osfmk/i386/commpage/commpage_sigs.h

   1 #define BSWAP_32(x) \
   2         ((x & 0x000000ff) << 24) | \
   3         ((x & 0x0000ff00) <<  8) | \
   4         ((x & 0x00ff0000) >>  8) | \
   5         ((x & 0xff000000) >> 24)
   6
   7 #define COMMPAGE_SIGS_BEGIN \
   8 .const_data                             ; \
   9 .align 2                                ; \
  10 .private_extern _commpage_sigs_begin    ; \
  11 _commpage_sigs_begin:
  12
  13 #define COMMPAGE_SIGS_DONE \
  14 .private_extern _commpage_sigs_end      ; \
  15 _commpage_sigs_end:                     ; \
  16
  17 #define COMMPAGE_SIG_START(x) \
  18 .private_extern _commpage_sig ## x      ; \
  19 _commpage_sig ## x ## :                 ; \
  20         .long BSWAP_32(0x14400000)      ; \
  21         .long BSWAP_32(0x00000001)      ; \
  22         .asciz # x                      ; \
  23         .align 2                        ; \
  24         .long BSWAP_32(0x14400000)
  25
  26 #define COMMPAGE_SIG_END(x) \
  27         .long BSWAP_32(0x4e800020)      ; \
  28         .long BSWAP_32(0x14400000)      ; \
  29         .long BSWAP_32(0x00000000)      ; \
  30         .asciz # x                      ; \
  31         .align 2                        ; \
  32         .long BSWAP_32(0x14400000)
  33
  34 #define ARG(n) \
  35         ((((n * 2) + 6) << 20) + 4)
  36
  37 #define COMMPAGE_SIG_ARG(n) \
  38         .long BSWAP_32(0x14400001)      ; \
  39         .long BSWAP_32(ARG(n))          ; \
  40         .long BSWAP_32(0x14400001)
  41
  42 #define COMMPAGE_SIG_CALL(x, n) \
  43         .long BSWAP_32(0x14400002)      ; \
  44         .long BSWAP_32(n)               ; \
  45         .long BSWAP_32(0x00000000)      ; \
  46         .asciz # x                      ; \
  47         .align 2                        ; \
  48         .long BSWAP_32(0x14400002)
  49
  50 #define COMMPAGE_SIG_CALL_VOID(x) \
  51         COMMPAGE_SIG_CALL(x, 0)
  52
  53 #define COMMPAGE_SIG_CALL_RET0(x) \
  54         COMMPAGE_SIG_CALL(x, ARG(0))
  55
  56 #define COMMPAGE_SIG_CALL_RET1(x) \
  57         COMMPAGE_SIG_CALL(x, ARG(1))