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arm_opcode: Add support for ARM MCRR/MRRC

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Add support for the ARM MCRR/MRRC instructions which require the use of
two registers to transfer a 64-bit co-processor registers. We are going
to use this in a subsequent patch in order to properly dump 64-bit page
table descriptors that exist on ARMv7A with VMSA extensions.

We make use of r0 and r1 to transfer 64-bit quantities to/from DCC.

Change-Id: Ic4975026c1ae4f2853795575ac7701d541248736
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Michael Chalfant <michael.chalfant@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/5228
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
This commit is contained in:
Florian Fainelli
2019-03-18 16:00:07 -07:00
committed by Antonio Borneo
parent 1bc4182ceb
commit d27a3a00b8
6 changed files with 262 additions and 0 deletions
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13
src/target/arm_dpm.h
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@@ -72,6 +72,12 @@ struct arm_dpm {
int (*instr_write_data_r0)(struct arm_dpm *dpm,
uint32_t opcode, uint32_t data);
/**
* Runs two instructions, writing data to R0 and R1 before execution.
*/
int (*instr_write_data_r0_r1)(struct arm_dpm *dpm,
uint32_t opcode, uint64_t data);
/** Runs one instruction, writing data to R0 before execution. */
int (*instr_write_data_r0_64)(struct arm_dpm *dpm,
uint32_t opcode, uint64_t data);
@@ -92,6 +98,13 @@ struct arm_dpm {
int (*instr_read_data_r0)(struct arm_dpm *dpm,
uint32_t opcode, uint32_t *data);
/**
* Runs two instructions, reading data from r0 and r1 after
* execution.
*/
int (*instr_read_data_r0_r1)(struct arm_dpm *dpm,
uint32_t opcode, uint64_t *data);
int (*instr_read_data_r0_64)(struct arm_dpm *dpm,
uint32_t opcode, uint64_t *data);