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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_amd64.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 AMD64, Linux // #include "go_asm.h" #include "go_tls.h" #include "textflag.h" #define AT_FDCWD -100 #define SYS_read 0 #define SYS_write 1 #define SYS_close 3 #define SYS_mmap 9 #define SYS_munmap 11 #define SYS_brk 12 #define SYS_rt_sigaction 13 #define SYS_rt_sigprocmask 14 #define SYS_rt_sigreturn 15 #define SYS_pipe 22 #define SYS_sched_yield 24 #define SYS_mincore 27 #define SYS_madvise 28 #define SYS_nanosleep 35 #define SYS_setittimer 38 #define SYS_getpid 39 #define SYS_socket 41 #define SYS_connect 42 #define SYS_clone 56 #define SYS_exit 60 #define SYS_kill 62 #define SYS_uname 63 #define SYS_fcntl 72 #define SYS_sigaltstack 131 #define SYS_mlock 149 #define SYS_arch_prctl 158 #define SYS_gettid 186 #define SYS_futex 202 #define SYS_sched_getaffinity 204 #define SYS_epoll_create 213 #define SYS_exit_group 231 #define SYS_epoll_ctl 233 #define SYS_tgkill 234 #define SYS_openat 257 #define SYS_faccessat 269 #define SYS_epoll_pwait 281 #define SYS_epoll_create1 291 #define SYS_pipe2 293 TEXT runtime·exit(SB),NOSPLIT,$0-4 MOVL code+0(FP), DI MOVL $SYS_exit_group, AX SYSCALL RET // func exitThread(wait *uint32) TEXT runtime·exitThread(SB),NOSPLIT,$0-8 MOVQ wait+0(FP), AX // We're done using the stack. MOVL $0, (AX) MOVL $0, DI // exit code MOVL $SYS_exit, AX SYSCALL // We may not even have a stack any more. INT $3 JMP 0(PC) TEXT runtime·open(SB),NOSPLIT,$0-20 // This uses openat instead of open, because Android O blocks open. MOVL $AT_FDCWD, DI // AT_FDCWD, so this acts like open MOVQ name+0(FP), SI MOVL mode+8(FP), DX MOVL perm+12(FP), R10 MOVL $SYS_openat, AX SYSCALL CMPQ AX, $0xfffffffffffff001 JLS 2(PC) MOVL $-1, AX MOVL AX, ret+16(FP) RET TEXT runtime·closefd(SB),NOSPLIT,$0-12 MOVL fd+0(FP), DI MOVL $SYS_close, AX SYSCALL CMPQ AX, $0xfffffffffffff001 JLS 2(PC) MOVL $-1, AX MOVL AX, ret+8(FP) RET TEXT runtime·write1(SB),NOSPLIT,$0-28 MOVQ fd+0(FP), DI MOVQ p+8(FP), SI MOVL n+16(FP), DX MOVL $SYS_write, AX SYSCALL MOVL AX, ret+24(FP) RET TEXT runtime·read(SB),NOSPLIT,$0-28 MOVL fd+0(FP), DI MOVQ p+8(FP), SI MOVL n+16(FP), DX MOVL $SYS_read, AX SYSCALL MOVL AX, ret+24(FP) RET // func pipe() (r, w int32, errno int32) TEXT runtime·pipe(SB),NOSPLIT,$0-12 LEAQ r+0(FP), DI MOVL $SYS_pipe, AX SYSCALL MOVL AX, errno+8(FP) RET // func pipe2(flags int32) (r, w int32, errno int32) TEXT runtime·pipe2(SB),NOSPLIT,$0-20 LEAQ r+8(FP), DI MOVL flags+0(FP), SI MOVL $SYS_pipe2, AX SYSCALL MOVL AX, errno+16(FP) RET TEXT runtime·usleep(SB),NOSPLIT,$16 MOVL $0, DX MOVL usec+0(FP), AX MOVL $1000000, CX DIVL CX MOVQ AX, 0(SP) MOVL $1000, AX // usec to nsec MULL DX MOVQ AX, 8(SP) // nanosleep(&ts, 0) MOVQ SP, DI MOVL $0, SI MOVL $SYS_nanosleep, AX SYSCALL RET TEXT runtime·gettid(SB),NOSPLIT,$0-4 MOVL $SYS_gettid, AX SYSCALL MOVL AX, ret+0(FP) RET TEXT runtime·raise(SB),NOSPLIT,$0 MOVL $SYS_getpid, AX SYSCALL MOVL AX, R12 MOVL $SYS_gettid, AX SYSCALL MOVL AX, SI // arg 2 tid MOVL R12, DI // arg 1 pid MOVL sig+0(FP), DX // arg 3 MOVL $SYS_tgkill, AX SYSCALL RET TEXT runtime·raiseproc(SB),NOSPLIT,$0 MOVL $SYS_getpid, AX SYSCALL MOVL AX, DI // arg 1 pid MOVL sig+0(FP), SI // arg 2 MOVL $SYS_kill, AX SYSCALL RET TEXT ·getpid(SB),NOSPLIT,$0-8 MOVL $SYS_getpid, AX SYSCALL MOVQ AX, ret+0(FP) RET TEXT ·tgkill(SB),NOSPLIT,$0 MOVQ tgid+0(FP), DI MOVQ tid+8(FP), SI MOVQ sig+16(FP), DX MOVL $SYS_tgkill, AX SYSCALL RET TEXT runtime·setitimer(SB),NOSPLIT,$0-24 MOVL mode+0(FP), DI MOVQ new+8(FP), SI MOVQ old+16(FP), DX MOVL $SYS_setittimer, AX SYSCALL RET TEXT runtime·mincore(SB),NOSPLIT,$0-28 MOVQ addr+0(FP), DI MOVQ n+8(FP), SI MOVQ dst+16(FP), DX MOVL $SYS_mincore, AX SYSCALL MOVL AX, ret+24(FP) RET // func walltime1() (sec int64, nsec int32) // non-zero frame-size means bp is saved and restored TEXT runtime·walltime1(SB),NOSPLIT,$8-12 // We don't know how much stack space the VDSO code will need, // so switch to g0. // In particular, a kernel configured with CONFIG_OPTIMIZE_INLINING=n // and hardening can use a full page of stack space in gettime_sym // due to stack probes inserted to avoid stack/heap collisions. // See issue #20427. MOVQ SP, BP // Save old SP; BP unchanged by C code. get_tls(CX) MOVQ g(CX), AX MOVQ g_m(AX), BX // BX unchanged by C code. // Set vdsoPC and vdsoSP for SIGPROF traceback. LEAQ sec+0(FP), DX MOVQ -8(DX), CX MOVQ CX, m_vdsoPC(BX) MOVQ DX, m_vdsoSP(BX) CMPQ AX, m_curg(BX) // Only switch if on curg. JNE noswitch MOVQ m_g0(BX), DX MOVQ (g_sched+gobuf_sp)(DX), SP // Set SP to g0 stack noswitch: SUBQ $16, SP // Space for results ANDQ $~15, SP // Align for C code MOVQ runtime·vdsoClockgettimeSym(SB), AX CMPQ AX, $0 JEQ fallback MOVL $0, DI // CLOCK_REALTIME LEAQ 0(SP), SI CALL AX MOVQ 0(SP), AX // sec MOVQ 8(SP), DX // nsec MOVQ BP, SP // Restore real SP MOVQ $0, m_vdsoSP(BX) MOVQ AX, sec+0(FP) MOVL DX, nsec+8(FP) RET fallback: LEAQ 0(SP), DI MOVQ $0, SI MOVQ runtime·vdsoGettimeofdaySym(SB), AX CALL AX MOVQ 0(SP), AX // sec MOVL 8(SP), DX // usec IMULQ $1000, DX MOVQ BP, SP // Restore real SP MOVQ $0, m_vdsoSP(BX) MOVQ AX, sec+0(FP) MOVL DX, nsec+8(FP) RET // func nanotime1() int64 // non-zero frame-size means bp is saved and restored TEXT runtime·nanotime1(SB),NOSPLIT,$8-8 // Switch to g0 stack. See comment above in runtime·walltime. MOVQ SP, BP // Save old SP; BP unchanged by C code. get_tls(CX) MOVQ g(CX), AX MOVQ g_m(AX), BX // BX unchanged by C code. // Set vdsoPC and vdsoSP