forked from Minki/linux
8cf14af0a7
The funny "range" exception table entries we had were only used by the compat layer socketcall assembly, and it wasn't even needed there. For free we now get proper exception table sorting and fast binary searching. Signed-off-by: David S. Miller <davem@davemloft.net>
345 lines
11 KiB
ArmAsm
345 lines
11 KiB
ArmAsm
/* $Id: sys32.S,v 1.12 2000/03/24 04:17:37 davem Exp $
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* sys32.S: I-cache tricks for 32-bit compatibility layer simple
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* conversions.
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*
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* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
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* Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
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*/
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#include <linux/config.h>
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#include <asm/errno.h>
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/* NOTE: call as jump breaks return stack, we have to avoid that */
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.text
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#define SIGN1(STUB,SYSCALL,REG1) \
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.align 32; \
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.globl STUB; \
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STUB: sethi %hi(SYSCALL), %g1; \
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jmpl %g1 + %lo(SYSCALL), %g0; \
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sra REG1, 0, REG1
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#define SIGN2(STUB,SYSCALL,REG1,REG2) \
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.align 32; \
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.globl STUB; \
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STUB: sethi %hi(SYSCALL), %g1; \
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sra REG1, 0, REG1; \
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jmpl %g1 + %lo(SYSCALL), %g0; \
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sra REG2, 0, REG2
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#define SIGN3(STUB,SYSCALL,REG1,REG2,REG3) \
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.align 32; \
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.globl STUB; \
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STUB: sra REG1, 0, REG1; \
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sethi %hi(SYSCALL), %g1; \
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sra REG2, 0, REG2; \
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jmpl %g1 + %lo(SYSCALL), %g0; \
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sra REG3, 0, REG3
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#define SIGN4(STUB,SYSCALL,REG1,REG2,REG3,REG4) \
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.align 32; \
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.globl STUB; \
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STUB: sra REG1, 0, REG1; \
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sethi %hi(SYSCALL), %g1; \
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sra REG2, 0, REG2; \
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sra REG3, 0, REG3; \
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jmpl %g1 + %lo(SYSCALL), %g0; \
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sra REG4, 0, REG4
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SIGN1(sys32_exit, sparc_exit, %o0)
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SIGN1(sys32_exit_group, sys_exit_group, %o0)
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SIGN1(sys32_wait4, compat_sys_wait4, %o2)
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SIGN1(sys32_creat, sys_creat, %o1)
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SIGN1(sys32_mknod, sys_mknod, %o1)
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SIGN1(sys32_perfctr, sys_perfctr, %o0)
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SIGN1(sys32_umount, sys_umount, %o1)
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SIGN1(sys32_signal, sys_signal, %o0)
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SIGN1(sys32_access, sys_access, %o1)
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SIGN1(sys32_msync, sys_msync, %o2)
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SIGN2(sys32_reboot, sys_reboot, %o0, %o1)
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SIGN1(sys32_setitimer, compat_sys_setitimer, %o0)
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SIGN1(sys32_getitimer, compat_sys_getitimer, %o0)
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SIGN1(sys32_sethostname, sys_sethostname, %o1)
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SIGN1(sys32_swapon, sys_swapon, %o1)
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SIGN1(sys32_sigaction, compat_sys_sigaction, %o0)
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SIGN1(sys32_rt_sigaction, compat_sys_rt_sigaction, %o0)
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SIGN1(sys32_sigprocmask, compat_sys_sigprocmask, %o0)
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SIGN1(sys32_rt_sigprocmask, compat_sys_rt_sigprocmask, %o0)
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SIGN2(sys32_rt_sigqueueinfo, compat_sys_rt_sigqueueinfo, %o0, %o1)
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SIGN1(sys32_getrusage, compat_sys_getrusage, %o0)
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SIGN1(sys32_setxattr, sys_setxattr, %o4)
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SIGN1(sys32_lsetxattr, sys_lsetxattr, %o4)
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SIGN1(sys32_fsetxattr, sys_fsetxattr, %o4)
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SIGN1(sys32_fgetxattr, sys_fgetxattr, %o0)
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SIGN1(sys32_flistxattr, sys_flistxattr, %o0)
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SIGN1(sys32_fremovexattr, sys_fremovexattr, %o0)
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SIGN2(sys32_tkill, sys_tkill, %o0, %o1)
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SIGN1(sys32_epoll_create, sys_epoll_create, %o0)
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SIGN3(sys32_epoll_ctl, sys_epoll_ctl, %o0, %o1, %o2)
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SIGN3(sys32_epoll_wait, sys_epoll_wait, %o0, %o2, %o3)
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SIGN1(sys32_readahead, compat_sys_readahead, %o0)
