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      1 /*	$NetBSD: ptrace.h,v 1.19 2021/03/06 08:08:19 rin Exp $	*/
      2 
      3 #ifndef _POWERPC_PTRACE_H
      4 #define	_POWERPC_PTRACE_H
      5 
      6 #define	PT_STEP		(PT_FIRSTMACH + 0)
      7 #define	PT_GETREGS	(PT_FIRSTMACH + 1)
      8 #define	PT_SETREGS	(PT_FIRSTMACH + 2)
      9 #define	PT_GETFPREGS	(PT_FIRSTMACH + 3)
     10 #define	PT_SETFPREGS	(PT_FIRSTMACH + 4)
     11 #define	PT_GETVECREGS	(PT_FIRSTMACH + 5)
     12 #define	PT_SETVECREGS	(PT_FIRSTMACH + 6)
     13 #define	PT_SETSTEP	(PT_FIRSTMACH + 7)
     14 #define	PT_CLEARSTEP	(PT_FIRSTMACH + 8)
     15 
     16 #define	PT_MACHDEP_STRINGS				\
     17 	"PT_STEP",					\
     18 	"PT_GETREGS",		"PT_SETREGS",		\
     19 	"PT_GETFPREGS",		"PT_SETFPREGS",		\
     20 	"PT_GETVECREGS",	"PT_SETVECREGS",	\
     21 	"PT_SETSTEP",		"PT_CLEARSTEP",
     22 
     23 #include <machine/reg.h>
     24 #define PTRACE_REG_PC(r)	(r)->pc
     25 #define PTRACE_REG_FP(r)	(r)->fixreg[31]
     26 #define PTRACE_REG_SET_PC(r, v)	(r)->pc = (v)
     27 #define PTRACE_REG_SP(r)	(r)->fixreg[1]
     28 #define PTRACE_REG_INTRV(r)	(r)->fixreg[3]
     29 
     30 #ifdef _KERNEL
     31 #ifdef _KERNEL_OPT
     32 #include "opt_altivec.h"
     33 #endif
     34 
     35 #if defined(ALTIVEC) || defined(PPC_HAVE_SPE)
     36 
     37 /* We have machine-dependent process tracing requests.  */
     38 #define __HAVE_PTRACE_MACHDEP
     39 
     40 #define	PTRACE_MACHDEP_REQUEST_CASES \
     41 	case PT_GETVECREGS: \
     42 	case PT_SETVECREGS:
     43 
     44 int ptrace_machdep_dorequest(struct lwp *, struct lwp **, int, void *, int);
     45 int process_machdep_dovecregs(struct lwp *, struct lwp *, struct uio *);
     46 int process_machdep_validvecregs(struct proc *);
     47 
     48 /* We have machine-dependent procfs nodes.  */
     49 #define __HAVE_PROCFS_MACHDEP
     50 
     51 #define	PROCFS_MACHDEP_NODE_TYPES \
     52 	Pmachdep_vecregs,		/* AltiVec register set */
     53 
     54 #define	PROCFS_MACHDEP_NODETYPE_CASES \
     55 	case Pmachdep_vecregs:
     56 
     57 #define	PROCFS_MACHDEP_PROTECT_CASES \
     58 	case Pmachdep_vecregs:
     59 
     60 #define	PROCFS_MACHDEP_NODETYPE_DEFNS \
     61 	{ DT_REG, N("vecregs"), Pmachdep_vecregs, \
     62 	  procfs_machdep_validvecregs },
     63 
     64 /* Functions used by procfs.  */
     65 struct mount;
     66 struct pfsnode;
     67 int procfs_machdep_dovecregs(struct lwp *, struct lwp *,
     68 	struct pfsnode *, struct uio *);
     69 int procfs_machdep_validvecregs(struct lwp *, struct mount *);
     70 
     71 #endif /* ALTIVEC || PPC_HAVE_SPE */
     72 
     73 #if defined(PPC_BOOKE) || defined(PPC_IBM4XX)
     74 int ppc_sstep(struct lwp *, int);
     75 #endif /* PPC_BOOKE || PPC_IBM4XX */
     76 #endif /* _KERNEL */
     77 
     78 #define PTRACE_ILLEGAL_ASM	__asm __volatile (".long 0" : : : "memory")
     79 
     80 #define PTRACE_BREAKPOINT	((const uint8_t[]) { 0x7f, 0xe0, 0x00, 0x08 })
     81 #define PTRACE_BREAKPOINT_ASM	__asm __volatile("trap")
     82 #define PTRACE_BREAKPOINT_SIZE	4
     83 
     84 #endif /* _POWERPC_PTRACE_H */
     85