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/* 
 * sys32.S: I-cache tricks for 32-bit compatability layer simple
 *          conversions.
 *
 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
 * Copyright (C) 1998 Jakub Jelinek   (jj@ultra.linux.cz)
 * Copyright (C) 2000 Ken Aaker (kdaaker@rchland.vnet.ibm.com)
 * For PPC ABI convention is parms in Regs 3-10.
 * The router in entry.S clears the high 32 bits in the first
 * 4 arguments (R3-R6).
 *
 *      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.
 */

#include "ppc_asm.h"
#include <asm/errno.h>
#include <asm/processor.h>

        .text

_GLOBAL(sys32_mmap)
        clrldi          r7, r7, 32      /* int fd parm */
        clrldi          r8, r8, 32      /* off_t offset parm */
        b               .sys_mmap

_GLOBAL(sys32_lseek)
        extsw           r4,r4           /* sign extend off_t offset parm */
        b               .sys_lseek

_GLOBAL(sys32_sendto)
        clrldi          r7, r7, 32      /* struct sockaddr *addr parm */
        clrldi          r8, r8, 32      /* int addr_len parm */
        b               .sys_sendto

_GLOBAL(sys32_recvfrom)
        clrldi          r7, r7, 32      /* struct sockaddr *addr parm */
        clrldi          r8, r8, 32      /* int *addr_len parm */
        b               .sys_recvfrom

_GLOBAL(sys32_getsockopt)
        clrldi          r7, r7, 32      /* int *optlen parm */
        b               .sys_getsockopt

_GLOBAL(sys32_bdflush)
        extsw           r4,r4           /* sign extend long data parm */
        b               .sys_bdflush

_GLOBAL(ppc32_mmap2)
        clrldi          r7, r7, 32      /* unsigned long fd parm */
        clrldi          r8, r8, 32      /* unsigned long pgoff */
        b               .sys32_mmap2

_GLOBAL(sys32_socketcall)       /* r3=call, r4=args */
        cmpwi           r3, 1
        blt-            .do_einval
        cmpwi           r3, 17
        bgt-            .do_einval
        subi            r3, r3, 1       /* index into socketcall_table vectors and jmp */
        sldi            r3, r3, 3       /* each entry is 8 bytes */
        LOADADDR(r10,.socketcall_table_begin)
        ldx             r10, r10, r3
        mtctr           r10
        bctr

/* Socket function vectored fix ups for 32 bit */
_STATIC(do_sys_socket) /* sys_socket(int, int, int) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwa             r4,4(r10)
        lwa             r5,8(r10)
        b               .sys_socket

_STATIC(do_sys_bind) /* sys_bind(int fd, struct sockaddr *, int) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwz             r4,4(r10)
        lwa             r5,8(r10)
        b               .sys_bind

_STATIC(do_sys_connect) /* sys_connect(int, struct sockaddr *, int) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwz             r4,4(r10)
        lwa             r5,8(r10)
        b               .sys_connect

_STATIC(do_sys_listen) /* sys_listen(int, int) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwa             r4,4(r10)
        b               .sys_listen

_STATIC(do_sys_accept) /* sys_accept(int, struct sockaddr *, int *) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwz             r4,4(r10)
        lwz             r5,8(r10)
        b               .sys_accept

_STATIC(do_sys_getsockname) /* sys_getsockname(int, struct sockaddr *, int *) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwz             r4,4(r10)
        lwz             r5,8(r10)
        b               .sys_getsockname

_STATIC(do_sys_getpeername) /* sys_getpeername(int, struct sockaddr *, int *) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwz             r4,4(r10)
        lwz             r5,8(r10)
        b               .sys_getpeername

_STATIC(do_sys_socketpair) /* sys_socketpair(int, int, int, int *) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwa             r4,4(r10)
        lwa             r5,8(r10)
        lwz             r6,12(r10)
        b               .sys_socketpair

_STATIC(do_sys_send) /* sys_send(int, void *, size_t, unsigned int) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwz             r4,4(r10)
        lwz             r5,8(r10)
        lwz             r6,12(r10)
        b               .sys_send

_STATIC(do_sys_recv) /* sys_recv(int, void *, size_t, unsigned int) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwz             r4,4(r10)
        lwz             r5,8(r10)
        lwz             r6,12(r10)
        b               .sys_recv

_STATIC(do_sys_sendto) /* sys32_sendto(int, u32, __kernel_size_t32, unsigned int, u32, int) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwz             r4,4(r10)
        lwz             r5,8(r10)
        lwz             r6,12(r10)
        lwz             r7,16(r10)
        lwa             r8,20(r10)
        b               .sys32_sendto

_STATIC(do_sys_recvfrom) /* sys32_recvfrom(int, u32, __kernel_size_t32, unsigned int, u32, u32) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwz             r4,4(r10)
        lwz             r5,8(r10)
        lwz             r6,12(r10)
        lwz             r7,16(r10)
        lwz             r8,20(r10)
        b               .sys32_recvfrom

_STATIC(do_sys_shutdown) /* sys_shutdown(int, int) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwa             r4,4(r10)
        b               .sys_shutdown

_STATIC(do_sys_setsockopt) /* sys32_setsockopt(int, int, int, char *, int) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwa             r4,4(r10)
        lwa             r5,8(r10)
        lwz             r6,12(r10)
        lwa             r7,16(r10)
        b               .sys32_setsockopt

_STATIC(do_sys_getsockopt) /* sys32_getsockopt(int, int, int, u32, u32) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwa             r4,4(r10)
        lwa             r5,8(r10)
        lwz             r6,12(r10)
        lwz             r7,16(r10)
        b               .sys32_getsockopt

_STATIC(do_sys_sendmsg) /* sys32_sendmsg(int, struct msghdr32 *, unsigned int) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwz             r4,4(r10)
        lwa             r5,8(r10)
        b               .sys32_sendmsg

_STATIC(do_sys_recvmsg) /* sys32_recvmsg(int, struct msghdr32 *, unsigned int) */
        mr              r10,r4
        lwa             r3,0(r10)
        lwz             r4,4(r10)
        lwa             r5,8(r10)
        b               .sys32_recvmsg

_STATIC(do_einval)
        li      r3,-EINVAL
        b       .ret_from_syscall_1
_STATIC(do_efault)
        li      r3,-EFAULT
        b       .ret_from_syscall_1

        .data
        .align  8
_GLOBAL(socketcall_table_begin)
        .llong          .do_sys_socket
        .llong          .do_sys_bind
        .llong          .do_sys_connect
        .llong          .do_sys_listen
        .llong          .do_sys_accept
        .llong          .do_sys_getsockname
        .llong          .do_sys_getpeername
        .llong          .do_sys_socketpair
        .llong          .do_sys_send
        .llong          .do_sys_recv
        .llong          .do_sys_sendto
        .llong          .do_sys_recvfrom
        .llong          .do_sys_shutdown
        .llong          .do_sys_setsockopt
        .llong          .do_sys_getsockopt
        .llong          .do_sys_sendmsg
        .llong          .do_sys_recvmsg
_GLOBAL(socketcall_table_end)
        .section        __ex_table,"a"
        .align          3
        .llong          .socketcall_table_begin
        .llong          0
        .llong          .socketcall_table_end
        .llong          .do_efault
        .previous