1 /* ----------------------------------------------------------------------- 2 sysv.h - Copyright (c) 2003 Jakub Jelinek <jakub (at) redhat.com> 3 Copyright (c) 2008 Red Hat, Inc. 4 5 PowerPC64 Assembly glue. 6 7 Permission is hereby granted, free of charge, to any person obtaining 8 a copy of this software and associated documentation files (the 9 ``Software''), to deal in the Software without restriction, including 10 without limitation the rights to use, copy, modify, merge, publish, 11 distribute, sublicense, and/or sell copies of the Software, and to 12 permit persons to whom the Software is furnished to do so, subject to 13 the following conditions: 14 15 The above copyright notice and this permission notice shall be included 16 in all copies or substantial portions of the Software. 17 18 THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, 19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 21 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 22 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 23 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 24 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 25 DEALINGS IN THE SOFTWARE. 26 ----------------------------------------------------------------------- */ 27 28 #define LIBFFI_ASM 29 #include <fficonfig.h> 30 #include <ffi.h> 31 32 #ifdef __powerpc64__ 33 .hidden ffi_call_LINUX64, .ffi_call_LINUX64 34 .globl ffi_call_LINUX64, .ffi_call_LINUX64 35 .section ".opd","aw" 36 .align 3 37 ffi_call_LINUX64: 38 .quad .ffi_call_LINUX64,.TOC.@tocbase,0 39 .size ffi_call_LINUX64,24 40 .type .ffi_call_LINUX64,@function 41 .text 42 .ffi_call_LINUX64: 43 .LFB1: 44 mflr %r0 45 std %r28, -32(%r1) 46 std %r29, -24(%r1) 47 std %r30, -16(%r1) 48 std %r31, -8(%r1) 49 std %r0, 16(%r1) 50 51 mr %r28, %r1 /* our AP. */ 52 .LCFI0: 53 stdux %r1, %r1, %r4 54 mr %r31, %r5 /* flags, */ 55 mr %r30, %r6 /* rvalue, */ 56 mr %r29, %r7 /* function address. */ 57 std %r2, 40(%r1) 58 59 /* Call ffi_prep_args64. */ 60 mr %r4, %r1 61 bl .ffi_prep_args64 62 63 ld %r0, 0(%r29) 64 ld %r2, 8(%r29) 65 ld %r11, 16(%r29) 66 67 /* Now do the call. */ 68 /* Set up cr1 with bits 4-7 of the flags. */ 69 mtcrf 0x40, %r31 70 71 /* Get the address to call into CTR. */ 72 mtctr %r0 73 /* Load all those argument registers. */ 74 ld %r3, -32-(8*8)(%r28) 75 ld %r4, -32-(7*8)(%r28) 76 ld %r5, -32-(6*8)(%r28) 77 ld %r6, -32-(5*8)(%r28) 78 bf- 5, 1f 79 ld %r7, -32-(4*8)(%r28) 80 ld %r8, -32-(3*8)(%r28) 81 ld %r9, -32-(2*8)(%r28) 82 ld %r10, -32-(1*8)(%r28) 83 1: 84 85 /* Load all the FP registers. */ 86 bf- 6, 2f 87 lfd %f1, -32-(21*8)(%r28) 88 lfd %f2, -32-(20*8)(%r28) 89 lfd %f3, -32-(19*8)(%r28) 90 lfd %f4, -32-(18*8)(%r28) 91 lfd %f5, -32-(17*8)(%r28) 92 lfd %f6, -32-(16*8)(%r28) 93 lfd %f7, -32-(15*8)(%r28) 94 lfd %f8, -32-(14*8)(%r28) 95 lfd %f9, -32-(13*8)(%r28) 96 lfd %f10, -32-(12*8)(%r28) 97 lfd %f11, -32-(11*8)(%r28) 98 lfd %f12, -32-(10*8)(%r28) 99 lfd %f13, -32-(9*8)(%r28) 100 2: 101 102 /* Make the call. */ 103 bctrl 104 105 /* This must follow the call immediately, the unwinder 106 uses this to find out if r2 has been saved or not. */ 107 ld %r2, 40(%r1) 108 109 /* Now, deal with the return value. */ 110 mtcrf 0x01, %r31 111 bt- 30, .Ldone_return_value 112 bt- 29, .Lfp_return_value 113 std %r3, 0(%r30) 114 /* Fall through... */ 115 116 .Ldone_return_value: 117 /* Restore the registers we used and return. */ 118 mr %r1, %r28 119 ld %r0, 16(%r28) 120 ld %r28, -32(%r1) 121 mtlr %r0 122 ld %r29, -24(%r1) 123 ld %r30, -16(%r1) 124 ld %r31, -8(%r1) 125 blr 126 127 .Lfp_return_value: 128 bf 28, .Lfloat_return_value 129 stfd %f1, 0(%r30) 130 mtcrf 0x02, %r31 /* cr6 */ 131 bf 27, .Ldone_return_value 132 stfd %f2, 8(%r30) 133 b .Ldone_return_value 134 .Lfloat_return_value: 135 stfs %f1, 0(%r30) 136 b .Ldone_return_value 137 .LFE1: 138 .long 0 139 .byte 0,12,0,1,128,4,0,0 140 .size .ffi_call_LINUX64,.-.ffi_call_LINUX64 141 142 .section .eh_frame,EH_FRAME_FLAGS,@progbits 143 .Lframe1: 144 .4byte .LECIE1-.LSCIE1 # Length of Common Information Entry 145 .LSCIE1: 146 .4byte 0x0 # CIE Identifier Tag 147 .byte 0x1 # CIE Version 148 .ascii "zR\0" # CIE Augmentation 149 .uleb128 0x1 # CIE Code Alignment Factor 150 .sleb128 -8 # CIE Data Alignment Factor 151 .byte 0x41 # CIE RA Column 152 .uleb128 0x1 # Augmentation size 153 .byte 0x14 # FDE Encoding (pcrel udata8) 154 .byte 0xc # DW_CFA_def_cfa 155 .uleb128 0x1 156 .uleb128 0x0 157 .align 3 158 .LECIE1: 159 .LSFDE1: 160 .4byte .LEFDE1-.LASFDE1 # FDE Length 161 .LASFDE1: 162 .4byte .LASFDE1-.Lframe1 # FDE CIE offset 163 .8byte .LFB1-. # FDE initial location 164 .8byte .LFE1-.LFB1 # FDE address range 165 .uleb128 0x0 # Augmentation size 166 .byte 0x2 # DW_CFA_advance_loc1 167 .byte .LCFI0-.LFB1 168 .byte 0xd # DW_CFA_def_cfa_register 169 .uleb128 0x1c 170 .byte 0x11 # DW_CFA_offset_extended_sf 171 .uleb128 0x41 172 .sleb128 -2 173 .byte 0x9f # DW_CFA_offset, column 0x1f 174 .uleb128 0x1 175 .byte 0x9e # DW_CFA_offset, column 0x1e 176 .uleb128 0x2 177 .byte 0x9d # DW_CFA_offset, column 0x1d 178 .uleb128 0x3 179 .byte 0x9c # DW_CFA_offset, column 0x1c 180 .uleb128 0x4 181 .align 3 182 .LEFDE1: 183 #endif 184 185 #if defined __ELF__ && defined __linux__ 186 .section .note.GNU-stack,"",@progbits 187 #endif 188
