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authorRalf Baechle <ralf@linux-mips.org>2006-04-05 09:45:45 +0100
committerRalf Baechle <ralf@linux-mips.org>2006-04-19 04:14:28 +0200
commit41c594ab65fc89573af296d192aa5235d09717ab (patch)
tree562462512a320f386bdf49eabfbb26bb3ee761fa /arch/mips/kernel/gdb-low.S
parent2600990e640e3bef29ed89d565864cf16ee83833 (diff)
downloadop-kernel-dev-41c594ab65fc89573af296d192aa5235d09717ab.zip
op-kernel-dev-41c594ab65fc89573af296d192aa5235d09717ab.tar.gz
[MIPS] MT: Improved multithreading support.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/gdb-low.S')
-rw-r--r--arch/mips/kernel/gdb-low.S24
1 files changed, 23 insertions, 1 deletions
diff --git a/arch/mips/kernel/gdb-low.S b/arch/mips/kernel/gdb-low.S
index 235ad9f..10f28fb 100644
--- a/arch/mips/kernel/gdb-low.S
+++ b/arch/mips/kernel/gdb-low.S
@@ -283,11 +283,33 @@
*/
3:
+#ifdef CONFIG_MIPS_MT_SMTC
+ /* Read-modify write of Status must be atomic */
+ mfc0 t2, CP0_TCSTATUS
+ ori t1, t2, TCSTATUS_IXMT
+ mtc0 t1, CP0_TCSTATUS
+ andi t2, t2, TCSTATUS_IXMT
+ ehb
+ DMT 9 # dmt t1
+ jal mips_ihb
+ nop
+#endif /* CONFIG_MIPS_MT_SMTC */
mfc0 t0, CP0_STATUS
ori t0, 0x1f
xori t0, 0x1f
mtc0 t0, CP0_STATUS
-
+#ifdef CONFIG_MIPS_MT_SMTC
+ andi t1, t1, VPECONTROL_TE
+ beqz t1, 9f
+ nop
+ EMT # emt
+9:
+ mfc0 t1, CP0_TCSTATUS
+ xori t1, t1, TCSTATUS_IXMT
+ or t1, t1, t2
+ mtc0 t1, CP0_TCSTATUS
+ ehb
+#endif /* CONFIG_MIPS_MT_SMTC */
LONG_L v0, GDB_FR_STATUS(sp)
LONG_L v1, GDB_FR_EPC(sp)
mtc0 v0, CP0_STATUS
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