Author: jmallett
Date: Tue Mar 6 07:47:28 2012
New Revision: 232583
URL: http://svn.freebsd.org/changeset/base/232583
Log:
When emulating rdhwr for TLS, use the 32-bit offset under COMPAT_FREEBSD32.
Modified:
head/sys/mips/include/tls.h
head/sys/mips/mips/trap.c
Modified: head/sys/mips/include/tls.h
==============================================================================
--- head/sys/mips/include/tls.h Tue Mar 6 03:42:54 2012 (r232582)
+++ head/sys/mips/include/tls.h Tue Mar 6 07:47:28 2012 (r232583)
@@ -32,6 +32,10 @@
#ifndef __MIPS_TLS_H__
#define __MIPS_TLS_H__
+#if defined(_KERNEL) && !defined(KLD_MODULE) && !defined(_STANDALONE)
+#include "opt_compat.h"
+#endif
+
/*
* TLS parameters
*/
@@ -41,6 +45,9 @@
#ifdef __mips_n64
#define TLS_TCB_SIZE 16
+#ifdef COMPAT_FREEBSD32
+#define TLS_TCB_SIZE32 8
+#endif
#else
#define TLS_TCB_SIZE 8
#endif
Modified: head/sys/mips/mips/trap.c
==============================================================================
--- head/sys/mips/mips/trap.c Tue Mar 6 03:42:54 2012 (r232582)
+++ head/sys/mips/mips/trap.c Tue Mar 6 07:47:28 2012 (r232583)
@@ -814,6 +814,11 @@ dofault:
if (inst.RType.rd == 29) {
frame_regs = &(trapframe->zero);
frame_regs[inst.RType.rt] =
(register_t)(intptr_t)td->td_md.md_tls;
+#if defined(__mips_n64) && defined(COMPAT_FREEBSD32)
+ if (SV_PROC_FLAG(td->td_proc,
SV_ILP32))
+
frame_regs[inst.RType.rt] += TLS_TP_OFFSET + TLS_TCB_SIZE32;
+ else
+#endif
frame_regs[inst.RType.rt] +=
TLS_TP_OFFSET + TLS_TCB_SIZE;
trapframe->pc += sizeof(int);
goto out;
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