdep.h" +#include "exec/user/thunk.h" + +extern char *exec_path; +void init_task_state(TaskState *ts); +void task_settid(TaskState *); +void stop_all_tasks(void); +extern const char *qemu_uname_release; +extern unsigned long mmap_min_addr; + +typedef struct IOCTLEntry IOCTLEntry; + +typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp, + int fd, int cmd, abi_long arg); + +struct IOCTLEntry { + int target_cmd; + unsigned int host_cmd; + const char *name; + int access; + do_ioctl_fn *do_ioctl; + const argtype arg_type[5]; +}; + +extern IOCTLEntry ioctl_entries[]; + +#define IOC_R 0x0001 +#define IOC_W 0x0002 +#define IOC_RW (IOC_R | IOC_W) + +/* + * Returns true if the image uses the FDPIC ABI. If this is the case, + * we have to provide some information (loadmap, pt_dynamic_info) such + * that the program can be relocated adequately. This is also useful + * when handling signals. + */ +int info_is_fdpic(struct image_info *info); + +void target_set_brk(abi_ulong new_brk); +void syscall_init(void); +abi_long do_syscall(void *cpu_env, int num, abi_long arg1, + abi_long arg2, abi_long arg3, abi_long arg4, + abi_long arg5, abi_long arg6, abi_long arg7, + abi_long arg8); +extern __thread CPUState *thread_cpu; +void cpu_loop(CPUArchState *env); +const char *target_strerror(int err); +int get_osversion(void); +void init_qemu_uname_release(void); +void fork_start(void); +void fork_end(int child); + +/** + * probe_guest_base: + * @image_name: the executable being loaded + * @loaddr: the lowest fixed address in the executable + * @hiaddr: the highest fixed address in the executable + * + * Creates the initial guest address space in the host memory space. + * + * If @loaddr == 0, then no address in the executable is fixed, + * i.e. it is fully relocatable. In that case @hiaddr is the size + * of the executable. + * + * This function will not return if a valid value for guest_base + * cannot be chosen. On return, the executable loader can expect + * + * target_mmap(loaddr, hiaddr - loaddr, ...) + * + * to succeed. + */ +void probe_guest_base(const char *image_name, + abi_ulong loaddr, abi_ulong hiaddr); + +/* syscall.c */ +int host_to_target_waitstatus(int status); + +#ifdef TARGET_I386 +/* vm86.c */ +void save_v86_state(CPUX86State *env); +void handle_vm86_trap(CPUX86State *env, int trapno); +void handle_vm86_fault(CPUX86State *env); +int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr); +#elif defined(TARGET_SPARC64) +void sparc64_set_context(CPUSPARCState *env); +void sparc64_get_context(CPUSPARCState *env); +#endif + +static inline int is_error(abi_long ret) +{ + return (abi_ulong)ret >= (abi_ulong)(-4096); +} + +#if TARGET_ABI_BITS == 32 +static inline uint64_t target_offset64(uint32_t word0, uint32_t word1) +{ +#ifdef TARGET_WORDS_BIGENDIAN + return ((uint64_t)word0 << 32) | word1; +#else + return ((uint64_t)word1 << 32) | word0; +#endif +} +#else /* TARGET_ABI_BITS == 32 */ +static inline uint64_t target_offset64(uint64_t word0, uint64_t word1) +{ + return word0; +} +#endif /* TARGET_ABI_BITS != 32 */ + +void print_termios(void *arg); + +/* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */ +#ifdef TARGET_ARM +static inline int regpairs_aligned(void *cpu_env, int num) +{ + return ((((CPUARMState *)cpu_env)->eabi) == 1) ; +} +#elif defined(TARGET_MIPS) && (TARGET_ABI_BITS == 32) +static inline int regpairs_aligned(void *cpu_env, int num) { return 1; } +#elif defined(TARGET_PPC) && !defined(TARGET_PPC64) +/* + * SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs + * of registers which translates to the same as ARM/MIPS, because we start with + * r3 as arg1 + */ +static inline int regpairs_aligned(void *cpu_env, int num) { return 1; } +#elif defined(TARGET_SH4) +/* SH4 doesn't align register pairs, except for p{read,write}64 */ +static inline int regpairs_aligned(void *cpu_env, int num) +{ + switch (num) { + case TARGET_NR_pread64: + case TARGET_NR_pwrite64: + return 1; + + default: + return 0; + } +} +#elif defined(TARGET_XTENSA) +static inline int regpairs_aligned(void *cpu_env, int num) { return 1; } +#elif defined(TARGET_HEXAGON) +static inline int regpairs_aligned(void *cpu_env, int num) { return 1; } +#else +static inline int regpairs_aligned(void *cpu_env, int num) { return 0; } +#endif + +/** + * preexit_cleanup: housekeeping before the guest exits + * + * env: the CPU state + * code: the exit code + */ +void preexit_cleanup(CPUArchState *env, int code); + +/* + * Include target-specific struct and function definitions; + * they may need access to the target-independent structures + * above, so include them last. + */ +#include "target_cpu.h" +#include "target_structs.h" + +#endif |