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| author |   Chris Zankel <chris@zankel.net> | 2013-02-23 19:35:57 -0800 |
|---|---|---|
| committer | Chris Zankel <chris@zankel.net> | 2013-02-23 19:35:57 -0800 |
| commit | c50842df47970eab459f13490c152aac85fc02f2 (patch) | |
| tree | d2933b4d9641067002ba6d662b0abf6ee3011375 /arch/xtensa/kernel/asm-offsets.c | |
| parent | xtensa: add missing include asm/uaccess.h to checksum.h (diff) | |
| download | linux-dev-c50842df47970eab459f13490c152aac85fc02f2.tar.xz linux-dev-c50842df47970eab459f13490c152aac85fc02f2.zip | |
xtensa: add support for TLS
The Xtensa architecture provides a global register called THREADPTR
for the purpose of Thread Local Storage (TLS) support. This allows us
to use a fairly simple implementation, keeping the thread pointer in
the regset and simply saving and restoring it upon entering/exiting
the from user space.
Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa/kernel/asm-offsets.c')
| -rw-r--r-- | arch/xtensa/kernel/asm-offsets.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/xtensa/kernel/asm-offsets.c b/arch/xtensa/kernel/asm-offsets.c index 0701fad170db..1915c7c889ba 100644 --- a/arch/xtensa/kernel/asm-offsets.c +++ b/arch/xtensa/kernel/asm-offsets.c @@ -42,6 +42,7 @@ int main(void) DEFINE(PT_ICOUNTLEVEL, offsetof (struct pt_regs, icountlevel)); DEFINE(PT_SYSCALL, offsetof (struct pt_regs, syscall)); DEFINE(PT_SCOMPARE1, offsetof(struct pt_regs, scompare1)); + DEFINE(PT_THREADPTR, offsetof(struct pt_regs, threadptr)); DEFINE(PT_AREG, offsetof (struct pt_regs, areg[0])); DEFINE(PT_AREG0, offsetof (struct pt_regs, areg[0])); DEFINE(PT_AREG1, offsetof (struct pt_regs, areg[1])); |