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1. Start the clock running early for testing.

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2. Use the upcoming "tick" interface.
3. Save a call frame as well as a trap frame on proc0's initial stack.
4. Setup a pointer to the per-cpu interrupt queue.
5. Install the per-cpu pointer in interrupt and alternate globals as well.
6. Flush out setregs so exec works.

Submitted by:	tmm (3, 5, 6)
This commit is contained in:
Jake Burkholder 2001-08-10 04:36:00 +00:00
parent 346d41dd6f
commit 9a6cacf3dd
1 changed files with 43 additions and 7 deletions
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50
sys/sparc64/sparc64/machdep.c
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@ -59,11 +59,14 @@
#include <ddb/ddb.h>
#include <machine/bootinfo.h>
#include <machine/clock.h>
#include <machine/frame.h>
#include <machine/intr_machdep.h>
#include <machine/md_var.h>
#include <machine/pmap.h>
#include <machine/pstate.h>
#include <machine/reg.h>
#include <machine/tick.h>
typedef int ofw_vec_t(void *);
@ -245,6 +248,7 @@ cpu_startup(void *arg)
globaldata_register(globaldata);
tick_start(clock, tick_hardclock);
}
unsigned
@ -257,6 +261,7 @@ void
sparc64_init(struct bootinfo *bi, ofw_vec_t *vec)
{
struct trapframe *tf;
u_long ps;
/*
* Initialize openfirmware (needed for console).
@ -277,6 +282,9 @@ sparc64_init(struct bootinfo *bi, ofw_vec_t *vec)
panic("sparc64_init: no loader metadata");
preload_metadata = (caddr_t)bi->bi_metadata;
/*
* Initialize tunables.
*/
init_param();
#ifdef DDB
@ -289,10 +297,9 @@ sparc64_init(struct bootinfo *bi, ofw_vec_t *vec)
pmap_bootstrap(bi->bi_kpa, bi->bi_end);
/*
* XXX Clear tick and disable the comparator.
* Disable tick for now.
*/
wrpr(tick, 0, 0);
wr(asr23, 1L << 63, 0);
tick_stop();
/*
* Force trap level 1 and take over the trap table.
@ -306,7 +313,9 @@ sparc64_init(struct bootinfo *bi, ofw_vec_t *vec)
LIST_INIT(&proc0.p_contested);
proc0paddr = (struct user *)user0;
proc0.p_addr = (struct user *)user0;
tf = (struct trapframe *)(user0 + UPAGES * PAGE_SIZE - sizeof(*tf));
proc0.p_stats = &proc0.p_addr->u_stats;
tf = (struct trapframe *)(user0 + UPAGES * PAGE_SIZE -
sizeof(struct frame) - sizeof(*tf));
proc0.p_frame = tf;
tf->tf_tstate = 0;
@ -315,6 +324,24 @@ sparc64_init(struct bootinfo *bi, ofw_vec_t *vec)
*/
globaldata = &__globaldata;
/*
* Setup pointers to interrupt data tables.
*/
globaldata->gd_iq = &intr_queues[0]; /* XXX cpuno */
globaldata->gd_ivt = intr_vectors;
/*
* Put the globaldata pointer in the alternate and interrupt %g7 also.
* globaldata is tied to %g7. We could therefore also use assignments to
* globaldata here.
*/
ps = rdpr(pstate);
wrpr(pstate, ps, PSTATE_AG);
__asm __volatile("mov %0, %%g7" : : "r" (&__globaldata));
wrpr(pstate, ps, PSTATE_IG);
__asm __volatile("mov %0, %%g7" : : "r" (&__globaldata));
wrpr(pstate, ps, 0);
/*
* Initialize curproc so that mutexes work.
*/
@ -381,15 +408,24 @@ ptrace_single_step(struct proc *p)
void
setregs(struct proc *p, u_long entry, u_long stack, u_long ps_strings)
{
struct frame *fp;
struct pcb *pcb;
pcb = &p->p_addr->u_pcb;
/* The inital window for the process. */
fp = (struct frame *)((caddr_t)p->p_addr + UPAGES * PAGE_SIZE) - 1;
/* Make sure the frames that are frobbed are actually flushed. */
__asm __volatile("flushw");
mtx_lock_spin(&sched_lock);
fp = (struct frame *)((caddr_t)p->p_addr + UPAGES * PAGE_SIZE) - 1;
fp_init_pcb(pcb);
/* XXX */
p->p_frame->tf_tstate &= ~TSTATE_PEF;
/* Setup state in the trap frame. */
p->p_frame->tf_tstate = 0;
p->p_frame->tf_tpc = entry;
p->p_frame->tf_tnpc = entry + 4;
/* Set up user stack. */
fp->f_fp = stack - SPOFF;
mtx_unlock_spin(&sched_lock);
TODO;
}
void