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57 lines
1.2 KiB
Go
57 lines
1.2 KiB
Go
package regnum
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import (
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"fmt"
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)
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// The mapping between hardware registers and DWARF registers is specified
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// in the DWARF for the DWARF for the Arm® 64-bit Architecture (AArch64),
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// Section 4, Table 1
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// https://github.com/ARM-software/abi-aa/blob/main/aadwarf64/aadwarf64.rst#4arm-specific-dwarf-definitions
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const (
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ARM64_X0 = 0 // X1 through X30 follow
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ARM64_BP = 29 // also X29
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ARM64_LR = 30 // also X30
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ARM64_SP = 31
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ARM64_PC = 32
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ARM64_V0 = 64 // V1 through V31 follow
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_ARM64_MaxRegNum = ARM64_V0 + 31
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)
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func ARM64ToName(num uint64) string {
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switch {
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case num <= 30:
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return fmt.Sprintf("X%d", num)
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case num == ARM64_SP:
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return "SP"
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case num == ARM64_PC:
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return "PC"
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case num >= ARM64_V0 && num <= 95:
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return fmt.Sprintf("V%d", num-64)
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default:
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return fmt.Sprintf("unknown%d", num)
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}
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}
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func ARM64MaxRegNum() uint64 {
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return _ARM64_MaxRegNum
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}
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var ARM64NameToDwarf = func() map[string]int {
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r := make(map[string]int)
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for i := 0; i <= 32; i++ {
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r[fmt.Sprintf("x%d", i)] = ARM64_X0 + i
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}
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r["fp"] = 29
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r["lr"] = 30
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r["sp"] = 31
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r["pc"] = 32
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for i := 0; i <= 31; i++ {
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r[fmt.Sprintf("v%d", i)] = ARM64_V0 + i
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}
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return r
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}()
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