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jeremybenn |
/* -----------------------------------------------------------------------
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sysv.S - Copyright (c) 2000 Software AG
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Copyright (c) 2008 Red Hat, Inc.
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S390 Foreign Function Interface
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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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#ifndef __s390x__
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.text
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# r2: cif->bytes
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# r3: &ecif
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# r4: ffi_prep_args
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# r5: ret_type
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# r6: ecif.rvalue
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# ov: fn
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# This assumes we are using gas.
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.globl ffi_call_SYSV
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.type ffi_call_SYSV,%function
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ffi_call_SYSV:
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.LFB1:
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stm %r6,%r15,24(%r15) # Save registers
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.LCFI0:
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basr %r13,0 # Set up base register
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.Lbase:
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lr %r11,%r15 # Set up frame pointer
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.LCFI1:
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sr %r15,%r2
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ahi %r15,-96-48 # Allocate stack
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lr %r8,%r6 # Save ecif.rvalue
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sr %r9,%r9
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ic %r9,.Ltable-.Lbase(%r13,%r5) # Load epilog address
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l %r7,96(%r11) # Load function address
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st %r11,0(%r15) # Set up back chain
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ahi %r11,-48 # Register save area
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.LCFI2:
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la %r2,96(%r15) # Save area
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# r3 already holds &ecif
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basr %r14,%r4 # Call ffi_prep_args
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lm %r2,%r6,0(%r11) # Load arguments
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ld %f0,32(%r11)
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ld %f2,40(%r11)
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la %r14,0(%r13,%r9) # Set return address
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br %r7 # ... and call function
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.LretNone: # Return void
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l %r4,48+56(%r11)
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lm %r6,%r15,48+24(%r11)
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br %r4
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.LretFloat:
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l %r4,48+56(%r11)
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ste %f0,0(%r8) # Return float
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lm %r6,%r15,48+24(%r11)
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br %r4
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.LretDouble:
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l %r4,48+56(%r11)
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std %f0,0(%r8) # Return double
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lm %r6,%r15,48+24(%r11)
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br %r4
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.LretInt32:
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l %r4,48+56(%r11)
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st %r2,0(%r8) # Return int
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lm %r6,%r15,48+24(%r11)
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br %r4
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.LretInt64:
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l %r4,48+56(%r11)
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stm %r2,%r3,0(%r8) # Return long long
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lm %r6,%r15,48+24(%r11)
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br %r4
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.Ltable:
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.byte .LretNone-.Lbase # FFI390_RET_VOID
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.byte .LretNone-.Lbase # FFI390_RET_STRUCT
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.byte .LretFloat-.Lbase # FFI390_RET_FLOAT
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.byte .LretDouble-.Lbase # FFI390_RET_DOUBLE
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.byte .LretInt32-.Lbase # FFI390_RET_INT32
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.byte .LretInt64-.Lbase # FFI390_RET_INT64
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.LFE1:
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.ffi_call_SYSV_end:
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.size ffi_call_SYSV,.ffi_call_SYSV_end-ffi_call_SYSV
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.globl ffi_closure_SYSV
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.type ffi_closure_SYSV,%function
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ffi_closure_SYSV:
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.LFB2:
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stm %r12,%r15,48(%r15) # Save registers
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.LCFI10:
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basr %r13,0 # Set up base register
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.Lcbase:
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stm %r2,%r6,8(%r15) # Save arguments
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std %f0,64(%r15)
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std %f2,72(%r15)
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lr %r1,%r15 # Set up stack frame
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ahi %r15,-96
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.LCFI11:
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l %r12,.Lchelper-.Lcbase(%r13) # Get helper function
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lr %r2,%r0 # Closure
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la %r3,8(%r1) # GPRs
