/* ----------------------------------------------------------------------- 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> #ifdef POWERPC64 .hidden ffi_call_LINUX64 .globl ffi_call_LINUX64 # if _CALL_ELF == 2 .text ffi_call_LINUX64: addis %r2, %r12, .TOC.-ffi_call_LINUX64@ha addi %r2, %r2, .TOC.-ffi_call_LINUX64@l .localentry ffi_call_LINUX64, . - ffi_call_LINUX64 # else .section ".opd","aw" .align 3 ffi_call_LINUX64: # ifdef _CALL_LINUX .quad .L.ffi_call_LINUX64,.TOC.@tocbase,0 .type ffi_call_LINUX64,@function .text .L.ffi_call_LINUX64: # else .hidden .ffi_call_LINUX64 .globl .ffi_call_LINUX64 .quad .ffi_call_LINUX64,.TOC.@tocbase,0 .size ffi_call_LINUX64,24 .type .ffi_call_LINUX64,@function .text .ffi_call_LINUX64: # endif # endif .LFB1: mflr %r0 std %r28, -32(%r1) std %r29, -24(%r1) std %r30, -16(%r1) std %r31, -8(%r1) std %r0, 16(%r1) mr %r28, %r1 /* our AP. */ .LCFI0: stdux %r1, %r1, %r4 mr %r31, %r5 /* flags, */ mr %r30, %r6 /* rvalue, */ mr %r29, %r7 /* function address. */ /* Save toc pointer, not for the ffi_prep_args64 call, but for the later bctrl function call. */ # if _CALL_ELF == 2 std %r2, 24(%r1) # else std %r2, 40(%r1) # endif /* Call ffi_prep_args64. */ mr %r4, %r1 # if defined _CALL_LINUX || _CALL_ELF == 2 bl ffi_prep_args64 # else bl .ffi_prep_args64 # endif # if _CALL_ELF == 2 mr %r12, %r29 # else ld %r12, 0(%r29) ld %r2, 8(%r29) ld %r11, 16(%r29) # endif /* Now do the call. */ /* Set up cr1 with bits 4-7 of the flags. */ mtcrf 0x40, %r31 /* Get the address to call into CTR. */ mtctr %r12 /* Load all those argument registers. */ ld %r3, -32-(8*8)(%r28) ld %r4, -32-(7*8)(%r28) ld %r5, -32-(6*8)(%r28) ld %r6, -32-(5*8)(%r28) bf- 5, 1f ld %r7, -32-(4*8)(%r28) ld %r8, -32-(3*8)(%r28) ld %r9, -32-(2*8)(%r28) ld %r10, -32-(1*8)(%r28) 1: /* Load all the FP registers. */ bf- 6, 2f lfd %f1, -32-(21*8)(%r28) lfd %f2, -32-(20*8)(%r28) lfd %f3, -32-(19*8)(%r28) lfd %f4, -32-(18*8)(%r28) lfd %f5, -32-(17*8)(%r28) lfd %f6, -32-(16*8)(%r28) lfd %f7, -32-(15*8)(%r28) lfd %f8, -32-(14*8)(%r28) lfd %f9, -32-(13*8)(%r28) lfd %f10, -32-(12*8)(%r28) lfd %f11, -32-(11*8)(%r28) lfd %f12, -32-(10*8)(%r28) lfd %f13, -32-(9*8)(%r28) 2: /* Make the call. */ bctrl /* This must follow the call immediately, the unwinder uses this to find out if r2 has been saved or not. */ # if _CALL_ELF == 2 ld %r2, 24(%r1) # else ld %r2, 40(%r1) # endif /* Now, deal with the return value. */ mtcrf 0x01, %r31 bt 31, .Lstruct_return_value bt 30, .Ldone_return_value bt 29, .Lfp_return_value std %r3, 0(%r30) /* Fall through... */ .Ldone_return_value: /* Restore the registers we used and return. */ mr %r1, %r28 ld %r0, 16(%r28) ld %r28, -32(%r28) mtlr %r0 ld %r29, -24(%r1) ld %r30, -16(%r1) ld %r31, -8(%r1) blr .Lfp_return_value: bf 28, .Lfloat_return_value stfd %f1, 0(%r30) mtcrf 0x02, %r31 /* cr6 */ bf 27, .Ldone_return_value stfd %f2, 8(%r30) b .Ldone_return_value .Lfloat_return_value: stfs %f1, 0(%r30) b .Ldone_return_value .Lstruct_return_value: bf 29, .Lsmall_struct bf 28, .Lfloat_homog_return_value stfd %f1, 0(%r30) stfd %f2, 8(%r30) stfd %f3, 16(%r30) stfd %f4, 24(%r30) stfd %f5, 32(%r30) stfd %f6, 40(%r30) stfd %f7, 48(%r30) stfd %f8, 56(%r30) b .Ldone_return_value .Lfloat_homog_return_value: stfs %f1, 0(%r30) stfs %f2, 4(%r30) stfs %f3, 8(%r30) stfs %f4, 12(%r30) stfs %f5, 16(%r30) stfs %f6, 20(%r30) stfs %f7, 24(%r30) stfs %f8, 28(%r30) b .Ldone_return_value .Lsmall_struct: std %r3, 0(%r30) std %r4, 8(%r30) b .Ldone_return_value .LFE1: .long 0 .byte 0,12,0,1,128,4,0,0 # if _CALL_ELF == 2 .size ffi_call_LINUX64,.-ffi_call_LINUX64 # else # ifdef _CALL_LINUX .size ffi_call_LINUX64,.-.L.ffi_call_LINUX64 # else .size .ffi_call_LINUX64,.-.ffi_call_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 0xd # DW_CFA_def_cfa_register .uleb128 0x1c .byte 0x11 # DW_CFA_offset_extended_sf .uleb128 0x41 .sleb128 -2 .byte 0x9f # DW_CFA_offset, column 0x1f .uleb128 0x1 .byte 0x9e # DW_CFA_offset, column 0x1e .uleb128 0x2 .byte 0x9d # DW_CFA_offset, column 0x1d .uleb128 0x3 .byte 0x9c # DW_CFA_offset, column 0x1c .uleb128 0x4 .align 3 .LEFDE1: #endif #if (defined __ELF__ && defined __linux__) || _CALL_ELF == 2 .section .note.GNU-stack,"",@progbits #endif