diff options
Diffstat (limited to 'arch/mips/kernel/gdb-low.S')
| -rw-r--r-- | arch/mips/kernel/gdb-low.S | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/arch/mips/kernel/gdb-low.S b/arch/mips/kernel/gdb-low.S index 235ad9f6bd35..10f28fb9f008 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 |