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cgo
[ DIR ]
drwxr-xr-x
debug
[ DIR ]
drwxr-xr-x
internal
[ DIR ]
drwxr-xr-x
msan
[ DIR ]
drwxr-xr-x
pprof
[ DIR ]
drwxr-xr-x
race
[ DIR ]
drwxr-xr-x
testdata
[ DIR ]
drwxr-xr-x
trace
[ DIR ]
drwxr-xr-x
HACKING.md
13.07
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Makefile
178
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alg.go
10.18
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asm.s
1.16
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asm_386.s
40.2
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asm_amd64.s
45.78
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asm_arm.s
30.89
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asm_arm64.s
33.12
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asm_mips64x.s
22.45
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asm_mipsx.s
24.72
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asm_ppc64x.h
1023
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asm_ppc64x.s
29.39
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asm_riscv64.s
17.38
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asm_s390x.s
26.35
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asm_wasm.s
9.65
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atomic_arm64.s
259
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atomic_mips64x.s
296
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atomic_mipsx.s
258
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atomic_pointer.go
2.62
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atomic_ppc64x.s
433
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atomic_riscv64.s
307
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auxv_none.go
358
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callers_test.go
7.7
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cgo.go
2.01
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cgo_mmap.go
2.38
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cgo_ppc64x.go
411
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cgo_sigaction.go
3.09
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cgocall.go
21.38
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cgocallback.go
317
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cgocheck.go
6.8
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chan.go
19.71
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chan_test.go
21.27
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chanbarrier_test.go
1.4
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checkptr.go
2.5
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checkptr_test.go
1.27
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closure_test.go
936
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compiler.go
413
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complex.go
1.59
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complex_test.go
1.05
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cpuflags.go
740
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cpuflags_amd64.go
533
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cpuprof.go
6.65
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cputicks.go
478
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crash_cgo_test.go
13.71
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crash_nonunix_test.go
385
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crash_test.go
20.24
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crash_unix_test.go
8.89
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debug.go
1.63
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debug_test.go
6.16
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debugcall.go
2.83
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debuglog.go
17.08
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debuglog_off.go
356
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debuglog_on.go
1.09
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debuglog_test.go
4.56
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defer_test.go
9.98
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defs1_linux.go
844
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defs1_netbsd_386.go
2.84
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defs1_netbsd_amd64.go
3.07
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defs1_netbsd_arm.go
2.96
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defs1_netbsd_arm64.go
3.18
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defs1_solaris_amd64.go
4.02
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defs2_linux.go
