diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-30 08:46:16 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-30 08:46:16 -0700 |
| commit | 7cece14acd063dd1c4e8933461d44ec6a5a5517b (patch) | |
| tree | a7d2de4acaf64eed207ceab9eb6b2a386ebd7401 /arch/sparc64/kernel/utrap.S | |
| parent | 95dfec6ae1cb8c03406aac612a5642cbddb676b3 (diff) | |
| parent | 8cd0ae3acc0154f3f9dfa1b4a2b7c02c271533f6 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc64: remove duplicated include
sparc: Add kgdb support.
kgdbts: Sparc needs sstep emulation.
sparc32: Kill smp_message_pass() and related code.
sparc64: Kill PIL_RESERVED, unused.
sparc64: Split entry.S up into seperate files.
Diffstat (limited to 'arch/sparc64/kernel/utrap.S')
| -rw-r--r-- | arch/sparc64/kernel/utrap.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/utrap.S b/arch/sparc64/kernel/utrap.S new file mode 100644 index 00000000000..b7f0f3f3a90 --- /dev/null +++ b/arch/sparc64/kernel/utrap.S @@ -0,0 +1,29 @@ + .globl utrap_trap + .type utrap_trap,#function +utrap_trap: /* %g3=handler,%g4=level */ + TRAP_LOAD_THREAD_REG(%g6, %g1) + ldx [%g6 + TI_UTRAPS], %g1 + brnz,pt %g1, invoke_utrap + nop + + ba,pt %xcc, etrap + rd %pc, %g7 + mov %l4, %o1 + call bad_trap + add %sp, PTREGS_OFF, %o0 + ba,pt %xcc, rtrap + nop + +invoke_utrap: + sllx %g3, 3, %g3 + ldx [%g1 + %g3], %g1 + save %sp, -128, %sp + rdpr %tstate, %l6 + rdpr %cwp, %l7 + andn %l6, TSTATE_CWP, %l6 + wrpr %l6, %l7, %tstate + rdpr %tpc, %l6 + rdpr %tnpc, %l7 + wrpr %g1, 0, %tnpc + done + .size utrap_trap,.-utrap_trap |