1#if defined(__ppc__) 2 3/* ----------------------------------------------------------------------- 4 darwin_closure.S - Copyright (c) 2002, 2003, 2004, Free Software Foundation, 5 Inc. based on ppc_closure.S 6 7 PowerPC Assembly glue. 8 9 Permission is hereby granted, free of charge, to any person obtaining 10 a copy of this software and associated documentation files (the 11 ``Software''), to deal in the Software without restriction, including 12 without limitation the rights to use, copy, modify, merge, publish, 13 distribute, sublicense, and/or sell copies of the Software, and to 14 permit persons to whom the Software is furnished to do so, subject to 15 the following conditions: 16 17 The above copyright notice and this permission notice shall be included 18 in all copies or substantial portions of the Software. 19 20 THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS 21 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 23 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR 24 OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 25 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 26 OTHER DEALINGS IN THE SOFTWARE. 27 ----------------------------------------------------------------------- */ 28 29#define LIBFFI_ASM 30 31#include <ffi.h> 32#include <ppc-ffitarget.h> // for FFI_TRAMPOLINE_SIZE 33#include <ppc-darwin.h> 34#include <architecture/ppc/mode_independent_asm.h> 35 36 .file "ppc-darwin_closure.S" 37.text 38 .align LOG2_GPR_BYTES 39 .globl _ffi_closure_ASM 40 41.text 42 .align LOG2_GPR_BYTES 43 44_ffi_closure_ASM: 45LFB1: 46 mflr r0 /* extract return address */ 47 stg r0,MODE_CHOICE(8,16)(r1) /* save return address */ 48 49LCFI0: 50 /* 24/48 bytes (Linkage Area) 51 32/64 bytes (outgoing parameter area, always reserved) 52 104 bytes (13*8 from FPR) 53 16/32 bytes (result) 54 176/232 total bytes */ 55 56 /* skip over caller save area and keep stack aligned to 16/32. */ 57 stgu r1,-SF_ROUND(MODE_CHOICE(176,248))(r1) 58 59LCFI1: 60 /* We want to build up an area for the parameters passed 61 in registers. (both floating point and integer) */ 62 63 /* 176/256 bytes (callee stack frame aligned to 16/32) 64 24/48 bytes (caller linkage area) 65 200/304 (start of caller parameter area aligned to 4/8) 66 */ 67 68 /* Save GPRs 3 - 10 (aligned to 4/8) 69 in the parents outgoing area. */ 70 stg r3,MODE_CHOICE(200,304)(r1) 71 stg r4,MODE_CHOICE(204,312)(r1) 72 stg r5,MODE_CHOICE(208,320)(r1) 73 stg r6,MODE_CHOICE(212,328)(r1) 74 stg r7,MODE_CHOICE(216,336)(r1) 75 stg r8,MODE_CHOICE(220,344)(r1) 76 stg r9,MODE_CHOICE(224,352)(r1) 77 stg r10,MODE_CHOICE(228,360)(r1) 78 79 /* Save FPRs 1 - 13. (aligned to 8) */ 80 stfd f1,MODE_CHOICE(56,112)(r1) 81 stfd f2,MODE_CHOICE(64,120)(r1) 82 stfd f3,MODE_CHOICE(72,128)(r1) 83 stfd f4,MODE_CHOICE(80,136)(r1) 84 stfd f5,MODE_CHOICE(88,144)(r1) 85 stfd f6,MODE_CHOICE(96,152)(r1) 86 stfd f7,MODE_CHOICE(104,160)(r1) 