#define LIBFFI_ASM #include <fficonfig.h> #include <ffi.h> .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