3.51
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defs3_linux.go
1.09
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defs_aix.go
4.16
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defs_aix_ppc64.go
3.61
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defs_arm_linux.go
2.67
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defs_darwin.go
3.84
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defs_darwin_386.go
5.98
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defs_darwin_amd64.go
6.07
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defs_darwin_arm.go
3.78
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defs_darwin_arm64.go
3.84
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defs_dragonfly.go
2.54
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defs_dragonfly_amd64.go
3.25
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defs_freebsd.go
3.84
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defs_freebsd_386.go
4.35
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defs_freebsd_amd64.go
4.62
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defs_freebsd_arm.go
3.68
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defs_freebsd_arm64.go
4
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defs_illumos_amd64.go
285
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defs_linux.go
3.04
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defs_linux_386.go
4.05
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defs_linux_amd64.go
4.56
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defs_linux_arm.go
3.31
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defs_linux_arm64.go
3.23
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defs_linux_mips64x.go
3.04
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defs_linux_mipsx.go
3.18
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defs_linux_ppc64.go
3.28
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defs_linux_ppc64le.go
3.28
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defs_linux_riscv64.go
3.27
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defs_linux_s390x.go
2.76
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defs_netbsd.go
2.74
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defs_netbsd_386.go
854
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defs_netbsd_amd64.go
1.01
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defs_netbsd_arm.go
763
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defs_openbsd.go
2.6
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defs_openbsd_386.go
2.63
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defs_openbsd_amd64.go
2.83
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defs_openbsd_arm.go
2.74
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defs_openbsd_arm64.go
2.34
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defs_plan9_386.go
1.47
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defs_plan9_amd64.go
1.66
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defs_plan9_arm.go
1.73
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defs_solaris.go
3.33
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defs_solaris_amd64.go
1003
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defs_windows.go
2.07
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defs_windows_386.go
3.75
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defs_windows_amd64.go
4.51
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defs_windows_arm.go
3.59
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duff_386.s
8.24
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duff_amd64.s
5.53
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duff_arm.s
7.11
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duff_arm64.s
5.25
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duff_mips64x.s
11.28
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duff_ppc64x.s
2.45
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duff_s390x.s
507
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env_plan9.go
855
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env_posix.go
1.82
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env_test.go
1.28
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error.go
7.26
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example_test.go
1.34
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export_aix_test.go
204
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export_arm_test.go
226
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export_darwin_test.go
351
