containerd/vendor/github.com/cilium/ebpf/asm/register.go
Akihiro Suda 8f870c233f support cgroup2
* only shim v2 runc v2 ("io.containerd.runc.v2") is supported
* only PID metrics is implemented. Others should be implemented in separate PRs.
* lots of code duplication in v1 metrics and v2 metrics. Dedupe should be separate PR.

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
2019-12-12 02:56:51 +09:00

43 lines
580 B
Go

package asm
import (
"fmt"
)
// Register is the source or destination of most operations.
type Register uint8
// R0 contains return values.
const R0 Register = 0
// Registers for function arguments.
const (
R1 Register = R0 + 1 + iota
R2
R3
R4
R5
)
// Callee saved registers preserved by function calls.
const (
R6 Register = R5 + 1 + iota
R7
R8
R9
)
// Read-only frame pointer to access stack.
const (
R10 Register = R9 + 1
RFP = R10
)
func (r Register) String() string {
v := uint8(r)
if v == 10 {
return "rfp"
}
return fmt.Sprintf("r%d", v)
}