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[MIPS] MT: Improved multithreading support.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle
2006-04-05 09:45:45 +01:00
parent 2600990e64
commit 41c594ab65
51 changed files with 3720 additions and 176 deletions
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24
arch/mips/kernel/gdb-low.S
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@ -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