Author: avg
Date: Fri Jun 29 07:35:37 2012
New Revision: 237748
URL: http://svn.freebsd.org/changeset/base/237748
Log:
dtrace instruction decoder: add 0x0f 0x1f NOP opcode support
According to the AMD manual the whole range from 0x09 to 0x1f are NOPs.
Intel manual mentions only 0x1f. Use only Intel one for now, it seems
to be the one actually generated by compilers.
Use gdb mnemonic for the operation: "nopw".
[1] AMD64 Architecture Programmer's Manual
Volume 3: General-Purpose and System Instructions
[2] Software Optimization Guide for AMD Family 10h Processors
[3] Intel(R) 64 and IA-32 Architectures Software Developer’s Manual
Volume 2 (2A, 2B & 2C): Instruction Set Reference, A-Z
Tested by: Fabian Keil <freebsd-lis...@fabiankeil.de> (earlier version)
MFC after: 3 days
Modified:
head/sys/cddl/dev/dtrace/amd64/dis_tables.c
head/sys/cddl/dev/dtrace/i386/dis_tables.c
Modified: head/sys/cddl/dev/dtrace/amd64/dis_tables.c
==============================================================================
--- head/sys/cddl/dev/dtrace/amd64/dis_tables.c Fri Jun 29 06:41:19 2012
(r237747)
+++ head/sys/cddl/dev/dtrace/amd64/dis_tables.c Fri Jun 29 07:35:37 2012
(r237748)
@@ -815,7 +815,7 @@ const instable_t dis_op0F[16][16] = {
/* [10] */ TNSZ("movups",XMMO,16),
TNSZ("movups",XMMOS,16),TNSZ("movlps",XMMO,8), TNSZ("movlps",XMMOS,8),
/* [14] */
TNSZ("unpcklps",XMMO,16),TNSZ("unpckhps",XMMO,16),TNSZ("movhps",XMMOM,8),TNSZ("movhps",XMMOMS,8),
/* [18] */ IND(dis_op0F18), INVALID, INVALID,
INVALID,
-/* [1C] */ INVALID, INVALID, INVALID,
INVALID,
+/* [1C] */ INVALID, INVALID, INVALID,
TNS("nopw", M),
}, {
/* [20] */ TSy("mov",SREG), TSy("mov",SREG),
TSy("mov",SREG), TSy("mov",SREG),
/* [24] */ TSx("mov",SREG), INVALID,
TSx("mov",SREG), INVALID,
Modified: head/sys/cddl/dev/dtrace/i386/dis_tables.c
==============================================================================
--- head/sys/cddl/dev/dtrace/i386/dis_tables.c Fri Jun 29 06:41:19 2012
(r237747)
+++ head/sys/cddl/dev/dtrace/i386/dis_tables.c Fri Jun 29 07:35:37 2012
(r237748)
@@ -815,7 +815,7 @@ const instable_t dis_op0F[16][16] = {
/* [10] */ TNSZ("movups",XMMO,16),
TNSZ("movups",XMMOS,16),TNSZ("movlps",XMMO,8), TNSZ("movlps",XMMOS,8),
/* [14] */
TNSZ("unpcklps",XMMO,16),TNSZ("unpckhps",XMMO,16),TNSZ("movhps",XMMOM,8),TNSZ("movhps",XMMOMS,8),
/* [18] */ IND(dis_op0F18), INVALID, INVALID,
INVALID,
-/* [1C] */ INVALID, INVALID, INVALID,
INVALID,
+/* [1C] */ INVALID, INVALID, INVALID,
TNS("nopw", M),
}, {
/* [20] */ TSy("mov",SREG), TSy("mov",SREG),
TSy("mov",SREG), TSy("mov",SREG),
/* [24] */ TSx("mov",SREG), INVALID,
TSx("mov",SREG), INVALID,
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