--- /dev/null
+/* -----------------------------------------------------------------------
+ sysv.h - Copyright (c) 2003 Jakub Jelinek <jakub@redhat.com>
+ 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 <fficonfig.h>
+#include <ffi.h>
+
+ .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
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