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la %r4,64(%r1) # FPRs
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la %r5,96(%r1) # Overflow
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st %r1,0(%r15) # Set up back chain
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bas %r14,0(%r12,%r13) # Call helper
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l %r4,96+56(%r15)
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ld %f0,96+64(%r15) # Load return registers
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lm %r2,%r3,96+8(%r15)
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lm %r12,%r15,96+48(%r15)
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br %r4
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.align 4
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.Lchelper:
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.long ffi_closure_helper_SYSV-.Lcbase
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.LFE2:
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.ffi_closure_SYSV_end:
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.size ffi_closure_SYSV,.ffi_closure_SYSV_end-ffi_closure_SYSV
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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 -4 # CIE Data Alignment Factor
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.byte 0xe # CIE RA Column
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.uleb128 0x1 # Augmentation size
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.byte 0x1b # FDE Encoding (pcrel sdata4)
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.byte 0xc # DW_CFA_def_cfa
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.uleb128 0xf
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.uleb128 0x60
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.align 4
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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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.4byte .LFB1-. # FDE initial location
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.4byte .LFE1-.LFB1 # FDE address range
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.uleb128 0x0 # Augmentation size
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.byte 0x4 # DW_CFA_advance_loc4
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.4byte .LCFI0-.LFB1
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.byte 0x8f # DW_CFA_offset, column 0xf
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.uleb128 0x9
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.byte 0x8e # DW_CFA_offset, column 0xe
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.uleb128 0xa
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.byte 0x8d # DW_CFA_offset, column 0xd
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.uleb128 0xb
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.byte 0x8c # DW_CFA_offset, column 0xc
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.uleb128 0xc
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.byte 0x8b # DW_CFA_offset, column 0xb
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.uleb128 0xd
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.byte 0x8a # DW_CFA_offset, column 0xa
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.uleb128 0xe
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.byte 0x89 # DW_CFA_offset, column 0x9
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.uleb128 0xf
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.byte 0x88 # DW_CFA_offset, column 0x8
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.uleb128 0x10
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.byte 0x87 # DW_CFA_offset, column 0x7
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.uleb128 0x11
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.byte 0x86 # DW_CFA_offset, column 0x6
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.uleb128 0x12
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.byte 0x4 # DW_CFA_advance_loc4
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.4byte .LCFI1-.LCFI0
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.byte 0xd # DW_CFA_def_cfa_register
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.uleb128 0xb
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.byte 0x4 # DW_CFA_advance_loc4
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.4byte .LCFI2-.LCFI1
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.byte 0xe # DW_CFA_def_cfa_offset
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.uleb128 0x90
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.align 4
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.LEFDE1:
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.LSFDE2:
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.4byte .LEFDE2-.LASFDE2 # FDE Length
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.LASFDE2:
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.4byte .LASFDE2-.Lframe1 # FDE CIE offset
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.4byte .LFB2-. # FDE initial location
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.4byte .LFE2-.LFB2 # FDE address range
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.uleb128 0x0 # Augmentation size
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.byte 0x4 # DW_CFA_advance_loc4
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.4byte .LCFI10-.LFB2
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.byte 0x8f # DW_CFA_offset, column 0xf
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.uleb128 0x9
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.byte 0x8e # DW_CFA_offset, column 0xe
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.uleb128 0xa
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.byte 0x8d # DW_CFA_offset, column 0xd
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.uleb128 0xb
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.byte 0x8c # DW_CFA_offset, column 0xc
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.uleb128 0xc
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.byte 0x4 # DW_CFA_advance_loc4
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.4byte .LCFI11-.LCFI10
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.byte 0xe # DW_CFA_def_cfa_offset
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.uleb128 0xc0
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.align 4
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.LEFDE2:
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#else
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.text
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# r2: cif->bytes
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# r3: &ecif
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| 241 |
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# r4: ffi_prep_args
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# r5: ret_type
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# r6: ecif.rvalue
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# ov: fn
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# This assumes we are using gas.
