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Last change
on this file since 444 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
1.6 KB
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| 1 | .file "strlen.S" |
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| 2 | |
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| 3 | .section .text |
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| 4 | .global _strlen |
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| 5 | .type _strlen,@function |
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| 6 | _strlen: |
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| 7 | movm [d2,d3,a2,a3],(sp) |
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| 8 | .Lend_of_prologue: |
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| 9 | mov d0,a0 |
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| 10 | mov a0,a2 |
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| 11 | #ifndef __OPTIMIZE_SIZE__ |
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| 12 | btst 3,d0 |
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| 13 | bne .L21 |
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| 14 | mov (a0),d0 |
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| 15 | mov -16843009,a1 |
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| 16 | mov a1,d1 |
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| 17 | add d0,d1 |
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| 18 | not d0 |
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| 19 | and d0,d1 |
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| 20 | mov -2139062144,d2 |
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| 21 | btst -2139062144,d1 |
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| 22 | bne .L21 |
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| 23 | setlb |
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| 24 | inc4 a0 |
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| 25 | mov (a0),d0 |
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| 26 | mov a1,d1 |
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| 27 | add d0,d1 |
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| 28 | not d0 |
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| 29 | and d0,d1 |
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| 30 | and d2,d1 |
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| 31 | leq |
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| 32 | jmp .L21 |
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| 33 | #endif |
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| 34 | .L19: |
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| 35 | inc a0 |
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| 36 | .L21: |
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| 37 | movbu (a0),d3 |
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| 38 | cmp 0,d3 |
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| 39 | bne .L19 |
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| 40 | sub a2,a0 |
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| 41 | mov a0,d0 |
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| 42 | .Lepilogue: |
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| 43 | ret [d2,d3,a2,a3],16 |
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| 44 | .Lend_of_strlen: |
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| 45 | .size _strlen, .Lend_of_strlen - _strlen |
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| 46 | |
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| 47 | .section .debug_frame,"",@progbits |
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| 48 | .Lstart_of_debug_frame: |
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| 49 | # Common Information Entry (CIE) |
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| 50 | .4byte .Lend_of_CIE - .Lstart_of_CIE # CIE Length |
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| 51 | .Lstart_of_CIE: |
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| 52 | .4byte 0xffffffff # CIE Identifier Tag |
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| 53 | .byte 0x1 # CIE Version |
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| 54 | .ascii "\0" # CIE Augmentation |
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| 55 | .uleb128 0x1 # CIE Code Alignment Factor |
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| 56 | .sleb128 -4 # CIE Data Alignment Factor |
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| 57 | .byte 0x32 # CIE RA Column |
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| 58 | .byte 0xc # DW_CFA_def_cfa |
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| 59 | .uleb128 0x9 |
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| 60 | .uleb128 0x0 |
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| 61 | .byte 0xb2 # DW_CFA_offset, column 0x32 |
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| 62 | .uleb128 0x0 |
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| 63 | .align 2 |
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| 64 | .Lend_of_CIE: |
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| 65 | |
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| 66 | # Frame Description Entry (FDE) |
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| 67 | .4byte .Lend_of_FDE - .Lstart_of_FDE # FDE Length |
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| 68 | .Lstart_of_FDE: |
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| 69 | .4byte .Lstart_of_debug_frame # FDE CIE offset |
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| 70 | .4byte _strlen # FDE initial location |
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| 71 | .4byte .Lend_of_strlen - _strlen # FDE address range |
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| 72 | .byte 0x4 # DW_CFA_advance_loc4 |
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| 73 | .4byte .Lend_of_prologue - _strlen |
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| 74 | .byte 0xe # DW_CFA_def_cfa_offset |
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| 75 | .uleb128 0x4 |
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| 76 | .byte 0x87 # DW_CFA_offset, column 0x7 |
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| 77 | .uleb128 0x1 |
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| 78 | .align 2 |
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| 79 | .Lend_of_FDE: |
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