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armv8_dpm: do not read/write non-existent registers 

Change-Id: I0f3fffa8cf1746569f6acce0233e9544d3862f51
Signed-off-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
Reviewed-on: http://openocd.zylin.com/6062
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
This commit is contained in:
Tarek BOCHKATI 2021-02-14 12:39:33 +01:00 committed by Antonio Borneo
parent 64c2e03b23
commit 21e1ebdc8e
1 changed files with 5 additions and 2 deletions
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7
src/target/armv8_dpm.c
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@ -782,7 +782,7 @@ int armv8_dpm_read_current_registers(struct arm_dpm *dpm)
struct arm_reg *arm_reg;
r = armv8_reg_current(arm, i);
if (r->valid)
if (!r->exist || r->valid)
continue;
/* Skip reading FP-SIMD registers */
@ -922,6 +922,9 @@ int armv8_dpm_write_dirty_registers(struct arm_dpm *dpm, bool bpwp)
for (unsigned i = 1; i < cache->num_regs; i++) {
struct arm_reg *r;
/* skip non-existent */
if (!cache->reg_list[i].exist)
continue;
/* skip PC and CPSR */
if (i == ARMV8_PC || i == ARMV8_xPSR)
continue;
@ -1047,7 +1050,7 @@ static int armv8_dpm_full_context(struct target *target)
for (unsigned i = 0; i < cache->num_regs; i++) {
struct arm_reg *r;
if (cache->reg_list[i].valid)
if (!cache->reg_list[i].exist || cache->reg_list[i].valid)
continue;
r = cache->reg_list[i].arch_info;