Author: markj
Date: Sat Mar 1 17:55:20 2014
New Revision: 262661
URL: http://svnweb.freebsd.org/changeset/base/262661
Log:
Fix emulation of call and jmp instructions on i386 and for 32-bit processes
on amd64.
Submitted by: Prashanth Kumar <pra_ud...@yahoo.co.in>
MFC after: 2 weeks
Modified:
head/sys/cddl/contrib/opensolaris/uts/intel/dtrace/fasttrap_isa.c
Modified: head/sys/cddl/contrib/opensolaris/uts/intel/dtrace/fasttrap_isa.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/intel/dtrace/fasttrap_isa.c Sat Mar
1 17:44:40 2014 (r262660)
+++ head/sys/cddl/contrib/opensolaris/uts/intel/dtrace/fasttrap_isa.c Sat Mar
1 17:55:20 2014 (r262661)
@@ -1442,10 +1442,7 @@ fasttrap_pid_probe(struct reg *rp)
if (tp->ftt_code == 0) {
new_pc = tp->ftt_dest;
} else {
-#ifdef __amd64
- uintptr_t value;
-#endif
- uintptr_t addr = tp->ftt_dest;
+ uintptr_t value, addr = tp->ftt_dest;
if (tp->ftt_base != FASTTRAP_NOREG)
addr += fasttrap_getreg(rp, tp->ftt_base);
@@ -1469,6 +1466,7 @@ fasttrap_pid_probe(struct reg *rp)
#ifdef __amd64
if (p->p_model == DATAMODEL_NATIVE) {
+#endif
if ((value = fasttrap_fulword((void
*)addr))
== -1) {
fasttrap_sigsegv(p, curthread,
@@ -1477,9 +1475,8 @@ fasttrap_pid_probe(struct reg *rp)
break;
}
new_pc = value;
+#ifdef __amd64
} else {
-#endif
-#ifdef __i386__
uint32_t value32;
addr = (uintptr_t)(uint32_t)addr;
if ((value32 = fasttrap_fuword32((void
*)addr))
@@ -1490,13 +1487,11 @@ fasttrap_pid_probe(struct reg *rp)
break;
}
new_pc = value32;
-#endif
}
-#ifdef __amd64
+#endif
} else {
new_pc = addr;
}
-#endif
}
/*
@@ -1515,11 +1510,9 @@ fasttrap_pid_probe(struct reg *rp)
ret = fasttrap_sulword((void *)addr, pcps);
} else {
#endif
-#ifdef __i386__
addr = rp->r_rsp - sizeof (uint32_t);
pcps = (uint32_t)(pc + tp->ftt_size);
ret = fasttrap_suword32((void *)addr, pcps);
-#endif
#ifdef __amd64
}
#endif
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