| 643,7 → 643,7 |
|---|
| * TL4: hardware or software failure |
| * |
| * Input registers: |
| * %g1 Address of function to call. |
| * %g1 Address of function to call if this is not a syscall. |
| * %g2 First argument for the function. |
| * %g6 Pre-set as kernel stack base if trap from userspace. |
| * %g7 Pre-set as address of the userspace window buffer. |
| 697,10 → 697,12 |
|---|
| /* |
| * Copy arguments for the syscall to the new window. |
| */ |
| mov %i0, %o2 |
| mov %i1, %o3 |
| mov %i2, %o4 |
| mov %i3, %o5 |
| mov %i0, %o0 |
| mov %i1, %o1 |
| mov %i2, %o2 |
| mov %i3, %o3 |
| mov %i4, %o4 |
| mov %i5, %o5 |
| .endif |
| |
| /* |
| 740,7 → 742,12 |
|---|
| * Copy arguments. |
| */ |
| mov %g1, %l0 |
| .if NOT(\is_syscall) |
| mov %g2, %o0 |
| .else |
| ! store the syscall number on the stack as 7th argument |
| stx %g2, [%sp + STACK_WINDOW_SAVE_AREA_SIZE + STACK_BIAS + STACK_ARG6] |
| .endif |
| |
| /* |
| * Save TSTATE, TPC and TNPC aside. |
| 767,17 → 774,19 |
|---|
| wrpr %g0, PSTATE_PRIV_BIT | PSTATE_PEF_BIT, %pstate |
| SAVE_GLOBALS |
| |
| .if NOT(\is_syscall) |
| /* |
| * Call the higher-level handler and pass istate as second parameter. |
| */ |
| call %l0 |
| add %sp, PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC, %o1 |
| |
| .if \is_syscall |
| .else |
| /* |
| * Copy the value returned by the syscall. |
| * Call the higher-level syscall handler. |
| */ |
| mov %o0, %i0 |
| call syscall_handler |
| nop |
| mov %o0, %i0 ! copy the value returned by the syscall |
| .endif |
| |
| RESTORE_GLOBALS |