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/* -----------------------------------------------------------------------
   v9.S - Copyright (c) 2000, 2003, 2004, 2008 Red Hat, Inc.
   
   SPARC 64-bit Foreign Function Interface 

   Permission is hereby granted, free of charge, to any person obtaining
   a copy of this software and associated documentation files (the
   ``Software''), to deal in the Software without restriction, including
   without limitation the rights to use, copy, modify, merge, publish,
   distribute, sublicense, and/or sell copies of the Software, and to
   permit persons to whom the Software is furnished to do so, subject to
   the following conditions:

   The above copyright notice and this permission notice shall be included
   in all copies or substantial portions of the Software.

   THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   DEALINGS IN THE SOFTWARE.
   ----------------------------------------------------------------------- */

#define LIBFFI_ASM      
#include <fficonfig.h>
#include <ffi.h>

#ifdef SPARC64
/* Only compile this in for 64bit builds, because otherwise the object file
   will have inproper architecture due to used instructions.  */

#define STACKFRAME 176          /* Minimum stack framesize for SPARC 64-bit */
#define STACK_BIAS 2047
#define ARGS (128)              /* Offset of register area in frame */

.text
        .align 8
.globl ffi_call_v9
.globl _ffi_call_v9

ffi_call_v9:
_ffi_call_v9:
.LLFB1:
        save    %sp, -STACKFRAME, %sp
.LLCFI0:
        
        sub     %sp, %i2, %sp   ! alloca() space in stack for frame to set up
        add     %sp, STACKFRAME+STACK_BIAS, %l0 ! %l0 has start of 
                                                ! frame to set up

        mov     %l0, %o0        ! call routine to set up frame
        call    %i0
         mov    %i1, %o1        ! (delay)
        brz,pt  %o0, 1f
         ldx    [%l0+ARGS], %o0 ! call foreign function

        ldd     [%l0+ARGS], %f0
        ldd     [%l0+ARGS+8], %f2
        ldd     [%l0+ARGS+16], %f4
        ldd     [%l0+ARGS+24], %f6
        ldd     [%l0+ARGS+32], %f8
        ldd     [%l0+ARGS+40], %f10
        ldd     [%l0+ARGS+48], %f12
        ldd     [%l0+ARGS+56], %f14
        ldd     [%l0+ARGS+64], %f16
        ldd     [%l0+ARGS+72], %f18
        ldd     [%l0+ARGS+80], %f20
        ldd     [%l0+ARGS+88], %f22
        ldd     [%l0+ARGS+96], %f24
        ldd     [%l0+ARGS+104], %f26
        ldd     [%l0+ARGS+112], %f28
        ldd     [%l0+ARGS+120], %f30

1:      ldx     [%l0+ARGS+8], %o1
        ldx     [%l0+ARGS+16], %o2
        ldx     [%l0+ARGS+24], %o3
        ldx     [%l0+ARGS+32], %o4
        ldx     [%l0+ARGS+40], %o5
        call    %i5
         sub    %l0, STACK_BIAS, %sp    ! (delay) switch to frame

        ! If the return value pointer is NULL, assume no return value.
        brz,pn  %i4, done
         nop

        cmp     %i3, FFI_TYPE_INT
        be,a,pt %icc, done
         stx    %o0, [%i4+0]    ! (delay)

        cmp     %i3, FFI_TYPE_FLOAT
        be,a,pn %icc, done
         st     %f0, [%i4+0]    ! (delay)

        cmp     %i3, FFI_TYPE_DOUBLE
        be,a,pn %icc, done
         std    %f0, [%i4+0]    ! (delay)

        cmp     %i3, FFI_TYPE_STRUCT
        be,pn   %icc, dostruct

        cmp     %i3, FFI_TYPE_LONGDOUBLE
        bne,pt  %icc, done
         nop
        std     %f0, [%i4+0]
        std     %f2, [%i4+8]

done:   ret
         restore

dostruct:
        /* This will not work correctly for unions. */
        stx     %o0, [%i4+0]
        stx     %o1, [%i4+8]
        stx     %o2, [%i4+16]
        stx     %o3, [%i4+24]
        std     %f0, [%i4+32]
        std     %f2, [%i4+40]
        std     %f4, [%i4+48]
        std     %f6, [%i4+56]
        ret
         restore
.LLFE1:

.ffi_call_v9_end:
        .size   ffi_call_v9,.ffi_call_v9_end-ffi_call_v9


#undef STACKFRAME
#define STACKFRAME       336    /* 16*8 register window +
                                   6*8 args backing store +
                                   20*8 locals */
#define FP              %fp+STACK_BIAS

/* ffi_closure_v9(...)