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SIGN2(sys32_fadvise64, compat_sys_fadvise64, %o0, %o4)
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SIGN2(sys32_fadvise64_64, compat_sys_fadvise64_64, %o0, %o5)
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SIGN2(sys32_bdflush, sys_bdflush, %o0, %o1)
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SIGN1(sys32_mlockall, sys_mlockall, %o0)
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SIGN1(sys32_nfsservctl, compat_sys_nfsservctl, %o0)
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SIGN1(sys32_clock_settime, compat_sys_clock_settime, %o1)
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SIGN1(sys32_clock_nanosleep, compat_sys_clock_nanosleep, %o1)
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SIGN1(sys32_timer_settime, compat_sys_timer_settime, %o1)
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SIGN1(sys32_io_submit, compat_sys_io_submit, %o1)
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SIGN1(sys32_mq_open, compat_sys_mq_open, %o1)
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SIGN1(sys32_select, compat_sys_select, %o0)
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SIGN1(sys32_mkdir, sys_mkdir, %o1)
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SIGN3(sys32_futex, compat_sys_futex, %o1, %o2, %o5)
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SIGN1(sys32_sysfs, compat_sys_sysfs, %o0)
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SIGN3(sys32_ipc, compat_sys_ipc, %o1, %o2, %o3)
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SIGN2(sys32_sendfile, compat_sys_sendfile, %o0, %o1)
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SIGN2(sys32_sendfile64, compat_sys_sendfile64, %o0, %o1)
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SIGN1(sys32_prctl, sys_prctl, %o0)
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SIGN1(sys32_sched_rr_get_interval, compat_sys_sched_rr_get_interval, %o0)
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SIGN2(sys32_waitpid, sys_waitpid, %o0, %o2)
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SIGN1(sys32_getgroups, sys_getgroups, %o0)
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SIGN1(sys32_getpgid, sys_getpgid, %o0)
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SIGN2(sys32_getpriority, sys_getpriority, %o0, %o1)
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SIGN1(sys32_getsid, sys_getsid, %o0)
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SIGN2(sys32_kill, sys_kill, %o0, %o1)
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SIGN1(sys32_nice, sys_nice, %o0)
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SIGN1(sys32_lseek, sys_lseek, %o1)
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SIGN2(sys32_open, sparc32_open, %o1, %o2)
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SIGN1(sys32_readlink, sys_readlink, %o2)
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SIGN1(sys32_sched_get_priority_max, sys_sched_get_priority_max, %o0)
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SIGN1(sys32_sched_get_priority_min, sys_sched_get_priority_min, %o0)
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SIGN1(sys32_sched_getparam, sys_sched_getparam, %o0)
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SIGN1(sys32_sched_getscheduler, sys_sched_getscheduler, %o0)
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SIGN1(sys32_sched_setparam, sys_sched_setparam, %o0)
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SIGN2(sys32_sched_setscheduler, sys_sched_setscheduler, %o0, %o1)
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SIGN1(sys32_getdomainname, sys_getdomainname, %o1)
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SIGN1(sys32_setdomainname, sys_setdomainname, %o1)
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SIGN1(sys32_setgroups, sys_setgroups, %o0)
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SIGN2(sys32_setpgid, sys_setpgid, %o0, %o1)
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SIGN3(sys32_setpriority, sys_setpriority, %o0, %o1, %o2)
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SIGN1(sys32_ssetmask, sys_ssetmask, %o0)
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SIGN2(sys32_syslog, sys_syslog, %o0, %o2)
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SIGN1(sys32_umask, sys_umask, %o0)
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SIGN3(sys32_tgkill, sys_tgkill, %o0, %o1, %o2)
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SIGN1(sys32_sendto, sys_sendto, %o0)
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SIGN1(sys32_recvfrom, sys_recvfrom, %o0)
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SIGN3(sys32_socket, sys_socket, %o0, %o1, %o2)
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SIGN2(sys32_connect, sys_connect, %o0, %o2)
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SIGN2(sys32_bind, sys_bind, %o0, %o2)
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SIGN2(sys32_listen, sys_listen, %o0, %o1)
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SIGN1(sys32_recvmsg, compat_sys_recvmsg, %o0)
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SIGN1(sys32_sendmsg, compat_sys_sendmsg, %o0)
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SIGN2(sys32_shutdown, sys_shutdown, %o0, %o1)
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SIGN3(sys32_socketpair, sys_socketpair, %o0, %o1, %o2)
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SIGN1(sys32_getpeername, sys_getpeername, %o0)
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SIGN1(sys32_getsockname, sys_getsockname, %o0)
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SIGN2(sys32_ioprio_get, sys_ioprio_get, %o0, %o1)
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SIGN3(sys32_ioprio_set, sys_ioprio_set, %o0, %o1, %o2)
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.globl sys32_mmap2
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sys32_mmap2:
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sethi %hi(sys_mmap), %g1
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jmpl %g1 + %lo(sys_mmap), %g0
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sllx %o5, 12, %o5
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.align 32
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.globl sys32_socketcall
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sys32_socketcall: /* %o0=call, %o1=args */
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cmp %o0, 1
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bl,pn %xcc, do_einval
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cmp %o0, 17
