diff options
Diffstat (limited to 'gdb/gdbserver/linux-x86-low.c')
| -rw-r--r-- | gdb/gdbserver/linux-x86-low.c | 423 |
1 files changed, 8 insertions, 415 deletions
diff --git a/gdb/gdbserver/linux-x86-low.c b/gdb/gdbserver/linux-x86-low.c index 4a01750c172..ff51a95357b 100644 --- a/gdb/gdbserver/linux-x86-low.c +++ b/gdb/gdbserver/linux-x86-low.c @@ -27,6 +27,10 @@ #include "x86-xstate.h" #include "nat/gdb_ptrace.h" +#ifdef __x86_64__ +#include "nat/amd64-linux-siginfo.h" +#endif + #include "gdb_proc_service.h" /* Don't include elf/common.h if linux/elf.h got included by gdb_proc_service.h. */ @@ -670,399 +674,6 @@ x86_debug_reg_state (pid_t pid) as debugging it with a 32-bit GDBSERVER, we do the 32-bit <-> 64-bit conversion in-place ourselves. */ -/* These types below (compat_*) define a siginfo type that is layout - compatible with the siginfo type exported by the 32-bit userspace - support. */ - -#ifdef __x86_64__ - -typedef int compat_int_t; -typedef unsigned int compat_uptr_t; - -typedef int compat_time_t; -typedef int compat_timer_t; -typedef int compat_clock_t; - -struct compat_timeval -{ - compat_time_t tv_sec; - int tv_usec; -}; - -typedef union compat_sigval -{ - compat_int_t sival_int; - compat_uptr_t sival_ptr; -} compat_sigval_t; - -typedef struct compat_siginfo -{ - int si_signo; - int si_errno; - int si_code; - - union - { - int _pad[((128 / sizeof (int)) - 3)]; - - /* kill() */ - struct - { - unsigned int _pid; - unsigned int _uid; - } _kill; - - /* POSIX.1b timers */ - struct - { - compat_timer_t _tid; - int _overrun; - compat_sigval_t _sigval; - } _timer; - - /* POSIX.1b signals */ - struct - { - unsigned int _pid; - unsigned int _uid; - compat_sigval_t _sigval; - } _rt; - - /* SIGCHLD */ - struct - { - unsigned int _pid; - unsigned int _uid; - int _status; - compat_clock_t _utime; - compat_clock_t _stime; - } _sigchld; - - /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ - struct - { - unsigned int _addr; - } _sigfault; - - /* SIGPOLL */ - struct - { - int _band; - int _fd; - } _sigpoll; - } _sifields; -} compat_siginfo_t; - -/* For x32, clock_t in _sigchld is 64bit aligned at 4 bytes. */ -typedef long __attribute__ ((__aligned__ (4))) compat_x32_clock_t; - -typedef struct compat_x32_siginfo -{ - int si_signo; - int si_errno; - int si_code; - - union - { - int _pad[((128 / sizeof (int)) - 3)]; - - /* kill() */ - struct - { - unsigned int _pid; - unsigned int _uid; - } _kill; - - /* POSIX.1b timers */ - struct - { - compat_timer_t _tid; - int _overrun; - compat_sigval_t _sigval; - } _timer; - - /* POSIX.1b signals */ - struct - { - unsigned int _pid; - unsigned int _uid; - compat_sigval_t _sigval; - } _rt; - - /* SIGCHLD */ - struct - { - unsigned int _pid; - unsigned int _uid; - int _status; - compat_x32_clock_t _utime; - compat_x32_clock_t _stime; - } _sigchld; - - /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ - struct - { - unsigned int _addr; - } _sigfault; - - /* SIGPOLL */ - struct - { - int _band; - int _fd; - } _sigpoll; - } _sifields; -} compat_x32_siginfo_t __attribute__ ((__aligned__ (8))); - -#define cpt_si_pid _sifields._kill._pid -#define cpt_si_uid _sifields._kill._uid -#define cpt_si_timerid _sifields._timer._tid -#define cpt_si_overrun _sifields._timer._overrun -#define cpt_si_status _sifields._sigchld._status -#define cpt_si_utime _sifields._sigchld._utime -#define cpt_si_stime _sifields._sigchld._stime -#define cpt_si_ptr _sifields._rt._sigval.sival_ptr -#define cpt_si_addr _sifields._sigfault._addr -#define cpt_si_band _sifields._sigpoll._band -#define cpt_si_fd _sifields._sigpoll._fd - -/* glibc at least up to 2.3.2 doesn't have si_timerid, si_overrun. - In their place is si_timer1,si_timer2. */ -#ifndef si_timerid -#define si_timerid si_timer1 -#endif -#ifndef si_overrun -#define si_overrun si_timer2 -#endif - -static void -compat_siginfo_from_siginfo (compat_siginfo_t *to, siginfo_t *from) -{ - memset (to, 0, sizeof (*to)); - - to->si_signo = from->si_signo; - to->si_errno = from->si_errno; - to->si_code = from->si_code; - - if (to->si_code == SI_TIMER) - { - to->cpt_si_timerid = from->si_timerid; - to->cpt_si_overrun = from->si_overrun; - to->cpt_si_ptr = (intptr_t) from->si_ptr; - } - else if (to->si_code == SI_USER) - { - to->cpt_si_pid = from->si_pid; - to->cpt_si_uid = from->si_uid; - } - else if (to->si_code < 0) - { - to->cpt_si_pid = from->si_pid; - to->cpt_si_uid = from->si_uid; - to->cpt_si_ptr = (intptr_t) from->si_ptr; - } - else - { - switch (to->si_signo) - { - case SIGCHLD: - to->cpt_si_pid = from->si_pid; - to->cpt_si_uid = from->si_uid; - to->cpt_si_status = from->si_status; - to->cpt_si_utime = from->si_utime; - to->cpt_si_stime = from->si_stime; - break; - case SIGILL: - case SIGFPE: - case SIGSEGV: - case SIGBUS: - to->cpt_si_addr = (intptr_t) from->si_addr; - break; - case SIGPOLL: - to->cpt_si_band = from->si_band; - to->cpt_si_fd = from->si_fd; - break; - default: - to->cpt_si_pid = from->si_pid; - to->cpt_si_uid = from->si_uid; - to->cpt_si_ptr = (intptr_t) from->si_ptr; - break; - } - } -} - -static void -siginfo_from_compat_siginfo (siginfo_t *to, compat_siginfo_t *from) -{ - memset (to, 0, sizeof (*to)); - - to->si_signo = from->si_signo; - to->si_errno = from->si_errno; - to->si_code = from->si_code; - - if (to->si_code == SI_TIMER) - { - to->si_timerid = from->cpt_si_timerid; - to->si_overrun = from->cpt_si_overrun; - to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; - } - else if (to->si_code == SI_USER) - { - to->si_pid = from->cpt_si_pid; - to->si_uid = from->cpt_si_uid; - } - else if (to->si_code < 0) - { - to->si_pid = from->cpt_si_pid; - to->si_uid = from->cpt_si_uid; - to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; - } - else - { - switch (to->si_signo) - { - case SIGCHLD: - to->si_pid = from->cpt_si_pid; - to->si_uid = from->cpt_si_uid; - to->si_status = from->cpt_si_status; - to->si_utime = from->cpt_si_utime; - to->si_stime = from->cpt_si_stime; - break; - case SIGILL: - case SIGFPE: - case SIGSEGV: - case SIGBUS: - to->si_addr = (void *) (intptr_t) from->cpt_si_addr; - break; - case SIGPOLL: - to->si_band = from->cpt_si_band; - to->si_fd = from->cpt_si_fd; - break; - default: - to->si_pid = from->cpt_si_pid; - to->si_uid = from->cpt_si_uid; - to->si_ptr = (void* ) (intptr_t) from->cpt_si_ptr; - break; - } - } -} - -static void -compat_x32_siginfo_from_siginfo (compat_x32_siginfo_t *to, - siginfo_t *from) -{ - memset (to, 0, sizeof (*to)); - - to->si_signo = from->si_signo; - to->si_errno = from->si_errno; - to->si_code = from->si_code; - - if (to->si_code == SI_TIMER) - { - to->cpt_si_timerid = from->si_timerid; - to->cpt_si_overrun = from->si_overrun; - to->cpt_si_ptr = (intptr_t) from->si_ptr; - } - else if (to->si_code == SI_USER) - { - to->cpt_si_pid = from->si_pid; - to->cpt_si_uid = from->si_uid; - } - else if (to->si_code < 0) - { - to->cpt_si_pid = from->si_pid; - to->cpt_si_uid = from->si_uid; - to->cpt_si_ptr = (intptr_t) from->si_ptr; - } - else - { - switch (to->si_signo) - { - case SIGCHLD: - to->cpt_si_pid = from->si_pid; - to->cpt_si_uid = from->si_uid; - to->cpt_si_status = from->si_status; - to->cpt_si_utime = from->si_utime; - to->cpt_si_stime = from->si_stime; - break; - case SIGILL: - case SIGFPE: - case SIGSEGV: - case SIGBUS: - to->cpt_si_addr = (intptr_t) from->si_addr; - break; - case SIGPOLL: - to->cpt_si_band = from->si_band; - to->cpt_si_fd = from->si_fd; - break; - default: - to->cpt_si_pid = from->si_pid; - to->cpt_si_uid = from->si_uid; - to->cpt_si_ptr = (intptr_t) from->si_ptr; - break; - } - } -} - -static void -siginfo_from_compat_x32_siginfo (siginfo_t *to, - compat_x32_siginfo_t *from) -{ - memset (to, 0, sizeof (*to)); - - to->si_signo = from->si_signo; - to->si_errno = from->si_errno; - to->si_code = from->si_code; - - if (to->si_code == SI_TIMER) - { - to->si_timerid = from->cpt_si_timerid; - to->si_overrun = from->cpt_si_overrun; - to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; - } - else if (to->si_code == SI_USER) - { - to->si_pid = from->cpt_si_pid; - to->si_uid = from->cpt_si_uid; - } - else if (to->si_code < 0) - { - to->si_pid = from->cpt_si_pid; - to->si_uid = from->cpt_si_uid; - to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; - } - else - { - switch (to->si_signo) - { - case SIGCHLD: - to->si_pid = from->cpt_si_pid; - to->si_uid = from->cpt_si_uid; - to->si_status = from->cpt_si_status; - to->si_utime = from->cpt_si_utime; - to->si_stime = from->cpt_si_stime; - break; - case SIGILL: - case SIGFPE: - case SIGSEGV: - case SIGBUS: - to->si_addr = (void *) (intptr_t) from->cpt_si_addr; - break; - case SIGPOLL: - to->si_band = from->cpt_si_band; - to->si_fd = from->cpt_si_fd; - break; - default: - to->si_pid = from->cpt_si_pid; - to->si_uid = from->cpt_si_uid; - to->si_ptr = (void* ) (intptr_t) from->cpt_si_ptr; - break; - } - } -} - -#endif /* __x86_64__ */ - /* Convert a native/host siginfo object, into/from the siginfo in the layout of the inferiors' architecture. Returns true if any conversion was done; false otherwise. If DIRECTION is 1, then copy @@ -1079,30 +690,12 @@ x86_siginfo_fixup (siginfo_t *native, void *inf, int direction) /* Is the inferior 32-bit? If so, then fixup the siginfo object. */ if (!is_64bit_tdesc ()) - { - gdb_assert (sizeof (siginfo_t) == sizeof (compat_siginfo_t)); - - if (direction == 0) - compat_siginfo_from_siginfo ((struct compat_siginfo *) inf, native); - else - siginfo_from_compat_siginfo (native, (struct compat_siginfo *) inf); - - return 1; - } + return amd64_linux_siginfo_fixup_common (native, inf, direction, + FIXUP_32); /* No fixup for native x32 GDB. */ else if (!is_elf64 && sizeof (void *) == 8) - { - gdb_assert (sizeof (siginfo_t) == sizeof (compat_x32_siginfo_t)); - - if (direction == 0) - compat_x32_siginfo_from_siginfo ((struct compat_x32_siginfo *) inf, - native); - else - siginfo_from_compat_x32_siginfo (native, - (struct compat_x32_siginfo *) inf); - - return 1; - } + return amd64_linux_siginfo_fixup_common (native, inf, direction, + FIXUP_X32); #endif return 0; |