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authorSam Ravnborg <sam@ravnborg.org>2008-12-03 03:11:52 -0800
committerDavid S. Miller <davem@davemloft.net>2008-12-04 09:17:21 -0800
commita88b5ba8bd8ac18aad65ee6c6a254e2e74876db3 (patch)
treeeb3d0ffaf53c3f7ec6083752c2097cecd1cb892a /arch/sparc/kernel/utrap.S
parentd670bd4f803c8b646acd20f3ba21e65458293faf (diff)
sparc,sparc64: unify kernel/
o Move all files from sparc64/kernel/ to sparc/kernel - rename as appropriate o Update sparc/Makefile to the changes o Update sparc/kernel/Makefile to include the sparc64 files NOTE: This commit changes link order on sparc64! Link order had to change for either of sparc32 and sparc64. And assuming sparc64 see more testing than sparc32 change link order on sparc64 where issues will be caught faster. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/utrap.S')
-rw-r--r--arch/sparc/kernel/utrap.S29
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/sparc/kernel/utrap.S b/arch/sparc/kernel/utrap.S
new file mode 100644
index 000000000000..b7f0f3f3a909
--- /dev/null
+++ b/arch/sparc/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