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Implement procfs stubs.

This commit is contained in:
mycroft 1994-01-06 23:55:17 +00:00
parent e2c9704c72
commit d74cd05c88
1 changed files with 80 additions and 0 deletions
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80
sys/arch/hp300/hp300/procfs_machdep.c Normal file
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#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/vnode.h>
#include <machine/psl.h>
#include <machine/reg.h>
#include <miscfs/procfs/procfs.h>
extern char kstack[]; /* XXX */
int
procfs_sstep(p)
struct proc *p;
{
struct frame *frame;
if ((p->p_flag & SLOAD) == 0)
return EIO;
frame = (struct frame *)
((char *)p->p_addr + ((char *)p->p_regs - (char *)kstack));
frame->f_sr |= PSL_T;
return 0;
}
int
procfs_fix_sstep(p)
struct proc *p;
{
return 0;
}
int
procfs_read_regs(p, regs)
struct proc *p;
struct reg *regs;
{
struct frame *frame;
if ((p->p_flag & SLOAD) == 0)
return EIO;
frame = (struct frame *)
((char *)p->p_addr + ((char *)p->p_regs - (char *)kstack));
bcopy(frame->f_regs, regs->r_regs, sizeof(frame->f_regs));
regs->r_sr = frame->f_sr;
regs->r_pc = frame->f_pc;
return 0;
}
int
procfs_write_regs(p, regs)
struct proc *p;
struct reg *regs;
{
struct frame *frame;
if ((p->p_flag & SLOAD) == 0)
return EIO;
frame = (struct frame *)
((char *)p->p_addr + ((char *)p->p_regs - (char *)kstack));
if ((regs->r_sr & PSL_USERCLR) != 0 ||
(regs->r_sr & PSL_USERSET) != PSL_USERSET)
return EPERM;
bcopy(regs->r_regs, frame->f_regs, sizeof(frame->f_regs));
frame->f_sr = regs->r_sr;
frame->f_pc = regs->r_pc;
return 0;
}