1 /* -----------------------------------------------------------------------
2 osf.S - Copyright (c) 1998, 2001 Red Hat
4 Alpha/OSF Foreign Function Interface
6 $Id: osf.S,v 1.1.1.1 1998/11/29 16:48:16 green Exp $
8 Permission is hereby granted, free of charge, to any person obtaining
9 a copy of this software and associated documentation files (the
10 ``Software''), to deal in the Software without restriction, including
11 without limitation the rights to use, copy, modify, merge, publish,
12 distribute, sublicense, and/or sell copies of the Software, and to
13 permit persons to whom the Software is furnished to do so, subject to
14 the following conditions:
16 The above copyright notice and this permission notice shall be included
17 in all copies or substantial portions of the Software.
19 THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
22 IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25 OTHER DEALINGS IN THE SOFTWARE.
26 ----------------------------------------------------------------------- */
29 #include <fficonfig.h>
35 /* ffi_call_osf (void *args, unsigned long bytes, unsigned flags,
36 void *raddr, void (*fnaddr)());
38 Bit o trickiness here -- ARGS+BYTES is the base of the stack frame
39 for this function. This has been allocated by ffi_call. We also
40 deallocate some of the stack that has been alloca'd. */
46 .frame $15, 32, $26, 0
63 # Load up all of the (potential) argument registers.
77 # Deallocate the register argument area.
83 # If the return value pointer is NULL, assume no return value.
89 # Store the return value out in the proper type.
90 cmpeq $18, FFI_TYPE_INT, $1
92 cmpeq $18, FFI_TYPE_FLOAT, $2
94 cmpeq $18, FFI_TYPE_DOUBLE, $3
122 /* ffi_closure_osf(...)
124 Receives the closure argument in $1. */
127 .globl ffi_closure_osf
130 .frame $30, 16*8, $26, 0
131 .mask 0x4000000, -16*8
140 # Store all of the potential argument registers in va_list format.
154 # Call ffi_closure_osf_inner to do the bulk of the work.
158 jsr $26, ffi_closure_osf_inner
162 # Load up the return value in the proper type.
167 jmp $31, ($1), $load_32
261 .gprel32 $load_none # FFI_TYPE_VOID
262 .gprel32 $load_32 # FFI_TYPE_INT
263 .gprel32 $load_float # FFI_TYPE_FLOAT
264 .gprel32 $load_double # FFI_TYPE_DOUBLE
265 .gprel32 $load_double # FFI_TYPE_LONGDOUBLE
266 .gprel32 $load_u8 # FFI_TYPE_UINT8
267 .gprel32 $load_s8 # FFI_TYPE_SINT8
268 .gprel32 $load_u16 # FFI_TYPE_UINT16
269 .gprel32 $load_s16 # FFI_TYPE_SINT16
270 .gprel32 $load_32 # FFI_TYPE_UINT32
271 .gprel32 $load_32 # FFI_TYPE_SINT32
272 .gprel32 $load_64 # FFI_TYPE_UINT64
273 .gprel32 $load_64 # FFI_TYPE_SINT64
274 .gprel32 $load_none # FFI_TYPE_STRUCT
275 .gprel32 $load_64 # FFI_TYPE_POINTER
277 /* Assert that the table above is in sync with ffi.h. */
279 #if FFI_TYPE_FLOAT != 2 \
280 || FFI_TYPE_DOUBLE != 3 \
281 || FFI_TYPE_UINT8 != 5 \
282 || FFI_TYPE_SINT8 != 6 \
283 || FFI_TYPE_UINT16 != 7 \
284 || FFI_TYPE_SINT16 != 8 \
285 || FFI_TYPE_UINT32 != 9 \
286 || FFI_TYPE_SINT32 != 10 \
287 || FFI_TYPE_UINT64 != 11 \
288 || FFI_TYPE_SINT64 != 12 \
289 || FFI_TYPE_STRUCT != 13 \
290 || FFI_TYPE_POINTER != 14 \
291 || FFI_TYPE_LAST != 14
292 #error "osf.S out of sync with ffi.h"
296 .section .eh_frame,EH_FRAME_FLAGS,@progbits
298 .4byte $LECIE1-$LSCIE1 # Length of Common Information Entry
300 .4byte 0x0 # CIE Identifier Tag
301 .byte 0x1 # CIE Version
302 .ascii "zR\0" # CIE Augmentation
303 .byte 0x1 # uleb128 0x1; CIE Code Alignment Factor
304 .byte 0x78 # sleb128 -8; CIE Data Alignment Factor
305 .byte 0x1a # CIE RA Column
306 .byte 0x1 # uleb128 0x1; Augmentation size
307 .byte 0x1b # FDE Encoding (pcrel sdata4)
308 .byte 0xc # DW_CFA_def_cfa
309 .byte 0x1e # uleb128 0x1e
310 .byte 0x0 # uleb128 0x0
314 .4byte $LEFDE1-$LASFDE1 # FDE Length
316 .4byte $LASFDE1-__FRAME_BEGIN__ # FDE CIE offset
317 .4byte $LFB1-. # FDE initial location
318 .4byte $LFE1-$LFB1 # FDE address range
319 .byte 0x0 # uleb128 0x0; Augmentation size
320 .byte 0x4 # DW_CFA_advance_loc4
322 .byte 0xe # DW_CFA_def_cfa_offset
323 .byte 0x30 # uleb128 0x30
324 .byte 0x4 # DW_CFA_advance_loc4
326 .byte 0x9a # DW_CFA_offset, column 0x1a
327 .byte 0x6 # uleb128 0x6
328 .byte 0x8f # DW_CFA_offset, column 0xf
329 .byte 0x5 # uleb128 0x5
330 .byte 0x4 # DW_CFA_advance_loc4
332 .byte 0xc # DW_CFA_def_cfa
333 .byte 0xf # uleb128 0xf
334 .byte 0x30 # uleb128 0x30
339 .4byte $LEFDE3-$LASFDE3 # FDE Length
341 .4byte $LASFDE3-__FRAME_BEGIN__ # FDE CIE offset
342 .4byte $LFB2-. # FDE initial location
343 .4byte $LFE2-$LFB2 # FDE address range
344 .byte 0x0 # uleb128 0x0; Augmentation size
345 .byte 0x4 # DW_CFA_advance_loc4
347 .byte 0xe # DW_CFA_def_cfa_offset
348 .byte 0x90,0x1 # uleb128 0x90
349 .byte 0x4 # DW_CFA_advance_loc4
351 .byte 0x9a # DW_CFA_offset, column 0x1a
352 .byte 0x12 # uleb128 0x12