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jeremybenn |
/* -----------------------------------------------------------------------
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sysv.h - Copyright (c) 2003 Jakub Jelinek
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Copyright (c) 2008 Red Hat, Inc.
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PowerPC64 Assembly glue.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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``Software''), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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----------------------------------------------------------------------- */
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#define LIBFFI_ASM
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#include
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#include
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#ifdef __powerpc64__
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.hidden ffi_call_LINUX64, .ffi_call_LINUX64
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.globl ffi_call_LINUX64, .ffi_call_LINUX64
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.section ".opd","aw"
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.align 3
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ffi_call_LINUX64:
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.quad .ffi_call_LINUX64,.TOC.@tocbase,0
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.size ffi_call_LINUX64,24
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.type .ffi_call_LINUX64,@function
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.text
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.ffi_call_LINUX64:
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.LFB1:
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mflr %r0
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std %r28, -32(%r1)
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std %r29, -24(%r1)
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std %r30, -16(%r1)
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std %r31, -8(%r1)
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std %r0, 16(%r1)
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mr %r28, %r1 /* our AP. */
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.LCFI0:
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stdux %r1, %r1, %r4
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mr %r31, %r5 /* flags, */
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mr %r30, %r6 /* rvalue, */
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mr %r29, %r7 /* function address. */
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std %r2, 40(%r1)
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/* Call ffi_prep_args64. */
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mr %r4, %r1
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bl .ffi_prep_args64
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ld %r0, 0(%r29)
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ld %r2, 8(%r29)
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ld %r11, 16(%r29)
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/* Now do the call. */
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/* Set up cr1 with bits 4-7 of the flags. */
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mtcrf 0x40, %r31
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/* Get the address to call into CTR. */
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mtctr %r0
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/* Load all those argument registers. */
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ld %r3, -32-(8*8)(%r28)
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ld %r4, -32-(7*8)(%r28)
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ld %r5, -32-(6*8)(%r28)
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ld %r6, -32-(5*8)(%r28)
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bf- 5, 1f
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ld %r7, -32-(4*8)(%r28)
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ld %r8, -32-(3*8)(%r28)
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ld %r9, -32-(2*8)(%r28)
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ld %r10, -32-(1*8)(%r28)
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1:
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/* Load all the FP registers. */
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bf- 6, 2f
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lfd %f1, -32-(21*8)(%r28)
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lfd %f2, -32-(20*8)(%r28)
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lfd %f3, -32-(19*8)(%r28)
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lfd %f4, -32-(18*8)(%r28)
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lfd %f5, -32-(17*8)(%r28)
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lfd %f6, -32-(16*8)(%r28)
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lfd %f7, -32-(15*8)(%r28)
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lfd %f8, -32-(14*8)(%r28)
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lfd %f9, -32-(13*8)(%r28)
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lfd %f10, -32-(12*8)(%r28)
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lfd %f11, -32-(11*8)(%r28)
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lfd %f12, -32-(10*8)(%r28)
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lfd %f13, -32-(9*8)(%r28)
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2:
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/* Make the call. */
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bctrl
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/* This must follow the call immediately, the unwinder
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uses this to find out if r2 has been saved or not. */
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ld %r2, 40(%r1)
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/* Now, deal with the return value. */
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mtcrf 0x01, %r31
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bt- 30, .Ldone_return_value
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bt- 29, .Lfp_return_value
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std %r3, 0(%r30)
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/* Fall through... */
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.Ldone_return_value:
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/* Restore the registers we used and return. */
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mr %r1, %r28
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ld %r0, 16(%r28)
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ld %r28, -32(%r1)
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mtlr %r0
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ld %r29, -24(%r1)
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ld %r30, -16(%r1)
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ld %r31, -8(%r1)
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blr
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.Lfp_return_value:
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bf 28, .Lfloat_return_value
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stfd %f1, 0(%r30)
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mtcrf 0x02, %r31 /* cr6 */
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bf 27, .Ldone_return_value
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stfd %f2, 8(%r30)
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b .Ldone_return_value
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.Lfloat_return_value:
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stfs %f1, 0(%r30)
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b .Ldone_return_value
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.LFE1:
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.long 0
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.byte 0,12,0,1,128,4,0,0
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.size .ffi_call_LINUX64,.-.ffi_call_LINUX64
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.section .eh_frame,EH_FRAME_FLAGS,@progbits
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.Lframe1:
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.4byte .LECIE1-.LSCIE1 # Length of Common Information Entry
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.LSCIE1:
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.4byte 0x0 # CIE Identifier Tag
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.byte 0x1 # CIE Version
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.ascii "zR\0" # CIE Augmentation
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.uleb128 0x1 # CIE Code Alignment Factor
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.sleb128 -8 # CIE Data Alignment Factor
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.byte 0x41 # CIE RA Column
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.uleb128 0x1 # Augmentation size
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.byte 0x14 # FDE Encoding (pcrel udata8)
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.byte 0xc # DW_CFA_def_cfa
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.uleb128 0x1
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.uleb128 0x0
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.align 3
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.LECIE1:
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.LSFDE1:
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.4byte .LEFDE1-.LASFDE1 # FDE Length
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.LASFDE1:
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.4byte .LASFDE1-.Lframe1 # FDE CIE offset
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.8byte .LFB1-. # FDE initial location
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.8byte .LFE1-.LFB1 # FDE address range
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.uleb128 0x0 # Augmentation size
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.byte 0x2 # DW_CFA_advance_loc1
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.byte .LCFI0-.LFB1
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.byte 0xd # DW_CFA_def_cfa_register
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.uleb128 0x1c
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.byte 0x11 # DW_CFA_offset_extended_sf
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.uleb128 0x41
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.sleb128 -2
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.byte 0x9f # DW_CFA_offset, column 0x1f
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.uleb128 0x1
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.byte 0x9e # DW_CFA_offset, column 0x1e
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.uleb128 0x2
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.byte 0x9d # DW_CFA_offset, column 0x1d
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.uleb128 0x3
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.byte 0x9c # DW_CFA_offset, column 0x1c
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.uleb128 0x4
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.align 3
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.LEFDE1:
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#endif
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#if defined __ELF__ && defined __linux__
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.section .note.GNU-stack,"",@progbits
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#endif
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