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.globl ffi_call_SYSV
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.type ffi_call_SYSV,%function
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ffi_call_SYSV:
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.LFB1:
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stmg %r6,%r15,48(%r15) # Save registers
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.LCFI0:
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| 253 |
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larl %r13,.Lbase # Set up base register
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| 254 |
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lgr %r11,%r15 # Set up frame pointer
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| 255 |
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.LCFI1:
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| 256 |
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sgr %r15,%r2
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aghi %r15,-160-80 # Allocate stack
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lgr %r8,%r6 # Save ecif.rvalue
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| 259 |
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llgc %r9,.Ltable-.Lbase(%r13,%r5) # Load epilog address
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| 260 |
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lg %r7,160(%r11) # Load function address
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| 261 |
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stg %r11,0(%r15) # Set up back chain
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| 262 |
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aghi %r11,-80 # Register save area
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| 263 |
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.LCFI2:
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| 264 |
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| 265 |
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la %r2,160(%r15) # Save area
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| 266 |
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# r3 already holds &ecif
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| 267 |
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basr %r14,%r4 # Call ffi_prep_args
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| 268 |
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| 269 |
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lmg %r2,%r6,0(%r11) # Load arguments
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| 270 |
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ld %f0,48(%r11)
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| 271 |
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ld %f2,56(%r11)
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| 272 |
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ld %f4,64(%r11)
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| 273 |
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ld %f6,72(%r11)
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| 274 |
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la %r14,0(%r13,%r9) # Set return address
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| 275 |
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br %r7 # ... and call function
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| 276 |
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| 277 |
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.Lbase:
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| 278 |
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.LretNone: # Return void
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| 279 |
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lg %r4,80+112(%r11)
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| 280 |
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lmg %r6,%r15,80+48(%r11)
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| 281 |
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br %r4
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| 282 |
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| 283 |
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.LretFloat:
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| 284 |
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lg %r4,80+112(%r11)