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export_debug_test.go
5.28
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export_debuglog_test.go
1.27
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export_futex_test.go
529
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export_linux_test.go
429
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export_mmap_test.go
481
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export_solaris_test.go
282
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export_test.go
23.58
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export_unix_test.go
2.28
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export_windows_test.go
652
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extern.go
11.6
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fastlog2.go
1.22
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fastlog2_test.go
784
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fastlog2table.go
904
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float.go
1.35
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funcdata.h
2.44
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futex_test.go
2.1
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gc_test.go
13.22
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gcinfo_test.go
6.18
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go_tls.h
366
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hash32.go
2.51
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hash64.go
2.6
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hash_test.go
17.54
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heapdump.go
17.1
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iface.go
15.78
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iface_test.go
6.81
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lfstack.go
1.77
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lfstack_32bit.go
522
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lfstack_64bit.go
2.15
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lfstack_test.go
2.78
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libfuzzer.go
2.58
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libfuzzer_amd64.s
940
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libfuzzer_arm64.s
751
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lock_futex.go
5.06
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lock_js.go
5.45
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lock_sema.go
6.6
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malloc.go
48.32
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malloc_test.go
9.37
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map.go
42.13
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map_benchmark_test.go
10.16
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map_fast32.go
12.18
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map_fast64.go
12.37
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map_faststr.go
13.82
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map_test.go
27.11
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mbarrier.go
12.14
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mbitmap.go
67.53
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mcache.go
5.61
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mcentral.go
7.14
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mem_aix.go
1.93
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mem_bsd.go
2.05
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mem_darwin.go
1.88
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mem_js.go
2.32
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mem_linux.go
5.58
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mem_plan9.go
4.53
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mem_windows.go
3.86
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memclr_386.s
2.4
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memclr_amd64.s
3.65
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memclr_arm.s
2.44
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memclr_arm64.s
3.48
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memclr_mips64x.s
785
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memclr_mipsx.s
1.24
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memclr_plan9_386.s
905
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memclr_plan9_amd64.s
433
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memclr_ppc64x.s
4.2
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memclr_riscv64.s
848
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memclr_s390x.s
