osfmk/arm/commpage/commpage_sigs.h

   1 /*
   2  * Copyright (c) 2017 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 #define BSWAP_32(x) \
  29         (((x) << 24) & 0xff000000) | \
  30         (((x) <<  8) & 0x00ff0000) | \
  31         (((x) >>  8) & 0x0000ff00) | \
  32         (((x) >> 24) & 0x000000ff)
  33
  34 #define BSWAP_32_OFFSET(x) \
  35         BSWAP_32(x + _COMM_PAGE_SIGS_OFFSET)
  36
  37 #define COMMPAGE_SIGS_BEGIN \
  38 .const_data                             ; \
  39 .align 2                                ; \
  40 .private_extern _commpage_sigs_begin    ; \
  41 _commpage_sigs_begin:
  42
  43 #define COMMPAGE_SIGS_DONE \
  44 .private_extern _commpage_sigs_end      ; \
  45 _commpage_sigs_end:                     ; \
  46
  47 #define COMMPAGE_SIG_START(x) \
  48 .private_extern _commpage_sig ## x      ; \
  49 _commpage_sig ## x ## :                 ; \
  50         .long BSWAP_32(0x14400000)      ; \
  51         .long BSWAP_32(0x00000001)      ; \
  52         .asciz # x                      ; \
  53         .align 2                        ; \
  54         .long BSWAP_32(0x14400000)
  55
  56 #define COMMPAGE_SIG_END(x) \
  57         .long BSWAP_32(0x4e800020)      ; \
  58         .long BSWAP_32(0x14400000)      ; \
  59         .long BSWAP_32(0x00000000)      ; \
  60         .asciz # x                      ; \
  61         .align 2                        ; \
  62         .long BSWAP_32(0x14400000)
  63
  64 #define OBJCRTP_SIG_START(x) COMMPAGE_SIG_START(x)
  65
  66 #define OBJCRTP_SIG_END(x) \
  67         .long BSWAP_32(0x14400000)      ; \
  68         .long BSWAP_32(0x00000000)      ; \
  69         .asciz # x                      ; \
  70         .align 2                        ; \
  71         .long BSWAP_32(0x14400000)
  72
  73 #define OBJCRTP_SIG_CALL_SUBJECT(x) \
  74         .long BSWAP_32(0x14400002)      ; \
  75         .long BSWAP_32(0x00000000)      ; \
  76         .long BSWAP_32(0x00040000)      ; \
  77         .long BSWAP_32(0x00000000)      ; \
  78         .asciz # x                      ; \
  79         .align 2                        ; \
  80         .long BSWAP_32(0x14400002)
  81
  82 #define ARG(n) \
  83         ((((n * 2) + 6) << 20) + 4)
  84
  85 #define COMMPAGE_SIG_ARG(n) \
  86         .long BSWAP_32(0x14400001)      ; \
  87         .long BSWAP_32(ARG(n))          ; \
  88         .long BSWAP_32(0x14400001)
  89
  90 #define COMMPAGE_SIG_CALL(x, n) \
  91         .long BSWAP_32(0x14400002)      ; \
  92         .long BSWAP_32(n)               ; \
  93         .long BSWAP_32(0x00000000)      ; \
  94         .long BSWAP_32(0x00000000)      ; \
  95         .asciz # x                      ; \
  96         .align 2                        ; \
  97         .long BSWAP_32(0x14400002)
  98
  99 #define COMMPAGE_SIG_CALL_VOID(x) \
 100         COMMPAGE_SIG_CALL(x, 0)
 101
 102 #define COMMPAGE_SIG_CALL_RET0(x) \
 103         COMMPAGE_SIG_CALL(x, ARG(0))
 104
 105 #define COMMPAGE_SIG_CALL_RET1(x) \
 106         COMMPAGE_SIG_CALL(x, ARG(1))
 107
 108 #define COMMPAGE_FAST_TRAP(x) \
 109         .long BSWAP_32(0x14400005) ; \
 110         .long BSWAP_32_OFFSET(x) ; \
 111         .long BSWAP_32(0x14400005)