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package regnum
import (
"fmt"
"strings"
)
// The mapping between hardware registers and DWARF registers is specified
// in the System V ABI AMD64 Architecture Processor Supplement v. 1.0 page 61,
// figure 3.36
// https://gitlab.com/x86-psABIs/x86-64-ABI/-/tree/master
const (
AMD64_Rax = 0
AMD64_Rdx = 1
AMD64_Rcx = 2
AMD64_Rbx = 3
AMD64_Rsi = 4
AMD64_Rdi = 5
AMD64_Rbp = 6
AMD64_Rsp = 7
AMD64_R8 = 8
AMD64_R9 = 9
AMD64_R10 = 10
AMD64_R11 = 11
AMD64_R12 = 12
AMD64_R13 = 13
AMD64_R14 = 14
AMD64_R15 = 15
AMD64_Rip = 16
AMD64_XMM0 = 17 // XMM1 through XMM15 follow
AMD64_ST0 = 33 // ST(1) through ST(7) follow
AMD64_Rflags = 49
AMD64_Es = 50
AMD64_Cs = 51
AMD64_Ss = 52
AMD64_Ds = 53
AMD64_Fs = 54
AMD64_Gs = 55
AMD64_Fs_base = 58
AMD64_Gs_base = 59
AMD64_MXCSR = 64
AMD64_CW = 65
AMD64_SW = 66
AMD64_XMM16 = 67 // XMM17 through XMM31 follow
AMD64_K0 = 118 // k1 through k7 follow
)
var amd64DwarfToName = map[uint64]string{
AMD64_Rax: "Rax",
AMD64_Rdx: "Rdx",
AMD64_Rcx: "Rcx",
AMD64_Rbx: "Rbx",
AMD64_Rsi: "Rsi",
AMD64_Rdi: "Rdi",
AMD64_Rbp: "Rbp",
AMD64_Rsp: "Rsp",
AMD64_R8: "R8",
AMD64_R9: "R9",
AMD64_R10: "R10",
AMD64_R11: "R11",
AMD64_R12: "R12",
AMD64_R13: "R13",
AMD64_R14: "R14",
AMD64_R15: "R15",
AMD64_Rip: "Rip",
AMD64_XMM0: "XMM0",
AMD64_XMM0 + 1: "XMM1",
AMD64_XMM0 + 2: "XMM2",
AMD64_XMM0 + 3: "XMM3",
AMD64_XMM0 + 4: "XMM4",
AMD64_XMM0 + 5: "XMM5",
AMD64_XMM0 + 6: "XMM6",
AMD64_XMM0 + 7: "XMM7",
AMD64_XMM0 + 8: "XMM8",
AMD64_XMM0 + 9: "XMM9",
AMD64_XMM0 + 10: "XMM10",
AMD64_XMM0 + 11: "XMM11",
AMD64_XMM0 + 12: "XMM12",
AMD64_XMM0 + 13: "XMM13",
AMD64_XMM0 + 14: "XMM14",
AMD64_XMM0 + 15: "XMM15",
AMD64_ST0: "ST(0)",
AMD64_ST0 + 1: "ST(1)",
AMD64_ST0 + 2: "ST(2)",
AMD64_ST0 + 3: "ST(3)",
AMD64_ST0 + 4: "ST(4)",
AMD64_ST0 + 5: "ST(5)",
AMD64_ST0 + 6: "ST(6)",
AMD64_ST0 + 7: "ST(7)",
AMD64_Rflags: "Rflags",
AMD64_Es: "Es",
AMD64_Cs: "Cs",
AMD64_Ss: "Ss",
AMD64_Ds: "Ds",
AMD64_Fs: "Fs",
AMD64_Gs: "Gs",
AMD64_Fs_base: "Fs_base",
AMD64_Gs_base: "Gs_base",
AMD64_MXCSR: "MXCSR",
AMD64_CW: "CW",
AMD64_SW: "SW",
AMD64_XMM16: "XMM16",
AMD64_XMM16 + 1: "XMM17",
AMD64_XMM16 + 2: "XMM18",
AMD64_XMM16 + 3: "XMM19",
AMD64_XMM16 + 4: "XMM20",
AMD64_XMM16 + 5: "XMM21",
AMD64_XMM16 + 6: "XMM22",
AMD64_XMM16 + 7: "XMM23",
AMD64_XMM16 + 8: "XMM24",
AMD64_XMM16 + 9: "XMM25",
AMD64_XMM16 + 10: "XMM26",
AMD64_XMM16 + 11: "XMM27",
AMD64_XMM16 + 12: "XMM28",
AMD64_XMM16 + 13: "XMM29",
AMD64_XMM16 + 14: "XMM30",
AMD64_XMM16 + 15: "XMM31",
AMD64_K0: "K0",
AMD64_K0 + 1: "K1",
AMD64_K0 + 2: "K2",
AMD64_K0 + 3: "K3",
AMD64_K0 + 4: "K4",
AMD64_K0 + 5: "K5",
AMD64_K0 + 6: "K6",
AMD64_K0 + 7: "K7",
}
var AMD64NameToDwarf = func() map[string]int {
r := make(map[string]int)
for regNum, regName := range amd64DwarfToName {
r[strings.ToLower(regName)] = int(regNum)
}
r["eflags"] = 49
r["st0"] = 33
r["st1"] = 34
r["st2"] = 35
r["st3"] = 36
r["st4"] = 37
r["st5"] = 38
r["st6"] = 39
r["st7"] = 40
return r
}()
func AMD64MaxRegNum() uint64 {
max := uint64(AMD64_Rip)
for i := range amd64DwarfToName {
if i > max {
max = i
}
}
return max
}
func AMD64ToName(num uint64) string {
name, ok := amd64DwarfToName[num]
if ok {
return name
}
return fmt.Sprintf("unknown%d", num)
}
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