#include "syscall_defs.h"
#include "target_syscall.h"
#include "exec/gdbstub.h"
-#include "qemu/queue.h"
/* This is the size of the host kernel's sigset_t, needed where we make
* direct system calls that take a sigset_t pointer and a size.
abi_ulong env_strings;
abi_ulong file_string;
uint32_t elf_flags;
- int personality;
-#ifdef CONFIG_USE_FDPIC
+ int personality;
+ abi_ulong alignment;
+
+ /* The fields below are used in FDPIC mode. */
abi_ulong loadmap_addr;
uint16_t nsegs;
void *loadsegs;
abi_ulong pt_dynamic_addr;
+ abi_ulong interpreter_loadmap_addr;
+ abi_ulong interpreter_pt_dynamic_addr;
struct image_info *other_info;
+#ifdef TARGET_MIPS
+ int fp_abi;
+ int interp_fp_abi;
#endif
};
# endif
int swi_errno;
#endif
-#ifdef TARGET_UNICORE32
- int swi_errno;
-#endif
#if defined(TARGET_I386) && !defined(TARGET_X86_64)
abi_ulong target_v86;
struct vm86_saved_state vm86_saved_regs;
#endif
abi_ulong child_tidptr;
#ifdef TARGET_M68K
- int sim_syscalls;
abi_ulong tp_value;
#endif
-#if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
+#if defined(TARGET_ARM) || defined(TARGET_M68K)
/* Extra fields for semihosted binaries. */
abi_ulong heap_base;
abi_ulong heap_limit;
/* Nonzero if process_pending_signals() needs to do something (either
* handle a pending signal or unblock signals).
* This flag is written from a signal handler so should be accessed via
- * the atomic_read() and atomic_write() functions. (It is not accessed
+ * the atomic_read() and atomic_set() functions. (It is not accessed
* from multiple threads.)
*/
int signal_pending;
+ /* This thread's sigaltstack, if it has one */
+ struct target_sigaltstack sigaltstack_used;
} __attribute__((aligned(16))) TaskState;
extern char *exec_path;
struct linux_binprm {
char buf[BPRM_BUF_SIZE] __attribute__((aligned));
abi_ulong p;
- int fd;
+ int fd;
int e_uid, e_gid;
int argc, envc;
char **argv;
struct target_pt_regs * regs, struct image_info *infop,
struct linux_binprm *);
+/* 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);
+
uint32_t get_elf_eflags(int fd);
int load_elf_binary(struct linux_binprm *bprm, struct image_info *info);
int load_flt_binary(struct linux_binprm *bprm, struct image_info *info);
long do_rt_sigreturn(CPUArchState *env);
abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
int do_sigprocmask(int how, const sigset_t *set, sigset_t *oldset);
+abi_long do_swapcontext(CPUArchState *env, abi_ulong uold_ctx,
+ abi_ulong unew_ctx, abi_long ctx_size);
/**
* block_signals: block all signals while handling this guest syscall
*
abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
abi_ulong new_size, unsigned long flags,
abi_ulong new_addr);
-int target_msync(abi_ulong start, abi_ulong len, int flags);
extern unsigned long last_brk;
extern abi_ulong mmap_next_start;
-abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
+abi_ulong mmap_find_vma(abi_ulong, abi_ulong, abi_ulong);
void mmap_fork_start(void);
void mmap_fork_end(int child);
static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
{
- return page_check_range((target_ulong)addr, size,
+ return guest_addr_valid(addr) &&
+ (size == 0 || guest_addr_valid(addr + size - 1)) &&
+ page_check_range((target_ulong)addr, size,
(type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
}
These are usually used to access struct data members once the struct has
been locked - usually with lock_user_struct. */
-/* Tricky points:
- - Use __builtin_choose_expr to avoid type promotion from ?:,
- - Invalid sizes result in a compile time error stemming from
- the fact that abort has no parameters.
