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/* -----------------------------------------------------------------------
   hpux32.S - Copyright (c) 2006 Free Software Foundation, Inc.
                        (c) 2008 Red Hat, Inc.
   based on src/pa/linux.S

   HP-UX PA 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 AUTHOR 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>

        .LEVEL 1.1
        .SPACE  $PRIVATE$
        .IMPORT $global$,DATA
        .IMPORT $$dyncall,MILLICODE
        .SUBSPA $DATA$
        .align  4

        /* void ffi_call_pa32(void (*)(char *, extended_cif *),
                               extended_cif *ecif,
                               unsigned bytes,
                               unsigned flags,
                               unsigned *rvalue,
                               void (*fn)(void));
         */

        .export ffi_call_pa32,ENTRY,PRIV_LEV=3
        .import ffi_prep_args_pa32,CODE

        .SPACE  $TEXT$
        .SUBSPA $CODE$
        .align  4

L$FB1
ffi_call_pa32
        .proc
        .callinfo       FRAME=64,CALLS,SAVE_RP,SAVE_SP,ENTRY_GR=4
        .entry
        stw     %rp, -20(%sp)
        copy    %r3, %r1
L$CFI11
        copy    %sp, %r3
L$CFI12

        /* Setup the stack for calling prep_args...
           We want the stack to look like this:

           [ Previous stack                            ] <- %r3

           [ 64-bytes register save area               ] <- %r4

           [ Stack space for actual call, passed as    ] <- %arg0
           [     arg0 to ffi_prep_args_pa32           ]

           [ Stack for calling prep_args               ] <- %sp
         */

        stwm    %r1, 64(%sp)
        stw     %r4, 12(%r3)
L$CFI13
        copy    %sp, %r4

        addl    %arg2, %r4, %arg0       ; arg stack
        stw     %arg3, -48(%r3)         ; save flags we need it later

        /* Call prep_args:
           %arg0(stack) -- set up above
           %arg1(ecif)  -- same as incoming param
           %arg2(bytes) -- same as incoming param */
        bl      ffi_prep_args_pa32,%r2
        ldo     64(%arg0), %sp
        ldo     -64(%sp), %sp

        /* now %sp should point where %arg0 was pointing.  */

        /* Load the arguments that should be passed in registers
           The fp args are loaded by the prep_args function.  */
        ldw     -36(%sp), %arg0
        ldw     -40(%sp), %arg1
        ldw     -44(%sp), %arg2
        ldw     -48(%sp), %arg3

        /* in case the function is going to return a structure
           we need to give it a place to put the result.  */
        ldw     -52(%r3), %ret0         ; %ret0 <- rvalue
        ldw     -56(%r3), %r22          ; %r22 <- function to call
        bl      $$dyncall, %r31         ; Call the user function
        copy    %r31, %rp

        /* Prepare to store the result; we need to recover flags and rvalue.  */
        ldw     -48(%r3), %r21          ; r21 <- flags
        ldw     -52(%r3), %r20          ; r20 <- rvalue

        /* Store the result according to the return type.  The most
           likely types should come first.  */

L$checkint
        comib,<>,n FFI_TYPE_INT, %r21, L$checkint8
        b       L$done
        stw     %ret0, 0(%r20)

L$checkint8
        comib,<>,n FFI_TYPE_UINT8, %r21, L$checkint16
        b       L$done
        stb     %ret0, 0(%r20)

L$checkint16
        comib,<>,n FFI_TYPE_UINT16, %r21, L$checkdbl
        b       L$done
        sth     %ret0, 0(%r20)

L$checkdbl
        comib,<>,n FFI_TYPE_DOUBLE, %r21, L$checkfloat
        b       L$done
        fstd    %fr4,0(%r20)

L$checkfloat
        comib,<>,n FFI_TYPE_FLOAT, %r21, L$checkll
        b       L$done
        fstw    %fr4L,0(%r20)

L$checkll
        comib,<>,n FFI_TYPE_UINT64, %r21, L$checksmst2
        stw     %ret0, 0(%r20)
        b       L$done
        stw     %ret1, 4(%r20)

L$checksmst2
        comib,<>,n FFI_TYPE_SMALL_STRUCT2, %r21, L$checksmst3
        /* 2-byte structs are returned in ret0 as ????xxyy.  */
        extru   %ret0, 23, 8, %r22
        stbs,ma %r22, 1(%r20)
        b       L$done
        stb     %ret0, 0(%r20)

