forked from go-delve/delve
/
registers_amd64.go
90 lines (85 loc) · 1.53 KB
/
registers_amd64.go
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package proc
import (
"bytes"
"encoding/binary"
"golang.org/x/arch/x86/x86asm"
)
var dwarfToAsm = map[int]x86asm.Reg{
0: x86asm.RAX,
1: x86asm.RDX,
2: x86asm.RCX,
3: x86asm.RBX,
4: x86asm.RSI,
5: x86asm.RDI,
6: x86asm.RBP,
7: x86asm.RSP,
8: x86asm.R8,
9: x86asm.R9,
10: x86asm.R10,
11: x86asm.R11,
12: x86asm.R12,
13: x86asm.R13,
14: x86asm.R14,
15: x86asm.R15,
16: x86asm.RIP,
}
var dwarfToName = map[int]string{
17: "XMM0",
18: "XMM1",
19: "XMM2",
20: "XMM3",
21: "XMM4",
22: "XMM5",
23: "XMM6",
24: "XMM7",
25: "XMM8",
26: "XMM9",
27: "XMM10",
28: "XMM11",
29: "XMM12",
30: "XMM13",
31: "XMM14",
32: "XMM15",
33: "ST(0)",
34: "ST(1)",
35: "ST(2)",
36: "ST(3)",
37: "ST(4)",
38: "ST(5)",
39: "ST(6)",
40: "ST(7)",
49: "Eflags",
50: "Es",
51: "Cs",
52: "Ss",
53: "Ds",
54: "Fs",
55: "Gs",
58: "Fs_base",
59: "Gs_base",
64: "MXCSR",
65: "CW",
66: "SW",
}
// getDwarfRegister maps between DWARF register numbers and architecture
// registers.
// The mapping is specified in the System V ABI AMD64 Architecture Processor
// Supplement page 57, figure 3.36
// https://www.uclibc.org/docs/psABI-x86_64.pdf
func GetDwarfRegister(regs Registers, i int) []byte {
if asmreg, ok := dwarfToAsm[i]; ok {
x, _ := regs.Get(int(asmreg))
var buf bytes.Buffer
binary.Write(&buf, binary.LittleEndian, x)
return buf.Bytes()
}
if regname, ok := dwarfToName[i]; ok {
regslice := regs.Slice()
for _, reg := range regslice {
if reg.Name == regname {
return reg.Bytes
}
}
}
return []byte{}
}