/* ----------------------------------------------------------------------- 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) .globl ffi_closure_LINUX64 # if _CALL_ELF == 2 .text ffi_closure_LINUX64: addis %r2, %r12, .TOC.-ffi_closure_LINUX64@ha addi %r2, %r2, .TOC.-ffi_closure_LINUX64@l .localentry ffi_closure_LINUX64, . - ffi_closure_LINUX64 # else .section ".opd","aw" .align 3 ffi_closure_LINUX64: # ifdef _CALL_LINUX .quad .L.ffi_closure_LINUX64,.TOC.@tocbase,0 .type ffi_closure_LINUX64,@function .text .L.ffi_closure_LINUX64: # else FFI_HIDDEN (.ffi_closure_LINUX64) .globl .ffi_closure_LINUX64 .quad .ffi_closure_LINUX64,.TOC.@tocbase,0 .size ffi_closure_LINUX64,24 .type .ffi_closure_LINUX64,@function .text .ffi_closure_LINUX64: # endif # endif # if _CALL_ELF == 2 # 32 byte special reg save area + 64 byte parm save area # + 64 byte retval area + 13*8 fpr save area + round to 16 # define STACKFRAME 272 # define PARMSAVE 32 # define RETVAL PARMSAVE+64 # else # 48 bytes special reg save area + 64 bytes parm save area # + 16 bytes retval area + 13*8 bytes fpr save area + round to 16 # define STACKFRAME 240 # define PARMSAVE 48 # define RETVAL PARMSAVE+64 # endif .LFB1: # if _CALL_ELF == 2 ld %r12, FFI_TRAMPOLINE_SIZE(%r11) # closure->cif mflr %r0 lwz %r12, 28(%r12) # cif->flags mtcrf 0x40, %r12 addi %r12, %r1, PARMSAVE bt 7, .Lparmsave # Our caller has not allocated a parameter save area. # We need to allocate one here and use it to pass gprs to # ffi_closure_helper_LINUX64. addi %r12, %r1, -STACKFRAME+PARMSAVE .Lparmsave: std %r0, 16(%r1) # Save general regs into parm save area std %r3, 0(%r12) std %r4, 8(%r12) std %r5, 16(%r12) std %r6, 24(%r12) std %r7, 32(%r12) std %r8, 40(%r12) std %r9, 48(%r12) std %r10, 56(%r12) # load up the pointer to the parm save area mr %r5, %r12 # else # copy r2 to r11 and load TOC into r2 mr %r11, %r2 ld %r2, 16(%r11) mflr %r0 # Save general regs into parm save area # This is the parameter save area set up by our caller. std %r3, PARMSAVE+0(%r1) std %r4, PARMSAVE+8(%r1) std %r5, PARMSAVE+16(%r1) std %r6, PARMSAVE+24(%r1) std %r7, PARMSAVE+32(%r1) std %r8, PARMSAVE+40(%r1) std %r9, PARMSAVE+48(%r1) std %r10, PARMSAVE+56(%r1) std %r0, 16(%r1) # load up the pointer to the parm save area addi %r5, %r1, PARMSAVE # endif # next save fpr 1 to fpr 13 stfd %f1, -104+(0*8)(%r1) stfd %f2, -104+(1*8)(%r1) stfd %f3, -104+(2*8)(%r1) stfd %f4, -104+(3*8)(%r1) stfd %f5, -104+(4*8)(%r1) stfd %f6, -104+(5*8)(%r1) stfd %f7, -104+(6*8)(%r1) stfd %f8, -104+(7*8)(%r1) stfd %f9, -104+(8*8)(%r1) stfd %f10, -104+(9*8)(%r1) stfd %f11, -104+(10*8)(%r1) stfd %f12, -104+(11*8)(%r1) stfd %f13, -104+(12*8)(%r1) # load up the pointer to the saved fpr registers */ addi %r6, %r1, -104 # load up the pointer to the result storage addi %r4, %r1, -STACKFRAME+RETVAL stdu %r1, -STACKFRAME(%r1) .LCFI0: # get the context pointer from the trampoline mr %r3, %r11 # make the call # if defined _CALL_LINUX || _CALL_ELF == 2 bl ffi_closure_helper_LINUX64 # else bl .ffi_closure_helper_LINUX64 # endif .