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| 285 |
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ste %f0,0(%r8) # Return float
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| 286 |
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lmg %r6,%r15,80+48(%r11)
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| 287 |
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br %r4
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| 288 |
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| 289 |
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.LretDouble:
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| 290 |
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lg %r4,80+112(%r11)
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| 291 |
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std %f0,0(%r8) # Return double
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| 292 |
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lmg %r6,%r15,80+48(%r11)
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| 293 |
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br %r4
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| 294 |
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| 295 |
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.LretInt32:
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| 296 |
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lg %r4,80+112(%r11)
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| 297 |
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st %r2,0(%r8) # Return int
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| 298 |
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lmg %r6,%r15,80+48(%r11)
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| 299 |
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br %r4
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| 300 |
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| 301 |
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.LretInt64:
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| 302 |
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lg %r4,80+112(%r11)
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| 303 |
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stg %r2,0(%r8) # Return long
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| 304 |
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lmg %r6,%r15,80+48(%r11)
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| 305 |
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br %r4
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| 306 |
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| 307 |
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.Ltable:
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| 308 |
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.byte .LretNone-.Lbase # FFI390_RET_VOID
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| 309 |
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.byte .LretNone-.Lbase # FFI390_RET_STRUCT
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| 310 |
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.byte .LretFloat-.Lbase # FFI390_RET_FLOAT
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| 311 |
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.byte .LretDouble-.Lbase # FFI390_RET_DOUBLE
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| 312 |
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.byte .LretInt32-.Lbase # FFI390_RET_INT32
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| 313 |
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.byte .LretInt64-.Lbase # FFI390_RET_INT64
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| 314 |
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| 315 |
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.LFE1:
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| 316 |
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.ffi_call_SYSV_end:
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| 317 |
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.size ffi_call_SYSV,.ffi_call_SYSV_end-ffi_call_SYSV
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| 318 |
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| 319 |
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|
| 320 |
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.globl ffi_closure_SYSV
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| 321 |
