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https://github.com/autc04/Retro68.git
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96 lines
1.8 KiB
ArmAsm
96 lines
1.8 KiB
ArmAsm
.file "memset.S"
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.section .text
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.global _memset
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.type _memset,@function
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_memset:
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movm [d2,d3,a2,a3], (sp)
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.Lend_of_prologue:
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mov d0, d3
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mov d1, d2
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mov (28, sp),a1
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mov d3, a0
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#ifndef __OPTIMIZE_SIZE__
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cmp 3, a1
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bls .L41
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btst 3, d3
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bne .L41
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extbu d2
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mov d2, d1
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asl 8, d1
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or d2, d1
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mov d1, d0
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asl 16, d0
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or d0, d1
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cmp 15, a1
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bls .L36
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setlb
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mov d1, (a0)
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inc4 a0
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mov d1, (a0)
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inc4 a0
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mov d1, (a0)
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inc4 a0
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mov d1, (a0)
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inc4 a0
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add -16, a1
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cmp 15, a1
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lhi
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.L36:
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cmp 3, a1
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bls .L41
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setlb
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mov d1, (a0)
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inc4 a0
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add -4, a1
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cmp 3, a1
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lhi
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.L41:
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#endif
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cmp 0, a1
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beq .Lepilogue
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setlb
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movbu d2, (a0)
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inc a0
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sub 1, a1
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lne
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.Lepilogue:
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mov d3,a0
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ret [d2,d3,a2,a3], 16
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.Lend_of_memset:
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.size _memset, .Lend_of_memset - _memset
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.section .debug_frame,"",@progbits
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.Lstart_of_debug_frame:
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# Common Information Entry (CIE)
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.4byte .Lend_of_CIE - .Lstart_of_CIE # CIE Length
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.Lstart_of_CIE:
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.4byte 0xffffffff # CIE Identifier Tag
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.byte 0x1 # CIE Version
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.ascii "\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 0x32 # CIE RA Column
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.byte 0xc # DW_CFA_def_cfa
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.uleb128 0x9
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.uleb128 0x0
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.byte 0xb2 # DW_CFA_offset, column 0x32
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.uleb128 0x0
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.align 2
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.Lend_of_CIE:
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# Frame Description Entry (FDE)
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.4byte .Lend_of_FDE - .Lstart_of_FDE # FDE Length
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.Lstart_of_FDE:
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.4byte .Lstart_of_debug_frame # FDE CIE offset
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.4byte _memset # FDE initial location
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.4byte .Lend_of_memset - _memset # FDE address range
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.byte 0x4 # DW_CFA_advance_loc4
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.4byte .Lend_of_prologue - _memset
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.byte 0xe # DW_CFA_def_cfa_offset
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.uleb128 0x4
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.byte 0x87 # DW_CFA_offset, column 0x7
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.uleb128 0x1
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.align 2
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.Lend_of_FDE:
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