28 lines
844 B
Diff
28 lines
844 B
Diff
# HG changeset patch
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# User David Vrabel <david.vrabel@citrix.com>
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# Date 1325778436 0
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# Node ID 03781de56c31072266fb464e7dfeec133bcf0fb4
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# Parent 94180a5a0c7c7d680ede2e54bd13f56ed43f452d
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x86: emulate lea with two register operands correctly
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An lea instruction with two register operands should raise an
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undefined instruction exception.
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Skype does such a instruction and will crash when starting if it does
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not get the exception.
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Signed-off-by: David Vrabel <david.vrabel@citrix.com>
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Signed-off-by: Keir Fraser <keir@xen.org>
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Committed-by: Keir Fraser <keir@xen.org>
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--- a/xen/arch/x86/x86_emulate/x86_emulate.c
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+++ b/xen/arch/x86/x86_emulate/x86_emulate.c
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@@ -2100,6 +2100,7 @@ x86_emulate(
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}
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case 0x8d: /* lea */
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+ generate_exception_if(ea.type != OP_MEM, EXC_UD, -1);
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dst.val = ea.mem.off;
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break;
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