/* ----------------------------------------------------------------------- sysv.h - Copyright (c) 2003 Jakub Jelinek Copyright (c) 2008 Red Hat, Inc. PowerPC64 Assembly glue. 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 AUTHORS OR COPYRIGHT HOLDERS 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 #include .file "linux64_closure.S" #ifdef __powerpc64__ FFI_HIDDEN (ffi_closure_LINUX64) FFI_HIDDEN (.ffi_closure_LINUX64) .globl ffi_closure_LINUX64, .ffi_closure_LINUX64 .section ".opd","aw" .align 3 ffi_closure_LINUX64: .quad .ffi_closure_LINUX64,.TOC.@tocbase,0 .size ffi_closure_LINUX64,24 .type .ffi_closure_LINUX64,@function .text .ffi_closure_LINUX64: .LFB1: # save general regs into parm save area std %r3, 48(%r1) std %r4, 56(%r1) std %r5, 64(%r1) std %r6, 72(%r1) mflr %r0 std %r7, 80(%r1) std %r8, 88(%r1) std %r9, 96(%r1) std %r10, 104(%r1) std %r0, 16(%r1) # mandatory 48 bytes special reg save area + 64 bytes parm save area # + 16 bytes retval area + 13*8 bytes fpr save area + round to 16 stdu %r1, -240(%r1) .LCFI0: # next save fpr 1 to fpr 13 stfd %f1, 128+(0*8)(%r1) stfd %f2, 128+(1*8)(%r1) stfd %f3, 128+(2*8)(%r1) stfd %f4, 128+(3*8)(%r1) stfd %f5, 128+(4*8)(%r1) stfd %f6, 128+(5*8)(%r1) stfd %f7, 128+(6*8)(%r1) stfd %f8, 128+(7*8)(%r1) stfd %f9, 128+(8*8)(%r1) stfd %f10, 128+(9*8)(%r1) stfd %f11, 128+(10*8)(%r1) stfd %f12, 128+(11*8)(%r1) stfd %f13, 128+(12*8)(%r1) # set up registers for the routine that actually does the work # get the context pointer from the trampoline mr %r3, %r11 # now load up the pointer to the result storage addi %r4, %r1, 112 # now load up the pointer to the parameter save area # in the previous frame addi %r5, %r1, 240 + 48 # now load up the pointer to the saved fpr registers */ addi %r6, %r1, 128 # make the call bl .ffi_closure_helper_LINUX64 .Lret: # now r3 contains the return type # so use it to look up in a table # so we know how to deal with each type # look up the proper starting point in table # by using return type as offset mflr %r4 # move address of .Lret to r4 sldi %r3, %r3, 4 # now multiply return type by 16 addi %r4, %r4, .Lret_type0 - .Lret ld %r0, 240+16(%r1) add %r3, %r3, %r4 # add contents of table to table address mtctr %r3 bctr # jump to it # Each of the ret_typeX code fragments has to be exactly 16 bytes long # (4 instructions). For cache effectiveness we align to a 16 byte boundary # first. .align 4 .Lret_type0: # case FFI_TYPE_VOID mtlr %r0 addi %r1, %r1, 240 blr nop # case FFI_TYPE_INT lwa %r3, 112+4(%r1) mtlr %r0 addi %r1, %r1, 240 blr # case FFI_TYPE_FLOAT lfs %f1, 112+0(%r1) mtlr %r0 addi %r1, %r1, 240 blr # case FFI_TYPE_DOUBLE lfd %f1, 112+0(%r1) mtlr %r0 addi %r1, %r1, 240 blr # case FFI_TYPE_LONGDOUBLE lfd %f1, 112+0(%r1) mtlr %r0 lfd %f2, 112+8(%r1) b .Lfinish # case FFI_TYPE_UINT8 lbz %r3, 112+7(%r1) mtlr %r0 addi %r1, %r1, 240 blr # case FFI_TYPE_SINT8 lbz %r3, 112+7(%r1) extsb %r3,%r3 mtlr %r0 b .Lfinish # case FFI_TYPE_UINT16 lhz %r3, 112+6(%r1) mtlr %r0 .Lfinish: addi %r1, %r1, 240 blr # case FFI_TYPE_SINT16 lha %r3, 112+6(%r1) mtlr %r0 addi %r1, %r1, 240 blr # case FFI_TYPE_UINT32 lwz %r3, 112+4(%r1) mtlr %r0 addi %r1, %r1, 240 blr # case FFI_TYPE_SINT32 lwa %r3, 112+4(%r1) mtlr %r0 addi %r1, %r1, 240 blr # case FFI_TYPE_UINT64 ld %r3, 112+0(%r1) mtlr %r0 addi %r1, %r1, 240 blr # case FFI_TYPE_SINT64 ld %r3, 112+0(%r1) mtlr %r0 addi %r1, %r1, 240 blr # case FFI_TYPE_STRUCT mtlr %r0 addi %r1, %r1, 240 blr nop # case FFI_TYPE_POINTER ld %r3, 112+0(%r1) mtlr %r0 addi %r1, %r1, 240 blr # esac .LFE1: .long 0 .byte 0,12,0,1,128,0,0,0 .size .ffi_closure_LINUX64,.-.ffi_closure_LINUX64 .section .eh_frame,EH_FRAME_FLAGS,@progbits .Lframe1: .4byte .LECIE1-.LSCIE1 # Length of Common Information Entry .LSCIE1: .4byte 0x0 # CIE Identifier Tag .byte 0x1 # CIE Version .ascii "zR\0" # CIE Augmentation .uleb128 0x1 # CIE Code Alignment Factor .sleb128 -8 # CIE Data Alignment Factor .byte 0x41 # CIE RA Column .uleb128 0x1 # Augmentation size .byte 0x14 # FDE Encoding (pcrel udata8) .byte 0xc # DW_CFA_def_cfa .uleb128 0x1 .uleb128 0x0 .align 3 .LECIE1: .LSFDE1: .4byte .LEFDE1-.LASFDE1 # FDE Length .LASFDE1: .4byte .LASFDE1-.Lframe1 # FDE CIE offset .8byte .LFB1-. # FDE initial location .8byte .LFE1-.LFB1 # FDE address range .uleb128 0x0 # Augmentation size .byte 0x2 # DW_CFA_advance_loc1 .byte .LCFI0-.LFB1 .byte 0xe # DW_CFA_def_cfa_offset .uleb128 240 .byte 0x11 # DW_CFA_offset_extended_sf .uleb128 0x41 .sleb128 -2 .align 3 .LEFDE1: #endif #if defined __ELF__ && defined __linux__ .section .note.GNU-stack,"",@progbits #endif