3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1993 Jan-Simon Pendry
6 * This code is derived from software contributed to Berkeley by
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37 * @(#)procfs_machdep.c 8.3 (Berkeley) 1/27/94
44 * Functions to be implemented here are:
46 * procfs_read_regs(proc, regs)
47 * Get the current user-visible register set from the process
48 * and copy it into the regs structure (<machine/reg.h>).
49 * The process is stopped at the time read_regs is called.
51 * procfs_write_regs(proc, regs)
52 * Update the current register set from the passed in regs
53 * structure. Take care to avoid clobbering special CPU
54 * registers or privileged bits in the PSL.
55 * Depending on the architecture this may have fix-up work to do,
56 * especially if the IAR or PCW are modified.
57 * The process is stopped at the time write_regs is called.
59 * procfs_read_fpregs, procfs_write_fpregs
60 * deal with the floating point register set, otherwise as above.
63 * Arrange for the process to trap after executing a single instruction.
67 #include <sys/param.h>
68 #include <sys/systm.h>
70 #include <sys/ptrace.h>
71 #include <sys/vnode.h>
72 #include <machine/reg.h>
73 #include <machine/md_var.h>
74 #include <miscfs/procfs/procfs.h>
79 #include <vm/vm_map.h>
84 procfs_read_regs(p, regs)
88 if ((p->p_flag & P_INMEM) == 0)
90 return (fill_regs(p, regs));
94 procfs_write_regs(p, regs)
98 if ((p->p_flag & P_INMEM) == 0)
100 return (set_regs(p, regs));
104 * Ptrace doesn't support fpregs at all, and there are no security holes
105 * or translations for fpregs, so we can just copy them.
109 procfs_read_fpregs(p, fpregs)
111 struct fpreg *fpregs;
113 if ((p->p_flag & P_INMEM) == 0)
115 return (fill_fpregs(p, fpregs));
119 procfs_write_fpregs(p, fpregs)
121 struct fpreg *fpregs;
123 if ((p->p_flag & P_INMEM) == 0)
125 return (set_fpregs(p, fpregs));
139 procfs_read_dbregs(p, dbregs)
141 struct dbreg *dbregs;
147 procfs_write_dbregs(p, dbregs)
149 struct dbreg *dbregs;