diff options
Diffstat (limited to 'src/kernel/syscall.C')
| -rw-r--r-- | src/kernel/syscall.C | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/kernel/syscall.C b/src/kernel/syscall.C index 5245705d4..c50bae001 100644 --- a/src/kernel/syscall.C +++ b/src/kernel/syscall.C @@ -119,6 +119,7 @@ namespace Systemcalls void CpuDDLevel(task_t *t); void CpuStartCore(task_t *t); void CpuSprValue(task_t *t); + void CpuSprSet(task_t *t); void CpuNap(task_t *t); void CpuWinkle(task_t *t); void MmAllocBlock(task_t *t); @@ -160,6 +161,7 @@ namespace Systemcalls &CpuDDLevel, // MISC_CPUDDLEVEL &CpuStartCore, // MISC_CPUSTARTCORE &CpuSprValue, // MISC_CPUSPRVALUE + &CpuSprSet, // MISC_CPUSPRSET &CpuNap, // MISC_CPUNAP &CpuWinkle, // MISC_CPUWINKLE @@ -745,6 +747,26 @@ namespace Systemcalls } }; + /** Set SPR values. */ + void CpuSprSet(task_t *t) + { + uint64_t spr = TASK_GETARG0(t); + uint64_t newValue = TASK_GETARG1(t); + + switch (spr) + { + case CPU_SPR_HID: + setHID( newValue ); + TASK_SETRTN(t, true); + break; + + default: + // unsupported SPR for write + TASK_SETRTN(t, false); + break; + } + }; + /** * Allow a task to request privilege escalation to execute the 'nap' * instruction. |
