diff options
Diffstat (limited to 'cpukit/score/cpu/riscv/riscv-context-switch.S')
| -rw-r--r-- | cpukit/score/cpu/riscv/riscv-context-switch.S | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/cpukit/score/cpu/riscv/riscv-context-switch.S b/cpukit/score/cpu/riscv/riscv-context-switch.S index 3c0368886e..cfaff444b0 100644 --- a/cpukit/score/cpu/riscv/riscv-context-switch.S +++ b/cpukit/score/cpu/riscv/riscv-context-switch.S @@ -40,6 +40,9 @@ PUBLIC(_CPU_Context_switch) PUBLIC(_CPU_Context_switch_no_return) PUBLIC(_CPU_Context_restore) +#ifdef RTEMS_SMP +PUBLIC(_RISCV_Start_multitasking) +#endif SYM(_CPU_Context_switch): SYM(_CPU_Context_switch_no_return): @@ -175,4 +178,16 @@ SYM(_CPU_Context_restore): sw a5, PER_CPU_OFFSET_EXECUTING(a2) j .Ltry_update_is_executing + +SYM(_RISCV_Start_multitasking): + mv a1, a0 + GET_SELF_CPU_CONTROL a2 + + /* Switch the stack to the temporary interrupt stack of this processor */ + addi sp, a2, PER_CPU_INTERRUPT_FRAME_AREA + CPU_INTERRUPT_FRAME_SIZE + + /* Enable interrupts */ + csrrs zero, mstatus, RISCV_MSTATUS_MIE + + j .Ltry_update_is_executing #endif |