L$checksmst3
        comib,<>,n FFI_TYPE_SMALL_STRUCT3, %r21, L$checksmst4
        /* 3-byte structs are returned in ret0 as ??xxyyzz.  */
        extru   %ret0, 15, 8, %r22
        stbs,ma %r22, 1(%r20)
        extru   %ret0, 23, 8, %r22
        stbs,ma %r22, 1(%r20)
        b       L$done
        stb     %ret0, 0(%r20)

L$checksmst4
        comib,<>,n FFI_TYPE_SMALL_STRUCT4, %r21, L$checksmst5
        /* 4-byte structs are returned in ret0 as wwxxyyzz.  */
        extru   %ret0, 7, 8, %r22
        stbs,ma %r22, 1(%r20)
        extru   %ret0, 15, 8, %r22
        stbs,ma %r22, 1(%r20)
        extru   %ret0, 23, 8, %r22
        stbs,ma %r22, 1(%r20)
        b       L$done
        stb     %ret0, 0(%r20)

L$checksmst5
        comib,<>,n FFI_TYPE_SMALL_STRUCT5, %r21, L$checksmst6
        /* 5 byte values are returned right justified:
              ret0     ret1
           5: ??????aa bbccddee */
        stbs,ma %ret0, 1(%r20)
        extru   %ret1, 7, 8, %r22
        stbs,ma %r22, 1(%r20)
        extru   %ret1, 15, 8, %r22
        stbs,ma %r22, 1(%r20)
        extru   %ret1, 23, 8, %r22
        stbs,ma %r22, 1(%r20)
        b       L$done
        stb     %ret1, 0(%r20)

L$checksmst6
        comib,<>,n FFI_TYPE_SMALL_STRUCT6, %r21, L$checksmst7
        /* 6 byte values are returned right justified:
              ret0     ret1
           6: ????aabb ccddeeff */
        extru   %ret0, 23, 8, %r22
        stbs,ma %r22, 1(%r20)
        stbs,ma %ret0, 1(%r20)
        extru   %ret1, 7, 8, %r22
        stbs,ma %r22, 1(%r20)
        extru   %ret1, 15, 8, %r22
        stbs,ma %r22, 1(%r20)
        extru   %ret1, 23, 8, %r22
        stbs,ma %r22, 1(%r20)
        b       L$done
        stb     %ret1, 0(%r20)

L$checksmst7
        comib,<>,n FFI_TYPE_SMALL_STRUCT7, %r21, L$checksmst8
        /* 7 byte values are returned right justified:
              ret0     ret1
           7: ??aabbcc ddeeffgg */
        extru   %ret0, 15, 8, %r22
        stbs,ma %r22, 1(%r20)
        extru   %ret0, 23, 8, %r22
        stbs,ma %r22, 1(%r20)
        stbs,ma %ret0, 1(%r20)
        extru   %ret1, 7, 8, %r22
        stbs,ma %r22, 1(%r20)
        extru   %ret1, 15, 8, %r22
        stbs,ma %r22, 1(%r20)
        extru   %ret1, 23, 8, %r22
        stbs,ma %r22, 1(%r20)
        b       L$done
        stb     %ret1, 0(%r20)

L$checksmst8
        comib,<>,n FFI_TYPE_SMALL_STRUCT8, %r21, L$done
        /* 8 byte values are returned right justified:
              ret0     ret1
           8: aabbccdd eeffgghh */
        extru   %ret0, 7, 8, %r22
        stbs,ma %r22, 1(%r20)
        extru   %ret0, 15, 8, %r22
        stbs,ma %r22, 1(%r20)
        extru   %ret0, 23, 8, %r22
        stbs,ma %r22, 1(%r20)
        stbs,ma %ret0, 1(%r20)
        extru   %ret1, 7, 8, %r22
        stbs,ma %r22, 1(%r20)
        extru   %ret1, 15, 8, %r22
        stbs,ma %r22, 1(%r20)
        extru   %ret1, 23, 8, %r22
        stbs,ma %r22, 1(%r20)
        stb     %ret1, 0(%r20)