for SIGPROF traceback. LEAQ ret+0(FP), DX MOVQ -8(DX), CX MOVQ CX, m_vdsoPC(BX) MOVQ DX, m_vdsoSP(BX) CMPQ AX, m_curg(BX) // Only switch if on curg. JNE noswitch MOVQ m_g0(BX), DX MOVQ (g_sched+gobuf_sp)(DX), SP // Set SP to g0 stack noswitch: SUBQ $16, SP // Space for results ANDQ $~15, SP // Align for C code MOVQ runtime·vdsoClockgettimeSym(SB), AX CMPQ AX, $0 JEQ fallback MOVL $1, DI // CLOCK_MONOTONIC LEAQ 0(SP), SI CALL AX MOVQ 0(SP), AX // sec MOVQ 8(SP), DX // nsec MOVQ BP, SP // Restore real SP MOVQ $0, m_vdsoSP(BX) // sec is in AX, nsec in DX // return nsec in AX IMULQ $1000000000, AX ADDQ DX, AX MOVQ AX, ret+0(FP) RET fallback: LEAQ 0(SP), DI MOVQ $0, SI MOVQ runtime·vdsoGettimeofdaySym(SB), AX CALL AX MOVQ 0(SP), AX // sec MOVL 8(SP), DX // usec MOVQ BP, SP // Restore real SP MOVQ $0, m_vdsoSP(BX) IMULQ $1000, DX // sec is in AX, nsec in DX // return nsec in AX IMULQ $1000000000, AX ADDQ DX, AX MOVQ AX, ret+0(FP) RET TEXT runtime·rtsigprocmask(SB),NOSPLIT,$0-28 MOVL how+0(FP), DI MOVQ new+8(FP), SI MOVQ old+16(FP), DX MOVL size+24(FP), R10 MOVL $SYS_rt_sigprocmask, AX SYSCALL CMPQ AX, $0xfffffffffffff001 JLS 2(PC) MOVL $0xf1, 0xf1 // crash RET TEXT runtime·rt_sigaction(SB),NOSPLIT,$0-36 MOVQ sig+0(FP), DI MOVQ new+8(FP), SI MOVQ old+16(FP), DX MOVQ size+24(FP), R10 MOVL $SYS_rt_sigaction, AX SYSCALL MOVL AX, ret+32(FP) RET // Call the function stored in _cgo_sigaction using the GCC calling convention. TEXT runtime·callCgoSigaction(SB),NOSPLIT,$16 MOVQ sig+0(FP), DI MOVQ new+8(FP), SI MOVQ old+16(FP), DX MOVQ _cgo_sigaction(SB), AX MOVQ SP, BX // callee-saved ANDQ $~15, SP // alignment as per amd64 psABI CALL AX MOVQ BX, SP MOVL AX, ret+24(FP) RET TEXT runtime·sigfwd(SB),NOSPLIT,$0-32 MOVQ fn+0(FP), AX MOVL sig+8(FP), DI MOVQ info+16(FP), SI MOVQ ctx+24(FP), DX PUSHQ BP MOVQ SP, BP ANDQ $~15, SP // alignment for x86_64 ABI CALL AX MOVQ BP, SP POPQ BP RET TEXT runtime·sigtramp(SB),NOSPLIT,$72 // Save callee-saved C registers, since the caller may be a C signal handler. MOVQ BX, bx-8(SP) MOVQ BP, bp-16(SP) // save in case GOEXPERIMENT=noframepointer is set MOVQ R12, r12-24(SP) MOVQ R13, r13-32(SP) MOVQ R14, r14-40(SP) MOVQ R15, r15-48(SP) // We don't save mxcsr or the x87 control word because sigtrampgo doesn't // modify them. MOVQ DX, ctx-56(SP) MOVQ SI, info-64(SP) MOVQ DI, signum-72(SP) MOVQ $runtime·sigtrampgo(SB), AX CALL AX MOVQ r15-48(SP), R15 MOVQ r14-40(SP), R14 MOVQ r13-32(SP), R13 MOVQ r12-24(SP), R12 MOVQ bp-16(SP), BP MOVQ bx-8(SP), BX RET // Used instead of sigtramp in programs that use cgo. // Arguments from kernel are in DI, SI, DX. TEXT runtime·cgoSigtramp(SB),NOSPLIT,$0 // If no traceback function, do usual sigtramp. MOVQ runtime·cgoTraceback(SB), AX TESTQ AX, AX JZ sigtramp // If no traceback