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https://github.com/torvalds/linux
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278 lines
8.3 KiB
ArmAsm
278 lines
8.3 KiB
ArmAsm
/*
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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 <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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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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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_futex, compat_sys_futex, %o1)
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SIGN1(sys32_recvfrom, compat_sys_recvfrom, %o0)
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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_renameat2, sys_renameat2, %o0, %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, 18
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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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do_einval:
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retl
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mov -EINVAL, %o0
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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_sys_accept4: /* sys_accept4(int, struct sockaddr *, int *, int) */
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63: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_accept4), %g1
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64: lduwa [%o1 + 0x8] %asi, %o2
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65: ldswa [%o1 + 0xc] %asi, %o3
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jmpl %g1 + %lo(sys_accept4), %g0
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66: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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.section __ex_table,"a"
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.align 4
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.word 1b, __retl_efault, 2b, __retl_efault
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.word 3b, __retl_efault, 4b, __retl_efault
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.word 5b, __retl_efault, 6b, __retl_efault
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.word 7b, __retl_efault, 8b, __retl_efault
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.word 9b, __retl_efault, 10b, __retl_efault
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.word 11b, __retl_efault, 12b, __retl_efault
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.word 13b, __retl_efault, 14b, __retl_efault
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.word 15b, __retl_efault, 16b, __retl_efault
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.word 17b, __retl_efault, 18b, __retl_efault
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.word 19b, __retl_efault, 20b, __retl_efault
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.word 21b, __retl_efault, 22b, __retl_efault
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.word 23b, __retl_efault, 24b, __retl_efault
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.word 25b, __retl_efault, 26b, __retl_efault
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.word 27b, __retl_efault, 28b, __retl_efault
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.word 29b, __retl_efault, 30b, __retl_efault
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.word 31b, __retl_efault, 32b, __retl_efault
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.word 33b, __retl_efault, 34b, __retl_efault
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.word 35b, __retl_efault, 36b, __retl_efault
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.word 37b, __retl_efault, 38b, __retl_efault
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.word 39b, __retl_efault, 40b, __retl_efault
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.word 41b, __retl_efault, 42b, __retl_efault
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.word 43b, __retl_efault, 44b, __retl_efault
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.word 45b, __retl_efault, 46b, __retl_efault
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.word 47b, __retl_efault, 48b, __retl_efault
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.word 49b, __retl_efault, 50b, __retl_efault
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.word 51b, __retl_efault, 52b, __retl_efault
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.word 53b, __retl_efault, 54b, __retl_efault
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.word 55b, __retl_efault, 56b, __retl_efault
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.word 57b, __retl_efault, 58b, __retl_efault
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.word 59b, __retl_efault, 60b, __retl_efault
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.word 61b, __retl_efault, 62b, __retl_efault
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.word 63b, __retl_efault, 64b, __retl_efault
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.word 65b, __retl_efault, 66b, __retl_efault
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.previous
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