   Receives the closure argument in %g1.   */

        .text
        .align 8
        .globl ffi_closure_v9

ffi_closure_v9:
.LLFB2:
        save    %sp, -STACKFRAME, %sp
.LLCFI1:

        ! Store all of the potential argument registers in va_list format.
        stx     %i0, [FP+128+0]
        stx     %i1, [FP+128+8]
        stx     %i2, [FP+128+16]
        stx     %i3, [FP+128+24]
        stx     %i4, [FP+128+32]
        stx     %i5, [FP+128+40]

        ! Store possible floating point argument registers too.
        std     %f0,  [FP-128]
        std     %f2,  [FP-120]
        std     %f4,  [FP-112]
        std     %f6,  [FP-104]
        std     %f8,  [FP-96]
        std     %f10, [FP-88]
        std     %f12, [FP-80]
        std     %f14, [FP-72]
        std     %f16, [FP-64]
        std     %f18, [FP-56]
        std     %f20, [FP-48]
        std     %f22, [FP-40]
        std     %f24, [FP-32]
        std     %f26, [FP-24]
        std     %f28, [FP-16]
        std     %f30, [FP-8]

        ! Call ffi_closure_sparc_inner to do the bulk of the work.
        mov     %g1, %o0
        add     %fp, STACK_BIAS-160, %o1
        add     %fp, STACK_BIAS+128, %o2
        call    ffi_closure_sparc_inner_v9
         add    %fp, STACK_BIAS-128, %o3

        ! Load up the return value in the proper type.
        ! See ffi_prep_cif_machdep for the list of cases.
        cmp     %o0, FFI_TYPE_VOID
        be,pn   %icc, done1

        cmp     %o0, FFI_TYPE_INT
        be,pn   %icc, integer

        cmp     %o0, FFI_TYPE_FLOAT
        be,a,pn %icc, done1
         ld     [FP-160], %f0

        cmp     %o0, FFI_TYPE_DOUBLE
        be,a,pn %icc, done1
         ldd    [FP-160], %f0

#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
        cmp     %o0, FFI_TYPE_LONGDOUBLE
        be,a,pn %icc, longdouble1
         ldd    [FP-160], %f0
#endif

        ! FFI_TYPE_STRUCT
        ldx     [FP-152], %i1
        ldx     [FP-144], %i2
        ldx     [FP-136], %i3
        ldd     [FP-160], %f0
        ldd     [FP-152], %f2
        ldd     [FP-144], %f4
        ldd     [FP-136], %f6

integer:
        ldx     [FP-160], %i0

done1:
        ret
         restore

#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
longdouble1:
        ldd     [FP-152], %f2
        ret
         restore
#endif
.LLFE2:

.ffi_closure_v9_end:
        .size   ffi_closure_v9,.ffi_closure_v9_end-ffi_closure_v9

#ifdef HAVE_RO_EH_FRAME
        .section        ".eh_frame",#alloc
#else
        .section        ".eh_frame",#alloc,#write
#endif
.LLframe1:
        .uaword .LLECIE1-.LLSCIE1       ! Length of Common Information Entry
.LLSCIE1:
        .uaword 0x0     ! CIE Identifier Tag
        .byte   0x1     ! CIE Version
        .ascii "zR\0"   ! CIE Augmentation
        .byte   0x1     ! uleb128 0x1; CIE Code Alignment Factor
        .byte   0x78    ! sleb128 -8; CIE Data Alignment Factor
        .byte   0xf     ! CIE RA Column
        .byte   0x1     ! uleb128 0x1; Augmentation size
#ifdef HAVE_AS_SPARC_UA_PCREL
        .byte   0x1b    ! FDE Encoding (pcrel sdata4)
#else
        .byte   0x50    ! FDE Encoding (aligned absolute)
#endif
        .byte   0xc     ! DW_CFA_def_cfa
        .byte   0xe     ! uleb128 0xe
        .byte   0xff,0xf        ! uleb128 0x7ff
        .align 8
.LLECIE1:
.LLSFDE1:
        .uaword .LLEFDE1-.LLASFDE1      ! FDE Length
.LLASFDE1:
        .uaword .LLASFDE1-.LLframe1     ! FDE CIE offset
#ifdef HAVE_AS_SPARC_UA_PCREL
        .uaword %r_disp32(.LLFB1)
        .uaword .LLFE1-.LLFB1           ! FDE address range
#else
        .align 8
        .xword  .LLFB1
        .uaxword        .LLFE1-.LLFB1   ! FDE address range
#endif
        .byte   0x0     ! uleb128 0x0; Augmentation size
        .byte   0x4     ! DW_CFA_advance_loc4
        .uaword .LLCFI0-.LLFB1
        .byte   0xd     ! DW_CFA_def_cfa_register
        .byte   0x1e    ! uleb128 0x1e
        .byte   0x2d    ! DW_CFA_GNU_window_save
        .byte   0x9     ! DW_CFA_register
        .byte   0xf     ! uleb128 0xf
        .byte   0x1f    ! uleb128 0x1f
        .align 8
.LLEFDE1:
.LLSFDE2:
        .uaword .LLEFDE2-.LLASFDE2      ! FDE Length
.LLASFDE2:
        .uaword .LLASFDE2-.LLframe1     ! FDE CIE offset
#ifdef HAVE_AS_SPARC_UA_PCREL
        .uaword %r_disp32(.LLFB2)
        .uaword .LLFE2-.LLFB2           ! FDE address range
#else
        .align 8
        .xword  .LLFB2
        .uaxword        .LLFE2-.LLFB2   ! FDE address range
#endif
        .byte   0x0     ! uleb128 0x0; Augmentation size
        .byte   0x4     ! DW_CFA_advance_loc4
        .uaword .LLCFI1-.LLFB2
        .byte   0xd     ! DW_CFA_def_cfa_register
        .byte   0x1e    ! uleb128 0x1e
        .byte   0x2d    ! DW_CFA_GNU_window_save
        .byte   0x9     ! DW_CFA_register
        .byte   0xf     ! uleb128 0xf
        .byte   0x1f    ! uleb128 0x1f
        .align 8
.LLEFDE2:
#endif

#ifdef __linux__
        .section        .note.GNU-stack,"",@progbits
#endif