support function, which means that // runtime/cgo was not linked in, do usual sigtramp. MOVQ _cgo_callers(SB), AX TESTQ AX, AX JZ sigtramp // Figure out if we are currently in a cgo call. // If not, just do usual sigtramp. get_tls(CX) MOVQ g(CX),AX TESTQ AX, AX JZ sigtrampnog // g == nil MOVQ g_m(AX), AX TESTQ AX, AX JZ sigtramp // g.m == nil MOVL m_ncgo(AX), CX TESTL CX, CX JZ sigtramp // g.m.ncgo == 0 MOVQ m_curg(AX), CX TESTQ CX, CX JZ sigtramp // g.m.curg == nil MOVQ g_syscallsp(CX), CX TESTQ CX, CX JZ sigtramp // g.m.curg.syscallsp == 0 MOVQ m_cgoCallers(AX), R8 TESTQ R8, R8 JZ sigtramp // g.m.cgoCallers == nil MOVL m_cgoCallersUse(AX), CX TESTL CX, CX JNZ sigtramp // g.m.cgoCallersUse != 0 // Jump to a function in runtime/cgo. // That function, written in C, will call the user's traceback // function with proper unwind info, and will then call back here. // The first three arguments, and the fifth, are already in registers. // Set the two remaining arguments now. MOVQ runtime·cgoTraceback(SB), CX MOVQ $runtime·sigtramp(SB), R9 MOVQ _cgo_callers(SB), AX JMP AX sigtramp: JMP runtime·sigtramp(SB) sigtrampnog: // Signal arrived on a non-Go thread. If this is SIGPROF, get a // stack trace. CMPL DI, $27 // 27 == SIGPROF JNZ sigtramp // Lock sigprofCallersUse. MOVL $0, AX MOVL $1, CX MOVQ $runtime·sigprofCallersUse(SB), R11 LOCK CMPXCHGL CX, 0(R11) JNZ sigtramp // Skip stack trace if already locked. // Jump to the traceback function in runtime/cgo. // It will call back to sigprofNonGo, which will ignore the // arguments passed in registers. // First three arguments to traceback function are in registers already. MOVQ runtime·cgoTraceback(SB), CX MOVQ $runtime·sigprofCallers(SB), R8 MOVQ $runtime·sigprofNonGo(SB), R9 MOVQ _cgo_callers(SB), AX JMP AX // For cgo unwinding to work, this function must look precisely like // the one in glibc. The glibc source code is: // https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/x86_64/sigaction.c // The code that cares about the precise instructions used is: // https://gcc.gnu.org/viewcvs/gcc/trunk/libgcc/config/i386/linux-unwind.h?revision=219188&view=markup TEXT runtime·sigreturn(SB),NOSPLIT,$0 MOVQ $SYS_rt_sigreturn, AX SYSCALL INT $3 // not reached TEXT runtime·sysMmap(SB),NOSPLIT,$0 MOVQ addr+0(FP), DI MOVQ n+8(FP), SI MOVL prot+16(FP), DX MOVL flags+20(FP), R10 MOVL fd+24(FP), R8 MOVL off+28(FP), R9 MOVL $SYS_mmap, AX SYSCALL CMPQ AX, $0xfffffffffffff001 JLS ok NOTQ AX INCQ AX MOVQ $0, p+32(FP) MOVQ AX, err+40(FP) RET ok: MOVQ AX, p+32(FP) MOVQ $0, err+40(FP) RET // Call the function stored in _cgo_mmap using the GCC calling convention. // This must be called on the system stack. TEXT runtime·callCgoMmap(SB),NOSPLIT,$16 MOVQ addr+0(FP), DI MOVQ n+8(FP), SI MOVL