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/* -----------------------------------------------------------------------
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darwin_closure.S - Copyright (c) 2002, 2003, 2004, Free Software Foundation,
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Inc. based on ppc_closure.S
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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``Software''), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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----------------------------------------------------------------------- */
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#if defined(__ppc64__)
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#define MODE_CHOICE(x, y) y
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#define MODE_CHOICE(x, y) x
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#define lgu MODE_CHOICE(lwzu, ldu)
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#define g_long MODE_CHOICE(long, quad) /* usage is ".g_long" */
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#define LOG2_GPR_BYTES MODE_CHOICE(2,3) /* log2(GPR_BYTES) */
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.file "darwin_closure.S"
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.globl _ffi_closure_ASM
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mflr r0 /* extract return address */
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stw r0,8(r1) /* save the return address */
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/* 24 Bytes (Linkage Area)
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32 Bytes (outgoing parameter area, always reserved)
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104 Bytes (13*8 from FPR)
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stwu r1,-176(r1) /* skip over caller save area
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keep stack aligned to 16. */
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/* We want to build up an area for the parameters passed
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in registers. (both floating point and integer) */
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/* We store gpr 3 to gpr 10 (aligned to 4)
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in the parents outgoing area. */
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/* We save fpr 1 to fpr 13. (aligned to 8) */
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/* Set up registers for the routine that actually does the work
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get the context pointer from the trampoline. */
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/* Now load up the pointer to the result storage. */
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/* Now load up the pointer to the saved gpr registers. */
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/* Now load up the pointer to the saved fpr registers. */
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bl Lffi_closure_helper_DARWIN$stub
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/* Now r3 contains the return type
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so use it to look up in a table
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so we know how to deal with each type. */
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/* Look up the proper starting point in table
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by using return type as offset. */
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addi r5,r1,160 /* Get pointer to results area. */
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bl Lget_ret_type0_addr /* Get pointer to Lret_type0 into LR. */
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mflr r4 /* Move to r4. */
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slwi r3,r3,4 /* Now multiply return type by 16. */
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add r3,r3,r4 /* Add contents of table to table address. */
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bctr /* Jump to it. */
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/* Each of the ret_typeX code fragments has to be exactly 16 bytes long
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(4 instructions). For cache effectiveness we align to a 16 byte boundary
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/* case FFI_TYPE_VOID */
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/* case FFI_TYPE_INT */
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/* case FFI_TYPE_FLOAT */
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/* case FFI_TYPE_DOUBLE */
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/* case FFI_TYPE_LONGDOUBLE */
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/* case FFI_TYPE_UINT8 */
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/* case FFI_TYPE_SINT8 */
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/* case FFI_TYPE_UINT16 */
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/* case FFI_TYPE_SINT16 */
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/* case FFI_TYPE_UINT32 */
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/* case FFI_TYPE_SINT32 */
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/* case FFI_TYPE_UINT64 */
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/* case FFI_TYPE_SINT64 */
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/* case FFI_TYPE_STRUCT */
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/* case FFI_TYPE_POINTER */
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addi r1,r1,176 /* Restore stack pointer. */
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lwz r0,8(r1) /* Get return address. */
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mtlr r0 /* Reset link register. */
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/* END(ffi_closure_ASM) */
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.section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support
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.set L$set$0,LECIE1-LSCIE1
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.long L$set$0 ; Length of Common Information Entry
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.long 0x0 ; CIE Identifier Tag
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.byte 0x1 ; CIE Version
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.ascii "zR\0" ; CIE Augmentation
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.byte 0x1 ; uleb128 0x1; CIE Code Alignment Factor
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.byte 0x7c ; sleb128 -4; CIE Data Alignment Factor
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.byte 0x41 ; CIE RA Column
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.byte 0x1 ; uleb128 0x1; Augmentation size
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.byte 0x90 ; FDE Encoding (indirect pcrel)
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.byte 0xc ; DW_CFA_def_cfa
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.byte 0x1 ; uleb128 0x1
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.byte 0x0 ; uleb128 0x0
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.align LOG2_GPR_BYTES
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.globl _ffi_closure_ASM.eh
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.set L$set$1,LEFDE1-LASFDE1
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.long L$set$1 ; FDE Length
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.long LASFDE1-EH_frame1 ; FDE CIE offset
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.g_long LLFB1$non_lazy_ptr-. ; FDE initial location
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.set L$set$3,LFE1-LFB1
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.g_long L$set$3 ; FDE address range
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.byte 0x0 ; uleb128 0x0; Augmentation size
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.byte 0x4 ; DW_CFA_advance_loc4
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.set L$set$3,LCFI1-LCFI0
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.byte 0xe ; DW_CFA_def_cfa_offset
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.byte 176,1 ; uleb128 176
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.byte 0x4 ; DW_CFA_advance_loc4
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.set L$set$4,LCFI0-LFB1
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.byte 0x11 ; DW_CFA_offset_extended_sf
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.byte 0x41 ; uleb128 0x41
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.byte 0x7e ; sleb128 -2
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.align LOG2_GPR_BYTES
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.align LOG2_GPR_BYTES
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.section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
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.align LOG2_GPR_BYTES
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Lffi_closure_helper_DARWIN$stub:
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.indirect_symbol _ffi_closure_helper_DARWIN
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bcl 20,31,LO$ffi_closure_helper_DARWIN
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LO$ffi_closure_helper_DARWIN:
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addis r11,r11,ha16(L_ffi_closure_helper_DARWIN$lazy_ptr - LO$ffi_closure_helper_DARWIN)
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lgu r12,lo16(L_ffi_closure_helper_DARWIN$lazy_ptr - LO$ffi_closure_helper_DARWIN)(r11)
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L_ffi_closure_helper_DARWIN$lazy_ptr:
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.indirect_symbol _ffi_closure_helper_DARWIN
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.g_long dyld_stub_binding_helper
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.align LOG2_GPR_BYTES
added
removed
libffi/src/powerpc/darwin_closure.S