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bg,pn %xcc, do_einval
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sub %o0, 1, %o0
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sllx %o0, 5, %o0
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sethi %hi(__socketcall_table_begin), %g2
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or %g2, %lo(__socketcall_table_begin), %g2
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jmpl %g2 + %o0, %g0
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nop
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.align 32
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__socketcall_table_begin:
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/* Each entry is exactly 32 bytes. */
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do_sys_socket: /* sys_socket(int, int, int) */
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1: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_socket), %g1
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2: ldswa [%o1 + 0x8] %asi, %o2
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jmpl %g1 + %lo(sys_socket), %g0
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3: ldswa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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do_sys_bind: /* sys_bind(int fd, struct sockaddr *, int) */
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4: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_bind), %g1
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5: ldswa [%o1 + 0x8] %asi, %o2
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jmpl %g1 + %lo(sys_bind), %g0
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6: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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do_sys_connect: /* sys_connect(int, struct sockaddr *, int) */
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7: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_connect), %g1
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8: ldswa [%o1 + 0x8] %asi, %o2
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jmpl %g1 + %lo(sys_connect), %g0
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9: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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do_sys_listen: /* sys_listen(int, int) */
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10: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_listen), %g1
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jmpl %g1 + %lo(sys_listen), %g0
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11: ldswa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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nop
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do_sys_accept: /* sys_accept(int, struct sockaddr *, int *) */
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12: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_accept), %g1
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13: lduwa [%o1 + 0x8] %asi, %o2
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jmpl %g1 + %lo(sys_accept), %g0
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14: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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do_sys_getsockname: /* sys_getsockname(int, struct sockaddr *, int *) */
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15: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_getsockname), %g1
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16: lduwa [%o1 + 0x8] %asi, %o2
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jmpl %g1 + %lo(sys_getsockname), %g0
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17: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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do_sys_getpeername: /* sys_getpeername(int, struct sockaddr *, int *) */
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18: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_getpeername), %g1
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19: lduwa [%o1 + 0x8] %asi, %o2
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jmpl %g1 + %lo(sys_getpeername), %g0
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20: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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do_sys_socketpair: /* sys_socketpair(int, int, int, int *) */
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21: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_socketpair), %g1
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22: ldswa [%o1 + 0x8] %asi, %o2
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23: lduwa [%o1 + 0xc] %asi, %o3
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jmpl %g1 + %lo(sys_socketpair), %g0
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24: ldswa [%o1 + 0x4] %asi, %o1
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nop
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nop
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do_sys_send: /* sys_send(int, void *, size_t, unsigned int) */
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25: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_send), %g1
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26: lduwa [%o1 + 0x8] %asi, %o2
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27: lduwa [%o1 + 0xc] %asi, %o3
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jmpl %g1 + %lo(sys_send), %g0
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28: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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do_sys_recv: /* sys_recv(int, void *, size_t, unsigned int) */
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29: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_recv), %g1
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30: lduwa [%o1 + 0x8] %asi, %o2
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31: lduwa [%o1 + 0xc] %asi, %o3
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jmpl %g1 + %lo(sys_recv), %g0
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32: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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do_sys_sendto: /* sys_sendto(int, u32, compat_size_t, unsigned int, u32, int) */
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33: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_sendto), %g1
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34: lduwa [%o1 + 0x8] %asi, %o2
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35: lduwa [%o1 + 0xc] %asi, %o3
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36: lduwa [%o1 + 0x10] %asi, %o4