- - It's easier to use the endian-specific unaligned load/store
- functions than host-endian unaligned load/store plus tswapN. */
-
-#define __put_user_e(x, hptr, e) \
- (__builtin_choose_expr(sizeof(*(hptr)) == 1, stb_p, \
- __builtin_choose_expr(sizeof(*(hptr)) == 2, stw_##e##_p, \
- __builtin_choose_expr(sizeof(*(hptr)) == 4, stl_##e##_p, \
- __builtin_choose_expr(sizeof(*(hptr)) == 8, stq_##e##_p, abort)))) \
- ((hptr), (x)), (void)0)
-
-#define __get_user_e(x, hptr, e) \
- ((x) = (typeof(*hptr))( \
- __builtin_choose_expr(sizeof(*(hptr)) == 1, ldub_p, \
- __builtin_choose_expr(sizeof(*(hptr)) == 2, lduw_##e##_p, \
- __builtin_choose_expr(sizeof(*(hptr)) == 4, ldl_##e##_p, \
- __builtin_choose_expr(sizeof(*(hptr)) == 8, ldq_##e##_p, abort)))) \
- (hptr)), (void)0)
+/*
+ * Tricky points:
+ * - Use __builtin_choose_expr to avoid type promotion from ?:,
+ * - Invalid sizes result in a compile time error stemming from
+ * the fact that abort has no parameters.
+ * - It's easier to use the endian-specific unaligned load/store
+ * functions than host-endian unaligned load/store plus tswapN.
+ * - The pragmas are necessary only to silence a clang false-positive
+ * warning: see https://bugs.llvm.org/show_bug.cgi?id=39113 .
+ * - gcc has bugs in its _Pragma() support in some versions, eg
+ * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83256 -- so we only
+ * include the warning-suppression pragmas for clang
+ */
+#if defined(__clang__) && __has_warning("-Waddress-of-packed-member")
+#define PRAGMA_DISABLE_PACKED_WARNING \
+ _Pragma("GCC diagnostic push"); \
+ _Pragma("GCC diagnostic ignored \"-Waddress-of-packed-member\"")
+
+#define PRAGMA_REENABLE_PACKED_WARNING \
+ _Pragma("GCC diagnostic pop")
+
+#else
+#define PRAGMA_DISABLE_PACKED_WARNING
+#define PRAGMA_REENABLE_PACKED_WARNING
+#endif
+
+#define __put_user_e(x, hptr, e) \
+ do { \
+ PRAGMA_DISABLE_PACKED_WARNING; \
+ (__builtin_choose_expr(sizeof(*(hptr)) == 1, stb_p, \
+ __builtin_choose_expr(sizeof(*(hptr)) == 2, stw_##e##_p, \
+ __builtin_choose_expr(sizeof(*(hptr)) == 4, stl_##e##_p, \
+ __builtin_choose_expr(sizeof(*(hptr)) == 8, stq_##e##_p, abort)))) \
+ ((hptr), (x)), (void)0); \
+ PRAGMA_REENABLE_PACKED_WARNING; \
+ } while (0)
+
+#define __get_user_e(x, hptr, e) \
+ do { \
+ PRAGMA_DISABLE_PACKED_WARNING; \
+ ((x) = (typeof(*hptr))( \
+ __builtin_choose_expr(sizeof(*(hptr)) == 1, ldub_p, \
+ __builtin_choose_expr(sizeof(*(hptr)) == 2, lduw_##e##_p, \
+ __builtin_choose_expr(sizeof(*(hptr)) == 4, ldl_##e##_p, \
+ __builtin_choose_expr(sizeof(*(hptr)) == 8, ldq_##e##_p, abort)))) \
+ (hptr)), (void)0); \
+ PRAGMA_REENABLE_PACKED_WARNING; \
+ } while (0)
+
#ifdef TARGET_WORDS_BIGENDIAN
# define __put_user(x, hptr) __put_user_e(x, hptr, be)
#include <pthread.h>
+static inline int is_error(abi_long ret)
+{
+ return (abi_ulong)ret >= (abi_ulong)(-4096);
+}
+
+/**
+ * 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_signal.h"
#include "target_structs.h"
#endif /* QEMU_H */
projects / qemu.git / blobdiff