L$done
        /* all done, return */
        copy    %r4, %sp        ; pop arg stack
        ldw     12(%r3), %r4
        ldwm    -64(%sp), %r3   ; .. and pop stack
        ldw     -20(%sp), %rp
        bv      %r0(%rp)
        nop
        .exit
        .procend
L$FE1

        /* void ffi_closure_pa32(void);
           Called with closure argument in %r21 */

        .SPACE $TEXT$
        .SUBSPA $CODE$
        .export ffi_closure_pa32,ENTRY,PRIV_LEV=3,RTNVAL=GR
        .import ffi_closure_inner_pa32,CODE
        .align 4
L$FB2
ffi_closure_pa32
        .proc
        .callinfo FRAME=64,CALLS,SAVE_RP,SAVE_SP,ENTRY_GR=3
        .entry

        stw     %rp, -20(%sp)
        copy    %r3, %r1
L$CFI21
        copy    %sp, %r3
L$CFI22
        stwm    %r1, 64(%sp)

        /* Put arguments onto the stack and call ffi_closure_inner.  */
        stw     %arg0, -36(%r3)
        stw     %arg1, -40(%r3)
        stw     %arg2, -44(%r3)
        stw     %arg3, -48(%r3)

        copy    %r21, %arg0
        bl      ffi_closure_inner_pa32, %r2
        copy    %r3, %arg1
        ldwm    -64(%sp), %r3
        ldw     -20(%sp), %rp
        ldw     -36(%sp), %ret0
        bv      %r0(%rp)
        ldw     -40(%sp), %ret1
        .exit
        .procend
L$FE2:

        .SPACE $PRIVATE$
        .SUBSPA $DATA$

        .align 4
        .EXPORT _GLOBAL__F_ffi_call_pa32,DATA
_GLOBAL__F_ffi_call_pa32
L$frame1:
        .word   L$ECIE1-L$SCIE1 ;# Length of Common Information Entry
L$SCIE1:
        .word   0x0     ;# CIE Identifier Tag
        .byte   0x1     ;# CIE Version
        .ascii "\0"     ;# CIE Augmentation
        .uleb128 0x1    ;# CIE Code Alignment Factor
        .sleb128 4      ;# CIE Data Alignment Factor
        .byte   0x2     ;# CIE RA Column
        .byte   0xc     ;# DW_CFA_def_cfa
        .uleb128 0x1e
        .uleb128 0x0
        .align 4
L$ECIE1:
L$SFDE1:
        .word   L$EFDE1-L$ASFDE1        ;# FDE Length
L$ASFDE1:
        .word   L$ASFDE1-L$frame1       ;# FDE CIE offset
        .word   L$FB1   ;# FDE initial location
        .word   L$FE1-L$FB1     ;# FDE address range

        .byte   0x4     ;# DW_CFA_advance_loc4
        .word   L$CFI11-L$FB1
        .byte   0x83    ;# DW_CFA_offset, column 0x3
        .uleb128 0x0
        .byte   0x11    ;# DW_CFA_offset_extended_sf; save r2 at [r30-20]
        .uleb128 0x2
        .sleb128 -5

        .byte   0x4     ;# DW_CFA_advance_loc4
        .word   L$CFI12-L$CFI11
        .byte   0xd     ;# DW_CFA_def_cfa_register = r3
        .uleb128 0x3

        .byte   0x4     ;# DW_CFA_advance_loc4
        .word   L$CFI13-L$CFI12
        .byte   0x84    ;# DW_CFA_offset, column 0x4
        .uleb128 0x3

        .align 4
L$EFDE1:

L$SFDE2:
        .word   L$EFDE2-L$ASFDE2        ;# FDE Length
L$ASFDE2:
        .word   L$ASFDE2-L$frame1       ;# FDE CIE offset
        .word   L$FB2   ;# FDE initial location
        .word   L$FE2-L$FB2     ;# FDE address range
        .byte   0x4     ;# DW_CFA_advance_loc4
        .word   L$CFI21-L$FB2
        .byte   0x83    ;# DW_CFA_offset, column 0x3
        .uleb128 0x0
        .byte   0x11    ;# DW_CFA_offset_extended_sf
        .uleb128 0x2
        .sleb128 -5

        .byte   0x4     ;# DW_CFA_advance_loc4
        .word   L$CFI22-L$CFI21
        .byte   0xd     ;# DW_CFA_def_cfa_register = r3
        .uleb128 0x3

        .align 4
L$EFDE2: