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dtrace: 64-bits registers support

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The registers in ilumos and FreeBSD have a different number.
In the illumos, last 32-bits register defined is SS an in FreeBSD is GS.
While translating register we should comper it to the highest one.

PR:             240358
Reported by:    lwhsu@
MFC after:      2 weeks
This commit is contained in:
Mariusz Zaborski 2019-10-04 16:17:00 +00:00
parent 291287667c
commit 5eb65c4ce5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=353107
1 changed files with 4 additions and 0 deletions
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4
sys/cddl/dev/dtrace/amd64/dtrace_isa.c
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@ -505,7 +505,11 @@ dtrace_getreg(struct trapframe *rp, uint_t reg)
REG_SS /* 18 SS */
};
#ifdef illumos
if (reg <= SS) {
#else /* !illumos */
if (reg <= GS) {
#endif
if (reg >= sizeof (regmap) / sizeof (int)) {
DTRACE_CPUFLAG_SET(CPU_DTRACE_ILLOP);
return (0);