87 stfd f8,MODE_CHOICE(112,168)(r1) 88 stfd f9,MODE_CHOICE(120,176)(r1) 89 stfd f10,MODE_CHOICE(128,184)(r1) 90 stfd f11,MODE_CHOICE(136,192)(r1) 91 stfd f12,MODE_CHOICE(144,200)(r1) 92 stfd f13,MODE_CHOICE(152,208)(r1) 93 94 /* Set up registers for the routine that actually does the work. 95 Get the context pointer from the trampoline. */ 96 mr r3,r11 97 98 /* Load the pointer to the result storage. */ 99 /* current stack frame size - ((4/8 * 4) + saved registers) */ 100 addi r4,r1,MODE_CHOICE(160,216) 101 102 /* Load the pointer to the saved gpr registers. */ 103 addi r5,r1,MODE_CHOICE(200,304) 104 105 /* Load the pointer to the saved fpr registers. */ 106 addi r6,r1,MODE_CHOICE(56,112) 107 108 /* Make the call. */ 109 bl Lffi_closure_helper_DARWIN$stub 110 111 /* Now r3 contains the return type 112 so use it to look up in a table 113 so we know how to deal with each type. */ 114 115 /* Look the proper starting point in table 116 by using return type as offset. */ 117 addi r5,r1,MODE_CHOICE(160,216) // Get pointer to results area. 118 bl Lget_ret_type0_addr // Get pointer to Lret_type0 into LR. 119 mflr r4 // Move to r4. 120 slwi r3,r3,4 // Now multiply return type by 16. 121 add r3,r3,r4 // Add contents of table to table address. 122 mtctr r3 123 bctr 124 125LFE1: 126/* Each of the ret_typeX code fragments has to be exactly 16 bytes long 127 (4 instructions). For cache effectiveness we align to a 16 byte boundary 128 first. */ 129 .align 4 130 nop 131 nop 132 nop 133 134Lget_ret_type0_addr: 135 blrl 136 137/* case FFI_TYPE_VOID */ 138Lret_type0: 139 b Lfinish 140 nop 141 nop 142 nop 143 144/* case FFI_TYPE_INT */ 145Lret_type1: 146 lwz r3,MODE_CHOICE(0,4)(r5) 147 b Lfinish 148 nop 149 nop 150 151/* case FFI_TYPE_FLOAT */ 152Lret_type2: 153 lfs f1,0(r5) 154 b Lfinish 155 nop 156 nop 157 158/* case FFI_TYPE_DOUBLE */ 159Lret_type3: 160 lfd f1,0(r5) 161 b Lfinish 162 nop 163 nop 164 165/* case FFI_TYPE_LONGDOUBLE */ 166Lret_type4: 167 lfd f1,0(r5) 168 lfd f2,8(r5) 169 b Lfinish 170 nop 171 172/* case FFI_TYPE_UINT8 */ 173Lret_type5: 174 lbz r3,MODE_CHOICE(3,7)(r5) 175 b Lfinish 176 nop 177 nop 178 179/* case FFI_TYPE_SINT8 */ 180Lret_type6: 181 lbz r3,MODE_CHOICE(3,7)(r5) 182 extsb r3,r3 183 b Lfinish 184 nop 185 186/* case FFI_TYPE_UINT16 */ 187Lret_type7: 188 lhz r3,MODE_CHOICE(2,6)(r5) 189 b Lfinish 190 nop 191 nop 192 193/* case FFI_TYPE_SINT16 */ 194Lret_type8: 195 lha r3,MODE_CHOICE(2,6)(r5) 196 b Lfinish 197 nop 198 nop 199 200/* case FFI_TYPE_UINT32 */ 201Lret_type9: // same as Lret_type1 202 lwz r3,MODE_CHOICE(0,4)(r5) 203 b Lfinish 204 nop 205 nop 206 207/* case FFI_TYPE_SINT32 */ 208Lret_type10: // same as Lret_type1 209 lwz r3,MODE_CHOICE(0,4)(r5) 210 b Lfinish 211 nop 212 nop 213 214/* case FFI_TYPE_UINT64 */ 215Lret_type11: 216 lwz r3,0(r5) 217 lwz r4,4(r5) 218 b Lfinish 219 nop 220 221/* case FFI_TYPE_SINT64 */ 222Lret_type12: // same as Lret_type11 223 lwz r3,0(r5) 224 lwz r4,4(r5) 225 b Lfinish 226 nop 227 228/* case FFI_TYPE_STRUCT */ 229Lret_type13: 230 b MODE_CHOICE(Lfinish,Lret_struct) 231 nop 232 nop 233 nop 234 235/* End 16-byte aligned cases */ 236/* case FFI_TYPE_POINTER */ 237// This case assumes that FFI_TYPE_POINTER == FFI_TYPE_LAST. If more types 238// are added in future, the following code will need to be updated and 239// padded to 16 bytes. 240Lret_type14: 241 lg r3,0(r5) 242 243/* case done */ 244Lfinish: 245 addi r1,r1,SF_ROUND(MODE_CHOICE(176,248)) // Restore stack pointer. 246 lg r0,MODE_CHOICE(8,16)(r1) /* Get return address. */ 247 mtlr r0 /* Reset link register. */ 248 blr 249 250/* END(ffi_closure_ASM) */ 251 252.section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support 253EH_frame1: 254 .set L$set$0,LECIE1-LSCIE1 255 .long L$set$0 ; Length of Common Information Entry 256LSCIE1: 257 .long 0x0 ; CIE Identifier Tag 258 .byte 0x1 ; CIE Version 259 .ascii "zR\0" ; CIE Augmentation 260 .byte 0x1 ; uleb128 0x1; CIE Code Alignment Factor 261 .byte 0x7c ; sleb128 -4; CIE Data Alignment Factor 262 .byte 0x41 ; CIE RA Column 263 .byte 0x1 ; uleb128 0x1; Augmentation size 264 .byte 0x90 ; FDE Encoding (indirect pcrel) 265 .byte 0xc ; DW_CFA_def_cfa 266 .byte 0x1 ; uleb128 0x1 267 .byte 0x0 ; uleb128 0x0 268 .align LOG2_GPR_BYTES 269LECIE1: 270.globl _ffi_closure_ASM.eh 271_ffi_closure_ASM.eh: 272LSFDE1: 273 .set L$set$1,LEFDE1-LASFDE1 274 .long L$set$1 ; FDE Length 275 276LASFDE1: 277 .long LASFDE1-EH_frame1 ; FDE CIE offset 278 .g_long LLFB1$non_lazy_ptr-. ; FDE initial location 279 .set L$set$3,LFE1-LFB1 280 .g_long L$set$3 ; FDE address range 281 .byte 0x0 ; uleb128 0x0; Augmentation size 282 .byte 0x4 ; DW_CFA_advance_loc4 283 .set L$set$3,LCFI1-LCFI0 284 .long L$set$3 285 .byte 0xe ; DW_CFA_def_cfa_offset 286 .byte 176,1 ; uleb128 176 287 .byte 0x4 ; DW_CFA_advance_loc4 288 .set L$set$4,LCFI0-LFB1 289 .long L$set$4 290 .byte 0x11 ; DW_CFA_offset_extended_sf 291 .byte 0x41 ; uleb128 0x41 292 .byte 0x7e ; sleb128 -2 293 .align LOG2_GPR_BYTES 294 295LEFDE1: 296.data 297 .align LOG2_GPR_BYTES 298LDFCM0: 299.section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32 300 .align LOG2_GPR_BYTES 301 302Lffi_closure_helper_DARWIN$stub: 303 .indirect_symbol _ffi_closure_helper_DARWIN 304 mflr r0 305 bcl 20,31,LO$ffi_closure_helper_DARWIN 306 307LO$ffi_closure_helper_DARWIN: 308 mflr r11 309 addis r11,r11,ha16(L_ffi_closure_helper_DARWIN$lazy_ptr - LO$ffi_closure_helper_DARWIN) 310 mtlr r0 311 lgu r12,lo16(L_ffi_closure_helper_DARWIN$lazy_ptr - LO$ffi_closure_helper_DARWIN)(r11) 312 mtctr r12 313 bctr 314 315.lazy_symbol_pointer 316L_ffi_closure_helper_DARWIN$lazy_ptr: 317 .indirect_symbol _ffi_closure_helper_DARWIN 318 .g_long dyld_stub_binding_helper 319 320.data 321 .align LOG2_GPR_BYTES 322LLFB1$non_lazy_ptr: 323 .g_long LFB1 324 325#endif // __ppc__ 326