35d4f05c4e
Moves the implementation of Registers.Get out of the backends and into proc where it can be implemented only once per architecture.
57 lines
1.1 KiB
Go
57 lines
1.1 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 ARM® Architecture page 7,
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// Table 1
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// http://infocenter.arm.com/help/topic/com.arm.doc.ihi0040b/IHI0040B_aadwarf.pdf
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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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