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.type ffi_closure_SYSV,%function
|
| 322 |
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ffi_closure_SYSV:
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| 323 |
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.LFB2:
|
| 324 |
|
|
stmg %r14,%r15,112(%r15) # Save registers
|
| 325 |
|
|
.LCFI10:
|
| 326 |
|
|
stmg %r2,%r6,16(%r15) # Save arguments
|
| 327 |
|
|
std %f0,128(%r15)
|
| 328 |
|
|
std %f2,136(%r15)
|
| 329 |
|
|
std %f4,144(%r15)
|
| 330 |
|
|
std %f6,152(%r15)
|
| 331 |
|
|
lgr %r1,%r15 # Set up stack frame
|
| 332 |
|
|
aghi %r15,-160
|
| 333 |
|
|
.LCFI11:
|
| 334 |
|
|
lgr %r2,%r0 # Closure
|
| 335 |
|
|
la %r3,16(%r1) # GPRs
|
| 336 |
|
|
la %r4,128(%r1) # FPRs
|
| 337 |
|
|
la %r5,160(%r1) # Overflow
|
| 338 |
|
|
stg %r1,0(%r15) # Set up back chain
|
| 339 |
|
|
|
| 340 |
|
|
brasl %r14,ffi_closure_helper_SYSV # Call helper
|
| 341 |
|
|
|
| 342 |
|
|
lg %r14,160+112(%r15)
|
| 343 |
|
|
ld %f0,160+128(%r15) # Load return registers
|
| 344 |
|
|
lg %r2,160+16(%r15)
|
| 345 |
|
|
la %r15,160(%r15)
|
| 346 |
|
|
br %r14
|
| 347 |
|
|
.LFE2:
|
| 348 |
|
|
|
| 349 |
|
|
.ffi_closure_SYSV_end:
|
| 350 |
|
|
.size ffi_closure_SYSV,.ffi_closure_SYSV_end-ffi_closure_SYSV
|
| 351 |
|
|
|
| 352 |
|
|
|
| 353 |
|
|
|
| 354 |
|
|
.section .eh_frame,EH_FRAME_FLAGS,@progbits
|
| 355 |
|
|
.Lframe1:
|
| 356 |
|
|
.4byte .LECIE1-.LSCIE1 # Length of Common Information Entry
|
| 357 |
|
|
.LSCIE1:
|
| 358 |
|
|
.4byte 0x0 # CIE Identifier Tag
|
| 359 |
|
|
.byte 0x1 # CIE Version
|
| 360 |
|
|
.ascii "zR\0" # CIE Augmentation
|
| 361 |
|
|
.uleb128 0x1 # CIE Code Alignment Factor
|
| 362 |
|
|
.sleb128 -8 # CIE Data Alignment Factor
|
| 363 |
|
|
.byte 0xe # CIE RA Column
|
| 364 |
|
|
.uleb128 0x1 # Augmentation size
|
| 365 |
|
|
.byte 0x1b # FDE Encoding (pcrel sdata4)
|
| 366 |
|
|
.byte 0xc # DW_CFA_def_cfa
|
| 367 |
|
|
.uleb128 0xf
|
| 368 |
|
|
.uleb128 0xa0
|
| 369 |
|
|
.align 8
|
| 370 |
|
|
.LECIE1:
|
| 371 |
|
|
.LSFDE1:
|
| 372 |
|
|
.4byte .LEFDE1-.LASFDE1 # FDE Length
|
| 373 |
|
|
.LASFDE1:
|
| 374 |
|
|
.4byte .LASFDE1-.Lframe1 # FDE CIE offset
|
| 375 |
|
|
.4byte .LFB1-. # FDE initial location
|
| 376 |
|
|
.4byte .LFE1-.LFB1 # FDE address range
|
| 377 |
|
|
.uleb128 0x0 # Augmentation size
|
| 378 |
|
|
.byte 0x4 # DW_CFA_advance_loc4
|
| 379 |
|
|
.4byte .LCFI0-.LFB1
|
| 380 |
|
|
.byte 0x8f # DW_CFA_offset, column 0xf
|
| 381 |
|
|
.uleb128 0x5
|
| 382 |
|
|
.byte 0x8e # DW_CFA_offset, column 0xe
|
| 383 |
|
|
.uleb128 0x6
|
| 384 |
|
|
.byte 0x8d # DW_CFA_offset, column 0xd
|
| 385 |
|
|
.uleb128 0x7
|
| 386 |
|
|
.byte 0x8c # DW_CFA_offset, column 0xc
|
| 387 |
|
|
.uleb128 0x8
|
| 388 |
|
|
.byte 0x8b # DW_CFA_offset, column 0xb
|
| 389 |
|
|
.uleb128 0x9
|
| 390 |
|
|
.byte 0x8a # DW_CFA_offset, column 0xa
|
| 391 |
|
|
.uleb128 0xa
|
| 392 |
|
|
.byte 0x89 # DW_CFA_offset, column 0x9
|
| 393 |
|
|
.uleb128 0xb
|
| 394 |
|
|
.byte 0x88 # DW_CFA_offset, column 0x8
|
| 395 |
|
|
.uleb128 0xc
|
| 396 |
|
|
.byte 0x87 # DW_CFA_offset, column 0x7
|
| 397 |
|
|
.uleb128 0xd
|
| 398 |
|
|
.byte 0x86 # DW_CFA_offset, column 0x6
|
| 399 |
|
|
.uleb128 0xe
|
| 400 |
|
|
.byte 0x4 # DW_CFA_advance_loc4
|
| 401 |
|
|
.4byte .LCFI1-.LCFI0
|
| 402 |
|
|
.byte 0xd # DW_CFA_def_cfa_register
|
| 403 |
|
|
.uleb128 0xb
|
| 404 |
|
|
.byte 0x4 # DW_CFA_advance_loc4
|
| 405 |
|
|
.4byte .LCFI2-.LCFI1
|
| 406 |
|
|
.byte 0xe # DW_CFA_def_cfa_offset
|
| 407 |
|
|
.uleb128 0xf0
|
| 408 |
|
|
.align 8
|
| 409 |
|
|
.LEFDE1:
|
| 410 |
|
|
.LSFDE2:
|
| 411 |
|
|
.4byte .LEFDE2-.LASFDE2 # FDE Length
|
| 412 |
|
|
.LASFDE2:
|
| 413 |
|
|
.4byte .LASFDE2-.Lframe1 # FDE CIE offset
|
| 414 |
|
|
.4byte .LFB2-. # FDE initial location
|
| 415 |
|
|
.4byte .LFE2-.LFB2 # FDE address range
|
| 416 |
|
|
.uleb128 0x0 # Augmentation size
|
| 417 |
|
|
.byte 0x4 # DW_CFA_advance_loc4
|
| 418 |
|
|
.4byte .LCFI10-.LFB2
|
| 419 |
|
|
.byte 0x8f # DW_CFA_offset, column 0xf
|
| 420 |
|
|
.uleb128 0x5
|
| 421 |
|
|
.byte 0x8e # DW_CFA_offset, column 0xe
|
| 422 |
|
|
.uleb128 0x6
|
| 423 |
|
|
.byte 0x4 # DW_CFA_advance_loc4
|
| 424 |
|
|
.4byte .LCFI11-.LCFI10
|
| 425 |
|
|
.byte 0xe # DW_CFA_def_cfa_offset
|
| 426 |
|
|
.uleb128 0x140
|
| 427 |
|
|
.align 8
|
| 428 |
|
|
.LEFDE2:
|
| 429 |
|
|
|
| 430 |
|
|
#endif
|
| 431 |
|
|
|
| 432 |
|
|
#if defined __ELF__ && defined __linux__
|
| 433 |
|
|
.section .note.GNU-stack,"",@progbits
|
| 434 |
|
|
#endif
|