1.89
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memclr_wasm.s
544
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memmove_386.s
4.45
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memmove_amd64.s
12.33
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memmove_arm.s
5.9
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memmove_arm64.s
3.56
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memmove_linux_amd64_test.go
1.61
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memmove_mips64x.s
1.82
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memmove_mipsx.s
4.39
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memmove_plan9_386.s
3.06
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memmove_plan9_amd64.s
3.04
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memmove_ppc64x.s
3.33
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memmove_riscv64.s
1.81
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memmove_s390x.s
2.92
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memmove_test.go
10.97
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memmove_wasm.s
1.74
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mfinal.go
14.8
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mfinal_test.go
5.85
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mfixalloc.go
2.72
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mgc.go
74.87
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mgcmark.go
46.5
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mgcscavenge.go
30.95
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mgcscavenge_test.go
12.34
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mgcstack.go
10.55
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mgcsweep.go
14.79
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mgcsweepbuf.go
5.98
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mgcwork.go
14.24
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mheap.go
61.5
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mkduff.go
6.23
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mkfastlog2table.go
1.32
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mkpreempt.go
13.33
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mksizeclasses.go
8.62
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mmap.go
847
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mpagealloc.go
35.25
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mpagealloc_32bit.go
3.75
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mpagealloc_64bit.go
6.51
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mpagealloc_test.go
28.88
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mpagecache.go
5.03
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mpagecache_test.go
9.93
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mpallocbits.go
10.69
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mpallocbits_test.go
12.93
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mprof.go
24.06
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mranges.go
5.41
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msan.go
1.39
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msan0.go
647
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msan_amd64.s
2.03
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msan_arm64.s
1.69
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msize.go
785
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mstats.go
22.62
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mwbbuf.go
10.07
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nbpipe_fcntl_libc_test.go
463
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nbpipe_fcntl_unix_test.go
445
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nbpipe_pipe.go
411
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nbpipe_pipe2.go
509
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nbpipe_test.go
2.17
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net_plan9.go
645
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netpoll.go
14.46
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netpoll_aix.go
4.64
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netpoll_epoll.go
4
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netpoll_fake.go
648
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netpoll_kqueue.go
4.39
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netpoll_solaris.go
10.56
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netpoll_stub.go
1.3
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netpoll_windows.go
4.51
