57 lines
2.2 KiB
Diff
57 lines
2.2 KiB
Diff
From 574ee1ee5025d9941e44238e846f6074fbdf2e87 Mon Sep 17 00:00:00 2001
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From: David Schleef <ds@schleef.org>
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Date: Sat, 15 Oct 2011 11:51:17 -0700
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Subject: [PATCH] x86insn: switch to ultra-conservative nops
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---
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orc/orcx86insn.c | 26 ++++++++++++++++++--------
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1 files changed, 18 insertions(+), 8 deletions(-)
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diff --git a/orc/orcx86insn.c b/orc/orcx86insn.c
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index 78ca30d..33982e2 100644
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--- a/orc/orcx86insn.c
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+++ b/orc/orcx86insn.c
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@@ -527,14 +527,6 @@ orc_uint8 nop_codes[][16] = {
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{ 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 }, /* nopw 0x0(%rax,%rax,1) */
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{ 0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00 }, /* nopl 0x0(%rax) */
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{ 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00 }, /* nopl 0x0(%rax,%rax,1) */
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-#else
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- { 0x90, 0x90, 0x90 },
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- { 0x90, 0x90, 0x90, 0x90 },
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- { 0x90, 0x90, 0x90, 0x90, 0x90 },
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- { 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 }, /* nopw 0x0(%rax,%rax,1) */
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- { 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90 },
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- { 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90 },
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-#endif
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{ 0x66, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00 }, /* nopw 0x0(%rax,%rax,1) */
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/* Forms of nopw %cs:0x0(%rax,%rax,1) */
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{ 0x66, 0x2e, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00 },
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@@ -546,6 +538,24 @@ orc_uint8 nop_codes[][16] = {
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0x00, 0x00 },
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{ 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x2e, 0x0f, 0x1f, 0x84, 0x00, 0x00,
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0x00, 0x00, 0x00 },
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+#else
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+ { 0x90, 0x90, 0x90 },
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+ { 0x90, 0x90, 0x90, 0x90 },
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+ { 0x90, 0x90, 0x90, 0x90, 0x90 },
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+ { 0x90, 0x90, 0x90, 0x90, 0x90, 0x90 },
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+ { 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90 },
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+ { 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90 },
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+ { 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90 },
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+ { 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90 },
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+ { 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90 },
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+ { 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90 },
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+ { 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
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+ 0x90, },
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+ { 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
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+ 0x90, 0x90, },
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+ { 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
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+ 0x90, 0x90, 0x90, },
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+#endif
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};
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void
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--
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1.7.0.4
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