1 /* -----------------------------------------------------------------------
2 v8.S - Copyright (c) 1996, 1997, 2003 Cygnus Solutions
4 Sparc Foreign Function Interface
6 Permission is hereby granted, free of charge, to any person obtaining
7 a copy of this software and associated documentation files (the
8 ``Software''), to deal in the Software without restriction, including
9 without limitation the rights to use, copy, modify, merge, publish,
10 distribute, sublicense, and/or sell copies of the Software, and to
11 permit persons to whom the Software is furnished to do so, subject to
12 the following conditions:
14 The above copyright notice and this permission notice shall be included
15 in all copies or substantial portions of the Software.
17 THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 OTHER DEALINGS IN THE SOFTWARE.
24 ----------------------------------------------------------------------- */
29 #define STACKFRAME 96 /* Minimum stack framesize for SPARC */
30 #define ARGS (64+4) /* Offset of register area in frame */
40 save %sp, -STACKFRAME, %sp
43 sub %sp, %i2, %sp ! alloca() space in stack for frame to set up
44 add %sp, STACKFRAME, %l0 ! %l0 has start of
47 mov %l0, %o0 ! call routine to set up frame
49 mov %i1, %o1 ! (delay)
51 ld [%l0+ARGS], %o0 ! call foreign function
58 mov %l0, %sp ! (delay) switch to frame
59 nop ! STRUCT returning functions skip 12 instead of 8 bytes
61 ! If the return value pointer is NULL, assume no return value.
68 st %o0, [%i4] ! (delay)
70 cmp %i3, FFI_TYPE_FLOAT
72 st %f0, [%i4+0] ! (delay)
74 cmp %i3, FFI_TYPE_SINT64
77 cmp %i3, FFI_TYPE_DOUBLE
95 .size ffi_call_V8,.ffi_call_V8_end-ffi_call_V8
98 #define STACKFRAME 104 /* 16*4 register window +
100 6*4 args backing store +
103 /* ffi_closure_v8(...)
105 Receives the closure argument in %g2. */
109 .globl ffi_closure_v8
112 #ifdef HAVE_AS_REGISTER_PSEUDO_OP
113 .register %g2, #scratch
116 save %sp, -STACKFRAME, %sp
119 ! Store all of the potential argument registers in va_list format.
127 ! Call ffi_closure_sparc_inner to do the bulk of the work.
131 call ffi_closure_sparc_inner
134 ! Load up the return value in the proper type.
135 cmp %o0, FFI_TYPE_VOID
138 cmp %o0, FFI_TYPE_FLOAT
142 cmp %o0, FFI_TYPE_DOUBLE
146 cmp %o0, FFI_TYPE_SINT64
150 cmp %o0, FFI_TYPE_UINT64
163 .size ffi_closure_v8,.ffi_closure_v8_end-ffi_closure_v8
168 #define uanword uaxword
172 #define uanword uaword
175 .section ".eh_frame",#alloc,#write
177 .uaword .LLECIE1-.LLSCIE1 ! Length of Common Information Entry
179 .uaword 0x0 ! CIE Identifier Tag
180 .byte 0x1 ! CIE Version
181 .ascii "zR\0" ! CIE Augmentation
182 .byte 0x1 ! uleb128 0x1; CIE Code Alignment Factor
183 .byte 0x80-WS ! sleb128 -WS; CIE Data Alignment Factor
184 .byte 0xf ! CIE RA Column
185 .byte 0x1 ! uleb128 0x1; Augmentation size
186 #ifdef HAVE_AS_SPARC_UA_PCREL
187 .byte 0x1b ! FDE Encoding (pcrel sdata4)
189 .byte 0x50 ! FDE Encoding (aligned absolute)
191 .byte 0xc ! DW_CFA_def_cfa
192 .byte 0xe ! uleb128 0xe
193 .byte 0x0 ! uleb128 0x0
197 .uaword .LLEFDE1-.LLASFDE1 ! FDE Length
199 .uaword .LLASFDE1-.LLframe1 ! FDE CIE offset
200 #ifdef HAVE_AS_SPARC_UA_PCREL
201 .uaword %r_disp32(.LLFB1)
202 .uaword .LLFE1-.LLFB1 ! FDE address range
206 .uanword .LLFE1-.LLFB1 ! FDE address range
208 .byte 0x0 ! uleb128 0x0; Augmentation size
209 .byte 0x4 ! DW_CFA_advance_loc4
210 .uaword .LLCFI0-.LLFB1
211 .byte 0xd ! DW_CFA_def_cfa_register
212 .byte 0x1e ! uleb128 0x1e
213 .byte 0x2d ! DW_CFA_GNU_window_save
214 .byte 0x9 ! DW_CFA_register
215 .byte 0xf ! uleb128 0xf
216 .byte 0x1f ! uleb128 0x1f
220 .uaword .LLEFDE2-.LLASFDE2 ! FDE Length
222 .uaword .LLASFDE2-.LLframe1 ! FDE CIE offset
223 #ifdef HAVE_AS_SPARC_UA_PCREL
224 .uaword %r_disp32(.LLFB2)
225 .uaword .LLFE2-.LLFB2 ! FDE address range
229 .uanword .LLFE2-.LLFB2 ! FDE address range
231 .byte 0x0 ! uleb128 0x0; Augmentation size
232 .byte 0x4 ! DW_CFA_advance_loc4
233 .uaword .LLCFI1-.LLFB2
234 .byte 0xd ! DW_CFA_def_cfa_register
235 .byte 0x1e ! uleb128 0x1e
236 .byte 0x2d ! DW_CFA_GNU_window_save
237 .byte 0x9 ! DW_CFA_register
238 .byte 0xf ! uleb128 0xf
239 .byte 0x1f ! uleb128 0x1f