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norace_linux_test.go
888
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norace_test.go
979
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numcpu_freebsd_test.go
381
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os2_aix.go
20.67
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os2_freebsd.go
302
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os2_openbsd.go
296
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os2_plan9.go
1.48
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os2_solaris.go
320
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os3_plan9.go
3.99
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os3_solaris.go
16.92
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os_aix.go
8.29
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os_android.go
463
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os_darwin.go
10.59
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os_darwin_arm.go
749
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os_darwin_arm64.go
416
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os_dragonfly.go
6.2
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os_freebsd.go
10.97
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os_freebsd2.go
478
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os_freebsd_amd64.go
529
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os_freebsd_arm.go
1.32
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os_freebsd_arm64.go
2.97
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os_freebsd_noauxv.go
254
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os_illumos.go
3.93
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os_js.go
2.93
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os_linux.go
13.16
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os_linux_arm.go
1.35
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os_linux_arm64.go
1.02
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os_linux_be64.go
816
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os_linux_generic.go
916
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os_linux_mips64x.go
999
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os_linux_mipsx.go
1.05
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os_linux_noauxv.go
307
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os_linux_novdso.go
298
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os_linux_ppc64x.go
527
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os_linux_riscv64.go
198
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os_linux_s390x.go
455
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os_linux_x86.go
2.69
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os_netbsd.go
8.49
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os_netbsd_386.go
588
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os_netbsd_amd64.go
585
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os_netbsd_arm.go
1.13
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os_netbsd_arm64.go
827
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os_nonopenbsd.go
436
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os_only_solaris.go
356
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os_openbsd.go
7.81
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os_openbsd_arm.go
749
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os_openbsd_arm64.go
714
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os_plan9.go
9.3
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os_plan9_arm.go
462
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os_solaris.go
6.49
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os_windows.go
37.01
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os_windows_arm.go
511
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panic.go
42.23
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panic32.go
4.79
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plugin.go
4.16
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Code Editor : sys_linux_arm.s