prot+16(FP), DX MOVL flags+20(FP), CX MOVL fd+24(FP), R8 MOVL off+28(FP), R9 MOVQ _cgo_mmap(SB), AX MOVQ SP, BX ANDQ $~15, SP // alignment as per amd64 psABI MOVQ BX, 0(SP) CALL AX MOVQ 0(SP), SP MOVQ AX, ret+32(FP) RET TEXT runtime·sysMunmap(SB),NOSPLIT,$0 MOVQ addr+0(FP), DI MOVQ n+8(FP), SI MOVQ $SYS_munmap, AX SYSCALL CMPQ AX, $0xfffffffffffff001 JLS 2(PC) MOVL $0xf1, 0xf1 // crash RET // Call the function stored in _cgo_munmap using the GCC calling convention. // This must be called on the system stack. TEXT runtime·callCgoMunmap(SB),NOSPLIT,$16-16 MOVQ addr+0(FP), DI MOVQ n+8(FP), SI MOVQ _cgo_munmap(SB), AX MOVQ SP, BX ANDQ $~15, SP // alignment as per amd64 psABI MOVQ BX, 0(SP) CALL AX MOVQ 0(SP), SP RET TEXT runtime·madvise(SB),NOSPLIT,$0 MOVQ addr+0(FP), DI MOVQ n+8(FP), SI MOVL flags+16(FP), DX MOVQ $SYS_madvise, AX SYSCALL MOVL AX, ret+24(FP) RET // int64 futex(int32 *uaddr, int32 op, int32 val, // struct timespec *timeout, int32 *uaddr2, int32 val2); TEXT runtime·futex(SB),NOSPLIT,$0 MOVQ addr+0(FP), DI MOVL op+8(FP), SI MOVL val+12(FP), DX MOVQ ts+16(FP), R10 MOVQ addr2+24(FP), R8 MOVL val3+32(FP), R9 MOVL $SYS_futex, AX SYSCALL MOVL AX, ret+40(FP) RET // int32 clone(int32 flags, void *stk, M *mp, G *gp, void (*fn)(void)); TEXT runtime·clone(SB),NOSPLIT,$0 MOVL flags+0(FP), DI MOVQ stk+8(FP), SI MOVQ $0, DX MOVQ $0, R10 // Copy mp, gp, fn off parent stack for use by child. // Careful: Linux system call clobbers CX and R11. MOVQ mp+16(FP), R8 MOVQ gp+24(FP), R9 MOVQ fn+32(FP), R12 MOVL $SYS_clone, AX SYSCALL // In parent, return. CMPQ AX, $0 JEQ 3(PC) MOVL AX, ret+40(FP) RET // In child, on new stack. MOVQ SI, SP // If g or m are nil, skip Go-related setup. CMPQ R8, $0 // m JEQ nog CMPQ R9, $0 // g JEQ nog // Initialize m->procid to Linux tid MOVL $SYS_gettid, AX SYSCALL MOVQ AX, m_procid(R8) // Set FS to point at m->tls. LEAQ m_tls(R8), DI CALL runtime·settls(SB) // In child, set up new stack get_tls(CX) MOVQ R8, g_m(R9) MOVQ R9, g(CX) CALL runtime·stackcheck(SB) nog: // Call fn CALL R12 // It shouldn't return. If it does, exit that thread. MOVL $111, DI MOVL $SYS_exit, AX SYSCALL JMP -3(PC) // keep exiting TEXT runtime·sigaltstack(SB),NOSPLIT,$-8 MOVQ new+0(FP), DI MOVQ old+8(FP), SI MOVQ $SYS_sigaltstack, AX SYSCALL CMPQ AX, $0xfffffffffffff001 JLS 2(PC) MOVL $0xf1, 0xf1 // crash RET // set tls base to DI TEXT runtime·settls(SB),NOSPLIT,$32 #ifdef GOOS_android // Android stores the TLS offset in runtime·tls_g. SUBQ runtime·tls_g(SB), DI #else ADDQ $8, DI // ELF wants to use -8(FS) #endif MOVQ DI, SI MOVQ $0x1002, DI // ARCH_SET_FS MOVQ $SYS_arch_prctl, AX SYSCALL CMPQ AX, $0xfffffffffffff001 JLS 2(PC) MOVL $0xf1, 0xf1 // crash RET TEXT runtime·osyield(SB),NOSPLIT,$0 MOVL $SYS_sched_yield, AX SYSCALL RET TEXT