Author: avg Date: Fri Jul 6 14:41:02 2012 New Revision: 238168 URL: http://svn.freebsd.org/changeset/base/238168
Log: r237748 continuation: segment-override prefixes are not invalid in long mode Update DTrace disassembler accordingly. The code to treat the prefixes as null prefixes was already in place. Although in practice compilers seem to generate only cs-prefix for use in long NOPs, the same treatment is applied to all of cs, ds, es, ss for consistency. Reported by: emaste Tested by: emaste Obtained from: Illumos commit 13442:4adbe6de60c8 (+ local changes) MFC after: 5 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 Jul 6 14:28:18 2012 (r238167) +++ head/sys/cddl/dev/dtrace/amd64/dis_tables.c Fri Jul 6 14:41:02 2012 (r238168) @@ -1146,14 +1146,14 @@ const instable_t dis_distable[16][16] = /* [1,C] */ TNS("sbbb",IA), TS("sbb",IA), TSx("push",SEG), TSx("pop",SEG), }, { /* [2,0] */ TNS("andb",RMw), TS("and",RMw), TNS("andb",MRw), TS("and",MRw), -/* [2,4] */ TNS("andb",IA), TS("and",IA), TNSx("%es:",OVERRIDE), TNSx("daa",NORM), +/* [2,4] */ TNS("andb",IA), TS("and",IA), TNS("%es:",OVERRIDE), TNSx("daa",NORM), /* [2,8] */ TNS("subb",RMw), TS("sub",RMw), TNS("subb",MRw), TS("sub",MRw), -/* [2,C] */ TNS("subb",IA), TS("sub",IA), TNSx("%cs:",OVERRIDE), TNSx("das",NORM), +/* [2,C] */ TNS("subb",IA), TS("sub",IA), TNS("%cs:",OVERRIDE), TNSx("das",NORM), }, { /* [3,0] */ TNS("xorb",RMw), TS("xor",RMw), TNS("xorb",MRw), TS("xor",MRw), -/* [3,4] */ TNS("xorb",IA), TS("xor",IA), TNSx("%ss:",OVERRIDE), TNSx("aaa",NORM), +/* [3,4] */ TNS("xorb",IA), TS("xor",IA), TNS("%ss:",OVERRIDE), TNSx("aaa",NORM), /* [3,8] */ TNS("cmpb",RMw), TS("cmp",RMw), TNS("cmpb",MRw), TS("cmp",MRw), -/* [3,C] */ TNS("cmpb",IA), TS("cmp",IA), TNSx("%ds:",OVERRIDE), TNSx("aas",NORM), +/* [3,C] */ TNS("cmpb",IA), TS("cmp",IA), TNS("%ds:",OVERRIDE), TNSx("aas",NORM), }, { /* [4,0] */ TSx("inc",R), TSx("inc",R), TSx("inc",R), TSx("inc",R), /* [4,4] */ TSx("inc",R), TSx("inc",R), TSx("inc",R), TSx("inc",R), Modified: head/sys/cddl/dev/dtrace/i386/dis_tables.c ============================================================================== --- head/sys/cddl/dev/dtrace/i386/dis_tables.c Fri Jul 6 14:28:18 2012 (r238167) +++ head/sys/cddl/dev/dtrace/i386/dis_tables.c Fri Jul 6 14:41:02 2012 (r238168) @@ -1146,14 +1146,14 @@ const instable_t dis_distable[16][16] = /* [1,C] */ TNS("sbbb",IA), TS("sbb",IA), TSx("push",SEG), TSx("pop",SEG), }, { /* [2,0] */ TNS("andb",RMw), TS("and",RMw), TNS("andb",MRw), TS("and",MRw), -/* [2,4] */ TNS("andb",IA), TS("and",IA), TNSx("%es:",OVERRIDE), TNSx("daa",NORM), +/* [2,4] */ TNS("andb",IA), TS("and",IA), TNS("%es:",OVERRIDE), TNSx("daa",NORM), /* [2,8] */ TNS("subb",RMw), TS("sub",RMw), TNS("subb",MRw), TS("sub",MRw), -/* [2,C] */ TNS("subb",IA), TS("sub",IA), TNSx("%cs:",OVERRIDE), TNSx("das",NORM), +/* [2,C] */ TNS("subb",IA), TS("sub",IA), TNS("%cs:",OVERRIDE), TNSx("das",NORM), }, { /* [3,0] */ TNS("xorb",RMw), TS("xor",RMw), TNS("xorb",MRw), TS("xor",MRw), -/* [3,4] */ TNS("xorb",IA), TS("xor",IA), TNSx("%ss:",OVERRIDE), TNSx("aaa",NORM), +/* [3,4] */ TNS("xorb",IA), TS("xor",IA), TNS("%ss:",OVERRIDE), TNSx("aaa",NORM), /* [3,8] */ TNS("cmpb",RMw), TS("cmp",RMw), TNS("cmpb",MRw), TS("cmp",MRw), -/* [3,C] */ TNS("cmpb",IA), TS("cmp",IA), TNSx("%ds:",OVERRIDE), TNSx("aas",NORM), +/* [3,C] */ TNS("cmpb",IA), TS("cmp",IA), TNS("%ds:",OVERRIDE), TNSx("aas",NORM), }, { /* [4,0] */ TSx("inc",R), TSx("inc",R), TSx("inc",R), TSx("inc",R), /* [4,4] */ TSx("inc",R), TSx("inc",R), TSx("inc",R), TSx("inc",R), _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"