sun4u/ml/mach_locore.s

5  * Common Development and Distribution License (the "License").
11  * and limitations under the License.
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
69  * On the sun4u we put the panic buffer in the third and fourth pages.
91  * moved out of kernel nucleus and allocated after panicbuf.
117  * cpu0 and its ptl1_panic stack.  The cpu structure must be allocated
204  * Our contract with the boot prom specifies that the MMU is on and the
206  * with p1275cis ptr in %o0 and kdi_dvec in %o1; we start execution
254 	and	%g1, VER_MAXWIN, %g1
303 	and	%g2, 0x3f, %g3
338 #error "hole in struct machpcb between frame and regs?"
367  * for this purpose, as user_rtt and priv_rtt do not depend on them.
412 	and	%g5, TSTATE_CWP, %g6
466 	! and %g6 is the label we want done to bounce to
576 	and	%g5, VER_MAXTL_MASK, %g5	! %g5 = MAXTL
596 	! disable interrupts and check for ASTs and wbuf restores
597 	! keep cpu_base_spl in %l4 and THREAD_REG in %l6 (needed
633 	! restore user globals and outs
674 	! window, and the trap needs to be handled at TL=0, the handler
806 	! must reset the PC and nPC back to the beginning to prevent missed
823 	! the PC and nPC back to the beginning to prevent missed wakeups.
838 	! restore globals and outs
1092 	! and increment cansave so that we don't overflow on these windows.
1133  * These need to be defined somewhere to lint and there is no "hicore.s"...
1180  * and the trap level is greater than 0.  ptl1_panic is responsible to save the
1181  * current CPU state, to restore the CPU state to normal, and to call panic.
1188  * ptl1_state structure is needed and (2) it simplifies physical address
1194  * cpu structure and a ptl1 panic stack.  They are put together on the same page
1196  * structure, and the high address part is for a ptl1 panic stack.
1209 	! using a virtual address and the default ASI still takes the old data.
1211 	! Since we can afford only 2 registers (%g2 and %g3) for this job, we
1324 	! Save register window state and register windows.
1540 	! %g2 and %g3 are used as scratch registers in ptl1_panic.