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Added support for arm64 syscall prefixes #321

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Added support for arm64 syscall prefixes #321

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19 changes: 15 additions & 4 deletions bcc/module.go
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Original file line number Diff line number Diff line change
Expand Up @@ -548,12 +548,23 @@ func GetSyscallFnName(name string) string {

var syscallPrefix string

func canFindName(symbol string) bool {
_, err := bccResolveName("", symbol, -1)
return err == nil
}
func GetSyscallPrefix() string {
if syscallPrefix == "" {
_, err := bccResolveName("", "__x64_sys_bpf", -1)
if err == nil {
syscallPrefix = "__x64_sys_"
} else {
symbolToPrefix := map[string]string{
"__x64_sys_bpf": "__x64_sys_",
"__arm64_sys_bpf": "__arm64_sys_",
}
for symbol, prefix := range symbolToPrefix {
if canFindName(symbol) {
syscallPrefix = prefix
break
}
}
if syscallPrefix == "" {
syscallPrefix = "sys_"
}
}
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