runtime·sched_getaffinity(SB),NOSPLIT,$0 MOVQ pid+0(FP), DI MOVQ len+8(FP), SI MOVQ buf+16(FP), DX MOVL $SYS_sched_getaffinity, AX SYSCALL MOVL AX, ret+24(FP) RET // int32 runtime·epollcreate(int32 size); TEXT runtime·epollcreate(SB),NOSPLIT,$0 MOVL size+0(FP), DI MOVL $SYS_epoll_create, AX SYSCALL MOVL AX, ret+8(FP) RET // int32 runtime·epollcreate1(int32 flags); TEXT runtime·epollcreate1(SB),NOSPLIT,$0 MOVL flags+0(FP), DI MOVL $SYS_epoll_create1, AX SYSCALL MOVL AX, ret+8(FP) RET // func epollctl(epfd, op, fd int32, ev *epollEvent) int TEXT runtime·epollctl(SB),NOSPLIT,$0 MOVL epfd+0(FP), DI MOVL op+4(FP), SI MOVL fd+8(FP), DX MOVQ ev+16(FP), R10 MOVL $SYS_epoll_ctl, AX SYSCALL MOVL AX, ret+24(FP) RET // int32 runtime·epollwait(int32 epfd, EpollEvent *ev, int32 nev, int32 timeout); TEXT runtime·epollwait(SB),NOSPLIT,$0 // This uses pwait instead of wait, because Android O blocks wait. MOVL epfd+0(FP), DI MOVQ ev+8(FP), SI MOVL nev+16(FP), DX MOVL timeout+20(FP), R10 MOVQ $0, R8 MOVL $SYS_epoll_pwait, AX SYSCALL MOVL AX, ret+24(FP) RET // void runtime·closeonexec(int32 fd); TEXT runtime·closeonexec(SB),NOSPLIT,$0 MOVL fd+0(FP), DI // fd MOVQ $2, SI // F_SETFD MOVQ $1, DX // FD_CLOEXEC MOVL $SYS_fcntl, AX SYSCALL RET // func runtime·setNonblock(int32 fd) TEXT runtime·setNonblock(SB),NOSPLIT,$0-4 MOVL fd+0(FP), DI // fd MOVQ $3, SI // F_GETFL MOVQ $0, DX MOVL $SYS_fcntl, AX SYSCALL MOVL fd+0(FP), DI // fd MOVQ $4, SI // F_SETFL MOVQ $0x800, DX // O_NONBLOCK ORL AX, DX MOVL $SYS_fcntl, AX SYSCALL RET // int access(const char *name, int mode) TEXT runtime·access(SB),NOSPLIT,$0 // This uses faccessat instead of access, because Android O blocks access. MOVL $AT_FDCWD, DI // AT_FDCWD, so this acts like access MOVQ name+0(FP), SI MOVL mode+8(FP), DX MOVL $0, R10 MOVL $SYS_faccessat, AX SYSCALL MOVL AX, ret+16(FP) RET // int connect(int fd, const struct sockaddr *addr, socklen_t addrlen) TEXT runtime·connect(SB),NOSPLIT,$0-28 MOVL fd+0(FP), DI MOVQ addr+8(FP), SI MOVL len+16(FP), DX MOVL $SYS_connect, AX SYSCALL MOVL AX, ret+24(FP) RET // int socket(int domain, int type, int protocol) TEXT runtime·socket(SB),NOSPLIT,$0-20 MOVL domain+0(FP), DI MOVL typ+4(FP), SI MOVL prot+8(FP), DX MOVL $SYS_socket, AX SYSCALL MOVL AX, ret+16(FP) RET // func sbrk0() uintptr TEXT runtime·sbrk0(SB),NOSPLIT,$0-8 // Implemented as brk(NULL). MOVQ $0, DI MOVL $SYS_brk, AX SYSCALL MOVQ AX, ret+0(FP) RET // func uname(utsname *new_utsname) int TEXT ·uname(SB),NOSPLIT,$0-16 MOVQ utsname+0(FP), DI MOVL $SYS_uname, AX SYSCALL MOVQ AX, ret+8(FP) RET // func mlock(addr, len uintptr) int TEXT ·mlock(SB),NOSPLIT,$0-24 MOVQ addr+0(FP), DI MOVQ len+8(FP), SI MOVL $SYS_mlock, AX SYSCALL MOVQ AX, ret+16(FP) RET
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