// Copyright 2009 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // // System calls and other sys.stuff for arm, Linux // #include "go_asm.h" #include "go_tls.h" #include "textflag.h" #define CLOCK_REALTIME 0 #define CLOCK_MONOTONIC 1 // for EABI, as we don't support OABI #define SYS_BASE 0x0 #define SYS_exit (SYS_BASE + 1) #define SYS_read (SYS_BASE + 3) #define SYS_write (SYS_BASE + 4) #define SYS_open (SYS_BASE + 5) #define SYS_close (SYS_BASE + 6) #define SYS_getpid (SYS_BASE + 20) #define SYS_kill (SYS_BASE + 37) #define SYS_pipe (SYS_BASE + 42) #define SYS_clone (SYS_BASE + 120) #define SYS_rt_sigreturn (SYS_BASE + 173) #define SYS_rt_sigaction (SYS_BASE + 174) #define SYS_rt_sigprocmask (SYS_BASE + 175) #define SYS_sigaltstack (SYS_BASE + 186) #define SYS_mmap2 (SYS_BASE + 192) #define SYS_futex (SYS_BASE + 240) #define SYS_exit_group (SYS_BASE + 248) #define SYS_munmap (SYS_BASE + 91) #define SYS_madvise (SYS_BASE + 220) #define SYS_setitimer (SYS_BASE + 104) #define SYS_mincore (SYS_BASE + 219) #define SYS_gettid (SYS_BASE + 224) #define SYS_tgkill (SYS_BASE + 268) #define SYS_sched_yield (SYS_BASE + 158) #define SYS_nanosleep (SYS_BASE + 162) #define SYS_sched_getaffinity (SYS_BASE + 242) #define SYS_clock_gettime (SYS_BASE + 263) #define SYS_epoll_create (SYS_BASE + 250) #define SYS_epoll_ctl (SYS_BASE + 251) #define SYS_epoll_wait (SYS_BASE + 252) #define SYS_epoll_create1 (SYS_BASE + 357) #define SYS_pipe2 (SYS_BASE + 359) #define SYS_fcntl (SYS_BASE + 55) #define SYS_access (SYS_BASE + 33) #define SYS_connect (SYS_BASE + 283) #define SYS_socket (SYS_BASE + 281) #define SYS_brk (SYS_BASE + 45) #define ARM_BASE (SYS_BASE + 0x0f0000) TEXT runtime·open(SB),NOSPLIT,$0 MOVW name+0(FP), R0 MOVW mode+4(FP), R1 MOVW perm+8(FP), R2 MOVW $SYS_open, R7 SWI $0 MOVW $0xfffff001, R1 CMP R1, R0 MOVW.HI $-1, R0 MOVW R0, ret+12(FP) RET TEXT runtime·closefd(SB),NOSPLIT,$0 MOVW fd+0(FP), R0 MOVW $SYS_close, R7 SWI $0 MOVW $0xfffff001, R1 CMP R1, R0 MOVW.HI $-1, R0 MOVW R0, ret+4(FP) RET TEXT runtime·write1(SB),NOSPLIT,$0 MOVW fd+0(FP), R0 MOVW p+4(FP), R1 MOVW n+8(FP), R2 MOVW $SYS_write, R7 SWI $0 MOVW R0, ret+12(FP) RET TEXT runtime·read(SB),NOSPLIT,$0 MOVW fd+0(FP), R0 MOVW p+4(FP), R1 MOVW n+8(FP), R2 MOVW $SYS_read, R7 SWI $0 MOVW R0, ret+12(FP) RET // func pipe() (r, w int32, errno int32) TEXT runtime·pipe(SB),NOSPLIT,$0-12 MOVW $r+0(FP), R0 MOVW $SYS_pipe, R7 SWI $0 MOVW R0, errno+8(FP) RET // func pipe2(flags int32) (r, w int32, errno int32) TEXT runtime·pipe2(SB),NOSPLIT,$0-16 MOVW $r+4(FP), R0 MOVW flags+0(FP), R1 MOVW $SYS_pipe2, R7 SWI $0 MOVW R0, errno+12(FP) RET TEXT runtime·exit(SB),NOSPLIT|NOFRAME,$0 MOVW code+0(FP), R0 MOVW $SYS_exit_group, R7 SWI $0 MOVW $1234, R0 MOVW $1002, R1 MOVW R0, (R1) // fail hard TEXT exit1<>(SB),NOSPLIT|NOFRAME,$0 MOVW code+0(FP), R0 MOVW $SYS_exit, R7 SWI $0 MOVW $1234, R0 MOVW $1003, R1 MOVW R0, (R1) // fail hard // func exitThread(wait *uint32) TEXT runtime·exitThread(SB),NOSPLIT|NOFRAME,$0-4 MOVW wait+0(FP), R0 // We're done using the stack. // Alas, there's no reliable way to make this write atomic // without potentially using the stack. So it goes. MOVW $0, R1 MOVW R1, (R0) MOVW $0, R0 // exit code MOVW $SYS_exit, R7 SWI $0 MOVW $1234, R0 MOVW $1004, R1 MOVW R0, (R1) // fail hard JMP 0(PC) TEXT runtime·gettid(SB),NOSPLIT,$0-4 MOVW $SYS_gettid, R7 SWI $0 MOVW R0, ret+0(FP) RET TEXT runtime·raise(SB),NOSPLIT|NOFRAME,$0 MOVW $SYS_getpid, R7 SWI $0 MOVW R0, R4 MOVW $SYS_gettid, R7 SWI $0 MOVW R0, R1 // arg 2 tid MOVW R4, R0 // arg 1 pid MOVW sig+0(FP), R2 // arg 3 MOVW $SYS_tgkill, R7 SWI $0 RET TEXT runtime·raiseproc(SB),NOSPLIT|NOFRAME,$0 MOVW $SYS_getpid, R7 SWI $0 // arg 1 tid already in R0 from getpid MOVW sig+0(FP), R1 // arg 2 - signal MOVW $SYS_kill, R7 SWI $0 RET TEXT ·getpid(SB),NOSPLIT,$0-4 MOVW $SYS_getpid, R7 SWI $0 MOVW R0, ret+0(FP) RET TEXT ·tgkill(SB),NOSPLIT,$0-12 MOVW tgid+0(FP), R0 MOVW tid+4(FP), R1 MOVW sig+8(FP), R2 MOVW $SYS_tgkill, R7 SWI $0 RET TEXT runtime·mmap(SB),NOSPLIT,$0 MOVW addr+0(FP), R0 MOVW n+4(FP), R1 MOVW prot+8(FP), R2 MOVW flags+12(FP), R3 MOVW fd+16(FP), R4 MOVW off+20(FP), R5 MOVW $SYS_mmap2, R7 SWI $0 MOVW $0xfffff001, R6 CMP R6, R0 MOVW $0, R1 RSB.HI $0, R0 MOVW.HI R0, R1 // if error, put in R1 MOVW.HI $0, R0 MOVW R0, p+24(FP) MOVW R1, err+28(FP) RET TEXT runtime·munmap(SB),NOSPLIT,$0 MOVW addr+0(FP), R0 MOVW n+4(FP), R1 MOVW $SYS_munmap, R7 SWI $0 MOVW $0xfffff001, R6 CMP R6, R0 MOVW.HI $0, R8 // crash on syscall failure MOVW.HI R8, (R8) RET TEXT runtime·madvise(SB),NOSPLIT,$0 MOVW addr+0(FP), R0 MOVW n+4(FP), R1 MOVW flags+8(FP), R2 MOVW $SYS_madvise, R7 SWI $0 MOVW R0, ret+12(FP) RET TEXT runtime·setitimer(SB),NOSPLIT,$0 MOVW mode+0(FP), R0 MOVW new+4(FP), R1 MOVW old+8(FP), R2 MOVW $SYS_setitimer, R7 SWI $0 RET TEXT runtime·mincore(SB),NOSPLIT,$0 MOVW addr+0(FP), R0 MOVW n+4(FP), R1 MOVW dst+8(FP), R2 MOVW $SYS_mincore, R7 SWI $0 MOVW R0, ret+12(FP) RET TEXT runtime·walltime1(SB),NOSPLIT,$0-12 // We don't know how much stack space the VDSO code will need, // so switch to g0. // Save old SP. Use R13 instead of SP to avoid linker rewriting the offsets. MOVW R13, R4 // R4 is unchanged by C code. MOVW g_m(g), R5 // R5 is unchanged by C code. // Set vdsoPC and vdsoSP for SIGPROF traceback. MOVW LR, m_vdsoPC(R5) MOVW R13, m_vdsoSP(R5) MOVW m_curg(R5), R0 CMP g, R0 // Only switch if on curg. B.NE noswitch MOVW m_g0(R5), R0 MOVW (g_sched+gobuf_sp)(R0), R13 // Set SP to g0 stack noswitch: SUB $24, R13 // Space for results BIC $0x7, R13 // Align for C code MOVW $CLOCK_REALTIME, R0 MOVW $8(R13), R1 // timespec MOVW runtime·vdsoClockgettimeSym(SB), R2 CMP $0, R2 B.EQ fallback // Store g on gsignal's stack, so if we receive a signal // during VDSO code we can find the g. // If we don't have a signal stack, we won't receive signal, // so don't bother saving g. // When using cgo, we already saved g on TLS, also don't save // g here. // Also don't save g if we are already on the signal stack. // We won't get a nested signal. MOVB runtime·iscgo(SB), R6 CMP $0, R6 BNE nosaveg MOVW m_gsignal(R5), R6 // g.m.gsignal CMP $0, R6 BEQ nosaveg CMP g, R6 BEQ nosaveg MOVW (g_stack+stack_lo)(R6), R6 // g.m.gsignal.stack.lo MOVW g, (R6) BL (R2) MOVW $0, R1 MOVW R1, (R6) // clear g slot, R6 is unchanged by C code JMP finish nosaveg: BL (R2) JMP finish fallback: MOVW $SYS_clock_gettime, R7 SWI $0 finish: MOVW 8(R13), R0 // sec MOVW 12(R13), R2 // nsec MOVW R4, R13 // Restore real SP MOVW $0, R1 MOVW R1, m_vdsoSP(R5) MOVW R0, sec_lo+0(FP) MOVW R1, sec_hi+4(FP) MOVW R2, nsec+8(FP) RET // int64 nanotime1(void) TEXT runtime·nanotime1(SB),NOSPLIT,$0-8 // Switch to g0 stack. See comment above in runtime·walltime. // Save old SP. Use R13 instead of SP to avoid linker rewriting the offsets. MOVW R13, R4 // R4 is unchanged by C code. MOVW g_m(g), R5 // R5 is unchanged by C code. // Set vdsoPC and vdsoSP for SIGPROF traceback. MOVW LR, m_vdsoPC(R5) MOVW R13, m_vdsoSP(R5) MOVW m_curg(R5), R0 CMP g, R0 // Only switch if on curg. B.NE noswitch MOVW m_g0(R5), R0 MOVW (g_sched+gobuf_sp)(R0), R13 // Set SP to g0 stack noswitch: SUB $24, R13 // Space for results BIC $0x7, R13 // Align for C code MOVW $CLOCK_MONOTONIC, R0 MOVW $8(R13), R1 // timespec MOVW runtime·vdsoClockgettimeSym(SB), R2 CMP $0, R2 B.EQ fallback // Store g on gsignal's stack, so if we receive a signal // during VDSO code we can find the g. // If we don't have a signal stack, we won't receive signal, // so don't bother saving g. // When using cgo, we already saved g on TLS, also don't save // g here. // Also don't save g if we are already on the signal stack. // We won't get a nested signal. MOVB runtime·iscgo(SB), R6 CMP $0, R6 BNE nosaveg MOVW m_gsignal(R5), R6 // g.m.gsignal CMP $0, R6 BEQ nosaveg CMP g, R6 BEQ nosaveg MOVW (g_stack+stack_lo)(R6), R6 // g.m.gsignal.stack.lo MOVW g, (R6) BL (R2) MOVW $0, R1 MOVW R1, (R6) // clear g slot, R6 is unchanged by C code JMP finish nosaveg: BL (R2) JMP finish fallback: MOVW $SYS_clock_gettime, R7 SWI $0 finish: MOVW 8(R13), R0 // sec MOVW 12(R13), R2 // nsec MOVW R4, R13 // Restore real SP MOVW $0, R4 MOVW R4, m_vdsoSP(R5) MOVW $1000000000, R3 MULLU R0, R3, (R1, R0) ADD.S R2, R0 ADC R4, R1 MOVW R0, ret_lo+0(FP) MOVW R1, ret_hi+4(FP) RET // int32 futex(int32 *uaddr, int32 op, int32 val, // struct timespec *timeout, int32 *uaddr2, int32 val2); TEXT runtime·futex(SB),NOSPLIT,$0 MOVW addr+0(FP), R0 MOVW op+4(FP), R1 MOVW val+8(FP), R2 MOVW ts+12(FP), R3 MOVW addr2+16(FP), R4 MOVW val3+20(FP), R5 MOVW $SYS_futex, R7 SWI $0 MOVW R0, ret+24(FP) RET // int32 clone(int32 flags, void *stack, M *mp, G *gp, void (*fn)(void)); TEXT runtime·clone(SB),NOSPLIT,$0 MOVW flags+0(FP), R0 MOVW stk+4(FP), R1 MOVW $0, R2 // parent tid ptr MOVW $0, R3 // tls_val MOVW $0, R4 // child tid ptr MOVW $0, R5 // Copy mp, gp, fn off parent stack for use by child. MOVW $-16(R1), R1 MOVW mp+8(FP), R6 MOVW R6, 0(R1) MOVW gp+12(FP), R6 MOVW R6, 4(R1) MOVW fn+16(FP), R6 MOVW R6, 8(R1) MOVW $1234, R6 MOVW R6, 12(R1) MOVW $SYS_clone, R7 SWI $0 // In parent, return. CMP $0, R0 BEQ 3(PC) MOVW R0, ret+20(FP) RET // Paranoia: check that SP is as we expect. Use R13 to avoid linker 'fixup' NOP R13 // tell vet SP/R13 changed - stop checking offsets MOVW 12(R13), R0 MOVW $1234, R1 CMP R0, R1 BEQ 2(PC) BL runtime·abort(SB) MOVW 0(R13), R8 // m MOVW 4(R13), R0 // g CMP $0, R8 BEQ nog CMP $0, R0 BEQ nog MOVW R0, g MOVW R8, g_m(g) // paranoia; check they are not nil MOVW 0(R8), R0 MOVW 0(g), R0 BL runtime·emptyfunc(SB) // fault if stack check is wrong // Initialize m->procid to Linux tid MOVW $SYS_gettid, R7 SWI $0 MOVW g_m(g), R8 MOVW R0, m_procid(R8) nog: // Call fn MOVW 8(R13), R0 MOVW $16(R13), R13 BL (R0) // It shouldn't return. If it does, exit that thread. SUB $16, R13 // restore the stack pointer to avoid memory corruption MOVW $0, R0 MOVW R0, 