diff options
| author | Christian Cunningham <cc@localhost> | 2022-03-24 18:52:56 -0700 |
|---|---|---|
| committer | Christian Cunningham <cc@localhost> | 2022-03-24 18:52:56 -0700 |
| commit | 7753da66d7d72f441dadd76f357fd5ceb50e7c8f (patch) | |
| tree | c79cee644108ecb65952eff2104127a19e72d0c4 /kernel/exceptions | |
| parent | 78493b1d441ef888910cf958a16f260bc3c1a7bd (diff) | |
Modularize Userspace
Diffstat (limited to 'kernel/exceptions')
| -rw-r--r-- | kernel/exceptions/svc.S | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/kernel/exceptions/svc.S b/kernel/exceptions/svc.S index a24bac9..75a0cf1 100644 --- a/kernel/exceptions/svc.S +++ b/kernel/exceptions/svc.S @@ -11,7 +11,7 @@ svc: adrle r3, svc_table_1 ldrle pc, [r3, r0, LSL #2] sub r0, #8 - cmp r0, #7 + cmp r0, #3 bgt svc_exit //// Jump to the appropriate Call adr r3, svc_table_2 @@ -128,6 +128,17 @@ svc_000009: // SYS_TIME_2 mrc p15, 0, r0, c9, c13, 0 str r0, [sp, #0] b svc_exit +svc_00000A: // SYS_CNTV_ENABLE + ldr r0, =cntfrq + ldr r0, [r0] + mcr p15, 0, r0, c14, c3, 0 + mov r0, #1 + mcr p15, 0, r0, c14, c3, 1 + b svc_exit +svc_00000B: // SYS_CNTV_DISABLE + mov r0, #0 + mcr p15, 0, r0, c14, c3, 1 + b svc_exit svc_exit: ldmfd sp!, {r0-r12,pc}^ @@ -143,3 +154,5 @@ svc_table_1: svc_table_2: .word svc_000008 .word svc_000009 + .word svc_00000A + .word svc_00000B |