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| author | David S. Miller <davem@sunset.davemloft.net> | 2006-02-05 21:29:28 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:11:48 -0800 |
| commit | 936f482af1743141d637483ec10eb881537c26dc (patch) | |
| tree | 913da89a4d9f4038c510c9ecf2f5957b0f6d167f /arch/sparc64/kernel/etrap.S | |
| parent | 6e02493a7f33ac89e698b980a657d77ab2749eaf (diff) | |
| download | blackbird-op-linux-936f482af1743141d637483ec10eb881537c26dc.tar.gz blackbird-op-linux-936f482af1743141d637483ec10eb881537c26dc.zip | |
[SPARC64]: Add initial code to twiddle %gl on trap entry/exit.
Instead of setting/clearing PSTATE_AG we have to change
the %gl register value on sun4v.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/etrap.S')
| -rw-r--r-- | arch/sparc64/kernel/etrap.S | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/arch/sparc64/kernel/etrap.S b/arch/sparc64/kernel/etrap.S index f2556146a735..4d644949ad49 100644 --- a/arch/sparc64/kernel/etrap.S +++ b/arch/sparc64/kernel/etrap.S @@ -102,7 +102,14 @@ etrap_save: save %g2, -STACK_BIAS, %sp 2: mov %g4, %l4 mov %g5, %l5 add %g7, 4, %l2 - wrpr %g0, ETRAP_PSTATE1, %pstate + + /* Go to trap time globals so we can save them. */ +661: wrpr %g0, ETRAP_PSTATE1, %pstate + .section .gl_1insn_patch, "ax" + .word 661b + SET_GL(0) + .previous + stx %g1, [%sp + PTREGS_OFF + PT_V9_G1] stx %g2, [%sp + PTREGS_OFF + PT_V9_G2] sllx %l7, 24, %l7 @@ -195,9 +202,15 @@ etraptl1: /* Save tstate/tpc/tnpc of TL 1-->4 and the tl register itself. rdpr %tt, %g3 stx %g3, [%g2 + STACK_BIAS + 0x78] - wrpr %g1, %tl stx %g1, [%g2 + STACK_BIAS + 0x80] + wrpr %g0, 1, %tl +661: nop + .section .gl_1insn_patch, "ax" + .word 661b + SET_GL(1) + .previous + rdpr %tstate, %g1 sub %g2, STACKFRAME_SZ + TRACEREG_SZ - STACK_BIAS, %g2 ba,pt %xcc, 1b |