4(R13) BL exit1<>(SB) MOVW $1234, R0 MOVW $1005, R1 MOVW R0, (R1) TEXT runtime·sigaltstack(SB),NOSPLIT,$0 MOVW new+0(FP), R0 MOVW old+4(FP), R1 MOVW $SYS_sigaltstack, R7 SWI $0 MOVW $0xfffff001, R6 CMP R6, R0 MOVW.HI $0, R8 // crash on syscall failure MOVW.HI R8, (R8) RET TEXT runtime·sigfwd(SB),NOSPLIT,$0-16 MOVW sig+4(FP), R0 MOVW info+8(FP), R1 MOVW ctx+12(FP), R2 MOVW fn+0(FP), R11 MOVW R13, R4 SUB $24, R13 BIC $0x7, R13 // alignment for ELF ABI BL (R11) MOVW R4, R13 RET TEXT runtime·sigtramp(SB),NOSPLIT,$0 // Reserve space for callee-save registers and arguments. MOVM.DB.W [R4-R11], (R13) SUB $16, R13 // this might be called in external code context, // where g is not set. // first save R0, because runtime·load_g will clobber it MOVW R0, 4(R13) MOVB runtime·iscgo(SB), R0 CMP $0, R0 BL.NE runtime·load_g(SB) MOVW R1, 8(R13) MOVW R2, 12(R13) MOVW $runtime·sigtrampgo(SB), R11 BL (R11) // Restore callee-save registers. ADD $16, R13 MOVM.IA.W (R13), [R4-R11] RET TEXT runtime·cgoSigtramp(SB),NOSPLIT,$0 MOVW $runtime·sigtramp(SB), R11 B (R11) TEXT runtime·rtsigprocmask(SB),NOSPLIT,$0 MOVW how+0(FP), R0 MOVW new+4(FP), R1 MOVW old+8(FP), R2 MOVW size+12(FP), R3 MOVW $SYS_rt_sigprocmask, R7 SWI $0 RET TEXT runtime·rt_sigaction(SB),NOSPLIT,$0 MOVW sig+0(FP), R0 MOVW new+4(FP), R1 MOVW old+8(FP), R2 MOVW size+12(FP), R3 MOVW $SYS_rt_sigaction, R7 SWI $0 MOVW R0, ret+16(FP) RET TEXT runtime·usleep(SB),NOSPLIT,$12 MOVW usec+0(FP), R0 CALL runtime·usplitR0(SB) MOVW R0, 4(R13) MOVW $1000, R0 // usec to nsec MUL R0, R1 MOVW R1, 8(R13) MOVW $4(R13), R0 MOVW $0, R1 MOVW $SYS_nanosleep, R7 SWI $0 RET // As for cas, memory barriers are complicated on ARM, but the kernel // provides a user helper. ARMv5 does not support SMP and has no // memory barrier instruction at all. ARMv6 added SMP support and has // a memory barrier, but it requires writing to a coprocessor // register. ARMv7 introduced the DMB instruction, but it's expensive // even on single-core devices. The kernel helper takes care of all of // this for us. TEXT kernelPublicationBarrier<>(SB),NOSPLIT,$0 // void __kuser_memory_barrier(void); MOVW $0xffff0fa0, R11 CALL (R11) RET TEXT ·publicationBarrier(SB),NOSPLIT,$0 MOVB ·goarm(SB), R11 CMP $7, R11 BLT 2(PC) JMP ·armPublicationBarrier(SB) JMP kernelPublicationBarrier<>(SB) // extra layer so this function is leaf and no SP adjustment on GOARM=7 TEXT runtime·osyield(SB),NOSPLIT,$0 MOVW $SYS_sched_yield, R7 SWI $0 RET TEXT runtime·sched_getaffinity(SB),NOSPLIT,$0 MOVW pid+0(FP), R0 MOVW len+4(FP), R1 MOVW buf+8(FP), R2 MOVW $SYS_sched_getaffinity, R7 SWI $0 MOVW R0, ret+12(FP) RET // int32 runtime·epollcreate(int32 size) TEXT runtime·epollcreate(SB),NOSPLIT,$0 MOVW size+0(FP), R0 MOVW $SYS_epoll_create, R7 SWI $0 MOVW R0, ret+4(FP) RET // int32 runtime·epollcreate1(int32 flags) TEXT runtime·epollcreate1(SB),NOSPLIT,$0 MOVW flags+0(FP), R0 MOVW $SYS_epoll_create1, R7 SWI $0 MOVW R0, ret+4(FP) RET // func epollctl(epfd, op, fd int32, ev *epollEvent) int TEXT runtime·epollctl(SB),NOSPLIT,$0 MOVW epfd+0(FP), R0 MOVW op+4(FP), R1 MOVW fd+8(FP), R2 MOVW ev+12(FP), R3 MOVW $SYS_epoll_ctl, R7 SWI $0 MOVW R0, ret+16(FP) RET // int32 runtime·epollwait(int32 epfd, EpollEvent *ev, int32 nev, int32 timeout) TEXT runtime·epollwait(SB),NOSPLIT,$0 MOVW epfd+0(FP), R0 MOVW ev+4(FP), R1 MOVW nev+8(FP), R2 MOVW timeout+12(FP), R3 MOVW $SYS_epoll_wait, R7 SWI $0 MOVW R0, ret+16(FP) RET // void runtime·closeonexec(int32 fd) TEXT runtime·closeonexec(SB),NOSPLIT,$0 MOVW fd+0(FP), R0 // fd MOVW $2, R1 // F_SETFD MOVW $1, R2 // FD_CLOEXEC MOVW $SYS_fcntl, R7 SWI $0 RET // func runtime·setNonblock(fd int32) TEXT runtime·setNonblock(SB),NOSPLIT,$0-4 MOVW fd+0(FP), R0 // fd MOVW $3, R1 // F_GETFL MOVW $0, R2 MOVW $SYS_fcntl, R7 SWI $0 ORR $0x800, R0, R2 // O_NONBLOCK MOVW fd+0(FP), R0 // fd MOVW $4, R1 // F_SETFL MOVW $SYS_fcntl, R7 SWI $0 RET // b __kuser_get_tls @ 0xffff0fe0 TEXT runtime·read_tls_fallback(SB),NOSPLIT|NOFRAME,$0 MOVW $0xffff0fe0, R0 B (R0) TEXT runtime·access(SB),NOSPLIT,$0 MOVW name+0(FP), R0 MOVW mode+4(FP), R1 MOVW $SYS_access, R7 SWI $0 MOVW R0, ret+8(FP) RET TEXT runtime·connect(SB),NOSPLIT,$0 MOVW fd+0(FP), R0 MOVW addr+4(FP), R1 MOVW len+8(FP), R2 MOVW $SYS_connect, R7 SWI $0 MOVW R0, ret+12(FP) RET TEXT runtime·socket(SB),NOSPLIT,$0 MOVW domain+0(FP), R0 MOVW typ+4(FP), R1 MOVW prot+8(FP), R2 MOVW $SYS_socket, R7 SWI $0 MOVW R0, ret+12(FP) RET // func sbrk0() uintptr TEXT runtime·sbrk0(SB),NOSPLIT,$0-4 // Implemented as brk(NULL). MOVW $0, R0 MOVW $SYS_brk, R7 SWI $0 MOVW R0, ret+0(FP) RET TEXT runtime·sigreturn(SB),NOSPLIT,$0-0 RET
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