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 ld %r0, STACKFRAME+16(%r1) cmpldi %r3, FFI_V2_TYPE_SMALL_STRUCT bge .Lsmall mflr %r4 # move address of .Lret to r4 sldi %r3, %r3, 4 # now multiply return type by 16 addi %r4, %r4, .Lret_type0 - .Lret 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, STACKFRAME blr nop # case FFI_TYPE_INT # ifdef __LITTLE_ENDIAN__ lwa %r3, RETVAL+0(%r1) # else lwa %r3, RETVAL+4(%r1) # endif mtlr %r0 addi %r1, %r1, STACKFRAME blr # case FFI_TYPE_FLOAT lfs %f1, RETVAL+0(%r1) mtlr %r0 addi %r1, %r1, STACKFRAME blr # case FFI_TYPE_DOUBLE lfd %f1, RETVAL+0(%r1) mtlr %r0 addi %r1, %r1, STACKFRAME blr # case FFI_TYPE_LONGDOUBLE lfd %f1, RETVAL+0(%r1) mtlr %r0 lfd %f2, RETVAL+8(%r1) b .Lfinish # case FFI_TYPE_UINT8 # ifdef __LITTLE_ENDIAN__ lbz %r3, RETVAL+0(%r1) # else lbz %r3, RETVAL+7(%r1) # endif mtlr %r0 addi %r1, %r1, STACKFRAME blr # case FFI_TYPE_SINT8 # ifdef __LITTLE_ENDIAN__ lbz %r3, RETVAL+0(%r1) # else lbz %r3, RETVAL+7(%r1) # endif extsb %r3,%r3 mtlr %r0 b .Lfinish # case FFI_TYPE_UINT16 # ifdef __LITTLE_ENDIAN__ lhz %r3, RETVAL+0(%r1) # else lhz %r3, RETVAL+6(%r1) # endif mtlr %r0 .Lfinish: addi %r1, %r1, STACKFRAME blr # case FFI_TYPE_SINT16 # ifdef __LITTLE_ENDIAN__ lha %r3, RETVAL+0(%r1) # else lha %r3, RETVAL+6(%r1) # endif mtlr %r0 addi %r1, %r1, STACKFRAME blr # case FFI_TYPE_UINT32 # ifdef __LITTLE_ENDIAN__ lwz %r3, RETVAL+0(%r1) # else lwz %r3, RETVAL+4(%r1) # endif mtlr %r0 addi %r1, %r1, STACKFRAME blr # case FFI_TYPE_SINT32 # ifdef __LITTLE_ENDIAN__ lwa %r3, RETVAL+0(%r1) # else lwa %r3, RETVAL+4(%r1) # endif mtlr %r0 addi %r1, %r1, STACKFRAME blr # case FFI_TYPE_UINT64 ld %r3, RETVAL+0(%r1) mtlr %r0 addi %r1, %r1, STACKFRAME blr # case FFI_TYPE_SINT64 ld %r3, RETVAL+0(%r1) mtlr %r0 addi %r1, %r1, STACKFRAME blr # case FFI_TYPE_STRUCT mtlr %r0 addi %r1, %r1, STACKFRAME blr nop # case FFI_TYPE_POINTER ld %r3, RETVAL+0(%r1) mtlr %r0 addi %r1, %r1, STACKFRAME blr # case FFI_V2_TYPE_FLOAT_HOMOG lfs %f1, RETVAL+0(%r1) lfs %f2, RETVAL+4(%r1) lfs %f3, RETVAL+8(%r1) b .Lmorefloat # case FFI_V2_TYPE_DOUBLE_HOMOG lfd %f1, RETVAL+0(%r1) lfd %f2, RETVAL+8(%r1) lfd %f3, RETVAL+16(%r1) lfd %f4, RETVAL+24(%r1) mtlr %r0 lfd %f5, RETVAL+32(%r1) lfd %f6, RETVAL+40(%r1) lfd %f7, RETVAL+48(%r1) lfd %f8, RETVAL+56(%r1) addi %r1, %r1, STACKFRAME blr .Lmorefloat: lfs %f4, RETVAL+12(%r1) mtlr %r0 lfs %f5, RETVAL+16(%r1) lfs %f6, RETVAL+20(%r1) lfs %f7, RETVAL+24(%r1) lfs %f8, RETVAL+28(%r1) addi %r1, %r1, STACKFRAME blr .Lsmall: # ifdef __LITTLE_ENDIAN__ ld %r3,RETVAL+0(%r1) mtlr %r0 ld %r4,RETVAL+8(%r1) addi %r1, %r1, STACKFRAME blr # else # A struct smaller than a dword is returned in the low bits of r3 # ie. right justified. Larger structs are passed left justified # in r3 and r4. The return value area on the stack will have # the structs as they are usually stored in memory. cmpldi %r3, FFI_V2_TYPE_SMALL_STRUCT + 7 # size 8 bytes? neg %r5, %r3 ld %r3,RETVAL+0(%r1) blt .Lsmalldown mtlr %r0 ld %r4,RETVAL+8(%r1) addi %r1, %r1, STACKFRAME blr .Lsmalldown: addi %r5, %r5, FFI_V2_TYPE_SMALL_STRUCT + 7 mtlr %r0 sldi %r5, %r5, 3 addi %r1, %r1, STACKFRAME srd %r3, %r3, %r5 blr # endif .LFE1: .long 0 .byte 0,12,0,1,128,0,0,0 # if _CALL_ELF == 2 .size ffi_closure_LINUX64,.-ffi_closure_LINUX64 # else # ifdef _CALL_LINUX .size ffi_closure_LINUX64,.-.L.ffi_closure_LINUX64 # else .size .ffi_closure_LINUX64,.-.ffi_closure_LINUX64 # endif # endif .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 STACKFRAME .byte 0x11 # DW_CFA_offset_extended_sf .uleb128 0x41 .sleb128 -2 .align 3 .LEFDE1: # if defined __ELF__ && defined __linux__ .section .note.GNU-stack,"",@progbits # endif #endif