diff options
Diffstat (limited to 'vendor/golang.org/x/arch/x86/x86asm/plan9x.go')
| -rw-r--r-- | vendor/golang.org/x/arch/x86/x86asm/plan9x.go | 362 |
1 files changed, 0 insertions, 362 deletions
diff --git a/vendor/golang.org/x/arch/x86/x86asm/plan9x.go b/vendor/golang.org/x/arch/x86/x86asm/plan9x.go deleted file mode 100644 index 41cfc08f..00000000 --- a/vendor/golang.org/x/arch/x86/x86asm/plan9x.go +++ /dev/null @@ -1,362 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package x86asm - -import ( - "fmt" - "strings" -) - -// GoSyntax returns the Go assembler syntax for the instruction. -// The syntax was originally defined by Plan 9. -// The pc is the program counter of the instruction, used for expanding -// PC-relative addresses into absolute ones. -// The symname function queries the symbol table for the program -// being disassembled. Given a target address it returns the name and base -// address of the symbol containing the target, if any; otherwise it returns "", 0. -func GoSyntax(inst Inst, pc uint64, symname func(uint64) (string, uint64)) string { - if symname == nil { - symname = func(uint64) (string, uint64) { return "", 0 } - } - var args []string - for i := len(inst.Args) - 1; i >= 0; i-- { - a := inst.Args[i] - if a == nil { - continue - } - args = append(args, plan9Arg(&inst, pc, symname, a)) - } - - var rep string - var last Prefix - for _, p := range inst.Prefix { - if p == 0 || p.IsREX() || p.IsVEX() { - break - } - - switch { - // Don't show prefixes implied by the instruction text. - case p&0xFF00 == PrefixImplicit: - continue - // Only REP and REPN are recognized repeaters. Plan 9 syntax - // treats them as separate opcodes. - case p&0xFF == PrefixREP: - rep = "REP; " - case p&0xFF == PrefixREPN: - rep = "REPNE; " - default: - last = p - } - } - - prefix := "" - switch last & 0xFF { - case 0, 0x66, 0x67: - // ignore - default: - prefix += last.String() + " " - } - - op := inst.Op.String() - if plan9Suffix[inst.Op] { - s := inst.DataSize - if inst.MemBytes != 0 { - s = inst.MemBytes * 8 - } - switch s { - case 8: - op += "B" - case 16: - op += "W" - case 32: - op += "L" - case 64: - op += "Q" - } - } - - if args != nil { - op += " " + strings.Join(args, ", ") - } - - return rep + prefix + op -} - -func plan9Arg(inst *Inst, pc uint64, symname func(uint64) (string, uint64), arg Arg) string { - switch a := arg.(type) { - case Reg: - return plan9Reg[a] - case Rel: - if pc == 0 { - break - } - // If the absolute address is the start of a symbol, use the name. - // Otherwise use the raw address, so that things like relative - // jumps show up as JMP 0x123 instead of JMP f+10(SB). - // It is usually easier to search for 0x123 than to do the mental - // arithmetic to find f+10. - addr := pc + uint64(inst.Len) + uint64(a) - if s, base := symname(addr); s != "" && addr == base { - return fmt.Sprintf("%s(SB)", s) - } - return fmt.Sprintf("%#x", addr) - - case Imm: - if s, base := symname(uint64(a)); s != "" { - suffix := "" - if uint64(a) != base { - suffix = fmt.Sprintf("%+d", uint64(a)-base) - } - return fmt.Sprintf("$%s%s(SB)", s, suffix) - } - if inst.Mode == 32 { - return fmt.Sprintf("$%#x", uint32(a)) - } - if Imm(int32(a)) == a { - return fmt.Sprintf("$%#x", int64(a)) - } - return fmt.Sprintf("$%#x", uint64(a)) - case Mem: - if a.Segment == 0 && a.Disp != 0 && a.Base == 0 && (a.Index == 0 || a.Scale == 0) { - if s, base := symname(uint64(a.Disp)); s != "" { - suffix := "" - if uint64(a.Disp) != base { - suffix = fmt.Sprintf("%+d", uint64(a.Disp)-base) - } - return fmt.Sprintf("%s%s(SB)", s, suffix) - } - } - s := "" - if a.Segment != 0 { - s += fmt.Sprintf("%s:", plan9Reg[a.Segment]) - } - if a.Disp != 0 { - s += fmt.Sprintf("%#x", a.Disp) - } else { - s += "0" - } - if a.Base != 0 { - s += fmt.Sprintf("(%s)", plan9Reg[a.Base]) - } - if a.Index != 0 && a.Scale != 0 { - s += fmt.Sprintf("(%s*%d)", plan9Reg[a.Index], a.Scale) - } - return s - } - return arg.String() -} - -var plan9Suffix = [maxOp + 1]bool{ - ADC: true, - ADD: true, - AND: true, - BSF: true, - BSR: true, - BT: true, - BTC: true, - BTR: true, - BTS: true, - CMP: true, - CMPXCHG: true, - CVTSI2SD: true, - CVTSI2SS: true, - CVTSD2SI: true, - CVTSS2SI: true, - CVTTSD2SI: true, - CVTTSS2SI: true, - DEC: true, - DIV: true, - FLDENV: true, - FRSTOR: true, - IDIV: true, - IMUL: true, - IN: true, - INC: true, - LEA: true, - MOV: true, - MOVNTI: true, - MUL: true, - NEG: true, - NOP: true, - NOT: true, - OR: true, - OUT: true, - POP: true, - POPA: true, - PUSH: true, - PUSHA: true, - RCL: true, - RCR: true, - ROL: true, - ROR: true, - SAR: true, - SBB: true, - SHL: true, - SHLD: true, - SHR: true, - SHRD: true, - SUB: true, - TEST: true, - XADD: true, - XCHG: true, - XOR: true, -} - -var plan9Reg = [...]string{ - AL: "AL", - CL: "CL", - BL: "BL", - DL: "DL", - AH: "AH", - CH: "CH", - BH: "BH", - DH: "DH", - SPB: "SP", - BPB: "BP", - SIB: "SI", - DIB: "DI", - R8B: "R8", - R9B: "R9", - R10B: "R10", - R11B: "R11", - R12B: "R12", - R13B: "R13", - R14B: "R14", - R15B: "R15", - AX: "AX", - CX: "CX", - BX: "BX", - DX: "DX", - SP: "SP", - BP: "BP", - SI: "SI", - DI: "DI", - R8W: "R8", - R9W: "R9", - R10W: "R10", - R11W: "R11", - R12W: "R12", - R13W: "R13", - R14W: "R14", - R15W: "R15", - EAX: "AX", - ECX: "CX", - EDX: "DX", - EBX: "BX", - ESP: "SP", - EBP: "BP", - ESI: "SI", - EDI: "DI", - R8L: "R8", - R9L: "R9", - R10L: "R10", - R11L: "R11", - R12L: "R12", - R13L: "R13", - R14L: "R14", - R15L: "R15", - RAX: "AX", - RCX: "CX", - RDX: "DX", - RBX: "BX", - RSP: "SP", - RBP: "BP", - RSI: "SI", - RDI: "DI", - R8: "R8", - R9: "R9", - R10: "R10", - R11: "R11", - R12: "R12", - R13: "R13", - R14: "R14", - R15: "R15", - IP: "IP", - EIP: "IP", - RIP: "IP", - F0: "F0", - F1: "F1", - F2: "F2", - F3: "F3", - F4: "F4", - F5: "F5", - F6: "F6", - F7: "F7", - M0: "M0", - M1: "M1", - M2: "M2", - M3: "M3", - M4: "M4", - M5: "M5", - M6: "M6", - M7: "M7", - X0: "X0", - X1: "X1", - X2: "X2", - X3: "X3", - X4: "X4", - X5: "X5", - X6: "X6", - X7: "X7", - X8: "X8", - X9: "X9", - X10: "X10", - X11: "X11", - X12: "X12", - X13: "X13", - X14: "X14", - X15: "X15", - CS: "CS", - SS: "SS", - DS: "DS", - ES: "ES", - FS: "FS", - GS: "GS", - GDTR: "GDTR", - IDTR: "IDTR", - LDTR: "LDTR", - MSW: "MSW", - TASK: "TASK", - CR0: "CR0", - CR1: "CR1", - CR2: "CR2", - CR3: "CR3", - CR4: "CR4", - CR5: "CR5", - CR6: "CR6", - CR7: "CR7", - CR8: "CR8", - CR9: "CR9", - CR10: "CR10", - CR11: "CR11", - CR12: "CR12", - CR13: "CR13", - CR14: "CR14", - CR15: "CR15", - DR0: "DR0", - DR1: "DR1", - DR2: "DR2", - DR3: "DR3", - DR4: "DR4", - DR5: "DR5", - DR6: "DR6", - DR7: "DR7", - DR8: "DR8", - DR9: "DR9", - DR10: "DR10", - DR11: "DR11", - DR12: "DR12", - DR13: "DR13", - DR14: "DR14", - DR15: "DR15", - TR0: "TR0", - TR1: "TR1", - TR2: "TR2", - TR3: "TR3", - TR4: "TR4", - TR5: "TR5", - TR6: "TR6", - TR7: "TR7", -} |