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target-arm: Implement MDSCR_EL1 as having state 

Now that all the new code to support single-stepping is in
place, wire up the guest-visible MDSCR_EL1, so the guest
can enable single-stepping.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
This commit is contained in:
Peter Maydell 2014-08-19 18:56:27 +01:00
parent 50225ad0c1
commit 0e5e8935bb
1 changed files with 3 additions and 1 deletions
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4
target-arm/helper.c
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@ -2204,7 +2204,9 @@ static const ARMCPRegInfo debug_cp_reginfo[] = {
*/
{ .name = "MDSCR_EL1", .state = ARM_CP_STATE_BOTH,
.cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 2,
.access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.mdscr_el1),
.resetvalue = 0 },
/* We define a dummy WI OSLAR_EL1, because Linux writes to it. */
{ .name = "OSLAR_EL1", .state = ARM_CP_STATE_BOTH,
.cp = 14, .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 4,