[PATCH] x86/Intel: fix indirect far jmp/call with operand size specified

Jan Beulich jbeulich@novell.com
Thu Feb 21 16:20:00 GMT 2008


Far jumps and calls were broken due to missing permissions to use
certain operand size operators on their operands.
Additionally, jmp and call, which really behave identically as far as
operands are concerned, were out of sync in a few more respects.

opcodes/
2008-02-21  Jan Beulich  <jbeulich@novell.com>

	* i386-opc.tbl: Allow Dword for far indirect call. Allow Dword
	and Fword for far indirect jmp. Allow Reg16 and Word for near
	indirect jmp on x86-64. Disallow Fword for lcall.
	* i386-tbl.h: Re-generate.

--- 2008-02-13/opcodes/i386-opc.tbl	2008-02-13 11:13:38.000000000 +0100
+++ 2008-02-13/opcodes/i386-opc.tbl	2008-02-21 16:56:08.000000000 +0100
@@ -322,17 +322,17 @@ call, 1, 0xff, 0x2, 1, Cpu64, Modrm|Defa
 // Intel Syntax
 call, 2, 0x9a, None, 1, CpuNo64, JumpInterSegment|DefaultSize|No_bSuf|No_sSuf|No_qSuf|No_ldSuf, { Imm16, Imm16|Imm32 }
 // Intel Syntax
-call, 1, 0xff, 0x3, 1, 0, Modrm|DefaultSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf, { Fword|Unspecified|BaseIndex|Disp8|Disp16|Disp32|Disp32S|JumpAbsolute }
+call, 1, 0xff, 0x3, 1, 0, Modrm|DefaultSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf, { Dword|Fword|Unspecified|BaseIndex|Disp8|Disp16|Disp32|Disp32S|JumpAbsolute }
 lcall, 2, 0x9a, None, 1, CpuNo64, JumpInterSegment|DefaultSize|No_bSuf|No_sSuf|No_qSuf|No_ldSuf, { Imm16, Imm16|Imm32 }
-lcall, 1, 0xff, 0x3, 1, 0, Modrm|DefaultSize|No_bSuf|No_sSuf|No_qSuf|No_ldSuf, { Fword|Unspecified|BaseIndex|Disp8|Disp16|Disp32|Disp32S|JumpAbsolute }
+lcall, 1, 0xff, 0x3, 1, 0, Modrm|DefaultSize|No_bSuf|No_sSuf|No_qSuf|No_ldSuf, { Unspecified|BaseIndex|Disp8|Disp16|Disp32|Disp32S|JumpAbsolute }
 
 jmp, 1, 0xeb, None, 1, 0, Jump|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Disp8|Disp16|Disp32|Disp32S|Disp64 }
 jmp, 1, 0xff, 0x4, 1, CpuNo64, Modrm|No_bSuf|No_sSuf|No_qSuf|No_ldSuf, { Reg16|Reg32|Word|Dword|Unspecified|BaseIndex|Disp8|Disp16|Disp32|JumpAbsolute }
-jmp, 1, 0xff, 0x4, 1, Cpu64, Modrm|No_bSuf|No_lSuf|No_sSuf|No_ldSuf|NoRex64, { Reg64|Qword|Unspecified|BaseIndex|Disp8|Disp32|Disp32S|JumpAbsolute }
+jmp, 1, 0xff, 0x4, 1, Cpu64, Modrm|No_bSuf|No_lSuf|No_sSuf|No_ldSuf|NoRex64, { Reg16|Reg64|Word|Qword|Unspecified|BaseIndex|Disp8|Disp32|Disp32S|JumpAbsolute }
 // Intel Syntax.
 jmp, 2, 0xea, None, 1, CpuNo64, JumpInterSegment|No_bSuf|No_sSuf|No_qSuf|No_ldSuf, { Imm16, Imm16|Imm32 }
 // Intel Syntax.
-jmp, 1, 0xff, 0x5, 1, 0, Modrm|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf, { Unspecified|BaseIndex|Disp8|Disp16|Disp32|Disp32S|JumpAbsolute }
+jmp, 1, 0xff, 0x5, 1, 0, Modrm|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf, { Dword|Fword|Unspecified|BaseIndex|Disp8|Disp16|Disp32|Disp32S|JumpAbsolute }
 ljmp, 2, 0xea, None, 1, CpuNo64, JumpInterSegment|No_bSuf|No_sSuf|No_qSuf|No_ldSuf, { Imm16, Imm16|Imm32 }
 ljmp, 1, 0xff, 0x5, 1, 0, Modrm|No_bSuf|No_sSuf|No_qSuf|No_ldSuf, { Unspecified|BaseIndex|Disp8|Disp16|Disp32|Disp32S|JumpAbsolute }
 





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