80 lines
1.6 KiB
ArmAsm
80 lines
1.6 KiB
ArmAsm
.file "strlen.S"
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.section .text
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.global _strlen
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.type _strlen,@function
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_strlen:
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movm [d2,d3,a2,a3],(sp)
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.Lend_of_prologue:
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mov d0,a0
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mov a0,a2
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#ifndef __OPTIMIZE_SIZE__
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btst 3,d0
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bne .L21
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mov (a0),d0
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mov -16843009,a1
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mov a1,d1
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add d0,d1
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not d0
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and d0,d1
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mov -2139062144,d2
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btst -2139062144,d1
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bne .L21
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setlb
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inc4 a0
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mov (a0),d0
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mov a1,d1
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add d0,d1
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not d0
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and d0,d1
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and d2,d1
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leq
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jmp .L21
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#endif
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.L19:
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inc a0
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.L21:
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movbu (a0),d3
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cmp 0,d3
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bne .L19
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sub a2,a0
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mov a0,d0
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.Lepilogue:
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ret [d2,d3,a2,a3],16
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.Lend_of_strlen:
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.size _strlen, .Lend_of_strlen - _strlen
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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 _strlen # FDE initial location
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.4byte .Lend_of_strlen - _strlen # FDE address range
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.byte 0x4 # DW_CFA_advance_loc4
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.4byte .Lend_of_prologue - _strlen
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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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