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37: ldswa [%o1 + 0x14] %asi, %o5
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jmpl %g1 + %lo(sys_sendto), %g0
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38: lduwa [%o1 + 0x4] %asi, %o1
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do_sys_recvfrom: /* sys_recvfrom(int, u32, compat_size_t, unsigned int, u32, u32) */
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39: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_recvfrom), %g1
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40: lduwa [%o1 + 0x8] %asi, %o2
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41: lduwa [%o1 + 0xc] %asi, %o3
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42: lduwa [%o1 + 0x10] %asi, %o4
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43: lduwa [%o1 + 0x14] %asi, %o5
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jmpl %g1 + %lo(sys_recvfrom), %g0
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44: lduwa [%o1 + 0x4] %asi, %o1
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do_sys_shutdown: /* sys_shutdown(int, int) */
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45: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_shutdown), %g1
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jmpl %g1 + %lo(sys_shutdown), %g0
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46: ldswa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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nop
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do_sys_setsockopt: /* compat_sys_setsockopt(int, int, int, char *, int) */
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47: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(compat_sys_setsockopt), %g1
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48: ldswa [%o1 + 0x8] %asi, %o2
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49: lduwa [%o1 + 0xc] %asi, %o3
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50: ldswa [%o1 + 0x10] %asi, %o4
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jmpl %g1 + %lo(compat_sys_setsockopt), %g0
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51: ldswa [%o1 + 0x4] %asi, %o1
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nop
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do_sys_getsockopt: /* compat_sys_getsockopt(int, int, int, u32, u32) */
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52: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(compat_sys_getsockopt), %g1
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53: ldswa [%o1 + 0x8] %asi, %o2
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54: lduwa [%o1 + 0xc] %asi, %o3
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55: lduwa [%o1 + 0x10] %asi, %o4
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jmpl %g1 + %lo(compat_sys_getsockopt), %g0
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56: ldswa [%o1 + 0x4] %asi, %o1
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nop
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do_sys_sendmsg: /* compat_sys_sendmsg(int, struct compat_msghdr *, unsigned int) */
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57: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(compat_sys_sendmsg), %g1
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58: lduwa [%o1 + 0x8] %asi, %o2
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jmpl %g1 + %lo(compat_sys_sendmsg), %g0
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59: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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do_sys_recvmsg: /* compat_sys_recvmsg(int, struct compat_msghdr *, unsigned int) */
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60: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(compat_sys_recvmsg), %g1
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61: lduwa [%o1 + 0x8] %asi, %o2
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jmpl %g1 + %lo(compat_sys_recvmsg), %g0
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62: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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do_einval:
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retl
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mov -EINVAL, %o0
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do_efault:
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retl
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mov -EFAULT, %o0
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.section __ex_table
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.align 4
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.word 1b, do_efault, 2b, do_efault, 3b, do_efault, 4b, do_efault
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.word 5b, do_efault, 6b, do_efault, 7b, do_efault, 8b, do_efault
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.word 9b, do_efault, 10b, do_efault, 11b, do_efault, 12b, do_efault
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.word 13b, do_efault, 14b, do_efault, 15b, do_efault, 16b, do_efault
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.word 17b, do_efault, 18b, do_efault, 19b, do_efault, 20b, do_efault
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.word 21b, do_efault, 22b, do_efault, 23b, do_efault, 24b, do_efault
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.word 25b, do_efault, 26b, do_efault, 27b, do_efault, 28b, do_efault
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.word 29b, do_efault, 30b, do_efault, 31b, do_efault, 32b, do_efault
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.word 33b, do_efault, 34b, do_efault, 35b, do_efault, 36b, do_efault
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.word 37b, do_efault, 38b, do_efault, 39b, do_efault, 40b, do_efault
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.word 41b, do_efault, 42b, do_efault, 43b, do_efault, 44b, do_efault
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.word 45b, do_efault, 46b, do_efault, 47b, do_efault, 48b, do_efault
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.word 49b, do_efault, 50b, do_efault, 51b, do_efault, 52b, do_efault
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.word 53b, do_efault, 54b, do_efault, 55b, do_efault, 56b, do_efault
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.word 57b, do_efault, 58b, do_efault, 59b, do_efault, 60b, do_efault
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.word 61b, do_efault, 62b, do_efault
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.previous
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